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virtion-net: Prefer is_power_of_2()
[qemu/kevin.git] / linux-user / syscall.c
blob003943b736531e21806cc7ef4c1bbd0e918f05b7
1 /*
2 * Linux syscalls
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #define _ATFILE_SOURCE
20 #include "qemu/osdep.h"
21 #include "qemu/cutils.h"
22 #include "qemu/path.h"
23 #include <elf.h>
24 #include <endian.h>
25 #include <grp.h>
26 #include <sys/ipc.h>
27 #include <sys/msg.h>
28 #include <sys/wait.h>
29 #include <sys/mount.h>
30 #include <sys/file.h>
31 #include <sys/fsuid.h>
32 #include <sys/personality.h>
33 #include <sys/prctl.h>
34 #include <sys/resource.h>
35 #include <sys/swap.h>
36 #include <linux/capability.h>
37 #include <sched.h>
38 #include <sys/timex.h>
39 #ifdef __ia64__
40 int __clone2(int (*fn)(void *), void *child_stack_base,
41 size_t stack_size, int flags, void *arg, ...);
42 #endif
43 #include <sys/socket.h>
44 #include <sys/un.h>
45 #include <sys/uio.h>
46 #include <poll.h>
47 #include <sys/times.h>
48 #include <sys/shm.h>
49 #include <sys/sem.h>
50 #include <sys/statfs.h>
51 #include <time.h>
52 #include <utime.h>
53 #include <sys/sysinfo.h>
54 #include <sys/signalfd.h>
55 //#include <sys/user.h>
56 #include <netinet/ip.h>
57 #include <netinet/tcp.h>
58 #include <linux/wireless.h>
59 #include <linux/icmp.h>
60 #include <linux/icmpv6.h>
61 #include <linux/errqueue.h>
62 #include "qemu-common.h"
63 #ifdef CONFIG_TIMERFD
64 #include <sys/timerfd.h>
65 #endif
66 #ifdef TARGET_GPROF
67 #include <sys/gmon.h>
68 #endif
69 #ifdef CONFIG_EVENTFD
70 #include <sys/eventfd.h>
71 #endif
72 #ifdef CONFIG_EPOLL
73 #include <sys/epoll.h>
74 #endif
75 #ifdef CONFIG_ATTR
76 #include "qemu/xattr.h"
77 #endif
78 #ifdef CONFIG_SENDFILE
79 #include <sys/sendfile.h>
80 #endif
81
82 #define termios host_termios
83 #define winsize host_winsize
84 #define termio host_termio
85 #define sgttyb host_sgttyb /* same as target */
86 #define tchars host_tchars /* same as target */
87 #define ltchars host_ltchars /* same as target */
88
89 #include <linux/termios.h>
90 #include <linux/unistd.h>
91 #include <linux/cdrom.h>
92 #include <linux/hdreg.h>
93 #include <linux/soundcard.h>
94 #include <linux/kd.h>
95 #include <linux/mtio.h>
96 #include <linux/fs.h>
97 #if defined(CONFIG_FIEMAP)
98 #include <linux/fiemap.h>
99 #endif
100 #include <linux/fb.h>
101 #include <linux/vt.h>
102 #include <linux/dm-ioctl.h>
103 #include <linux/reboot.h>
104 #include <linux/route.h>
105 #include <linux/filter.h>
106 #include <linux/blkpg.h>
107 #include <netpacket/packet.h>
108 #include <linux/netlink.h>
109 #ifdef CONFIG_RTNETLINK
110 #include <linux/rtnetlink.h>
111 #include <linux/if_bridge.h>
112 #endif
113 #include <linux/audit.h>
114 #include "linux_loop.h"
115 #include "uname.h"
116
117 #include "qemu.h"
118
119 #ifndef CLONE_IO
120 #define CLONE_IO 0x80000000 /* Clone io context */
121 #endif
122
123 /* We can't directly call the host clone syscall, because this will
124 * badly confuse libc (breaking mutexes, for example). So we must
125 * divide clone flags into:
126 * * flag combinations that look like pthread_create()
127 * * flag combinations that look like fork()
128 * * flags we can implement within QEMU itself
129 * * flags we can't support and will return an error for
130 */
131 /* For thread creation, all these flags must be present; for
132 * fork, none must be present.
133 */
134 #define CLONE_THREAD_FLAGS \
135 (CLONE_VM | CLONE_FS | CLONE_FILES | \
136 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
137
138 /* These flags are ignored:
139 * CLONE_DETACHED is now ignored by the kernel;
140 * CLONE_IO is just an optimisation hint to the I/O scheduler
141 */
142 #define CLONE_IGNORED_FLAGS \
143 (CLONE_DETACHED | CLONE_IO)
144
145 /* Flags for fork which we can implement within QEMU itself */
146 #define CLONE_OPTIONAL_FORK_FLAGS \
147 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
148 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
149
150 /* Flags for thread creation which we can implement within QEMU itself */
151 #define CLONE_OPTIONAL_THREAD_FLAGS \
152 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
153 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
154
155 #define CLONE_INVALID_FORK_FLAGS \
156 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
157
158 #define CLONE_INVALID_THREAD_FLAGS \
159 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
160 CLONE_IGNORED_FLAGS))
161
162 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
163 * have almost all been allocated. We cannot support any of
164 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
165 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
166 * The checks against the invalid thread masks above will catch these.
167 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
168 */
169
170 //#define DEBUG
171 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
172 * once. This exercises the codepaths for restart.
173 */
174 //#define DEBUG_ERESTARTSYS
175
176 //#include <linux/msdos_fs.h>
177 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
178 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
179
180 #undef _syscall0
181 #undef _syscall1
182 #undef _syscall2
183 #undef _syscall3
184 #undef _syscall4
185 #undef _syscall5
186 #undef _syscall6
187
188 #define _syscall0(type,name) \
189 static type name (void) \
190 { \
191 return syscall(__NR_##name); \
192 }
193
194 #define _syscall1(type,name,type1,arg1) \
195 static type name (type1 arg1) \
196 { \
197 return syscall(__NR_##name, arg1); \
198 }
199
200 #define _syscall2(type,name,type1,arg1,type2,arg2) \
201 static type name (type1 arg1,type2 arg2) \
202 { \
203 return syscall(__NR_##name, arg1, arg2); \
204 }
205
206 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
207 static type name (type1 arg1,type2 arg2,type3 arg3) \
208 { \
209 return syscall(__NR_##name, arg1, arg2, arg3); \
210 }
211
212 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
213 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
214 { \
215 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
216 }
217
218 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
219 type5,arg5) \
220 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
221 { \
222 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
223 }
224
225
226 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
227 type5,arg5,type6,arg6) \
228 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
229 type6 arg6) \
230 { \
231 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
232 }
233
234
235 #define __NR_sys_uname __NR_uname
236 #define __NR_sys_getcwd1 __NR_getcwd
237 #define __NR_sys_getdents __NR_getdents
238 #define __NR_sys_getdents64 __NR_getdents64
239 #define __NR_sys_getpriority __NR_getpriority
240 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
241 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
242 #define __NR_sys_syslog __NR_syslog
243 #define __NR_sys_futex __NR_futex
244 #define __NR_sys_inotify_init __NR_inotify_init
245 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
246 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
247
248 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \
249 defined(__s390x__)
250 #define __NR__llseek __NR_lseek
251 #endif
252
253 /* Newer kernel ports have llseek() instead of _llseek() */
254 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
255 #define TARGET_NR__llseek TARGET_NR_llseek
256 #endif
257
258 #ifdef __NR_gettid
259 _syscall0(int, gettid)
260 #else
261 /* This is a replacement for the host gettid() and must return a host
262 errno. */
263 static int gettid(void) {
264 return -ENOSYS;
265 }
266 #endif
267 #if defined(TARGET_NR_getdents) && defined(__NR_getdents)
268 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
269 #endif
270 #if !defined(__NR_getdents) || \
271 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
272 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
273 #endif
274 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
275 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
276 loff_t *, res, uint, wh);
277 #endif
278 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
279 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
280 siginfo_t *, uinfo)
281 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
282 #ifdef __NR_exit_group
283 _syscall1(int,exit_group,int,error_code)
284 #endif
285 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
286 _syscall1(int,set_tid_address,int *,tidptr)
287 #endif
288 #if defined(TARGET_NR_futex) && defined(__NR_futex)
289 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
290 const struct timespec *,timeout,int *,uaddr2,int,val3)
291 #endif
292 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
293 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
294 unsigned long *, user_mask_ptr);
295 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
296 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
297 unsigned long *, user_mask_ptr);
298 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
299 void *, arg);
300 _syscall2(int, capget, struct __user_cap_header_struct *, header,
301 struct __user_cap_data_struct *, data);
302 _syscall2(int, capset, struct __user_cap_header_struct *, header,
303 struct __user_cap_data_struct *, data);
304 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
305 _syscall2(int, ioprio_get, int, which, int, who)
306 #endif
307 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
308 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
309 #endif
310 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
311 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
312 #endif
313
314 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
315 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
316 unsigned long, idx1, unsigned long, idx2)
317 #endif
318
319 static bitmask_transtbl fcntl_flags_tbl[] = {
320 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
321 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
322 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
323 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
324 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
325 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
326 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
327 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
328 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
329 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
330 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
331 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
332 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
333 #if defined(O_DIRECT)
334 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
335 #endif
336 #if defined(O_NOATIME)
337 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
338 #endif
339 #if defined(O_CLOEXEC)
340 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
341 #endif
342 #if defined(O_PATH)
343 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
344 #endif
345 /* Don't terminate the list prematurely on 64-bit host+guest. */
346 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
347 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
348 #endif
349 { 0, 0, 0, 0 }
350 };
351
352 enum {
353 QEMU_IFLA_BR_UNSPEC,
354 QEMU_IFLA_BR_FORWARD_DELAY,
355 QEMU_IFLA_BR_HELLO_TIME,
356 QEMU_IFLA_BR_MAX_AGE,
357 QEMU_IFLA_BR_AGEING_TIME,
358 QEMU_IFLA_BR_STP_STATE,
359 QEMU_IFLA_BR_PRIORITY,
360 QEMU_IFLA_BR_VLAN_FILTERING,
361 QEMU_IFLA_BR_VLAN_PROTOCOL,
362 QEMU_IFLA_BR_GROUP_FWD_MASK,
363 QEMU_IFLA_BR_ROOT_ID,
364 QEMU_IFLA_BR_BRIDGE_ID,
365 QEMU_IFLA_BR_ROOT_PORT,
366 QEMU_IFLA_BR_ROOT_PATH_COST,
367 QEMU_IFLA_BR_TOPOLOGY_CHANGE,
368 QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
369 QEMU_IFLA_BR_HELLO_TIMER,
370 QEMU_IFLA_BR_TCN_TIMER,
371 QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER,
372 QEMU_IFLA_BR_GC_TIMER,
373 QEMU_IFLA_BR_GROUP_ADDR,
374 QEMU_IFLA_BR_FDB_FLUSH,
375 QEMU_IFLA_BR_MCAST_ROUTER,
376 QEMU_IFLA_BR_MCAST_SNOOPING,
377 QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR,
378 QEMU_IFLA_BR_MCAST_QUERIER,
379 QEMU_IFLA_BR_MCAST_HASH_ELASTICITY,
380 QEMU_IFLA_BR_MCAST_HASH_MAX,
381 QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT,
382 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT,
383 QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL,
384 QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL,
385 QEMU_IFLA_BR_MCAST_QUERIER_INTVL,
386 QEMU_IFLA_BR_MCAST_QUERY_INTVL,
387 QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL,
388 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL,
389 QEMU_IFLA_BR_NF_CALL_IPTABLES,
390 QEMU_IFLA_BR_NF_CALL_IP6TABLES,
391 QEMU_IFLA_BR_NF_CALL_ARPTABLES,
392 QEMU_IFLA_BR_VLAN_DEFAULT_PVID,
393 QEMU_IFLA_BR_PAD,
394 QEMU_IFLA_BR_VLAN_STATS_ENABLED,
395 QEMU_IFLA_BR_MCAST_STATS_ENABLED,
396 QEMU___IFLA_BR_MAX,
397 };
398
399 enum {
400 QEMU_IFLA_UNSPEC,
401 QEMU_IFLA_ADDRESS,
402 QEMU_IFLA_BROADCAST,
403 QEMU_IFLA_IFNAME,
404 QEMU_IFLA_MTU,
405 QEMU_IFLA_LINK,
406 QEMU_IFLA_QDISC,
407 QEMU_IFLA_STATS,
408 QEMU_IFLA_COST,
409 QEMU_IFLA_PRIORITY,
410 QEMU_IFLA_MASTER,
411 QEMU_IFLA_WIRELESS,
412 QEMU_IFLA_PROTINFO,
413 QEMU_IFLA_TXQLEN,
414 QEMU_IFLA_MAP,
415 QEMU_IFLA_WEIGHT,
416 QEMU_IFLA_OPERSTATE,
417 QEMU_IFLA_LINKMODE,
418 QEMU_IFLA_LINKINFO,
419 QEMU_IFLA_NET_NS_PID,
420 QEMU_IFLA_IFALIAS,
421 QEMU_IFLA_NUM_VF,
422 QEMU_IFLA_VFINFO_LIST,
423 QEMU_IFLA_STATS64,
424 QEMU_IFLA_VF_PORTS,
425 QEMU_IFLA_PORT_SELF,
426 QEMU_IFLA_AF_SPEC,
427 QEMU_IFLA_GROUP,
428 QEMU_IFLA_NET_NS_FD,
429 QEMU_IFLA_EXT_MASK,
430 QEMU_IFLA_PROMISCUITY,
431 QEMU_IFLA_NUM_TX_QUEUES,
432 QEMU_IFLA_NUM_RX_QUEUES,
433 QEMU_IFLA_CARRIER,
434 QEMU_IFLA_PHYS_PORT_ID,
435 QEMU_IFLA_CARRIER_CHANGES,
436 QEMU_IFLA_PHYS_SWITCH_ID,
437 QEMU_IFLA_LINK_NETNSID,
438 QEMU_IFLA_PHYS_PORT_NAME,
439 QEMU_IFLA_PROTO_DOWN,
440 QEMU_IFLA_GSO_MAX_SEGS,
441 QEMU_IFLA_GSO_MAX_SIZE,
442 QEMU_IFLA_PAD,
443 QEMU_IFLA_XDP,
444 QEMU___IFLA_MAX
445 };
446
447 enum {
448 QEMU_IFLA_BRPORT_UNSPEC,
449 QEMU_IFLA_BRPORT_STATE,
450 QEMU_IFLA_BRPORT_PRIORITY,
451 QEMU_IFLA_BRPORT_COST,
452 QEMU_IFLA_BRPORT_MODE,
453 QEMU_IFLA_BRPORT_GUARD,
454 QEMU_IFLA_BRPORT_PROTECT,
455 QEMU_IFLA_BRPORT_FAST_LEAVE,
456 QEMU_IFLA_BRPORT_LEARNING,
457 QEMU_IFLA_BRPORT_UNICAST_FLOOD,
458 QEMU_IFLA_BRPORT_PROXYARP,
459 QEMU_IFLA_BRPORT_LEARNING_SYNC,
460 QEMU_IFLA_BRPORT_PROXYARP_WIFI,
461 QEMU_IFLA_BRPORT_ROOT_ID,
462 QEMU_IFLA_BRPORT_BRIDGE_ID,
463 QEMU_IFLA_BRPORT_DESIGNATED_PORT,
464 QEMU_IFLA_BRPORT_DESIGNATED_COST,
465 QEMU_IFLA_BRPORT_ID,
466 QEMU_IFLA_BRPORT_NO,
467 QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
468 QEMU_IFLA_BRPORT_CONFIG_PENDING,
469 QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER,
470 QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER,
471 QEMU_IFLA_BRPORT_HOLD_TIMER,
472 QEMU_IFLA_BRPORT_FLUSH,
473 QEMU_IFLA_BRPORT_MULTICAST_ROUTER,
474 QEMU_IFLA_BRPORT_PAD,
475 QEMU___IFLA_BRPORT_MAX
476 };
477
478 enum {
479 QEMU_IFLA_INFO_UNSPEC,
480 QEMU_IFLA_INFO_KIND,
481 QEMU_IFLA_INFO_DATA,
482 QEMU_IFLA_INFO_XSTATS,
483 QEMU_IFLA_INFO_SLAVE_KIND,
484 QEMU_IFLA_INFO_SLAVE_DATA,
485 QEMU___IFLA_INFO_MAX,
486 };
487
488 enum {
489 QEMU_IFLA_INET_UNSPEC,
490 QEMU_IFLA_INET_CONF,
491 QEMU___IFLA_INET_MAX,
492 };
493
494 enum {
495 QEMU_IFLA_INET6_UNSPEC,
496 QEMU_IFLA_INET6_FLAGS,
497 QEMU_IFLA_INET6_CONF,
498 QEMU_IFLA_INET6_STATS,
499 QEMU_IFLA_INET6_MCAST,
500 QEMU_IFLA_INET6_CACHEINFO,
501 QEMU_IFLA_INET6_ICMP6STATS,
502 QEMU_IFLA_INET6_TOKEN,
503 QEMU_IFLA_INET6_ADDR_GEN_MODE,
504 QEMU___IFLA_INET6_MAX
505 };
506
507 typedef abi_long (*TargetFdDataFunc)(void *, size_t);
508 typedef abi_long (*TargetFdAddrFunc)(void *, abi_ulong, socklen_t);
509 typedef struct TargetFdTrans {
510 TargetFdDataFunc host_to_target_data;
511 TargetFdDataFunc target_to_host_data;
512 TargetFdAddrFunc target_to_host_addr;
513 } TargetFdTrans;
514
515 static TargetFdTrans **target_fd_trans;
516
517 static unsigned int target_fd_max;
518
519 static TargetFdDataFunc fd_trans_target_to_host_data(int fd)
520 {
521 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
522 return target_fd_trans[fd]->target_to_host_data;
523 }
524 return NULL;
525 }
526
527 static TargetFdDataFunc fd_trans_host_to_target_data(int fd)
528 {
529 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
530 return target_fd_trans[fd]->host_to_target_data;
531 }
532 return NULL;
533 }
534
535 static TargetFdAddrFunc fd_trans_target_to_host_addr(int fd)
536 {
537 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
538 return target_fd_trans[fd]->target_to_host_addr;
539 }
540 return NULL;
541 }
542
543 static void fd_trans_register(int fd, TargetFdTrans *trans)
544 {
545 unsigned int oldmax;
546
547 if (fd >= target_fd_max) {
548 oldmax = target_fd_max;
549 target_fd_max = ((fd >> 6) + 1) << 6; /* by slice of 64 entries */
550 target_fd_trans = g_renew(TargetFdTrans *,
551 target_fd_trans, target_fd_max);
552 memset((void *)(target_fd_trans + oldmax), 0,
553 (target_fd_max - oldmax) * sizeof(TargetFdTrans *));
554 }
555 target_fd_trans[fd] = trans;
556 }
557
558 static void fd_trans_unregister(int fd)
559 {
560 if (fd >= 0 && fd < target_fd_max) {
561 target_fd_trans[fd] = NULL;
562 }
563 }
564
565 static void fd_trans_dup(int oldfd, int newfd)
566 {
567 fd_trans_unregister(newfd);
568 if (oldfd < target_fd_max && target_fd_trans[oldfd]) {
569 fd_trans_register(newfd, target_fd_trans[oldfd]);
570 }
571 }
572
573 static int sys_getcwd1(char *buf, size_t size)
574 {
575 if (getcwd(buf, size) == NULL) {
576 /* getcwd() sets errno */
577 return (-1);
578 }
579 return strlen(buf)+1;
580 }
581
582 #ifdef TARGET_NR_utimensat
583 #if defined(__NR_utimensat)
584 #define __NR_sys_utimensat __NR_utimensat
585 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
586 const struct timespec *,tsp,int,flags)
587 #else
588 static int sys_utimensat(int dirfd, const char *pathname,
589 const struct timespec times[2], int flags)
590 {
591 errno = ENOSYS;
592 return -1;
593 }
594 #endif
595 #endif /* TARGET_NR_utimensat */
596
597 #ifdef CONFIG_INOTIFY
598 #include <sys/inotify.h>
599
600 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
601 static int sys_inotify_init(void)
602 {
603 return (inotify_init());
604 }
605 #endif
606 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
607 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
608 {
609 return (inotify_add_watch(fd, pathname, mask));
610 }
611 #endif
612 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
613 static int sys_inotify_rm_watch(int fd, int32_t wd)
614 {
615 return (inotify_rm_watch(fd, wd));
616 }
617 #endif
618 #ifdef CONFIG_INOTIFY1
619 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
620 static int sys_inotify_init1(int flags)
621 {
622 return (inotify_init1(flags));
623 }
624 #endif
625 #endif
626 #else
627 /* Userspace can usually survive runtime without inotify */
628 #undef TARGET_NR_inotify_init
629 #undef TARGET_NR_inotify_init1
630 #undef TARGET_NR_inotify_add_watch
631 #undef TARGET_NR_inotify_rm_watch
632 #endif /* CONFIG_INOTIFY */
633
634 #if defined(TARGET_NR_prlimit64)
635 #ifndef __NR_prlimit64
636 # define __NR_prlimit64 -1
637 #endif
638 #define __NR_sys_prlimit64 __NR_prlimit64
639 /* The glibc rlimit structure may not be that used by the underlying syscall */
640 struct host_rlimit64 {
641 uint64_t rlim_cur;
642 uint64_t rlim_max;
643 };
644 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
645 const struct host_rlimit64 *, new_limit,
646 struct host_rlimit64 *, old_limit)
647 #endif
648
649
650 #if defined(TARGET_NR_timer_create)
651 /* Maxiumum of 32 active POSIX timers allowed at any one time. */
652 static timer_t g_posix_timers[32] = { 0, } ;
653
654 static inline int next_free_host_timer(void)
655 {
656 int k ;
657 /* FIXME: Does finding the next free slot require a lock? */
658 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
659 if (g_posix_timers[k] == 0) {
660 g_posix_timers[k] = (timer_t) 1;
661 return k;
662 }
663 }
664 return -1;
665 }
666 #endif
667
668 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
669 #ifdef TARGET_ARM
670 static inline int regpairs_aligned(void *cpu_env) {
671 return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
672 }
673 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
674 static inline int regpairs_aligned(void *cpu_env) { return 1; }
675 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
676 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
677 * of registers which translates to the same as ARM/MIPS, because we start with
678 * r3 as arg1 */
679 static inline int regpairs_aligned(void *cpu_env) { return 1; }
680 #else
681 static inline int regpairs_aligned(void *cpu_env) { return 0; }
682 #endif
683
684 #define ERRNO_TABLE_SIZE 1200
685
686 /* target_to_host_errno_table[] is initialized from
687 * host_to_target_errno_table[] in syscall_init(). */
688 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
689 };
690
691 /*
692 * This list is the union of errno values overridden in asm-<arch>/errno.h
693 * minus the errnos that are not actually generic to all archs.
694 */
695 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
696 [EAGAIN] = TARGET_EAGAIN,
697 [EIDRM] = TARGET_EIDRM,
698 [ECHRNG] = TARGET_ECHRNG,
699 [EL2NSYNC] = TARGET_EL2NSYNC,
700 [EL3HLT] = TARGET_EL3HLT,
701 [EL3RST] = TARGET_EL3RST,
702 [ELNRNG] = TARGET_ELNRNG,
703 [EUNATCH] = TARGET_EUNATCH,
704 [ENOCSI] = TARGET_ENOCSI,
705 [EL2HLT] = TARGET_EL2HLT,
706 [EDEADLK] = TARGET_EDEADLK,
707 [ENOLCK] = TARGET_ENOLCK,
708 [EBADE] = TARGET_EBADE,
709 [EBADR] = TARGET_EBADR,
710 [EXFULL] = TARGET_EXFULL,
711 [ENOANO] = TARGET_ENOANO,
712 [EBADRQC] = TARGET_EBADRQC,
713 [EBADSLT] = TARGET_EBADSLT,
714 [EBFONT] = TARGET_EBFONT,
715 [ENOSTR] = TARGET_ENOSTR,
716 [ENODATA] = TARGET_ENODATA,
717 [ETIME] = TARGET_ETIME,
718 [ENOSR] = TARGET_ENOSR,
719 [ENONET] = TARGET_ENONET,
720 [ENOPKG] = TARGET_ENOPKG,
721 [EREMOTE] = TARGET_EREMOTE,
722 [ENOLINK] = TARGET_ENOLINK,
723 [EADV] = TARGET_EADV,
724 [ESRMNT] = TARGET_ESRMNT,
725 [ECOMM] = TARGET_ECOMM,
726 [EPROTO] = TARGET_EPROTO,
727 [EDOTDOT] = TARGET_EDOTDOT,
728 [EMULTIHOP] = TARGET_EMULTIHOP,
729 [EBADMSG] = TARGET_EBADMSG,
730 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
731 [EOVERFLOW] = TARGET_EOVERFLOW,
732 [ENOTUNIQ] = TARGET_ENOTUNIQ,
733 [EBADFD] = TARGET_EBADFD,
734 [EREMCHG] = TARGET_EREMCHG,
735 [ELIBACC] = TARGET_ELIBACC,
736 [ELIBBAD] = TARGET_ELIBBAD,
737 [ELIBSCN] = TARGET_ELIBSCN,
738 [ELIBMAX] = TARGET_ELIBMAX,
739 [ELIBEXEC] = TARGET_ELIBEXEC,
740 [EILSEQ] = TARGET_EILSEQ,
741 [ENOSYS] = TARGET_ENOSYS,
742 [ELOOP] = TARGET_ELOOP,
743 [ERESTART] = TARGET_ERESTART,
744 [ESTRPIPE] = TARGET_ESTRPIPE,
745 [ENOTEMPTY] = TARGET_ENOTEMPTY,
746 [EUSERS] = TARGET_EUSERS,
747 [ENOTSOCK] = TARGET_ENOTSOCK,
748 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
749 [EMSGSIZE] = TARGET_EMSGSIZE,
750 [EPROTOTYPE] = TARGET_EPROTOTYPE,
751 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
752 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
753 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
754 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
755 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
756 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
757 [EADDRINUSE] = TARGET_EADDRINUSE,
758 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
759 [ENETDOWN] = TARGET_ENETDOWN,
760 [ENETUNREACH] = TARGET_ENETUNREACH,
761 [ENETRESET] = TARGET_ENETRESET,
762 [ECONNABORTED] = TARGET_ECONNABORTED,
763 [ECONNRESET] = TARGET_ECONNRESET,
764 [ENOBUFS] = TARGET_ENOBUFS,
765 [EISCONN] = TARGET_EISCONN,
766 [ENOTCONN] = TARGET_ENOTCONN,
767 [EUCLEAN] = TARGET_EUCLEAN,
768 [ENOTNAM] = TARGET_ENOTNAM,
769 [ENAVAIL] = TARGET_ENAVAIL,
770 [EISNAM] = TARGET_EISNAM,
771 [EREMOTEIO] = TARGET_EREMOTEIO,
772 [EDQUOT] = TARGET_EDQUOT,
773 [ESHUTDOWN] = TARGET_ESHUTDOWN,
774 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
775 [ETIMEDOUT] = TARGET_ETIMEDOUT,
776 [ECONNREFUSED] = TARGET_ECONNREFUSED,
777 [EHOSTDOWN] = TARGET_EHOSTDOWN,
778 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
779 [EALREADY] = TARGET_EALREADY,
780 [EINPROGRESS] = TARGET_EINPROGRESS,
781 [ESTALE] = TARGET_ESTALE,
782 [ECANCELED] = TARGET_ECANCELED,
783 [ENOMEDIUM] = TARGET_ENOMEDIUM,
784 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
785 #ifdef ENOKEY
786 [ENOKEY] = TARGET_ENOKEY,
787 #endif
788 #ifdef EKEYEXPIRED
789 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
790 #endif
791 #ifdef EKEYREVOKED
792 [EKEYREVOKED] = TARGET_EKEYREVOKED,
793 #endif
794 #ifdef EKEYREJECTED
795 [EKEYREJECTED] = TARGET_EKEYREJECTED,
796 #endif
797 #ifdef EOWNERDEAD
798 [EOWNERDEAD] = TARGET_EOWNERDEAD,
799 #endif
800 #ifdef ENOTRECOVERABLE
801 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
802 #endif
803 #ifdef ENOMSG
804 [ENOMSG] = TARGET_ENOMSG,
805 #endif
806 #ifdef ERKFILL
807 [ERFKILL] = TARGET_ERFKILL,
808 #endif
809 #ifdef EHWPOISON
810 [EHWPOISON] = TARGET_EHWPOISON,
811 #endif
812 };
813
814 static inline int host_to_target_errno(int err)
815 {
816 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
817 host_to_target_errno_table[err]) {
818 return host_to_target_errno_table[err];
819 }
820 return err;
821 }
822
823 static inline int target_to_host_errno(int err)
824 {
825 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
826 target_to_host_errno_table[err]) {
827 return target_to_host_errno_table[err];
828 }
829 return err;
830 }
831
832 static inline abi_long get_errno(abi_long ret)
833 {
834 if (ret == -1)
835 return -host_to_target_errno(errno);
836 else
837 return ret;
838 }
839
840 static inline int is_error(abi_long ret)
841 {
842 return (abi_ulong)ret >= (abi_ulong)(-4096);
843 }
844
845 const char *target_strerror(int err)
846 {
847 if (err == TARGET_ERESTARTSYS) {
848 return "To be restarted";
849 }
850 if (err == TARGET_QEMU_ESIGRETURN) {
851 return "Successful exit from sigreturn";
852 }
853
854 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
855 return NULL;
856 }
857 return strerror(target_to_host_errno(err));
858 }
859
860 #define safe_syscall0(type, name) \
861 static type safe_##name(void) \
862 { \
863 return safe_syscall(__NR_##name); \
864 }
865
866 #define safe_syscall1(type, name, type1, arg1) \
867 static type safe_##name(type1 arg1) \
868 { \
869 return safe_syscall(__NR_##name, arg1); \
870 }
871
872 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
873 static type safe_##name(type1 arg1, type2 arg2) \
874 { \
875 return safe_syscall(__NR_##name, arg1, arg2); \
876 }
877
878 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
879 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
880 { \
881 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
882 }
883
884 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
885 type4, arg4) \
886 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
887 { \
888 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
889 }
890
891 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
892 type4, arg4, type5, arg5) \
893 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
894 type5 arg5) \
895 { \
896 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
897 }
898
899 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
900 type4, arg4, type5, arg5, type6, arg6) \
901 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
902 type5 arg5, type6 arg6) \
903 { \
904 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
905 }
906
907 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
908 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
909 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
910 int, flags, mode_t, mode)
911 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
912 struct rusage *, rusage)
913 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
914 int, options, struct rusage *, rusage)
915 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
916 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
917 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
918 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
919 struct timespec *, tsp, const sigset_t *, sigmask,
920 size_t, sigsetsize)
921 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
922 int, maxevents, int, timeout, const sigset_t *, sigmask,
923 size_t, sigsetsize)
924 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
925 const struct timespec *,timeout,int *,uaddr2,int,val3)
926 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
927 safe_syscall2(int, kill, pid_t, pid, int, sig)
928 safe_syscall2(int, tkill, int, tid, int, sig)
929 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
930 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
931 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
932 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
933 unsigned long, pos_l, unsigned long, pos_h)
934 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
935 unsigned long, pos_l, unsigned long, pos_h)
936 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
937 socklen_t, addrlen)
938 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
939 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
940 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
941 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
942 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
943 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
944 safe_syscall2(int, flock, int, fd, int, operation)
945 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
946 const struct timespec *, uts, size_t, sigsetsize)
947 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
948 int, flags)
949 safe_syscall2(int, nanosleep, const struct timespec *, req,
950 struct timespec *, rem)
951 #ifdef TARGET_NR_clock_nanosleep
952 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
953 const struct timespec *, req, struct timespec *, rem)
954 #endif
955 #ifdef __NR_msgsnd
956 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
957 int, flags)
958 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
959 long, msgtype, int, flags)
960 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
961 unsigned, nsops, const struct timespec *, timeout)
962 #else
963 /* This host kernel architecture uses a single ipc syscall; fake up
964 * wrappers for the sub-operations to hide this implementation detail.
965 * Annoyingly we can't include linux/ipc.h to get the constant definitions
966 * for the call parameter because some structs in there conflict with the
967 * sys/ipc.h ones. So we just define them here, and rely on them being
968 * the same for all host architectures.
969 */
970 #define Q_SEMTIMEDOP 4
971 #define Q_MSGSND 11
972 #define Q_MSGRCV 12
973 #define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP))
974
975 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
976 void *, ptr, long, fifth)
977 static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags)
978 {
979 return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0);
980 }
981 static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags)
982 {
983 return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type);
984 }
985 static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops,
986 const struct timespec *timeout)
987 {
988 return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops,
989 (long)timeout);
990 }
991 #endif
992 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
993 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
994 size_t, len, unsigned, prio, const struct timespec *, timeout)
995 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
996 size_t, len, unsigned *, prio, const struct timespec *, timeout)
997 #endif
998 /* We do ioctl like this rather than via safe_syscall3 to preserve the
999 * "third argument might be integer or pointer or not present" behaviour of
1000 * the libc function.
1001 */
1002 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
1003 /* Similarly for fcntl. Note that callers must always:
1004 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
1005 * use the flock64 struct rather than unsuffixed flock
1006 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
1007 */
1008 #ifdef __NR_fcntl64
1009 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
1010 #else
1011 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
1012 #endif
1013
1014 static inline int host_to_target_sock_type(int host_type)
1015 {
1016 int target_type;
1017
1018 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
1019 case SOCK_DGRAM:
1020 target_type = TARGET_SOCK_DGRAM;
1021 break;
1022 case SOCK_STREAM:
1023 target_type = TARGET_SOCK_STREAM;
1024 break;
1025 default:
1026 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
1027 break;
1028 }
1029
1030 #if defined(SOCK_CLOEXEC)
1031 if (host_type & SOCK_CLOEXEC) {
1032 target_type |= TARGET_SOCK_CLOEXEC;
1033 }
1034 #endif
1035
1036 #if defined(SOCK_NONBLOCK)
1037 if (host_type & SOCK_NONBLOCK) {
1038 target_type |= TARGET_SOCK_NONBLOCK;
1039 }
1040 #endif
1041
1042 return target_type;
1043 }
1044
1045 static abi_ulong target_brk;
1046 static abi_ulong target_original_brk;
1047 static abi_ulong brk_page;
1048
1049 void target_set_brk(abi_ulong new_brk)
1050 {
1051 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
1052 brk_page = HOST_PAGE_ALIGN(target_brk);
1053 }
1054
1055 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
1056 #define DEBUGF_BRK(message, args...)
1057
1058 /* do_brk() must return target values and target errnos. */
1059 abi_long do_brk(abi_ulong new_brk)
1060 {
1061 abi_long mapped_addr;
1062 abi_ulong new_alloc_size;
1063
1064 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
1065
1066 if (!new_brk) {
1067 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
1068 return target_brk;
1069 }
1070 if (new_brk < target_original_brk) {
1071 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
1072 target_brk);
1073 return target_brk;
1074 }
1075
1076 /* If the new brk is less than the highest page reserved to the
1077 * target heap allocation, set it and we're almost done... */
1078 if (new_brk <= brk_page) {
1079 /* Heap contents are initialized to zero, as for anonymous
1080 * mapped pages. */
1081 if (new_brk > target_brk) {
1082 memset(g2h(target_brk), 0, new_brk - target_brk);
1083 }
1084 target_brk = new_brk;
1085 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
1086 return target_brk;
1087 }
1088
1089 /* We need to allocate more memory after the brk... Note that
1090 * we don't use MAP_FIXED because that will map over the top of
1091 * any existing mapping (like the one with the host libc or qemu
1092 * itself); instead we treat "mapped but at wrong address" as
1093 * a failure and unmap again.
1094 */
1095 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
1096 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
1097 PROT_READ|PROT_WRITE,
1098 MAP_ANON|MAP_PRIVATE, 0, 0));
1099
1100 if (mapped_addr == brk_page) {
1101 /* Heap contents are initialized to zero, as for anonymous
1102 * mapped pages. Technically the new pages are already
1103 * initialized to zero since they *are* anonymous mapped
1104 * pages, however we have to take care with the contents that
1105 * come from the remaining part of the previous page: it may
1106 * contains garbage data due to a previous heap usage (grown
1107 * then shrunken). */
1108 memset(g2h(target_brk), 0, brk_page - target_brk);
1109
1110 target_brk = new_brk;
1111 brk_page = HOST_PAGE_ALIGN(target_brk);
1112 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
1113 target_brk);
1114 return target_brk;
1115 } else if (mapped_addr != -1) {
1116 /* Mapped but at wrong address, meaning there wasn't actually
1117 * enough space for this brk.
1118 */
1119 target_munmap(mapped_addr, new_alloc_size);
1120 mapped_addr = -1;
1121 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
1122 }
1123 else {
1124 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
1125 }
1126
1127 #if defined(TARGET_ALPHA)
1128 /* We (partially) emulate OSF/1 on Alpha, which requires we
1129 return a proper errno, not an unchanged brk value. */
1130 return -TARGET_ENOMEM;
1131 #endif
1132 /* For everything else, return the previous break. */
1133 return target_brk;
1134 }
1135
1136 static inline abi_long copy_from_user_fdset(fd_set *fds,
1137 abi_ulong target_fds_addr,
1138 int n)
1139 {
1140 int i, nw, j, k;
1141 abi_ulong b, *target_fds;
1142
1143 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1144 if (!(target_fds = lock_user(VERIFY_READ,
1145 target_fds_addr,
1146 sizeof(abi_ulong) * nw,
1147 1)))
1148 return -TARGET_EFAULT;
1149
1150 FD_ZERO(fds);
1151 k = 0;
1152 for (i = 0; i < nw; i++) {
1153 /* grab the abi_ulong */
1154 __get_user(b, &target_fds[i]);
1155 for (j = 0; j < TARGET_ABI_BITS; j++) {
1156 /* check the bit inside the abi_ulong */
1157 if ((b >> j) & 1)
1158 FD_SET(k, fds);
1159 k++;
1160 }
1161 }
1162
1163 unlock_user(target_fds, target_fds_addr, 0);
1164
1165 return 0;
1166 }
1167
1168 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
1169 abi_ulong target_fds_addr,
1170 int n)
1171 {
1172 if (target_fds_addr) {
1173 if (copy_from_user_fdset(fds, target_fds_addr, n))
1174 return -TARGET_EFAULT;
1175 *fds_ptr = fds;
1176 } else {
1177 *fds_ptr = NULL;
1178 }
1179 return 0;
1180 }
1181
1182 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
1183 const fd_set *fds,
1184 int n)
1185 {
1186 int i, nw, j, k;
1187 abi_long v;
1188 abi_ulong *target_fds;
1189
1190 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1191 if (!(target_fds = lock_user(VERIFY_WRITE,
1192 target_fds_addr,
1193 sizeof(abi_ulong) * nw,
1194 0)))
1195 return -TARGET_EFAULT;
1196
1197 k = 0;
1198 for (i = 0; i < nw; i++) {
1199 v = 0;
1200 for (j = 0; j < TARGET_ABI_BITS; j++) {
1201 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1202 k++;
1203 }
1204 __put_user(v, &target_fds[i]);
1205 }
1206
1207 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1208
1209 return 0;
1210 }
1211
1212 #if defined(__alpha__)
1213 #define HOST_HZ 1024
1214 #else
1215 #define HOST_HZ 100
1216 #endif
1217
1218 static inline abi_long host_to_target_clock_t(long ticks)
1219 {
1220 #if HOST_HZ == TARGET_HZ
1221 return ticks;
1222 #else
1223 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1224 #endif
1225 }
1226
1227 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1228 const struct rusage *rusage)
1229 {
1230 struct target_rusage *target_rusage;
1231
1232 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1233 return -TARGET_EFAULT;
1234 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1235 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1236 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1237 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1238 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1239 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1240 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1241 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1242 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1243 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1244 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1245 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1246 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1247 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1248 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1249 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1250 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1251 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1252 unlock_user_struct(target_rusage, target_addr, 1);
1253
1254 return 0;
1255 }
1256
1257 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1258 {
1259 abi_ulong target_rlim_swap;
1260 rlim_t result;
1261
1262 target_rlim_swap = tswapal(target_rlim);
1263 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1264 return RLIM_INFINITY;
1265
1266 result = target_rlim_swap;
1267 if (target_rlim_swap != (rlim_t)result)
1268 return RLIM_INFINITY;
1269
1270 return result;
1271 }
1272
1273 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1274 {
1275 abi_ulong target_rlim_swap;
1276 abi_ulong result;
1277
1278 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1279 target_rlim_swap = TARGET_RLIM_INFINITY;
1280 else
1281 target_rlim_swap = rlim;
1282 result = tswapal(target_rlim_swap);
1283
1284 return result;
1285 }
1286
1287 static inline int target_to_host_resource(int code)
1288 {
1289 switch (code) {
1290 case TARGET_RLIMIT_AS:
1291 return RLIMIT_AS;
1292 case TARGET_RLIMIT_CORE:
1293 return RLIMIT_CORE;
1294 case TARGET_RLIMIT_CPU:
1295 return RLIMIT_CPU;
1296 case TARGET_RLIMIT_DATA:
1297 return RLIMIT_DATA;
1298 case TARGET_RLIMIT_FSIZE:
1299 return RLIMIT_FSIZE;
1300 case TARGET_RLIMIT_LOCKS:
1301 return RLIMIT_LOCKS;
1302 case TARGET_RLIMIT_MEMLOCK:
1303 return RLIMIT_MEMLOCK;
1304 case TARGET_RLIMIT_MSGQUEUE:
1305 return RLIMIT_MSGQUEUE;
1306 case TARGET_RLIMIT_NICE:
1307 return RLIMIT_NICE;
1308 case TARGET_RLIMIT_NOFILE:
1309 return RLIMIT_NOFILE;
1310 case TARGET_RLIMIT_NPROC:
1311 return RLIMIT_NPROC;
1312 case TARGET_RLIMIT_RSS:
1313 return RLIMIT_RSS;
1314 case TARGET_RLIMIT_RTPRIO:
1315 return RLIMIT_RTPRIO;
1316 case TARGET_RLIMIT_SIGPENDING:
1317 return RLIMIT_SIGPENDING;
1318 case TARGET_RLIMIT_STACK:
1319 return RLIMIT_STACK;
1320 default:
1321 return code;
1322 }
1323 }
1324
1325 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1326 abi_ulong target_tv_addr)
1327 {
1328 struct target_timeval *target_tv;
1329
1330 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1))
1331 return -TARGET_EFAULT;
1332
1333 __get_user(tv->tv_sec, &target_tv->tv_sec);
1334 __get_user(tv->tv_usec, &target_tv->tv_usec);
1335
1336 unlock_user_struct(target_tv, target_tv_addr, 0);
1337
1338 return 0;
1339 }
1340
1341 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1342 const struct timeval *tv)
1343 {
1344 struct target_timeval *target_tv;
1345
1346 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0))
1347 return -TARGET_EFAULT;
1348
1349 __put_user(tv->tv_sec, &target_tv->tv_sec);
1350 __put_user(tv->tv_usec, &target_tv->tv_usec);
1351
1352 unlock_user_struct(target_tv, target_tv_addr, 1);
1353
1354 return 0;
1355 }
1356
1357 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1358 abi_ulong target_tz_addr)
1359 {
1360 struct target_timezone *target_tz;
1361
1362 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1363 return -TARGET_EFAULT;
1364 }
1365
1366 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1367 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1368
1369 unlock_user_struct(target_tz, target_tz_addr, 0);
1370
1371 return 0;
1372 }
1373
1374 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1375 #include <mqueue.h>
1376
1377 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1378 abi_ulong target_mq_attr_addr)
1379 {
1380 struct target_mq_attr *target_mq_attr;
1381
1382 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1383 target_mq_attr_addr, 1))
1384 return -TARGET_EFAULT;
1385
1386 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1387 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1388 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1389 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1390
1391 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1392
1393 return 0;
1394 }
1395
1396 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1397 const struct mq_attr *attr)
1398 {
1399 struct target_mq_attr *target_mq_attr;
1400
1401 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1402 target_mq_attr_addr, 0))
1403 return -TARGET_EFAULT;
1404
1405 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1406 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1407 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1408 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1409
1410 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1411
1412 return 0;
1413 }
1414 #endif
1415
1416 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1417 /* do_select() must return target values and target errnos. */
1418 static abi_long do_select(int n,
1419 abi_ulong rfd_addr, abi_ulong wfd_addr,
1420 abi_ulong efd_addr, abi_ulong target_tv_addr)
1421 {
1422 fd_set rfds, wfds, efds;
1423 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1424 struct timeval tv;
1425 struct timespec ts, *ts_ptr;
1426 abi_long ret;
1427
1428 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1429 if (ret) {
1430 return ret;
1431 }
1432 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1433 if (ret) {
1434 return ret;
1435 }
1436 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1437 if (ret) {
1438 return ret;
1439 }
1440
1441 if (target_tv_addr) {
1442 if (copy_from_user_timeval(&tv, target_tv_addr))
1443 return -TARGET_EFAULT;
1444 ts.tv_sec = tv.tv_sec;
1445 ts.tv_nsec = tv.tv_usec * 1000;
1446 ts_ptr = &ts;
1447 } else {
1448 ts_ptr = NULL;
1449 }
1450
1451 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1452 ts_ptr, NULL));
1453
1454 if (!is_error(ret)) {
1455 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1456 return -TARGET_EFAULT;
1457 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1458 return -TARGET_EFAULT;
1459 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1460 return -TARGET_EFAULT;
1461
1462 if (target_tv_addr) {
1463 tv.tv_sec = ts.tv_sec;
1464 tv.tv_usec = ts.tv_nsec / 1000;
1465 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1466 return -TARGET_EFAULT;
1467 }
1468 }
1469 }
1470
1471 return ret;
1472 }
1473
1474 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1475 static abi_long do_old_select(abi_ulong arg1)
1476 {
1477 struct target_sel_arg_struct *sel;
1478 abi_ulong inp, outp, exp, tvp;
1479 long nsel;
1480
1481 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1482 return -TARGET_EFAULT;
1483 }
1484
1485 nsel = tswapal(sel->n);
1486 inp = tswapal(sel->inp);
1487 outp = tswapal(sel->outp);
1488 exp = tswapal(sel->exp);
1489 tvp = tswapal(sel->tvp);
1490
1491 unlock_user_struct(sel, arg1, 0);
1492
1493 return do_select(nsel, inp, outp, exp, tvp);
1494 }
1495 #endif
1496 #endif
1497
1498 static abi_long do_pipe2(int host_pipe[], int flags)
1499 {
1500 #ifdef CONFIG_PIPE2
1501 return pipe2(host_pipe, flags);
1502 #else
1503 return -ENOSYS;
1504 #endif
1505 }
1506
1507 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1508 int flags, int is_pipe2)
1509 {
1510 int host_pipe[2];
1511 abi_long ret;
1512 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1513
1514 if (is_error(ret))
1515 return get_errno(ret);
1516
1517 /* Several targets have special calling conventions for the original
1518 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1519 if (!is_pipe2) {
1520 #if defined(TARGET_ALPHA)
1521 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1522 return host_pipe[0];
1523 #elif defined(TARGET_MIPS)
1524 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1525 return host_pipe[0];
1526 #elif defined(TARGET_SH4)
1527 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1528 return host_pipe[0];
1529 #elif defined(TARGET_SPARC)
1530 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1531 return host_pipe[0];
1532 #endif
1533 }
1534
1535 if (put_user_s32(host_pipe[0], pipedes)
1536 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1537 return -TARGET_EFAULT;
1538 return get_errno(ret);
1539 }
1540
1541 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1542 abi_ulong target_addr,
1543 socklen_t len)
1544 {
1545 struct target_ip_mreqn *target_smreqn;
1546
1547 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1548 if (!target_smreqn)
1549 return -TARGET_EFAULT;
1550 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1551 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1552 if (len == sizeof(struct target_ip_mreqn))
1553 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1554 unlock_user(target_smreqn, target_addr, 0);
1555
1556 return 0;
1557 }
1558
1559 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1560 abi_ulong target_addr,
1561 socklen_t len)
1562 {
1563 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1564 sa_family_t sa_family;
1565 struct target_sockaddr *target_saddr;
1566
1567 if (fd_trans_target_to_host_addr(fd)) {
1568 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1569 }
1570
1571 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1572 if (!target_saddr)
1573 return -TARGET_EFAULT;
1574
1575 sa_family = tswap16(target_saddr->sa_family);
1576
1577 /* Oops. The caller might send a incomplete sun_path; sun_path
1578 * must be terminated by \0 (see the manual page), but
1579 * unfortunately it is quite common to specify sockaddr_un
1580 * length as "strlen(x->sun_path)" while it should be
1581 * "strlen(...) + 1". We'll fix that here if needed.
1582 * Linux kernel has a similar feature.
1583 */
1584
1585 if (sa_family == AF_UNIX) {
1586 if (len < unix_maxlen && len > 0) {
1587 char *cp = (char*)target_saddr;
1588
1589 if ( cp[len-1] && !cp[len] )
1590 len++;
1591 }
1592 if (len > unix_maxlen)
1593 len = unix_maxlen;
1594 }
1595
1596 memcpy(addr, target_saddr, len);
1597 addr->sa_family = sa_family;
1598 if (sa_family == AF_NETLINK) {
1599 struct sockaddr_nl *nladdr;
1600
1601 nladdr = (struct sockaddr_nl *)addr;
1602 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1603 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1604 } else if (sa_family == AF_PACKET) {
1605 struct target_sockaddr_ll *lladdr;
1606
1607 lladdr = (struct target_sockaddr_ll *)addr;
1608 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1609 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1610 }
1611 unlock_user(target_saddr, target_addr, 0);
1612
1613 return 0;
1614 }
1615
1616 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1617 struct sockaddr *addr,
1618 socklen_t len)
1619 {
1620 struct target_sockaddr *target_saddr;
1621
1622 if (len == 0) {
1623 return 0;
1624 }
1625
1626 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1627 if (!target_saddr)
1628 return -TARGET_EFAULT;
1629 memcpy(target_saddr, addr, len);
1630 if (len >= offsetof(struct target_sockaddr, sa_family) +
1631 sizeof(target_saddr->sa_family)) {
1632 target_saddr->sa_family = tswap16(addr->sa_family);
1633 }
1634 if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) {
1635 struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr;
1636 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1637 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1638 } else if (addr->sa_family == AF_PACKET) {
1639 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1640 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1641 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1642 } else if (addr->sa_family == AF_INET6 &&
1643 len >= sizeof(struct target_sockaddr_in6)) {
1644 struct target_sockaddr_in6 *target_in6 =
1645 (struct target_sockaddr_in6 *)target_saddr;
1646 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1647 }
1648 unlock_user(target_saddr, target_addr, len);
1649
1650 return 0;
1651 }
1652
1653 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1654 struct target_msghdr *target_msgh)
1655 {
1656 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1657 abi_long msg_controllen;
1658 abi_ulong target_cmsg_addr;
1659 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1660 socklen_t space = 0;
1661
1662 msg_controllen = tswapal(target_msgh->msg_controllen);
1663 if (msg_controllen < sizeof (struct target_cmsghdr))
1664 goto the_end;
1665 target_cmsg_addr = tswapal(target_msgh->msg_control);
1666 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1667 target_cmsg_start = target_cmsg;
1668 if (!target_cmsg)
1669 return -TARGET_EFAULT;
1670
1671 while (cmsg && target_cmsg) {
1672 void *data = CMSG_DATA(cmsg);
1673 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1674
1675 int len = tswapal(target_cmsg->cmsg_len)
1676 - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
1677
1678 space += CMSG_SPACE(len);
1679 if (space > msgh->msg_controllen) {
1680 space -= CMSG_SPACE(len);
1681 /* This is a QEMU bug, since we allocated the payload
1682 * area ourselves (unlike overflow in host-to-target
1683 * conversion, which is just the guest giving us a buffer
1684 * that's too small). It can't happen for the payload types
1685 * we currently support; if it becomes an issue in future
1686 * we would need to improve our allocation strategy to
1687 * something more intelligent than "twice the size of the
1688 * target buffer we're reading from".
1689 */
1690 gemu_log("Host cmsg overflow\n");
1691 break;
1692 }
1693
1694 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1695 cmsg->cmsg_level = SOL_SOCKET;
1696 } else {
1697 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1698 }
1699 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1700 cmsg->cmsg_len = CMSG_LEN(len);
1701
1702 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1703 int *fd = (int *)data;
1704 int *target_fd = (int *)target_data;
1705 int i, numfds = len / sizeof(int);
1706
1707 for (i = 0; i < numfds; i++) {
1708 __get_user(fd[i], target_fd + i);
1709 }
1710 } else if (cmsg->cmsg_level == SOL_SOCKET
1711 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1712 struct ucred *cred = (struct ucred *)data;
1713 struct target_ucred *target_cred =
1714 (struct target_ucred *)target_data;
1715
1716 __get_user(cred->pid, &target_cred->pid);
1717 __get_user(cred->uid, &target_cred->uid);
1718 __get_user(cred->gid, &target_cred->gid);
1719 } else {
1720 gemu_log("Unsupported ancillary data: %d/%d\n",
1721 cmsg->cmsg_level, cmsg->cmsg_type);
1722 memcpy(data, target_data, len);
1723 }
1724
1725 cmsg = CMSG_NXTHDR(msgh, cmsg);
1726 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1727 target_cmsg_start);
1728 }
1729 unlock_user(target_cmsg, target_cmsg_addr, 0);
1730 the_end:
1731 msgh->msg_controllen = space;
1732 return 0;
1733 }
1734
1735 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1736 struct msghdr *msgh)
1737 {
1738 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1739 abi_long msg_controllen;
1740 abi_ulong target_cmsg_addr;
1741 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1742 socklen_t space = 0;
1743
1744 msg_controllen = tswapal(target_msgh->msg_controllen);
1745 if (msg_controllen < sizeof (struct target_cmsghdr))
1746 goto the_end;
1747 target_cmsg_addr = tswapal(target_msgh->msg_control);
1748 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1749 target_cmsg_start = target_cmsg;
1750 if (!target_cmsg)
1751 return -TARGET_EFAULT;
1752
1753 while (cmsg && target_cmsg) {
1754 void *data = CMSG_DATA(cmsg);
1755 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1756
1757 int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
1758 int tgt_len, tgt_space;
1759
1760 /* We never copy a half-header but may copy half-data;
1761 * this is Linux's behaviour in put_cmsg(). Note that
1762 * truncation here is a guest problem (which we report
1763 * to the guest via the CTRUNC bit), unlike truncation
1764 * in target_to_host_cmsg, which is a QEMU bug.
1765 */
1766 if (msg_controllen < sizeof(struct cmsghdr)) {
1767 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1768 break;
1769 }
1770
1771 if (cmsg->cmsg_level == SOL_SOCKET) {
1772 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1773 } else {
1774 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1775 }
1776 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1777
1778 tgt_len = TARGET_CMSG_LEN(len);
1779
1780 /* Payload types which need a different size of payload on
1781 * the target must adjust tgt_len here.
1782 */
1783 switch (cmsg->cmsg_level) {
1784 case SOL_SOCKET:
1785 switch (cmsg->cmsg_type) {
1786 case SO_TIMESTAMP:
1787 tgt_len = sizeof(struct target_timeval);
1788 break;
1789 default:
1790 break;
1791 }
1792 default:
1793 break;
1794 }
1795
1796 if (msg_controllen < tgt_len) {
1797 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1798 tgt_len = msg_controllen;
1799 }
1800
1801 /* We must now copy-and-convert len bytes of payload
1802 * into tgt_len bytes of destination space. Bear in mind
1803 * that in both source and destination we may be dealing
1804 * with a truncated value!
1805 */
1806 switch (cmsg->cmsg_level) {
1807 case SOL_SOCKET:
1808 switch (cmsg->cmsg_type) {
1809 case SCM_RIGHTS:
1810 {
1811 int *fd = (int *)data;
1812 int *target_fd = (int *)target_data;
1813 int i, numfds = tgt_len / sizeof(int);
1814
1815 for (i = 0; i < numfds; i++) {
1816 __put_user(fd[i], target_fd + i);
1817 }
1818 break;
1819 }
1820 case SO_TIMESTAMP:
1821 {
1822 struct timeval *tv = (struct timeval *)data;
1823 struct target_timeval *target_tv =
1824 (struct target_timeval *)target_data;
1825
1826 if (len != sizeof(struct timeval) ||
1827 tgt_len != sizeof(struct target_timeval)) {
1828 goto unimplemented;
1829 }
1830
1831 /* copy struct timeval to target */
1832 __put_user(tv->tv_sec, &target_tv->tv_sec);
1833 __put_user(tv->tv_usec, &target_tv->tv_usec);
1834 break;
1835 }
1836 case SCM_CREDENTIALS:
1837 {
1838 struct ucred *cred = (struct ucred *)data;
1839 struct target_ucred *target_cred =
1840 (struct target_ucred *)target_data;
1841
1842 __put_user(cred->pid, &target_cred->pid);
1843 __put_user(cred->uid, &target_cred->uid);
1844 __put_user(cred->gid, &target_cred->gid);
1845 break;
1846 }
1847 default:
1848 goto unimplemented;
1849 }
1850 break;
1851
1852 case SOL_IP:
1853 switch (cmsg->cmsg_type) {
1854 case IP_TTL:
1855 {
1856 uint32_t *v = (uint32_t *)data;
1857 uint32_t *t_int = (uint32_t *)target_data;
1858
1859 __put_user(*v, t_int);
1860 break;
1861 }
1862 case IP_RECVERR:
1863 {
1864 struct errhdr_t {
1865 struct sock_extended_err ee;
1866 struct sockaddr_in offender;
1867 };
1868 struct errhdr_t *errh = (struct errhdr_t *)data;
1869 struct errhdr_t *target_errh =
1870 (struct errhdr_t *)target_data;
1871
1872 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1873 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1874 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1875 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1876 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1877 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1878 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1879 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1880 (void *) &errh->offender, sizeof(errh->offender));
1881 break;
1882 }
1883 default:
1884 goto unimplemented;
1885 }
1886 break;
1887
1888 case SOL_IPV6:
1889 switch (cmsg->cmsg_type) {
1890 case IPV6_HOPLIMIT:
1891 {
1892 uint32_t *v = (uint32_t *)data;
1893 uint32_t *t_int = (uint32_t *)target_data;
1894
1895 __put_user(*v, t_int);
1896 break;
1897 }
1898 case IPV6_RECVERR:
1899 {
1900 struct errhdr6_t {
1901 struct sock_extended_err ee;
1902 struct sockaddr_in6 offender;
1903 };
1904 struct errhdr6_t *errh = (struct errhdr6_t *)data;
1905 struct errhdr6_t *target_errh =
1906 (struct errhdr6_t *)target_data;
1907
1908 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1909 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1910 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1911 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1912 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1913 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1914 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1915 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1916 (void *) &errh->offender, sizeof(errh->offender));
1917 break;
1918 }
1919 default:
1920 goto unimplemented;
1921 }
1922 break;
1923
1924 default:
1925 unimplemented:
1926 gemu_log("Unsupported ancillary data: %d/%d\n",
1927 cmsg->cmsg_level, cmsg->cmsg_type);
1928 memcpy(target_data, data, MIN(len, tgt_len));
1929 if (tgt_len > len) {
1930 memset(target_data + len, 0, tgt_len - len);
1931 }
1932 }
1933
1934 target_cmsg->cmsg_len = tswapal(tgt_len);
1935 tgt_space = TARGET_CMSG_SPACE(len);
1936 if (msg_controllen < tgt_space) {
1937 tgt_space = msg_controllen;
1938 }
1939 msg_controllen -= tgt_space;
1940 space += tgt_space;
1941 cmsg = CMSG_NXTHDR(msgh, cmsg);
1942 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1943 target_cmsg_start);
1944 }
1945 unlock_user(target_cmsg, target_cmsg_addr, space);
1946 the_end:
1947 target_msgh->msg_controllen = tswapal(space);
1948 return 0;
1949 }
1950
1951 static void tswap_nlmsghdr(struct nlmsghdr *nlh)
1952 {
1953 nlh->nlmsg_len = tswap32(nlh->nlmsg_len);
1954 nlh->nlmsg_type = tswap16(nlh->nlmsg_type);
1955 nlh->nlmsg_flags = tswap16(nlh->nlmsg_flags);
1956 nlh->nlmsg_seq = tswap32(nlh->nlmsg_seq);
1957 nlh->nlmsg_pid = tswap32(nlh->nlmsg_pid);
1958 }
1959
1960 static abi_long host_to_target_for_each_nlmsg(struct nlmsghdr *nlh,
1961 size_t len,
1962 abi_long (*host_to_target_nlmsg)
1963 (struct nlmsghdr *))
1964 {
1965 uint32_t nlmsg_len;
1966 abi_long ret;
1967
1968 while (len > sizeof(struct nlmsghdr)) {
1969
1970 nlmsg_len = nlh->nlmsg_len;
1971 if (nlmsg_len < sizeof(struct nlmsghdr) ||
1972 nlmsg_len > len) {
1973 break;
1974 }
1975
1976 switch (nlh->nlmsg_type) {
1977 case NLMSG_DONE:
1978 tswap_nlmsghdr(nlh);
1979 return 0;
1980 case NLMSG_NOOP:
1981 break;
1982 case NLMSG_ERROR:
1983 {
1984 struct nlmsgerr *e = NLMSG_DATA(nlh);
1985 e->error = tswap32(e->error);
1986 tswap_nlmsghdr(&e->msg);
1987 tswap_nlmsghdr(nlh);
1988 return 0;
1989 }
1990 default:
1991 ret = host_to_target_nlmsg(nlh);
1992 if (ret < 0) {
1993 tswap_nlmsghdr(nlh);
1994 return ret;
1995 }
1996 break;
1997 }
1998 tswap_nlmsghdr(nlh);
1999 len -= NLMSG_ALIGN(nlmsg_len);
2000 nlh = (struct nlmsghdr *)(((char*)nlh) + NLMSG_ALIGN(nlmsg_len));
2001 }
2002 return 0;
2003 }
2004
2005 static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh,
2006 size_t len,
2007 abi_long (*target_to_host_nlmsg)
2008 (struct nlmsghdr *))
2009 {
2010 int ret;
2011
2012 while (len > sizeof(struct nlmsghdr)) {
2013 if (tswap32(nlh->nlmsg_len) < sizeof(struct nlmsghdr) ||
2014 tswap32(nlh->nlmsg_len) > len) {
2015 break;
2016 }
2017 tswap_nlmsghdr(nlh);
2018 switch (nlh->nlmsg_type) {
2019 case NLMSG_DONE:
2020 return 0;
2021 case NLMSG_NOOP:
2022 break;
2023 case NLMSG_ERROR:
2024 {
2025 struct nlmsgerr *e = NLMSG_DATA(nlh);
2026 e->error = tswap32(e->error);
2027 tswap_nlmsghdr(&e->msg);
2028 return 0;
2029 }
2030 default:
2031 ret = target_to_host_nlmsg(nlh);
2032 if (ret < 0) {
2033 return ret;
2034 }
2035 }
2036 len -= NLMSG_ALIGN(nlh->nlmsg_len);
2037 nlh = (struct nlmsghdr *)(((char *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len));
2038 }
2039 return 0;
2040 }
2041
2042 #ifdef CONFIG_RTNETLINK
2043 static abi_long host_to_target_for_each_nlattr(struct nlattr *nlattr,
2044 size_t len, void *context,
2045 abi_long (*host_to_target_nlattr)
2046 (struct nlattr *,
2047 void *context))
2048 {
2049 unsigned short nla_len;
2050 abi_long ret;
2051
2052 while (len > sizeof(struct nlattr)) {
2053 nla_len = nlattr->nla_len;
2054 if (nla_len < sizeof(struct nlattr) ||
2055 nla_len > len) {
2056 break;
2057 }
2058 ret = host_to_target_nlattr(nlattr, context);
2059 nlattr->nla_len = tswap16(nlattr->nla_len);
2060 nlattr->nla_type = tswap16(nlattr->nla_type);
2061 if (ret < 0) {
2062 return ret;
2063 }
2064 len -= NLA_ALIGN(nla_len);
2065 nlattr = (struct nlattr *)(((char *)nlattr) + NLA_ALIGN(nla_len));
2066 }
2067 return 0;
2068 }
2069
2070 static abi_long host_to_target_for_each_rtattr(struct rtattr *rtattr,
2071 size_t len,
2072 abi_long (*host_to_target_rtattr)
2073 (struct rtattr *))
2074 {
2075 unsigned short rta_len;
2076 abi_long ret;
2077
2078 while (len > sizeof(struct rtattr)) {
2079 rta_len = rtattr->rta_len;
2080 if (rta_len < sizeof(struct rtattr) ||
2081 rta_len > len) {
2082 break;
2083 }
2084 ret = host_to_target_rtattr(rtattr);
2085 rtattr->rta_len = tswap16(rtattr->rta_len);
2086 rtattr->rta_type = tswap16(rtattr->rta_type);
2087 if (ret < 0) {
2088 return ret;
2089 }
2090 len -= RTA_ALIGN(rta_len);
2091 rtattr = (struct rtattr *)(((char *)rtattr) + RTA_ALIGN(rta_len));
2092 }
2093 return 0;
2094 }
2095
2096 #define NLA_DATA(nla) ((void *)((char *)(nla)) + NLA_HDRLEN)
2097
2098 static abi_long host_to_target_data_bridge_nlattr(struct nlattr *nlattr,
2099 void *context)
2100 {
2101 uint16_t *u16;
2102 uint32_t *u32;
2103 uint64_t *u64;
2104
2105 switch (nlattr->nla_type) {
2106 /* no data */
2107 case QEMU_IFLA_BR_FDB_FLUSH:
2108 break;
2109 /* binary */
2110 case QEMU_IFLA_BR_GROUP_ADDR:
2111 break;
2112 /* uint8_t */
2113 case QEMU_IFLA_BR_VLAN_FILTERING:
2114 case QEMU_IFLA_BR_TOPOLOGY_CHANGE:
2115 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED:
2116 case QEMU_IFLA_BR_MCAST_ROUTER:
2117 case QEMU_IFLA_BR_MCAST_SNOOPING:
2118 case QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR:
2119 case QEMU_IFLA_BR_MCAST_QUERIER:
2120 case QEMU_IFLA_BR_NF_CALL_IPTABLES:
2121 case QEMU_IFLA_BR_NF_CALL_IP6TABLES:
2122 case QEMU_IFLA_BR_NF_CALL_ARPTABLES:
2123 break;
2124 /* uint16_t */
2125 case QEMU_IFLA_BR_PRIORITY:
2126 case QEMU_IFLA_BR_VLAN_PROTOCOL:
2127 case QEMU_IFLA_BR_GROUP_FWD_MASK:
2128 case QEMU_IFLA_BR_ROOT_PORT:
2129 case QEMU_IFLA_BR_VLAN_DEFAULT_PVID:
2130 u16 = NLA_DATA(nlattr);
2131 *u16 = tswap16(*u16);
2132 break;
2133 /* uint32_t */
2134 case QEMU_IFLA_BR_FORWARD_DELAY:
2135 case QEMU_IFLA_BR_HELLO_TIME:
2136 case QEMU_IFLA_BR_MAX_AGE:
2137 case QEMU_IFLA_BR_AGEING_TIME:
2138 case QEMU_IFLA_BR_STP_STATE:
2139 case QEMU_IFLA_BR_ROOT_PATH_COST:
2140 case QEMU_IFLA_BR_MCAST_HASH_ELASTICITY:
2141 case QEMU_IFLA_BR_MCAST_HASH_MAX:
2142 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT:
2143 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT:
2144 u32 = NLA_DATA(nlattr);
2145 *u32 = tswap32(*u32);
2146 break;
2147 /* uint64_t */
2148 case QEMU_IFLA_BR_HELLO_TIMER:
2149 case QEMU_IFLA_BR_TCN_TIMER:
2150 case QEMU_IFLA_BR_GC_TIMER:
2151 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER:
2152 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL:
2153 case QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL:
2154 case QEMU_IFLA_BR_MCAST_QUERIER_INTVL:
2155 case QEMU_IFLA_BR_MCAST_QUERY_INTVL:
2156 case QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL:
2157 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL:
2158 u64 = NLA_DATA(nlattr);
2159 *u64 = tswap64(*u64);
2160 break;
2161 /* ifla_bridge_id: uin8_t[] */
2162 case QEMU_IFLA_BR_ROOT_ID:
2163 case QEMU_IFLA_BR_BRIDGE_ID:
2164 break;
2165 default:
2166 gemu_log("Unknown QEMU_IFLA_BR type %d\n", nlattr->nla_type);
2167 break;
2168 }
2169 return 0;
2170 }
2171
2172 static abi_long host_to_target_slave_data_bridge_nlattr(struct nlattr *nlattr,
2173 void *context)
2174 {
2175 uint16_t *u16;
2176 uint32_t *u32;
2177 uint64_t *u64;
2178
2179 switch (nlattr->nla_type) {
2180 /* uint8_t */
2181 case QEMU_IFLA_BRPORT_STATE:
2182 case QEMU_IFLA_BRPORT_MODE:
2183 case QEMU_IFLA_BRPORT_GUARD:
2184 case QEMU_IFLA_BRPORT_PROTECT:
2185 case QEMU_IFLA_BRPORT_FAST_LEAVE:
2186 case QEMU_IFLA_BRPORT_LEARNING:
2187 case QEMU_IFLA_BRPORT_UNICAST_FLOOD:
2188 case QEMU_IFLA_BRPORT_PROXYARP:
2189 case QEMU_IFLA_BRPORT_LEARNING_SYNC:
2190 case QEMU_IFLA_BRPORT_PROXYARP_WIFI:
2191 case QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK:
2192 case QEMU_IFLA_BRPORT_CONFIG_PENDING:
2193 case QEMU_IFLA_BRPORT_MULTICAST_ROUTER:
2194 break;
2195 /* uint16_t */
2196 case QEMU_IFLA_BRPORT_PRIORITY:
2197 case QEMU_IFLA_BRPORT_DESIGNATED_PORT:
2198 case QEMU_IFLA_BRPORT_DESIGNATED_COST:
2199 case QEMU_IFLA_BRPORT_ID:
2200 case QEMU_IFLA_BRPORT_NO:
2201 u16 = NLA_DATA(nlattr);
2202 *u16 = tswap16(*u16);
2203 break;
2204 /* uin32_t */
2205 case QEMU_IFLA_BRPORT_COST:
2206 u32 = NLA_DATA(nlattr);
2207 *u32 = tswap32(*u32);
2208 break;
2209 /* uint64_t */
2210 case QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER:
2211 case QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER:
2212 case QEMU_IFLA_BRPORT_HOLD_TIMER:
2213 u64 = NLA_DATA(nlattr);
2214 *u64 = tswap64(*u64);
2215 break;
2216 /* ifla_bridge_id: uint8_t[] */
2217 case QEMU_IFLA_BRPORT_ROOT_ID:
2218 case QEMU_IFLA_BRPORT_BRIDGE_ID:
2219 break;
2220 default:
2221 gemu_log("Unknown QEMU_IFLA_BRPORT type %d\n", nlattr->nla_type);
2222 break;
2223 }
2224 return 0;
2225 }
2226
2227 struct linkinfo_context {
2228 int len;
2229 char *name;
2230 int slave_len;
2231 char *slave_name;
2232 };
2233
2234 static abi_long host_to_target_data_linkinfo_nlattr(struct nlattr *nlattr,
2235 void *context)
2236 {
2237 struct linkinfo_context *li_context = context;
2238
2239 switch (nlattr->nla_type) {
2240 /* string */
2241 case QEMU_IFLA_INFO_KIND:
2242 li_context->name = NLA_DATA(nlattr);
2243 li_context->len = nlattr->nla_len - NLA_HDRLEN;
2244 break;
2245 case QEMU_IFLA_INFO_SLAVE_KIND:
2246 li_context->slave_name = NLA_DATA(nlattr);
2247 li_context->slave_len = nlattr->nla_len - NLA_HDRLEN;
2248 break;
2249 /* stats */
2250 case QEMU_IFLA_INFO_XSTATS:
2251 /* FIXME: only used by CAN */
2252 break;
2253 /* nested */
2254 case QEMU_IFLA_INFO_DATA:
2255 if (strncmp(li_context->name, "bridge",
2256 li_context->len) == 0) {
2257 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
2258 nlattr->nla_len,
2259 NULL,
2260 host_to_target_data_bridge_nlattr);
2261 } else {
2262 gemu_log("Unknown QEMU_IFLA_INFO_KIND %s\n", li_context->name);
2263 }
2264 break;
2265 case QEMU_IFLA_INFO_SLAVE_DATA:
2266 if (strncmp(li_context->slave_name, "bridge",
2267 li_context->slave_len) == 0) {
2268 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
2269 nlattr->nla_len,
2270 NULL,
2271 host_to_target_slave_data_bridge_nlattr);
2272 } else {
2273 gemu_log("Unknown QEMU_IFLA_INFO_SLAVE_KIND %s\n",
2274 li_context->slave_name);
2275 }
2276 break;
2277 default:
2278 gemu_log("Unknown host QEMU_IFLA_INFO type: %d\n", nlattr->nla_type);
2279 break;
2280 }
2281
2282 return 0;
2283 }
2284
2285 static abi_long host_to_target_data_inet_nlattr(struct nlattr *nlattr,
2286 void *context)
2287 {
2288 uint32_t *u32;
2289 int i;
2290
2291 switch (nlattr->nla_type) {
2292 case QEMU_IFLA_INET_CONF:
2293 u32 = NLA_DATA(nlattr);
2294 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
2295 i++) {
2296 u32[i] = tswap32(u32[i]);
2297 }
2298 break;
2299 default:
2300 gemu_log("Unknown host AF_INET type: %d\n", nlattr->nla_type);
2301 }
2302 return 0;
2303 }
2304
2305 static abi_long host_to_target_data_inet6_nlattr(struct nlattr *nlattr,
2306 void *context)
2307 {
2308 uint32_t *u32;
2309 uint64_t *u64;
2310 struct ifla_cacheinfo *ci;
2311 int i;
2312
2313 switch (nlattr->nla_type) {
2314 /* binaries */
2315 case QEMU_IFLA_INET6_TOKEN:
2316 break;
2317 /* uint8_t */
2318 case QEMU_IFLA_INET6_ADDR_GEN_MODE:
2319 break;
2320 /* uint32_t */
2321 case QEMU_IFLA_INET6_FLAGS:
2322 u32 = NLA_DATA(nlattr);
2323 *u32 = tswap32(*u32);
2324 break;
2325 /* uint32_t[] */
2326 case QEMU_IFLA_INET6_CONF:
2327 u32 = NLA_DATA(nlattr);
2328 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
2329 i++) {
2330 u32[i] = tswap32(u32[i]);
2331 }
2332 break;
2333 /* ifla_cacheinfo */
2334 case QEMU_IFLA_INET6_CACHEINFO:
2335 ci = NLA_DATA(nlattr);
2336 ci->max_reasm_len = tswap32(ci->max_reasm_len);
2337 ci->tstamp = tswap32(ci->tstamp);
2338 ci->reachable_time = tswap32(ci->reachable_time);
2339 ci->retrans_time = tswap32(ci->retrans_time);
2340 break;
2341 /* uint64_t[] */
2342 case QEMU_IFLA_INET6_STATS:
2343 case QEMU_IFLA_INET6_ICMP6STATS:
2344 u64 = NLA_DATA(nlattr);
2345 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u64);
2346 i++) {
2347 u64[i] = tswap64(u64[i]);
2348 }
2349 break;
2350 default:
2351 gemu_log("Unknown host AF_INET6 type: %d\n", nlattr->nla_type);
2352 }
2353 return 0;
2354 }
2355
2356 static abi_long host_to_target_data_spec_nlattr(struct nlattr *nlattr,
2357 void *context)
2358 {
2359 switch (nlattr->nla_type) {
2360 case AF_INET:
2361 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
2362 NULL,
2363 host_to_target_data_inet_nlattr);
2364 case AF_INET6:
2365 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
2366 NULL,
2367 host_to_target_data_inet6_nlattr);
2368 default:
2369 gemu_log("Unknown host AF_SPEC type: %d\n", nlattr->nla_type);
2370 break;
2371 }
2372 return 0;
2373 }
2374
2375 static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr)
2376 {
2377 uint32_t *u32;
2378 struct rtnl_link_stats *st;
2379 struct rtnl_link_stats64 *st64;
2380 struct rtnl_link_ifmap *map;
2381 struct linkinfo_context li_context;
2382
2383 switch (rtattr->rta_type) {
2384 /* binary stream */
2385 case QEMU_IFLA_ADDRESS:
2386 case QEMU_IFLA_BROADCAST:
2387 /* string */
2388 case QEMU_IFLA_IFNAME:
2389 case QEMU_IFLA_QDISC:
2390 break;
2391 /* uin8_t */
2392 case QEMU_IFLA_OPERSTATE:
2393 case QEMU_IFLA_LINKMODE:
2394 case QEMU_IFLA_CARRIER:
2395 case QEMU_IFLA_PROTO_DOWN:
2396 break;
2397 /* uint32_t */
2398 case QEMU_IFLA_MTU:
2399 case QEMU_IFLA_LINK:
2400 case QEMU_IFLA_WEIGHT:
2401 case QEMU_IFLA_TXQLEN:
2402 case QEMU_IFLA_CARRIER_CHANGES:
2403 case QEMU_IFLA_NUM_RX_QUEUES:
2404 case QEMU_IFLA_NUM_TX_QUEUES:
2405 case QEMU_IFLA_PROMISCUITY:
2406 case QEMU_IFLA_EXT_MASK:
2407 case QEMU_IFLA_LINK_NETNSID:
2408 case QEMU_IFLA_GROUP:
2409 case QEMU_IFLA_MASTER:
2410 case QEMU_IFLA_NUM_VF:
2411 case QEMU_IFLA_GSO_MAX_SEGS:
2412 case QEMU_IFLA_GSO_MAX_SIZE:
2413 u32 = RTA_DATA(rtattr);
2414 *u32 = tswap32(*u32);
2415 break;
2416 /* struct rtnl_link_stats */
2417 case QEMU_IFLA_STATS:
2418 st = RTA_DATA(rtattr);
2419 st->rx_packets = tswap32(st->rx_packets);
2420 st->tx_packets = tswap32(st->tx_packets);
2421 st->rx_bytes = tswap32(st->rx_bytes);
2422 st->tx_bytes = tswap32(st->tx_bytes);
2423 st->rx_errors = tswap32(st->rx_errors);
2424 st->tx_errors = tswap32(st->tx_errors);
2425 st->rx_dropped = tswap32(st->rx_dropped);
2426 st->tx_dropped = tswap32(st->tx_dropped);
2427 st->multicast = tswap32(st->multicast);
2428 st->collisions = tswap32(st->collisions);
2429
2430 /* detailed rx_errors: */
2431 st->rx_length_errors = tswap32(st->rx_length_errors);
2432 st->rx_over_errors = tswap32(st->rx_over_errors);
2433 st->rx_crc_errors = tswap32(st->rx_crc_errors);
2434 st->rx_frame_errors = tswap32(st->rx_frame_errors);
2435 st->rx_fifo_errors = tswap32(st->rx_fifo_errors);
2436 st->rx_missed_errors = tswap32(st->rx_missed_errors);
2437
2438 /* detailed tx_errors */
2439 st->tx_aborted_errors = tswap32(st->tx_aborted_errors);
2440 st->tx_carrier_errors = tswap32(st->tx_carrier_errors);
2441 st->tx_fifo_errors = tswap32(st->tx_fifo_errors);
2442 st->tx_heartbeat_errors = tswap32(st->tx_heartbeat_errors);
2443 st->tx_window_errors = tswap32(st->tx_window_errors);
2444
2445 /* for cslip etc */
2446 st->rx_compressed = tswap32(st->rx_compressed);
2447 st->tx_compressed = tswap32(st->tx_compressed);
2448 break;
2449 /* struct rtnl_link_stats64 */
2450 case QEMU_IFLA_STATS64:
2451 st64 = RTA_DATA(rtattr);
2452 st64->rx_packets = tswap64(st64->rx_packets);
2453 st64->tx_packets = tswap64(st64->tx_packets);
2454 st64->rx_bytes = tswap64(st64->rx_bytes);
2455 st64->tx_bytes = tswap64(st64->tx_bytes);
2456 st64->rx_errors = tswap64(st64->rx_errors);
2457 st64->tx_errors = tswap64(st64->tx_errors);
2458 st64->rx_dropped = tswap64(st64->rx_dropped);
2459 st64->tx_dropped = tswap64(st64->tx_dropped);
2460 st64->multicast = tswap64(st64->multicast);
2461 st64->collisions = tswap64(st64->collisions);
2462
2463 /* detailed rx_errors: */
2464 st64->rx_length_errors = tswap64(st64->rx_length_errors);
2465 st64->rx_over_errors = tswap64(st64->rx_over_errors);
2466 st64->rx_crc_errors = tswap64(st64->rx_crc_errors);
2467 st64->rx_frame_errors = tswap64(st64->rx_frame_errors);
2468 st64->rx_fifo_errors = tswap64(st64->rx_fifo_errors);
2469 st64->rx_missed_errors = tswap64(st64->rx_missed_errors);
2470
2471 /* detailed tx_errors */
2472 st64->tx_aborted_errors = tswap64(st64->tx_aborted_errors);
2473 st64->tx_carrier_errors = tswap64(st64->tx_carrier_errors);
2474 st64->tx_fifo_errors = tswap64(st64->tx_fifo_errors);
2475 st64->tx_heartbeat_errors = tswap64(st64->tx_heartbeat_errors);
2476 st64->tx_window_errors = tswap64(st64->tx_window_errors);
2477
2478 /* for cslip etc */
2479 st64->rx_compressed = tswap64(st64->rx_compressed);
2480 st64->tx_compressed = tswap64(st64->tx_compressed);
2481 break;
2482 /* struct rtnl_link_ifmap */
2483 case QEMU_IFLA_MAP:
2484 map = RTA_DATA(rtattr);
2485 map->mem_start = tswap64(map->mem_start);
2486 map->mem_end = tswap64(map->mem_end);
2487 map->base_addr = tswap64(map->base_addr);
2488 map->irq = tswap16(map->irq);
2489 break;
2490 /* nested */
2491 case QEMU_IFLA_LINKINFO:
2492 memset(&li_context, 0, sizeof(li_context));
2493 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
2494 &li_context,
2495 host_to_target_data_linkinfo_nlattr);
2496 case QEMU_IFLA_AF_SPEC:
2497 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
2498 NULL,
2499 host_to_target_data_spec_nlattr);
2500 default:
2501 gemu_log("Unknown host QEMU_IFLA type: %d\n", rtattr->rta_type);
2502 break;
2503 }
2504 return 0;
2505 }
2506
2507 static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr)
2508 {
2509 uint32_t *u32;
2510 struct ifa_cacheinfo *ci;
2511
2512 switch (rtattr->rta_type) {
2513 /* binary: depends on family type */
2514 case IFA_ADDRESS:
2515 case IFA_LOCAL:
2516 break;
2517 /* string */
2518 case IFA_LABEL:
2519 break;
2520 /* u32 */
2521 case IFA_FLAGS:
2522 case IFA_BROADCAST:
2523 u32 = RTA_DATA(rtattr);
2524 *u32 = tswap32(*u32);
2525 break;
2526 /* struct ifa_cacheinfo */
2527 case IFA_CACHEINFO:
2528 ci = RTA_DATA(rtattr);
2529 ci->ifa_prefered = tswap32(ci->ifa_prefered);
2530 ci->ifa_valid = tswap32(ci->ifa_valid);
2531 ci->cstamp = tswap32(ci->cstamp);
2532 ci->tstamp = tswap32(ci->tstamp);
2533 break;
2534 default:
2535 gemu_log("Unknown host IFA type: %d\n", rtattr->rta_type);
2536 break;
2537 }
2538 return 0;
2539 }
2540
2541 static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr)
2542 {
2543 uint32_t *u32;
2544 switch (rtattr->rta_type) {
2545 /* binary: depends on family type */
2546 case RTA_GATEWAY:
2547 case RTA_DST:
2548 case RTA_PREFSRC:
2549 break;
2550 /* u32 */
2551 case RTA_PRIORITY:
2552 case RTA_TABLE:
2553 case RTA_OIF:
2554 u32 = RTA_DATA(rtattr);
2555 *u32 = tswap32(*u32);
2556 break;
2557 default:
2558 gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type);
2559 break;
2560 }
2561 return 0;
2562 }
2563
2564 static abi_long host_to_target_link_rtattr(struct rtattr *rtattr,
2565 uint32_t rtattr_len)
2566 {
2567 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2568 host_to_target_data_link_rtattr);
2569 }
2570
2571 static abi_long host_to_target_addr_rtattr(struct rtattr *rtattr,
2572 uint32_t rtattr_len)
2573 {
2574 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2575 host_to_target_data_addr_rtattr);
2576 }
2577
2578 static abi_long host_to_target_route_rtattr(struct rtattr *rtattr,
2579 uint32_t rtattr_len)
2580 {
2581 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2582 host_to_target_data_route_rtattr);
2583 }
2584
2585 static abi_long host_to_target_data_route(struct nlmsghdr *nlh)
2586 {
2587 uint32_t nlmsg_len;
2588 struct ifinfomsg *ifi;
2589 struct ifaddrmsg *ifa;
2590 struct rtmsg *rtm;
2591
2592 nlmsg_len = nlh->nlmsg_len;
2593 switch (nlh->nlmsg_type) {
2594 case RTM_NEWLINK:
2595 case RTM_DELLINK:
2596 case RTM_GETLINK:
2597 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
2598 ifi = NLMSG_DATA(nlh);
2599 ifi->ifi_type = tswap16(ifi->ifi_type);
2600 ifi->ifi_index = tswap32(ifi->ifi_index);
2601 ifi->ifi_flags = tswap32(ifi->ifi_flags);
2602 ifi->ifi_change = tswap32(ifi->ifi_change);
2603 host_to_target_link_rtattr(IFLA_RTA(ifi),
2604 nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
2605 }
2606 break;
2607 case RTM_NEWADDR:
2608 case RTM_DELADDR:
2609 case RTM_GETADDR:
2610 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
2611 ifa = NLMSG_DATA(nlh);
2612 ifa->ifa_index = tswap32(ifa->ifa_index);
2613 host_to_target_addr_rtattr(IFA_RTA(ifa),
2614 nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
2615 }
2616 break;
2617 case RTM_NEWROUTE:
2618 case RTM_DELROUTE:
2619 case RTM_GETROUTE:
2620 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
2621 rtm = NLMSG_DATA(nlh);
2622 rtm->rtm_flags = tswap32(rtm->rtm_flags);
2623 host_to_target_route_rtattr(RTM_RTA(rtm),
2624 nlmsg_len - NLMSG_LENGTH(sizeof(*rtm)));
2625 }
2626 break;
2627 default:
2628 return -TARGET_EINVAL;
2629 }
2630 return 0;
2631 }
2632
2633 static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh,
2634 size_t len)
2635 {
2636 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route);
2637 }
2638
2639 static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr,
2640 size_t len,
2641 abi_long (*target_to_host_rtattr)
2642 (struct rtattr *))
2643 {
2644 abi_long ret;
2645
2646 while (len >= sizeof(struct rtattr)) {
2647 if (tswap16(rtattr->rta_len) < sizeof(struct rtattr) ||
2648 tswap16(rtattr->rta_len) > len) {
2649 break;
2650 }
2651 rtattr->rta_len = tswap16(rtattr->rta_len);
2652 rtattr->rta_type = tswap16(rtattr->rta_type);
2653 ret = target_to_host_rtattr(rtattr);
2654 if (ret < 0) {
2655 return ret;
2656 }
2657 len -= RTA_ALIGN(rtattr->rta_len);
2658 rtattr = (struct rtattr *)(((char *)rtattr) +
2659 RTA_ALIGN(rtattr->rta_len));
2660 }
2661 return 0;
2662 }
2663
2664 static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr)
2665 {
2666 switch (rtattr->rta_type) {
2667 default:
2668 gemu_log("Unknown target QEMU_IFLA type: %d\n", rtattr->rta_type);
2669 break;
2670 }
2671 return 0;
2672 }
2673
2674 static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr)
2675 {
2676 switch (rtattr->rta_type) {
2677 /* binary: depends on family type */
2678 case IFA_LOCAL:
2679 case IFA_ADDRESS:
2680 break;
2681 default:
2682 gemu_log("Unknown target IFA type: %d\n", rtattr->rta_type);
2683 break;
2684 }
2685 return 0;
2686 }
2687
2688 static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr)
2689 {
2690 uint32_t *u32;
2691 switch (rtattr->rta_type) {
2692 /* binary: depends on family type */
2693 case RTA_DST:
2694 case RTA_SRC:
2695 case RTA_GATEWAY:
2696 break;
2697 /* u32 */
2698 case RTA_PRIORITY:
2699 case RTA_OIF:
2700 u32 = RTA_DATA(rtattr);
2701 *u32 = tswap32(*u32);
2702 break;
2703 default:
2704 gemu_log("Unknown target RTA type: %d\n", rtattr->rta_type);
2705 break;
2706 }
2707 return 0;
2708 }
2709
2710 static void target_to_host_link_rtattr(struct rtattr *rtattr,
2711 uint32_t rtattr_len)
2712 {
2713 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2714 target_to_host_data_link_rtattr);
2715 }
2716
2717 static void target_to_host_addr_rtattr(struct rtattr *rtattr,
2718 uint32_t rtattr_len)
2719 {
2720 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2721 target_to_host_data_addr_rtattr);
2722 }
2723
2724 static void target_to_host_route_rtattr(struct rtattr *rtattr,
2725 uint32_t rtattr_len)
2726 {
2727 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2728 target_to_host_data_route_rtattr);
2729 }
2730
2731 static abi_long target_to_host_data_route(struct nlmsghdr *nlh)
2732 {
2733 struct ifinfomsg *ifi;
2734 struct ifaddrmsg *ifa;
2735 struct rtmsg *rtm;
2736
2737 switch (nlh->nlmsg_type) {
2738 case RTM_GETLINK:
2739 break;
2740 case RTM_NEWLINK:
2741 case RTM_DELLINK:
2742 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
2743 ifi = NLMSG_DATA(nlh);
2744 ifi->ifi_type = tswap16(ifi->ifi_type);
2745 ifi->ifi_index = tswap32(ifi->ifi_index);
2746 ifi->ifi_flags = tswap32(ifi->ifi_flags);
2747 ifi->ifi_change = tswap32(ifi->ifi_change);
2748 target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len -
2749 NLMSG_LENGTH(sizeof(*ifi)));
2750 }
2751 break;
2752 case RTM_GETADDR:
2753 case RTM_NEWADDR:
2754 case RTM_DELADDR:
2755 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
2756 ifa = NLMSG_DATA(nlh);
2757 ifa->ifa_index = tswap32(ifa->ifa_index);
2758 target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len -
2759 NLMSG_LENGTH(sizeof(*ifa)));
2760 }
2761 break;
2762 case RTM_GETROUTE:
2763 break;
2764 case RTM_NEWROUTE:
2765 case RTM_DELROUTE:
2766 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
2767 rtm = NLMSG_DATA(nlh);
2768 rtm->rtm_flags = tswap32(rtm->rtm_flags);
2769 target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len -
2770 NLMSG_LENGTH(sizeof(*rtm)));
2771 }
2772 break;
2773 default:
2774 return -TARGET_EOPNOTSUPP;
2775 }
2776 return 0;
2777 }
2778
2779 static abi_long target_to_host_nlmsg_route(struct nlmsghdr *nlh, size_t len)
2780 {
2781 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_route);
2782 }
2783 #endif /* CONFIG_RTNETLINK */
2784
2785 static abi_long host_to_target_data_audit(struct nlmsghdr *nlh)
2786 {
2787 switch (nlh->nlmsg_type) {
2788 default:
2789 gemu_log("Unknown host audit message type %d\n",
2790 nlh->nlmsg_type);
2791 return -TARGET_EINVAL;
2792 }
2793 return 0;
2794 }
2795
2796 static inline abi_long host_to_target_nlmsg_audit(struct nlmsghdr *nlh,
2797 size_t len)
2798 {
2799 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_audit);
2800 }
2801
2802 static abi_long target_to_host_data_audit(struct nlmsghdr *nlh)
2803 {
2804 switch (nlh->nlmsg_type) {
2805 case AUDIT_USER:
2806 case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
2807 case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2:
2808 break;
2809 default:
2810 gemu_log("Unknown target audit message type %d\n",
2811 nlh->nlmsg_type);
2812 return -TARGET_EINVAL;
2813 }
2814
2815 return 0;
2816 }
2817
2818 static abi_long target_to_host_nlmsg_audit(struct nlmsghdr *nlh, size_t len)
2819 {
2820 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_audit);
2821 }
2822
2823 /* do_setsockopt() Must return target values and target errnos. */
2824 static abi_long do_setsockopt(int sockfd, int level, int optname,
2825 abi_ulong optval_addr, socklen_t optlen)
2826 {
2827 abi_long ret;
2828 int val;
2829 struct ip_mreqn *ip_mreq;
2830 struct ip_mreq_source *ip_mreq_source;
2831
2832 switch(level) {
2833 case SOL_TCP:
2834 /* TCP options all take an 'int' value. */
2835 if (optlen < sizeof(uint32_t))
2836 return -TARGET_EINVAL;
2837
2838 if (get_user_u32(val, optval_addr))
2839 return -TARGET_EFAULT;
2840 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2841 break;
2842 case SOL_IP:
2843 switch(optname) {
2844 case IP_TOS:
2845 case IP_TTL:
2846 case IP_HDRINCL:
2847 case IP_ROUTER_ALERT:
2848 case IP_RECVOPTS:
2849 case IP_RETOPTS:
2850 case IP_PKTINFO:
2851 case IP_MTU_DISCOVER:
2852 case IP_RECVERR:
2853 case IP_RECVTTL:
2854 case IP_RECVTOS:
2855 #ifdef IP_FREEBIND
2856 case IP_FREEBIND:
2857 #endif
2858 case IP_MULTICAST_TTL:
2859 case IP_MULTICAST_LOOP:
2860 val = 0;
2861 if (optlen >= sizeof(uint32_t)) {
2862 if (get_user_u32(val, optval_addr))
2863 return -TARGET_EFAULT;
2864 } else if (optlen >= 1) {
2865 if (get_user_u8(val, optval_addr))
2866 return -TARGET_EFAULT;
2867 }
2868 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2869 break;
2870 case IP_ADD_MEMBERSHIP:
2871 case IP_DROP_MEMBERSHIP:
2872 if (optlen < sizeof (struct target_ip_mreq) ||
2873 optlen > sizeof (struct target_ip_mreqn))
2874 return -TARGET_EINVAL;
2875
2876 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2877 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2878 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2879 break;
2880
2881 case IP_BLOCK_SOURCE:
2882 case IP_UNBLOCK_SOURCE:
2883 case IP_ADD_SOURCE_MEMBERSHIP:
2884 case IP_DROP_SOURCE_MEMBERSHIP:
2885 if (optlen != sizeof (struct target_ip_mreq_source))
2886 return -TARGET_EINVAL;
2887
2888 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2889 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2890 unlock_user (ip_mreq_source, optval_addr, 0);
2891 break;
2892
2893 default:
2894 goto unimplemented;
2895 }
2896 break;
2897 case SOL_IPV6:
2898 switch (optname) {
2899 case IPV6_MTU_DISCOVER:
2900 case IPV6_MTU:
2901 case IPV6_V6ONLY:
2902 case IPV6_RECVPKTINFO:
2903 case IPV6_UNICAST_HOPS:
2904 case IPV6_RECVERR:
2905 case IPV6_RECVHOPLIMIT:
2906 case IPV6_2292HOPLIMIT:
2907 case IPV6_CHECKSUM:
2908 val = 0;
2909 if (optlen < sizeof(uint32_t)) {
2910 return -TARGET_EINVAL;
2911 }
2912 if (get_user_u32(val, optval_addr)) {
2913 return -TARGET_EFAULT;
2914 }
2915 ret = get_errno(setsockopt(sockfd, level, optname,
2916 &val, sizeof(val)));
2917 break;
2918 case IPV6_PKTINFO:
2919 {
2920 struct in6_pktinfo pki;
2921
2922 if (optlen < sizeof(pki)) {
2923 return -TARGET_EINVAL;
2924 }
2925
2926 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2927 return -TARGET_EFAULT;
2928 }
2929
2930 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2931
2932 ret = get_errno(setsockopt(sockfd, level, optname,
2933 &pki, sizeof(pki)));
2934 break;
2935 }
2936 default:
2937 goto unimplemented;
2938 }
2939 break;
2940 case SOL_ICMPV6:
2941 switch (optname) {
2942 case ICMPV6_FILTER:
2943 {
2944 struct icmp6_filter icmp6f;
2945
2946 if (optlen > sizeof(icmp6f)) {
2947 optlen = sizeof(icmp6f);
2948 }
2949
2950 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2951 return -TARGET_EFAULT;
2952 }
2953
2954 for (val = 0; val < 8; val++) {
2955 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2956 }
2957
2958 ret = get_errno(setsockopt(sockfd, level, optname,
2959 &icmp6f, optlen));
2960 break;
2961 }
2962 default:
2963 goto unimplemented;
2964 }
2965 break;
2966 case SOL_RAW:
2967 switch (optname) {
2968 case ICMP_FILTER:
2969 case IPV6_CHECKSUM:
2970 /* those take an u32 value */
2971 if (optlen < sizeof(uint32_t)) {
2972 return -TARGET_EINVAL;
2973 }
2974
2975 if (get_user_u32(val, optval_addr)) {
2976 return -TARGET_EFAULT;
2977 }
2978 ret = get_errno(setsockopt(sockfd, level, optname,
2979 &val, sizeof(val)));
2980 break;
2981
2982 default:
2983 goto unimplemented;
2984 }
2985 break;
2986 case TARGET_SOL_SOCKET:
2987 switch (optname) {
2988 case TARGET_SO_RCVTIMEO:
2989 {
2990 struct timeval tv;
2991
2992 optname = SO_RCVTIMEO;
2993
2994 set_timeout:
2995 if (optlen != sizeof(struct target_timeval)) {
2996 return -TARGET_EINVAL;
2997 }
2998
2999 if (copy_from_user_timeval(&tv, optval_addr)) {
3000 return -TARGET_EFAULT;
3001 }
3002
3003 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
3004 &tv, sizeof(tv)));
3005 return ret;
3006 }
3007 case TARGET_SO_SNDTIMEO:
3008 optname = SO_SNDTIMEO;
3009 goto set_timeout;
3010 case TARGET_SO_ATTACH_FILTER:
3011 {
3012 struct target_sock_fprog *tfprog;
3013 struct target_sock_filter *tfilter;
3014 struct sock_fprog fprog;
3015 struct sock_filter *filter;
3016 int i;
3017
3018 if (optlen != sizeof(*tfprog)) {
3019 return -TARGET_EINVAL;
3020 }
3021 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
3022 return -TARGET_EFAULT;
3023 }
3024 if (!lock_user_struct(VERIFY_READ, tfilter,
3025 tswapal(tfprog->filter), 0)) {
3026 unlock_user_struct(tfprog, optval_addr, 1);
3027 return -TARGET_EFAULT;
3028 }
3029
3030 fprog.len = tswap16(tfprog->len);
3031 filter = g_try_new(struct sock_filter, fprog.len);
3032 if (filter == NULL) {
3033 unlock_user_struct(tfilter, tfprog->filter, 1);
3034 unlock_user_struct(tfprog, optval_addr, 1);
3035 return -TARGET_ENOMEM;
3036 }
3037 for (i = 0; i < fprog.len; i++) {
3038 filter[i].code = tswap16(tfilter[i].code);
3039 filter[i].jt = tfilter[i].jt;
3040 filter[i].jf = tfilter[i].jf;
3041 filter[i].k = tswap32(tfilter[i].k);
3042 }
3043 fprog.filter = filter;
3044
3045 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
3046 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
3047 g_free(filter);
3048
3049 unlock_user_struct(tfilter, tfprog->filter, 1);
3050 unlock_user_struct(tfprog, optval_addr, 1);
3051 return ret;
3052 }
3053 case TARGET_SO_BINDTODEVICE:
3054 {
3055 char *dev_ifname, *addr_ifname;
3056
3057 if (optlen > IFNAMSIZ - 1) {
3058 optlen = IFNAMSIZ - 1;
3059 }
3060 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
3061 if (!dev_ifname) {
3062 return -TARGET_EFAULT;
3063 }
3064 optname = SO_BINDTODEVICE;
3065 addr_ifname = alloca(IFNAMSIZ);
3066 memcpy(addr_ifname, dev_ifname, optlen);
3067 addr_ifname[optlen] = 0;
3068 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
3069 addr_ifname, optlen));
3070 unlock_user (dev_ifname, optval_addr, 0);
3071 return ret;
3072 }
3073 /* Options with 'int' argument. */
3074 case TARGET_SO_DEBUG:
3075 optname = SO_DEBUG;
3076 break;
3077 case TARGET_SO_REUSEADDR:
3078 optname = SO_REUSEADDR;
3079 break;
3080 case TARGET_SO_TYPE:
3081 optname = SO_TYPE;
3082 break;
3083 case TARGET_SO_ERROR:
3084 optname = SO_ERROR;
3085 break;
3086 case TARGET_SO_DONTROUTE:
3087 optname = SO_DONTROUTE;
3088 break;
3089 case TARGET_SO_BROADCAST:
3090 optname = SO_BROADCAST;
3091 break;
3092 case TARGET_SO_SNDBUF:
3093 optname = SO_SNDBUF;
3094 break;
3095 case TARGET_SO_SNDBUFFORCE:
3096 optname = SO_SNDBUFFORCE;
3097 break;
3098 case TARGET_SO_RCVBUF:
3099 optname = SO_RCVBUF;
3100 break;
3101 case TARGET_SO_RCVBUFFORCE:
3102 optname = SO_RCVBUFFORCE;
3103 break;
3104 case TARGET_SO_KEEPALIVE:
3105 optname = SO_KEEPALIVE;
3106 break;
3107 case TARGET_SO_OOBINLINE:
3108 optname = SO_OOBINLINE;
3109 break;
3110 case TARGET_SO_NO_CHECK:
3111 optname = SO_NO_CHECK;
3112 break;
3113 case TARGET_SO_PRIORITY:
3114 optname = SO_PRIORITY;
3115 break;
3116 #ifdef SO_BSDCOMPAT
3117 case TARGET_SO_BSDCOMPAT:
3118 optname = SO_BSDCOMPAT;
3119 break;
3120 #endif
3121 case TARGET_SO_PASSCRED:
3122 optname = SO_PASSCRED;
3123 break;
3124 case TARGET_SO_PASSSEC:
3125 optname = SO_PASSSEC;
3126 break;
3127 case TARGET_SO_TIMESTAMP:
3128 optname = SO_TIMESTAMP;
3129 break;
3130 case TARGET_SO_RCVLOWAT:
3131 optname = SO_RCVLOWAT;
3132 break;
3133 break;
3134 default:
3135 goto unimplemented;
3136 }
3137 if (optlen < sizeof(uint32_t))
3138 return -TARGET_EINVAL;
3139
3140 if (get_user_u32(val, optval_addr))
3141 return -TARGET_EFAULT;
3142 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
3143 break;
3144 default:
3145 unimplemented:
3146 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname);
3147 ret = -TARGET_ENOPROTOOPT;
3148 }
3149 return ret;
3150 }
3151
3152 /* do_getsockopt() Must return target values and target errnos. */
3153 static abi_long do_getsockopt(int sockfd, int level, int optname,
3154 abi_ulong optval_addr, abi_ulong optlen)
3155 {
3156 abi_long ret;
3157 int len, val;
3158 socklen_t lv;
3159
3160 switch(level) {
3161 case TARGET_SOL_SOCKET:
3162 level = SOL_SOCKET;
3163 switch (optname) {
3164 /* These don't just return a single integer */
3165 case TARGET_SO_LINGER:
3166 case TARGET_SO_RCVTIMEO:
3167 case TARGET_SO_SNDTIMEO:
3168 case TARGET_SO_PEERNAME:
3169 goto unimplemented;
3170 case TARGET_SO_PEERCRED: {
3171 struct ucred cr;
3172 socklen_t crlen;
3173 struct target_ucred *tcr;
3174
3175 if (get_user_u32(len, optlen)) {
3176 return -TARGET_EFAULT;
3177 }
3178 if (len < 0) {
3179 return -TARGET_EINVAL;
3180 }
3181
3182 crlen = sizeof(cr);
3183 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
3184 &cr, &crlen));
3185 if (ret < 0) {
3186 return ret;
3187 }
3188 if (len > crlen) {
3189 len = crlen;
3190 }
3191 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
3192 return -TARGET_EFAULT;
3193 }
3194 __put_user(cr.pid, &tcr->pid);
3195 __put_user(cr.uid, &tcr->uid);
3196 __put_user(cr.gid, &tcr->gid);
3197 unlock_user_struct(tcr, optval_addr, 1);
3198 if (put_user_u32(len, optlen)) {
3199 return -TARGET_EFAULT;
3200 }
3201 break;
3202 }
3203 /* Options with 'int' argument. */
3204 case TARGET_SO_DEBUG:
3205 optname = SO_DEBUG;
3206 goto int_case;
3207 case TARGET_SO_REUSEADDR:
3208 optname = SO_REUSEADDR;
3209 goto int_case;
3210 case TARGET_SO_TYPE:
3211 optname = SO_TYPE;
3212 goto int_case;
3213 case TARGET_SO_ERROR:
3214 optname = SO_ERROR;
3215 goto int_case;
3216 case TARGET_SO_DONTROUTE:
3217 optname = SO_DONTROUTE;
3218 goto int_case;
3219 case TARGET_SO_BROADCAST:
3220 optname = SO_BROADCAST;
3221 goto int_case;
3222 case TARGET_SO_SNDBUF:
3223 optname = SO_SNDBUF;
3224 goto int_case;
3225 case TARGET_SO_RCVBUF:
3226 optname = SO_RCVBUF;
3227 goto int_case;
3228 case TARGET_SO_KEEPALIVE:
3229 optname = SO_KEEPALIVE;
3230 goto int_case;
3231 case TARGET_SO_OOBINLINE:
3232 optname = SO_OOBINLINE;
3233 goto int_case;
3234 case TARGET_SO_NO_CHECK:
3235 optname = SO_NO_CHECK;
3236 goto int_case;
3237 case TARGET_SO_PRIORITY:
3238 optname = SO_PRIORITY;
3239 goto int_case;
3240 #ifdef SO_BSDCOMPAT
3241 case TARGET_SO_BSDCOMPAT:
3242 optname = SO_BSDCOMPAT;
3243 goto int_case;
3244 #endif
3245 case TARGET_SO_PASSCRED:
3246 optname = SO_PASSCRED;
3247 goto int_case;
3248 case TARGET_SO_TIMESTAMP:
3249 optname = SO_TIMESTAMP;
3250 goto int_case;
3251 case TARGET_SO_RCVLOWAT:
3252 optname = SO_RCVLOWAT;
3253 goto int_case;
3254 case TARGET_SO_ACCEPTCONN:
3255 optname = SO_ACCEPTCONN;
3256 goto int_case;
3257 default:
3258 goto int_case;
3259 }
3260 break;
3261 case SOL_TCP:
3262 /* TCP options all take an 'int' value. */
3263 int_case:
3264 if (get_user_u32(len, optlen))
3265 return -TARGET_EFAULT;
3266 if (len < 0)
3267 return -TARGET_EINVAL;
3268 lv = sizeof(lv);
3269 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
3270 if (ret < 0)
3271 return ret;
3272 if (optname == SO_TYPE) {
3273 val = host_to_target_sock_type(val);
3274 }
3275 if (len > lv)
3276 len = lv;
3277 if (len == 4) {
3278 if (put_user_u32(val, optval_addr))
3279 return -TARGET_EFAULT;
3280 } else {
3281 if (put_user_u8(val, optval_addr))
3282 return -TARGET_EFAULT;
3283 }
3284 if (put_user_u32(len, optlen))
3285 return -TARGET_EFAULT;
3286 break;
3287 case SOL_IP:
3288 switch(optname) {
3289 case IP_TOS:
3290 case IP_TTL:
3291 case IP_HDRINCL:
3292 case IP_ROUTER_ALERT:
3293 case IP_RECVOPTS:
3294 case IP_RETOPTS:
3295 case IP_PKTINFO:
3296 case IP_MTU_DISCOVER:
3297 case IP_RECVERR:
3298 case IP_RECVTOS:
3299 #ifdef IP_FREEBIND
3300 case IP_FREEBIND:
3301 #endif
3302 case IP_MULTICAST_TTL:
3303 case IP_MULTICAST_LOOP:
3304 if (get_user_u32(len, optlen))
3305 return -TARGET_EFAULT;
3306 if (len < 0)
3307 return -TARGET_EINVAL;
3308 lv = sizeof(lv);
3309 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
3310 if (ret < 0)
3311 return ret;
3312 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
3313 len = 1;
3314 if (put_user_u32(len, optlen)
3315 || put_user_u8(val, optval_addr))
3316 return -TARGET_EFAULT;
3317 } else {
3318 if (len > sizeof(int))
3319 len = sizeof(int);
3320 if (put_user_u32(len, optlen)
3321 || put_user_u32(val, optval_addr))
3322 return -TARGET_EFAULT;
3323 }
3324 break;
3325 default:
3326 ret = -TARGET_ENOPROTOOPT;
3327 break;
3328 }
3329 break;
3330 default:
3331 unimplemented:
3332 gemu_log("getsockopt level=%d optname=%d not yet supported\n",
3333 level, optname);
3334 ret = -TARGET_EOPNOTSUPP;
3335 break;
3336 }
3337 return ret;
3338 }
3339
3340 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
3341 abi_ulong count, int copy)
3342 {
3343 struct target_iovec *target_vec;
3344 struct iovec *vec;
3345 abi_ulong total_len, max_len;
3346 int i;
3347 int err = 0;
3348 bool bad_address = false;
3349
3350 if (count == 0) {
3351 errno = 0;
3352 return NULL;
3353 }
3354 if (count > IOV_MAX) {
3355 errno = EINVAL;
3356 return NULL;
3357 }
3358
3359 vec = g_try_new0(struct iovec, count);
3360 if (vec == NULL) {
3361 errno = ENOMEM;
3362 return NULL;
3363 }
3364
3365 target_vec = lock_user(VERIFY_READ, target_addr,
3366 count * sizeof(struct target_iovec), 1);
3367 if (target_vec == NULL) {
3368 err = EFAULT;
3369 goto fail2;
3370 }
3371
3372 /* ??? If host page size > target page size, this will result in a
3373 value larger than what we can actually support. */
3374 max_len = 0x7fffffff & TARGET_PAGE_MASK;
3375 total_len = 0;
3376
3377 for (i = 0; i < count; i++) {
3378 abi_ulong base = tswapal(target_vec[i].iov_base);
3379 abi_long len = tswapal(target_vec[i].iov_len);
3380
3381 if (len < 0) {
3382 err = EINVAL;
3383 goto fail;
3384 } else if (len == 0) {
3385 /* Zero length pointer is ignored. */
3386 vec[i].iov_base = 0;
3387 } else {
3388 vec[i].iov_base = lock_user(type, base, len, copy);
3389 /* If the first buffer pointer is bad, this is a fault. But
3390 * subsequent bad buffers will result in a partial write; this
3391 * is realized by filling the vector with null pointers and
3392 * zero lengths. */
3393 if (!vec[i].iov_base) {
3394 if (i == 0) {
3395 err = EFAULT;
3396 goto fail;
3397 } else {
3398 bad_address = true;
3399 }
3400 }
3401 if (bad_address) {
3402 len = 0;
3403 }
3404 if (len > max_len - total_len) {
3405 len = max_len - total_len;
3406 }
3407 }
3408 vec[i].iov_len = len;
3409 total_len += len;
3410 }
3411
3412 unlock_user(target_vec, target_addr, 0);
3413 return vec;
3414
3415 fail:
3416 while (--i >= 0) {
3417 if (tswapal(target_vec[i].iov_len) > 0) {
3418 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3419 }
3420 }
3421 unlock_user(target_vec, target_addr, 0);
3422 fail2:
3423 g_free(vec);
3424 errno = err;
3425 return NULL;
3426 }
3427
3428 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3429 abi_ulong count, int copy)
3430 {
3431 struct target_iovec *target_vec;
3432 int i;
3433
3434 target_vec = lock_user(VERIFY_READ, target_addr,
3435 count * sizeof(struct target_iovec), 1);
3436 if (target_vec) {
3437 for (i = 0; i < count; i++) {
3438 abi_ulong base = tswapal(target_vec[i].iov_base);
3439 abi_long len = tswapal(target_vec[i].iov_len);
3440 if (len < 0) {
3441 break;
3442 }
3443 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3444 }
3445 unlock_user(target_vec, target_addr, 0);
3446 }
3447
3448 g_free(vec);
3449 }
3450
3451 static inline int target_to_host_sock_type(int *type)
3452 {
3453 int host_type = 0;
3454 int target_type = *type;
3455
3456 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3457 case TARGET_SOCK_DGRAM:
3458 host_type = SOCK_DGRAM;
3459 break;
3460 case TARGET_SOCK_STREAM:
3461 host_type = SOCK_STREAM;
3462 break;
3463 default:
3464 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3465 break;
3466 }
3467 if (target_type & TARGET_SOCK_CLOEXEC) {
3468 #if defined(SOCK_CLOEXEC)
3469 host_type |= SOCK_CLOEXEC;
3470 #else
3471 return -TARGET_EINVAL;
3472 #endif
3473 }
3474 if (target_type & TARGET_SOCK_NONBLOCK) {
3475 #if defined(SOCK_NONBLOCK)
3476 host_type |= SOCK_NONBLOCK;
3477 #elif !defined(O_NONBLOCK)
3478 return -TARGET_EINVAL;
3479 #endif
3480 }
3481 *type = host_type;
3482 return 0;
3483 }
3484
3485 /* Try to emulate socket type flags after socket creation. */
3486 static int sock_flags_fixup(int fd, int target_type)
3487 {
3488 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3489 if (target_type & TARGET_SOCK_NONBLOCK) {
3490 int flags = fcntl(fd, F_GETFL);
3491 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3492 close(fd);
3493 return -TARGET_EINVAL;
3494 }
3495 }
3496 #endif
3497 return fd;
3498 }
3499
3500 static abi_long packet_target_to_host_sockaddr(void *host_addr,
3501 abi_ulong target_addr,
3502 socklen_t len)
3503 {
3504 struct sockaddr *addr = host_addr;
3505 struct target_sockaddr *target_saddr;
3506
3507 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
3508 if (!target_saddr) {
3509 return -TARGET_EFAULT;
3510 }
3511
3512 memcpy(addr, target_saddr, len);
3513 addr->sa_family = tswap16(target_saddr->sa_family);
3514 /* spkt_protocol is big-endian */
3515
3516 unlock_user(target_saddr, target_addr, 0);
3517 return 0;
3518 }
3519
3520 static TargetFdTrans target_packet_trans = {
3521 .target_to_host_addr = packet_target_to_host_sockaddr,
3522 };
3523
3524 #ifdef CONFIG_RTNETLINK
3525 static abi_long netlink_route_target_to_host(void *buf, size_t len)
3526 {
3527 abi_long ret;
3528
3529 ret = target_to_host_nlmsg_route(buf, len);
3530 if (ret < 0) {
3531 return ret;
3532 }
3533
3534 return len;
3535 }
3536
3537 static abi_long netlink_route_host_to_target(void *buf, size_t len)
3538 {
3539 abi_long ret;
3540
3541 ret = host_to_target_nlmsg_route(buf, len);
3542 if (ret < 0) {
3543 return ret;
3544 }
3545
3546 return len;
3547 }
3548
3549 static TargetFdTrans target_netlink_route_trans = {
3550 .target_to_host_data = netlink_route_target_to_host,
3551 .host_to_target_data = netlink_route_host_to_target,
3552 };
3553 #endif /* CONFIG_RTNETLINK */
3554
3555 static abi_long netlink_audit_target_to_host(void *buf, size_t len)
3556 {
3557 abi_long ret;
3558
3559 ret = target_to_host_nlmsg_audit(buf, len);
3560 if (ret < 0) {
3561 return ret;
3562 }
3563
3564 return len;
3565 }
3566
3567 static abi_long netlink_audit_host_to_target(void *buf, size_t len)
3568 {
3569 abi_long ret;
3570
3571 ret = host_to_target_nlmsg_audit(buf, len);
3572 if (ret < 0) {
3573 return ret;
3574 }
3575
3576 return len;
3577 }
3578
3579 static TargetFdTrans target_netlink_audit_trans = {
3580 .target_to_host_data = netlink_audit_target_to_host,
3581 .host_to_target_data = netlink_audit_host_to_target,
3582 };
3583
3584 /* do_socket() Must return target values and target errnos. */
3585 static abi_long do_socket(int domain, int type, int protocol)
3586 {
3587 int target_type = type;
3588 int ret;
3589
3590 ret = target_to_host_sock_type(&type);
3591 if (ret) {
3592 return ret;
3593 }
3594
3595 if (domain == PF_NETLINK && !(
3596 #ifdef CONFIG_RTNETLINK
3597 protocol == NETLINK_ROUTE ||
3598 #endif
3599 protocol == NETLINK_KOBJECT_UEVENT ||
3600 protocol == NETLINK_AUDIT)) {
3601 return -EPFNOSUPPORT;
3602 }
3603
3604 if (domain == AF_PACKET ||
3605 (domain == AF_INET && type == SOCK_PACKET)) {
3606 protocol = tswap16(protocol);
3607 }
3608
3609 ret = get_errno(socket(domain, type, protocol));
3610 if (ret >= 0) {
3611 ret = sock_flags_fixup(ret, target_type);
3612 if (type == SOCK_PACKET) {
3613 /* Manage an obsolete case :
3614 * if socket type is SOCK_PACKET, bind by name
3615 */
3616 fd_trans_register(ret, &target_packet_trans);
3617 } else if (domain == PF_NETLINK) {
3618 switch (protocol) {
3619 #ifdef CONFIG_RTNETLINK
3620 case NETLINK_ROUTE:
3621 fd_trans_register(ret, &target_netlink_route_trans);
3622 break;
3623 #endif
3624 case NETLINK_KOBJECT_UEVENT:
3625 /* nothing to do: messages are strings */
3626 break;
3627 case NETLINK_AUDIT:
3628 fd_trans_register(ret, &target_netlink_audit_trans);
3629 break;
3630 default:
3631 g_assert_not_reached();
3632 }
3633 }
3634 }
3635 return ret;
3636 }
3637
3638 /* do_bind() Must return target values and target errnos. */
3639 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3640 socklen_t addrlen)
3641 {
3642 void *addr;
3643 abi_long ret;
3644
3645 if ((int)addrlen < 0) {
3646 return -TARGET_EINVAL;
3647 }
3648
3649 addr = alloca(addrlen+1);
3650
3651 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3652 if (ret)
3653 return ret;
3654
3655 return get_errno(bind(sockfd, addr, addrlen));
3656 }
3657
3658 /* do_connect() Must return target values and target errnos. */
3659 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3660 socklen_t addrlen)
3661 {
3662 void *addr;
3663 abi_long ret;
3664
3665 if ((int)addrlen < 0) {
3666 return -TARGET_EINVAL;
3667 }
3668
3669 addr = alloca(addrlen+1);
3670
3671 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3672 if (ret)
3673 return ret;
3674
3675 return get_errno(safe_connect(sockfd, addr, addrlen));
3676 }
3677
3678 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3679 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3680 int flags, int send)
3681 {
3682 abi_long ret, len;
3683 struct msghdr msg;
3684 abi_ulong count;
3685 struct iovec *vec;
3686 abi_ulong target_vec;
3687
3688 if (msgp->msg_name) {
3689 msg.msg_namelen = tswap32(msgp->msg_namelen);
3690 msg.msg_name = alloca(msg.msg_namelen+1);
3691 ret = target_to_host_sockaddr(fd, msg.msg_name,
3692 tswapal(msgp->msg_name),
3693 msg.msg_namelen);
3694 if (ret == -TARGET_EFAULT) {
3695 /* For connected sockets msg_name and msg_namelen must
3696 * be ignored, so returning EFAULT immediately is wrong.
3697 * Instead, pass a bad msg_name to the host kernel, and
3698 * let it decide whether to return EFAULT or not.
3699 */
3700 msg.msg_name = (void *)-1;
3701 } else if (ret) {
3702 goto out2;
3703 }
3704 } else {
3705 msg.msg_name = NULL;
3706 msg.msg_namelen = 0;
3707 }
3708 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3709 msg.msg_control = alloca(msg.msg_controllen);
3710 msg.msg_flags = tswap32(msgp->msg_flags);
3711
3712 count = tswapal(msgp->msg_iovlen);
3713 target_vec = tswapal(msgp->msg_iov);
3714
3715 if (count > IOV_MAX) {
3716 /* sendrcvmsg returns a different errno for this condition than
3717 * readv/writev, so we must catch it here before lock_iovec() does.
3718 */
3719 ret = -TARGET_EMSGSIZE;
3720 goto out2;
3721 }
3722
3723 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3724 target_vec, count, send);
3725 if (vec == NULL) {
3726 ret = -host_to_target_errno(errno);
3727 goto out2;
3728 }
3729 msg.msg_iovlen = count;
3730 msg.msg_iov = vec;
3731
3732 if (send) {
3733 if (fd_trans_target_to_host_data(fd)) {
3734 void *host_msg;
3735
3736 host_msg = g_malloc(msg.msg_iov->iov_len);
3737 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3738 ret = fd_trans_target_to_host_data(fd)(host_msg,
3739 msg.msg_iov->iov_len);
3740 if (ret >= 0) {
3741 msg.msg_iov->iov_base = host_msg;
3742 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3743 }
3744 g_free(host_msg);
3745 } else {
3746 ret = target_to_host_cmsg(&msg, msgp);
3747 if (ret == 0) {
3748 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3749 }
3750 }
3751 } else {
3752 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3753 if (!is_error(ret)) {
3754 len = ret;
3755 if (fd_trans_host_to_target_data(fd)) {
3756 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3757 len);
3758 } else {
3759 ret = host_to_target_cmsg(msgp, &msg);
3760 }
3761 if (!is_error(ret)) {
3762 msgp->msg_namelen = tswap32(msg.msg_namelen);
3763 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3764 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3765 msg.msg_name, msg.msg_namelen);
3766 if (ret) {
3767 goto out;
3768 }
3769 }
3770
3771 ret = len;
3772 }
3773 }
3774 }
3775
3776 out:
3777 unlock_iovec(vec, target_vec, count, !send);
3778 out2:
3779 return ret;
3780 }
3781
3782 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3783 int flags, int send)
3784 {
3785 abi_long ret;
3786 struct target_msghdr *msgp;
3787
3788 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3789 msgp,
3790 target_msg,
3791 send ? 1 : 0)) {
3792 return -TARGET_EFAULT;
3793 }
3794 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3795 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3796 return ret;
3797 }
3798
3799 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3800 * so it might not have this *mmsg-specific flag either.
3801 */
3802 #ifndef MSG_WAITFORONE
3803 #define MSG_WAITFORONE 0x10000
3804 #endif
3805
3806 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3807 unsigned int vlen, unsigned int flags,
3808 int send)
3809 {
3810 struct target_mmsghdr *mmsgp;
3811 abi_long ret = 0;
3812 int i;
3813
3814 if (vlen > UIO_MAXIOV) {
3815 vlen = UIO_MAXIOV;
3816 }
3817
3818 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3819 if (!mmsgp) {
3820 return -TARGET_EFAULT;
3821 }
3822
3823 for (i = 0; i < vlen; i++) {
3824 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3825 if (is_error(ret)) {
3826 break;
3827 }
3828 mmsgp[i].msg_len = tswap32(ret);
3829 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3830 if (flags & MSG_WAITFORONE) {
3831 flags |= MSG_DONTWAIT;
3832 }
3833 }
3834
3835 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3836
3837 /* Return number of datagrams sent if we sent any at all;
3838 * otherwise return the error.
3839 */
3840 if (i) {
3841 return i;
3842 }
3843 return ret;
3844 }
3845
3846 /* do_accept4() Must return target values and target errnos. */
3847 static abi_long do_accept4(int fd, abi_ulong target_addr,
3848 abi_ulong target_addrlen_addr, int flags)
3849 {
3850 socklen_t addrlen;
3851 void *addr;
3852 abi_long ret;
3853 int host_flags;
3854
3855 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3856
3857 if (target_addr == 0) {
3858 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3859 }
3860
3861 /* linux returns EINVAL if addrlen pointer is invalid */
3862 if (get_user_u32(addrlen, target_addrlen_addr))
3863 return -TARGET_EINVAL;
3864
3865 if ((int)addrlen < 0) {
3866 return -TARGET_EINVAL;
3867 }
3868
3869 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3870 return -TARGET_EINVAL;
3871
3872 addr = alloca(addrlen);
3873
3874 ret = get_errno(safe_accept4(fd, addr, &addrlen, host_flags));
3875 if (!is_error(ret)) {
3876 host_to_target_sockaddr(target_addr, addr, addrlen);
3877 if (put_user_u32(addrlen, target_addrlen_addr))
3878 ret = -TARGET_EFAULT;
3879 }
3880 return ret;
3881 }
3882
3883 /* do_getpeername() Must return target values and target errnos. */
3884 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3885 abi_ulong target_addrlen_addr)
3886 {
3887 socklen_t addrlen;
3888 void *addr;
3889 abi_long ret;
3890
3891 if (get_user_u32(addrlen, target_addrlen_addr))
3892 return -TARGET_EFAULT;
3893
3894 if ((int)addrlen < 0) {
3895 return -TARGET_EINVAL;
3896 }
3897
3898 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3899 return -TARGET_EFAULT;
3900
3901 addr = alloca(addrlen);
3902
3903 ret = get_errno(getpeername(fd, addr, &addrlen));
3904 if (!is_error(ret)) {
3905 host_to_target_sockaddr(target_addr, addr, addrlen);
3906 if (put_user_u32(addrlen, target_addrlen_addr))
3907 ret = -TARGET_EFAULT;
3908 }
3909 return ret;
3910 }
3911
3912 /* do_getsockname() Must return target values and target errnos. */
3913 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3914 abi_ulong target_addrlen_addr)
3915 {
3916 socklen_t addrlen;
3917 void *addr;
3918 abi_long ret;
3919
3920 if (get_user_u32(addrlen, target_addrlen_addr))
3921 return -TARGET_EFAULT;
3922
3923 if ((int)addrlen < 0) {
3924 return -TARGET_EINVAL;
3925 }
3926
3927 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3928 return -TARGET_EFAULT;
3929
3930 addr = alloca(addrlen);
3931
3932 ret = get_errno(getsockname(fd, addr, &addrlen));
3933 if (!is_error(ret)) {
3934 host_to_target_sockaddr(target_addr, addr, addrlen);
3935 if (put_user_u32(addrlen, target_addrlen_addr))
3936 ret = -TARGET_EFAULT;
3937 }
3938 return ret;
3939 }
3940
3941 /* do_socketpair() Must return target values and target errnos. */
3942 static abi_long do_socketpair(int domain, int type, int protocol,
3943 abi_ulong target_tab_addr)
3944 {
3945 int tab[2];
3946 abi_long ret;
3947
3948 target_to_host_sock_type(&type);
3949
3950 ret = get_errno(socketpair(domain, type, protocol, tab));
3951 if (!is_error(ret)) {
3952 if (put_user_s32(tab[0], target_tab_addr)
3953 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3954 ret = -TARGET_EFAULT;
3955 }
3956 return ret;
3957 }
3958
3959 /* do_sendto() Must return target values and target errnos. */
3960 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3961 abi_ulong target_addr, socklen_t addrlen)
3962 {
3963 void *addr;
3964 void *host_msg;
3965 void *copy_msg = NULL;
3966 abi_long ret;
3967
3968 if ((int)addrlen < 0) {
3969 return -TARGET_EINVAL;
3970 }
3971
3972 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3973 if (!host_msg)
3974 return -TARGET_EFAULT;
3975 if (fd_trans_target_to_host_data(fd)) {
3976 copy_msg = host_msg;
3977 host_msg = g_malloc(len);
3978 memcpy(host_msg, copy_msg, len);
3979 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3980 if (ret < 0) {
3981 goto fail;
3982 }
3983 }
3984 if (target_addr) {
3985 addr = alloca(addrlen+1);
3986 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3987 if (ret) {
3988 goto fail;
3989 }
3990 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3991 } else {
3992 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3993 }
3994 fail:
3995 if (copy_msg) {
3996 g_free(host_msg);
3997 host_msg = copy_msg;
3998 }
3999 unlock_user(host_msg, msg, 0);
4000 return ret;
4001 }
4002
4003 /* do_recvfrom() Must return target values and target errnos. */
4004 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
4005 abi_ulong target_addr,
4006 abi_ulong target_addrlen)
4007 {
4008 socklen_t addrlen;
4009 void *addr;
4010 void *host_msg;
4011 abi_long ret;
4012
4013 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
4014 if (!host_msg)
4015 return -TARGET_EFAULT;
4016 if (target_addr) {
4017 if (get_user_u32(addrlen, target_addrlen)) {
4018 ret = -TARGET_EFAULT;
4019 goto fail;
4020 }
4021 if ((int)addrlen < 0) {
4022 ret = -TARGET_EINVAL;
4023 goto fail;
4024 }
4025 addr = alloca(addrlen);
4026 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
4027 addr, &addrlen));
4028 } else {
4029 addr = NULL; /* To keep compiler quiet. */
4030 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
4031 }
4032 if (!is_error(ret)) {
4033 if (fd_trans_host_to_target_data(fd)) {
4034 ret = fd_trans_host_to_target_data(fd)(host_msg, ret);
4035 }
4036 if (target_addr) {
4037 host_to_target_sockaddr(target_addr, addr, addrlen);
4038 if (put_user_u32(addrlen, target_addrlen)) {
4039 ret = -TARGET_EFAULT;
4040 goto fail;
4041 }
4042 }
4043 unlock_user(host_msg, msg, len);
4044 } else {
4045 fail:
4046 unlock_user(host_msg, msg, 0);
4047 }
4048 return ret;
4049 }
4050
4051 #ifdef TARGET_NR_socketcall
4052 /* do_socketcall() must return target values and target errnos. */
4053 static abi_long do_socketcall(int num, abi_ulong vptr)
4054 {
4055 static const unsigned nargs[] = { /* number of arguments per operation */
4056 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
4057 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
4058 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
4059 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
4060 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
4061 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
4062 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
4063 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
4064 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
4065 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
4066 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
4067 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
4068 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
4069 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
4070 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
4071 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
4072 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
4073 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
4074 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
4075 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
4076 };
4077 abi_long a[6]; /* max 6 args */
4078 unsigned i;
4079
4080 /* check the range of the first argument num */
4081 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
4082 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
4083 return -TARGET_EINVAL;
4084 }
4085 /* ensure we have space for args */
4086 if (nargs[num] > ARRAY_SIZE(a)) {
4087 return -TARGET_EINVAL;
4088 }
4089 /* collect the arguments in a[] according to nargs[] */
4090 for (i = 0; i < nargs[num]; ++i) {
4091 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
4092 return -TARGET_EFAULT;
4093 }
4094 }
4095 /* now when we have the args, invoke the appropriate underlying function */
4096 switch (num) {
4097 case TARGET_SYS_SOCKET: /* domain, type, protocol */
4098 return do_socket(a[0], a[1], a[2]);
4099 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
4100 return do_bind(a[0], a[1], a[2]);
4101 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
4102 return do_connect(a[0], a[1], a[2]);
4103 case TARGET_SYS_LISTEN: /* sockfd, backlog */
4104 return get_errno(listen(a[0], a[1]));
4105 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
4106 return do_accept4(a[0], a[1], a[2], 0);
4107 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
4108 return do_getsockname(a[0], a[1], a[2]);
4109 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
4110 return do_getpeername(a[0], a[1], a[2]);
4111 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
4112 return do_socketpair(a[0], a[1], a[2], a[3]);
4113 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
4114 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
4115 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
4116 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
4117 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
4118 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
4119 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
4120 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
4121 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
4122 return get_errno(shutdown(a[0], a[1]));
4123 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
4124 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
4125 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
4126 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
4127 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
4128 return do_sendrecvmsg(a[0], a[1], a[2], 1);
4129 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
4130 return do_sendrecvmsg(a[0], a[1], a[2], 0);
4131 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
4132 return do_accept4(a[0], a[1], a[2], a[3]);
4133 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
4134 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
4135 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
4136 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
4137 default:
4138 gemu_log("Unsupported socketcall: %d\n", num);
4139 return -TARGET_EINVAL;
4140 }
4141 }
4142 #endif
4143
4144 #define N_SHM_REGIONS 32
4145
4146 static struct shm_region {
4147 abi_ulong start;
4148 abi_ulong size;
4149 bool in_use;
4150 } shm_regions[N_SHM_REGIONS];
4151
4152 #ifndef TARGET_SEMID64_DS
4153 /* asm-generic version of this struct */
4154 struct target_semid64_ds
4155 {
4156 struct target_ipc_perm sem_perm;
4157 abi_ulong sem_otime;
4158 #if TARGET_ABI_BITS == 32
4159 abi_ulong __unused1;
4160 #endif
4161 abi_ulong sem_ctime;
4162 #if TARGET_ABI_BITS == 32
4163 abi_ulong __unused2;
4164 #endif
4165 abi_ulong sem_nsems;
4166 abi_ulong __unused3;
4167 abi_ulong __unused4;
4168 };
4169 #endif
4170
4171 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
4172 abi_ulong target_addr)
4173 {
4174 struct target_ipc_perm *target_ip;
4175 struct target_semid64_ds *target_sd;
4176
4177 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4178 return -TARGET_EFAULT;
4179 target_ip = &(target_sd->sem_perm);
4180 host_ip->__key = tswap32(target_ip->__key);
4181 host_ip->uid = tswap32(target_ip->uid);
4182 host_ip->gid = tswap32(target_ip->gid);
4183 host_ip->cuid = tswap32(target_ip->cuid);
4184 host_ip->cgid = tswap32(target_ip->cgid);
4185 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
4186 host_ip->mode = tswap32(target_ip->mode);
4187 #else
4188 host_ip->mode = tswap16(target_ip->mode);
4189 #endif
4190 #if defined(TARGET_PPC)
4191 host_ip->__seq = tswap32(target_ip->__seq);
4192 #else
4193 host_ip->__seq = tswap16(target_ip->__seq);
4194 #endif
4195 unlock_user_struct(target_sd, target_addr, 0);
4196 return 0;
4197 }
4198
4199 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
4200 struct ipc_perm *host_ip)
4201 {
4202 struct target_ipc_perm *target_ip;
4203 struct target_semid64_ds *target_sd;
4204
4205 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4206 return -TARGET_EFAULT;
4207 target_ip = &(target_sd->sem_perm);
4208 target_ip->__key = tswap32(host_ip->__key);
4209 target_ip->uid = tswap32(host_ip->uid);
4210 target_ip->gid = tswap32(host_ip->gid);
4211 target_ip->cuid = tswap32(host_ip->cuid);
4212 target_ip->cgid = tswap32(host_ip->cgid);
4213 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
4214 target_ip->mode = tswap32(host_ip->mode);
4215 #else
4216 target_ip->mode = tswap16(host_ip->mode);
4217 #endif
4218 #if defined(TARGET_PPC)
4219 target_ip->__seq = tswap32(host_ip->__seq);
4220 #else
4221 target_ip->__seq = tswap16(host_ip->__seq);
4222 #endif
4223 unlock_user_struct(target_sd, target_addr, 1);
4224 return 0;
4225 }
4226
4227 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
4228 abi_ulong target_addr)
4229 {
4230 struct target_semid64_ds *target_sd;
4231
4232 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4233 return -TARGET_EFAULT;
4234 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
4235 return -TARGET_EFAULT;
4236 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
4237 host_sd->sem_otime = tswapal(target_sd->sem_otime);
4238 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
4239 unlock_user_struct(target_sd, target_addr, 0);
4240 return 0;
4241 }
4242
4243 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
4244 struct semid_ds *host_sd)
4245 {
4246 struct target_semid64_ds *target_sd;
4247
4248 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4249 return -TARGET_EFAULT;
4250 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
4251 return -TARGET_EFAULT;
4252 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
4253 target_sd->sem_otime = tswapal(host_sd->sem_otime);
4254 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
4255 unlock_user_struct(target_sd, target_addr, 1);
4256 return 0;
4257 }
4258
4259 struct target_seminfo {
4260 int semmap;
4261 int semmni;
4262 int semmns;
4263 int semmnu;
4264 int semmsl;
4265 int semopm;
4266 int semume;
4267 int semusz;
4268 int semvmx;
4269 int semaem;
4270 };
4271
4272 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
4273 struct seminfo *host_seminfo)
4274 {
4275 struct target_seminfo *target_seminfo;
4276 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
4277 return -TARGET_EFAULT;
4278 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
4279 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
4280 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
4281 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
4282 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
4283 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
4284 __put_user(host_seminfo->semume, &target_seminfo->semume);
4285 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
4286 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
4287 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
4288 unlock_user_struct(target_seminfo, target_addr, 1);
4289 return 0;
4290 }
4291
4292 union semun {
4293 int val;
4294 struct semid_ds *buf;
4295 unsigned short *array;
4296 struct seminfo *__buf;
4297 };
4298
4299 union target_semun {
4300 int val;
4301 abi_ulong buf;
4302 abi_ulong array;
4303 abi_ulong __buf;
4304 };
4305
4306 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
4307 abi_ulong target_addr)
4308 {
4309 int nsems;
4310 unsigned short *array;
4311 union semun semun;
4312 struct semid_ds semid_ds;
4313 int i, ret;
4314
4315 semun.buf = &semid_ds;
4316
4317 ret = semctl(semid, 0, IPC_STAT, semun);
4318 if (ret == -1)
4319 return get_errno(ret);
4320
4321 nsems = semid_ds.sem_nsems;
4322
4323 *host_array = g_try_new(unsigned short, nsems);
4324 if (!*host_array) {
4325 return -TARGET_ENOMEM;
4326 }
4327 array = lock_user(VERIFY_READ, target_addr,
4328 nsems*sizeof(unsigned short), 1);
4329 if (!array) {
4330 g_free(*host_array);
4331 return -TARGET_EFAULT;
4332 }
4333
4334 for(i=0; i<nsems; i++) {
4335 __get_user((*host_array)[i], &array[i]);
4336 }
4337 unlock_user(array, target_addr, 0);
4338
4339 return 0;
4340 }
4341
4342 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
4343 unsigned short **host_array)
4344 {
4345 int nsems;
4346 unsigned short *array;
4347 union semun semun;
4348 struct semid_ds semid_ds;
4349 int i, ret;
4350
4351 semun.buf = &semid_ds;
4352
4353 ret = semctl(semid, 0, IPC_STAT, semun);
4354 if (ret == -1)
4355 return get_errno(ret);
4356
4357 nsems = semid_ds.sem_nsems;
4358
4359 array = lock_user(VERIFY_WRITE, target_addr,
4360 nsems*sizeof(unsigned short), 0);
4361 if (!array)
4362 return -TARGET_EFAULT;
4363
4364 for(i=0; i<nsems; i++) {
4365 __put_user((*host_array)[i], &array[i]);
4366 }
4367 g_free(*host_array);
4368 unlock_user(array, target_addr, 1);
4369
4370 return 0;
4371 }
4372
4373 static inline abi_long do_semctl(int semid, int semnum, int cmd,
4374 abi_ulong target_arg)
4375 {
4376 union target_semun target_su = { .buf = target_arg };
4377 union semun arg;
4378 struct semid_ds dsarg;
4379 unsigned short *array = NULL;
4380 struct seminfo seminfo;
4381 abi_long ret = -TARGET_EINVAL;
4382 abi_long err;
4383 cmd &= 0xff;
4384
4385 switch( cmd ) {
4386 case GETVAL:
4387 case SETVAL:
4388 /* In 64 bit cross-endian situations, we will erroneously pick up
4389 * the wrong half of the union for the "val" element. To rectify
4390 * this, the entire 8-byte structure is byteswapped, followed by
4391 * a swap of the 4 byte val field. In other cases, the data is
4392 * already in proper host byte order. */
4393 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
4394 target_su.buf = tswapal(target_su.buf);
4395 arg.val = tswap32(target_su.val);
4396 } else {
4397 arg.val = target_su.val;
4398 }
4399 ret = get_errno(semctl(semid, semnum, cmd, arg));
4400 break;
4401 case GETALL:
4402 case SETALL:
4403 err = target_to_host_semarray(semid, &array, target_su.array);
4404 if (err)
4405 return err;
4406 arg.array = array;
4407 ret = get_errno(semctl(semid, semnum, cmd, arg));
4408 err = host_to_target_semarray(semid, target_su.array, &array);
4409 if (err)
4410 return err;
4411 break;
4412 case IPC_STAT:
4413 case IPC_SET:
4414 case SEM_STAT:
4415 err = target_to_host_semid_ds(&dsarg, target_su.buf);
4416 if (err)
4417 return err;
4418 arg.buf = &dsarg;
4419 ret = get_errno(semctl(semid, semnum, cmd, arg));
4420 err = host_to_target_semid_ds(target_su.buf, &dsarg);
4421 if (err)
4422 return err;
4423 break;
4424 case IPC_INFO:
4425 case SEM_INFO:
4426 arg.__buf = &seminfo;
4427 ret = get_errno(semctl(semid, semnum, cmd, arg));
4428 err = host_to_target_seminfo(target_su.__buf, &seminfo);
4429 if (err)
4430 return err;
4431 break;
4432 case IPC_RMID:
4433 case GETPID:
4434 case GETNCNT:
4435 case GETZCNT:
4436 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4437 break;
4438 }
4439
4440 return ret;
4441 }
4442
4443 struct target_sembuf {
4444 unsigned short sem_num;
4445 short sem_op;
4446 short sem_flg;
4447 };
4448
4449 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4450 abi_ulong target_addr,
4451 unsigned nsops)
4452 {
4453 struct target_sembuf *target_sembuf;
4454 int i;
4455
4456 target_sembuf = lock_user(VERIFY_READ, target_addr,
4457 nsops*sizeof(struct target_sembuf), 1);
4458 if (!target_sembuf)
4459 return -TARGET_EFAULT;
4460
4461 for(i=0; i<nsops; i++) {
4462 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4463 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4464 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4465 }
4466
4467 unlock_user(target_sembuf, target_addr, 0);
4468
4469 return 0;
4470 }
4471
4472 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
4473 {
4474 struct sembuf sops[nsops];
4475
4476 if (target_to_host_sembuf(sops, ptr, nsops))
4477 return -TARGET_EFAULT;
4478
4479 return get_errno(safe_semtimedop(semid, sops, nsops, NULL));
4480 }
4481
4482 struct target_msqid_ds
4483 {
4484 struct target_ipc_perm msg_perm;
4485 abi_ulong msg_stime;
4486 #if TARGET_ABI_BITS == 32
4487 abi_ulong __unused1;
4488 #endif
4489 abi_ulong msg_rtime;
4490 #if TARGET_ABI_BITS == 32
4491 abi_ulong __unused2;
4492 #endif
4493 abi_ulong msg_ctime;
4494 #if TARGET_ABI_BITS == 32
4495 abi_ulong __unused3;
4496 #endif
4497 abi_ulong __msg_cbytes;
4498 abi_ulong msg_qnum;
4499 abi_ulong msg_qbytes;
4500 abi_ulong msg_lspid;
4501 abi_ulong msg_lrpid;
4502 abi_ulong __unused4;
4503 abi_ulong __unused5;
4504 };
4505
4506 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4507 abi_ulong target_addr)
4508 {
4509 struct target_msqid_ds *target_md;
4510
4511 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4512 return -TARGET_EFAULT;
4513 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4514 return -TARGET_EFAULT;
4515 host_md->msg_stime = tswapal(target_md->msg_stime);
4516 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4517 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4518 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4519 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4520 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4521 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4522 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4523 unlock_user_struct(target_md, target_addr, 0);
4524 return 0;
4525 }
4526
4527 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4528 struct msqid_ds *host_md)
4529 {
4530 struct target_msqid_ds *target_md;
4531
4532 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4533 return -TARGET_EFAULT;
4534 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4535 return -TARGET_EFAULT;
4536 target_md->msg_stime = tswapal(host_md->msg_stime);
4537 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4538 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4539 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4540 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4541 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4542 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4543 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4544 unlock_user_struct(target_md, target_addr, 1);
4545 return 0;
4546 }
4547
4548 struct target_msginfo {
4549 int msgpool;
4550 int msgmap;
4551 int msgmax;
4552 int msgmnb;
4553 int msgmni;
4554 int msgssz;
4555 int msgtql;
4556 unsigned short int msgseg;
4557 };
4558
4559 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4560 struct msginfo *host_msginfo)
4561 {
4562 struct target_msginfo *target_msginfo;
4563 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4564 return -TARGET_EFAULT;
4565 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4566 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4567 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4568 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4569 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4570 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4571 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4572 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4573 unlock_user_struct(target_msginfo, target_addr, 1);
4574 return 0;
4575 }
4576
4577 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4578 {
4579 struct msqid_ds dsarg;
4580 struct msginfo msginfo;
4581 abi_long ret = -TARGET_EINVAL;
4582
4583 cmd &= 0xff;
4584
4585 switch (cmd) {
4586 case IPC_STAT:
4587 case IPC_SET:
4588 case MSG_STAT:
4589 if (target_to_host_msqid_ds(&dsarg,ptr))
4590 return -TARGET_EFAULT;
4591 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4592 if (host_to_target_msqid_ds(ptr,&dsarg))
4593 return -TARGET_EFAULT;
4594 break;
4595 case IPC_RMID:
4596 ret = get_errno(msgctl(msgid, cmd, NULL));
4597 break;
4598 case IPC_INFO:
4599 case MSG_INFO:
4600 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4601 if (host_to_target_msginfo(ptr, &msginfo))
4602 return -TARGET_EFAULT;
4603 break;
4604 }
4605
4606 return ret;
4607 }
4608
4609 struct target_msgbuf {
4610 abi_long mtype;
4611 char mtext[1];
4612 };
4613
4614 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4615 ssize_t msgsz, int msgflg)
4616 {
4617 struct target_msgbuf *target_mb;
4618 struct msgbuf *host_mb;
4619 abi_long ret = 0;
4620
4621 if (msgsz < 0) {
4622 return -TARGET_EINVAL;
4623 }
4624
4625 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4626 return -TARGET_EFAULT;
4627 host_mb = g_try_malloc(msgsz + sizeof(long));
4628 if (!host_mb) {
4629 unlock_user_struct(target_mb, msgp, 0);
4630 return -TARGET_ENOMEM;
4631 }
4632 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4633 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4634 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4635 g_free(host_mb);
4636 unlock_user_struct(target_mb, msgp, 0);
4637
4638 return ret;
4639 }
4640
4641 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4642 ssize_t msgsz, abi_long msgtyp,
4643 int msgflg)
4644 {
4645 struct target_msgbuf *target_mb;
4646 char *target_mtext;
4647 struct msgbuf *host_mb;
4648 abi_long ret = 0;
4649
4650 if (msgsz < 0) {
4651 return -TARGET_EINVAL;
4652 }
4653
4654 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4655 return -TARGET_EFAULT;
4656
4657 host_mb = g_try_malloc(msgsz + sizeof(long));
4658 if (!host_mb) {
4659 ret = -TARGET_ENOMEM;
4660 goto end;
4661 }
4662 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4663
4664 if (ret > 0) {
4665 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4666 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4667 if (!target_mtext) {
4668 ret = -TARGET_EFAULT;
4669 goto end;
4670 }
4671 memcpy(target_mb->mtext, host_mb->mtext, ret);
4672 unlock_user(target_mtext, target_mtext_addr, ret);
4673 }
4674
4675 target_mb->mtype = tswapal(host_mb->mtype);
4676
4677 end:
4678 if (target_mb)
4679 unlock_user_struct(target_mb, msgp, 1);
4680 g_free(host_mb);
4681 return ret;
4682 }
4683
4684 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4685 abi_ulong target_addr)
4686 {
4687 struct target_shmid_ds *target_sd;
4688
4689 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4690 return -TARGET_EFAULT;
4691 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4692 return -TARGET_EFAULT;
4693 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4694 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4695 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4696 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4697 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4698 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4699 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4700 unlock_user_struct(target_sd, target_addr, 0);
4701 return 0;
4702 }
4703
4704 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4705 struct shmid_ds *host_sd)
4706 {
4707 struct target_shmid_ds *target_sd;
4708
4709 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4710 return -TARGET_EFAULT;
4711 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4712 return -TARGET_EFAULT;
4713 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4714 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4715 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4716 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4717 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4718 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4719 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4720 unlock_user_struct(target_sd, target_addr, 1);
4721 return 0;
4722 }
4723
4724 struct target_shminfo {
4725 abi_ulong shmmax;
4726 abi_ulong shmmin;
4727 abi_ulong shmmni;
4728 abi_ulong shmseg;
4729 abi_ulong shmall;
4730 };
4731
4732 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4733 struct shminfo *host_shminfo)
4734 {
4735 struct target_shminfo *target_shminfo;
4736 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4737 return -TARGET_EFAULT;
4738 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4739 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4740 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4741 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4742 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4743 unlock_user_struct(target_shminfo, target_addr, 1);
4744 return 0;
4745 }
4746
4747 struct target_shm_info {
4748 int used_ids;
4749 abi_ulong shm_tot;
4750 abi_ulong shm_rss;
4751 abi_ulong shm_swp;
4752 abi_ulong swap_attempts;
4753 abi_ulong swap_successes;
4754 };
4755
4756 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4757 struct shm_info *host_shm_info)
4758 {
4759 struct target_shm_info *target_shm_info;
4760 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4761 return -TARGET_EFAULT;
4762 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4763 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4764 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4765 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4766 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4767 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4768 unlock_user_struct(target_shm_info, target_addr, 1);
4769 return 0;
4770 }
4771
4772 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4773 {
4774 struct shmid_ds dsarg;
4775 struct shminfo shminfo;
4776 struct shm_info shm_info;
4777 abi_long ret = -TARGET_EINVAL;
4778
4779 cmd &= 0xff;
4780
4781 switch(cmd) {
4782 case IPC_STAT:
4783 case IPC_SET:
4784 case SHM_STAT:
4785 if (target_to_host_shmid_ds(&dsarg, buf))
4786 return -TARGET_EFAULT;
4787 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4788 if (host_to_target_shmid_ds(buf, &dsarg))
4789 return -TARGET_EFAULT;
4790 break;
4791 case IPC_INFO:
4792 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4793 if (host_to_target_shminfo(buf, &shminfo))
4794 return -TARGET_EFAULT;
4795 break;
4796 case SHM_INFO:
4797 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4798 if (host_to_target_shm_info(buf, &shm_info))
4799 return -TARGET_EFAULT;
4800 break;
4801 case IPC_RMID:
4802 case SHM_LOCK:
4803 case SHM_UNLOCK:
4804 ret = get_errno(shmctl(shmid, cmd, NULL));
4805 break;
4806 }
4807
4808 return ret;
4809 }
4810
4811 #ifndef TARGET_FORCE_SHMLBA
4812 /* For most architectures, SHMLBA is the same as the page size;
4813 * some architectures have larger values, in which case they should
4814 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4815 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4816 * and defining its own value for SHMLBA.
4817 *
4818 * The kernel also permits SHMLBA to be set by the architecture to a
4819 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4820 * this means that addresses are rounded to the large size if
4821 * SHM_RND is set but addresses not aligned to that size are not rejected
4822 * as long as they are at least page-aligned. Since the only architecture
4823 * which uses this is ia64 this code doesn't provide for that oddity.
4824 */
4825 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4826 {
4827 return TARGET_PAGE_SIZE;
4828 }
4829 #endif
4830
4831 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4832 int shmid, abi_ulong shmaddr, int shmflg)
4833 {
4834 abi_long raddr;
4835 void *host_raddr;
4836 struct shmid_ds shm_info;
4837 int i,ret;
4838 abi_ulong shmlba;
4839
4840 /* find out the length of the shared memory segment */
4841 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4842 if (is_error(ret)) {
4843 /* can't get length, bail out */
4844 return ret;
4845 }
4846
4847 shmlba = target_shmlba(cpu_env);
4848
4849 if (shmaddr & (shmlba - 1)) {
4850 if (shmflg & SHM_RND) {
4851 shmaddr &= ~(shmlba - 1);
4852 } else {
4853 return -TARGET_EINVAL;
4854 }
4855 }
4856
4857 mmap_lock();
4858
4859 if (shmaddr)
4860 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
4861 else {
4862 abi_ulong mmap_start;
4863
4864 mmap_start = mmap_find_vma(0, shm_info.shm_segsz);
4865
4866 if (mmap_start == -1) {
4867 errno = ENOMEM;
4868 host_raddr = (void *)-1;
4869 } else
4870 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
4871 }
4872
4873 if (host_raddr == (void *)-1) {
4874 mmap_unlock();
4875 return get_errno((long)host_raddr);
4876 }
4877 raddr=h2g((unsigned long)host_raddr);
4878
4879 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4880 PAGE_VALID | PAGE_READ |
4881 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
4882
4883 for (i = 0; i < N_SHM_REGIONS; i++) {
4884 if (!shm_regions[i].in_use) {
4885 shm_regions[i].in_use = true;
4886 shm_regions[i].start = raddr;
4887 shm_regions[i].size = shm_info.shm_segsz;
4888 break;
4889 }
4890 }
4891
4892 mmap_unlock();
4893 return raddr;
4894
4895 }
4896
4897 static inline abi_long do_shmdt(abi_ulong shmaddr)
4898 {
4899 int i;
4900
4901 for (i = 0; i < N_SHM_REGIONS; ++i) {
4902 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4903 shm_regions[i].in_use = false;
4904 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4905 break;
4906 }
4907 }
4908
4909 return get_errno(shmdt(g2h(shmaddr)));
4910 }
4911
4912 #ifdef TARGET_NR_ipc
4913 /* ??? This only works with linear mappings. */
4914 /* do_ipc() must return target values and target errnos. */
4915 static abi_long do_ipc(CPUArchState *cpu_env,
4916 unsigned int call, abi_long first,
4917 abi_long second, abi_long third,
4918 abi_long ptr, abi_long fifth)
4919 {
4920 int version;
4921 abi_long ret = 0;
4922
4923 version = call >> 16;
4924 call &= 0xffff;
4925
4926 switch (call) {
4927 case IPCOP_semop:
4928 ret = do_semop(first, ptr, second);
4929 break;
4930
4931 case IPCOP_semget:
4932 ret = get_errno(semget(first, second, third));
4933 break;
4934
4935 case IPCOP_semctl: {
4936 /* The semun argument to semctl is passed by value, so dereference the
4937 * ptr argument. */
4938 abi_ulong atptr;
4939 get_user_ual(atptr, ptr);
4940 ret = do_semctl(first, second, third, atptr);
4941 break;
4942 }
4943
4944 case IPCOP_msgget:
4945 ret = get_errno(msgget(first, second));
4946 break;
4947
4948 case IPCOP_msgsnd:
4949 ret = do_msgsnd(first, ptr, second, third);
4950 break;
4951
4952 case IPCOP_msgctl:
4953 ret = do_msgctl(first, second, ptr);
4954 break;
4955
4956 case IPCOP_msgrcv:
4957 switch (version) {
4958 case 0:
4959 {
4960 struct target_ipc_kludge {
4961 abi_long msgp;
4962 abi_long msgtyp;
4963 } *tmp;
4964
4965 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4966 ret = -TARGET_EFAULT;
4967 break;
4968 }
4969
4970 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4971
4972 unlock_user_struct(tmp, ptr, 0);
4973 break;
4974 }
4975 default:
4976 ret = do_msgrcv(first, ptr, second, fifth, third);
4977 }
4978 break;
4979
4980 case IPCOP_shmat:
4981 switch (version) {
4982 default:
4983 {
4984 abi_ulong raddr;
4985 raddr = do_shmat(cpu_env, first, ptr, second);
4986 if (is_error(raddr))
4987 return get_errno(raddr);
4988 if (put_user_ual(raddr, third))
4989 return -TARGET_EFAULT;
4990 break;
4991 }
4992 case 1:
4993 ret = -TARGET_EINVAL;
4994 break;
4995 }
4996 break;
4997 case IPCOP_shmdt:
4998 ret = do_shmdt(ptr);
4999 break;
5000
5001 case IPCOP_shmget:
5002 /* IPC_* flag values are the same on all linux platforms */
5003 ret = get_errno(shmget(first, second, third));
5004 break;
5005
5006 /* IPC_* and SHM_* command values are the same on all linux platforms */
5007 case IPCOP_shmctl:
5008 ret = do_shmctl(first, second, ptr);
5009 break;
5010 default:
5011 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version);
5012 ret = -TARGET_ENOSYS;
5013 break;
5014 }
5015 return ret;
5016 }
5017 #endif
5018
5019 /* kernel structure types definitions */
5020
5021 #define STRUCT(name, ...) STRUCT_ ## name,
5022 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
5023 enum {
5024 #include "syscall_types.h"
5025 STRUCT_MAX
5026 };
5027 #undef STRUCT
5028 #undef STRUCT_SPECIAL
5029
5030 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
5031 #define STRUCT_SPECIAL(name)
5032 #include "syscall_types.h"
5033 #undef STRUCT
5034 #undef STRUCT_SPECIAL
5035
5036 typedef struct IOCTLEntry IOCTLEntry;
5037
5038 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
5039 int fd, int cmd, abi_long arg);
5040
5041 struct IOCTLEntry {
5042 int target_cmd;
5043 unsigned int host_cmd;
5044 const char *name;
5045 int access;
5046 do_ioctl_fn *do_ioctl;
5047 const argtype arg_type[5];
5048 };
5049
5050 #define IOC_R 0x0001
5051 #define IOC_W 0x0002
5052 #define IOC_RW (IOC_R | IOC_W)
5053
5054 #define MAX_STRUCT_SIZE 4096
5055
5056 #ifdef CONFIG_FIEMAP
5057 /* So fiemap access checks don't overflow on 32 bit systems.
5058 * This is very slightly smaller than the limit imposed by
5059 * the underlying kernel.
5060 */
5061 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
5062 / sizeof(struct fiemap_extent))
5063
5064 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
5065 int fd, int cmd, abi_long arg)
5066 {
5067 /* The parameter for this ioctl is a struct fiemap followed
5068 * by an array of struct fiemap_extent whose size is set
5069 * in fiemap->fm_extent_count. The array is filled in by the
5070 * ioctl.
5071 */
5072 int target_size_in, target_size_out;
5073 struct fiemap *fm;
5074 const argtype *arg_type = ie->arg_type;
5075 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
5076 void *argptr, *p;
5077 abi_long ret;
5078 int i, extent_size = thunk_type_size(extent_arg_type, 0);
5079 uint32_t outbufsz;
5080 int free_fm = 0;
5081
5082 assert(arg_type[0] == TYPE_PTR);
5083 assert(ie->access == IOC_RW);
5084 arg_type++;
5085 target_size_in = thunk_type_size(arg_type, 0);
5086 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
5087 if (!argptr) {
5088 return -TARGET_EFAULT;
5089 }
5090 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5091 unlock_user(argptr, arg, 0);
5092 fm = (struct fiemap *)buf_temp;
5093 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
5094 return -TARGET_EINVAL;
5095 }
5096
5097 outbufsz = sizeof (*fm) +
5098 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
5099
5100 if (outbufsz > MAX_STRUCT_SIZE) {
5101 /* We can't fit all the extents into the fixed size buffer.
5102 * Allocate one that is large enough and use it instead.
5103 */
5104 fm = g_try_malloc(outbufsz);
5105 if (!fm) {
5106 return -TARGET_ENOMEM;
5107 }
5108 memcpy(fm, buf_temp, sizeof(struct fiemap));
5109 free_fm = 1;
5110 }
5111 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
5112 if (!is_error(ret)) {
5113 target_size_out = target_size_in;
5114 /* An extent_count of 0 means we were only counting the extents
5115 * so there are no structs to copy
5116 */
5117 if (fm->fm_extent_count != 0) {
5118 target_size_out += fm->fm_mapped_extents * extent_size;
5119 }
5120 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
5121 if (!argptr) {
5122 ret = -TARGET_EFAULT;
5123 } else {
5124 /* Convert the struct fiemap */
5125 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
5126 if (fm->fm_extent_count != 0) {
5127 p = argptr + target_size_in;
5128 /* ...and then all the struct fiemap_extents */
5129 for (i = 0; i < fm->fm_mapped_extents; i++) {
5130 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
5131 THUNK_TARGET);
5132 p += extent_size;
5133 }
5134 }
5135 unlock_user(argptr, arg, target_size_out);
5136 }
5137 }
5138 if (free_fm) {
5139 g_free(fm);
5140 }
5141 return ret;
5142 }
5143 #endif
5144
5145 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
5146 int fd, int cmd, abi_long arg)
5147 {
5148 const argtype *arg_type = ie->arg_type;
5149 int target_size;
5150 void *argptr;
5151 int ret;
5152 struct ifconf *host_ifconf;
5153 uint32_t outbufsz;
5154 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
5155 int target_ifreq_size;
5156 int nb_ifreq;
5157 int free_buf = 0;
5158 int i;
5159 int target_ifc_len;
5160 abi_long target_ifc_buf;
5161 int host_ifc_len;
5162 char *host_ifc_buf;
5163
5164 assert(arg_type[0] == TYPE_PTR);
5165 assert(ie->access == IOC_RW);
5166
5167 arg_type++;
5168 target_size = thunk_type_size(arg_type, 0);
5169
5170 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5171 if (!argptr)
5172 return -TARGET_EFAULT;
5173 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5174 unlock_user(argptr, arg, 0);
5175
5176 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
5177 target_ifc_len = host_ifconf->ifc_len;
5178 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
5179
5180 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
5181 nb_ifreq = target_ifc_len / target_ifreq_size;
5182 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
5183
5184 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
5185 if (outbufsz > MAX_STRUCT_SIZE) {
5186 /* We can't fit all the extents into the fixed size buffer.
5187 * Allocate one that is large enough and use it instead.
5188 */
5189 host_ifconf = malloc(outbufsz);
5190 if (!host_ifconf) {
5191 return -TARGET_ENOMEM;
5192 }
5193 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
5194 free_buf = 1;
5195 }
5196 host_ifc_buf = (char*)host_ifconf + sizeof(*host_ifconf);
5197
5198 host_ifconf->ifc_len = host_ifc_len;
5199 host_ifconf->ifc_buf = host_ifc_buf;
5200
5201 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
5202 if (!is_error(ret)) {
5203 /* convert host ifc_len to target ifc_len */
5204
5205 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
5206 target_ifc_len = nb_ifreq * target_ifreq_size;
5207 host_ifconf->ifc_len = target_ifc_len;
5208
5209 /* restore target ifc_buf */
5210
5211 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
5212
5213 /* copy struct ifconf to target user */
5214
5215 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5216 if (!argptr)
5217 return -TARGET_EFAULT;
5218 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
5219 unlock_user(argptr, arg, target_size);
5220
5221 /* copy ifreq[] to target user */
5222
5223 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
5224 for (i = 0; i < nb_ifreq ; i++) {
5225 thunk_convert(argptr + i * target_ifreq_size,
5226 host_ifc_buf + i * sizeof(struct ifreq),
5227 ifreq_arg_type, THUNK_TARGET);
5228 }
5229 unlock_user(argptr, target_ifc_buf, target_ifc_len);
5230 }
5231
5232 if (free_buf) {
5233 free(host_ifconf);
5234 }
5235
5236 return ret;
5237 }
5238
5239 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5240 int cmd, abi_long arg)
5241 {
5242 void *argptr;
5243 struct dm_ioctl *host_dm;
5244 abi_long guest_data;
5245 uint32_t guest_data_size;
5246 int target_size;
5247 const argtype *arg_type = ie->arg_type;
5248 abi_long ret;
5249 void *big_buf = NULL;
5250 char *host_data;
5251
5252 arg_type++;
5253 target_size = thunk_type_size(arg_type, 0);
5254 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5255 if (!argptr) {
5256 ret = -TARGET_EFAULT;
5257 goto out;
5258 }
5259 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5260 unlock_user(argptr, arg, 0);
5261
5262 /* buf_temp is too small, so fetch things into a bigger buffer */
5263 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5264 memcpy(big_buf, buf_temp, target_size);
5265 buf_temp = big_buf;
5266 host_dm = big_buf;
5267
5268 guest_data = arg + host_dm->data_start;
5269 if ((guest_data - arg) < 0) {
5270 ret = -TARGET_EINVAL;
5271 goto out;
5272 }
5273 guest_data_size = host_dm->data_size - host_dm->data_start;
5274 host_data = (char*)host_dm + host_dm->data_start;
5275
5276 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5277 if (!argptr) {
5278 ret = -TARGET_EFAULT;
5279 goto out;
5280 }
5281
5282 switch (ie->host_cmd) {
5283 case DM_REMOVE_ALL:
5284 case DM_LIST_DEVICES:
5285 case DM_DEV_CREATE:
5286 case DM_DEV_REMOVE:
5287 case DM_DEV_SUSPEND:
5288 case DM_DEV_STATUS:
5289 case DM_DEV_WAIT:
5290 case DM_TABLE_STATUS:
5291 case DM_TABLE_CLEAR:
5292 case DM_TABLE_DEPS:
5293 case DM_LIST_VERSIONS:
5294 /* no input data */
5295 break;
5296 case DM_DEV_RENAME:
5297 case DM_DEV_SET_GEOMETRY:
5298 /* data contains only strings */
5299 memcpy(host_data, argptr, guest_data_size);
5300 break;
5301 case DM_TARGET_MSG:
5302 memcpy(host_data, argptr, guest_data_size);
5303 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5304 break;
5305 case DM_TABLE_LOAD:
5306 {
5307 void *gspec = argptr;
5308 void *cur_data = host_data;
5309 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5310 int spec_size = thunk_type_size(arg_type, 0);
5311 int i;
5312
5313 for (i = 0; i < host_dm->target_count; i++) {
5314 struct dm_target_spec *spec = cur_data;
5315 uint32_t next;
5316 int slen;
5317
5318 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
5319 slen = strlen((char*)gspec + spec_size) + 1;
5320 next = spec->next;
5321 spec->next = sizeof(*spec) + slen;
5322 strcpy((char*)&spec[1], gspec + spec_size);
5323 gspec += next;
5324 cur_data += spec->next;
5325 }
5326 break;
5327 }
5328 default:
5329 ret = -TARGET_EINVAL;
5330 unlock_user(argptr, guest_data, 0);
5331 goto out;
5332 }
5333 unlock_user(argptr, guest_data, 0);
5334
5335 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5336 if (!is_error(ret)) {
5337 guest_data = arg + host_dm->data_start;
5338 guest_data_size = host_dm->data_size - host_dm->data_start;
5339 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5340 switch (ie->host_cmd) {
5341 case DM_REMOVE_ALL:
5342 case DM_DEV_CREATE:
5343 case DM_DEV_REMOVE:
5344 case DM_DEV_RENAME:
5345 case DM_DEV_SUSPEND:
5346 case DM_DEV_STATUS:
5347 case DM_TABLE_LOAD:
5348 case DM_TABLE_CLEAR:
5349 case DM_TARGET_MSG:
5350 case DM_DEV_SET_GEOMETRY:
5351 /* no return data */
5352 break;
5353 case DM_LIST_DEVICES:
5354 {
5355 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5356 uint32_t remaining_data = guest_data_size;
5357 void *cur_data = argptr;
5358 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5359 int nl_size = 12; /* can't use thunk_size due to alignment */
5360
5361 while (1) {
5362 uint32_t next = nl->next;
5363 if (next) {
5364 nl->next = nl_size + (strlen(nl->name) + 1);
5365 }
5366 if (remaining_data < nl->next) {
5367 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5368 break;
5369 }
5370 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
5371 strcpy(cur_data + nl_size, nl->name);
5372 cur_data += nl->next;
5373 remaining_data -= nl->next;
5374 if (!next) {
5375 break;
5376 }
5377 nl = (void*)nl + next;
5378 }
5379 break;
5380 }
5381 case DM_DEV_WAIT:
5382 case DM_TABLE_STATUS:
5383 {
5384 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5385 void *cur_data = argptr;
5386 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5387 int spec_size = thunk_type_size(arg_type, 0);
5388 int i;
5389
5390 for (i = 0; i < host_dm->target_count; i++) {
5391 uint32_t next = spec->next;
5392 int slen = strlen((char*)&spec[1]) + 1;
5393 spec->next = (cur_data - argptr) + spec_size + slen;
5394 if (guest_data_size < spec->next) {
5395 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5396 break;
5397 }
5398 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5399 strcpy(cur_data + spec_size, (char*)&spec[1]);
5400 cur_data = argptr + spec->next;
5401 spec = (void*)host_dm + host_dm->data_start + next;
5402 }
5403 break;
5404 }
5405 case DM_TABLE_DEPS:
5406 {
5407 void *hdata = (void*)host_dm + host_dm->data_start;
5408 int count = *(uint32_t*)hdata;
5409 uint64_t *hdev = hdata + 8;
5410 uint64_t *gdev = argptr + 8;
5411 int i;
5412
5413 *(uint32_t*)argptr = tswap32(count);
5414 for (i = 0; i < count; i++) {
5415 *gdev = tswap64(*hdev);
5416 gdev++;
5417 hdev++;
5418 }
5419 break;
5420 }
5421 case DM_LIST_VERSIONS:
5422 {
5423 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5424 uint32_t remaining_data = guest_data_size;
5425 void *cur_data = argptr;
5426 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5427 int vers_size = thunk_type_size(arg_type, 0);
5428
5429 while (1) {
5430 uint32_t next = vers->next;
5431 if (next) {
5432 vers->next = vers_size + (strlen(vers->name) + 1);
5433 }
5434 if (remaining_data < vers->next) {
5435 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5436 break;
5437 }
5438 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5439 strcpy(cur_data + vers_size, vers->name);
5440 cur_data += vers->next;
5441 remaining_data -= vers->next;
5442 if (!next) {
5443 break;
5444 }
5445 vers = (void*)vers + next;
5446 }
5447 break;
5448 }
5449 default:
5450 unlock_user(argptr, guest_data, 0);
5451 ret = -TARGET_EINVAL;
5452 goto out;
5453 }
5454 unlock_user(argptr, guest_data, guest_data_size);
5455
5456 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5457 if (!argptr) {
5458 ret = -TARGET_EFAULT;
5459 goto out;
5460 }
5461 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5462 unlock_user(argptr, arg, target_size);
5463 }
5464 out:
5465 g_free(big_buf);
5466 return ret;
5467 }
5468
5469 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5470 int cmd, abi_long arg)
5471 {
5472 void *argptr;
5473 int target_size;
5474 const argtype *arg_type = ie->arg_type;
5475 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5476 abi_long ret;
5477
5478 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5479 struct blkpg_partition host_part;
5480
5481 /* Read and convert blkpg */
5482 arg_type++;
5483 target_size = thunk_type_size(arg_type, 0);
5484 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5485 if (!argptr) {
5486 ret = -TARGET_EFAULT;
5487 goto out;
5488 }
5489 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5490 unlock_user(argptr, arg, 0);
5491
5492 switch (host_blkpg->op) {
5493 case BLKPG_ADD_PARTITION:
5494 case BLKPG_DEL_PARTITION:
5495 /* payload is struct blkpg_partition */
5496 break;
5497 default:
5498 /* Unknown opcode */
5499 ret = -TARGET_EINVAL;
5500 goto out;
5501 }
5502
5503 /* Read and convert blkpg->data */
5504 arg = (abi_long)(uintptr_t)host_blkpg->data;
5505 target_size = thunk_type_size(part_arg_type, 0);
5506 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5507 if (!argptr) {
5508 ret = -TARGET_EFAULT;
5509 goto out;
5510 }
5511 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5512 unlock_user(argptr, arg, 0);
5513
5514 /* Swizzle the data pointer to our local copy and call! */
5515 host_blkpg->data = &host_part;
5516 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5517
5518 out:
5519 return ret;
5520 }
5521
5522 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5523 int fd, int cmd, abi_long arg)
5524 {
5525 const argtype *arg_type = ie->arg_type;
5526 const StructEntry *se;
5527 const argtype *field_types;
5528 const int *dst_offsets, *src_offsets;
5529 int target_size;
5530 void *argptr;
5531 abi_ulong *target_rt_dev_ptr;
5532 unsigned long *host_rt_dev_ptr;
5533 abi_long ret;
5534 int i;
5535
5536 assert(ie->access == IOC_W);
5537 assert(*arg_type == TYPE_PTR);
5538 arg_type++;
5539 assert(*arg_type == TYPE_STRUCT);
5540 target_size = thunk_type_size(arg_type, 0);
5541 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5542 if (!argptr) {
5543 return -TARGET_EFAULT;
5544 }
5545 arg_type++;
5546 assert(*arg_type == (int)STRUCT_rtentry);
5547 se = struct_entries + *arg_type++;
5548 assert(se->convert[0] == NULL);
5549 /* convert struct here to be able to catch rt_dev string */
5550 field_types = se->field_types;
5551 dst_offsets = se->field_offsets[THUNK_HOST];
5552 src_offsets = se->field_offsets[THUNK_TARGET];
5553 for (i = 0; i < se->nb_fields; i++) {
5554 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5555 assert(*field_types == TYPE_PTRVOID);
5556 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
5557 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5558 if (*target_rt_dev_ptr != 0) {
5559 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5560 tswapal(*target_rt_dev_ptr));
5561 if (!*host_rt_dev_ptr) {
5562 unlock_user(argptr, arg, 0);
5563 return -TARGET_EFAULT;
5564 }
5565 } else {
5566 *host_rt_dev_ptr = 0;
5567 }
5568 field_types++;
5569 continue;
5570 }
5571 field_types = thunk_convert(buf_temp + dst_offsets[i],
5572 argptr + src_offsets[i],
5573 field_types, THUNK_HOST);
5574 }
5575 unlock_user(argptr, arg, 0);
5576
5577 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5578 if (*host_rt_dev_ptr != 0) {
5579 unlock_user((void *)*host_rt_dev_ptr,
5580 *target_rt_dev_ptr, 0);
5581 }
5582 return ret;
5583 }
5584
5585 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5586 int fd, int cmd, abi_long arg)
5587 {
5588 int sig = target_to_host_signal(arg);
5589 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5590 }
5591
5592 static IOCTLEntry ioctl_entries[] = {
5593 #define IOCTL(cmd, access, ...) \
5594 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5595 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5596 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5597 #define IOCTL_IGNORE(cmd) \
5598 { TARGET_ ## cmd, 0, #cmd },
5599 #include "ioctls.h"
5600 { 0, 0, },
5601 };
5602
5603 /* ??? Implement proper locking for ioctls. */
5604 /* do_ioctl() Must return target values and target errnos. */
5605 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5606 {
5607 const IOCTLEntry *ie;
5608 const argtype *arg_type;
5609 abi_long ret;
5610 uint8_t buf_temp[MAX_STRUCT_SIZE];
5611 int target_size;
5612 void *argptr;
5613
5614 ie = ioctl_entries;
5615 for(;;) {
5616 if (ie->target_cmd == 0) {
5617 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5618 return -TARGET_ENOSYS;
5619 }
5620 if (ie->target_cmd == cmd)
5621 break;
5622 ie++;
5623 }
5624 arg_type = ie->arg_type;
5625 #if defined(DEBUG)
5626 gemu_log("ioctl: cmd=0x%04lx (%s)\n", (long)cmd, ie->name);
5627 #endif
5628 if (ie->do_ioctl) {
5629 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5630 } else if (!ie->host_cmd) {
5631 /* Some architectures define BSD ioctls in their headers
5632 that are not implemented in Linux. */
5633 return -TARGET_ENOSYS;
5634 }
5635
5636 switch(arg_type[0]) {
5637 case TYPE_NULL:
5638 /* no argument */
5639 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5640 break;
5641 case TYPE_PTRVOID:
5642 case TYPE_INT:
5643 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5644 break;
5645 case TYPE_PTR:
5646 arg_type++;
5647 target_size = thunk_type_size(arg_type, 0);
5648 switch(ie->access) {
5649 case IOC_R:
5650 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5651 if (!is_error(ret)) {
5652 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5653 if (!argptr)
5654 return -TARGET_EFAULT;
5655 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5656 unlock_user(argptr, arg, target_size);
5657 }
5658 break;
5659 case IOC_W:
5660 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5661 if (!argptr)
5662 return -TARGET_EFAULT;
5663 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5664 unlock_user(argptr, arg, 0);
5665 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5666 break;
5667 default:
5668 case IOC_RW:
5669 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5670 if (!argptr)
5671 return -TARGET_EFAULT;
5672 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5673 unlock_user(argptr, arg, 0);
5674 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5675 if (!is_error(ret)) {
5676 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5677 if (!argptr)
5678 return -TARGET_EFAULT;
5679 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5680 unlock_user(argptr, arg, target_size);
5681 }
5682 break;
5683 }
5684 break;
5685 default:
5686 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5687 (long)cmd, arg_type[0]);
5688 ret = -TARGET_ENOSYS;
5689 break;
5690 }
5691 return ret;
5692 }
5693
5694 static const bitmask_transtbl iflag_tbl[] = {
5695 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5696 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5697 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5698 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5699 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5700 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5701 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5702 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5703 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5704 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5705 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5706 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5707 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5708 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5709 { 0, 0, 0, 0 }
5710 };
5711
5712 static const bitmask_transtbl oflag_tbl[] = {
5713 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5714 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5715 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5716 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5717 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5718 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5719 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5720 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5721 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5722 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5723 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5724 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5725 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5726 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5727 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5728 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5729 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5730 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5731 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5732 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5733 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5734 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5735 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5736 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5737 { 0, 0, 0, 0 }
5738 };
5739
5740 static const bitmask_transtbl cflag_tbl[] = {
5741 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5742 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5743 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5744 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5745 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5746 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5747 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5748 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5749 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5750 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5751 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5752 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5753 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5754 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5755 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5756 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5757 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5758 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5759 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5760 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5761 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5762 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5763 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5764 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5765 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5766 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5767 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5768 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5769 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5770 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5771 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5772 { 0, 0, 0, 0 }
5773 };
5774
5775 static const bitmask_transtbl lflag_tbl[] = {
5776 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5777 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5778 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5779 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5780 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5781 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5782 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5783 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5784 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5785 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5786 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5787 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5788 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5789 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5790 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5791 { 0, 0, 0, 0 }
5792 };
5793
5794 static void target_to_host_termios (void *dst, const void *src)
5795 {
5796 struct host_termios *host = dst;
5797 const struct target_termios *target = src;
5798
5799 host->c_iflag =
5800 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5801 host->c_oflag =
5802 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5803 host->c_cflag =
5804 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5805 host->c_lflag =
5806 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5807 host->c_line = target->c_line;
5808
5809 memset(host->c_cc, 0, sizeof(host->c_cc));
5810 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5811 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5812 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5813 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5814 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5815 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5816 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5817 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5818 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5819 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5820 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5821 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5822 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5823 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5824 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5825 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5826 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5827 }
5828
5829 static void host_to_target_termios (void *dst, const void *src)
5830 {
5831 struct target_termios *target = dst;
5832 const struct host_termios *host = src;
5833
5834 target->c_iflag =
5835 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5836 target->c_oflag =
5837 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5838 target->c_cflag =
5839 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5840 target->c_lflag =
5841 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5842 target->c_line = host->c_line;
5843
5844 memset(target->c_cc, 0, sizeof(target->c_cc));
5845 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5846 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5847 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5848 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5849 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5850 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5851 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5852 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5853 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5854 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5855 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5856 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5857 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5858 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5859 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5860 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5861 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5862 }
5863
5864 static const StructEntry struct_termios_def = {
5865 .convert = { host_to_target_termios, target_to_host_termios },
5866 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5867 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5868 };
5869
5870 static bitmask_transtbl mmap_flags_tbl[] = {
5871 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5872 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5873 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5874 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
5875 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
5876 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
5877 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
5878 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5879 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, MAP_NORESERVE,
5880 MAP_NORESERVE },
5881 { 0, 0, 0, 0 }
5882 };
5883
5884 #if defined(TARGET_I386)
5885
5886 /* NOTE: there is really one LDT for all the threads */
5887 static uint8_t *ldt_table;
5888
5889 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5890 {
5891 int size;
5892 void *p;
5893
5894 if (!ldt_table)
5895 return 0;
5896 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5897 if (size > bytecount)
5898 size = bytecount;
5899 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5900 if (!p)
5901 return -TARGET_EFAULT;
5902 /* ??? Should this by byteswapped? */
5903 memcpy(p, ldt_table, size);
5904 unlock_user(p, ptr, size);
5905 return size;
5906 }
5907
5908 /* XXX: add locking support */
5909 static abi_long write_ldt(CPUX86State *env,
5910 abi_ulong ptr, unsigned long bytecount, int oldmode)
5911 {
5912 struct target_modify_ldt_ldt_s ldt_info;
5913 struct target_modify_ldt_ldt_s *target_ldt_info;
5914 int seg_32bit, contents, read_exec_only, limit_in_pages;
5915 int seg_not_present, useable, lm;
5916 uint32_t *lp, entry_1, entry_2;
5917
5918 if (bytecount != sizeof(ldt_info))
5919 return -TARGET_EINVAL;
5920 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5921 return -TARGET_EFAULT;
5922 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5923 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5924 ldt_info.limit = tswap32(target_ldt_info->limit);
5925 ldt_info.flags = tswap32(target_ldt_info->flags);
5926 unlock_user_struct(target_ldt_info, ptr, 0);
5927
5928 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5929 return -TARGET_EINVAL;
5930 seg_32bit = ldt_info.flags & 1;
5931 contents = (ldt_info.flags >> 1) & 3;
5932 read_exec_only = (ldt_info.flags >> 3) & 1;
5933 limit_in_pages = (ldt_info.flags >> 4) & 1;
5934 seg_not_present = (ldt_info.flags >> 5) & 1;
5935 useable = (ldt_info.flags >> 6) & 1;
5936 #ifdef TARGET_ABI32
5937 lm = 0;
5938 #else
5939 lm = (ldt_info.flags >> 7) & 1;
5940 #endif
5941 if (contents == 3) {
5942 if (oldmode)
5943 return -TARGET_EINVAL;
5944 if (seg_not_present == 0)
5945 return -TARGET_EINVAL;
5946 }
5947 /* allocate the LDT */
5948 if (!ldt_table) {
5949 env->ldt.base = target_mmap(0,
5950 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
5951 PROT_READ|PROT_WRITE,
5952 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
5953 if (env->ldt.base == -1)
5954 return -TARGET_ENOMEM;
5955 memset(g2h(env->ldt.base), 0,
5956 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
5957 env->ldt.limit = 0xffff;
5958 ldt_table = g2h(env->ldt.base);
5959 }
5960
5961 /* NOTE: same code as Linux kernel */
5962 /* Allow LDTs to be cleared by the user. */
5963 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5964 if (oldmode ||
5965 (contents == 0 &&
5966 read_exec_only == 1 &&
5967 seg_32bit == 0 &&
5968 limit_in_pages == 0 &&
5969 seg_not_present == 1 &&
5970 useable == 0 )) {
5971 entry_1 = 0;
5972 entry_2 = 0;
5973 goto install;
5974 }
5975 }
5976
5977 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5978 (ldt_info.limit & 0x0ffff);
5979 entry_2 = (ldt_info.base_addr & 0xff000000) |
5980 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5981 (ldt_info.limit & 0xf0000) |
5982 ((read_exec_only ^ 1) << 9) |
5983 (contents << 10) |
5984 ((seg_not_present ^ 1) << 15) |
5985 (seg_32bit << 22) |
5986 (limit_in_pages << 23) |
5987 (lm << 21) |
5988 0x7000;
5989 if (!oldmode)
5990 entry_2 |= (useable << 20);
5991
5992 /* Install the new entry ... */
5993 install:
5994 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
5995 lp[0] = tswap32(entry_1);
5996 lp[1] = tswap32(entry_2);
5997 return 0;
5998 }
5999
6000 /* specific and weird i386 syscalls */
6001 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
6002 unsigned long bytecount)
6003 {
6004 abi_long ret;
6005
6006 switch (func) {
6007 case 0:
6008 ret = read_ldt(ptr, bytecount);
6009 break;
6010 case 1:
6011 ret = write_ldt(env, ptr, bytecount, 1);
6012 break;
6013 case 0x11:
6014 ret = write_ldt(env, ptr, bytecount, 0);
6015 break;
6016 default:
6017 ret = -TARGET_ENOSYS;
6018 break;
6019 }
6020 return ret;
6021 }
6022
6023 #if defined(TARGET_I386) && defined(TARGET_ABI32)
6024 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
6025 {
6026 uint64_t *gdt_table = g2h(env->gdt.base);
6027 struct target_modify_ldt_ldt_s ldt_info;
6028 struct target_modify_ldt_ldt_s *target_ldt_info;
6029 int seg_32bit, contents, read_exec_only, limit_in_pages;
6030 int seg_not_present, useable, lm;
6031 uint32_t *lp, entry_1, entry_2;
6032 int i;
6033
6034 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6035 if (!target_ldt_info)
6036 return -TARGET_EFAULT;
6037 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6038 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6039 ldt_info.limit = tswap32(target_ldt_info->limit);
6040 ldt_info.flags = tswap32(target_ldt_info->flags);
6041 if (ldt_info.entry_number == -1) {
6042 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
6043 if (gdt_table[i] == 0) {
6044 ldt_info.entry_number = i;
6045 target_ldt_info->entry_number = tswap32(i);
6046 break;
6047 }
6048 }
6049 }
6050 unlock_user_struct(target_ldt_info, ptr, 1);
6051
6052 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
6053 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
6054 return -TARGET_EINVAL;
6055 seg_32bit = ldt_info.flags & 1;
6056 contents = (ldt_info.flags >> 1) & 3;
6057 read_exec_only = (ldt_info.flags >> 3) & 1;
6058 limit_in_pages = (ldt_info.flags >> 4) & 1;
6059 seg_not_present = (ldt_info.flags >> 5) & 1;
6060 useable = (ldt_info.flags >> 6) & 1;
6061 #ifdef TARGET_ABI32
6062 lm = 0;
6063 #else
6064 lm = (ldt_info.flags >> 7) & 1;
6065 #endif
6066
6067 if (contents == 3) {
6068 if (seg_not_present == 0)
6069 return -TARGET_EINVAL;
6070 }
6071
6072 /* NOTE: same code as Linux kernel */
6073 /* Allow LDTs to be cleared by the user. */
6074 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6075 if ((contents == 0 &&
6076 read_exec_only == 1 &&
6077 seg_32bit == 0 &&
6078 limit_in_pages == 0 &&
6079 seg_not_present == 1 &&
6080 useable == 0 )) {
6081 entry_1 = 0;
6082 entry_2 = 0;
6083 goto install;
6084 }
6085 }
6086
6087 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6088 (ldt_info.limit & 0x0ffff);
6089 entry_2 = (ldt_info.base_addr & 0xff000000) |
6090 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6091 (ldt_info.limit & 0xf0000) |
6092 ((read_exec_only ^ 1) << 9) |
6093 (contents << 10) |
6094 ((seg_not_present ^ 1) << 15) |
6095 (seg_32bit << 22) |
6096 (limit_in_pages << 23) |
6097 (useable << 20) |
6098 (lm << 21) |
6099 0x7000;
6100
6101 /* Install the new entry ... */
6102 install:
6103 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
6104 lp[0] = tswap32(entry_1);
6105 lp[1] = tswap32(entry_2);
6106 return 0;
6107 }
6108
6109 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
6110 {
6111 struct target_modify_ldt_ldt_s *target_ldt_info;
6112 uint64_t *gdt_table = g2h(env->gdt.base);
6113 uint32_t base_addr, limit, flags;
6114 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
6115 int seg_not_present, useable, lm;
6116 uint32_t *lp, entry_1, entry_2;
6117
6118 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6119 if (!target_ldt_info)
6120 return -TARGET_EFAULT;
6121 idx = tswap32(target_ldt_info->entry_number);
6122 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
6123 idx > TARGET_GDT_ENTRY_TLS_MAX) {
6124 unlock_user_struct(target_ldt_info, ptr, 1);
6125 return -TARGET_EINVAL;
6126 }
6127 lp = (uint32_t *)(gdt_table + idx);
6128 entry_1 = tswap32(lp[0]);
6129 entry_2 = tswap32(lp[1]);
6130
6131 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
6132 contents = (entry_2 >> 10) & 3;
6133 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
6134 seg_32bit = (entry_2 >> 22) & 1;
6135 limit_in_pages = (entry_2 >> 23) & 1;
6136 useable = (entry_2 >> 20) & 1;
6137 #ifdef TARGET_ABI32
6138 lm = 0;
6139 #else
6140 lm = (entry_2 >> 21) & 1;
6141 #endif
6142 flags = (seg_32bit << 0) | (contents << 1) |
6143 (read_exec_only << 3) | (limit_in_pages << 4) |
6144 (seg_not_present << 5) | (useable << 6) | (lm << 7);
6145 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
6146 base_addr = (entry_1 >> 16) |
6147 (entry_2 & 0xff000000) |
6148 ((entry_2 & 0xff) << 16);
6149 target_ldt_info->base_addr = tswapal(base_addr);
6150 target_ldt_info->limit = tswap32(limit);
6151 target_ldt_info->flags = tswap32(flags);
6152 unlock_user_struct(target_ldt_info, ptr, 1);
6153 return 0;
6154 }
6155 #endif /* TARGET_I386 && TARGET_ABI32 */
6156
6157 #ifndef TARGET_ABI32
6158 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6159 {
6160 abi_long ret = 0;
6161 abi_ulong val;
6162 int idx;
6163
6164 switch(code) {
6165 case TARGET_ARCH_SET_GS:
6166 case TARGET_ARCH_SET_FS:
6167 if (code == TARGET_ARCH_SET_GS)
6168 idx = R_GS;
6169 else
6170 idx = R_FS;
6171 cpu_x86_load_seg(env, idx, 0);
6172 env->segs[idx].base = addr;
6173 break;
6174 case TARGET_ARCH_GET_GS:
6175 case TARGET_ARCH_GET_FS:
6176 if (code == TARGET_ARCH_GET_GS)
6177 idx = R_GS;
6178 else
6179 idx = R_FS;
6180 val = env->segs[idx].base;
6181 if (put_user(val, addr, abi_ulong))
6182 ret = -TARGET_EFAULT;
6183 break;
6184 default:
6185 ret = -TARGET_EINVAL;
6186 break;
6187 }
6188 return ret;
6189 }
6190 #endif
6191
6192 #endif /* defined(TARGET_I386) */
6193
6194 #define NEW_STACK_SIZE 0x40000
6195
6196
6197 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6198 typedef struct {
6199 CPUArchState *env;
6200 pthread_mutex_t mutex;
6201 pthread_cond_t cond;
6202 pthread_t thread;
6203 uint32_t tid;
6204 abi_ulong child_tidptr;
6205 abi_ulong parent_tidptr;
6206 sigset_t sigmask;
6207 } new_thread_info;
6208
6209 static void *clone_func(void *arg)
6210 {
6211 new_thread_info *info = arg;
6212 CPUArchState *env;
6213 CPUState *cpu;
6214 TaskState *ts;
6215
6216 rcu_register_thread();
6217 env = info->env;
6218 cpu = ENV_GET_CPU(env);
6219 thread_cpu = cpu;
6220 ts = (TaskState *)cpu->opaque;
6221 info->tid = gettid();
6222 task_settid(ts);
6223 if (info->child_tidptr)
6224 put_user_u32(info->tid, info->child_tidptr);
6225 if (info->parent_tidptr)
6226 put_user_u32(info->tid, info->parent_tidptr);
6227 /* Enable signals. */
6228 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6229 /* Signal to the parent that we're ready. */
6230 pthread_mutex_lock(&info->mutex);
6231 pthread_cond_broadcast(&info->cond);
6232 pthread_mutex_unlock(&info->mutex);
6233 /* Wait until the parent has finshed initializing the tls state. */
6234 pthread_mutex_lock(&clone_lock);
6235 pthread_mutex_unlock(&clone_lock);
6236 cpu_loop(env);
6237 /* never exits */
6238 return NULL;
6239 }
6240
6241 /* do_fork() Must return host values and target errnos (unlike most
6242 do_*() functions). */
6243 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6244 abi_ulong parent_tidptr, target_ulong newtls,
6245 abi_ulong child_tidptr)
6246 {
6247 CPUState *cpu = ENV_GET_CPU(env);
6248 int ret;
6249 TaskState *ts;
6250 CPUState *new_cpu;
6251 CPUArchState *new_env;
6252 sigset_t sigmask;
6253
6254 flags &= ~CLONE_IGNORED_FLAGS;
6255
6256 /* Emulate vfork() with fork() */
6257 if (flags & CLONE_VFORK)
6258 flags &= ~(CLONE_VFORK | CLONE_VM);
6259
6260 if (flags & CLONE_VM) {
6261 TaskState *parent_ts = (TaskState *)cpu->opaque;
6262 new_thread_info info;
6263 pthread_attr_t attr;
6264
6265 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6266 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6267 return -TARGET_EINVAL;
6268 }
6269
6270 ts = g_new0(TaskState, 1);
6271 init_task_state(ts);
6272 /* we create a new CPU instance. */
6273 new_env = cpu_copy(env);
6274 /* Init regs that differ from the parent. */
6275 cpu_clone_regs(new_env, newsp);
6276 new_cpu = ENV_GET_CPU(new_env);
6277 new_cpu->opaque = ts;
6278 ts->bprm = parent_ts->bprm;
6279 ts->info = parent_ts->info;
6280 ts->signal_mask = parent_ts->signal_mask;
6281
6282 if (flags & CLONE_CHILD_CLEARTID) {
6283 ts->child_tidptr = child_tidptr;
6284 }
6285
6286 if (flags & CLONE_SETTLS) {
6287 cpu_set_tls (new_env, newtls);
6288 }
6289
6290 /* Grab a mutex so that thread setup appears atomic. */
6291 pthread_mutex_lock(&clone_lock);
6292
6293 memset(&info, 0, sizeof(info));
6294 pthread_mutex_init(&info.mutex, NULL);
6295 pthread_mutex_lock(&info.mutex);
6296 pthread_cond_init(&info.cond, NULL);
6297 info.env = new_env;
6298 if (flags & CLONE_CHILD_SETTID) {
6299 info.child_tidptr = child_tidptr;
6300 }
6301 if (flags & CLONE_PARENT_SETTID) {
6302 info.parent_tidptr = parent_tidptr;
6303 }
6304
6305 ret = pthread_attr_init(&attr);
6306 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6307 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6308 /* It is not safe to deliver signals until the child has finished
6309 initializing, so temporarily block all signals. */
6310 sigfillset(&sigmask);
6311 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6312
6313 /* If this is our first additional thread, we need to ensure we
6314 * generate code for parallel execution and flush old translations.
6315 */
6316 if (!parallel_cpus) {
6317 parallel_cpus = true;
6318 tb_flush(cpu);
6319 }
6320
6321 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6322 /* TODO: Free new CPU state if thread creation failed. */
6323
6324 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6325 pthread_attr_destroy(&attr);
6326 if (ret == 0) {
6327 /* Wait for the child to initialize. */
6328 pthread_cond_wait(&info.cond, &info.mutex);
6329 ret = info.tid;
6330 } else {
6331 ret = -1;
6332 }
6333 pthread_mutex_unlock(&info.mutex);
6334 pthread_cond_destroy(&info.cond);
6335 pthread_mutex_destroy(&info.mutex);
6336 pthread_mutex_unlock(&clone_lock);
6337 } else {
6338 /* if no CLONE_VM, we consider it is a fork */
6339 if (flags & CLONE_INVALID_FORK_FLAGS) {
6340 return -TARGET_EINVAL;
6341 }
6342
6343 /* We can't support custom termination signals */
6344 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6345 return -TARGET_EINVAL;
6346 }
6347
6348 if (block_signals()) {
6349 return -TARGET_ERESTARTSYS;
6350 }
6351
6352 fork_start();
6353 ret = fork();
6354 if (ret == 0) {
6355 /* Child Process. */
6356 rcu_after_fork();
6357 cpu_clone_regs(env, newsp);
6358 fork_end(1);
6359 /* There is a race condition here. The parent process could
6360 theoretically read the TID in the child process before the child
6361 tid is set. This would require using either ptrace
6362 (not implemented) or having *_tidptr to point at a shared memory
6363 mapping. We can't repeat the spinlock hack used above because
6364 the child process gets its own copy of the lock. */
6365 if (flags & CLONE_CHILD_SETTID)
6366 put_user_u32(gettid(), child_tidptr);
6367 if (flags & CLONE_PARENT_SETTID)
6368 put_user_u32(gettid(), parent_tidptr);
6369 ts = (TaskState *)cpu->opaque;
6370 if (flags & CLONE_SETTLS)
6371 cpu_set_tls (env, newtls);
6372 if (flags & CLONE_CHILD_CLEARTID)
6373 ts->child_tidptr = child_tidptr;
6374 } else {
6375 fork_end(0);
6376 }
6377 }
6378 return ret;
6379 }
6380
6381 /* warning : doesn't handle linux specific flags... */
6382 static int target_to_host_fcntl_cmd(int cmd)
6383 {
6384 switch(cmd) {
6385 case TARGET_F_DUPFD:
6386 case TARGET_F_GETFD:
6387 case TARGET_F_SETFD:
6388 case TARGET_F_GETFL:
6389 case TARGET_F_SETFL:
6390 return cmd;
6391 case TARGET_F_GETLK:
6392 return F_GETLK64;
6393 case TARGET_F_SETLK:
6394 return F_SETLK64;
6395 case TARGET_F_SETLKW:
6396 return F_SETLKW64;
6397 case TARGET_F_GETOWN:
6398 return F_GETOWN;
6399 case TARGET_F_SETOWN:
6400 return F_SETOWN;
6401 case TARGET_F_GETSIG:
6402 return F_GETSIG;
6403 case TARGET_F_SETSIG:
6404 return F_SETSIG;
6405 #if TARGET_ABI_BITS == 32
6406 case TARGET_F_GETLK64:
6407 return F_GETLK64;
6408 case TARGET_F_SETLK64:
6409 return F_SETLK64;
6410 case TARGET_F_SETLKW64:
6411 return F_SETLKW64;
6412 #endif
6413 case TARGET_F_SETLEASE:
6414 return F_SETLEASE;
6415 case TARGET_F_GETLEASE:
6416 return F_GETLEASE;
6417 #ifdef F_DUPFD_CLOEXEC
6418 case TARGET_F_DUPFD_CLOEXEC:
6419 return F_DUPFD_CLOEXEC;
6420 #endif
6421 case TARGET_F_NOTIFY:
6422 return F_NOTIFY;
6423 #ifdef F_GETOWN_EX
6424 case TARGET_F_GETOWN_EX:
6425 return F_GETOWN_EX;
6426 #endif
6427 #ifdef F_SETOWN_EX
6428 case TARGET_F_SETOWN_EX:
6429 return F_SETOWN_EX;
6430 #endif
6431 #ifdef F_SETPIPE_SZ
6432 case TARGET_F_SETPIPE_SZ:
6433 return F_SETPIPE_SZ;
6434 case TARGET_F_GETPIPE_SZ:
6435 return F_GETPIPE_SZ;
6436 #endif
6437 default:
6438 return -TARGET_EINVAL;
6439 }
6440 return -TARGET_EINVAL;
6441 }
6442
6443 #define TRANSTBL_CONVERT(a) { -1, TARGET_##a, -1, a }
6444 static const bitmask_transtbl flock_tbl[] = {
6445 TRANSTBL_CONVERT(F_RDLCK),
6446 TRANSTBL_CONVERT(F_WRLCK),
6447 TRANSTBL_CONVERT(F_UNLCK),
6448 TRANSTBL_CONVERT(F_EXLCK),
6449 TRANSTBL_CONVERT(F_SHLCK),
6450 { 0, 0, 0, 0 }
6451 };
6452
6453 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6454 abi_ulong target_flock_addr)
6455 {
6456 struct target_flock *target_fl;
6457 short l_type;
6458
6459 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6460 return -TARGET_EFAULT;
6461 }
6462
6463 __get_user(l_type, &target_fl->l_type);
6464 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6465 __get_user(fl->l_whence, &target_fl->l_whence);
6466 __get_user(fl->l_start, &target_fl->l_start);
6467 __get_user(fl->l_len, &target_fl->l_len);
6468 __get_user(fl->l_pid, &target_fl->l_pid);
6469 unlock_user_struct(target_fl, target_flock_addr, 0);
6470 return 0;
6471 }
6472
6473 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6474 const struct flock64 *fl)
6475 {
6476 struct target_flock *target_fl;
6477 short l_type;
6478
6479 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6480 return -TARGET_EFAULT;
6481 }
6482
6483 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6484 __put_user(l_type, &target_fl->l_type);
6485 __put_user(fl->l_whence, &target_fl->l_whence);
6486 __put_user(fl->l_start, &target_fl->l_start);
6487 __put_user(fl->l_len, &target_fl->l_len);
6488 __put_user(fl->l_pid, &target_fl->l_pid);
6489 unlock_user_struct(target_fl, target_flock_addr, 1);
6490 return 0;
6491 }
6492
6493 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6494 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6495
6496 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6497 static inline abi_long copy_from_user_eabi_flock64(struct flock64 *fl,
6498 abi_ulong target_flock_addr)
6499 {
6500 struct target_eabi_flock64 *target_fl;
6501 short l_type;
6502
6503 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6504 return -TARGET_EFAULT;
6505 }
6506
6507 __get_user(l_type, &target_fl->l_type);
6508 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6509 __get_user(fl->l_whence, &target_fl->l_whence);
6510 __get_user(fl->l_start, &target_fl->l_start);
6511 __get_user(fl->l_len, &target_fl->l_len);
6512 __get_user(fl->l_pid, &target_fl->l_pid);
6513 unlock_user_struct(target_fl, target_flock_addr, 0);
6514 return 0;
6515 }
6516
6517 static inline abi_long copy_to_user_eabi_flock64(abi_ulong target_flock_addr,
6518 const struct flock64 *fl)
6519 {
6520 struct target_eabi_flock64 *target_fl;
6521 short l_type;
6522
6523 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6524 return -TARGET_EFAULT;
6525 }
6526
6527 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6528 __put_user(l_type, &target_fl->l_type);
6529 __put_user(fl->l_whence, &target_fl->l_whence);
6530 __put_user(fl->l_start, &target_fl->l_start);
6531 __put_user(fl->l_len, &target_fl->l_len);
6532 __put_user(fl->l_pid, &target_fl->l_pid);
6533 unlock_user_struct(target_fl, target_flock_addr, 1);
6534 return 0;
6535 }
6536 #endif
6537
6538 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6539 abi_ulong target_flock_addr)
6540 {
6541 struct target_flock64 *target_fl;
6542 short l_type;
6543
6544 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6545 return -TARGET_EFAULT;
6546 }
6547
6548 __get_user(l_type, &target_fl->l_type);
6549 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6550 __get_user(fl->l_whence, &target_fl->l_whence);
6551 __get_user(fl->l_start, &target_fl->l_start);
6552 __get_user(fl->l_len, &target_fl->l_len);
6553 __get_user(fl->l_pid, &target_fl->l_pid);
6554 unlock_user_struct(target_fl, target_flock_addr, 0);
6555 return 0;
6556 }
6557
6558 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6559 const struct flock64 *fl)
6560 {
6561 struct target_flock64 *target_fl;
6562 short l_type;
6563
6564 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6565 return -TARGET_EFAULT;
6566 }
6567
6568 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6569 __put_user(l_type, &target_fl->l_type);
6570 __put_user(fl->l_whence, &target_fl->l_whence);
6571 __put_user(fl->l_start, &target_fl->l_start);
6572 __put_user(fl->l_len, &target_fl->l_len);
6573 __put_user(fl->l_pid, &target_fl->l_pid);
6574 unlock_user_struct(target_fl, target_flock_addr, 1);
6575 return 0;
6576 }
6577
6578 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6579 {
6580 struct flock64 fl64;
6581 #ifdef F_GETOWN_EX
6582 struct f_owner_ex fox;
6583 struct target_f_owner_ex *target_fox;
6584 #endif
6585 abi_long ret;
6586 int host_cmd = target_to_host_fcntl_cmd(cmd);
6587
6588 if (host_cmd == -TARGET_EINVAL)
6589 return host_cmd;
6590
6591 switch(cmd) {
6592 case TARGET_F_GETLK:
6593 ret = copy_from_user_flock(&fl64, arg);
6594 if (ret) {
6595 return ret;
6596 }
6597 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6598 if (ret == 0) {
6599 ret = copy_to_user_flock(arg, &fl64);
6600 }
6601 break;
6602
6603 case TARGET_F_SETLK:
6604 case TARGET_F_SETLKW:
6605 ret = copy_from_user_flock(&fl64, arg);
6606 if (ret) {
6607 return ret;
6608 }
6609 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6610 break;
6611
6612 case TARGET_F_GETLK64:
6613 ret = copy_from_user_flock64(&fl64, arg);
6614 if (ret) {
6615 return ret;
6616 }
6617 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6618 if (ret == 0) {
6619 ret = copy_to_user_flock64(arg, &fl64);
6620 }
6621 break;
6622 case TARGET_F_SETLK64:
6623 case TARGET_F_SETLKW64:
6624 ret = copy_from_user_flock64(&fl64, arg);
6625 if (ret) {
6626 return ret;
6627 }
6628 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6629 break;
6630
6631 case TARGET_F_GETFL:
6632 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6633 if (ret >= 0) {
6634 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
6635 }
6636 break;
6637
6638 case TARGET_F_SETFL:
6639 ret = get_errno(safe_fcntl(fd, host_cmd,
6640 target_to_host_bitmask(arg,
6641 fcntl_flags_tbl)));
6642 break;
6643
6644 #ifdef F_GETOWN_EX
6645 case TARGET_F_GETOWN_EX:
6646 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6647 if (ret >= 0) {
6648 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
6649 return -TARGET_EFAULT;
6650 target_fox->type = tswap32(fox.type);
6651 target_fox->pid = tswap32(fox.pid);
6652 unlock_user_struct(target_fox, arg, 1);
6653 }
6654 break;
6655 #endif
6656
6657 #ifdef F_SETOWN_EX
6658 case TARGET_F_SETOWN_EX:
6659 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
6660 return -TARGET_EFAULT;
6661 fox.type = tswap32(target_fox->type);
6662 fox.pid = tswap32(target_fox->pid);
6663 unlock_user_struct(target_fox, arg, 0);
6664 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6665 break;
6666 #endif
6667
6668 case TARGET_F_SETOWN:
6669 case TARGET_F_GETOWN:
6670 case TARGET_F_SETSIG:
6671 case TARGET_F_GETSIG:
6672 case TARGET_F_SETLEASE:
6673 case TARGET_F_GETLEASE:
6674 case TARGET_F_SETPIPE_SZ:
6675 case TARGET_F_GETPIPE_SZ:
6676 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6677 break;
6678
6679 default:
6680 ret = get_errno(safe_fcntl(fd, cmd, arg));
6681 break;
6682 }
6683 return ret;
6684 }
6685
6686 #ifdef USE_UID16
6687
6688 static inline int high2lowuid(int uid)
6689 {
6690 if (uid > 65535)
6691 return 65534;
6692 else
6693 return uid;
6694 }
6695
6696 static inline int high2lowgid(int gid)
6697 {
6698 if (gid > 65535)
6699 return 65534;
6700 else
6701 return gid;
6702 }
6703
6704 static inline int low2highuid(int uid)
6705 {
6706 if ((int16_t)uid == -1)
6707 return -1;
6708 else
6709 return uid;
6710 }
6711
6712 static inline int low2highgid(int gid)
6713 {
6714 if ((int16_t)gid == -1)
6715 return -1;
6716 else
6717 return gid;
6718 }
6719 static inline int tswapid(int id)
6720 {
6721 return tswap16(id);
6722 }
6723
6724 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6725
6726 #else /* !USE_UID16 */
6727 static inline int high2lowuid(int uid)
6728 {
6729 return uid;
6730 }
6731 static inline int high2lowgid(int gid)
6732 {
6733 return gid;
6734 }
6735 static inline int low2highuid(int uid)
6736 {
6737 return uid;
6738 }
6739 static inline int low2highgid(int gid)
6740 {
6741 return gid;
6742 }
6743 static inline int tswapid(int id)
6744 {
6745 return tswap32(id);
6746 }
6747
6748 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6749
6750 #endif /* USE_UID16 */
6751
6752 /* We must do direct syscalls for setting UID/GID, because we want to
6753 * implement the Linux system call semantics of "change only for this thread",
6754 * not the libc/POSIX semantics of "change for all threads in process".
6755 * (See http://ewontfix.com/17/ for more details.)
6756 * We use the 32-bit version of the syscalls if present; if it is not
6757 * then either the host architecture supports 32-bit UIDs natively with
6758 * the standard syscall, or the 16-bit UID is the best we can do.
6759 */
6760 #ifdef __NR_setuid32
6761 #define __NR_sys_setuid __NR_setuid32
6762 #else
6763 #define __NR_sys_setuid __NR_setuid
6764 #endif
6765 #ifdef __NR_setgid32
6766 #define __NR_sys_setgid __NR_setgid32
6767 #else
6768 #define __NR_sys_setgid __NR_setgid
6769 #endif
6770 #ifdef __NR_setresuid32
6771 #define __NR_sys_setresuid __NR_setresuid32
6772 #else
6773 #define __NR_sys_setresuid __NR_setresuid
6774 #endif
6775 #ifdef __NR_setresgid32
6776 #define __NR_sys_setresgid __NR_setresgid32
6777 #else
6778 #define __NR_sys_setresgid __NR_setresgid
6779 #endif
6780
6781 _syscall1(int, sys_setuid, uid_t, uid)
6782 _syscall1(int, sys_setgid, gid_t, gid)
6783 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6784 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
6785
6786 void syscall_init(void)
6787 {
6788 IOCTLEntry *ie;
6789 const argtype *arg_type;
6790 int size;
6791 int i;
6792
6793 thunk_init(STRUCT_MAX);
6794
6795 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
6796 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
6797 #include "syscall_types.h"
6798 #undef STRUCT
6799 #undef STRUCT_SPECIAL
6800
6801 /* Build target_to_host_errno_table[] table from
6802 * host_to_target_errno_table[]. */
6803 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
6804 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
6805 }
6806
6807 /* we patch the ioctl size if necessary. We rely on the fact that
6808 no ioctl has all the bits at '1' in the size field */
6809 ie = ioctl_entries;
6810 while (ie->target_cmd != 0) {
6811 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
6812 TARGET_IOC_SIZEMASK) {
6813 arg_type = ie->arg_type;
6814 if (arg_type[0] != TYPE_PTR) {
6815 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
6816 ie->target_cmd);
6817 exit(1);
6818 }
6819 arg_type++;
6820 size = thunk_type_size(arg_type, 0);
6821 ie->target_cmd = (ie->target_cmd &
6822 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
6823 (size << TARGET_IOC_SIZESHIFT);
6824 }
6825
6826 /* automatic consistency check if same arch */
6827 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
6828 (defined(__x86_64__) && defined(TARGET_X86_64))
6829 if (unlikely(ie->target_cmd != ie->host_cmd)) {
6830 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
6831 ie->name, ie->target_cmd, ie->host_cmd);
6832 }
6833 #endif
6834 ie++;
6835 }
6836 }
6837
6838 #if TARGET_ABI_BITS == 32
6839 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
6840 {
6841 #ifdef TARGET_WORDS_BIGENDIAN
6842 return ((uint64_t)word0 << 32) | word1;
6843 #else
6844 return ((uint64_t)word1 << 32) | word0;
6845 #endif
6846 }
6847 #else /* TARGET_ABI_BITS == 32 */
6848 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
6849 {
6850 return word0;
6851 }
6852 #endif /* TARGET_ABI_BITS != 32 */
6853
6854 #ifdef TARGET_NR_truncate64
6855 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
6856 abi_long arg2,
6857 abi_long arg3,
6858 abi_long arg4)
6859 {
6860 if (regpairs_aligned(cpu_env)) {
6861 arg2 = arg3;
6862 arg3 = arg4;
6863 }
6864 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
6865 }
6866 #endif
6867
6868 #ifdef TARGET_NR_ftruncate64
6869 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
6870 abi_long arg2,
6871 abi_long arg3,
6872 abi_long arg4)
6873 {
6874 if (regpairs_aligned(cpu_env)) {
6875 arg2 = arg3;
6876 arg3 = arg4;
6877 }
6878 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
6879 }
6880 #endif
6881
6882 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
6883 abi_ulong target_addr)
6884 {
6885 struct target_timespec *target_ts;
6886
6887 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1))
6888 return -TARGET_EFAULT;
6889 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
6890 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6891 unlock_user_struct(target_ts, target_addr, 0);
6892 return 0;
6893 }
6894
6895 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
6896 struct timespec *host_ts)
6897 {
6898 struct target_timespec *target_ts;
6899
6900 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0))
6901 return -TARGET_EFAULT;
6902 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
6903 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6904 unlock_user_struct(target_ts, target_addr, 1);
6905 return 0;
6906 }
6907
6908 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec,
6909 abi_ulong target_addr)
6910 {
6911 struct target_itimerspec *target_itspec;
6912
6913 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) {
6914 return -TARGET_EFAULT;
6915 }
6916
6917 host_itspec->it_interval.tv_sec =
6918 tswapal(target_itspec->it_interval.tv_sec);
6919 host_itspec->it_interval.tv_nsec =
6920 tswapal(target_itspec->it_interval.tv_nsec);
6921 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec);
6922 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec);
6923
6924 unlock_user_struct(target_itspec, target_addr, 1);
6925 return 0;
6926 }
6927
6928 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
6929 struct itimerspec *host_its)
6930 {
6931 struct target_itimerspec *target_itspec;
6932
6933 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) {
6934 return -TARGET_EFAULT;
6935 }
6936
6937 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec);
6938 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec);
6939
6940 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec);
6941 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec);
6942
6943 unlock_user_struct(target_itspec, target_addr, 0);
6944 return 0;
6945 }
6946
6947 static inline abi_long target_to_host_timex(struct timex *host_tx,
6948 abi_long target_addr)
6949 {
6950 struct target_timex *target_tx;
6951
6952 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
6953 return -TARGET_EFAULT;
6954 }
6955
6956 __get_user(host_tx->modes, &target_tx->modes);
6957 __get_user(host_tx->offset, &target_tx->offset);
6958 __get_user(host_tx->freq, &target_tx->freq);
6959 __get_user(host_tx->maxerror, &target_tx->maxerror);
6960 __get_user(host_tx->esterror, &target_tx->esterror);
6961 __get_user(host_tx->status, &target_tx->status);
6962 __get_user(host_tx->constant, &target_tx->constant);
6963 __get_user(host_tx->precision, &target_tx->precision);
6964 __get_user(host_tx->tolerance, &target_tx->tolerance);
6965 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6966 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6967 __get_user(host_tx->tick, &target_tx->tick);
6968 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6969 __get_user(host_tx->jitter, &target_tx->jitter);
6970 __get_user(host_tx->shift, &target_tx->shift);
6971 __get_user(host_tx->stabil, &target_tx->stabil);
6972 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
6973 __get_user(host_tx->calcnt, &target_tx->calcnt);
6974 __get_user(host_tx->errcnt, &target_tx->errcnt);
6975 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
6976 __get_user(host_tx->tai, &target_tx->tai);
6977
6978 unlock_user_struct(target_tx, target_addr, 0);
6979 return 0;
6980 }
6981
6982 static inline abi_long host_to_target_timex(abi_long target_addr,
6983 struct timex *host_tx)
6984 {
6985 struct target_timex *target_tx;
6986
6987 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
6988 return -TARGET_EFAULT;
6989 }
6990
6991 __put_user(host_tx->modes, &target_tx->modes);
6992 __put_user(host_tx->offset, &target_tx->offset);
6993 __put_user(host_tx->freq, &target_tx->freq);
6994 __put_user(host_tx->maxerror, &target_tx->maxerror);
6995 __put_user(host_tx->esterror, &target_tx->esterror);
6996 __put_user(host_tx->status, &target_tx->status);
6997 __put_user(host_tx->constant, &target_tx->constant);
6998 __put_user(host_tx->precision, &target_tx->precision);
6999 __put_user(host_tx->tolerance, &target_tx->tolerance);
7000 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7001 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7002 __put_user(host_tx->tick, &target_tx->tick);
7003 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7004 __put_user(host_tx->jitter, &target_tx->jitter);
7005 __put_user(host_tx->shift, &target_tx->shift);
7006 __put_user(host_tx->stabil, &target_tx->stabil);
7007 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7008 __put_user(host_tx->calcnt, &target_tx->calcnt);
7009 __put_user(host_tx->errcnt, &target_tx->errcnt);
7010 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7011 __put_user(host_tx->tai, &target_tx->tai);
7012
7013 unlock_user_struct(target_tx, target_addr, 1);
7014 return 0;
7015 }
7016
7017
7018 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
7019 abi_ulong target_addr)
7020 {
7021 struct target_sigevent *target_sevp;
7022
7023 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
7024 return -TARGET_EFAULT;
7025 }
7026
7027 /* This union is awkward on 64 bit systems because it has a 32 bit
7028 * integer and a pointer in it; we follow the conversion approach
7029 * used for handling sigval types in signal.c so the guest should get
7030 * the correct value back even if we did a 64 bit byteswap and it's
7031 * using the 32 bit integer.
7032 */
7033 host_sevp->sigev_value.sival_ptr =
7034 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
7035 host_sevp->sigev_signo =
7036 target_to_host_signal(tswap32(target_sevp->sigev_signo));
7037 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
7038 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
7039
7040 unlock_user_struct(target_sevp, target_addr, 1);
7041 return 0;
7042 }
7043
7044 #if defined(TARGET_NR_mlockall)
7045 static inline int target_to_host_mlockall_arg(int arg)
7046 {
7047 int result = 0;
7048
7049 if (arg & TARGET_MLOCKALL_MCL_CURRENT) {
7050 result |= MCL_CURRENT;
7051 }
7052 if (arg & TARGET_MLOCKALL_MCL_FUTURE) {
7053 result |= MCL_FUTURE;
7054 }
7055 return result;
7056 }
7057 #endif
7058
7059 static inline abi_long host_to_target_stat64(void *cpu_env,
7060 abi_ulong target_addr,
7061 struct stat *host_st)
7062 {
7063 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
7064 if (((CPUARMState *)cpu_env)->eabi) {
7065 struct target_eabi_stat64 *target_st;
7066
7067 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7068 return -TARGET_EFAULT;
7069 memset(target_st, 0, sizeof(struct target_eabi_stat64));
7070 __put_user(host_st->st_dev, &target_st->st_dev);
7071 __put_user(host_st->st_ino, &target_st->st_ino);
7072 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7073 __put_user(host_st->st_ino, &target_st->__st_ino);
7074 #endif
7075 __put_user(host_st->st_mode, &target_st->st_mode);
7076 __put_user(host_st->st_nlink, &target_st->st_nlink);
7077 __put_user(host_st->st_uid, &target_st->st_uid);
7078 __put_user(host_st->st_gid, &target_st->st_gid);
7079 __put_user(host_st->st_rdev, &target_st->st_rdev);
7080 __put_user(host_st->st_size, &target_st->st_size);
7081 __put_user(host_st->st_blksize, &target_st->st_blksize);
7082 __put_user(host_st->st_blocks, &target_st->st_blocks);
7083 __put_user(host_st->st_atime, &target_st->target_st_atime);
7084 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7085 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7086 unlock_user_struct(target_st, target_addr, 1);
7087 } else
7088 #endif
7089 {
7090 #if defined(TARGET_HAS_STRUCT_STAT64)
7091 struct target_stat64 *target_st;
7092 #else
7093 struct target_stat *target_st;
7094 #endif
7095
7096 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7097 return -TARGET_EFAULT;
7098 memset(target_st, 0, sizeof(*target_st));
7099 __put_user(host_st->st_dev, &target_st->st_dev);
7100 __put_user(host_st->st_ino, &target_st->st_ino);
7101 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7102 __put_user(host_st->st_ino, &target_st->__st_ino);
7103 #endif
7104 __put_user(host_st->st_mode, &target_st->st_mode);
7105 __put_user(host_st->st_nlink, &target_st->st_nlink);
7106 __put_user(host_st->st_uid, &target_st->st_uid);
7107 __put_user(host_st->st_gid, &target_st->st_gid);
7108 __put_user(host_st->st_rdev, &target_st->st_rdev);
7109 /* XXX: better use of kernel struct */
7110 __put_user(host_st->st_size, &target_st->st_size);
7111 __put_user(host_st->st_blksize, &target_st->st_blksize);
7112 __put_user(host_st->st_blocks, &target_st->st_blocks);
7113 __put_user(host_st->st_atime, &target_st->target_st_atime);
7114 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7115 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7116 unlock_user_struct(target_st, target_addr, 1);
7117 }
7118
7119 return 0;
7120 }
7121
7122 /* ??? Using host futex calls even when target atomic operations
7123 are not really atomic probably breaks things. However implementing
7124 futexes locally would make futexes shared between multiple processes
7125 tricky. However they're probably useless because guest atomic
7126 operations won't work either. */
7127 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
7128 target_ulong uaddr2, int val3)
7129 {
7130 struct timespec ts, *pts;
7131 int base_op;
7132
7133 /* ??? We assume FUTEX_* constants are the same on both host
7134 and target. */
7135 #ifdef FUTEX_CMD_MASK
7136 base_op = op & FUTEX_CMD_MASK;
7137 #else
7138 base_op = op;
7139 #endif
7140 switch (base_op) {
7141 case FUTEX_WAIT:
7142 case FUTEX_WAIT_BITSET:
7143 if (timeout) {
7144 pts = &ts;
7145 target_to_host_timespec(pts, timeout);
7146 } else {
7147 pts = NULL;
7148 }
7149 return get_errno(safe_futex(g2h(uaddr), op, tswap32(val),
7150 pts, NULL, val3));
7151 case FUTEX_WAKE:
7152 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
7153 case FUTEX_FD:
7154 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
7155 case FUTEX_REQUEUE:
7156 case FUTEX_CMP_REQUEUE:
7157 case FUTEX_WAKE_OP:
7158 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7159 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7160 But the prototype takes a `struct timespec *'; insert casts
7161 to satisfy the compiler. We do not need to tswap TIMEOUT
7162 since it's not compared to guest memory. */
7163 pts = (struct timespec *)(uintptr_t) timeout;
7164 return get_errno(safe_futex(g2h(uaddr), op, val, pts,
7165 g2h(uaddr2),
7166 (base_op == FUTEX_CMP_REQUEUE
7167 ? tswap32(val3)
7168 : val3)));
7169 default:
7170 return -TARGET_ENOSYS;
7171 }
7172 }
7173 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7174 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7175 abi_long handle, abi_long mount_id,
7176 abi_long flags)
7177 {
7178 struct file_handle *target_fh;
7179 struct file_handle *fh;
7180 int mid = 0;
7181 abi_long ret;
7182 char *name;
7183 unsigned int size, total_size;
7184
7185 if (get_user_s32(size, handle)) {
7186 return -TARGET_EFAULT;
7187 }
7188
7189 name = lock_user_string(pathname);
7190 if (!name) {
7191 return -TARGET_EFAULT;
7192 }
7193
7194 total_size = sizeof(struct file_handle) + size;
7195 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7196 if (!target_fh) {
7197 unlock_user(name, pathname, 0);
7198 return -TARGET_EFAULT;
7199 }
7200
7201 fh = g_malloc0(total_size);
7202 fh->handle_bytes = size;
7203
7204 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7205 unlock_user(name, pathname, 0);
7206
7207 /* man name_to_handle_at(2):
7208 * Other than the use of the handle_bytes field, the caller should treat
7209 * the file_handle structure as an opaque data type
7210 */
7211
7212 memcpy(target_fh, fh, total_size);
7213 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7214 target_fh->handle_type = tswap32(fh->handle_type);
7215 g_free(fh);
7216 unlock_user(target_fh, handle, total_size);
7217
7218 if (put_user_s32(mid, mount_id)) {
7219 return -TARGET_EFAULT;
7220 }
7221
7222 return ret;
7223
7224 }
7225 #endif
7226
7227 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7228 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7229 abi_long flags)
7230 {
7231 struct file_handle *target_fh;
7232 struct file_handle *fh;
7233 unsigned int size, total_size;
7234 abi_long ret;
7235
7236 if (get_user_s32(size, handle)) {
7237 return -TARGET_EFAULT;
7238 }
7239
7240 total_size = sizeof(struct file_handle) + size;
7241 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7242 if (!target_fh) {
7243 return -TARGET_EFAULT;
7244 }
7245
7246 fh = g_memdup(target_fh, total_size);
7247 fh->handle_bytes = size;
7248 fh->handle_type = tswap32(target_fh->handle_type);
7249
7250 ret = get_errno(open_by_handle_at(mount_fd, fh,
7251 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7252
7253 g_free(fh);
7254
7255 unlock_user(target_fh, handle, total_size);
7256
7257 return ret;
7258 }
7259 #endif
7260
7261 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7262
7263 /* signalfd siginfo conversion */
7264
7265 static void
7266 host_to_target_signalfd_siginfo(struct signalfd_siginfo *tinfo,
7267 const struct signalfd_siginfo *info)
7268 {
7269 int sig = host_to_target_signal(info->ssi_signo);
7270
7271 /* linux/signalfd.h defines a ssi_addr_lsb
7272 * not defined in sys/signalfd.h but used by some kernels
7273 */
7274
7275 #ifdef BUS_MCEERR_AO
7276 if (tinfo->ssi_signo == SIGBUS &&
7277 (tinfo->ssi_code == BUS_MCEERR_AR ||
7278 tinfo->ssi_code == BUS_MCEERR_AO)) {
7279 uint16_t *ssi_addr_lsb = (uint16_t *)(&info->ssi_addr + 1);
7280 uint16_t *tssi_addr_lsb = (uint16_t *)(&tinfo->ssi_addr + 1);
7281 *tssi_addr_lsb = tswap16(*ssi_addr_lsb);
7282 }
7283 #endif
7284
7285 tinfo->ssi_signo = tswap32(sig);
7286 tinfo->ssi_errno = tswap32(tinfo->ssi_errno);
7287 tinfo->ssi_code = tswap32(info->ssi_code);
7288 tinfo->ssi_pid = tswap32(info->ssi_pid);
7289 tinfo->ssi_uid = tswap32(info->ssi_uid);
7290 tinfo->ssi_fd = tswap32(info->ssi_fd);
7291 tinfo->ssi_tid = tswap32(info->ssi_tid);
7292 tinfo->ssi_band = tswap32(info->ssi_band);
7293 tinfo->ssi_overrun = tswap32(info->ssi_overrun);
7294 tinfo->ssi_trapno = tswap32(info->ssi_trapno);
7295 tinfo->ssi_status = tswap32(info->ssi_status);
7296 tinfo->ssi_int = tswap32(info->ssi_int);
7297 tinfo->ssi_ptr = tswap64(info->ssi_ptr);
7298 tinfo->ssi_utime = tswap64(info->ssi_utime);
7299 tinfo->ssi_stime = tswap64(info->ssi_stime);
7300 tinfo->ssi_addr = tswap64(info->ssi_addr);
7301 }
7302
7303 static abi_long host_to_target_data_signalfd(void *buf, size_t len)
7304 {
7305 int i;
7306
7307 for (i = 0; i < len; i += sizeof(struct signalfd_siginfo)) {
7308 host_to_target_signalfd_siginfo(buf + i, buf + i);
7309 }
7310
7311 return len;
7312 }
7313
7314 static TargetFdTrans target_signalfd_trans = {
7315 .host_to_target_data = host_to_target_data_signalfd,
7316 };
7317
7318 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7319 {
7320 int host_flags;
7321 target_sigset_t *target_mask;
7322 sigset_t host_mask;
7323 abi_long ret;
7324
7325 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
7326 return -TARGET_EINVAL;
7327 }
7328 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7329 return -TARGET_EFAULT;
7330 }
7331
7332 target_to_host_sigset(&host_mask, target_mask);
7333
7334 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7335
7336 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7337 if (ret >= 0) {
7338 fd_trans_register(ret, &target_signalfd_trans);
7339 }
7340
7341 unlock_user_struct(target_mask, mask, 0);
7342
7343 return ret;
7344 }
7345 #endif
7346
7347 /* Map host to target signal numbers for the wait family of syscalls.
7348 Assume all other status bits are the same. */
7349 int host_to_target_waitstatus(int status)
7350 {
7351 if (WIFSIGNALED(status)) {
7352 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7353 }
7354 if (WIFSTOPPED(status)) {
7355 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7356 | (status & 0xff);
7357 }
7358 return status;
7359 }
7360
7361 static int open_self_cmdline(void *cpu_env, int fd)
7362 {
7363 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7364 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
7365 int i;
7366
7367 for (i = 0; i < bprm->argc; i++) {
7368 size_t len = strlen(bprm->argv[i]) + 1;
7369
7370 if (write(fd, bprm->argv[i], len) != len) {
7371 return -1;
7372 }
7373 }
7374
7375 return 0;
7376 }
7377
7378 static int open_self_maps(void *cpu_env, int fd)
7379 {
7380 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7381 TaskState *ts = cpu->opaque;
7382 FILE *fp;
7383 char *line = NULL;
7384 size_t len = 0;
7385 ssize_t read;
7386
7387 fp = fopen("/proc/self/maps", "r");
7388 if (fp == NULL) {
7389 return -1;
7390 }
7391
7392 while ((read = getline(&line, &len, fp)) != -1) {
7393 int fields, dev_maj, dev_min, inode;
7394 uint64_t min, max, offset;
7395 char flag_r, flag_w, flag_x, flag_p;
7396 char path[512] = "";
7397 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
7398 " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
7399 &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
7400
7401 if ((fields < 10) || (fields > 11)) {
7402 continue;
7403 }
7404 if (h2g_valid(min)) {
7405 int flags = page_get_flags(h2g(min));
7406 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX);
7407 if (page_check_range(h2g(min), max - min, flags) == -1) {
7408 continue;
7409 }
7410 if (h2g(min) == ts->info->stack_limit) {
7411 pstrcpy(path, sizeof(path), " [stack]");
7412 }
7413 dprintf(fd, TARGET_ABI_FMT_lx "-" TARGET_ABI_FMT_lx
7414 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
7415 h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
7416 flag_x, flag_p, offset, dev_maj, dev_min, inode,
7417 path[0] ? " " : "", path);
7418 }
7419 }
7420
7421 free(line);
7422 fclose(fp);
7423
7424 return 0;
7425 }
7426
7427 static int open_self_stat(void *cpu_env, int fd)
7428 {
7429 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7430 TaskState *ts = cpu->opaque;
7431 abi_ulong start_stack = ts->info->start_stack;
7432 int i;
7433
7434 for (i = 0; i < 44; i++) {
7435 char buf[128];
7436 int len;
7437 uint64_t val = 0;
7438
7439 if (i == 0) {
7440 /* pid */
7441 val = getpid();
7442 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
7443 } else if (i == 1) {
7444 /* app name */
7445 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
7446 } else if (i == 27) {
7447 /* stack bottom */
7448 val = start_stack;
7449 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
7450 } else {
7451 /* for the rest, there is MasterCard */
7452 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
7453 }
7454
7455 len = strlen(buf);
7456 if (write(fd, buf, len) != len) {
7457 return -1;
7458 }
7459 }
7460
7461 return 0;
7462 }
7463
7464 static int open_self_auxv(void *cpu_env, int fd)
7465 {
7466 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7467 TaskState *ts = cpu->opaque;
7468 abi_ulong auxv = ts->info->saved_auxv;
7469 abi_ulong len = ts->info->auxv_len;
7470 char *ptr;
7471
7472 /*
7473 * Auxiliary vector is stored in target process stack.
7474 * read in whole auxv vector and copy it to file
7475 */
7476 ptr = lock_user(VERIFY_READ, auxv, len, 0);
7477 if (ptr != NULL) {
7478 while (len > 0) {
7479 ssize_t r;
7480 r = write(fd, ptr, len);
7481 if (r <= 0) {
7482 break;
7483 }
7484 len -= r;
7485 ptr += r;
7486 }
7487 lseek(fd, 0, SEEK_SET);
7488 unlock_user(ptr, auxv, len);
7489 }
7490
7491 return 0;
7492 }
7493
7494 static int is_proc_myself(const char *filename, const char *entry)
7495 {
7496 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
7497 filename += strlen("/proc/");
7498 if (!strncmp(filename, "self/", strlen("self/"))) {
7499 filename += strlen("self/");
7500 } else if (*filename >= '1' && *filename <= '9') {
7501 char myself[80];
7502 snprintf(myself, sizeof(myself), "%d/", getpid());
7503 if (!strncmp(filename, myself, strlen(myself))) {
7504 filename += strlen(myself);
7505 } else {
7506 return 0;
7507 }
7508 } else {
7509 return 0;
7510 }
7511 if (!strcmp(filename, entry)) {
7512 return 1;
7513 }
7514 }
7515 return 0;
7516 }
7517
7518 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7519 static int is_proc(const char *filename, const char *entry)
7520 {
7521 return strcmp(filename, entry) == 0;
7522 }
7523
7524 static int open_net_route(void *cpu_env, int fd)
7525 {
7526 FILE *fp;
7527 char *line = NULL;
7528 size_t len = 0;
7529 ssize_t read;
7530
7531 fp = fopen("/proc/net/route", "r");
7532 if (fp == NULL) {
7533 return -1;
7534 }
7535
7536 /* read header */
7537
7538 read = getline(&line, &len, fp);
7539 dprintf(fd, "%s", line);
7540
7541 /* read routes */
7542
7543 while ((read = getline(&line, &len, fp)) != -1) {
7544 char iface[16];
7545 uint32_t dest, gw, mask;
7546 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
7547 sscanf(line, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7548 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
7549 &mask, &mtu, &window, &irtt);
7550 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7551 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
7552 metric, tswap32(mask), mtu, window, irtt);
7553 }
7554
7555 free(line);
7556 fclose(fp);
7557
7558 return 0;
7559 }
7560 #endif
7561
7562 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
7563 {
7564 struct fake_open {
7565 const char *filename;
7566 int (*fill)(void *cpu_env, int fd);
7567 int (*cmp)(const char *s1, const char *s2);
7568 };
7569 const struct fake_open *fake_open;
7570 static const struct fake_open fakes[] = {
7571 { "maps", open_self_maps, is_proc_myself },
7572 { "stat", open_self_stat, is_proc_myself },
7573 { "auxv", open_self_auxv, is_proc_myself },
7574 { "cmdline", open_self_cmdline, is_proc_myself },
7575 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7576 { "/proc/net/route", open_net_route, is_proc },
7577 #endif
7578 { NULL, NULL, NULL }
7579 };
7580
7581 if (is_proc_myself(pathname, "exe")) {
7582 int execfd = qemu_getauxval(AT_EXECFD);
7583 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
7584 }
7585
7586 for (fake_open = fakes; fake_open->filename; fake_open++) {
7587 if (fake_open->cmp(pathname, fake_open->filename)) {
7588 break;
7589 }
7590 }
7591
7592 if (fake_open->filename) {
7593 const char *tmpdir;
7594 char filename[PATH_MAX];
7595 int fd, r;
7596
7597 /* create temporary file to map stat to */
7598 tmpdir = getenv("TMPDIR");
7599 if (!tmpdir)
7600 tmpdir = "/tmp";
7601 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
7602 fd = mkstemp(filename);
7603 if (fd < 0) {
7604 return fd;
7605 }
7606 unlink(filename);
7607
7608 if ((r = fake_open->fill(cpu_env, fd))) {
7609 int e = errno;
7610 close(fd);
7611 errno = e;
7612 return r;
7613 }
7614 lseek(fd, 0, SEEK_SET);
7615
7616 return fd;
7617 }
7618
7619 return safe_openat(dirfd, path(pathname), flags, mode);
7620 }
7621
7622 #define TIMER_MAGIC 0x0caf0000
7623 #define TIMER_MAGIC_MASK 0xffff0000
7624
7625 /* Convert QEMU provided timer ID back to internal 16bit index format */
7626 static target_timer_t get_timer_id(abi_long arg)
7627 {
7628 target_timer_t timerid = arg;
7629
7630 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
7631 return -TARGET_EINVAL;
7632 }
7633
7634 timerid &= 0xffff;
7635
7636 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
7637 return -TARGET_EINVAL;
7638 }
7639
7640 return timerid;
7641 }
7642
7643 static abi_long swap_data_eventfd(void *buf, size_t len)
7644 {
7645 uint64_t *counter = buf;
7646 int i;
7647
7648 if (len < sizeof(uint64_t)) {
7649 return -EINVAL;
7650 }
7651
7652 for (i = 0; i < len; i += sizeof(uint64_t)) {
7653 *counter = tswap64(*counter);
7654 counter++;
7655 }
7656
7657 return len;
7658 }
7659
7660 static TargetFdTrans target_eventfd_trans = {
7661 .host_to_target_data = swap_data_eventfd,
7662 .target_to_host_data = swap_data_eventfd,
7663 };
7664
7665 #if (defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)) || \
7666 (defined(CONFIG_INOTIFY1) && defined(TARGET_NR_inotify_init1) && \
7667 defined(__NR_inotify_init1))
7668 static abi_long host_to_target_data_inotify(void *buf, size_t len)
7669 {
7670 struct inotify_event *ev;
7671 int i;
7672 uint32_t name_len;
7673
7674 for (i = 0; i < len; i += sizeof(struct inotify_event) + name_len) {
7675 ev = (struct inotify_event *)((char *)buf + i);
7676 name_len = ev->len;
7677
7678 ev->wd = tswap32(ev->wd);
7679 ev->mask = tswap32(ev->mask);
7680 ev->cookie = tswap32(ev->cookie);
7681 ev->len = tswap32(name_len);
7682 }
7683
7684 return len;
7685 }
7686
7687 static TargetFdTrans target_inotify_trans = {
7688 .host_to_target_data = host_to_target_data_inotify,
7689 };
7690 #endif
7691
7692 /* do_syscall() should always have a single exit point at the end so
7693 that actions, such as logging of syscall results, can be performed.
7694 All errnos that do_syscall() returns must be -TARGET_<errcode>. */
7695 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
7696 abi_long arg2, abi_long arg3, abi_long arg4,
7697 abi_long arg5, abi_long arg6, abi_long arg7,
7698 abi_long arg8)
7699 {
7700 CPUState *cpu = ENV_GET_CPU(cpu_env);
7701 abi_long ret;
7702 struct stat st;
7703 struct statfs stfs;
7704 void *p;
7705
7706 #if defined(DEBUG_ERESTARTSYS)
7707 /* Debug-only code for exercising the syscall-restart code paths
7708 * in the per-architecture cpu main loops: restart every syscall
7709 * the guest makes once before letting it through.
7710 */
7711 {
7712 static int flag;
7713
7714 flag = !flag;
7715 if (flag) {
7716 return -TARGET_ERESTARTSYS;
7717 }
7718 }
7719 #endif
7720
7721 #ifdef DEBUG
7722 gemu_log("syscall %d", num);
7723 #endif
7724 trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
7725 if(do_strace)
7726 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
7727
7728 switch(num) {
7729 case TARGET_NR_exit:
7730 /* In old applications this may be used to implement _exit(2).
7731 However in threaded applictions it is used for thread termination,
7732 and _exit_group is used for application termination.
7733 Do thread termination if we have more then one thread. */
7734
7735 if (block_signals()) {
7736 ret = -TARGET_ERESTARTSYS;
7737 break;
7738 }
7739
7740 cpu_list_lock();
7741
7742 if (CPU_NEXT(first_cpu)) {
7743 TaskState *ts;
7744
7745 /* Remove the CPU from the list. */
7746 QTAILQ_REMOVE(&cpus, cpu, node);
7747
7748 cpu_list_unlock();
7749
7750 ts = cpu->opaque;
7751 if (ts->child_tidptr) {
7752 put_user_u32(0, ts->child_tidptr);
7753 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
7754 NULL, NULL, 0);
7755 }
7756 thread_cpu = NULL;
7757 object_unref(OBJECT(cpu));
7758 g_free(ts);
7759 rcu_unregister_thread();
7760 pthread_exit(NULL);
7761 }
7762
7763 cpu_list_unlock();
7764 #ifdef TARGET_GPROF
7765 _mcleanup();
7766 #endif
7767 gdb_exit(cpu_env, arg1);
7768 _exit(arg1);
7769 ret = 0; /* avoid warning */
7770 break;
7771 case TARGET_NR_read:
7772 if (arg3 == 0)
7773 ret = 0;
7774 else {
7775 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
7776 goto efault;
7777 ret = get_errno(safe_read(arg1, p, arg3));
7778 if (ret >= 0 &&
7779 fd_trans_host_to_target_data(arg1)) {
7780 ret = fd_trans_host_to_target_data(arg1)(p, ret);
7781 }
7782 unlock_user(p, arg2, ret);
7783 }
7784 break;
7785 case TARGET_NR_write:
7786 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
7787 goto efault;
7788 if (fd_trans_target_to_host_data(arg1)) {
7789 void *copy = g_malloc(arg3);
7790 memcpy(copy, p, arg3);
7791 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
7792 if (ret >= 0) {
7793 ret = get_errno(safe_write(arg1, copy, ret));
7794 }
7795 g_free(copy);
7796 } else {
7797 ret = get_errno(safe_write(arg1, p, arg3));
7798 }
7799 unlock_user(p, arg2, 0);
7800 break;
7801 #ifdef TARGET_NR_open
7802 case TARGET_NR_open:
7803 if (!(p = lock_user_string(arg1)))
7804 goto efault;
7805 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
7806 target_to_host_bitmask(arg2, fcntl_flags_tbl),
7807 arg3));
7808 fd_trans_unregister(ret);
7809 unlock_user(p, arg1, 0);
7810 break;
7811 #endif
7812 case TARGET_NR_openat:
7813 if (!(p = lock_user_string(arg2)))
7814 goto efault;
7815 ret = get_errno(do_openat(cpu_env, arg1, p,
7816 target_to_host_bitmask(arg3, fcntl_flags_tbl),
7817 arg4));
7818 fd_trans_unregister(ret);
7819 unlock_user(p, arg2, 0);
7820 break;
7821 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7822 case TARGET_NR_name_to_handle_at:
7823 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
7824 break;
7825 #endif
7826 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7827 case TARGET_NR_open_by_handle_at:
7828 ret = do_open_by_handle_at(arg1, arg2, arg3);
7829 fd_trans_unregister(ret);
7830 break;
7831 #endif
7832 case TARGET_NR_close:
7833 fd_trans_unregister(arg1);
7834 ret = get_errno(close(arg1));
7835 break;
7836 case TARGET_NR_brk:
7837 ret = do_brk(arg1);
7838 break;
7839 #ifdef TARGET_NR_fork
7840 case TARGET_NR_fork:
7841 ret = get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
7842 break;
7843 #endif
7844 #ifdef TARGET_NR_waitpid
7845 case TARGET_NR_waitpid:
7846 {
7847 int status;
7848 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
7849 if (!is_error(ret) && arg2 && ret
7850 && put_user_s32(host_to_target_waitstatus(status), arg2))
7851 goto efault;
7852 }
7853 break;
7854 #endif
7855 #ifdef TARGET_NR_waitid
7856 case TARGET_NR_waitid:
7857 {
7858 siginfo_t info;
7859 info.si_pid = 0;
7860 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
7861 if (!is_error(ret) && arg3 && info.si_pid != 0) {
7862 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
7863 goto efault;
7864 host_to_target_siginfo(p, &info);
7865 unlock_user(p, arg3, sizeof(target_siginfo_t));
7866 }
7867 }
7868 break;
7869 #endif
7870 #ifdef TARGET_NR_creat /* not on alpha */
7871 case TARGET_NR_creat:
7872 if (!(p = lock_user_string(arg1)))
7873 goto efault;
7874 ret = get_errno(creat(p, arg2));
7875 fd_trans_unregister(ret);
7876 unlock_user(p, arg1, 0);
7877 break;
7878 #endif
7879 #ifdef TARGET_NR_link
7880 case TARGET_NR_link:
7881 {
7882 void * p2;
7883 p = lock_user_string(arg1);
7884 p2 = lock_user_string(arg2);
7885 if (!p || !p2)
7886 ret = -TARGET_EFAULT;
7887 else
7888 ret = get_errno(link(p, p2));
7889 unlock_user(p2, arg2, 0);
7890 unlock_user(p, arg1, 0);
7891 }
7892 break;
7893 #endif
7894 #if defined(TARGET_NR_linkat)
7895 case TARGET_NR_linkat:
7896 {
7897 void * p2 = NULL;
7898 if (!arg2 || !arg4)
7899 goto efault;
7900 p = lock_user_string(arg2);
7901 p2 = lock_user_string(arg4);
7902 if (!p || !p2)
7903 ret = -TARGET_EFAULT;
7904 else
7905 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
7906 unlock_user(p, arg2, 0);
7907 unlock_user(p2, arg4, 0);
7908 }
7909 break;
7910 #endif
7911 #ifdef TARGET_NR_unlink
7912 case TARGET_NR_unlink:
7913 if (!(p = lock_user_string(arg1)))
7914 goto efault;
7915 ret = get_errno(unlink(p));
7916 unlock_user(p, arg1, 0);
7917 break;
7918 #endif
7919 #if defined(TARGET_NR_unlinkat)
7920 case TARGET_NR_unlinkat:
7921 if (!(p = lock_user_string(arg2)))
7922 goto efault;
7923 ret = get_errno(unlinkat(arg1, p, arg3));
7924 unlock_user(p, arg2, 0);
7925 break;
7926 #endif
7927 case TARGET_NR_execve:
7928 {
7929 char **argp, **envp;
7930 int argc, envc;
7931 abi_ulong gp;
7932 abi_ulong guest_argp;
7933 abi_ulong guest_envp;
7934 abi_ulong addr;
7935 char **q;
7936 int total_size = 0;
7937
7938 argc = 0;
7939 guest_argp = arg2;
7940 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
7941 if (get_user_ual(addr, gp))
7942 goto efault;
7943 if (!addr)
7944 break;
7945 argc++;
7946 }
7947 envc = 0;
7948 guest_envp = arg3;
7949 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
7950 if (get_user_ual(addr, gp))
7951 goto efault;
7952 if (!addr)
7953 break;
7954 envc++;
7955 }
7956
7957 argp = g_new0(char *, argc + 1);
7958 envp = g_new0(char *, envc + 1);
7959
7960 for (gp = guest_argp, q = argp; gp;
7961 gp += sizeof(abi_ulong), q++) {
7962 if (get_user_ual(addr, gp))
7963 goto execve_efault;
7964 if (!addr)
7965 break;
7966 if (!(*q = lock_user_string(addr)))
7967 goto execve_efault;
7968 total_size += strlen(*q) + 1;
7969 }
7970 *q = NULL;
7971
7972 for (gp = guest_envp, q = envp; gp;
7973 gp += sizeof(abi_ulong), q++) {
7974 if (get_user_ual(addr, gp))
7975 goto execve_efault;
7976 if (!addr)
7977 break;
7978 if (!(*q = lock_user_string(addr)))
7979 goto execve_efault;
7980 total_size += strlen(*q) + 1;
7981 }
7982 *q = NULL;
7983
7984 if (!(p = lock_user_string(arg1)))
7985 goto execve_efault;
7986 /* Although execve() is not an interruptible syscall it is
7987 * a special case where we must use the safe_syscall wrapper:
7988 * if we allow a signal to happen before we make the host
7989 * syscall then we will 'lose' it, because at the point of
7990 * execve the process leaves QEMU's control. So we use the
7991 * safe syscall wrapper to ensure that we either take the
7992 * signal as a guest signal, or else it does not happen
7993 * before the execve completes and makes it the other
7994 * program's problem.
7995 */
7996 ret = get_errno(safe_execve(p, argp, envp));
7997 unlock_user(p, arg1, 0);
7998
7999 goto execve_end;
8000
8001 execve_efault:
8002 ret = -TARGET_EFAULT;
8003
8004 execve_end:
8005 for (gp = guest_argp, q = argp; *q;
8006 gp += sizeof(abi_ulong), q++) {
8007 if (get_user_ual(addr, gp)
8008 || !addr)
8009 break;
8010 unlock_user(*q, addr, 0);
8011 }
8012 for (gp = guest_envp, q = envp; *q;
8013 gp += sizeof(abi_ulong), q++) {
8014 if (get_user_ual(addr, gp)
8015 || !addr)
8016 break;
8017 unlock_user(*q, addr, 0);
8018 }
8019
8020 g_free(argp);
8021 g_free(envp);
8022 }
8023 break;
8024 case TARGET_NR_chdir:
8025 if (!(p = lock_user_string(arg1)))
8026 goto efault;
8027 ret = get_errno(chdir(p));
8028 unlock_user(p, arg1, 0);
8029 break;
8030 #ifdef TARGET_NR_time
8031 case TARGET_NR_time:
8032 {
8033 time_t host_time;
8034 ret = get_errno(time(&host_time));
8035 if (!is_error(ret)
8036 && arg1
8037 && put_user_sal(host_time, arg1))
8038 goto efault;
8039 }
8040 break;
8041 #endif
8042 #ifdef TARGET_NR_mknod
8043 case TARGET_NR_mknod:
8044 if (!(p = lock_user_string(arg1)))
8045 goto efault;
8046 ret = get_errno(mknod(p, arg2, arg3));
8047 unlock_user(p, arg1, 0);
8048 break;
8049 #endif
8050 #if defined(TARGET_NR_mknodat)
8051 case TARGET_NR_mknodat:
8052 if (!(p = lock_user_string(arg2)))
8053 goto efault;
8054 ret = get_errno(mknodat(arg1, p, arg3, arg4));
8055 unlock_user(p, arg2, 0);
8056 break;
8057 #endif
8058 #ifdef TARGET_NR_chmod
8059 case TARGET_NR_chmod:
8060 if (!(p = lock_user_string(arg1)))
8061 goto efault;
8062 ret = get_errno(chmod(p, arg2));
8063 unlock_user(p, arg1, 0);
8064 break;
8065 #endif
8066 #ifdef TARGET_NR_break
8067 case TARGET_NR_break:
8068 goto unimplemented;
8069 #endif
8070 #ifdef TARGET_NR_oldstat
8071 case TARGET_NR_oldstat:
8072 goto unimplemented;
8073 #endif
8074 case TARGET_NR_lseek:
8075 ret = get_errno(lseek(arg1, arg2, arg3));
8076 break;
8077 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
8078 /* Alpha specific */
8079 case TARGET_NR_getxpid:
8080 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
8081 ret = get_errno(getpid());
8082 break;
8083 #endif
8084 #ifdef TARGET_NR_getpid
8085 case TARGET_NR_getpid:
8086 ret = get_errno(getpid());
8087 break;
8088 #endif
8089 case TARGET_NR_mount:
8090 {
8091 /* need to look at the data field */
8092 void *p2, *p3;
8093
8094 if (arg1) {
8095 p = lock_user_string(arg1);
8096 if (!p) {
8097 goto efault;
8098 }
8099 } else {
8100 p = NULL;
8101 }
8102
8103 p2 = lock_user_string(arg2);
8104 if (!p2) {
8105 if (arg1) {
8106 unlock_user(p, arg1, 0);
8107 }
8108 goto efault;
8109 }
8110
8111 if (arg3) {
8112 p3 = lock_user_string(arg3);
8113 if (!p3) {
8114 if (arg1) {
8115 unlock_user(p, arg1, 0);
8116 }
8117 unlock_user(p2, arg2, 0);
8118 goto efault;
8119 }
8120 } else {
8121 p3 = NULL;
8122 }
8123
8124 /* FIXME - arg5 should be locked, but it isn't clear how to
8125 * do that since it's not guaranteed to be a NULL-terminated
8126 * string.
8127 */
8128 if (!arg5) {
8129 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
8130 } else {
8131 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
8132 }
8133 ret = get_errno(ret);
8134
8135 if (arg1) {
8136 unlock_user(p, arg1, 0);
8137 }
8138 unlock_user(p2, arg2, 0);
8139 if (arg3) {
8140 unlock_user(p3, arg3, 0);
8141 }
8142 }
8143 break;
8144 #ifdef TARGET_NR_umount
8145 case TARGET_NR_umount:
8146 if (!(p = lock_user_string(arg1)))
8147 goto efault;
8148 ret = get_errno(umount(p));
8149 unlock_user(p, arg1, 0);
8150 break;
8151 #endif
8152 #ifdef TARGET_NR_stime /* not on alpha */
8153 case TARGET_NR_stime:
8154 {
8155 time_t host_time;
8156 if (get_user_sal(host_time, arg1))
8157 goto efault;
8158 ret = get_errno(stime(&host_time));
8159 }
8160 break;
8161 #endif
8162 case TARGET_NR_ptrace:
8163 goto unimplemented;
8164 #ifdef TARGET_NR_alarm /* not on alpha */
8165 case TARGET_NR_alarm:
8166 ret = alarm(arg1);
8167 break;
8168 #endif
8169 #ifdef TARGET_NR_oldfstat
8170 case TARGET_NR_oldfstat:
8171 goto unimplemented;
8172 #endif
8173 #ifdef TARGET_NR_pause /* not on alpha */
8174 case TARGET_NR_pause:
8175 if (!block_signals()) {
8176 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
8177 }
8178 ret = -TARGET_EINTR;
8179 break;
8180 #endif
8181 #ifdef TARGET_NR_utime
8182 case TARGET_NR_utime:
8183 {
8184 struct utimbuf tbuf, *host_tbuf;
8185 struct target_utimbuf *target_tbuf;
8186 if (arg2) {
8187 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
8188 goto efault;
8189 tbuf.actime = tswapal(target_tbuf->actime);
8190 tbuf.modtime = tswapal(target_tbuf->modtime);
8191 unlock_user_struct(target_tbuf, arg2, 0);
8192 host_tbuf = &tbuf;
8193 } else {
8194 host_tbuf = NULL;
8195 }
8196 if (!(p = lock_user_string(arg1)))
8197 goto efault;
8198 ret = get_errno(utime(p, host_tbuf));
8199 unlock_user(p, arg1, 0);
8200 }
8201 break;
8202 #endif
8203 #ifdef TARGET_NR_utimes
8204 case TARGET_NR_utimes:
8205 {
8206 struct timeval *tvp, tv[2];
8207 if (arg2) {
8208 if (copy_from_user_timeval(&tv[0], arg2)
8209 || copy_from_user_timeval(&tv[1],
8210 arg2 + sizeof(struct target_timeval)))
8211 goto efault;
8212 tvp = tv;
8213 } else {
8214 tvp = NULL;
8215 }
8216 if (!(p = lock_user_string(arg1)))
8217 goto efault;
8218 ret = get_errno(utimes(p, tvp));
8219 unlock_user(p, arg1, 0);
8220 }
8221 break;
8222 #endif
8223 #if defined(TARGET_NR_futimesat)
8224 case TARGET_NR_futimesat:
8225 {
8226 struct timeval *tvp, tv[2];
8227 if (arg3) {
8228 if (copy_from_user_timeval(&tv[0], arg3)
8229 || copy_from_user_timeval(&tv[1],
8230 arg3 + sizeof(struct target_timeval)))
8231 goto efault;
8232 tvp = tv;
8233 } else {
8234 tvp = NULL;
8235 }
8236 if (!(p = lock_user_string(arg2)))
8237 goto efault;
8238 ret = get_errno(futimesat(arg1, path(p), tvp));
8239 unlock_user(p, arg2, 0);
8240 }
8241 break;
8242 #endif
8243 #ifdef TARGET_NR_stty
8244 case TARGET_NR_stty:
8245 goto unimplemented;
8246 #endif
8247 #ifdef TARGET_NR_gtty
8248 case TARGET_NR_gtty:
8249 goto unimplemented;
8250 #endif
8251 #ifdef TARGET_NR_access
8252 case TARGET_NR_access:
8253 if (!(p = lock_user_string(arg1)))
8254 goto efault;
8255 ret = get_errno(access(path(p), arg2));
8256 unlock_user(p, arg1, 0);
8257 break;
8258 #endif
8259 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
8260 case TARGET_NR_faccessat:
8261 if (!(p = lock_user_string(arg2)))
8262 goto efault;
8263 ret = get_errno(faccessat(arg1, p, arg3, 0));
8264 unlock_user(p, arg2, 0);
8265 break;
8266 #endif
8267 #ifdef TARGET_NR_nice /* not on alpha */
8268 case TARGET_NR_nice:
8269 ret = get_errno(nice(arg1));
8270 break;
8271 #endif
8272 #ifdef TARGET_NR_ftime
8273 case TARGET_NR_ftime:
8274 goto unimplemented;
8275 #endif
8276 case TARGET_NR_sync:
8277 sync();
8278 ret = 0;
8279 break;
8280 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
8281 case TARGET_NR_syncfs:
8282 ret = get_errno(syncfs(arg1));
8283 break;
8284 #endif
8285 case TARGET_NR_kill:
8286 ret = get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
8287 break;
8288 #ifdef TARGET_NR_rename
8289 case TARGET_NR_rename:
8290 {
8291 void *p2;
8292 p = lock_user_string(arg1);
8293 p2 = lock_user_string(arg2);
8294 if (!p || !p2)
8295 ret = -TARGET_EFAULT;
8296 else
8297 ret = get_errno(rename(p, p2));
8298 unlock_user(p2, arg2, 0);
8299 unlock_user(p, arg1, 0);
8300 }
8301 break;
8302 #endif
8303 #if defined(TARGET_NR_renameat)
8304 case TARGET_NR_renameat:
8305 {
8306 void *p2;
8307 p = lock_user_string(arg2);
8308 p2 = lock_user_string(arg4);
8309 if (!p || !p2)
8310 ret = -TARGET_EFAULT;
8311 else
8312 ret = get_errno(renameat(arg1, p, arg3, p2));
8313 unlock_user(p2, arg4, 0);
8314 unlock_user(p, arg2, 0);
8315 }
8316 break;
8317 #endif
8318 #ifdef TARGET_NR_mkdir
8319 case TARGET_NR_mkdir:
8320 if (!(p = lock_user_string(arg1)))
8321 goto efault;
8322 ret = get_errno(mkdir(p, arg2));
8323 unlock_user(p, arg1, 0);
8324 break;
8325 #endif
8326 #if defined(TARGET_NR_mkdirat)
8327 case TARGET_NR_mkdirat:
8328 if (!(p = lock_user_string(arg2)))
8329 goto efault;
8330 ret = get_errno(mkdirat(arg1, p, arg3));
8331 unlock_user(p, arg2, 0);
8332 break;
8333 #endif
8334 #ifdef TARGET_NR_rmdir
8335 case TARGET_NR_rmdir:
8336 if (!(p = lock_user_string(arg1)))
8337 goto efault;
8338 ret = get_errno(rmdir(p));
8339 unlock_user(p, arg1, 0);
8340 break;
8341 #endif
8342 case TARGET_NR_dup:
8343 ret = get_errno(dup(arg1));
8344 if (ret >= 0) {
8345 fd_trans_dup(arg1, ret);
8346 }
8347 break;
8348 #ifdef TARGET_NR_pipe
8349 case TARGET_NR_pipe:
8350 ret = do_pipe(cpu_env, arg1, 0, 0);
8351 break;
8352 #endif
8353 #ifdef TARGET_NR_pipe2
8354 case TARGET_NR_pipe2:
8355 ret = do_pipe(cpu_env, arg1,
8356 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
8357 break;
8358 #endif
8359 case TARGET_NR_times:
8360 {
8361 struct target_tms *tmsp;
8362 struct tms tms;
8363 ret = get_errno(times(&tms));
8364 if (arg1) {
8365 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
8366 if (!tmsp)
8367 goto efault;
8368 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
8369 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
8370 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
8371 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
8372 }
8373 if (!is_error(ret))
8374 ret = host_to_target_clock_t(ret);
8375 }
8376 break;
8377 #ifdef TARGET_NR_prof
8378 case TARGET_NR_prof:
8379 goto unimplemented;
8380 #endif
8381 #ifdef TARGET_NR_signal
8382 case TARGET_NR_signal:
8383 goto unimplemented;
8384 #endif
8385 case TARGET_NR_acct:
8386 if (arg1 == 0) {
8387 ret = get_errno(acct(NULL));
8388 } else {
8389 if (!(p = lock_user_string(arg1)))
8390 goto efault;
8391 ret = get_errno(acct(path(p)));
8392 unlock_user(p, arg1, 0);
8393 }
8394 break;
8395 #ifdef TARGET_NR_umount2
8396 case TARGET_NR_umount2:
8397 if (!(p = lock_user_string(arg1)))
8398 goto efault;
8399 ret = get_errno(umount2(p, arg2));
8400 unlock_user(p, arg1, 0);
8401 break;
8402 #endif
8403 #ifdef TARGET_NR_lock
8404 case TARGET_NR_lock:
8405 goto unimplemented;
8406 #endif
8407 case TARGET_NR_ioctl:
8408 ret = do_ioctl(arg1, arg2, arg3);
8409 break;
8410 case TARGET_NR_fcntl:
8411 ret = do_fcntl(arg1, arg2, arg3);
8412 break;
8413 #ifdef TARGET_NR_mpx
8414 case TARGET_NR_mpx:
8415 goto unimplemented;
8416 #endif
8417 case TARGET_NR_setpgid:
8418 ret = get_errno(setpgid(arg1, arg2));
8419 break;
8420 #ifdef TARGET_NR_ulimit
8421 case TARGET_NR_ulimit:
8422 goto unimplemented;
8423 #endif
8424 #ifdef TARGET_NR_oldolduname
8425 case TARGET_NR_oldolduname:
8426 goto unimplemented;
8427 #endif
8428 case TARGET_NR_umask:
8429 ret = get_errno(umask(arg1));
8430 break;
8431 case TARGET_NR_chroot:
8432 if (!(p = lock_user_string(arg1)))
8433 goto efault;
8434 ret = get_errno(chroot(p));
8435 unlock_user(p, arg1, 0);
8436 break;
8437 #ifdef TARGET_NR_ustat
8438 case TARGET_NR_ustat:
8439 goto unimplemented;
8440 #endif
8441 #ifdef TARGET_NR_dup2
8442 case TARGET_NR_dup2:
8443 ret = get_errno(dup2(arg1, arg2));
8444 if (ret >= 0) {
8445 fd_trans_dup(arg1, arg2);
8446 }
8447 break;
8448 #endif
8449 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
8450 case TARGET_NR_dup3:
8451 ret = get_errno(dup3(arg1, arg2, arg3));
8452 if (ret >= 0) {
8453 fd_trans_dup(arg1, arg2);
8454 }
8455 break;
8456 #endif
8457 #ifdef TARGET_NR_getppid /* not on alpha */
8458 case TARGET_NR_getppid:
8459 ret = get_errno(getppid());
8460 break;
8461 #endif
8462 #ifdef TARGET_NR_getpgrp
8463 case TARGET_NR_getpgrp:
8464 ret = get_errno(getpgrp());
8465 break;
8466 #endif
8467 case TARGET_NR_setsid:
8468 ret = get_errno(setsid());
8469 break;
8470 #ifdef TARGET_NR_sigaction
8471 case TARGET_NR_sigaction:
8472 {
8473 #if defined(TARGET_ALPHA)
8474 struct target_sigaction act, oact, *pact = 0;
8475 struct target_old_sigaction *old_act;
8476 if (arg2) {
8477 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8478 goto efault;
8479 act._sa_handler = old_act->_sa_handler;
8480 target_siginitset(&act.sa_mask, old_act->sa_mask);
8481 act.sa_flags = old_act->sa_flags;
8482 act.sa_restorer = 0;
8483 unlock_user_struct(old_act, arg2, 0);
8484 pact = &act;
8485 }
8486 ret = get_errno(do_sigaction(arg1, pact, &oact));
8487 if (!is_error(ret) && arg3) {
8488 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8489 goto efault;
8490 old_act->_sa_handler = oact._sa_handler;
8491 old_act->sa_mask = oact.sa_mask.sig[0];
8492 old_act->sa_flags = oact.sa_flags;
8493 unlock_user_struct(old_act, arg3, 1);
8494 }
8495 #elif defined(TARGET_MIPS)
8496 struct target_sigaction act, oact, *pact, *old_act;
8497
8498 if (arg2) {
8499 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8500 goto efault;
8501 act._sa_handler = old_act->_sa_handler;
8502 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
8503 act.sa_flags = old_act->sa_flags;
8504 unlock_user_struct(old_act, arg2, 0);
8505 pact = &act;
8506 } else {
8507 pact = NULL;
8508 }
8509
8510 ret = get_errno(do_sigaction(arg1, pact, &oact));
8511
8512 if (!is_error(ret) && arg3) {
8513 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8514 goto efault;
8515 old_act->_sa_handler = oact._sa_handler;
8516 old_act->sa_flags = oact.sa_flags;
8517 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
8518 old_act->sa_mask.sig[1] = 0;
8519 old_act->sa_mask.sig[2] = 0;
8520 old_act->sa_mask.sig[3] = 0;
8521 unlock_user_struct(old_act, arg3, 1);
8522 }
8523 #else
8524 struct target_old_sigaction *old_act;
8525 struct target_sigaction act, oact, *pact;
8526 if (arg2) {
8527 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8528 goto efault;
8529 act._sa_handler = old_act->_sa_handler;
8530 target_siginitset(&act.sa_mask, old_act->sa_mask);
8531 act.sa_flags = old_act->sa_flags;
8532 act.sa_restorer = old_act->sa_restorer;
8533 unlock_user_struct(old_act, arg2, 0);
8534 pact = &act;
8535 } else {
8536 pact = NULL;
8537 }
8538 ret = get_errno(do_sigaction(arg1, pact, &oact));
8539 if (!is_error(ret) && arg3) {
8540 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8541 goto efault;
8542 old_act->_sa_handler = oact._sa_handler;
8543 old_act->sa_mask = oact.sa_mask.sig[0];
8544 old_act->sa_flags = oact.sa_flags;
8545 old_act->sa_restorer = oact.sa_restorer;
8546 unlock_user_struct(old_act, arg3, 1);
8547 }
8548 #endif
8549 }
8550 break;
8551 #endif
8552 case TARGET_NR_rt_sigaction:
8553 {
8554 #if defined(TARGET_ALPHA)
8555 struct target_sigaction act, oact, *pact = 0;
8556 struct target_rt_sigaction *rt_act;
8557
8558 if (arg4 != sizeof(target_sigset_t)) {
8559 ret = -TARGET_EINVAL;
8560 break;
8561 }
8562 if (arg2) {
8563 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
8564 goto efault;
8565 act._sa_handler = rt_act->_sa_handler;
8566 act.sa_mask = rt_act->sa_mask;
8567 act.sa_flags = rt_act->sa_flags;
8568 act.sa_restorer = arg5;
8569 unlock_user_struct(rt_act, arg2, 0);
8570 pact = &act;
8571 }
8572 ret = get_errno(do_sigaction(arg1, pact, &oact));
8573 if (!is_error(ret) && arg3) {
8574 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
8575 goto efault;
8576 rt_act->_sa_handler = oact._sa_handler;
8577 rt_act->sa_mask = oact.sa_mask;
8578 rt_act->sa_flags = oact.sa_flags;
8579 unlock_user_struct(rt_act, arg3, 1);
8580 }
8581 #else
8582 struct target_sigaction *act;
8583 struct target_sigaction *oact;
8584
8585 if (arg4 != sizeof(target_sigset_t)) {
8586 ret = -TARGET_EINVAL;
8587 break;
8588 }
8589 if (arg2) {
8590 if (!lock_user_struct(VERIFY_READ, act, arg2, 1))
8591 goto efault;
8592 } else
8593 act = NULL;
8594 if (arg3) {
8595 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
8596 ret = -TARGET_EFAULT;
8597 goto rt_sigaction_fail;
8598 }
8599 } else
8600 oact = NULL;
8601 ret = get_errno(do_sigaction(arg1, act, oact));
8602 rt_sigaction_fail:
8603 if (act)
8604 unlock_user_struct(act, arg2, 0);
8605 if (oact)
8606 unlock_user_struct(oact, arg3, 1);
8607 #endif
8608 }
8609 break;
8610 #ifdef TARGET_NR_sgetmask /* not on alpha */
8611 case TARGET_NR_sgetmask:
8612 {
8613 sigset_t cur_set;
8614 abi_ulong target_set;
8615 ret = do_sigprocmask(0, NULL, &cur_set);
8616 if (!ret) {
8617 host_to_target_old_sigset(&target_set, &cur_set);
8618 ret = target_set;
8619 }
8620 }
8621 break;
8622 #endif
8623 #ifdef TARGET_NR_ssetmask /* not on alpha */
8624 case TARGET_NR_ssetmask:
8625 {
8626 sigset_t set, oset;
8627 abi_ulong target_set = arg1;
8628 target_to_host_old_sigset(&set, &target_set);
8629 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
8630 if (!ret) {
8631 host_to_target_old_sigset(&target_set, &oset);
8632 ret = target_set;
8633 }
8634 }
8635 break;
8636 #endif
8637 #ifdef TARGET_NR_sigprocmask
8638 case TARGET_NR_sigprocmask:
8639 {
8640 #if defined(TARGET_ALPHA)
8641 sigset_t set, oldset;
8642 abi_ulong mask;
8643 int how;
8644
8645 switch (arg1) {
8646 case TARGET_SIG_BLOCK:
8647 how = SIG_BLOCK;
8648 break;
8649 case TARGET_SIG_UNBLOCK:
8650 how = SIG_UNBLOCK;
8651 break;
8652 case TARGET_SIG_SETMASK:
8653 how = SIG_SETMASK;
8654 break;
8655 default:
8656 ret = -TARGET_EINVAL;
8657 goto fail;
8658 }
8659 mask = arg2;
8660 target_to_host_old_sigset(&set, &mask);
8661
8662 ret = do_sigprocmask(how, &set, &oldset);
8663 if (!is_error(ret)) {
8664 host_to_target_old_sigset(&mask, &oldset);
8665 ret = mask;
8666 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
8667 }
8668 #else
8669 sigset_t set, oldset, *set_ptr;
8670 int how;
8671
8672 if (arg2) {
8673 switch (arg1) {
8674 case TARGET_SIG_BLOCK:
8675 how = SIG_BLOCK;
8676 break;
8677 case TARGET_SIG_UNBLOCK:
8678 how = SIG_UNBLOCK;
8679 break;
8680 case TARGET_SIG_SETMASK:
8681 how = SIG_SETMASK;
8682 break;
8683 default:
8684 ret = -TARGET_EINVAL;
8685 goto fail;
8686 }
8687 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8688 goto efault;
8689 target_to_host_old_sigset(&set, p);
8690 unlock_user(p, arg2, 0);
8691 set_ptr = &set;
8692 } else {
8693 how = 0;
8694 set_ptr = NULL;
8695 }
8696 ret = do_sigprocmask(how, set_ptr, &oldset);
8697 if (!is_error(ret) && arg3) {
8698 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8699 goto efault;
8700 host_to_target_old_sigset(p, &oldset);
8701 unlock_user(p, arg3, sizeof(target_sigset_t));
8702 }
8703 #endif
8704 }
8705 break;
8706 #endif
8707 case TARGET_NR_rt_sigprocmask:
8708 {
8709 int how = arg1;
8710 sigset_t set, oldset, *set_ptr;
8711
8712 if (arg4 != sizeof(target_sigset_t)) {
8713 ret = -TARGET_EINVAL;
8714 break;
8715 }
8716
8717 if (arg2) {
8718 switch(how) {
8719 case TARGET_SIG_BLOCK:
8720 how = SIG_BLOCK;
8721 break;
8722 case TARGET_SIG_UNBLOCK:
8723 how = SIG_UNBLOCK;
8724 break;
8725 case TARGET_SIG_SETMASK:
8726 how = SIG_SETMASK;
8727 break;
8728 default:
8729 ret = -TARGET_EINVAL;
8730 goto fail;
8731 }
8732 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8733 goto efault;
8734 target_to_host_sigset(&set, p);
8735 unlock_user(p, arg2, 0);
8736 set_ptr = &set;
8737 } else {
8738 how = 0;
8739 set_ptr = NULL;
8740 }
8741 ret = do_sigprocmask(how, set_ptr, &oldset);
8742 if (!is_error(ret) && arg3) {
8743 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8744 goto efault;
8745 host_to_target_sigset(p, &oldset);
8746 unlock_user(p, arg3, sizeof(target_sigset_t));
8747 }
8748 }
8749 break;
8750 #ifdef TARGET_NR_sigpending
8751 case TARGET_NR_sigpending:
8752 {
8753 sigset_t set;
8754 ret = get_errno(sigpending(&set));
8755 if (!is_error(ret)) {
8756 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8757 goto efault;
8758 host_to_target_old_sigset(p, &set);
8759 unlock_user(p, arg1, sizeof(target_sigset_t));
8760 }
8761 }
8762 break;
8763 #endif
8764 case TARGET_NR_rt_sigpending:
8765 {
8766 sigset_t set;
8767
8768 /* Yes, this check is >, not != like most. We follow the kernel's
8769 * logic and it does it like this because it implements
8770 * NR_sigpending through the same code path, and in that case
8771 * the old_sigset_t is smaller in size.
8772 */
8773 if (arg2 > sizeof(target_sigset_t)) {
8774 ret = -TARGET_EINVAL;
8775 break;
8776 }
8777
8778 ret = get_errno(sigpending(&set));
8779 if (!is_error(ret)) {
8780 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8781 goto efault;
8782 host_to_target_sigset(p, &set);
8783 unlock_user(p, arg1, sizeof(target_sigset_t));
8784 }
8785 }
8786 break;
8787 #ifdef TARGET_NR_sigsuspend
8788 case TARGET_NR_sigsuspend:
8789 {
8790 TaskState *ts = cpu->opaque;
8791 #if defined(TARGET_ALPHA)
8792 abi_ulong mask = arg1;
8793 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
8794 #else
8795 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8796 goto efault;
8797 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
8798 unlock_user(p, arg1, 0);
8799 #endif
8800 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8801 SIGSET_T_SIZE));
8802 if (ret != -TARGET_ERESTARTSYS) {
8803 ts->in_sigsuspend = 1;
8804 }
8805 }
8806 break;
8807 #endif
8808 case TARGET_NR_rt_sigsuspend:
8809 {
8810 TaskState *ts = cpu->opaque;
8811
8812 if (arg2 != sizeof(target_sigset_t)) {
8813 ret = -TARGET_EINVAL;
8814 break;
8815 }
8816 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8817 goto efault;
8818 target_to_host_sigset(&ts->sigsuspend_mask, p);
8819 unlock_user(p, arg1, 0);
8820 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8821 SIGSET_T_SIZE));
8822 if (ret != -TARGET_ERESTARTSYS) {
8823 ts->in_sigsuspend = 1;
8824 }
8825 }
8826 break;
8827 case TARGET_NR_rt_sigtimedwait:
8828 {
8829 sigset_t set;
8830 struct timespec uts, *puts;
8831 siginfo_t uinfo;
8832
8833 if (arg4 != sizeof(target_sigset_t)) {
8834 ret = -TARGET_EINVAL;
8835 break;
8836 }
8837
8838 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8839 goto efault;
8840 target_to_host_sigset(&set, p);
8841 unlock_user(p, arg1, 0);
8842 if (arg3) {
8843 puts = &uts;
8844 target_to_host_timespec(puts, arg3);
8845 } else {
8846 puts = NULL;
8847 }
8848 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
8849 SIGSET_T_SIZE));
8850 if (!is_error(ret)) {
8851 if (arg2) {
8852 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
8853 0);
8854 if (!p) {
8855 goto efault;
8856 }
8857 host_to_target_siginfo(p, &uinfo);
8858 unlock_user(p, arg2, sizeof(target_siginfo_t));
8859 }
8860 ret = host_to_target_signal(ret);
8861 }
8862 }
8863 break;
8864 case TARGET_NR_rt_sigqueueinfo:
8865 {
8866 siginfo_t uinfo;
8867
8868 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8869 if (!p) {
8870 goto efault;
8871 }
8872 target_to_host_siginfo(&uinfo, p);
8873 unlock_user(p, arg3, 0);
8874 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
8875 }
8876 break;
8877 case TARGET_NR_rt_tgsigqueueinfo:
8878 {
8879 siginfo_t uinfo;
8880
8881 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
8882 if (!p) {
8883 goto efault;
8884 }
8885 target_to_host_siginfo(&uinfo, p);
8886 unlock_user(p, arg4, 0);
8887 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
8888 }
8889 break;
8890 #ifdef TARGET_NR_sigreturn
8891 case TARGET_NR_sigreturn:
8892 if (block_signals()) {
8893 ret = -TARGET_ERESTARTSYS;
8894 } else {
8895 ret = do_sigreturn(cpu_env);
8896 }
8897 break;
8898 #endif
8899 case TARGET_NR_rt_sigreturn:
8900 if (block_signals()) {
8901 ret = -TARGET_ERESTARTSYS;
8902 } else {
8903 ret = do_rt_sigreturn(cpu_env);
8904 }
8905 break;
8906 case TARGET_NR_sethostname:
8907 if (!(p = lock_user_string(arg1)))
8908 goto efault;
8909 ret = get_errno(sethostname(p, arg2));
8910 unlock_user(p, arg1, 0);
8911 break;
8912 case TARGET_NR_setrlimit:
8913 {
8914 int resource = target_to_host_resource(arg1);
8915 struct target_rlimit *target_rlim;
8916 struct rlimit rlim;
8917 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
8918 goto efault;
8919 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
8920 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
8921 unlock_user_struct(target_rlim, arg2, 0);
8922 ret = get_errno(setrlimit(resource, &rlim));
8923 }
8924 break;
8925 case TARGET_NR_getrlimit:
8926 {
8927 int resource = target_to_host_resource(arg1);
8928 struct target_rlimit *target_rlim;
8929 struct rlimit rlim;
8930
8931 ret = get_errno(getrlimit(resource, &rlim));
8932 if (!is_error(ret)) {
8933 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
8934 goto efault;
8935 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
8936 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
8937 unlock_user_struct(target_rlim, arg2, 1);
8938 }
8939 }
8940 break;
8941 case TARGET_NR_getrusage:
8942 {
8943 struct rusage rusage;
8944 ret = get_errno(getrusage(arg1, &rusage));
8945 if (!is_error(ret)) {
8946 ret = host_to_target_rusage(arg2, &rusage);
8947 }
8948 }
8949 break;
8950 case TARGET_NR_gettimeofday:
8951 {
8952 struct timeval tv;
8953 ret = get_errno(gettimeofday(&tv, NULL));
8954 if (!is_error(ret)) {
8955 if (copy_to_user_timeval(arg1, &tv))
8956 goto efault;
8957 }
8958 }
8959 break;
8960 case TARGET_NR_settimeofday:
8961 {
8962 struct timeval tv, *ptv = NULL;
8963 struct timezone tz, *ptz = NULL;
8964
8965 if (arg1) {
8966 if (copy_from_user_timeval(&tv, arg1)) {
8967 goto efault;
8968 }
8969 ptv = &tv;
8970 }
8971
8972 if (arg2) {
8973 if (copy_from_user_timezone(&tz, arg2)) {
8974 goto efault;
8975 }
8976 ptz = &tz;
8977 }
8978
8979 ret = get_errno(settimeofday(ptv, ptz));
8980 }
8981 break;
8982 #if defined(TARGET_NR_select)
8983 case TARGET_NR_select:
8984 #if defined(TARGET_WANT_NI_OLD_SELECT)
8985 /* some architectures used to have old_select here
8986 * but now ENOSYS it.
8987 */
8988 ret = -TARGET_ENOSYS;
8989 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
8990 ret = do_old_select(arg1);
8991 #else
8992 ret = do_select(arg1, arg2, arg3, arg4, arg5);
8993 #endif
8994 break;
8995 #endif
8996 #ifdef TARGET_NR_pselect6
8997 case TARGET_NR_pselect6:
8998 {
8999 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
9000 fd_set rfds, wfds, efds;
9001 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
9002 struct timespec ts, *ts_ptr;
9003
9004 /*
9005 * The 6th arg is actually two args smashed together,
9006 * so we cannot use the C library.
9007 */
9008 sigset_t set;
9009 struct {
9010 sigset_t *set;
9011 size_t size;
9012 } sig, *sig_ptr;
9013
9014 abi_ulong arg_sigset, arg_sigsize, *arg7;
9015 target_sigset_t *target_sigset;
9016
9017 n = arg1;
9018 rfd_addr = arg2;
9019 wfd_addr = arg3;
9020 efd_addr = arg4;
9021 ts_addr = arg5;
9022
9023 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
9024 if (ret) {
9025 goto fail;
9026 }
9027 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
9028 if (ret) {
9029 goto fail;
9030 }
9031 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
9032 if (ret) {
9033 goto fail;
9034 }
9035
9036 /*
9037 * This takes a timespec, and not a timeval, so we cannot
9038 * use the do_select() helper ...
9039 */
9040 if (ts_addr) {
9041 if (target_to_host_timespec(&ts, ts_addr)) {
9042 goto efault;
9043 }
9044 ts_ptr = &ts;
9045 } else {
9046 ts_ptr = NULL;
9047 }
9048
9049 /* Extract the two packed args for the sigset */
9050 if (arg6) {
9051 sig_ptr = &sig;
9052 sig.size = SIGSET_T_SIZE;
9053
9054 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
9055 if (!arg7) {
9056 goto efault;
9057 }
9058 arg_sigset = tswapal(arg7[0]);
9059 arg_sigsize = tswapal(arg7[1]);
9060 unlock_user(arg7, arg6, 0);
9061
9062 if (arg_sigset) {
9063 sig.set = &set;
9064 if (arg_sigsize != sizeof(*target_sigset)) {
9065 /* Like the kernel, we enforce correct size sigsets */
9066 ret = -TARGET_EINVAL;
9067 goto fail;
9068 }
9069 target_sigset = lock_user(VERIFY_READ, arg_sigset,
9070 sizeof(*target_sigset), 1);
9071 if (!target_sigset) {
9072 goto efault;
9073 }
9074 target_to_host_sigset(&set, target_sigset);
9075 unlock_user(target_sigset, arg_sigset, 0);
9076 } else {
9077 sig.set = NULL;
9078 }
9079 } else {
9080 sig_ptr = NULL;
9081 }
9082
9083 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
9084 ts_ptr, sig_ptr));
9085
9086 if (!is_error(ret)) {
9087 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
9088 goto efault;
9089 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
9090 goto efault;
9091 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
9092 goto efault;
9093
9094 if (ts_addr && host_to_target_timespec(ts_addr, &ts))
9095 goto efault;
9096 }
9097 }
9098 break;
9099 #endif
9100 #ifdef TARGET_NR_symlink
9101 case TARGET_NR_symlink:
9102 {
9103 void *p2;
9104 p = lock_user_string(arg1);
9105 p2 = lock_user_string(arg2);
9106 if (!p || !p2)
9107 ret = -TARGET_EFAULT;
9108 else
9109 ret = get_errno(symlink(p, p2));
9110 unlock_user(p2, arg2, 0);
9111 unlock_user(p, arg1, 0);
9112 }
9113 break;
9114 #endif
9115 #if defined(TARGET_NR_symlinkat)
9116 case TARGET_NR_symlinkat:
9117 {
9118 void *p2;
9119 p = lock_user_string(arg1);
9120 p2 = lock_user_string(arg3);
9121 if (!p || !p2)
9122 ret = -TARGET_EFAULT;
9123 else
9124 ret = get_errno(symlinkat(p, arg2, p2));
9125 unlock_user(p2, arg3, 0);
9126 unlock_user(p, arg1, 0);
9127 }
9128 break;
9129 #endif
9130 #ifdef TARGET_NR_oldlstat
9131 case TARGET_NR_oldlstat:
9132 goto unimplemented;
9133 #endif
9134 #ifdef TARGET_NR_readlink
9135 case TARGET_NR_readlink:
9136 {
9137 void *p2;
9138 p = lock_user_string(arg1);
9139 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9140 if (!p || !p2) {
9141 ret = -TARGET_EFAULT;
9142 } else if (!arg3) {
9143 /* Short circuit this for the magic exe check. */
9144 ret = -TARGET_EINVAL;
9145 } else if (is_proc_myself((const char *)p, "exe")) {
9146 char real[PATH_MAX], *temp;
9147 temp = realpath(exec_path, real);
9148 /* Return value is # of bytes that we wrote to the buffer. */
9149 if (temp == NULL) {
9150 ret = get_errno(-1);
9151 } else {
9152 /* Don't worry about sign mismatch as earlier mapping
9153 * logic would have thrown a bad address error. */
9154 ret = MIN(strlen(real), arg3);
9155 /* We cannot NUL terminate the string. */
9156 memcpy(p2, real, ret);
9157 }
9158 } else {
9159 ret = get_errno(readlink(path(p), p2, arg3));
9160 }
9161 unlock_user(p2, arg2, ret);
9162 unlock_user(p, arg1, 0);
9163 }
9164 break;
9165 #endif
9166 #if defined(TARGET_NR_readlinkat)
9167 case TARGET_NR_readlinkat:
9168 {
9169 void *p2;
9170 p = lock_user_string(arg2);
9171 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
9172 if (!p || !p2) {
9173 ret = -TARGET_EFAULT;
9174 } else if (is_proc_myself((const char *)p, "exe")) {
9175 char real[PATH_MAX], *temp;
9176 temp = realpath(exec_path, real);
9177 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
9178 snprintf((char *)p2, arg4, "%s", real);
9179 } else {
9180 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
9181 }
9182 unlock_user(p2, arg3, ret);
9183 unlock_user(p, arg2, 0);
9184 }
9185 break;
9186 #endif
9187 #ifdef TARGET_NR_uselib
9188 case TARGET_NR_uselib:
9189 goto unimplemented;
9190 #endif
9191 #ifdef TARGET_NR_swapon
9192 case TARGET_NR_swapon:
9193 if (!(p = lock_user_string(arg1)))
9194 goto efault;
9195 ret = get_errno(swapon(p, arg2));
9196 unlock_user(p, arg1, 0);
9197 break;
9198 #endif
9199 case TARGET_NR_reboot:
9200 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
9201 /* arg4 must be ignored in all other cases */
9202 p = lock_user_string(arg4);
9203 if (!p) {
9204 goto efault;
9205 }
9206 ret = get_errno(reboot(arg1, arg2, arg3, p));
9207 unlock_user(p, arg4, 0);
9208 } else {
9209 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
9210 }
9211 break;
9212 #ifdef TARGET_NR_readdir
9213 case TARGET_NR_readdir:
9214 goto unimplemented;
9215 #endif
9216 #ifdef TARGET_NR_mmap
9217 case TARGET_NR_mmap:
9218 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
9219 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
9220 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
9221 || defined(TARGET_S390X)
9222 {
9223 abi_ulong *v;
9224 abi_ulong v1, v2, v3, v4, v5, v6;
9225 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
9226 goto efault;
9227 v1 = tswapal(v[0]);
9228 v2 = tswapal(v[1]);
9229 v3 = tswapal(v[2]);
9230 v4 = tswapal(v[3]);
9231 v5 = tswapal(v[4]);
9232 v6 = tswapal(v[5]);
9233 unlock_user(v, arg1, 0);
9234 ret = get_errno(target_mmap(v1, v2, v3,
9235 target_to_host_bitmask(v4, mmap_flags_tbl),
9236 v5, v6));
9237 }
9238 #else
9239 ret = get_errno(target_mmap(arg1, arg2, arg3,
9240 target_to_host_bitmask(arg4, mmap_flags_tbl),
9241 arg5,
9242 arg6));
9243 #endif
9244 break;
9245 #endif
9246 #ifdef TARGET_NR_mmap2
9247 case TARGET_NR_mmap2:
9248 #ifndef MMAP_SHIFT
9249 #define MMAP_SHIFT 12
9250 #endif
9251 ret = get_errno(target_mmap(arg1, arg2, arg3,
9252 target_to_host_bitmask(arg4, mmap_flags_tbl),
9253 arg5,
9254 arg6 << MMAP_SHIFT));
9255 break;
9256 #endif
9257 case TARGET_NR_munmap:
9258 ret = get_errno(target_munmap(arg1, arg2));
9259 break;
9260 case TARGET_NR_mprotect:
9261 {
9262 TaskState *ts = cpu->opaque;
9263 /* Special hack to detect libc making the stack executable. */
9264 if ((arg3 & PROT_GROWSDOWN)
9265 && arg1 >= ts->info->stack_limit
9266 && arg1 <= ts->info->start_stack) {
9267 arg3 &= ~PROT_GROWSDOWN;
9268 arg2 = arg2 + arg1 - ts->info->stack_limit;
9269 arg1 = ts->info->stack_limit;
9270 }
9271 }
9272 ret = get_errno(target_mprotect(arg1, arg2, arg3));
9273 break;
9274 #ifdef TARGET_NR_mremap
9275 case TARGET_NR_mremap:
9276 ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
9277 break;
9278 #endif
9279 /* ??? msync/mlock/munlock are broken for softmmu. */
9280 #ifdef TARGET_NR_msync
9281 case TARGET_NR_msync:
9282 ret = get_errno(msync(g2h(arg1), arg2, arg3));
9283 break;
9284 #endif
9285 #ifdef TARGET_NR_mlock
9286 case TARGET_NR_mlock:
9287 ret = get_errno(mlock(g2h(arg1), arg2));
9288 break;
9289 #endif
9290 #ifdef TARGET_NR_munlock
9291 case TARGET_NR_munlock:
9292 ret = get_errno(munlock(g2h(arg1), arg2));
9293 break;
9294 #endif
9295 #ifdef TARGET_NR_mlockall
9296 case TARGET_NR_mlockall:
9297 ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
9298 break;
9299 #endif
9300 #ifdef TARGET_NR_munlockall
9301 case TARGET_NR_munlockall:
9302 ret = get_errno(munlockall());
9303 break;
9304 #endif
9305 case TARGET_NR_truncate:
9306 if (!(p = lock_user_string(arg1)))
9307 goto efault;
9308 ret = get_errno(truncate(p, arg2));
9309 unlock_user(p, arg1, 0);
9310 break;
9311 case TARGET_NR_ftruncate:
9312 ret = get_errno(ftruncate(arg1, arg2));
9313 break;
9314 case TARGET_NR_fchmod:
9315 ret = get_errno(fchmod(arg1, arg2));
9316 break;
9317 #if defined(TARGET_NR_fchmodat)
9318 case TARGET_NR_fchmodat:
9319 if (!(p = lock_user_string(arg2)))
9320 goto efault;
9321 ret = get_errno(fchmodat(arg1, p, arg3, 0));
9322 unlock_user(p, arg2, 0);
9323 break;
9324 #endif
9325 case TARGET_NR_getpriority:
9326 /* Note that negative values are valid for getpriority, so we must
9327 differentiate based on errno settings. */
9328 errno = 0;
9329 ret = getpriority(arg1, arg2);
9330 if (ret == -1 && errno != 0) {
9331 ret = -host_to_target_errno(errno);
9332 break;
9333 }
9334 #ifdef TARGET_ALPHA
9335 /* Return value is the unbiased priority. Signal no error. */
9336 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
9337 #else
9338 /* Return value is a biased priority to avoid negative numbers. */
9339 ret = 20 - ret;
9340 #endif
9341 break;
9342 case TARGET_NR_setpriority:
9343 ret = get_errno(setpriority(arg1, arg2, arg3));
9344 break;
9345 #ifdef TARGET_NR_profil
9346 case TARGET_NR_profil:
9347 goto unimplemented;
9348 #endif
9349 case TARGET_NR_statfs:
9350 if (!(p = lock_user_string(arg1)))
9351 goto efault;
9352 ret = get_errno(statfs(path(p), &stfs));
9353 unlock_user(p, arg1, 0);
9354 convert_statfs:
9355 if (!is_error(ret)) {
9356 struct target_statfs *target_stfs;
9357
9358 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
9359 goto efault;
9360 __put_user(stfs.f_type, &target_stfs->f_type);
9361 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9362 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9363 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9364 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9365 __put_user(stfs.f_files, &target_stfs->f_files);
9366 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9367 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9368 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9369 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9370 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9371 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9372 unlock_user_struct(target_stfs, arg2, 1);
9373 }
9374 break;
9375 case TARGET_NR_fstatfs:
9376 ret = get_errno(fstatfs(arg1, &stfs));
9377 goto convert_statfs;
9378 #ifdef TARGET_NR_statfs64
9379 case TARGET_NR_statfs64:
9380 if (!(p = lock_user_string(arg1)))
9381 goto efault;
9382 ret = get_errno(statfs(path(p), &stfs));
9383 unlock_user(p, arg1, 0);
9384 convert_statfs64:
9385 if (!is_error(ret)) {
9386 struct target_statfs64 *target_stfs;
9387
9388 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
9389 goto efault;
9390 __put_user(stfs.f_type, &target_stfs->f_type);
9391 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9392 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9393 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9394 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9395 __put_user(stfs.f_files, &target_stfs->f_files);
9396 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9397 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9398 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9399 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9400 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9401 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9402 unlock_user_struct(target_stfs, arg3, 1);
9403 }
9404 break;
9405 case TARGET_NR_fstatfs64:
9406 ret = get_errno(fstatfs(arg1, &stfs));
9407 goto convert_statfs64;
9408 #endif
9409 #ifdef TARGET_NR_ioperm
9410 case TARGET_NR_ioperm:
9411 goto unimplemented;
9412 #endif
9413 #ifdef TARGET_NR_socketcall
9414 case TARGET_NR_socketcall:
9415 ret = do_socketcall(arg1, arg2);
9416 break;
9417 #endif
9418 #ifdef TARGET_NR_accept
9419 case TARGET_NR_accept:
9420 ret = do_accept4(arg1, arg2, arg3, 0);
9421 break;
9422 #endif
9423 #ifdef TARGET_NR_accept4
9424 case TARGET_NR_accept4:
9425 ret = do_accept4(arg1, arg2, arg3, arg4);
9426 break;
9427 #endif
9428 #ifdef TARGET_NR_bind
9429 case TARGET_NR_bind:
9430 ret = do_bind(arg1, arg2, arg3);
9431 break;
9432 #endif
9433 #ifdef TARGET_NR_connect
9434 case TARGET_NR_connect:
9435 ret = do_connect(arg1, arg2, arg3);
9436 break;
9437 #endif
9438 #ifdef TARGET_NR_getpeername
9439 case TARGET_NR_getpeername:
9440 ret = do_getpeername(arg1, arg2, arg3);
9441 break;
9442 #endif
9443 #ifdef TARGET_NR_getsockname
9444 case TARGET_NR_getsockname:
9445 ret = do_getsockname(arg1, arg2, arg3);
9446 break;
9447 #endif
9448 #ifdef TARGET_NR_getsockopt
9449 case TARGET_NR_getsockopt:
9450 ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5);
9451 break;
9452 #endif
9453 #ifdef TARGET_NR_listen
9454 case TARGET_NR_listen:
9455 ret = get_errno(listen(arg1, arg2));
9456 break;
9457 #endif
9458 #ifdef TARGET_NR_recv
9459 case TARGET_NR_recv:
9460 ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
9461 break;
9462 #endif
9463 #ifdef TARGET_NR_recvfrom
9464 case TARGET_NR_recvfrom:
9465 ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
9466 break;
9467 #endif
9468 #ifdef TARGET_NR_recvmsg
9469 case TARGET_NR_recvmsg:
9470 ret = do_sendrecvmsg(arg1, arg2, arg3, 0);
9471 break;
9472 #endif
9473 #ifdef TARGET_NR_send
9474 case TARGET_NR_send:
9475 ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0);
9476 break;
9477 #endif
9478 #ifdef TARGET_NR_sendmsg
9479 case TARGET_NR_sendmsg:
9480 ret = do_sendrecvmsg(arg1, arg2, arg3, 1);
9481 break;
9482 #endif
9483 #ifdef TARGET_NR_sendmmsg
9484 case TARGET_NR_sendmmsg:
9485 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
9486 break;
9487 case TARGET_NR_recvmmsg:
9488 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
9489 break;
9490 #endif
9491 #ifdef TARGET_NR_sendto
9492 case TARGET_NR_sendto:
9493 ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
9494 break;
9495 #endif
9496 #ifdef TARGET_NR_shutdown
9497 case TARGET_NR_shutdown:
9498 ret = get_errno(shutdown(arg1, arg2));
9499 break;
9500 #endif
9501 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
9502 case TARGET_NR_getrandom:
9503 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
9504 if (!p) {
9505 goto efault;
9506 }
9507 ret = get_errno(getrandom(p, arg2, arg3));
9508 unlock_user(p, arg1, ret);
9509 break;
9510 #endif
9511 #ifdef TARGET_NR_socket
9512 case TARGET_NR_socket:
9513 ret = do_socket(arg1, arg2, arg3);
9514 break;
9515 #endif
9516 #ifdef TARGET_NR_socketpair
9517 case TARGET_NR_socketpair:
9518 ret = do_socketpair(arg1, arg2, arg3, arg4);
9519 break;
9520 #endif
9521 #ifdef TARGET_NR_setsockopt
9522 case TARGET_NR_setsockopt:
9523 ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
9524 break;
9525 #endif
9526 #if defined(TARGET_NR_syslog)
9527 case TARGET_NR_syslog:
9528 {
9529 int len = arg2;
9530
9531 switch (arg1) {
9532 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
9533 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
9534 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
9535 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
9536 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
9537 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
9538 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
9539 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
9540 {
9541 ret = get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
9542 }
9543 break;
9544 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
9545 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
9546 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
9547 {
9548 ret = -TARGET_EINVAL;
9549 if (len < 0) {
9550 goto fail;
9551 }
9552 ret = 0;
9553 if (len == 0) {
9554 break;
9555 }
9556 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9557 if (!p) {
9558 ret = -TARGET_EFAULT;
9559 goto fail;
9560 }
9561 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
9562 unlock_user(p, arg2, arg3);
9563 }
9564 break;
9565 default:
9566 ret = -EINVAL;
9567 break;
9568 }
9569 }
9570 break;
9571 #endif
9572 case TARGET_NR_setitimer:
9573 {
9574 struct itimerval value, ovalue, *pvalue;
9575
9576 if (arg2) {
9577 pvalue = &value;
9578 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
9579 || copy_from_user_timeval(&pvalue->it_value,
9580 arg2 + sizeof(struct target_timeval)))
9581 goto efault;
9582 } else {
9583 pvalue = NULL;
9584 }
9585 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
9586 if (!is_error(ret) && arg3) {
9587 if (copy_to_user_timeval(arg3,
9588 &ovalue.it_interval)
9589 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
9590 &ovalue.it_value))
9591 goto efault;
9592 }
9593 }
9594 break;
9595 case TARGET_NR_getitimer:
9596 {
9597 struct itimerval value;
9598
9599 ret = get_errno(getitimer(arg1, &value));
9600 if (!is_error(ret) && arg2) {
9601 if (copy_to_user_timeval(arg2,
9602 &value.it_interval)
9603 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
9604 &value.it_value))
9605 goto efault;
9606 }
9607 }
9608 break;
9609 #ifdef TARGET_NR_stat
9610 case TARGET_NR_stat:
9611 if (!(p = lock_user_string(arg1)))
9612 goto efault;
9613 ret = get_errno(stat(path(p), &st));
9614 unlock_user(p, arg1, 0);
9615 goto do_stat;
9616 #endif
9617 #ifdef TARGET_NR_lstat
9618 case TARGET_NR_lstat:
9619 if (!(p = lock_user_string(arg1)))
9620 goto efault;
9621 ret = get_errno(lstat(path(p), &st));
9622 unlock_user(p, arg1, 0);
9623 goto do_stat;
9624 #endif
9625 case TARGET_NR_fstat:
9626 {
9627 ret = get_errno(fstat(arg1, &st));
9628 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
9629 do_stat:
9630 #endif
9631 if (!is_error(ret)) {
9632 struct target_stat *target_st;
9633
9634 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
9635 goto efault;
9636 memset(target_st, 0, sizeof(*target_st));
9637 __put_user(st.st_dev, &target_st->st_dev);
9638 __put_user(st.st_ino, &target_st->st_ino);
9639 __put_user(st.st_mode, &target_st->st_mode);
9640 __put_user(st.st_uid, &target_st->st_uid);
9641 __put_user(st.st_gid, &target_st->st_gid);
9642 __put_user(st.st_nlink, &target_st->st_nlink);
9643 __put_user(st.st_rdev, &target_st->st_rdev);
9644 __put_user(st.st_size, &target_st->st_size);
9645 __put_user(st.st_blksize, &target_st->st_blksize);
9646 __put_user(st.st_blocks, &target_st->st_blocks);
9647 __put_user(st.st_atime, &target_st->target_st_atime);
9648 __put_user(st.st_mtime, &target_st->target_st_mtime);
9649 __put_user(st.st_ctime, &target_st->target_st_ctime);
9650 unlock_user_struct(target_st, arg2, 1);
9651 }
9652 }
9653 break;
9654 #ifdef TARGET_NR_olduname
9655 case TARGET_NR_olduname:
9656 goto unimplemented;
9657 #endif
9658 #ifdef TARGET_NR_iopl
9659 case TARGET_NR_iopl:
9660 goto unimplemented;
9661 #endif
9662 case TARGET_NR_vhangup:
9663 ret = get_errno(vhangup());
9664 break;
9665 #ifdef TARGET_NR_idle
9666 case TARGET_NR_idle:
9667 goto unimplemented;
9668 #endif
9669 #ifdef TARGET_NR_syscall
9670 case TARGET_NR_syscall:
9671 ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
9672 arg6, arg7, arg8, 0);
9673 break;
9674 #endif
9675 case TARGET_NR_wait4:
9676 {
9677 int status;
9678 abi_long status_ptr = arg2;
9679 struct rusage rusage, *rusage_ptr;
9680 abi_ulong target_rusage = arg4;
9681 abi_long rusage_err;
9682 if (target_rusage)
9683 rusage_ptr = &rusage;
9684 else
9685 rusage_ptr = NULL;
9686 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
9687 if (!is_error(ret)) {
9688 if (status_ptr && ret) {
9689 status = host_to_target_waitstatus(status);
9690 if (put_user_s32(status, status_ptr))
9691 goto efault;
9692 }
9693 if (target_rusage) {
9694 rusage_err = host_to_target_rusage(target_rusage, &rusage);
9695 if (rusage_err) {
9696 ret = rusage_err;
9697 }
9698 }
9699 }
9700 }
9701 break;
9702 #ifdef TARGET_NR_swapoff
9703 case TARGET_NR_swapoff:
9704 if (!(p = lock_user_string(arg1)))
9705 goto efault;
9706 ret = get_errno(swapoff(p));
9707 unlock_user(p, arg1, 0);
9708 break;
9709 #endif
9710 case TARGET_NR_sysinfo:
9711 {
9712 struct target_sysinfo *target_value;
9713 struct sysinfo value;
9714 ret = get_errno(sysinfo(&value));
9715 if (!is_error(ret) && arg1)
9716 {
9717 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
9718 goto efault;
9719 __put_user(value.uptime, &target_value->uptime);
9720 __put_user(value.loads[0], &target_value->loads[0]);
9721 __put_user(value.loads[1], &target_value->loads[1]);
9722 __put_user(value.loads[2], &target_value->loads[2]);
9723 __put_user(value.totalram, &target_value->totalram);
9724 __put_user(value.freeram, &target_value->freeram);
9725 __put_user(value.sharedram, &target_value->sharedram);
9726 __put_user(value.bufferram, &target_value->bufferram);
9727 __put_user(value.totalswap, &target_value->totalswap);
9728 __put_user(value.freeswap, &target_value->freeswap);
9729 __put_user(value.procs, &target_value->procs);
9730 __put_user(value.totalhigh, &target_value->totalhigh);
9731 __put_user(value.freehigh, &target_value->freehigh);
9732 __put_user(value.mem_unit, &target_value->mem_unit);
9733 unlock_user_struct(target_value, arg1, 1);
9734 }
9735 }
9736 break;
9737 #ifdef TARGET_NR_ipc
9738 case TARGET_NR_ipc:
9739 ret = do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
9740 break;
9741 #endif
9742 #ifdef TARGET_NR_semget
9743 case TARGET_NR_semget:
9744 ret = get_errno(semget(arg1, arg2, arg3));
9745 break;
9746 #endif
9747 #ifdef TARGET_NR_semop
9748 case TARGET_NR_semop:
9749 ret = do_semop(arg1, arg2, arg3);
9750 break;
9751 #endif
9752 #ifdef TARGET_NR_semctl
9753 case TARGET_NR_semctl:
9754 ret = do_semctl(arg1, arg2, arg3, arg4);
9755 break;
9756 #endif
9757 #ifdef TARGET_NR_msgctl
9758 case TARGET_NR_msgctl:
9759 ret = do_msgctl(arg1, arg2, arg3);
9760 break;
9761 #endif
9762 #ifdef TARGET_NR_msgget
9763 case TARGET_NR_msgget:
9764 ret = get_errno(msgget(arg1, arg2));
9765 break;
9766 #endif
9767 #ifdef TARGET_NR_msgrcv
9768 case TARGET_NR_msgrcv:
9769 ret = do_msgrcv(arg1, arg2, arg3, arg4, arg5);
9770 break;
9771 #endif
9772 #ifdef TARGET_NR_msgsnd
9773 case TARGET_NR_msgsnd:
9774 ret = do_msgsnd(arg1, arg2, arg3, arg4);
9775 break;
9776 #endif
9777 #ifdef TARGET_NR_shmget
9778 case TARGET_NR_shmget:
9779 ret = get_errno(shmget(arg1, arg2, arg3));
9780 break;
9781 #endif
9782 #ifdef TARGET_NR_shmctl
9783 case TARGET_NR_shmctl:
9784 ret = do_shmctl(arg1, arg2, arg3);
9785 break;
9786 #endif
9787 #ifdef TARGET_NR_shmat
9788 case TARGET_NR_shmat:
9789 ret = do_shmat(cpu_env, arg1, arg2, arg3);
9790 break;
9791 #endif
9792 #ifdef TARGET_NR_shmdt
9793 case TARGET_NR_shmdt:
9794 ret = do_shmdt(arg1);
9795 break;
9796 #endif
9797 case TARGET_NR_fsync:
9798 ret = get_errno(fsync(arg1));
9799 break;
9800 case TARGET_NR_clone:
9801 /* Linux manages to have three different orderings for its
9802 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
9803 * match the kernel's CONFIG_CLONE_* settings.
9804 * Microblaze is further special in that it uses a sixth
9805 * implicit argument to clone for the TLS pointer.
9806 */
9807 #if defined(TARGET_MICROBLAZE)
9808 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
9809 #elif defined(TARGET_CLONE_BACKWARDS)
9810 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
9811 #elif defined(TARGET_CLONE_BACKWARDS2)
9812 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
9813 #else
9814 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
9815 #endif
9816 break;
9817 #ifdef __NR_exit_group
9818 /* new thread calls */
9819 case TARGET_NR_exit_group:
9820 #ifdef TARGET_GPROF
9821 _mcleanup();
9822 #endif
9823 gdb_exit(cpu_env, arg1);
9824 ret = get_errno(exit_group(arg1));
9825 break;
9826 #endif
9827 case TARGET_NR_setdomainname:
9828 if (!(p = lock_user_string(arg1)))
9829 goto efault;
9830 ret = get_errno(setdomainname(p, arg2));
9831 unlock_user(p, arg1, 0);
9832 break;
9833 case TARGET_NR_uname:
9834 /* no need to transcode because we use the linux syscall */
9835 {
9836 struct new_utsname * buf;
9837
9838 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
9839 goto efault;
9840 ret = get_errno(sys_uname(buf));
9841 if (!is_error(ret)) {
9842 /* Overwrite the native machine name with whatever is being
9843 emulated. */
9844 strcpy (buf->machine, cpu_to_uname_machine(cpu_env));
9845 /* Allow the user to override the reported release. */
9846 if (qemu_uname_release && *qemu_uname_release) {
9847 g_strlcpy(buf->release, qemu_uname_release,
9848 sizeof(buf->release));
9849 }
9850 }
9851 unlock_user_struct(buf, arg1, 1);
9852 }
9853 break;
9854 #ifdef TARGET_I386
9855 case TARGET_NR_modify_ldt:
9856 ret = do_modify_ldt(cpu_env, arg1, arg2, arg3);
9857 break;
9858 #if !defined(TARGET_X86_64)
9859 case TARGET_NR_vm86old:
9860 goto unimplemented;
9861 case TARGET_NR_vm86:
9862 ret = do_vm86(cpu_env, arg1, arg2);
9863 break;
9864 #endif
9865 #endif
9866 case TARGET_NR_adjtimex:
9867 {
9868 struct timex host_buf;
9869
9870 if (target_to_host_timex(&host_buf, arg1) != 0) {
9871 goto efault;
9872 }
9873 ret = get_errno(adjtimex(&host_buf));
9874 if (!is_error(ret)) {
9875 if (host_to_target_timex(arg1, &host_buf) != 0) {
9876 goto efault;
9877 }
9878 }
9879 }
9880 break;
9881 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
9882 case TARGET_NR_clock_adjtime:
9883 {
9884 struct timex htx, *phtx = &htx;
9885
9886 if (target_to_host_timex(phtx, arg2) != 0) {
9887 goto efault;
9888 }
9889 ret = get_errno(clock_adjtime(arg1, phtx));
9890 if (!is_error(ret) && phtx) {
9891 if (host_to_target_timex(arg2, phtx) != 0) {
9892 goto efault;
9893 }
9894 }
9895 }
9896 break;
9897 #endif
9898 #ifdef TARGET_NR_create_module
9899 case TARGET_NR_create_module:
9900 #endif
9901 case TARGET_NR_init_module:
9902 case TARGET_NR_delete_module:
9903 #ifdef TARGET_NR_get_kernel_syms
9904 case TARGET_NR_get_kernel_syms:
9905 #endif
9906 goto unimplemented;
9907 case TARGET_NR_quotactl:
9908 goto unimplemented;
9909 case TARGET_NR_getpgid:
9910 ret = get_errno(getpgid(arg1));
9911 break;
9912 case TARGET_NR_fchdir:
9913 ret = get_errno(fchdir(arg1));
9914 break;
9915 #ifdef TARGET_NR_bdflush /* not on x86_64 */
9916 case TARGET_NR_bdflush:
9917 goto unimplemented;
9918 #endif
9919 #ifdef TARGET_NR_sysfs
9920 case TARGET_NR_sysfs:
9921 goto unimplemented;
9922 #endif
9923 case TARGET_NR_personality:
9924 ret = get_errno(personality(arg1));
9925 break;
9926 #ifdef TARGET_NR_afs_syscall
9927 case TARGET_NR_afs_syscall:
9928 goto unimplemented;
9929 #endif
9930 #ifdef TARGET_NR__llseek /* Not on alpha */
9931 case TARGET_NR__llseek:
9932 {
9933 int64_t res;
9934 #if !defined(__NR_llseek)
9935 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
9936 if (res == -1) {
9937 ret = get_errno(res);
9938 } else {
9939 ret = 0;
9940 }
9941 #else
9942 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
9943 #endif
9944 if ((ret == 0) && put_user_s64(res, arg4)) {
9945 goto efault;
9946 }
9947 }
9948 break;
9949 #endif
9950 #ifdef TARGET_NR_getdents
9951 case TARGET_NR_getdents:
9952 #ifdef __NR_getdents
9953 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
9954 {
9955 struct target_dirent *target_dirp;
9956 struct linux_dirent *dirp;
9957 abi_long count = arg3;
9958
9959 dirp = g_try_malloc(count);
9960 if (!dirp) {
9961 ret = -TARGET_ENOMEM;
9962 goto fail;
9963 }
9964
9965 ret = get_errno(sys_getdents(arg1, dirp, count));
9966 if (!is_error(ret)) {
9967 struct linux_dirent *de;
9968 struct target_dirent *tde;
9969 int len = ret;
9970 int reclen, treclen;
9971 int count1, tnamelen;
9972
9973 count1 = 0;
9974 de = dirp;
9975 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9976 goto efault;
9977 tde = target_dirp;
9978 while (len > 0) {
9979 reclen = de->d_reclen;
9980 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
9981 assert(tnamelen >= 0);
9982 treclen = tnamelen + offsetof(struct target_dirent, d_name);
9983 assert(count1 + treclen <= count);
9984 tde->d_reclen = tswap16(treclen);
9985 tde->d_ino = tswapal(de->d_ino);
9986 tde->d_off = tswapal(de->d_off);
9987 memcpy(tde->d_name, de->d_name, tnamelen);
9988 de = (struct linux_dirent *)((char *)de + reclen);
9989 len -= reclen;
9990 tde = (struct target_dirent *)((char *)tde + treclen);
9991 count1 += treclen;
9992 }
9993 ret = count1;
9994 unlock_user(target_dirp, arg2, ret);
9995 }
9996 g_free(dirp);
9997 }
9998 #else
9999 {
10000 struct linux_dirent *dirp;
10001 abi_long count = arg3;
10002
10003 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
10004 goto efault;
10005 ret = get_errno(sys_getdents(arg1, dirp, count));
10006 if (!is_error(ret)) {
10007 struct linux_dirent *de;
10008 int len = ret;
10009 int reclen;
10010 de = dirp;
10011 while (len > 0) {
10012 reclen = de->d_reclen;
10013 if (reclen > len)
10014 break;
10015 de->d_reclen = tswap16(reclen);
10016 tswapls(&de->d_ino);
10017 tswapls(&de->d_off);
10018 de = (struct linux_dirent *)((char *)de + reclen);
10019 len -= reclen;
10020 }
10021 }
10022 unlock_user(dirp, arg2, ret);
10023 }
10024 #endif
10025 #else
10026 /* Implement getdents in terms of getdents64 */
10027 {
10028 struct linux_dirent64 *dirp;
10029 abi_long count = arg3;
10030
10031 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
10032 if (!dirp) {
10033 goto efault;
10034 }
10035 ret = get_errno(sys_getdents64(arg1, dirp, count));
10036 if (!is_error(ret)) {
10037 /* Convert the dirent64 structs to target dirent. We do this
10038 * in-place, since we can guarantee that a target_dirent is no
10039 * larger than a dirent64; however this means we have to be
10040 * careful to read everything before writing in the new format.
10041 */
10042 struct linux_dirent64 *de;
10043 struct target_dirent *tde;
10044 int len = ret;
10045 int tlen = 0;
10046
10047 de = dirp;
10048 tde = (struct target_dirent *)dirp;
10049 while (len > 0) {
10050 int namelen, treclen;
10051 int reclen = de->d_reclen;
10052 uint64_t ino = de->d_ino;
10053 int64_t off = de->d_off;
10054 uint8_t type = de->d_type;
10055
10056 namelen = strlen(de->d_name);
10057 treclen = offsetof(struct target_dirent, d_name)
10058 + namelen + 2;
10059 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
10060
10061 memmove(tde->d_name, de->d_name, namelen + 1);
10062 tde->d_ino = tswapal(ino);
10063 tde->d_off = tswapal(off);
10064 tde->d_reclen = tswap16(treclen);
10065 /* The target_dirent type is in what was formerly a padding
10066 * byte at the end of the structure:
10067 */
10068 *(((char *)tde) + treclen - 1) = type;
10069
10070 de = (struct linux_dirent64 *)((char *)de + reclen);
10071 tde = (struct target_dirent *)((char *)tde + treclen);
10072 len -= reclen;
10073 tlen += treclen;
10074 }
10075 ret = tlen;
10076 }
10077 unlock_user(dirp, arg2, ret);
10078 }
10079 #endif
10080 break;
10081 #endif /* TARGET_NR_getdents */
10082 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
10083 case TARGET_NR_getdents64:
10084 {
10085 struct linux_dirent64 *dirp;
10086 abi_long count = arg3;
10087 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
10088 goto efault;
10089 ret = get_errno(sys_getdents64(arg1, dirp, count));
10090 if (!is_error(ret)) {
10091 struct linux_dirent64 *de;
10092 int len = ret;
10093 int reclen;
10094 de = dirp;
10095 while (len > 0) {
10096 reclen = de->d_reclen;
10097 if (reclen > len)
10098 break;
10099 de->d_reclen = tswap16(reclen);
10100 tswap64s((uint64_t *)&de->d_ino);
10101 tswap64s((uint64_t *)&de->d_off);
10102 de = (struct linux_dirent64 *)((char *)de + reclen);
10103 len -= reclen;
10104 }
10105 }
10106 unlock_user(dirp, arg2, ret);
10107 }
10108 break;
10109 #endif /* TARGET_NR_getdents64 */
10110 #if defined(TARGET_NR__newselect)
10111 case TARGET_NR__newselect:
10112 ret = do_select(arg1, arg2, arg3, arg4, arg5);
10113 break;
10114 #endif
10115 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll)
10116 # ifdef TARGET_NR_poll
10117 case TARGET_NR_poll:
10118 # endif
10119 # ifdef TARGET_NR_ppoll
10120 case TARGET_NR_ppoll:
10121 # endif
10122 {
10123 struct target_pollfd *target_pfd;
10124 unsigned int nfds = arg2;
10125 struct pollfd *pfd;
10126 unsigned int i;
10127
10128 pfd = NULL;
10129 target_pfd = NULL;
10130 if (nfds) {
10131 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
10132 ret = -TARGET_EINVAL;
10133 break;
10134 }
10135
10136 target_pfd = lock_user(VERIFY_WRITE, arg1,
10137 sizeof(struct target_pollfd) * nfds, 1);
10138 if (!target_pfd) {
10139 goto efault;
10140 }
10141
10142 pfd = alloca(sizeof(struct pollfd) * nfds);
10143 for (i = 0; i < nfds; i++) {
10144 pfd[i].fd = tswap32(target_pfd[i].fd);
10145 pfd[i].events = tswap16(target_pfd[i].events);
10146 }
10147 }
10148
10149 switch (num) {
10150 # ifdef TARGET_NR_ppoll
10151 case TARGET_NR_ppoll:
10152 {
10153 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
10154 target_sigset_t *target_set;
10155 sigset_t _set, *set = &_set;
10156
10157 if (arg3) {
10158 if (target_to_host_timespec(timeout_ts, arg3)) {
10159 unlock_user(target_pfd, arg1, 0);
10160 goto efault;
10161 }
10162 } else {
10163 timeout_ts = NULL;
10164 }
10165
10166 if (arg4) {
10167 if (arg5 != sizeof(target_sigset_t)) {
10168 unlock_user(target_pfd, arg1, 0);
10169 ret = -TARGET_EINVAL;
10170 break;
10171 }
10172
10173 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1);
10174 if (!target_set) {
10175 unlock_user(target_pfd, arg1, 0);
10176 goto efault;
10177 }
10178 target_to_host_sigset(set, target_set);
10179 } else {
10180 set = NULL;
10181 }
10182
10183 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
10184 set, SIGSET_T_SIZE));
10185
10186 if (!is_error(ret) && arg3) {
10187 host_to_target_timespec(arg3, timeout_ts);
10188 }
10189 if (arg4) {
10190 unlock_user(target_set, arg4, 0);
10191 }
10192 break;
10193 }
10194 # endif
10195 # ifdef TARGET_NR_poll
10196 case TARGET_NR_poll:
10197 {
10198 struct timespec ts, *pts;
10199
10200 if (arg3 >= 0) {
10201 /* Convert ms to secs, ns */
10202 ts.tv_sec = arg3 / 1000;
10203 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
10204 pts = &ts;
10205 } else {
10206 /* -ve poll() timeout means "infinite" */
10207 pts = NULL;
10208 }
10209 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
10210 break;
10211 }
10212 # endif
10213 default:
10214 g_assert_not_reached();
10215 }
10216
10217 if (!is_error(ret)) {
10218 for(i = 0; i < nfds; i++) {
10219 target_pfd[i].revents = tswap16(pfd[i].revents);
10220 }
10221 }
10222 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
10223 }
10224 break;
10225 #endif
10226 case TARGET_NR_flock:
10227 /* NOTE: the flock constant seems to be the same for every
10228 Linux platform */
10229 ret = get_errno(safe_flock(arg1, arg2));
10230 break;
10231 case TARGET_NR_readv:
10232 {
10233 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10234 if (vec != NULL) {
10235 ret = get_errno(safe_readv(arg1, vec, arg3));
10236 unlock_iovec(vec, arg2, arg3, 1);
10237 } else {
10238 ret = -host_to_target_errno(errno);
10239 }
10240 }
10241 break;
10242 case TARGET_NR_writev:
10243 {
10244 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10245 if (vec != NULL) {
10246 ret = get_errno(safe_writev(arg1, vec, arg3));
10247 unlock_iovec(vec, arg2, arg3, 0);
10248 } else {
10249 ret = -host_to_target_errno(errno);
10250 }
10251 }
10252 break;
10253 #if defined(TARGET_NR_preadv)
10254 case TARGET_NR_preadv:
10255 {
10256 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10257 if (vec != NULL) {
10258 ret = get_errno(safe_preadv(arg1, vec, arg3, arg4, arg5));
10259 unlock_iovec(vec, arg2, arg3, 1);
10260 } else {
10261 ret = -host_to_target_errno(errno);
10262 }
10263 }
10264 break;
10265 #endif
10266 #if defined(TARGET_NR_pwritev)
10267 case TARGET_NR_pwritev:
10268 {
10269 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10270 if (vec != NULL) {
10271 ret = get_errno(safe_pwritev(arg1, vec, arg3, arg4, arg5));
10272 unlock_iovec(vec, arg2, arg3, 0);
10273 } else {
10274 ret = -host_to_target_errno(errno);
10275 }
10276 }
10277 break;
10278 #endif
10279 case TARGET_NR_getsid:
10280 ret = get_errno(getsid(arg1));
10281 break;
10282 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10283 case TARGET_NR_fdatasync:
10284 ret = get_errno(fdatasync(arg1));
10285 break;
10286 #endif
10287 #ifdef TARGET_NR__sysctl
10288 case TARGET_NR__sysctl:
10289 /* We don't implement this, but ENOTDIR is always a safe
10290 return value. */
10291 ret = -TARGET_ENOTDIR;
10292 break;
10293 #endif
10294 case TARGET_NR_sched_getaffinity:
10295 {
10296 unsigned int mask_size;
10297 unsigned long *mask;
10298
10299 /*
10300 * sched_getaffinity needs multiples of ulong, so need to take
10301 * care of mismatches between target ulong and host ulong sizes.
10302 */
10303 if (arg2 & (sizeof(abi_ulong) - 1)) {
10304 ret = -TARGET_EINVAL;
10305 break;
10306 }
10307 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10308
10309 mask = alloca(mask_size);
10310 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10311
10312 if (!is_error(ret)) {
10313 if (ret > arg2) {
10314 /* More data returned than the caller's buffer will fit.
10315 * This only happens if sizeof(abi_long) < sizeof(long)
10316 * and the caller passed us a buffer holding an odd number
10317 * of abi_longs. If the host kernel is actually using the
10318 * extra 4 bytes then fail EINVAL; otherwise we can just
10319 * ignore them and only copy the interesting part.
10320 */
10321 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
10322 if (numcpus > arg2 * 8) {
10323 ret = -TARGET_EINVAL;
10324 break;
10325 }
10326 ret = arg2;
10327 }
10328
10329 if (copy_to_user(arg3, mask, ret)) {
10330 goto efault;
10331 }
10332 }
10333 }
10334 break;
10335 case TARGET_NR_sched_setaffinity:
10336 {
10337 unsigned int mask_size;
10338 unsigned long *mask;
10339
10340 /*
10341 * sched_setaffinity needs multiples of ulong, so need to take
10342 * care of mismatches between target ulong and host ulong sizes.
10343 */
10344 if (arg2 & (sizeof(abi_ulong) - 1)) {
10345 ret = -TARGET_EINVAL;
10346 break;
10347 }
10348 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10349
10350 mask = alloca(mask_size);
10351 if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) {
10352 goto efault;
10353 }
10354 memcpy(mask, p, arg2);
10355 unlock_user_struct(p, arg2, 0);
10356
10357 ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
10358 }
10359 break;
10360 case TARGET_NR_sched_setparam:
10361 {
10362 struct sched_param *target_schp;
10363 struct sched_param schp;
10364
10365 if (arg2 == 0) {
10366 return -TARGET_EINVAL;
10367 }
10368 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
10369 goto efault;
10370 schp.sched_priority = tswap32(target_schp->sched_priority);
10371 unlock_user_struct(target_schp, arg2, 0);
10372 ret = get_errno(sched_setparam(arg1, &schp));
10373 }
10374 break;
10375 case TARGET_NR_sched_getparam:
10376 {
10377 struct sched_param *target_schp;
10378 struct sched_param schp;
10379
10380 if (arg2 == 0) {
10381 return -TARGET_EINVAL;
10382 }
10383 ret = get_errno(sched_getparam(arg1, &schp));
10384 if (!is_error(ret)) {
10385 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
10386 goto efault;
10387 target_schp->sched_priority = tswap32(schp.sched_priority);
10388 unlock_user_struct(target_schp, arg2, 1);
10389 }
10390 }
10391 break;
10392 case TARGET_NR_sched_setscheduler:
10393 {
10394 struct sched_param *target_schp;
10395 struct sched_param schp;
10396 if (arg3 == 0) {
10397 return -TARGET_EINVAL;
10398 }
10399 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
10400 goto efault;
10401 schp.sched_priority = tswap32(target_schp->sched_priority);
10402 unlock_user_struct(target_schp, arg3, 0);
10403 ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
10404 }
10405 break;
10406 case TARGET_NR_sched_getscheduler:
10407 ret = get_errno(sched_getscheduler(arg1));
10408 break;
10409 case TARGET_NR_sched_yield:
10410 ret = get_errno(sched_yield());
10411 break;
10412 case TARGET_NR_sched_get_priority_max:
10413 ret = get_errno(sched_get_priority_max(arg1));
10414 break;
10415 case TARGET_NR_sched_get_priority_min:
10416 ret = get_errno(sched_get_priority_min(arg1));
10417 break;
10418 case TARGET_NR_sched_rr_get_interval:
10419 {
10420 struct timespec ts;
10421 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10422 if (!is_error(ret)) {
10423 ret = host_to_target_timespec(arg2, &ts);
10424 }
10425 }
10426 break;
10427 case TARGET_NR_nanosleep:
10428 {
10429 struct timespec req, rem;
10430 target_to_host_timespec(&req, arg1);
10431 ret = get_errno(safe_nanosleep(&req, &rem));
10432 if (is_error(ret) && arg2) {
10433 host_to_target_timespec(arg2, &rem);
10434 }
10435 }
10436 break;
10437 #ifdef TARGET_NR_query_module
10438 case TARGET_NR_query_module:
10439 goto unimplemented;
10440 #endif
10441 #ifdef TARGET_NR_nfsservctl
10442 case TARGET_NR_nfsservctl:
10443 goto unimplemented;
10444 #endif
10445 case TARGET_NR_prctl:
10446 switch (arg1) {
10447 case PR_GET_PDEATHSIG:
10448 {
10449 int deathsig;
10450 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
10451 if (!is_error(ret) && arg2
10452 && put_user_ual(deathsig, arg2)) {
10453 goto efault;
10454 }
10455 break;
10456 }
10457 #ifdef PR_GET_NAME
10458 case PR_GET_NAME:
10459 {
10460 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
10461 if (!name) {
10462 goto efault;
10463 }
10464 ret = get_errno(prctl(arg1, (unsigned long)name,
10465 arg3, arg4, arg5));
10466 unlock_user(name, arg2, 16);
10467 break;
10468 }
10469 case PR_SET_NAME:
10470 {
10471 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
10472 if (!name) {
10473 goto efault;
10474 }
10475 ret = get_errno(prctl(arg1, (unsigned long)name,
10476 arg3, arg4, arg5));
10477 unlock_user(name, arg2, 0);
10478 break;
10479 }
10480 #endif
10481 default:
10482 /* Most prctl options have no pointer arguments */
10483 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
10484 break;
10485 }
10486 break;
10487 #ifdef TARGET_NR_arch_prctl
10488 case TARGET_NR_arch_prctl:
10489 #if defined(TARGET_I386) && !defined(TARGET_ABI32)
10490 ret = do_arch_prctl(cpu_env, arg1, arg2);
10491 break;
10492 #else
10493 goto unimplemented;
10494 #endif
10495 #endif
10496 #ifdef TARGET_NR_pread64
10497 case TARGET_NR_pread64:
10498 if (regpairs_aligned(cpu_env)) {
10499 arg4 = arg5;
10500 arg5 = arg6;
10501 }
10502 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
10503 goto efault;
10504 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10505 unlock_user(p, arg2, ret);
10506 break;
10507 case TARGET_NR_pwrite64:
10508 if (regpairs_aligned(cpu_env)) {
10509 arg4 = arg5;
10510 arg5 = arg6;
10511 }
10512 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
10513 goto efault;
10514 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10515 unlock_user(p, arg2, 0);
10516 break;
10517 #endif
10518 case TARGET_NR_getcwd:
10519 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10520 goto efault;
10521 ret = get_errno(sys_getcwd1(p, arg2));
10522 unlock_user(p, arg1, ret);
10523 break;
10524 case TARGET_NR_capget:
10525 case TARGET_NR_capset:
10526 {
10527 struct target_user_cap_header *target_header;
10528 struct target_user_cap_data *target_data = NULL;
10529 struct __user_cap_header_struct header;
10530 struct __user_cap_data_struct data[2];
10531 struct __user_cap_data_struct *dataptr = NULL;
10532 int i, target_datalen;
10533 int data_items = 1;
10534
10535 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10536 goto efault;
10537 }
10538 header.version = tswap32(target_header->version);
10539 header.pid = tswap32(target_header->pid);
10540
10541 if (header.version != _LINUX_CAPABILITY_VERSION) {
10542 /* Version 2 and up takes pointer to two user_data structs */
10543 data_items = 2;
10544 }
10545
10546 target_datalen = sizeof(*target_data) * data_items;
10547
10548 if (arg2) {
10549 if (num == TARGET_NR_capget) {
10550 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10551 } else {
10552 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10553 }
10554 if (!target_data) {
10555 unlock_user_struct(target_header, arg1, 0);
10556 goto efault;
10557 }
10558
10559 if (num == TARGET_NR_capset) {
10560 for (i = 0; i < data_items; i++) {
10561 data[i].effective = tswap32(target_data[i].effective);
10562 data[i].permitted = tswap32(target_data[i].permitted);
10563 data[i].inheritable = tswap32(target_data[i].inheritable);
10564 }
10565 }
10566
10567 dataptr = data;
10568 }
10569
10570 if (num == TARGET_NR_capget) {
10571 ret = get_errno(capget(&header, dataptr));
10572 } else {
10573 ret = get_errno(capset(&header, dataptr));
10574 }
10575
10576 /* The kernel always updates version for both capget and capset */
10577 target_header->version = tswap32(header.version);
10578 unlock_user_struct(target_header, arg1, 1);
10579
10580 if (arg2) {
10581 if (num == TARGET_NR_capget) {
10582 for (i = 0; i < data_items; i++) {
10583 target_data[i].effective = tswap32(data[i].effective);
10584 target_data[i].permitted = tswap32(data[i].permitted);
10585 target_data[i].inheritable = tswap32(data[i].inheritable);
10586 }
10587 unlock_user(target_data, arg2, target_datalen);
10588 } else {
10589 unlock_user(target_data, arg2, 0);
10590 }
10591 }
10592 break;
10593 }
10594 case TARGET_NR_sigaltstack:
10595 ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env));
10596 break;
10597
10598 #ifdef CONFIG_SENDFILE
10599 case TARGET_NR_sendfile:
10600 {
10601 off_t *offp = NULL;
10602 off_t off;
10603 if (arg3) {
10604 ret = get_user_sal(off, arg3);
10605 if (is_error(ret)) {
10606 break;
10607 }
10608 offp = &off;
10609 }
10610 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10611 if (!is_error(ret) && arg3) {
10612 abi_long ret2 = put_user_sal(off, arg3);
10613 if (is_error(ret2)) {
10614 ret = ret2;
10615 }
10616 }
10617 break;
10618 }
10619 #ifdef TARGET_NR_sendfile64
10620 case TARGET_NR_sendfile64:
10621 {
10622 off_t *offp = NULL;
10623 off_t off;
10624 if (arg3) {
10625 ret = get_user_s64(off, arg3);
10626 if (is_error(ret)) {
10627 break;
10628 }
10629 offp = &off;
10630 }
10631 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10632 if (!is_error(ret) && arg3) {
10633 abi_long ret2 = put_user_s64(off, arg3);
10634 if (is_error(ret2)) {
10635 ret = ret2;
10636 }
10637 }
10638 break;
10639 }
10640 #endif
10641 #else
10642 case TARGET_NR_sendfile:
10643 #ifdef TARGET_NR_sendfile64
10644 case TARGET_NR_sendfile64:
10645 #endif
10646 goto unimplemented;
10647 #endif
10648
10649 #ifdef TARGET_NR_getpmsg
10650 case TARGET_NR_getpmsg:
10651 goto unimplemented;
10652 #endif
10653 #ifdef TARGET_NR_putpmsg
10654 case TARGET_NR_putpmsg:
10655 goto unimplemented;
10656 #endif
10657 #ifdef TARGET_NR_vfork
10658 case TARGET_NR_vfork:
10659 ret = get_errno(do_fork(cpu_env,
10660 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
10661 0, 0, 0, 0));
10662 break;
10663 #endif
10664 #ifdef TARGET_NR_ugetrlimit
10665 case TARGET_NR_ugetrlimit:
10666 {
10667 struct rlimit rlim;
10668 int resource = target_to_host_resource(arg1);
10669 ret = get_errno(getrlimit(resource, &rlim));
10670 if (!is_error(ret)) {
10671 struct target_rlimit *target_rlim;
10672 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10673 goto efault;
10674 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10675 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10676 unlock_user_struct(target_rlim, arg2, 1);
10677 }
10678 break;
10679 }
10680 #endif
10681 #ifdef TARGET_NR_truncate64
10682 case TARGET_NR_truncate64:
10683 if (!(p = lock_user_string(arg1)))
10684 goto efault;
10685 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
10686 unlock_user(p, arg1, 0);
10687 break;
10688 #endif
10689 #ifdef TARGET_NR_ftruncate64
10690 case TARGET_NR_ftruncate64:
10691 ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
10692 break;
10693 #endif
10694 #ifdef TARGET_NR_stat64
10695 case TARGET_NR_stat64:
10696 if (!(p = lock_user_string(arg1)))
10697 goto efault;
10698 ret = get_errno(stat(path(p), &st));
10699 unlock_user(p, arg1, 0);
10700 if (!is_error(ret))
10701 ret = host_to_target_stat64(cpu_env, arg2, &st);
10702 break;
10703 #endif
10704 #ifdef TARGET_NR_lstat64
10705 case TARGET_NR_lstat64:
10706 if (!(p = lock_user_string(arg1)))
10707 goto efault;
10708 ret = get_errno(lstat(path(p), &st));
10709 unlock_user(p, arg1, 0);
10710 if (!is_error(ret))
10711 ret = host_to_target_stat64(cpu_env, arg2, &st);
10712 break;
10713 #endif
10714 #ifdef TARGET_NR_fstat64
10715 case TARGET_NR_fstat64:
10716 ret = get_errno(fstat(arg1, &st));
10717 if (!is_error(ret))
10718 ret = host_to_target_stat64(cpu_env, arg2, &st);
10719 break;
10720 #endif
10721 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
10722 #ifdef TARGET_NR_fstatat64
10723 case TARGET_NR_fstatat64:
10724 #endif
10725 #ifdef TARGET_NR_newfstatat
10726 case TARGET_NR_newfstatat:
10727 #endif
10728 if (!(p = lock_user_string(arg2)))
10729 goto efault;
10730 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
10731 if (!is_error(ret))
10732 ret = host_to_target_stat64(cpu_env, arg3, &st);
10733 break;
10734 #endif
10735 #ifdef TARGET_NR_lchown
10736 case TARGET_NR_lchown:
10737 if (!(p = lock_user_string(arg1)))
10738 goto efault;
10739 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
10740 unlock_user(p, arg1, 0);
10741 break;
10742 #endif
10743 #ifdef TARGET_NR_getuid
10744 case TARGET_NR_getuid:
10745 ret = get_errno(high2lowuid(getuid()));
10746 break;
10747 #endif
10748 #ifdef TARGET_NR_getgid
10749 case TARGET_NR_getgid:
10750 ret = get_errno(high2lowgid(getgid()));
10751 break;
10752 #endif
10753 #ifdef TARGET_NR_geteuid
10754 case TARGET_NR_geteuid:
10755 ret = get_errno(high2lowuid(geteuid()));
10756 break;
10757 #endif
10758 #ifdef TARGET_NR_getegid
10759 case TARGET_NR_getegid:
10760 ret = get_errno(high2lowgid(getegid()));
10761 break;
10762 #endif
10763 case TARGET_NR_setreuid:
10764 ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
10765 break;
10766 case TARGET_NR_setregid:
10767 ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
10768 break;
10769 case TARGET_NR_getgroups:
10770 {
10771 int gidsetsize = arg1;
10772 target_id *target_grouplist;
10773 gid_t *grouplist;
10774 int i;
10775
10776 grouplist = alloca(gidsetsize * sizeof(gid_t));
10777 ret = get_errno(getgroups(gidsetsize, grouplist));
10778 if (gidsetsize == 0)
10779 break;
10780 if (!is_error(ret)) {
10781 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
10782 if (!target_grouplist)
10783 goto efault;
10784 for(i = 0;i < ret; i++)
10785 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
10786 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
10787 }
10788 }
10789 break;
10790 case TARGET_NR_setgroups:
10791 {
10792 int gidsetsize = arg1;
10793 target_id *target_grouplist;
10794 gid_t *grouplist = NULL;
10795 int i;
10796 if (gidsetsize) {
10797 grouplist = alloca(gidsetsize * sizeof(gid_t));
10798 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
10799 if (!target_grouplist) {
10800 ret = -TARGET_EFAULT;
10801 goto fail;
10802 }
10803 for (i = 0; i < gidsetsize; i++) {
10804 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
10805 }
10806 unlock_user(target_grouplist, arg2, 0);
10807 }
10808 ret = get_errno(setgroups(gidsetsize, grouplist));
10809 }
10810 break;
10811 case TARGET_NR_fchown:
10812 ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
10813 break;
10814 #if defined(TARGET_NR_fchownat)
10815 case TARGET_NR_fchownat:
10816 if (!(p = lock_user_string(arg2)))
10817 goto efault;
10818 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
10819 low2highgid(arg4), arg5));
10820 unlock_user(p, arg2, 0);
10821 break;
10822 #endif
10823 #ifdef TARGET_NR_setresuid
10824 case TARGET_NR_setresuid:
10825 ret = get_errno(sys_setresuid(low2highuid(arg1),
10826 low2highuid(arg2),
10827 low2highuid(arg3)));
10828 break;
10829 #endif
10830 #ifdef TARGET_NR_getresuid
10831 case TARGET_NR_getresuid:
10832 {
10833 uid_t ruid, euid, suid;
10834 ret = get_errno(getresuid(&ruid, &euid, &suid));
10835 if (!is_error(ret)) {
10836 if (put_user_id(high2lowuid(ruid), arg1)
10837 || put_user_id(high2lowuid(euid), arg2)
10838 || put_user_id(high2lowuid(suid), arg3))
10839 goto efault;
10840 }
10841 }
10842 break;
10843 #endif
10844 #ifdef TARGET_NR_getresgid
10845 case TARGET_NR_setresgid:
10846 ret = get_errno(sys_setresgid(low2highgid(arg1),
10847 low2highgid(arg2),
10848 low2highgid(arg3)));
10849 break;
10850 #endif
10851 #ifdef TARGET_NR_getresgid
10852 case TARGET_NR_getresgid:
10853 {
10854 gid_t rgid, egid, sgid;
10855 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10856 if (!is_error(ret)) {
10857 if (put_user_id(high2lowgid(rgid), arg1)
10858 || put_user_id(high2lowgid(egid), arg2)
10859 || put_user_id(high2lowgid(sgid), arg3))
10860 goto efault;
10861 }
10862 }
10863 break;
10864 #endif
10865 #ifdef TARGET_NR_chown
10866 case TARGET_NR_chown:
10867 if (!(p = lock_user_string(arg1)))
10868 goto efault;
10869 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
10870 unlock_user(p, arg1, 0);
10871 break;
10872 #endif
10873 case TARGET_NR_setuid:
10874 ret = get_errno(sys_setuid(low2highuid(arg1)));
10875 break;
10876 case TARGET_NR_setgid:
10877 ret = get_errno(sys_setgid(low2highgid(arg1)));
10878 break;
10879 case TARGET_NR_setfsuid:
10880 ret = get_errno(setfsuid(arg1));
10881 break;
10882 case TARGET_NR_setfsgid:
10883 ret = get_errno(setfsgid(arg1));
10884 break;
10885
10886 #ifdef TARGET_NR_lchown32
10887 case TARGET_NR_lchown32:
10888 if (!(p = lock_user_string(arg1)))
10889 goto efault;
10890 ret = get_errno(lchown(p, arg2, arg3));
10891 unlock_user(p, arg1, 0);
10892 break;
10893 #endif
10894 #ifdef TARGET_NR_getuid32
10895 case TARGET_NR_getuid32:
10896 ret = get_errno(getuid());
10897 break;
10898 #endif
10899
10900 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
10901 /* Alpha specific */
10902 case TARGET_NR_getxuid:
10903 {
10904 uid_t euid;
10905 euid=geteuid();
10906 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
10907 }
10908 ret = get_errno(getuid());
10909 break;
10910 #endif
10911 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
10912 /* Alpha specific */
10913 case TARGET_NR_getxgid:
10914 {
10915 uid_t egid;
10916 egid=getegid();
10917 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
10918 }
10919 ret = get_errno(getgid());
10920 break;
10921 #endif
10922 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
10923 /* Alpha specific */
10924 case TARGET_NR_osf_getsysinfo:
10925 ret = -TARGET_EOPNOTSUPP;
10926 switch (arg1) {
10927 case TARGET_GSI_IEEE_FP_CONTROL:
10928 {
10929 uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env);
10930
10931 /* Copied from linux ieee_fpcr_to_swcr. */
10932 swcr = (fpcr >> 35) & SWCR_STATUS_MASK;
10933 swcr |= (fpcr >> 36) & SWCR_MAP_DMZ;
10934 swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV
10935 | SWCR_TRAP_ENABLE_DZE
10936 | SWCR_TRAP_ENABLE_OVF);
10937 swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF
10938 | SWCR_TRAP_ENABLE_INE);
10939 swcr |= (fpcr >> 47) & SWCR_MAP_UMZ;
10940 swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO;
10941
10942 if (put_user_u64 (swcr, arg2))
10943 goto efault;
10944 ret = 0;
10945 }
10946 break;
10947
10948 /* case GSI_IEEE_STATE_AT_SIGNAL:
10949 -- Not implemented in linux kernel.
10950 case GSI_UACPROC:
10951 -- Retrieves current unaligned access state; not much used.
10952 case GSI_PROC_TYPE:
10953 -- Retrieves implver information; surely not used.
10954 case GSI_GET_HWRPB:
10955 -- Grabs a copy of the HWRPB; surely not used.
10956 */
10957 }
10958 break;
10959 #endif
10960 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
10961 /* Alpha specific */
10962 case TARGET_NR_osf_setsysinfo:
10963 ret = -TARGET_EOPNOTSUPP;
10964 switch (arg1) {
10965 case TARGET_SSI_IEEE_FP_CONTROL:
10966 {
10967 uint64_t swcr, fpcr, orig_fpcr;
10968
10969 if (get_user_u64 (swcr, arg2)) {
10970 goto efault;
10971 }
10972 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
10973 fpcr = orig_fpcr & FPCR_DYN_MASK;
10974
10975 /* Copied from linux ieee_swcr_to_fpcr. */
10976 fpcr |= (swcr & SWCR_STATUS_MASK) << 35;
10977 fpcr |= (swcr & SWCR_MAP_DMZ) << 36;
10978 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV
10979 | SWCR_TRAP_ENABLE_DZE
10980 | SWCR_TRAP_ENABLE_OVF)) << 48;
10981 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF
10982 | SWCR_TRAP_ENABLE_INE)) << 57;
10983 fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0);
10984 fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41;
10985
10986 cpu_alpha_store_fpcr(cpu_env, fpcr);
10987 ret = 0;
10988 }
10989 break;
10990
10991 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
10992 {
10993 uint64_t exc, fpcr, orig_fpcr;
10994 int si_code;
10995
10996 if (get_user_u64(exc, arg2)) {
10997 goto efault;
10998 }
10999
11000 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
11001
11002 /* We only add to the exception status here. */
11003 fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35);
11004
11005 cpu_alpha_store_fpcr(cpu_env, fpcr);
11006 ret = 0;
11007
11008 /* Old exceptions are not signaled. */
11009 fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK);
11010
11011 /* If any exceptions set by this call,
11012 and are unmasked, send a signal. */
11013 si_code = 0;
11014 if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) {
11015 si_code = TARGET_FPE_FLTRES;
11016 }
11017 if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) {
11018 si_code = TARGET_FPE_FLTUND;
11019 }
11020 if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) {
11021 si_code = TARGET_FPE_FLTOVF;
11022 }
11023 if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) {
11024 si_code = TARGET_FPE_FLTDIV;
11025 }
11026 if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) {
11027 si_code = TARGET_FPE_FLTINV;
11028 }
11029 if (si_code != 0) {
11030 target_siginfo_t info;
11031 info.si_signo = SIGFPE;
11032 info.si_errno = 0;
11033 info.si_code = si_code;
11034 info._sifields._sigfault._addr
11035 = ((CPUArchState *)cpu_env)->pc;
11036 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11037 QEMU_SI_FAULT, &info);
11038 }
11039 }
11040 break;
11041
11042 /* case SSI_NVPAIRS:
11043 -- Used with SSIN_UACPROC to enable unaligned accesses.
11044 case SSI_IEEE_STATE_AT_SIGNAL:
11045 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
11046 -- Not implemented in linux kernel
11047 */
11048 }
11049 break;
11050 #endif
11051 #ifdef TARGET_NR_osf_sigprocmask
11052 /* Alpha specific. */
11053 case TARGET_NR_osf_sigprocmask:
11054 {
11055 abi_ulong mask;
11056 int how;
11057 sigset_t set, oldset;
11058
11059 switch(arg1) {
11060 case TARGET_SIG_BLOCK:
11061 how = SIG_BLOCK;
11062 break;
11063 case TARGET_SIG_UNBLOCK:
11064 how = SIG_UNBLOCK;
11065 break;
11066 case TARGET_SIG_SETMASK:
11067 how = SIG_SETMASK;
11068 break;
11069 default:
11070 ret = -TARGET_EINVAL;
11071 goto fail;
11072 }
11073 mask = arg2;
11074 target_to_host_old_sigset(&set, &mask);
11075 ret = do_sigprocmask(how, &set, &oldset);
11076 if (!ret) {
11077 host_to_target_old_sigset(&mask, &oldset);
11078 ret = mask;
11079 }
11080 }
11081 break;
11082 #endif
11083
11084 #ifdef TARGET_NR_getgid32
11085 case TARGET_NR_getgid32:
11086 ret = get_errno(getgid());
11087 break;
11088 #endif
11089 #ifdef TARGET_NR_geteuid32
11090 case TARGET_NR_geteuid32:
11091 ret = get_errno(geteuid());
11092 break;
11093 #endif
11094 #ifdef TARGET_NR_getegid32
11095 case TARGET_NR_getegid32:
11096 ret = get_errno(getegid());
11097 break;
11098 #endif
11099 #ifdef TARGET_NR_setreuid32
11100 case TARGET_NR_setreuid32:
11101 ret = get_errno(setreuid(arg1, arg2));
11102 break;
11103 #endif
11104 #ifdef TARGET_NR_setregid32
11105 case TARGET_NR_setregid32:
11106 ret = get_errno(setregid(arg1, arg2));
11107 break;
11108 #endif
11109 #ifdef TARGET_NR_getgroups32
11110 case TARGET_NR_getgroups32:
11111 {
11112 int gidsetsize = arg1;
11113 uint32_t *target_grouplist;
11114 gid_t *grouplist;
11115 int i;
11116
11117 grouplist = alloca(gidsetsize * sizeof(gid_t));
11118 ret = get_errno(getgroups(gidsetsize, grouplist));
11119 if (gidsetsize == 0)
11120 break;
11121 if (!is_error(ret)) {
11122 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
11123 if (!target_grouplist) {
11124 ret = -TARGET_EFAULT;
11125 goto fail;
11126 }
11127 for(i = 0;i < ret; i++)
11128 target_grouplist[i] = tswap32(grouplist[i]);
11129 unlock_user(target_grouplist, arg2, gidsetsize * 4);
11130 }
11131 }
11132 break;
11133 #endif
11134 #ifdef TARGET_NR_setgroups32
11135 case TARGET_NR_setgroups32:
11136 {
11137 int gidsetsize = arg1;
11138 uint32_t *target_grouplist;
11139 gid_t *grouplist;
11140 int i;
11141
11142 grouplist = alloca(gidsetsize * sizeof(gid_t));
11143 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
11144 if (!target_grouplist) {
11145 ret = -TARGET_EFAULT;
11146 goto fail;
11147 }
11148 for(i = 0;i < gidsetsize; i++)
11149 grouplist[i] = tswap32(target_grouplist[i]);
11150 unlock_user(target_grouplist, arg2, 0);
11151 ret = get_errno(setgroups(gidsetsize, grouplist));
11152 }
11153 break;
11154 #endif
11155 #ifdef TARGET_NR_fchown32
11156 case TARGET_NR_fchown32:
11157 ret = get_errno(fchown(arg1, arg2, arg3));
11158 break;
11159 #endif
11160 #ifdef TARGET_NR_setresuid32
11161 case TARGET_NR_setresuid32:
11162 ret = get_errno(sys_setresuid(arg1, arg2, arg3));
11163 break;
11164 #endif
11165 #ifdef TARGET_NR_getresuid32
11166 case TARGET_NR_getresuid32:
11167 {
11168 uid_t ruid, euid, suid;
11169 ret = get_errno(getresuid(&ruid, &euid, &suid));
11170 if (!is_error(ret)) {
11171 if (put_user_u32(ruid, arg1)
11172 || put_user_u32(euid, arg2)
11173 || put_user_u32(suid, arg3))
11174 goto efault;
11175 }
11176 }
11177 break;
11178 #endif
11179 #ifdef TARGET_NR_setresgid32
11180 case TARGET_NR_setresgid32:
11181 ret = get_errno(sys_setresgid(arg1, arg2, arg3));
11182 break;
11183 #endif
11184 #ifdef TARGET_NR_getresgid32
11185 case TARGET_NR_getresgid32:
11186 {
11187 gid_t rgid, egid, sgid;
11188 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11189 if (!is_error(ret)) {
11190 if (put_user_u32(rgid, arg1)
11191 || put_user_u32(egid, arg2)
11192 || put_user_u32(sgid, arg3))
11193 goto efault;
11194 }
11195 }
11196 break;
11197 #endif
11198 #ifdef TARGET_NR_chown32
11199 case TARGET_NR_chown32:
11200 if (!(p = lock_user_string(arg1)))
11201 goto efault;
11202 ret = get_errno(chown(p, arg2, arg3));
11203 unlock_user(p, arg1, 0);
11204 break;
11205 #endif
11206 #ifdef TARGET_NR_setuid32
11207 case TARGET_NR_setuid32:
11208 ret = get_errno(sys_setuid(arg1));
11209 break;
11210 #endif
11211 #ifdef TARGET_NR_setgid32
11212 case TARGET_NR_setgid32:
11213 ret = get_errno(sys_setgid(arg1));
11214 break;
11215 #endif
11216 #ifdef TARGET_NR_setfsuid32
11217 case TARGET_NR_setfsuid32:
11218 ret = get_errno(setfsuid(arg1));
11219 break;
11220 #endif
11221 #ifdef TARGET_NR_setfsgid32
11222 case TARGET_NR_setfsgid32:
11223 ret = get_errno(setfsgid(arg1));
11224 break;
11225 #endif
11226
11227 case TARGET_NR_pivot_root:
11228 goto unimplemented;
11229 #ifdef TARGET_NR_mincore
11230 case TARGET_NR_mincore:
11231 {
11232 void *a;
11233 ret = -TARGET_ENOMEM;
11234 a = lock_user(VERIFY_READ, arg1, arg2, 0);
11235 if (!a) {
11236 goto fail;
11237 }
11238 ret = -TARGET_EFAULT;
11239 p = lock_user_string(arg3);
11240 if (!p) {
11241 goto mincore_fail;
11242 }
11243 ret = get_errno(mincore(a, arg2, p));
11244 unlock_user(p, arg3, ret);
11245 mincore_fail:
11246 unlock_user(a, arg1, 0);
11247 }
11248 break;
11249 #endif
11250 #ifdef TARGET_NR_arm_fadvise64_64
11251 case TARGET_NR_arm_fadvise64_64:
11252 /* arm_fadvise64_64 looks like fadvise64_64 but
11253 * with different argument order: fd, advice, offset, len
11254 * rather than the usual fd, offset, len, advice.
11255 * Note that offset and len are both 64-bit so appear as
11256 * pairs of 32-bit registers.
11257 */
11258 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
11259 target_offset64(arg5, arg6), arg2);
11260 ret = -host_to_target_errno(ret);
11261 break;
11262 #endif
11263
11264 #if TARGET_ABI_BITS == 32
11265
11266 #ifdef TARGET_NR_fadvise64_64
11267 case TARGET_NR_fadvise64_64:
11268 #if defined(TARGET_PPC)
11269 /* 6 args: fd, advice, offset (high, low), len (high, low) */
11270 ret = arg2;
11271 arg2 = arg3;
11272 arg3 = arg4;
11273 arg4 = arg5;
11274 arg5 = arg6;
11275 arg6 = ret;
11276 #else
11277 /* 6 args: fd, offset (high, low), len (high, low), advice */
11278 if (regpairs_aligned(cpu_env)) {
11279 /* offset is in (3,4), len in (5,6) and advice in 7 */
11280 arg2 = arg3;
11281 arg3 = arg4;
11282 arg4 = arg5;
11283 arg5 = arg6;
11284 arg6 = arg7;
11285 }
11286 #endif
11287 ret = -host_to_target_errno(posix_fadvise(arg1,
11288 target_offset64(arg2, arg3),
11289 target_offset64(arg4, arg5),
11290 arg6));
11291 break;
11292 #endif
11293
11294 #ifdef TARGET_NR_fadvise64
11295 case TARGET_NR_fadvise64:
11296 /* 5 args: fd, offset (high, low), len, advice */
11297 if (regpairs_aligned(cpu_env)) {
11298 /* offset is in (3,4), len in 5 and advice in 6 */
11299 arg2 = arg3;
11300 arg3 = arg4;
11301 arg4 = arg5;
11302 arg5 = arg6;
11303 }
11304 ret = -host_to_target_errno(posix_fadvise(arg1,
11305 target_offset64(arg2, arg3),
11306 arg4, arg5));
11307 break;
11308 #endif
11309
11310 #else /* not a 32-bit ABI */
11311 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
11312 #ifdef TARGET_NR_fadvise64_64
11313 case TARGET_NR_fadvise64_64:
11314 #endif
11315 #ifdef TARGET_NR_fadvise64
11316 case TARGET_NR_fadvise64:
11317 #endif
11318 #ifdef TARGET_S390X
11319 switch (arg4) {
11320 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
11321 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
11322 case 6: arg4 = POSIX_FADV_DONTNEED; break;
11323 case 7: arg4 = POSIX_FADV_NOREUSE; break;
11324 default: break;
11325 }
11326 #endif
11327 ret = -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
11328 break;
11329 #endif
11330 #endif /* end of 64-bit ABI fadvise handling */
11331
11332 #ifdef TARGET_NR_madvise
11333 case TARGET_NR_madvise:
11334 /* A straight passthrough may not be safe because qemu sometimes
11335 turns private file-backed mappings into anonymous mappings.
11336 This will break MADV_DONTNEED.
11337 This is a hint, so ignoring and returning success is ok. */
11338 ret = get_errno(0);
11339 break;
11340 #endif
11341 #if TARGET_ABI_BITS == 32
11342 case TARGET_NR_fcntl64:
11343 {
11344 int cmd;
11345 struct flock64 fl;
11346 from_flock64_fn *copyfrom = copy_from_user_flock64;
11347 to_flock64_fn *copyto = copy_to_user_flock64;
11348
11349 #ifdef TARGET_ARM
11350 if (((CPUARMState *)cpu_env)->eabi) {
11351 copyfrom = copy_from_user_eabi_flock64;
11352 copyto = copy_to_user_eabi_flock64;
11353 }
11354 #endif
11355
11356 cmd = target_to_host_fcntl_cmd(arg2);
11357 if (cmd == -TARGET_EINVAL) {
11358 ret = cmd;
11359 break;
11360 }
11361
11362 switch(arg2) {
11363 case TARGET_F_GETLK64:
11364 ret = copyfrom(&fl, arg3);
11365 if (ret) {
11366 break;
11367 }
11368 ret = get_errno(fcntl(arg1, cmd, &fl));
11369 if (ret == 0) {
11370 ret = copyto(arg3, &fl);
11371 }
11372 break;
11373
11374 case TARGET_F_SETLK64:
11375 case TARGET_F_SETLKW64:
11376 ret = copyfrom(&fl, arg3);
11377 if (ret) {
11378 break;
11379 }
11380 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11381 break;
11382 default:
11383 ret = do_fcntl(arg1, arg2, arg3);
11384 break;
11385 }
11386 break;
11387 }
11388 #endif
11389 #ifdef TARGET_NR_cacheflush
11390 case TARGET_NR_cacheflush:
11391 /* self-modifying code is handled automatically, so nothing needed */
11392 ret = 0;
11393 break;
11394 #endif
11395 #ifdef TARGET_NR_security
11396 case TARGET_NR_security:
11397 goto unimplemented;
11398 #endif
11399 #ifdef TARGET_NR_getpagesize
11400 case TARGET_NR_getpagesize:
11401 ret = TARGET_PAGE_SIZE;
11402 break;
11403 #endif
11404 case TARGET_NR_gettid:
11405 ret = get_errno(gettid());
11406 break;
11407 #ifdef TARGET_NR_readahead
11408 case TARGET_NR_readahead:
11409 #if TARGET_ABI_BITS == 32
11410 if (regpairs_aligned(cpu_env)) {
11411 arg2 = arg3;
11412 arg3 = arg4;
11413 arg4 = arg5;
11414 }
11415 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
11416 #else
11417 ret = get_errno(readahead(arg1, arg2, arg3));
11418 #endif
11419 break;
11420 #endif
11421 #ifdef CONFIG_ATTR
11422 #ifdef TARGET_NR_setxattr
11423 case TARGET_NR_listxattr:
11424 case TARGET_NR_llistxattr:
11425 {
11426 void *p, *b = 0;
11427 if (arg2) {
11428 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11429 if (!b) {
11430 ret = -TARGET_EFAULT;
11431 break;
11432 }
11433 }
11434 p = lock_user_string(arg1);
11435 if (p) {
11436 if (num == TARGET_NR_listxattr) {
11437 ret = get_errno(listxattr(p, b, arg3));
11438 } else {
11439 ret = get_errno(llistxattr(p, b, arg3));
11440 }
11441 } else {
11442 ret = -TARGET_EFAULT;
11443 }
11444 unlock_user(p, arg1, 0);
11445 unlock_user(b, arg2, arg3);
11446 break;
11447 }
11448 case TARGET_NR_flistxattr:
11449 {
11450 void *b = 0;
11451 if (arg2) {
11452 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11453 if (!b) {
11454 ret = -TARGET_EFAULT;
11455 break;
11456 }
11457 }
11458 ret = get_errno(flistxattr(arg1, b, arg3));
11459 unlock_user(b, arg2, arg3);
11460 break;
11461 }
11462 case TARGET_NR_setxattr:
11463 case TARGET_NR_lsetxattr:
11464 {
11465 void *p, *n, *v = 0;
11466 if (arg3) {
11467 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11468 if (!v) {
11469 ret = -TARGET_EFAULT;
11470 break;
11471 }
11472 }
11473 p = lock_user_string(arg1);
11474 n = lock_user_string(arg2);
11475 if (p && n) {
11476 if (num == TARGET_NR_setxattr) {
11477 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11478 } else {
11479 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11480 }
11481 } else {
11482 ret = -TARGET_EFAULT;
11483 }
11484 unlock_user(p, arg1, 0);
11485 unlock_user(n, arg2, 0);
11486 unlock_user(v, arg3, 0);
11487 }
11488 break;
11489 case TARGET_NR_fsetxattr:
11490 {
11491 void *n, *v = 0;
11492 if (arg3) {
11493 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11494 if (!v) {
11495 ret = -TARGET_EFAULT;
11496 break;
11497 }
11498 }
11499 n = lock_user_string(arg2);
11500 if (n) {
11501 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11502 } else {
11503 ret = -TARGET_EFAULT;
11504 }
11505 unlock_user(n, arg2, 0);
11506 unlock_user(v, arg3, 0);
11507 }
11508 break;
11509 case TARGET_NR_getxattr:
11510 case TARGET_NR_lgetxattr:
11511 {
11512 void *p, *n, *v = 0;
11513 if (arg3) {
11514 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11515 if (!v) {
11516 ret = -TARGET_EFAULT;
11517 break;
11518 }
11519 }
11520 p = lock_user_string(arg1);
11521 n = lock_user_string(arg2);
11522 if (p && n) {
11523 if (num == TARGET_NR_getxattr) {
11524 ret = get_errno(getxattr(p, n, v, arg4));
11525 } else {
11526 ret = get_errno(lgetxattr(p, n, v, arg4));
11527 }
11528 } else {
11529 ret = -TARGET_EFAULT;
11530 }
11531 unlock_user(p, arg1, 0);
11532 unlock_user(n, arg2, 0);
11533 unlock_user(v, arg3, arg4);
11534 }
11535 break;
11536 case TARGET_NR_fgetxattr:
11537 {
11538 void *n, *v = 0;
11539 if (arg3) {
11540 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11541 if (!v) {
11542 ret = -TARGET_EFAULT;
11543 break;
11544 }
11545 }
11546 n = lock_user_string(arg2);
11547 if (n) {
11548 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11549 } else {
11550 ret = -TARGET_EFAULT;
11551 }
11552 unlock_user(n, arg2, 0);
11553 unlock_user(v, arg3, arg4);
11554 }
11555 break;
11556 case TARGET_NR_removexattr:
11557 case TARGET_NR_lremovexattr:
11558 {
11559 void *p, *n;
11560 p = lock_user_string(arg1);
11561 n = lock_user_string(arg2);
11562 if (p && n) {
11563 if (num == TARGET_NR_removexattr) {
11564 ret = get_errno(removexattr(p, n));
11565 } else {
11566 ret = get_errno(lremovexattr(p, n));
11567 }
11568 } else {
11569 ret = -TARGET_EFAULT;
11570 }
11571 unlock_user(p, arg1, 0);
11572 unlock_user(n, arg2, 0);
11573 }
11574 break;
11575 case TARGET_NR_fremovexattr:
11576 {
11577 void *n;
11578 n = lock_user_string(arg2);
11579 if (n) {
11580 ret = get_errno(fremovexattr(arg1, n));
11581 } else {
11582 ret = -TARGET_EFAULT;
11583 }
11584 unlock_user(n, arg2, 0);
11585 }
11586 break;
11587 #endif
11588 #endif /* CONFIG_ATTR */
11589 #ifdef TARGET_NR_set_thread_area
11590 case TARGET_NR_set_thread_area:
11591 #if defined(TARGET_MIPS)
11592 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
11593 ret = 0;
11594 break;
11595 #elif defined(TARGET_CRIS)
11596 if (arg1 & 0xff)
11597 ret = -TARGET_EINVAL;
11598 else {
11599 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
11600 ret = 0;
11601 }
11602 break;
11603 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
11604 ret = do_set_thread_area(cpu_env, arg1);
11605 break;
11606 #elif defined(TARGET_M68K)
11607 {
11608 TaskState *ts = cpu->opaque;
11609 ts->tp_value = arg1;
11610 ret = 0;
11611 break;
11612 }
11613 #else
11614 goto unimplemented_nowarn;
11615 #endif
11616 #endif
11617 #ifdef TARGET_NR_get_thread_area
11618 case TARGET_NR_get_thread_area:
11619 #if defined(TARGET_I386) && defined(TARGET_ABI32)
11620 ret = do_get_thread_area(cpu_env, arg1);
11621 break;
11622 #elif defined(TARGET_M68K)
11623 {
11624 TaskState *ts = cpu->opaque;
11625 ret = ts->tp_value;
11626 break;
11627 }
11628 #else
11629 goto unimplemented_nowarn;
11630 #endif
11631 #endif
11632 #ifdef TARGET_NR_getdomainname
11633 case TARGET_NR_getdomainname:
11634 goto unimplemented_nowarn;
11635 #endif
11636
11637 #ifdef TARGET_NR_clock_gettime
11638 case TARGET_NR_clock_gettime:
11639 {
11640 struct timespec ts;
11641 ret = get_errno(clock_gettime(arg1, &ts));
11642 if (!is_error(ret)) {
11643 host_to_target_timespec(arg2, &ts);
11644 }
11645 break;
11646 }
11647 #endif
11648 #ifdef TARGET_NR_clock_getres
11649 case TARGET_NR_clock_getres:
11650 {
11651 struct timespec ts;
11652 ret = get_errno(clock_getres(arg1, &ts));
11653 if (!is_error(ret)) {
11654 host_to_target_timespec(arg2, &ts);
11655 }
11656 break;
11657 }
11658 #endif
11659 #ifdef TARGET_NR_clock_nanosleep
11660 case TARGET_NR_clock_nanosleep:
11661 {
11662 struct timespec ts;
11663 target_to_host_timespec(&ts, arg3);
11664 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
11665 &ts, arg4 ? &ts : NULL));
11666 if (arg4)
11667 host_to_target_timespec(arg4, &ts);
11668
11669 #if defined(TARGET_PPC)
11670 /* clock_nanosleep is odd in that it returns positive errno values.
11671 * On PPC, CR0 bit 3 should be set in such a situation. */
11672 if (ret && ret != -TARGET_ERESTARTSYS) {
11673 ((CPUPPCState *)cpu_env)->crf[0] |= 1;
11674 }
11675 #endif
11676 break;
11677 }
11678 #endif
11679
11680 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
11681 case TARGET_NR_set_tid_address:
11682 ret = get_errno(set_tid_address((int *)g2h(arg1)));
11683 break;
11684 #endif
11685
11686 case TARGET_NR_tkill:
11687 ret = get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
11688 break;
11689
11690 case TARGET_NR_tgkill:
11691 ret = get_errno(safe_tgkill((int)arg1, (int)arg2,
11692 target_to_host_signal(arg3)));
11693 break;
11694
11695 #ifdef TARGET_NR_set_robust_list
11696 case TARGET_NR_set_robust_list:
11697 case TARGET_NR_get_robust_list:
11698 /* The ABI for supporting robust futexes has userspace pass
11699 * the kernel a pointer to a linked list which is updated by
11700 * userspace after the syscall; the list is walked by the kernel
11701 * when the thread exits. Since the linked list in QEMU guest
11702 * memory isn't a valid linked list for the host and we have
11703 * no way to reliably intercept the thread-death event, we can't
11704 * support these. Silently return ENOSYS so that guest userspace
11705 * falls back to a non-robust futex implementation (which should
11706 * be OK except in the corner case of the guest crashing while
11707 * holding a mutex that is shared with another process via
11708 * shared memory).
11709 */
11710 goto unimplemented_nowarn;
11711 #endif
11712
11713 #if defined(TARGET_NR_utimensat)
11714 case TARGET_NR_utimensat:
11715 {
11716 struct timespec *tsp, ts[2];
11717 if (!arg3) {
11718 tsp = NULL;
11719 } else {
11720 target_to_host_timespec(ts, arg3);
11721 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec));
11722 tsp = ts;
11723 }
11724 if (!arg2)
11725 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
11726 else {
11727 if (!(p = lock_user_string(arg2))) {
11728 ret = -TARGET_EFAULT;
11729 goto fail;
11730 }
11731 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
11732 unlock_user(p, arg2, 0);
11733 }
11734 }
11735 break;
11736 #endif
11737 case TARGET_NR_futex:
11738 ret = do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
11739 break;
11740 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
11741 case TARGET_NR_inotify_init:
11742 ret = get_errno(sys_inotify_init());
11743 fd_trans_register(ret, &target_inotify_trans);
11744 break;
11745 #endif
11746 #ifdef CONFIG_INOTIFY1
11747 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
11748 case TARGET_NR_inotify_init1:
11749 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
11750 fcntl_flags_tbl)));
11751 fd_trans_register(ret, &target_inotify_trans);
11752 break;
11753 #endif
11754 #endif
11755 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
11756 case TARGET_NR_inotify_add_watch:
11757 p = lock_user_string(arg2);
11758 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
11759 unlock_user(p, arg2, 0);
11760 break;
11761 #endif
11762 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
11763 case TARGET_NR_inotify_rm_watch:
11764 ret = get_errno(sys_inotify_rm_watch(arg1, arg2));
11765 break;
11766 #endif
11767
11768 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
11769 case TARGET_NR_mq_open:
11770 {
11771 struct mq_attr posix_mq_attr;
11772 struct mq_attr *pposix_mq_attr;
11773 int host_flags;
11774
11775 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
11776 pposix_mq_attr = NULL;
11777 if (arg4) {
11778 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
11779 goto efault;
11780 }
11781 pposix_mq_attr = &posix_mq_attr;
11782 }
11783 p = lock_user_string(arg1 - 1);
11784 if (!p) {
11785 goto efault;
11786 }
11787 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
11788 unlock_user (p, arg1, 0);
11789 }
11790 break;
11791
11792 case TARGET_NR_mq_unlink:
11793 p = lock_user_string(arg1 - 1);
11794 if (!p) {
11795 ret = -TARGET_EFAULT;
11796 break;
11797 }
11798 ret = get_errno(mq_unlink(p));
11799 unlock_user (p, arg1, 0);
11800 break;
11801
11802 case TARGET_NR_mq_timedsend:
11803 {
11804 struct timespec ts;
11805
11806 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11807 if (arg5 != 0) {
11808 target_to_host_timespec(&ts, arg5);
11809 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
11810 host_to_target_timespec(arg5, &ts);
11811 } else {
11812 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
11813 }
11814 unlock_user (p, arg2, arg3);
11815 }
11816 break;
11817
11818 case TARGET_NR_mq_timedreceive:
11819 {
11820 struct timespec ts;
11821 unsigned int prio;
11822
11823 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11824 if (arg5 != 0) {
11825 target_to_host_timespec(&ts, arg5);
11826 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11827 &prio, &ts));
11828 host_to_target_timespec(arg5, &ts);
11829 } else {
11830 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11831 &prio, NULL));
11832 }
11833 unlock_user (p, arg2, arg3);
11834 if (arg4 != 0)
11835 put_user_u32(prio, arg4);
11836 }
11837 break;
11838
11839 /* Not implemented for now... */
11840 /* case TARGET_NR_mq_notify: */
11841 /* break; */
11842
11843 case TARGET_NR_mq_getsetattr:
11844 {
11845 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
11846 ret = 0;
11847 if (arg3 != 0) {
11848 ret = mq_getattr(arg1, &posix_mq_attr_out);
11849 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
11850 }
11851 if (arg2 != 0) {
11852 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
11853 ret |= mq_setattr(arg1, &posix_mq_attr_in, &posix_mq_attr_out);
11854 }
11855
11856 }
11857 break;
11858 #endif
11859
11860 #ifdef CONFIG_SPLICE
11861 #ifdef TARGET_NR_tee
11862 case TARGET_NR_tee:
11863 {
11864 ret = get_errno(tee(arg1,arg2,arg3,arg4));
11865 }
11866 break;
11867 #endif
11868 #ifdef TARGET_NR_splice
11869 case TARGET_NR_splice:
11870 {
11871 loff_t loff_in, loff_out;
11872 loff_t *ploff_in = NULL, *ploff_out = NULL;
11873 if (arg2) {
11874 if (get_user_u64(loff_in, arg2)) {
11875 goto efault;
11876 }
11877 ploff_in = &loff_in;
11878 }
11879 if (arg4) {
11880 if (get_user_u64(loff_out, arg4)) {
11881 goto efault;
11882 }
11883 ploff_out = &loff_out;
11884 }
11885 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
11886 if (arg2) {
11887 if (put_user_u64(loff_in, arg2)) {
11888 goto efault;
11889 }
11890 }
11891 if (arg4) {
11892 if (put_user_u64(loff_out, arg4)) {
11893 goto efault;
11894 }
11895 }
11896 }
11897 break;
11898 #endif
11899 #ifdef TARGET_NR_vmsplice
11900 case TARGET_NR_vmsplice:
11901 {
11902 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11903 if (vec != NULL) {
11904 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
11905 unlock_iovec(vec, arg2, arg3, 0);
11906 } else {
11907 ret = -host_to_target_errno(errno);
11908 }
11909 }
11910 break;
11911 #endif
11912 #endif /* CONFIG_SPLICE */
11913 #ifdef CONFIG_EVENTFD
11914 #if defined(TARGET_NR_eventfd)
11915 case TARGET_NR_eventfd:
11916 ret = get_errno(eventfd(arg1, 0));
11917 fd_trans_register(ret, &target_eventfd_trans);
11918 break;
11919 #endif
11920 #if defined(TARGET_NR_eventfd2)
11921 case TARGET_NR_eventfd2:
11922 {
11923 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
11924 if (arg2 & TARGET_O_NONBLOCK) {
11925 host_flags |= O_NONBLOCK;
11926 }
11927 if (arg2 & TARGET_O_CLOEXEC) {
11928 host_flags |= O_CLOEXEC;
11929 }
11930 ret = get_errno(eventfd(arg1, host_flags));
11931 fd_trans_register(ret, &target_eventfd_trans);
11932 break;
11933 }
11934 #endif
11935 #endif /* CONFIG_EVENTFD */
11936 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
11937 case TARGET_NR_fallocate:
11938 #if TARGET_ABI_BITS == 32
11939 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
11940 target_offset64(arg5, arg6)));
11941 #else
11942 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
11943 #endif
11944 break;
11945 #endif
11946 #if defined(CONFIG_SYNC_FILE_RANGE)
11947 #if defined(TARGET_NR_sync_file_range)
11948 case TARGET_NR_sync_file_range:
11949 #if TARGET_ABI_BITS == 32
11950 #if defined(TARGET_MIPS)
11951 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11952 target_offset64(arg5, arg6), arg7));
11953 #else
11954 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
11955 target_offset64(arg4, arg5), arg6));
11956 #endif /* !TARGET_MIPS */
11957 #else
11958 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
11959 #endif
11960 break;
11961 #endif
11962 #if defined(TARGET_NR_sync_file_range2)
11963 case TARGET_NR_sync_file_range2:
11964 /* This is like sync_file_range but the arguments are reordered */
11965 #if TARGET_ABI_BITS == 32
11966 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11967 target_offset64(arg5, arg6), arg2));
11968 #else
11969 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
11970 #endif
11971 break;
11972 #endif
11973 #endif
11974 #if defined(TARGET_NR_signalfd4)
11975 case TARGET_NR_signalfd4:
11976 ret = do_signalfd4(arg1, arg2, arg4);
11977 break;
11978 #endif
11979 #if defined(TARGET_NR_signalfd)
11980 case TARGET_NR_signalfd:
11981 ret = do_signalfd4(arg1, arg2, 0);
11982 break;
11983 #endif
11984 #if defined(CONFIG_EPOLL)
11985 #if defined(TARGET_NR_epoll_create)
11986 case TARGET_NR_epoll_create:
11987 ret = get_errno(epoll_create(arg1));
11988 break;
11989 #endif
11990 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
11991 case TARGET_NR_epoll_create1:
11992 ret = get_errno(epoll_create1(arg1));
11993 break;
11994 #endif
11995 #if defined(TARGET_NR_epoll_ctl)
11996 case TARGET_NR_epoll_ctl:
11997 {
11998 struct epoll_event ep;
11999 struct epoll_event *epp = 0;
12000 if (arg4) {
12001 struct target_epoll_event *target_ep;
12002 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
12003 goto efault;
12004 }
12005 ep.events = tswap32(target_ep->events);
12006 /* The epoll_data_t union is just opaque data to the kernel,
12007 * so we transfer all 64 bits across and need not worry what
12008 * actual data type it is.
12009 */
12010 ep.data.u64 = tswap64(target_ep->data.u64);
12011 unlock_user_struct(target_ep, arg4, 0);
12012 epp = &ep;
12013 }
12014 ret = get_errno(epoll_ctl(arg1, arg2, arg3, epp));
12015 break;
12016 }
12017 #endif
12018
12019 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
12020 #if defined(TARGET_NR_epoll_wait)
12021 case TARGET_NR_epoll_wait:
12022 #endif
12023 #if defined(TARGET_NR_epoll_pwait)
12024 case TARGET_NR_epoll_pwait:
12025 #endif
12026 {
12027 struct target_epoll_event *target_ep;
12028 struct epoll_event *ep;
12029 int epfd = arg1;
12030 int maxevents = arg3;
12031 int timeout = arg4;
12032
12033 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
12034 ret = -TARGET_EINVAL;
12035 break;
12036 }
12037
12038 target_ep = lock_user(VERIFY_WRITE, arg2,
12039 maxevents * sizeof(struct target_epoll_event), 1);
12040 if (!target_ep) {
12041 goto efault;
12042 }
12043
12044 ep = g_try_new(struct epoll_event, maxevents);
12045 if (!ep) {
12046 unlock_user(target_ep, arg2, 0);
12047 ret = -TARGET_ENOMEM;
12048 break;
12049 }
12050
12051 switch (num) {
12052 #if defined(TARGET_NR_epoll_pwait)
12053 case TARGET_NR_epoll_pwait:
12054 {
12055 target_sigset_t *target_set;
12056 sigset_t _set, *set = &_set;
12057
12058 if (arg5) {
12059 if (arg6 != sizeof(target_sigset_t)) {
12060 ret = -TARGET_EINVAL;
12061 break;
12062 }
12063
12064 target_set = lock_user(VERIFY_READ, arg5,
12065 sizeof(target_sigset_t), 1);
12066 if (!target_set) {
12067 ret = -TARGET_EFAULT;
12068 break;
12069 }
12070 target_to_host_sigset(set, target_set);
12071 unlock_user(target_set, arg5, 0);
12072 } else {
12073 set = NULL;
12074 }
12075
12076 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12077 set, SIGSET_T_SIZE));
12078 break;
12079 }
12080 #endif
12081 #if defined(TARGET_NR_epoll_wait)
12082 case TARGET_NR_epoll_wait:
12083 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12084 NULL, 0));
12085 break;
12086 #endif
12087 default:
12088 ret = -TARGET_ENOSYS;
12089 }
12090 if (!is_error(ret)) {
12091 int i;
12092 for (i = 0; i < ret; i++) {
12093 target_ep[i].events = tswap32(ep[i].events);
12094 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
12095 }
12096 unlock_user(target_ep, arg2,
12097 ret * sizeof(struct target_epoll_event));
12098 } else {
12099 unlock_user(target_ep, arg2, 0);
12100 }
12101 g_free(ep);
12102 break;
12103 }
12104 #endif
12105 #endif
12106 #ifdef TARGET_NR_prlimit64
12107 case TARGET_NR_prlimit64:
12108 {
12109 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
12110 struct target_rlimit64 *target_rnew, *target_rold;
12111 struct host_rlimit64 rnew, rold, *rnewp = 0;
12112 int resource = target_to_host_resource(arg2);
12113 if (arg3) {
12114 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
12115 goto efault;
12116 }
12117 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
12118 rnew.rlim_max = tswap64(target_rnew->rlim_max);
12119 unlock_user_struct(target_rnew, arg3, 0);
12120 rnewp = &rnew;
12121 }
12122
12123 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
12124 if (!is_error(ret) && arg4) {
12125 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
12126 goto efault;
12127 }
12128 target_rold->rlim_cur = tswap64(rold.rlim_cur);
12129 target_rold->rlim_max = tswap64(rold.rlim_max);
12130 unlock_user_struct(target_rold, arg4, 1);
12131 }
12132 break;
12133 }
12134 #endif
12135 #ifdef TARGET_NR_gethostname
12136 case TARGET_NR_gethostname:
12137 {
12138 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
12139 if (name) {
12140 ret = get_errno(gethostname(name, arg2));
12141 unlock_user(name, arg1, arg2);
12142 } else {
12143 ret = -TARGET_EFAULT;
12144 }
12145 break;
12146 }
12147 #endif
12148 #ifdef TARGET_NR_atomic_cmpxchg_32
12149 case TARGET_NR_atomic_cmpxchg_32:
12150 {
12151 /* should use start_exclusive from main.c */
12152 abi_ulong mem_value;
12153 if (get_user_u32(mem_value, arg6)) {
12154 target_siginfo_t info;
12155 info.si_signo = SIGSEGV;
12156 info.si_errno = 0;
12157 info.si_code = TARGET_SEGV_MAPERR;
12158 info._sifields._sigfault._addr = arg6;
12159 queue_signal((CPUArchState *)cpu_env, info.si_signo,
12160 QEMU_SI_FAULT, &info);
12161 ret = 0xdeadbeef;
12162
12163 }
12164 if (mem_value == arg2)
12165 put_user_u32(arg1, arg6);
12166 ret = mem_value;
12167 break;
12168 }
12169 #endif
12170 #ifdef TARGET_NR_atomic_barrier
12171 case TARGET_NR_atomic_barrier:
12172 {
12173 /* Like the kernel implementation and the qemu arm barrier, no-op this? */
12174 ret = 0;
12175 break;
12176 }
12177 #endif
12178
12179 #ifdef TARGET_NR_timer_create
12180 case TARGET_NR_timer_create:
12181 {
12182 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
12183
12184 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
12185
12186 int clkid = arg1;
12187 int timer_index = next_free_host_timer();
12188
12189 if (timer_index < 0) {
12190 ret = -TARGET_EAGAIN;
12191 } else {
12192 timer_t *phtimer = g_posix_timers + timer_index;
12193
12194 if (arg2) {
12195 phost_sevp = &host_sevp;
12196 ret = target_to_host_sigevent(phost_sevp, arg2);
12197 if (ret != 0) {
12198 break;
12199 }
12200 }
12201
12202 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
12203 if (ret) {
12204 phtimer = NULL;
12205 } else {
12206 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
12207 goto efault;
12208 }
12209 }
12210 }
12211 break;
12212 }
12213 #endif
12214
12215 #ifdef TARGET_NR_timer_settime
12216 case TARGET_NR_timer_settime:
12217 {
12218 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
12219 * struct itimerspec * old_value */
12220 target_timer_t timerid = get_timer_id(arg1);
12221
12222 if (timerid < 0) {
12223 ret = timerid;
12224 } else if (arg3 == 0) {
12225 ret = -TARGET_EINVAL;
12226 } else {
12227 timer_t htimer = g_posix_timers[timerid];
12228 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12229
12230 if (target_to_host_itimerspec(&hspec_new, arg3)) {
12231 goto efault;
12232 }
12233 ret = get_errno(
12234 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12235 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
12236 goto efault;
12237 }
12238 }
12239 break;
12240 }
12241 #endif
12242
12243 #ifdef TARGET_NR_timer_gettime
12244 case TARGET_NR_timer_gettime:
12245 {
12246 /* args: timer_t timerid, struct itimerspec *curr_value */
12247 target_timer_t timerid = get_timer_id(arg1);
12248
12249 if (timerid < 0) {
12250 ret = timerid;
12251 } else if (!arg2) {
12252 ret = -TARGET_EFAULT;
12253 } else {
12254 timer_t htimer = g_posix_timers[timerid];
12255 struct itimerspec hspec;
12256 ret = get_errno(timer_gettime(htimer, &hspec));
12257
12258 if (host_to_target_itimerspec(arg2, &hspec)) {
12259 ret = -TARGET_EFAULT;
12260 }
12261 }
12262 break;
12263 }
12264 #endif
12265
12266 #ifdef TARGET_NR_timer_getoverrun
12267 case TARGET_NR_timer_getoverrun:
12268 {
12269 /* args: timer_t timerid */
12270 target_timer_t timerid = get_timer_id(arg1);
12271
12272 if (timerid < 0) {
12273 ret = timerid;
12274 } else {
12275 timer_t htimer = g_posix_timers[timerid];
12276 ret = get_errno(timer_getoverrun(htimer));
12277 }
12278 fd_trans_unregister(ret);
12279 break;
12280 }
12281 #endif
12282
12283 #ifdef TARGET_NR_timer_delete
12284 case TARGET_NR_timer_delete:
12285 {
12286 /* args: timer_t timerid */
12287 target_timer_t timerid = get_timer_id(arg1);
12288
12289 if (timerid < 0) {
12290 ret = timerid;
12291 } else {
12292 timer_t htimer = g_posix_timers[timerid];
12293 ret = get_errno(timer_delete(htimer));
12294 g_posix_timers[timerid] = 0;
12295 }
12296 break;
12297 }
12298 #endif
12299
12300 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
12301 case TARGET_NR_timerfd_create:
12302 ret = get_errno(timerfd_create(arg1,
12303 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
12304 break;
12305 #endif
12306
12307 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
12308 case TARGET_NR_timerfd_gettime:
12309 {
12310 struct itimerspec its_curr;
12311
12312 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12313
12314 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
12315 goto efault;
12316 }
12317 }
12318 break;
12319 #endif
12320
12321 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
12322 case TARGET_NR_timerfd_settime:
12323 {
12324 struct itimerspec its_new, its_old, *p_new;
12325
12326 if (arg3) {
12327 if (target_to_host_itimerspec(&its_new, arg3)) {
12328 goto efault;
12329 }
12330 p_new = &its_new;
12331 } else {
12332 p_new = NULL;
12333 }
12334
12335 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12336
12337 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
12338 goto efault;
12339 }
12340 }
12341 break;
12342 #endif
12343
12344 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
12345 case TARGET_NR_ioprio_get:
12346 ret = get_errno(ioprio_get(arg1, arg2));
12347 break;
12348 #endif
12349
12350 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
12351 case TARGET_NR_ioprio_set:
12352 ret = get_errno(ioprio_set(arg1, arg2, arg3));
12353 break;
12354 #endif
12355
12356 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
12357 case TARGET_NR_setns:
12358 ret = get_errno(setns(arg1, arg2));
12359 break;
12360 #endif
12361 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
12362 case TARGET_NR_unshare:
12363 ret = get_errno(unshare(arg1));
12364 break;
12365 #endif
12366 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
12367 case TARGET_NR_kcmp:
12368 ret = get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
12369 break;
12370 #endif
12371
12372 default:
12373 unimplemented:
12374 gemu_log("qemu: Unsupported syscall: %d\n", num);
12375 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list)
12376 unimplemented_nowarn:
12377 #endif
12378 ret = -TARGET_ENOSYS;
12379 break;
12380 }
12381 fail:
12382 #ifdef DEBUG
12383 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
12384 #endif
12385 if(do_strace)
12386 print_syscall_ret(num, ret);
12387 trace_guest_user_syscall_ret(cpu, num, ret);
12388 return ret;
12389 efault:
12390 ret = -TARGET_EFAULT;
12391 goto fail;
12392 }
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