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block: Block all intermediate nodes in commit_active_start()
[qemu/ericb.git] / linux-user / syscall.c
blob7b77503f94f4fe28f2ed20c25dde205a5f68366b
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 "qemu-common.h"
61 #ifdef CONFIG_TIMERFD
62 #include <sys/timerfd.h>
63 #endif
64 #ifdef TARGET_GPROF
65 #include <sys/gmon.h>
66 #endif
67 #ifdef CONFIG_EVENTFD
68 #include <sys/eventfd.h>
69 #endif
70 #ifdef CONFIG_EPOLL
71 #include <sys/epoll.h>
72 #endif
73 #ifdef CONFIG_ATTR
74 #include "qemu/xattr.h"
75 #endif
76 #ifdef CONFIG_SENDFILE
77 #include <sys/sendfile.h>
78 #endif
79
80 #define termios host_termios
81 #define winsize host_winsize
82 #define termio host_termio
83 #define sgttyb host_sgttyb /* same as target */
84 #define tchars host_tchars /* same as target */
85 #define ltchars host_ltchars /* same as target */
86
87 #include <linux/termios.h>
88 #include <linux/unistd.h>
89 #include <linux/cdrom.h>
90 #include <linux/hdreg.h>
91 #include <linux/soundcard.h>
92 #include <linux/kd.h>
93 #include <linux/mtio.h>
94 #include <linux/fs.h>
95 #if defined(CONFIG_FIEMAP)
96 #include <linux/fiemap.h>
97 #endif
98 #include <linux/fb.h>
99 #include <linux/vt.h>
100 #include <linux/dm-ioctl.h>
101 #include <linux/reboot.h>
102 #include <linux/route.h>
103 #include <linux/filter.h>
104 #include <linux/blkpg.h>
105 #include <netpacket/packet.h>
106 #include <linux/netlink.h>
107 #ifdef CONFIG_RTNETLINK
108 #include <linux/rtnetlink.h>
109 #include <linux/if_bridge.h>
110 #endif
111 #include <linux/audit.h>
112 #include "linux_loop.h"
113 #include "uname.h"
114
115 #include "qemu.h"
116
117 #ifndef CLONE_IO
118 #define CLONE_IO 0x80000000 /* Clone io context */
119 #endif
120
121 /* We can't directly call the host clone syscall, because this will
122 * badly confuse libc (breaking mutexes, for example). So we must
123 * divide clone flags into:
124 * * flag combinations that look like pthread_create()
125 * * flag combinations that look like fork()
126 * * flags we can implement within QEMU itself
127 * * flags we can't support and will return an error for
128 */
129 /* For thread creation, all these flags must be present; for
130 * fork, none must be present.
131 */
132 #define CLONE_THREAD_FLAGS \
133 (CLONE_VM | CLONE_FS | CLONE_FILES | \
134 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
135
136 /* These flags are ignored:
137 * CLONE_DETACHED is now ignored by the kernel;
138 * CLONE_IO is just an optimisation hint to the I/O scheduler
139 */
140 #define CLONE_IGNORED_FLAGS \
141 (CLONE_DETACHED | CLONE_IO)
142
143 /* Flags for fork which we can implement within QEMU itself */
144 #define CLONE_OPTIONAL_FORK_FLAGS \
145 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
146 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
147
148 /* Flags for thread creation which we can implement within QEMU itself */
149 #define CLONE_OPTIONAL_THREAD_FLAGS \
150 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
151 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
152
153 #define CLONE_INVALID_FORK_FLAGS \
154 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
155
156 #define CLONE_INVALID_THREAD_FLAGS \
157 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
158 CLONE_IGNORED_FLAGS))
159
160 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
161 * have almost all been allocated. We cannot support any of
162 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
163 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
164 * The checks against the invalid thread masks above will catch these.
165 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
166 */
167
168 //#define DEBUG
169 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
170 * once. This exercises the codepaths for restart.
171 */
172 //#define DEBUG_ERESTARTSYS
173
174 //#include <linux/msdos_fs.h>
175 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
176 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
177
178 #undef _syscall0
179 #undef _syscall1
180 #undef _syscall2
181 #undef _syscall3
182 #undef _syscall4
183 #undef _syscall5
184 #undef _syscall6
185
186 #define _syscall0(type,name) \
187 static type name (void) \
188 { \
189 return syscall(__NR_##name); \
190 }
191
192 #define _syscall1(type,name,type1,arg1) \
193 static type name (type1 arg1) \
194 { \
195 return syscall(__NR_##name, arg1); \
196 }
197
198 #define _syscall2(type,name,type1,arg1,type2,arg2) \
199 static type name (type1 arg1,type2 arg2) \
200 { \
201 return syscall(__NR_##name, arg1, arg2); \
202 }
203
204 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
205 static type name (type1 arg1,type2 arg2,type3 arg3) \
206 { \
207 return syscall(__NR_##name, arg1, arg2, arg3); \
208 }
209
210 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
211 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
212 { \
213 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
214 }
215
216 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
217 type5,arg5) \
218 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
219 { \
220 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
221 }
222
223
224 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
225 type5,arg5,type6,arg6) \
226 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
227 type6 arg6) \
228 { \
229 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
230 }
231
232
233 #define __NR_sys_uname __NR_uname
234 #define __NR_sys_getcwd1 __NR_getcwd
235 #define __NR_sys_getdents __NR_getdents
236 #define __NR_sys_getdents64 __NR_getdents64
237 #define __NR_sys_getpriority __NR_getpriority
238 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
239 #define __NR_sys_syslog __NR_syslog
240 #define __NR_sys_futex __NR_futex
241 #define __NR_sys_inotify_init __NR_inotify_init
242 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
243 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
244
245 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \
246 defined(__s390x__)
247 #define __NR__llseek __NR_lseek
248 #endif
249
250 /* Newer kernel ports have llseek() instead of _llseek() */
251 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
252 #define TARGET_NR__llseek TARGET_NR_llseek
253 #endif
254
255 #ifdef __NR_gettid
256 _syscall0(int, gettid)
257 #else
258 /* This is a replacement for the host gettid() and must return a host
259 errno. */
260 static int gettid(void) {
261 return -ENOSYS;
262 }
263 #endif
264 #if defined(TARGET_NR_getdents) && defined(__NR_getdents)
265 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
266 #endif
267 #if !defined(__NR_getdents) || \
268 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
269 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
270 #endif
271 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
272 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
273 loff_t *, res, uint, wh);
274 #endif
275 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
276 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
277 #ifdef __NR_exit_group
278 _syscall1(int,exit_group,int,error_code)
279 #endif
280 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
281 _syscall1(int,set_tid_address,int *,tidptr)
282 #endif
283 #if defined(TARGET_NR_futex) && defined(__NR_futex)
284 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
285 const struct timespec *,timeout,int *,uaddr2,int,val3)
286 #endif
287 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
288 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
289 unsigned long *, user_mask_ptr);
290 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
291 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
292 unsigned long *, user_mask_ptr);
293 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
294 void *, arg);
295 _syscall2(int, capget, struct __user_cap_header_struct *, header,
296 struct __user_cap_data_struct *, data);
297 _syscall2(int, capset, struct __user_cap_header_struct *, header,
298 struct __user_cap_data_struct *, data);
299 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
300 _syscall2(int, ioprio_get, int, which, int, who)
301 #endif
302 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
303 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
304 #endif
305 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
306 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
307 #endif
308
309 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
310 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
311 unsigned long, idx1, unsigned long, idx2)
312 #endif
313
314 static bitmask_transtbl fcntl_flags_tbl[] = {
315 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
316 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
317 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
318 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
319 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
320 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
321 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
322 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
323 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
324 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
325 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
326 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
327 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
328 #if defined(O_DIRECT)
329 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
330 #endif
331 #if defined(O_NOATIME)
332 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
333 #endif
334 #if defined(O_CLOEXEC)
335 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
336 #endif
337 #if defined(O_PATH)
338 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
339 #endif
340 /* Don't terminate the list prematurely on 64-bit host+guest. */
341 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
342 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
343 #endif
344 { 0, 0, 0, 0 }
345 };
346
347 enum {
348 QEMU_IFLA_BR_UNSPEC,
349 QEMU_IFLA_BR_FORWARD_DELAY,
350 QEMU_IFLA_BR_HELLO_TIME,
351 QEMU_IFLA_BR_MAX_AGE,
352 QEMU_IFLA_BR_AGEING_TIME,
353 QEMU_IFLA_BR_STP_STATE,
354 QEMU_IFLA_BR_PRIORITY,
355 QEMU_IFLA_BR_VLAN_FILTERING,
356 QEMU_IFLA_BR_VLAN_PROTOCOL,
357 QEMU_IFLA_BR_GROUP_FWD_MASK,
358 QEMU_IFLA_BR_ROOT_ID,
359 QEMU_IFLA_BR_BRIDGE_ID,
360 QEMU_IFLA_BR_ROOT_PORT,
361 QEMU_IFLA_BR_ROOT_PATH_COST,
362 QEMU_IFLA_BR_TOPOLOGY_CHANGE,
363 QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
364 QEMU_IFLA_BR_HELLO_TIMER,
365 QEMU_IFLA_BR_TCN_TIMER,
366 QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER,
367 QEMU_IFLA_BR_GC_TIMER,
368 QEMU_IFLA_BR_GROUP_ADDR,
369 QEMU_IFLA_BR_FDB_FLUSH,
370 QEMU_IFLA_BR_MCAST_ROUTER,
371 QEMU_IFLA_BR_MCAST_SNOOPING,
372 QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR,
373 QEMU_IFLA_BR_MCAST_QUERIER,
374 QEMU_IFLA_BR_MCAST_HASH_ELASTICITY,
375 QEMU_IFLA_BR_MCAST_HASH_MAX,
376 QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT,
377 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT,
378 QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL,
379 QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL,
380 QEMU_IFLA_BR_MCAST_QUERIER_INTVL,
381 QEMU_IFLA_BR_MCAST_QUERY_INTVL,
382 QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL,
383 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL,
384 QEMU_IFLA_BR_NF_CALL_IPTABLES,
385 QEMU_IFLA_BR_NF_CALL_IP6TABLES,
386 QEMU_IFLA_BR_NF_CALL_ARPTABLES,
387 QEMU_IFLA_BR_VLAN_DEFAULT_PVID,
388 QEMU_IFLA_BR_PAD,
389 QEMU_IFLA_BR_VLAN_STATS_ENABLED,
390 QEMU_IFLA_BR_MCAST_STATS_ENABLED,
391 QEMU___IFLA_BR_MAX,
392 };
393
394 enum {
395 QEMU_IFLA_UNSPEC,
396 QEMU_IFLA_ADDRESS,
397 QEMU_IFLA_BROADCAST,
398 QEMU_IFLA_IFNAME,
399 QEMU_IFLA_MTU,
400 QEMU_IFLA_LINK,
401 QEMU_IFLA_QDISC,
402 QEMU_IFLA_STATS,
403 QEMU_IFLA_COST,
404 QEMU_IFLA_PRIORITY,
405 QEMU_IFLA_MASTER,
406 QEMU_IFLA_WIRELESS,
407 QEMU_IFLA_PROTINFO,
408 QEMU_IFLA_TXQLEN,
409 QEMU_IFLA_MAP,
410 QEMU_IFLA_WEIGHT,
411 QEMU_IFLA_OPERSTATE,
412 QEMU_IFLA_LINKMODE,
413 QEMU_IFLA_LINKINFO,
414 QEMU_IFLA_NET_NS_PID,
415 QEMU_IFLA_IFALIAS,
416 QEMU_IFLA_NUM_VF,
417 QEMU_IFLA_VFINFO_LIST,
418 QEMU_IFLA_STATS64,
419 QEMU_IFLA_VF_PORTS,
420 QEMU_IFLA_PORT_SELF,
421 QEMU_IFLA_AF_SPEC,
422 QEMU_IFLA_GROUP,
423 QEMU_IFLA_NET_NS_FD,
424 QEMU_IFLA_EXT_MASK,
425 QEMU_IFLA_PROMISCUITY,
426 QEMU_IFLA_NUM_TX_QUEUES,
427 QEMU_IFLA_NUM_RX_QUEUES,
428 QEMU_IFLA_CARRIER,
429 QEMU_IFLA_PHYS_PORT_ID,
430 QEMU_IFLA_CARRIER_CHANGES,
431 QEMU_IFLA_PHYS_SWITCH_ID,
432 QEMU_IFLA_LINK_NETNSID,
433 QEMU_IFLA_PHYS_PORT_NAME,
434 QEMU_IFLA_PROTO_DOWN,
435 QEMU_IFLA_GSO_MAX_SEGS,
436 QEMU_IFLA_GSO_MAX_SIZE,
437 QEMU_IFLA_PAD,
438 QEMU_IFLA_XDP,
439 QEMU___IFLA_MAX
440 };
441
442 enum {
443 QEMU_IFLA_BRPORT_UNSPEC,
444 QEMU_IFLA_BRPORT_STATE,
445 QEMU_IFLA_BRPORT_PRIORITY,
446 QEMU_IFLA_BRPORT_COST,
447 QEMU_IFLA_BRPORT_MODE,
448 QEMU_IFLA_BRPORT_GUARD,
449 QEMU_IFLA_BRPORT_PROTECT,
450 QEMU_IFLA_BRPORT_FAST_LEAVE,
451 QEMU_IFLA_BRPORT_LEARNING,
452 QEMU_IFLA_BRPORT_UNICAST_FLOOD,
453 QEMU_IFLA_BRPORT_PROXYARP,
454 QEMU_IFLA_BRPORT_LEARNING_SYNC,
455 QEMU_IFLA_BRPORT_PROXYARP_WIFI,
456 QEMU_IFLA_BRPORT_ROOT_ID,
457 QEMU_IFLA_BRPORT_BRIDGE_ID,
458 QEMU_IFLA_BRPORT_DESIGNATED_PORT,
459 QEMU_IFLA_BRPORT_DESIGNATED_COST,
460 QEMU_IFLA_BRPORT_ID,
461 QEMU_IFLA_BRPORT_NO,
462 QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
463 QEMU_IFLA_BRPORT_CONFIG_PENDING,
464 QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER,
465 QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER,
466 QEMU_IFLA_BRPORT_HOLD_TIMER,
467 QEMU_IFLA_BRPORT_FLUSH,
468 QEMU_IFLA_BRPORT_MULTICAST_ROUTER,
469 QEMU_IFLA_BRPORT_PAD,
470 QEMU___IFLA_BRPORT_MAX
471 };
472
473 enum {
474 QEMU_IFLA_INFO_UNSPEC,
475 QEMU_IFLA_INFO_KIND,
476 QEMU_IFLA_INFO_DATA,
477 QEMU_IFLA_INFO_XSTATS,
478 QEMU_IFLA_INFO_SLAVE_KIND,
479 QEMU_IFLA_INFO_SLAVE_DATA,
480 QEMU___IFLA_INFO_MAX,
481 };
482
483 enum {
484 QEMU_IFLA_INET_UNSPEC,
485 QEMU_IFLA_INET_CONF,
486 QEMU___IFLA_INET_MAX,
487 };
488
489 enum {
490 QEMU_IFLA_INET6_UNSPEC,
491 QEMU_IFLA_INET6_FLAGS,
492 QEMU_IFLA_INET6_CONF,
493 QEMU_IFLA_INET6_STATS,
494 QEMU_IFLA_INET6_MCAST,
495 QEMU_IFLA_INET6_CACHEINFO,
496 QEMU_IFLA_INET6_ICMP6STATS,
497 QEMU_IFLA_INET6_TOKEN,
498 QEMU_IFLA_INET6_ADDR_GEN_MODE,
499 QEMU___IFLA_INET6_MAX
500 };
501
502 typedef abi_long (*TargetFdDataFunc)(void *, size_t);
503 typedef abi_long (*TargetFdAddrFunc)(void *, abi_ulong, socklen_t);
504 typedef struct TargetFdTrans {
505 TargetFdDataFunc host_to_target_data;
506 TargetFdDataFunc target_to_host_data;
507 TargetFdAddrFunc target_to_host_addr;
508 } TargetFdTrans;
509
510 static TargetFdTrans **target_fd_trans;
511
512 static unsigned int target_fd_max;
513
514 static TargetFdDataFunc fd_trans_target_to_host_data(int fd)
515 {
516 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
517 return target_fd_trans[fd]->target_to_host_data;
518 }
519 return NULL;
520 }
521
522 static TargetFdDataFunc fd_trans_host_to_target_data(int fd)
523 {
524 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
525 return target_fd_trans[fd]->host_to_target_data;
526 }
527 return NULL;
528 }
529
530 static TargetFdAddrFunc fd_trans_target_to_host_addr(int fd)
531 {
532 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
533 return target_fd_trans[fd]->target_to_host_addr;
534 }
535 return NULL;
536 }
537
538 static void fd_trans_register(int fd, TargetFdTrans *trans)
539 {
540 unsigned int oldmax;
541
542 if (fd >= target_fd_max) {
543 oldmax = target_fd_max;
544 target_fd_max = ((fd >> 6) + 1) << 6; /* by slice of 64 entries */
545 target_fd_trans = g_renew(TargetFdTrans *,
546 target_fd_trans, target_fd_max);
547 memset((void *)(target_fd_trans + oldmax), 0,
548 (target_fd_max - oldmax) * sizeof(TargetFdTrans *));
549 }
550 target_fd_trans[fd] = trans;
551 }
552
553 static void fd_trans_unregister(int fd)
554 {
555 if (fd >= 0 && fd < target_fd_max) {
556 target_fd_trans[fd] = NULL;
557 }
558 }
559
560 static void fd_trans_dup(int oldfd, int newfd)
561 {
562 fd_trans_unregister(newfd);
563 if (oldfd < target_fd_max && target_fd_trans[oldfd]) {
564 fd_trans_register(newfd, target_fd_trans[oldfd]);
565 }
566 }
567
568 static int sys_getcwd1(char *buf, size_t size)
569 {
570 if (getcwd(buf, size) == NULL) {
571 /* getcwd() sets errno */
572 return (-1);
573 }
574 return strlen(buf)+1;
575 }
576
577 #ifdef TARGET_NR_utimensat
578 #if defined(__NR_utimensat)
579 #define __NR_sys_utimensat __NR_utimensat
580 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
581 const struct timespec *,tsp,int,flags)
582 #else
583 static int sys_utimensat(int dirfd, const char *pathname,
584 const struct timespec times[2], int flags)
585 {
586 errno = ENOSYS;
587 return -1;
588 }
589 #endif
590 #endif /* TARGET_NR_utimensat */
591
592 #ifdef CONFIG_INOTIFY
593 #include <sys/inotify.h>
594
595 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
596 static int sys_inotify_init(void)
597 {
598 return (inotify_init());
599 }
600 #endif
601 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
602 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
603 {
604 return (inotify_add_watch(fd, pathname, mask));
605 }
606 #endif
607 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
608 static int sys_inotify_rm_watch(int fd, int32_t wd)
609 {
610 return (inotify_rm_watch(fd, wd));
611 }
612 #endif
613 #ifdef CONFIG_INOTIFY1
614 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
615 static int sys_inotify_init1(int flags)
616 {
617 return (inotify_init1(flags));
618 }
619 #endif
620 #endif
621 #else
622 /* Userspace can usually survive runtime without inotify */
623 #undef TARGET_NR_inotify_init
624 #undef TARGET_NR_inotify_init1
625 #undef TARGET_NR_inotify_add_watch
626 #undef TARGET_NR_inotify_rm_watch
627 #endif /* CONFIG_INOTIFY */
628
629 #if defined(TARGET_NR_prlimit64)
630 #ifndef __NR_prlimit64
631 # define __NR_prlimit64 -1
632 #endif
633 #define __NR_sys_prlimit64 __NR_prlimit64
634 /* The glibc rlimit structure may not be that used by the underlying syscall */
635 struct host_rlimit64 {
636 uint64_t rlim_cur;
637 uint64_t rlim_max;
638 };
639 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
640 const struct host_rlimit64 *, new_limit,
641 struct host_rlimit64 *, old_limit)
642 #endif
643
644
645 #if defined(TARGET_NR_timer_create)
646 /* Maxiumum of 32 active POSIX timers allowed at any one time. */
647 static timer_t g_posix_timers[32] = { 0, } ;
648
649 static inline int next_free_host_timer(void)
650 {
651 int k ;
652 /* FIXME: Does finding the next free slot require a lock? */
653 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
654 if (g_posix_timers[k] == 0) {
655 g_posix_timers[k] = (timer_t) 1;
656 return k;
657 }
658 }
659 return -1;
660 }
661 #endif
662
663 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
664 #ifdef TARGET_ARM
665 static inline int regpairs_aligned(void *cpu_env) {
666 return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
667 }
668 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
669 static inline int regpairs_aligned(void *cpu_env) { return 1; }
670 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
671 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
672 * of registers which translates to the same as ARM/MIPS, because we start with
673 * r3 as arg1 */
674 static inline int regpairs_aligned(void *cpu_env) { return 1; }
675 #else
676 static inline int regpairs_aligned(void *cpu_env) { return 0; }
677 #endif
678
679 #define ERRNO_TABLE_SIZE 1200
680
681 /* target_to_host_errno_table[] is initialized from
682 * host_to_target_errno_table[] in syscall_init(). */
683 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
684 };
685
686 /*
687 * This list is the union of errno values overridden in asm-<arch>/errno.h
688 * minus the errnos that are not actually generic to all archs.
689 */
690 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
691 [EAGAIN] = TARGET_EAGAIN,
692 [EIDRM] = TARGET_EIDRM,
693 [ECHRNG] = TARGET_ECHRNG,
694 [EL2NSYNC] = TARGET_EL2NSYNC,
695 [EL3HLT] = TARGET_EL3HLT,
696 [EL3RST] = TARGET_EL3RST,
697 [ELNRNG] = TARGET_ELNRNG,
698 [EUNATCH] = TARGET_EUNATCH,
699 [ENOCSI] = TARGET_ENOCSI,
700 [EL2HLT] = TARGET_EL2HLT,
701 [EDEADLK] = TARGET_EDEADLK,
702 [ENOLCK] = TARGET_ENOLCK,
703 [EBADE] = TARGET_EBADE,
704 [EBADR] = TARGET_EBADR,
705 [EXFULL] = TARGET_EXFULL,
706 [ENOANO] = TARGET_ENOANO,
707 [EBADRQC] = TARGET_EBADRQC,
708 [EBADSLT] = TARGET_EBADSLT,
709 [EBFONT] = TARGET_EBFONT,
710 [ENOSTR] = TARGET_ENOSTR,
711 [ENODATA] = TARGET_ENODATA,
712 [ETIME] = TARGET_ETIME,
713 [ENOSR] = TARGET_ENOSR,
714 [ENONET] = TARGET_ENONET,
715 [ENOPKG] = TARGET_ENOPKG,
716 [EREMOTE] = TARGET_EREMOTE,
717 [ENOLINK] = TARGET_ENOLINK,
718 [EADV] = TARGET_EADV,
719 [ESRMNT] = TARGET_ESRMNT,
720 [ECOMM] = TARGET_ECOMM,
721 [EPROTO] = TARGET_EPROTO,
722 [EDOTDOT] = TARGET_EDOTDOT,
723 [EMULTIHOP] = TARGET_EMULTIHOP,
724 [EBADMSG] = TARGET_EBADMSG,
725 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
726 [EOVERFLOW] = TARGET_EOVERFLOW,
727 [ENOTUNIQ] = TARGET_ENOTUNIQ,
728 [EBADFD] = TARGET_EBADFD,
729 [EREMCHG] = TARGET_EREMCHG,
730 [ELIBACC] = TARGET_ELIBACC,
731 [ELIBBAD] = TARGET_ELIBBAD,
732 [ELIBSCN] = TARGET_ELIBSCN,
733 [ELIBMAX] = TARGET_ELIBMAX,
734 [ELIBEXEC] = TARGET_ELIBEXEC,
735 [EILSEQ] = TARGET_EILSEQ,
736 [ENOSYS] = TARGET_ENOSYS,
737 [ELOOP] = TARGET_ELOOP,
738 [ERESTART] = TARGET_ERESTART,
739 [ESTRPIPE] = TARGET_ESTRPIPE,
740 [ENOTEMPTY] = TARGET_ENOTEMPTY,
741 [EUSERS] = TARGET_EUSERS,
742 [ENOTSOCK] = TARGET_ENOTSOCK,
743 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
744 [EMSGSIZE] = TARGET_EMSGSIZE,
745 [EPROTOTYPE] = TARGET_EPROTOTYPE,
746 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
747 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
748 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
749 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
750 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
751 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
752 [EADDRINUSE] = TARGET_EADDRINUSE,
753 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
754 [ENETDOWN] = TARGET_ENETDOWN,
755 [ENETUNREACH] = TARGET_ENETUNREACH,
756 [ENETRESET] = TARGET_ENETRESET,
757 [ECONNABORTED] = TARGET_ECONNABORTED,
758 [ECONNRESET] = TARGET_ECONNRESET,
759 [ENOBUFS] = TARGET_ENOBUFS,
760 [EISCONN] = TARGET_EISCONN,
761 [ENOTCONN] = TARGET_ENOTCONN,
762 [EUCLEAN] = TARGET_EUCLEAN,
763 [ENOTNAM] = TARGET_ENOTNAM,
764 [ENAVAIL] = TARGET_ENAVAIL,
765 [EISNAM] = TARGET_EISNAM,
766 [EREMOTEIO] = TARGET_EREMOTEIO,
767 [EDQUOT] = TARGET_EDQUOT,
768 [ESHUTDOWN] = TARGET_ESHUTDOWN,
769 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
770 [ETIMEDOUT] = TARGET_ETIMEDOUT,
771 [ECONNREFUSED] = TARGET_ECONNREFUSED,
772 [EHOSTDOWN] = TARGET_EHOSTDOWN,
773 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
774 [EALREADY] = TARGET_EALREADY,
775 [EINPROGRESS] = TARGET_EINPROGRESS,
776 [ESTALE] = TARGET_ESTALE,
777 [ECANCELED] = TARGET_ECANCELED,
778 [ENOMEDIUM] = TARGET_ENOMEDIUM,
779 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
780 #ifdef ENOKEY
781 [ENOKEY] = TARGET_ENOKEY,
782 #endif
783 #ifdef EKEYEXPIRED
784 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
785 #endif
786 #ifdef EKEYREVOKED
787 [EKEYREVOKED] = TARGET_EKEYREVOKED,
788 #endif
789 #ifdef EKEYREJECTED
790 [EKEYREJECTED] = TARGET_EKEYREJECTED,
791 #endif
792 #ifdef EOWNERDEAD
793 [EOWNERDEAD] = TARGET_EOWNERDEAD,
794 #endif
795 #ifdef ENOTRECOVERABLE
796 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
797 #endif
798 #ifdef ENOMSG
799 [ENOMSG] = TARGET_ENOMSG,
800 #endif
801 };
802
803 static inline int host_to_target_errno(int err)
804 {
805 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
806 host_to_target_errno_table[err]) {
807 return host_to_target_errno_table[err];
808 }
809 return err;
810 }
811
812 static inline int target_to_host_errno(int err)
813 {
814 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
815 target_to_host_errno_table[err]) {
816 return target_to_host_errno_table[err];
817 }
818 return err;
819 }
820
821 static inline abi_long get_errno(abi_long ret)
822 {
823 if (ret == -1)
824 return -host_to_target_errno(errno);
825 else
826 return ret;
827 }
828
829 static inline int is_error(abi_long ret)
830 {
831 return (abi_ulong)ret >= (abi_ulong)(-4096);
832 }
833
834 const char *target_strerror(int err)
835 {
836 if (err == TARGET_ERESTARTSYS) {
837 return "To be restarted";
838 }
839 if (err == TARGET_QEMU_ESIGRETURN) {
840 return "Successful exit from sigreturn";
841 }
842
843 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
844 return NULL;
845 }
846 return strerror(target_to_host_errno(err));
847 }
848
849 #define safe_syscall0(type, name) \
850 static type safe_##name(void) \
851 { \
852 return safe_syscall(__NR_##name); \
853 }
854
855 #define safe_syscall1(type, name, type1, arg1) \
856 static type safe_##name(type1 arg1) \
857 { \
858 return safe_syscall(__NR_##name, arg1); \
859 }
860
861 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
862 static type safe_##name(type1 arg1, type2 arg2) \
863 { \
864 return safe_syscall(__NR_##name, arg1, arg2); \
865 }
866
867 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
868 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
869 { \
870 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
871 }
872
873 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
874 type4, arg4) \
875 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
876 { \
877 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
878 }
879
880 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
881 type4, arg4, type5, arg5) \
882 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
883 type5 arg5) \
884 { \
885 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
886 }
887
888 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
889 type4, arg4, type5, arg5, type6, arg6) \
890 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
891 type5 arg5, type6 arg6) \
892 { \
893 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
894 }
895
896 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
897 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
898 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
899 int, flags, mode_t, mode)
900 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
901 struct rusage *, rusage)
902 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
903 int, options, struct rusage *, rusage)
904 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
905 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
906 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
907 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
908 struct timespec *, tsp, const sigset_t *, sigmask,
909 size_t, sigsetsize)
910 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
911 int, maxevents, int, timeout, const sigset_t *, sigmask,
912 size_t, sigsetsize)
913 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
914 const struct timespec *,timeout,int *,uaddr2,int,val3)
915 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
916 safe_syscall2(int, kill, pid_t, pid, int, sig)
917 safe_syscall2(int, tkill, int, tid, int, sig)
918 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
919 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
920 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
921 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
922 unsigned long, pos_l, unsigned long, pos_h)
923 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
924 unsigned long, pos_l, unsigned long, pos_h)
925 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
926 socklen_t, addrlen)
927 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
928 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
929 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
930 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
931 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
932 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
933 safe_syscall2(int, flock, int, fd, int, operation)
934 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
935 const struct timespec *, uts, size_t, sigsetsize)
936 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
937 int, flags)
938 safe_syscall2(int, nanosleep, const struct timespec *, req,
939 struct timespec *, rem)
940 #ifdef TARGET_NR_clock_nanosleep
941 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
942 const struct timespec *, req, struct timespec *, rem)
943 #endif
944 #ifdef __NR_msgsnd
945 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
946 int, flags)
947 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
948 long, msgtype, int, flags)
949 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
950 unsigned, nsops, const struct timespec *, timeout)
951 #else
952 /* This host kernel architecture uses a single ipc syscall; fake up
953 * wrappers for the sub-operations to hide this implementation detail.
954 * Annoyingly we can't include linux/ipc.h to get the constant definitions
955 * for the call parameter because some structs in there conflict with the
956 * sys/ipc.h ones. So we just define them here, and rely on them being
957 * the same for all host architectures.
958 */
959 #define Q_SEMTIMEDOP 4
960 #define Q_MSGSND 11
961 #define Q_MSGRCV 12
962 #define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP))
963
964 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
965 void *, ptr, long, fifth)
966 static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags)
967 {
968 return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0);
969 }
970 static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags)
971 {
972 return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type);
973 }
974 static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops,
975 const struct timespec *timeout)
976 {
977 return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops,
978 (long)timeout);
979 }
980 #endif
981 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
982 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
983 size_t, len, unsigned, prio, const struct timespec *, timeout)
984 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
985 size_t, len, unsigned *, prio, const struct timespec *, timeout)
986 #endif
987 /* We do ioctl like this rather than via safe_syscall3 to preserve the
988 * "third argument might be integer or pointer or not present" behaviour of
989 * the libc function.
990 */
991 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
992 /* Similarly for fcntl. Note that callers must always:
993 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
994 * use the flock64 struct rather than unsuffixed flock
995 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
996 */
997 #ifdef __NR_fcntl64
998 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
999 #else
1000 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
1001 #endif
1002
1003 static inline int host_to_target_sock_type(int host_type)
1004 {
1005 int target_type;
1006
1007 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
1008 case SOCK_DGRAM:
1009 target_type = TARGET_SOCK_DGRAM;
1010 break;
1011 case SOCK_STREAM:
1012 target_type = TARGET_SOCK_STREAM;
1013 break;
1014 default:
1015 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
1016 break;
1017 }
1018
1019 #if defined(SOCK_CLOEXEC)
1020 if (host_type & SOCK_CLOEXEC) {
1021 target_type |= TARGET_SOCK_CLOEXEC;
1022 }
1023 #endif
1024
1025 #if defined(SOCK_NONBLOCK)
1026 if (host_type & SOCK_NONBLOCK) {
1027 target_type |= TARGET_SOCK_NONBLOCK;
1028 }
1029 #endif
1030
1031 return target_type;
1032 }
1033
1034 static abi_ulong target_brk;
1035 static abi_ulong target_original_brk;
1036 static abi_ulong brk_page;
1037
1038 void target_set_brk(abi_ulong new_brk)
1039 {
1040 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
1041 brk_page = HOST_PAGE_ALIGN(target_brk);
1042 }
1043
1044 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
1045 #define DEBUGF_BRK(message, args...)
1046
1047 /* do_brk() must return target values and target errnos. */
1048 abi_long do_brk(abi_ulong new_brk)
1049 {
1050 abi_long mapped_addr;
1051 abi_ulong new_alloc_size;
1052
1053 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
1054
1055 if (!new_brk) {
1056 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
1057 return target_brk;
1058 }
1059 if (new_brk < target_original_brk) {
1060 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
1061 target_brk);
1062 return target_brk;
1063 }
1064
1065 /* If the new brk is less than the highest page reserved to the
1066 * target heap allocation, set it and we're almost done... */
1067 if (new_brk <= brk_page) {
1068 /* Heap contents are initialized to zero, as for anonymous
1069 * mapped pages. */
1070 if (new_brk > target_brk) {
1071 memset(g2h(target_brk), 0, new_brk - target_brk);
1072 }
1073 target_brk = new_brk;
1074 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
1075 return target_brk;
1076 }
1077
1078 /* We need to allocate more memory after the brk... Note that
1079 * we don't use MAP_FIXED because that will map over the top of
1080 * any existing mapping (like the one with the host libc or qemu
1081 * itself); instead we treat "mapped but at wrong address" as
1082 * a failure and unmap again.
1083 */
1084 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
1085 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
1086 PROT_READ|PROT_WRITE,
1087 MAP_ANON|MAP_PRIVATE, 0, 0));
1088
1089 if (mapped_addr == brk_page) {
1090 /* Heap contents are initialized to zero, as for anonymous
1091 * mapped pages. Technically the new pages are already
1092 * initialized to zero since they *are* anonymous mapped
1093 * pages, however we have to take care with the contents that
1094 * come from the remaining part of the previous page: it may
1095 * contains garbage data due to a previous heap usage (grown
1096 * then shrunken). */
1097 memset(g2h(target_brk), 0, brk_page - target_brk);
1098
1099 target_brk = new_brk;
1100 brk_page = HOST_PAGE_ALIGN(target_brk);
1101 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
1102 target_brk);
1103 return target_brk;
1104 } else if (mapped_addr != -1) {
1105 /* Mapped but at wrong address, meaning there wasn't actually
1106 * enough space for this brk.
1107 */
1108 target_munmap(mapped_addr, new_alloc_size);
1109 mapped_addr = -1;
1110 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
1111 }
1112 else {
1113 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
1114 }
1115
1116 #if defined(TARGET_ALPHA)
1117 /* We (partially) emulate OSF/1 on Alpha, which requires we
1118 return a proper errno, not an unchanged brk value. */
1119 return -TARGET_ENOMEM;
1120 #endif
1121 /* For everything else, return the previous break. */
1122 return target_brk;
1123 }
1124
1125 static inline abi_long copy_from_user_fdset(fd_set *fds,
1126 abi_ulong target_fds_addr,
1127 int n)
1128 {
1129 int i, nw, j, k;
1130 abi_ulong b, *target_fds;
1131
1132 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1133 if (!(target_fds = lock_user(VERIFY_READ,
1134 target_fds_addr,
1135 sizeof(abi_ulong) * nw,
1136 1)))
1137 return -TARGET_EFAULT;
1138
1139 FD_ZERO(fds);
1140 k = 0;
1141 for (i = 0; i < nw; i++) {
1142 /* grab the abi_ulong */
1143 __get_user(b, &target_fds[i]);
1144 for (j = 0; j < TARGET_ABI_BITS; j++) {
1145 /* check the bit inside the abi_ulong */
1146 if ((b >> j) & 1)
1147 FD_SET(k, fds);
1148 k++;
1149 }
1150 }
1151
1152 unlock_user(target_fds, target_fds_addr, 0);
1153
1154 return 0;
1155 }
1156
1157 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
1158 abi_ulong target_fds_addr,
1159 int n)
1160 {
1161 if (target_fds_addr) {
1162 if (copy_from_user_fdset(fds, target_fds_addr, n))
1163 return -TARGET_EFAULT;
1164 *fds_ptr = fds;
1165 } else {
1166 *fds_ptr = NULL;
1167 }
1168 return 0;
1169 }
1170
1171 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
1172 const fd_set *fds,
1173 int n)
1174 {
1175 int i, nw, j, k;
1176 abi_long v;
1177 abi_ulong *target_fds;
1178
1179 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1180 if (!(target_fds = lock_user(VERIFY_WRITE,
1181 target_fds_addr,
1182 sizeof(abi_ulong) * nw,
1183 0)))
1184 return -TARGET_EFAULT;
1185
1186 k = 0;
1187 for (i = 0; i < nw; i++) {
1188 v = 0;
1189 for (j = 0; j < TARGET_ABI_BITS; j++) {
1190 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1191 k++;
1192 }
1193 __put_user(v, &target_fds[i]);
1194 }
1195
1196 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1197
1198 return 0;
1199 }
1200
1201 #if defined(__alpha__)
1202 #define HOST_HZ 1024
1203 #else
1204 #define HOST_HZ 100
1205 #endif
1206
1207 static inline abi_long host_to_target_clock_t(long ticks)
1208 {
1209 #if HOST_HZ == TARGET_HZ
1210 return ticks;
1211 #else
1212 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1213 #endif
1214 }
1215
1216 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1217 const struct rusage *rusage)
1218 {
1219 struct target_rusage *target_rusage;
1220
1221 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1222 return -TARGET_EFAULT;
1223 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1224 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1225 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1226 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1227 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1228 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1229 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1230 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1231 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1232 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1233 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1234 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1235 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1236 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1237 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1238 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1239 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1240 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1241 unlock_user_struct(target_rusage, target_addr, 1);
1242
1243 return 0;
1244 }
1245
1246 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1247 {
1248 abi_ulong target_rlim_swap;
1249 rlim_t result;
1250
1251 target_rlim_swap = tswapal(target_rlim);
1252 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1253 return RLIM_INFINITY;
1254
1255 result = target_rlim_swap;
1256 if (target_rlim_swap != (rlim_t)result)
1257 return RLIM_INFINITY;
1258
1259 return result;
1260 }
1261
1262 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1263 {
1264 abi_ulong target_rlim_swap;
1265 abi_ulong result;
1266
1267 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1268 target_rlim_swap = TARGET_RLIM_INFINITY;
1269 else
1270 target_rlim_swap = rlim;
1271 result = tswapal(target_rlim_swap);
1272
1273 return result;
1274 }
1275
1276 static inline int target_to_host_resource(int code)
1277 {
1278 switch (code) {
1279 case TARGET_RLIMIT_AS:
1280 return RLIMIT_AS;
1281 case TARGET_RLIMIT_CORE:
1282 return RLIMIT_CORE;
1283 case TARGET_RLIMIT_CPU:
1284 return RLIMIT_CPU;
1285 case TARGET_RLIMIT_DATA:
1286 return RLIMIT_DATA;
1287 case TARGET_RLIMIT_FSIZE:
1288 return RLIMIT_FSIZE;
1289 case TARGET_RLIMIT_LOCKS:
1290 return RLIMIT_LOCKS;
1291 case TARGET_RLIMIT_MEMLOCK:
1292 return RLIMIT_MEMLOCK;
1293 case TARGET_RLIMIT_MSGQUEUE:
1294 return RLIMIT_MSGQUEUE;
1295 case TARGET_RLIMIT_NICE:
1296 return RLIMIT_NICE;
1297 case TARGET_RLIMIT_NOFILE:
1298 return RLIMIT_NOFILE;
1299 case TARGET_RLIMIT_NPROC:
1300 return RLIMIT_NPROC;
1301 case TARGET_RLIMIT_RSS:
1302 return RLIMIT_RSS;
1303 case TARGET_RLIMIT_RTPRIO:
1304 return RLIMIT_RTPRIO;
1305 case TARGET_RLIMIT_SIGPENDING:
1306 return RLIMIT_SIGPENDING;
1307 case TARGET_RLIMIT_STACK:
1308 return RLIMIT_STACK;
1309 default:
1310 return code;
1311 }
1312 }
1313
1314 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1315 abi_ulong target_tv_addr)
1316 {
1317 struct target_timeval *target_tv;
1318
1319 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1))
1320 return -TARGET_EFAULT;
1321
1322 __get_user(tv->tv_sec, &target_tv->tv_sec);
1323 __get_user(tv->tv_usec, &target_tv->tv_usec);
1324
1325 unlock_user_struct(target_tv, target_tv_addr, 0);
1326
1327 return 0;
1328 }
1329
1330 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1331 const struct timeval *tv)
1332 {
1333 struct target_timeval *target_tv;
1334
1335 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0))
1336 return -TARGET_EFAULT;
1337
1338 __put_user(tv->tv_sec, &target_tv->tv_sec);
1339 __put_user(tv->tv_usec, &target_tv->tv_usec);
1340
1341 unlock_user_struct(target_tv, target_tv_addr, 1);
1342
1343 return 0;
1344 }
1345
1346 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1347 abi_ulong target_tz_addr)
1348 {
1349 struct target_timezone *target_tz;
1350
1351 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1352 return -TARGET_EFAULT;
1353 }
1354
1355 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1356 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1357
1358 unlock_user_struct(target_tz, target_tz_addr, 0);
1359
1360 return 0;
1361 }
1362
1363 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1364 #include <mqueue.h>
1365
1366 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1367 abi_ulong target_mq_attr_addr)
1368 {
1369 struct target_mq_attr *target_mq_attr;
1370
1371 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1372 target_mq_attr_addr, 1))
1373 return -TARGET_EFAULT;
1374
1375 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1376 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1377 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1378 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1379
1380 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1381
1382 return 0;
1383 }
1384
1385 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1386 const struct mq_attr *attr)
1387 {
1388 struct target_mq_attr *target_mq_attr;
1389
1390 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1391 target_mq_attr_addr, 0))
1392 return -TARGET_EFAULT;
1393
1394 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1395 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1396 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1397 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1398
1399 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1400
1401 return 0;
1402 }
1403 #endif
1404
1405 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1406 /* do_select() must return target values and target errnos. */
1407 static abi_long do_select(int n,
1408 abi_ulong rfd_addr, abi_ulong wfd_addr,
1409 abi_ulong efd_addr, abi_ulong target_tv_addr)
1410 {
1411 fd_set rfds, wfds, efds;
1412 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1413 struct timeval tv;
1414 struct timespec ts, *ts_ptr;
1415 abi_long ret;
1416
1417 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1418 if (ret) {
1419 return ret;
1420 }
1421 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1422 if (ret) {
1423 return ret;
1424 }
1425 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1426 if (ret) {
1427 return ret;
1428 }
1429
1430 if (target_tv_addr) {
1431 if (copy_from_user_timeval(&tv, target_tv_addr))
1432 return -TARGET_EFAULT;
1433 ts.tv_sec = tv.tv_sec;
1434 ts.tv_nsec = tv.tv_usec * 1000;
1435 ts_ptr = &ts;
1436 } else {
1437 ts_ptr = NULL;
1438 }
1439
1440 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1441 ts_ptr, NULL));
1442
1443 if (!is_error(ret)) {
1444 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1445 return -TARGET_EFAULT;
1446 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1447 return -TARGET_EFAULT;
1448 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1449 return -TARGET_EFAULT;
1450
1451 if (target_tv_addr) {
1452 tv.tv_sec = ts.tv_sec;
1453 tv.tv_usec = ts.tv_nsec / 1000;
1454 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1455 return -TARGET_EFAULT;
1456 }
1457 }
1458 }
1459
1460 return ret;
1461 }
1462
1463 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1464 static abi_long do_old_select(abi_ulong arg1)
1465 {
1466 struct target_sel_arg_struct *sel;
1467 abi_ulong inp, outp, exp, tvp;
1468 long nsel;
1469
1470 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1471 return -TARGET_EFAULT;
1472 }
1473
1474 nsel = tswapal(sel->n);
1475 inp = tswapal(sel->inp);
1476 outp = tswapal(sel->outp);
1477 exp = tswapal(sel->exp);
1478 tvp = tswapal(sel->tvp);
1479
1480 unlock_user_struct(sel, arg1, 0);
1481
1482 return do_select(nsel, inp, outp, exp, tvp);
1483 }
1484 #endif
1485 #endif
1486
1487 static abi_long do_pipe2(int host_pipe[], int flags)
1488 {
1489 #ifdef CONFIG_PIPE2
1490 return pipe2(host_pipe, flags);
1491 #else
1492 return -ENOSYS;
1493 #endif
1494 }
1495
1496 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1497 int flags, int is_pipe2)
1498 {
1499 int host_pipe[2];
1500 abi_long ret;
1501 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1502
1503 if (is_error(ret))
1504 return get_errno(ret);
1505
1506 /* Several targets have special calling conventions for the original
1507 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1508 if (!is_pipe2) {
1509 #if defined(TARGET_ALPHA)
1510 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1511 return host_pipe[0];
1512 #elif defined(TARGET_MIPS)
1513 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1514 return host_pipe[0];
1515 #elif defined(TARGET_SH4)
1516 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1517 return host_pipe[0];
1518 #elif defined(TARGET_SPARC)
1519 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1520 return host_pipe[0];
1521 #endif
1522 }
1523
1524 if (put_user_s32(host_pipe[0], pipedes)
1525 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1526 return -TARGET_EFAULT;
1527 return get_errno(ret);
1528 }
1529
1530 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1531 abi_ulong target_addr,
1532 socklen_t len)
1533 {
1534 struct target_ip_mreqn *target_smreqn;
1535
1536 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1537 if (!target_smreqn)
1538 return -TARGET_EFAULT;
1539 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1540 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1541 if (len == sizeof(struct target_ip_mreqn))
1542 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1543 unlock_user(target_smreqn, target_addr, 0);
1544
1545 return 0;
1546 }
1547
1548 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1549 abi_ulong target_addr,
1550 socklen_t len)
1551 {
1552 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1553 sa_family_t sa_family;
1554 struct target_sockaddr *target_saddr;
1555
1556 if (fd_trans_target_to_host_addr(fd)) {
1557 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1558 }
1559
1560 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1561 if (!target_saddr)
1562 return -TARGET_EFAULT;
1563
1564 sa_family = tswap16(target_saddr->sa_family);
1565
1566 /* Oops. The caller might send a incomplete sun_path; sun_path
1567 * must be terminated by \0 (see the manual page), but
1568 * unfortunately it is quite common to specify sockaddr_un
1569 * length as "strlen(x->sun_path)" while it should be
1570 * "strlen(...) + 1". We'll fix that here if needed.
1571 * Linux kernel has a similar feature.
1572 */
1573
1574 if (sa_family == AF_UNIX) {
1575 if (len < unix_maxlen && len > 0) {
1576 char *cp = (char*)target_saddr;
1577
1578 if ( cp[len-1] && !cp[len] )
1579 len++;
1580 }
1581 if (len > unix_maxlen)
1582 len = unix_maxlen;
1583 }
1584
1585 memcpy(addr, target_saddr, len);
1586 addr->sa_family = sa_family;
1587 if (sa_family == AF_NETLINK) {
1588 struct sockaddr_nl *nladdr;
1589
1590 nladdr = (struct sockaddr_nl *)addr;
1591 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1592 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1593 } else if (sa_family == AF_PACKET) {
1594 struct target_sockaddr_ll *lladdr;
1595
1596 lladdr = (struct target_sockaddr_ll *)addr;
1597 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1598 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1599 }
1600 unlock_user(target_saddr, target_addr, 0);
1601
1602 return 0;
1603 }
1604
1605 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1606 struct sockaddr *addr,
1607 socklen_t len)
1608 {
1609 struct target_sockaddr *target_saddr;
1610
1611 if (len == 0) {
1612 return 0;
1613 }
1614
1615 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1616 if (!target_saddr)
1617 return -TARGET_EFAULT;
1618 memcpy(target_saddr, addr, len);
1619 if (len >= offsetof(struct target_sockaddr, sa_family) +
1620 sizeof(target_saddr->sa_family)) {
1621 target_saddr->sa_family = tswap16(addr->sa_family);
1622 }
1623 if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) {
1624 struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr;
1625 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1626 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1627 } else if (addr->sa_family == AF_PACKET) {
1628 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1629 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1630 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1631 }
1632 unlock_user(target_saddr, target_addr, len);
1633
1634 return 0;
1635 }
1636
1637 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1638 struct target_msghdr *target_msgh)
1639 {
1640 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1641 abi_long msg_controllen;
1642 abi_ulong target_cmsg_addr;
1643 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1644 socklen_t space = 0;
1645
1646 msg_controllen = tswapal(target_msgh->msg_controllen);
1647 if (msg_controllen < sizeof (struct target_cmsghdr))
1648 goto the_end;
1649 target_cmsg_addr = tswapal(target_msgh->msg_control);
1650 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1651 target_cmsg_start = target_cmsg;
1652 if (!target_cmsg)
1653 return -TARGET_EFAULT;
1654
1655 while (cmsg && target_cmsg) {
1656 void *data = CMSG_DATA(cmsg);
1657 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1658
1659 int len = tswapal(target_cmsg->cmsg_len)
1660 - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
1661
1662 space += CMSG_SPACE(len);
1663 if (space > msgh->msg_controllen) {
1664 space -= CMSG_SPACE(len);
1665 /* This is a QEMU bug, since we allocated the payload
1666 * area ourselves (unlike overflow in host-to-target
1667 * conversion, which is just the guest giving us a buffer
1668 * that's too small). It can't happen for the payload types
1669 * we currently support; if it becomes an issue in future
1670 * we would need to improve our allocation strategy to
1671 * something more intelligent than "twice the size of the
1672 * target buffer we're reading from".
1673 */
1674 gemu_log("Host cmsg overflow\n");
1675 break;
1676 }
1677
1678 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1679 cmsg->cmsg_level = SOL_SOCKET;
1680 } else {
1681 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1682 }
1683 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1684 cmsg->cmsg_len = CMSG_LEN(len);
1685
1686 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1687 int *fd = (int *)data;
1688 int *target_fd = (int *)target_data;
1689 int i, numfds = len / sizeof(int);
1690
1691 for (i = 0; i < numfds; i++) {
1692 __get_user(fd[i], target_fd + i);
1693 }
1694 } else if (cmsg->cmsg_level == SOL_SOCKET
1695 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1696 struct ucred *cred = (struct ucred *)data;
1697 struct target_ucred *target_cred =
1698 (struct target_ucred *)target_data;
1699
1700 __get_user(cred->pid, &target_cred->pid);
1701 __get_user(cred->uid, &target_cred->uid);
1702 __get_user(cred->gid, &target_cred->gid);
1703 } else {
1704 gemu_log("Unsupported ancillary data: %d/%d\n",
1705 cmsg->cmsg_level, cmsg->cmsg_type);
1706 memcpy(data, target_data, len);
1707 }
1708
1709 cmsg = CMSG_NXTHDR(msgh, cmsg);
1710 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1711 target_cmsg_start);
1712 }
1713 unlock_user(target_cmsg, target_cmsg_addr, 0);
1714 the_end:
1715 msgh->msg_controllen = space;
1716 return 0;
1717 }
1718
1719 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1720 struct msghdr *msgh)
1721 {
1722 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1723 abi_long msg_controllen;
1724 abi_ulong target_cmsg_addr;
1725 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1726 socklen_t space = 0;
1727
1728 msg_controllen = tswapal(target_msgh->msg_controllen);
1729 if (msg_controllen < sizeof (struct target_cmsghdr))
1730 goto the_end;
1731 target_cmsg_addr = tswapal(target_msgh->msg_control);
1732 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1733 target_cmsg_start = target_cmsg;
1734 if (!target_cmsg)
1735 return -TARGET_EFAULT;
1736
1737 while (cmsg && target_cmsg) {
1738 void *data = CMSG_DATA(cmsg);
1739 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1740
1741 int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
1742 int tgt_len, tgt_space;
1743
1744 /* We never copy a half-header but may copy half-data;
1745 * this is Linux's behaviour in put_cmsg(). Note that
1746 * truncation here is a guest problem (which we report
1747 * to the guest via the CTRUNC bit), unlike truncation
1748 * in target_to_host_cmsg, which is a QEMU bug.
1749 */
1750 if (msg_controllen < sizeof(struct cmsghdr)) {
1751 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1752 break;
1753 }
1754
1755 if (cmsg->cmsg_level == SOL_SOCKET) {
1756 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1757 } else {
1758 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1759 }
1760 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1761
1762 tgt_len = TARGET_CMSG_LEN(len);
1763
1764 /* Payload types which need a different size of payload on
1765 * the target must adjust tgt_len here.
1766 */
1767 switch (cmsg->cmsg_level) {
1768 case SOL_SOCKET:
1769 switch (cmsg->cmsg_type) {
1770 case SO_TIMESTAMP:
1771 tgt_len = sizeof(struct target_timeval);
1772 break;
1773 default:
1774 break;
1775 }
1776 default:
1777 break;
1778 }
1779
1780 if (msg_controllen < tgt_len) {
1781 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1782 tgt_len = msg_controllen;
1783 }
1784
1785 /* We must now copy-and-convert len bytes of payload
1786 * into tgt_len bytes of destination space. Bear in mind
1787 * that in both source and destination we may be dealing
1788 * with a truncated value!
1789 */
1790 switch (cmsg->cmsg_level) {
1791 case SOL_SOCKET:
1792 switch (cmsg->cmsg_type) {
1793 case SCM_RIGHTS:
1794 {
1795 int *fd = (int *)data;
1796 int *target_fd = (int *)target_data;
1797 int i, numfds = tgt_len / sizeof(int);
1798
1799 for (i = 0; i < numfds; i++) {
1800 __put_user(fd[i], target_fd + i);
1801 }
1802 break;
1803 }
1804 case SO_TIMESTAMP:
1805 {
1806 struct timeval *tv = (struct timeval *)data;
1807 struct target_timeval *target_tv =
1808 (struct target_timeval *)target_data;
1809
1810 if (len != sizeof(struct timeval) ||
1811 tgt_len != sizeof(struct target_timeval)) {
1812 goto unimplemented;
1813 }
1814
1815 /* copy struct timeval to target */
1816 __put_user(tv->tv_sec, &target_tv->tv_sec);
1817 __put_user(tv->tv_usec, &target_tv->tv_usec);
1818 break;
1819 }
1820 case SCM_CREDENTIALS:
1821 {
1822 struct ucred *cred = (struct ucred *)data;
1823 struct target_ucred *target_cred =
1824 (struct target_ucred *)target_data;
1825
1826 __put_user(cred->pid, &target_cred->pid);
1827 __put_user(cred->uid, &target_cred->uid);
1828 __put_user(cred->gid, &target_cred->gid);
1829 break;
1830 }
1831 default:
1832 goto unimplemented;
1833 }
1834 break;
1835
1836 default:
1837 unimplemented:
1838 gemu_log("Unsupported ancillary data: %d/%d\n",
1839 cmsg->cmsg_level, cmsg->cmsg_type);
1840 memcpy(target_data, data, MIN(len, tgt_len));
1841 if (tgt_len > len) {
1842 memset(target_data + len, 0, tgt_len - len);
1843 }
1844 }
1845
1846 target_cmsg->cmsg_len = tswapal(tgt_len);
1847 tgt_space = TARGET_CMSG_SPACE(len);
1848 if (msg_controllen < tgt_space) {
1849 tgt_space = msg_controllen;
1850 }
1851 msg_controllen -= tgt_space;
1852 space += tgt_space;
1853 cmsg = CMSG_NXTHDR(msgh, cmsg);
1854 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1855 target_cmsg_start);
1856 }
1857 unlock_user(target_cmsg, target_cmsg_addr, space);
1858 the_end:
1859 target_msgh->msg_controllen = tswapal(space);
1860 return 0;
1861 }
1862
1863 static void tswap_nlmsghdr(struct nlmsghdr *nlh)
1864 {
1865 nlh->nlmsg_len = tswap32(nlh->nlmsg_len);
1866 nlh->nlmsg_type = tswap16(nlh->nlmsg_type);
1867 nlh->nlmsg_flags = tswap16(nlh->nlmsg_flags);
1868 nlh->nlmsg_seq = tswap32(nlh->nlmsg_seq);
1869 nlh->nlmsg_pid = tswap32(nlh->nlmsg_pid);
1870 }
1871
1872 static abi_long host_to_target_for_each_nlmsg(struct nlmsghdr *nlh,
1873 size_t len,
1874 abi_long (*host_to_target_nlmsg)
1875 (struct nlmsghdr *))
1876 {
1877 uint32_t nlmsg_len;
1878 abi_long ret;
1879
1880 while (len > sizeof(struct nlmsghdr)) {
1881
1882 nlmsg_len = nlh->nlmsg_len;
1883 if (nlmsg_len < sizeof(struct nlmsghdr) ||
1884 nlmsg_len > len) {
1885 break;
1886 }
1887
1888 switch (nlh->nlmsg_type) {
1889 case NLMSG_DONE:
1890 tswap_nlmsghdr(nlh);
1891 return 0;
1892 case NLMSG_NOOP:
1893 break;
1894 case NLMSG_ERROR:
1895 {
1896 struct nlmsgerr *e = NLMSG_DATA(nlh);
1897 e->error = tswap32(e->error);
1898 tswap_nlmsghdr(&e->msg);
1899 tswap_nlmsghdr(nlh);
1900 return 0;
1901 }
1902 default:
1903 ret = host_to_target_nlmsg(nlh);
1904 if (ret < 0) {
1905 tswap_nlmsghdr(nlh);
1906 return ret;
1907 }
1908 break;
1909 }
1910 tswap_nlmsghdr(nlh);
1911 len -= NLMSG_ALIGN(nlmsg_len);
1912 nlh = (struct nlmsghdr *)(((char*)nlh) + NLMSG_ALIGN(nlmsg_len));
1913 }
1914 return 0;
1915 }
1916
1917 static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh,
1918 size_t len,
1919 abi_long (*target_to_host_nlmsg)
1920 (struct nlmsghdr *))
1921 {
1922 int ret;
1923
1924 while (len > sizeof(struct nlmsghdr)) {
1925 if (tswap32(nlh->nlmsg_len) < sizeof(struct nlmsghdr) ||
1926 tswap32(nlh->nlmsg_len) > len) {
1927 break;
1928 }
1929 tswap_nlmsghdr(nlh);
1930 switch (nlh->nlmsg_type) {
1931 case NLMSG_DONE:
1932 return 0;
1933 case NLMSG_NOOP:
1934 break;
1935 case NLMSG_ERROR:
1936 {
1937 struct nlmsgerr *e = NLMSG_DATA(nlh);
1938 e->error = tswap32(e->error);
1939 tswap_nlmsghdr(&e->msg);
1940 return 0;
1941 }
1942 default:
1943 ret = target_to_host_nlmsg(nlh);
1944 if (ret < 0) {
1945 return ret;
1946 }
1947 }
1948 len -= NLMSG_ALIGN(nlh->nlmsg_len);
1949 nlh = (struct nlmsghdr *)(((char *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len));
1950 }
1951 return 0;
1952 }
1953
1954 #ifdef CONFIG_RTNETLINK
1955 static abi_long host_to_target_for_each_nlattr(struct nlattr *nlattr,
1956 size_t len, void *context,
1957 abi_long (*host_to_target_nlattr)
1958 (struct nlattr *,
1959 void *context))
1960 {
1961 unsigned short nla_len;
1962 abi_long ret;
1963
1964 while (len > sizeof(struct nlattr)) {
1965 nla_len = nlattr->nla_len;
1966 if (nla_len < sizeof(struct nlattr) ||
1967 nla_len > len) {
1968 break;
1969 }
1970 ret = host_to_target_nlattr(nlattr, context);
1971 nlattr->nla_len = tswap16(nlattr->nla_len);
1972 nlattr->nla_type = tswap16(nlattr->nla_type);
1973 if (ret < 0) {
1974 return ret;
1975 }
1976 len -= NLA_ALIGN(nla_len);
1977 nlattr = (struct nlattr *)(((char *)nlattr) + NLA_ALIGN(nla_len));
1978 }
1979 return 0;
1980 }
1981
1982 static abi_long host_to_target_for_each_rtattr(struct rtattr *rtattr,
1983 size_t len,
1984 abi_long (*host_to_target_rtattr)
1985 (struct rtattr *))
1986 {
1987 unsigned short rta_len;
1988 abi_long ret;
1989
1990 while (len > sizeof(struct rtattr)) {
1991 rta_len = rtattr->rta_len;
1992 if (rta_len < sizeof(struct rtattr) ||
1993 rta_len > len) {
1994 break;
1995 }
1996 ret = host_to_target_rtattr(rtattr);
1997 rtattr->rta_len = tswap16(rtattr->rta_len);
1998 rtattr->rta_type = tswap16(rtattr->rta_type);
1999 if (ret < 0) {
2000 return ret;
2001 }
2002 len -= RTA_ALIGN(rta_len);
2003 rtattr = (struct rtattr *)(((char *)rtattr) + RTA_ALIGN(rta_len));
2004 }
2005 return 0;
2006 }
2007
2008 #define NLA_DATA(nla) ((void *)((char *)(nla)) + NLA_HDRLEN)
2009
2010 static abi_long host_to_target_data_bridge_nlattr(struct nlattr *nlattr,
2011 void *context)
2012 {
2013 uint16_t *u16;
2014 uint32_t *u32;
2015 uint64_t *u64;
2016
2017 switch (nlattr->nla_type) {
2018 /* no data */
2019 case QEMU_IFLA_BR_FDB_FLUSH:
2020 break;
2021 /* binary */
2022 case QEMU_IFLA_BR_GROUP_ADDR:
2023 break;
2024 /* uint8_t */
2025 case QEMU_IFLA_BR_VLAN_FILTERING:
2026 case QEMU_IFLA_BR_TOPOLOGY_CHANGE:
2027 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED:
2028 case QEMU_IFLA_BR_MCAST_ROUTER:
2029 case QEMU_IFLA_BR_MCAST_SNOOPING:
2030 case QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR:
2031 case QEMU_IFLA_BR_MCAST_QUERIER:
2032 case QEMU_IFLA_BR_NF_CALL_IPTABLES:
2033 case QEMU_IFLA_BR_NF_CALL_IP6TABLES:
2034 case QEMU_IFLA_BR_NF_CALL_ARPTABLES:
2035 break;
2036 /* uint16_t */
2037 case QEMU_IFLA_BR_PRIORITY:
2038 case QEMU_IFLA_BR_VLAN_PROTOCOL:
2039 case QEMU_IFLA_BR_GROUP_FWD_MASK:
2040 case QEMU_IFLA_BR_ROOT_PORT:
2041 case QEMU_IFLA_BR_VLAN_DEFAULT_PVID:
2042 u16 = NLA_DATA(nlattr);
2043 *u16 = tswap16(*u16);
2044 break;
2045 /* uint32_t */
2046 case QEMU_IFLA_BR_FORWARD_DELAY:
2047 case QEMU_IFLA_BR_HELLO_TIME:
2048 case QEMU_IFLA_BR_MAX_AGE:
2049 case QEMU_IFLA_BR_AGEING_TIME:
2050 case QEMU_IFLA_BR_STP_STATE:
2051 case QEMU_IFLA_BR_ROOT_PATH_COST:
2052 case QEMU_IFLA_BR_MCAST_HASH_ELASTICITY:
2053 case QEMU_IFLA_BR_MCAST_HASH_MAX:
2054 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT:
2055 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT:
2056 u32 = NLA_DATA(nlattr);
2057 *u32 = tswap32(*u32);
2058 break;
2059 /* uint64_t */
2060 case QEMU_IFLA_BR_HELLO_TIMER:
2061 case QEMU_IFLA_BR_TCN_TIMER:
2062 case QEMU_IFLA_BR_GC_TIMER:
2063 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER:
2064 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL:
2065 case QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL:
2066 case QEMU_IFLA_BR_MCAST_QUERIER_INTVL:
2067 case QEMU_IFLA_BR_MCAST_QUERY_INTVL:
2068 case QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL:
2069 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL:
2070 u64 = NLA_DATA(nlattr);
2071 *u64 = tswap64(*u64);
2072 break;
2073 /* ifla_bridge_id: uin8_t[] */
2074 case QEMU_IFLA_BR_ROOT_ID:
2075 case QEMU_IFLA_BR_BRIDGE_ID:
2076 break;
2077 default:
2078 gemu_log("Unknown QEMU_IFLA_BR type %d\n", nlattr->nla_type);
2079 break;
2080 }
2081 return 0;
2082 }
2083
2084 static abi_long host_to_target_slave_data_bridge_nlattr(struct nlattr *nlattr,
2085 void *context)
2086 {
2087 uint16_t *u16;
2088 uint32_t *u32;
2089 uint64_t *u64;
2090
2091 switch (nlattr->nla_type) {
2092 /* uint8_t */
2093 case QEMU_IFLA_BRPORT_STATE:
2094 case QEMU_IFLA_BRPORT_MODE:
2095 case QEMU_IFLA_BRPORT_GUARD:
2096 case QEMU_IFLA_BRPORT_PROTECT:
2097 case QEMU_IFLA_BRPORT_FAST_LEAVE:
2098 case QEMU_IFLA_BRPORT_LEARNING:
2099 case QEMU_IFLA_BRPORT_UNICAST_FLOOD:
2100 case QEMU_IFLA_BRPORT_PROXYARP:
2101 case QEMU_IFLA_BRPORT_LEARNING_SYNC:
2102 case QEMU_IFLA_BRPORT_PROXYARP_WIFI:
2103 case QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK:
2104 case QEMU_IFLA_BRPORT_CONFIG_PENDING:
2105 case QEMU_IFLA_BRPORT_MULTICAST_ROUTER:
2106 break;
2107 /* uint16_t */
2108 case QEMU_IFLA_BRPORT_PRIORITY:
2109 case QEMU_IFLA_BRPORT_DESIGNATED_PORT:
2110 case QEMU_IFLA_BRPORT_DESIGNATED_COST:
2111 case QEMU_IFLA_BRPORT_ID:
2112 case QEMU_IFLA_BRPORT_NO:
2113 u16 = NLA_DATA(nlattr);
2114 *u16 = tswap16(*u16);
2115 break;
2116 /* uin32_t */
2117 case QEMU_IFLA_BRPORT_COST:
2118 u32 = NLA_DATA(nlattr);
2119 *u32 = tswap32(*u32);
2120 break;
2121 /* uint64_t */
2122 case QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER:
2123 case QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER:
2124 case QEMU_IFLA_BRPORT_HOLD_TIMER:
2125 u64 = NLA_DATA(nlattr);
2126 *u64 = tswap64(*u64);
2127 break;
2128 /* ifla_bridge_id: uint8_t[] */
2129 case QEMU_IFLA_BRPORT_ROOT_ID:
2130 case QEMU_IFLA_BRPORT_BRIDGE_ID:
2131 break;
2132 default:
2133 gemu_log("Unknown QEMU_IFLA_BRPORT type %d\n", nlattr->nla_type);
2134 break;
2135 }
2136 return 0;
2137 }
2138
2139 struct linkinfo_context {
2140 int len;
2141 char *name;
2142 int slave_len;
2143 char *slave_name;
2144 };
2145
2146 static abi_long host_to_target_data_linkinfo_nlattr(struct nlattr *nlattr,
2147 void *context)
2148 {
2149 struct linkinfo_context *li_context = context;
2150
2151 switch (nlattr->nla_type) {
2152 /* string */
2153 case QEMU_IFLA_INFO_KIND:
2154 li_context->name = NLA_DATA(nlattr);
2155 li_context->len = nlattr->nla_len - NLA_HDRLEN;
2156 break;
2157 case QEMU_IFLA_INFO_SLAVE_KIND:
2158 li_context->slave_name = NLA_DATA(nlattr);
2159 li_context->slave_len = nlattr->nla_len - NLA_HDRLEN;
2160 break;
2161 /* stats */
2162 case QEMU_IFLA_INFO_XSTATS:
2163 /* FIXME: only used by CAN */
2164 break;
2165 /* nested */
2166 case QEMU_IFLA_INFO_DATA:
2167 if (strncmp(li_context->name, "bridge",
2168 li_context->len) == 0) {
2169 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
2170 nlattr->nla_len,
2171 NULL,
2172 host_to_target_data_bridge_nlattr);
2173 } else {
2174 gemu_log("Unknown QEMU_IFLA_INFO_KIND %s\n", li_context->name);
2175 }
2176 break;
2177 case QEMU_IFLA_INFO_SLAVE_DATA:
2178 if (strncmp(li_context->slave_name, "bridge",
2179 li_context->slave_len) == 0) {
2180 return host_to_target_for_each_nlattr(NLA_DATA(nlattr),
2181 nlattr->nla_len,
2182 NULL,
2183 host_to_target_slave_data_bridge_nlattr);
2184 } else {
2185 gemu_log("Unknown QEMU_IFLA_INFO_SLAVE_KIND %s\n",
2186 li_context->slave_name);
2187 }
2188 break;
2189 default:
2190 gemu_log("Unknown host QEMU_IFLA_INFO type: %d\n", nlattr->nla_type);
2191 break;
2192 }
2193
2194 return 0;
2195 }
2196
2197 static abi_long host_to_target_data_inet_nlattr(struct nlattr *nlattr,
2198 void *context)
2199 {
2200 uint32_t *u32;
2201 int i;
2202
2203 switch (nlattr->nla_type) {
2204 case QEMU_IFLA_INET_CONF:
2205 u32 = NLA_DATA(nlattr);
2206 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
2207 i++) {
2208 u32[i] = tswap32(u32[i]);
2209 }
2210 break;
2211 default:
2212 gemu_log("Unknown host AF_INET type: %d\n", nlattr->nla_type);
2213 }
2214 return 0;
2215 }
2216
2217 static abi_long host_to_target_data_inet6_nlattr(struct nlattr *nlattr,
2218 void *context)
2219 {
2220 uint32_t *u32;
2221 uint64_t *u64;
2222 struct ifla_cacheinfo *ci;
2223 int i;
2224
2225 switch (nlattr->nla_type) {
2226 /* binaries */
2227 case QEMU_IFLA_INET6_TOKEN:
2228 break;
2229 /* uint8_t */
2230 case QEMU_IFLA_INET6_ADDR_GEN_MODE:
2231 break;
2232 /* uint32_t */
2233 case QEMU_IFLA_INET6_FLAGS:
2234 u32 = NLA_DATA(nlattr);
2235 *u32 = tswap32(*u32);
2236 break;
2237 /* uint32_t[] */
2238 case QEMU_IFLA_INET6_CONF:
2239 u32 = NLA_DATA(nlattr);
2240 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32);
2241 i++) {
2242 u32[i] = tswap32(u32[i]);
2243 }
2244 break;
2245 /* ifla_cacheinfo */
2246 case QEMU_IFLA_INET6_CACHEINFO:
2247 ci = NLA_DATA(nlattr);
2248 ci->max_reasm_len = tswap32(ci->max_reasm_len);
2249 ci->tstamp = tswap32(ci->tstamp);
2250 ci->reachable_time = tswap32(ci->reachable_time);
2251 ci->retrans_time = tswap32(ci->retrans_time);
2252 break;
2253 /* uint64_t[] */
2254 case QEMU_IFLA_INET6_STATS:
2255 case QEMU_IFLA_INET6_ICMP6STATS:
2256 u64 = NLA_DATA(nlattr);
2257 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u64);
2258 i++) {
2259 u64[i] = tswap64(u64[i]);
2260 }
2261 break;
2262 default:
2263 gemu_log("Unknown host AF_INET6 type: %d\n", nlattr->nla_type);
2264 }
2265 return 0;
2266 }
2267
2268 static abi_long host_to_target_data_spec_nlattr(struct nlattr *nlattr,
2269 void *context)
2270 {
2271 switch (nlattr->nla_type) {
2272 case AF_INET:
2273 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
2274 NULL,
2275 host_to_target_data_inet_nlattr);
2276 case AF_INET6:
2277 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len,
2278 NULL,
2279 host_to_target_data_inet6_nlattr);
2280 default:
2281 gemu_log("Unknown host AF_SPEC type: %d\n", nlattr->nla_type);
2282 break;
2283 }
2284 return 0;
2285 }
2286
2287 static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr)
2288 {
2289 uint32_t *u32;
2290 struct rtnl_link_stats *st;
2291 struct rtnl_link_stats64 *st64;
2292 struct rtnl_link_ifmap *map;
2293 struct linkinfo_context li_context;
2294
2295 switch (rtattr->rta_type) {
2296 /* binary stream */
2297 case QEMU_IFLA_ADDRESS:
2298 case QEMU_IFLA_BROADCAST:
2299 /* string */
2300 case QEMU_IFLA_IFNAME:
2301 case QEMU_IFLA_QDISC:
2302 break;
2303 /* uin8_t */
2304 case QEMU_IFLA_OPERSTATE:
2305 case QEMU_IFLA_LINKMODE:
2306 case QEMU_IFLA_CARRIER:
2307 case QEMU_IFLA_PROTO_DOWN:
2308 break;
2309 /* uint32_t */
2310 case QEMU_IFLA_MTU:
2311 case QEMU_IFLA_LINK:
2312 case QEMU_IFLA_WEIGHT:
2313 case QEMU_IFLA_TXQLEN:
2314 case QEMU_IFLA_CARRIER_CHANGES:
2315 case QEMU_IFLA_NUM_RX_QUEUES:
2316 case QEMU_IFLA_NUM_TX_QUEUES:
2317 case QEMU_IFLA_PROMISCUITY:
2318 case QEMU_IFLA_EXT_MASK:
2319 case QEMU_IFLA_LINK_NETNSID:
2320 case QEMU_IFLA_GROUP:
2321 case QEMU_IFLA_MASTER:
2322 case QEMU_IFLA_NUM_VF:
2323 u32 = RTA_DATA(rtattr);
2324 *u32 = tswap32(*u32);
2325 break;
2326 /* struct rtnl_link_stats */
2327 case QEMU_IFLA_STATS:
2328 st = RTA_DATA(rtattr);
2329 st->rx_packets = tswap32(st->rx_packets);
2330 st->tx_packets = tswap32(st->tx_packets);
2331 st->rx_bytes = tswap32(st->rx_bytes);
2332 st->tx_bytes = tswap32(st->tx_bytes);
2333 st->rx_errors = tswap32(st->rx_errors);
2334 st->tx_errors = tswap32(st->tx_errors);
2335 st->rx_dropped = tswap32(st->rx_dropped);
2336 st->tx_dropped = tswap32(st->tx_dropped);
2337 st->multicast = tswap32(st->multicast);
2338 st->collisions = tswap32(st->collisions);
2339
2340 /* detailed rx_errors: */
2341 st->rx_length_errors = tswap32(st->rx_length_errors);
2342 st->rx_over_errors = tswap32(st->rx_over_errors);
2343 st->rx_crc_errors = tswap32(st->rx_crc_errors);
2344 st->rx_frame_errors = tswap32(st->rx_frame_errors);
2345 st->rx_fifo_errors = tswap32(st->rx_fifo_errors);
2346 st->rx_missed_errors = tswap32(st->rx_missed_errors);
2347
2348 /* detailed tx_errors */
2349 st->tx_aborted_errors = tswap32(st->tx_aborted_errors);
2350 st->tx_carrier_errors = tswap32(st->tx_carrier_errors);
2351 st->tx_fifo_errors = tswap32(st->tx_fifo_errors);
2352 st->tx_heartbeat_errors = tswap32(st->tx_heartbeat_errors);
2353 st->tx_window_errors = tswap32(st->tx_window_errors);
2354
2355 /* for cslip etc */
2356 st->rx_compressed = tswap32(st->rx_compressed);
2357 st->tx_compressed = tswap32(st->tx_compressed);
2358 break;
2359 /* struct rtnl_link_stats64 */
2360 case QEMU_IFLA_STATS64:
2361 st64 = RTA_DATA(rtattr);
2362 st64->rx_packets = tswap64(st64->rx_packets);
2363 st64->tx_packets = tswap64(st64->tx_packets);
2364 st64->rx_bytes = tswap64(st64->rx_bytes);
2365 st64->tx_bytes = tswap64(st64->tx_bytes);
2366 st64->rx_errors = tswap64(st64->rx_errors);
2367 st64->tx_errors = tswap64(st64->tx_errors);
2368 st64->rx_dropped = tswap64(st64->rx_dropped);
2369 st64->tx_dropped = tswap64(st64->tx_dropped);
2370 st64->multicast = tswap64(st64->multicast);
2371 st64->collisions = tswap64(st64->collisions);
2372
2373 /* detailed rx_errors: */
2374 st64->rx_length_errors = tswap64(st64->rx_length_errors);
2375 st64->rx_over_errors = tswap64(st64->rx_over_errors);
2376 st64->rx_crc_errors = tswap64(st64->rx_crc_errors);
2377 st64->rx_frame_errors = tswap64(st64->rx_frame_errors);
2378 st64->rx_fifo_errors = tswap64(st64->rx_fifo_errors);
2379 st64->rx_missed_errors = tswap64(st64->rx_missed_errors);
2380
2381 /* detailed tx_errors */
2382 st64->tx_aborted_errors = tswap64(st64->tx_aborted_errors);
2383 st64->tx_carrier_errors = tswap64(st64->tx_carrier_errors);
2384 st64->tx_fifo_errors = tswap64(st64->tx_fifo_errors);
2385 st64->tx_heartbeat_errors = tswap64(st64->tx_heartbeat_errors);
2386 st64->tx_window_errors = tswap64(st64->tx_window_errors);
2387
2388 /* for cslip etc */
2389 st64->rx_compressed = tswap64(st64->rx_compressed);
2390 st64->tx_compressed = tswap64(st64->tx_compressed);
2391 break;
2392 /* struct rtnl_link_ifmap */
2393 case QEMU_IFLA_MAP:
2394 map = RTA_DATA(rtattr);
2395 map->mem_start = tswap64(map->mem_start);
2396 map->mem_end = tswap64(map->mem_end);
2397 map->base_addr = tswap64(map->base_addr);
2398 map->irq = tswap16(map->irq);
2399 break;
2400 /* nested */
2401 case QEMU_IFLA_LINKINFO:
2402 memset(&li_context, 0, sizeof(li_context));
2403 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
2404 &li_context,
2405 host_to_target_data_linkinfo_nlattr);
2406 case QEMU_IFLA_AF_SPEC:
2407 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len,
2408 NULL,
2409 host_to_target_data_spec_nlattr);
2410 default:
2411 gemu_log("Unknown host QEMU_IFLA type: %d\n", rtattr->rta_type);
2412 break;
2413 }
2414 return 0;
2415 }
2416
2417 static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr)
2418 {
2419 uint32_t *u32;
2420 struct ifa_cacheinfo *ci;
2421
2422 switch (rtattr->rta_type) {
2423 /* binary: depends on family type */
2424 case IFA_ADDRESS:
2425 case IFA_LOCAL:
2426 break;
2427 /* string */
2428 case IFA_LABEL:
2429 break;
2430 /* u32 */
2431 case IFA_FLAGS:
2432 case IFA_BROADCAST:
2433 u32 = RTA_DATA(rtattr);
2434 *u32 = tswap32(*u32);
2435 break;
2436 /* struct ifa_cacheinfo */
2437 case IFA_CACHEINFO:
2438 ci = RTA_DATA(rtattr);
2439 ci->ifa_prefered = tswap32(ci->ifa_prefered);
2440 ci->ifa_valid = tswap32(ci->ifa_valid);
2441 ci->cstamp = tswap32(ci->cstamp);
2442 ci->tstamp = tswap32(ci->tstamp);
2443 break;
2444 default:
2445 gemu_log("Unknown host IFA type: %d\n", rtattr->rta_type);
2446 break;
2447 }
2448 return 0;
2449 }
2450
2451 static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr)
2452 {
2453 uint32_t *u32;
2454 switch (rtattr->rta_type) {
2455 /* binary: depends on family type */
2456 case RTA_GATEWAY:
2457 case RTA_DST:
2458 case RTA_PREFSRC:
2459 break;
2460 /* u32 */
2461 case RTA_PRIORITY:
2462 case RTA_TABLE:
2463 case RTA_OIF:
2464 u32 = RTA_DATA(rtattr);
2465 *u32 = tswap32(*u32);
2466 break;
2467 default:
2468 gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type);
2469 break;
2470 }
2471 return 0;
2472 }
2473
2474 static abi_long host_to_target_link_rtattr(struct rtattr *rtattr,
2475 uint32_t rtattr_len)
2476 {
2477 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2478 host_to_target_data_link_rtattr);
2479 }
2480
2481 static abi_long host_to_target_addr_rtattr(struct rtattr *rtattr,
2482 uint32_t rtattr_len)
2483 {
2484 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2485 host_to_target_data_addr_rtattr);
2486 }
2487
2488 static abi_long host_to_target_route_rtattr(struct rtattr *rtattr,
2489 uint32_t rtattr_len)
2490 {
2491 return host_to_target_for_each_rtattr(rtattr, rtattr_len,
2492 host_to_target_data_route_rtattr);
2493 }
2494
2495 static abi_long host_to_target_data_route(struct nlmsghdr *nlh)
2496 {
2497 uint32_t nlmsg_len;
2498 struct ifinfomsg *ifi;
2499 struct ifaddrmsg *ifa;
2500 struct rtmsg *rtm;
2501
2502 nlmsg_len = nlh->nlmsg_len;
2503 switch (nlh->nlmsg_type) {
2504 case RTM_NEWLINK:
2505 case RTM_DELLINK:
2506 case RTM_GETLINK:
2507 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
2508 ifi = NLMSG_DATA(nlh);
2509 ifi->ifi_type = tswap16(ifi->ifi_type);
2510 ifi->ifi_index = tswap32(ifi->ifi_index);
2511 ifi->ifi_flags = tswap32(ifi->ifi_flags);
2512 ifi->ifi_change = tswap32(ifi->ifi_change);
2513 host_to_target_link_rtattr(IFLA_RTA(ifi),
2514 nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
2515 }
2516 break;
2517 case RTM_NEWADDR:
2518 case RTM_DELADDR:
2519 case RTM_GETADDR:
2520 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
2521 ifa = NLMSG_DATA(nlh);
2522 ifa->ifa_index = tswap32(ifa->ifa_index);
2523 host_to_target_addr_rtattr(IFA_RTA(ifa),
2524 nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
2525 }
2526 break;
2527 case RTM_NEWROUTE:
2528 case RTM_DELROUTE:
2529 case RTM_GETROUTE:
2530 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
2531 rtm = NLMSG_DATA(nlh);
2532 rtm->rtm_flags = tswap32(rtm->rtm_flags);
2533 host_to_target_route_rtattr(RTM_RTA(rtm),
2534 nlmsg_len - NLMSG_LENGTH(sizeof(*rtm)));
2535 }
2536 break;
2537 default:
2538 return -TARGET_EINVAL;
2539 }
2540 return 0;
2541 }
2542
2543 static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh,
2544 size_t len)
2545 {
2546 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route);
2547 }
2548
2549 static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr,
2550 size_t len,
2551 abi_long (*target_to_host_rtattr)
2552 (struct rtattr *))
2553 {
2554 abi_long ret;
2555
2556 while (len >= sizeof(struct rtattr)) {
2557 if (tswap16(rtattr->rta_len) < sizeof(struct rtattr) ||
2558 tswap16(rtattr->rta_len) > len) {
2559 break;
2560 }
2561 rtattr->rta_len = tswap16(rtattr->rta_len);
2562 rtattr->rta_type = tswap16(rtattr->rta_type);
2563 ret = target_to_host_rtattr(rtattr);
2564 if (ret < 0) {
2565 return ret;
2566 }
2567 len -= RTA_ALIGN(rtattr->rta_len);
2568 rtattr = (struct rtattr *)(((char *)rtattr) +
2569 RTA_ALIGN(rtattr->rta_len));
2570 }
2571 return 0;
2572 }
2573
2574 static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr)
2575 {
2576 switch (rtattr->rta_type) {
2577 default:
2578 gemu_log("Unknown target QEMU_IFLA type: %d\n", rtattr->rta_type);
2579 break;
2580 }
2581 return 0;
2582 }
2583
2584 static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr)
2585 {
2586 switch (rtattr->rta_type) {
2587 /* binary: depends on family type */
2588 case IFA_LOCAL:
2589 case IFA_ADDRESS:
2590 break;
2591 default:
2592 gemu_log("Unknown target IFA type: %d\n", rtattr->rta_type);
2593 break;
2594 }
2595 return 0;
2596 }
2597
2598 static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr)
2599 {
2600 uint32_t *u32;
2601 switch (rtattr->rta_type) {
2602 /* binary: depends on family type */
2603 case RTA_DST:
2604 case RTA_SRC:
2605 case RTA_GATEWAY:
2606 break;
2607 /* u32 */
2608 case RTA_PRIORITY:
2609 case RTA_OIF:
2610 u32 = RTA_DATA(rtattr);
2611 *u32 = tswap32(*u32);
2612 break;
2613 default:
2614 gemu_log("Unknown target RTA type: %d\n", rtattr->rta_type);
2615 break;
2616 }
2617 return 0;
2618 }
2619
2620 static void target_to_host_link_rtattr(struct rtattr *rtattr,
2621 uint32_t rtattr_len)
2622 {
2623 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2624 target_to_host_data_link_rtattr);
2625 }
2626
2627 static void target_to_host_addr_rtattr(struct rtattr *rtattr,
2628 uint32_t rtattr_len)
2629 {
2630 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2631 target_to_host_data_addr_rtattr);
2632 }
2633
2634 static void target_to_host_route_rtattr(struct rtattr *rtattr,
2635 uint32_t rtattr_len)
2636 {
2637 target_to_host_for_each_rtattr(rtattr, rtattr_len,
2638 target_to_host_data_route_rtattr);
2639 }
2640
2641 static abi_long target_to_host_data_route(struct nlmsghdr *nlh)
2642 {
2643 struct ifinfomsg *ifi;
2644 struct ifaddrmsg *ifa;
2645 struct rtmsg *rtm;
2646
2647 switch (nlh->nlmsg_type) {
2648 case RTM_GETLINK:
2649 break;
2650 case RTM_NEWLINK:
2651 case RTM_DELLINK:
2652 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
2653 ifi = NLMSG_DATA(nlh);
2654 ifi->ifi_type = tswap16(ifi->ifi_type);
2655 ifi->ifi_index = tswap32(ifi->ifi_index);
2656 ifi->ifi_flags = tswap32(ifi->ifi_flags);
2657 ifi->ifi_change = tswap32(ifi->ifi_change);
2658 target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len -
2659 NLMSG_LENGTH(sizeof(*ifi)));
2660 }
2661 break;
2662 case RTM_GETADDR:
2663 case RTM_NEWADDR:
2664 case RTM_DELADDR:
2665 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) {
2666 ifa = NLMSG_DATA(nlh);
2667 ifa->ifa_index = tswap32(ifa->ifa_index);
2668 target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len -
2669 NLMSG_LENGTH(sizeof(*ifa)));
2670 }
2671 break;
2672 case RTM_GETROUTE:
2673 break;
2674 case RTM_NEWROUTE:
2675 case RTM_DELROUTE:
2676 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
2677 rtm = NLMSG_DATA(nlh);
2678 rtm->rtm_flags = tswap32(rtm->rtm_flags);
2679 target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len -
2680 NLMSG_LENGTH(sizeof(*rtm)));
2681 }
2682 break;
2683 default:
2684 return -TARGET_EOPNOTSUPP;
2685 }
2686 return 0;
2687 }
2688
2689 static abi_long target_to_host_nlmsg_route(struct nlmsghdr *nlh, size_t len)
2690 {
2691 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_route);
2692 }
2693 #endif /* CONFIG_RTNETLINK */
2694
2695 static abi_long host_to_target_data_audit(struct nlmsghdr *nlh)
2696 {
2697 switch (nlh->nlmsg_type) {
2698 default:
2699 gemu_log("Unknown host audit message type %d\n",
2700 nlh->nlmsg_type);
2701 return -TARGET_EINVAL;
2702 }
2703 return 0;
2704 }
2705
2706 static inline abi_long host_to_target_nlmsg_audit(struct nlmsghdr *nlh,
2707 size_t len)
2708 {
2709 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_audit);
2710 }
2711
2712 static abi_long target_to_host_data_audit(struct nlmsghdr *nlh)
2713 {
2714 switch (nlh->nlmsg_type) {
2715 case AUDIT_USER:
2716 case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
2717 case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2:
2718 break;
2719 default:
2720 gemu_log("Unknown target audit message type %d\n",
2721 nlh->nlmsg_type);
2722 return -TARGET_EINVAL;
2723 }
2724
2725 return 0;
2726 }
2727
2728 static abi_long target_to_host_nlmsg_audit(struct nlmsghdr *nlh, size_t len)
2729 {
2730 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_audit);
2731 }
2732
2733 /* do_setsockopt() Must return target values and target errnos. */
2734 static abi_long do_setsockopt(int sockfd, int level, int optname,
2735 abi_ulong optval_addr, socklen_t optlen)
2736 {
2737 abi_long ret;
2738 int val;
2739 struct ip_mreqn *ip_mreq;
2740 struct ip_mreq_source *ip_mreq_source;
2741
2742 switch(level) {
2743 case SOL_TCP:
2744 /* TCP options all take an 'int' value. */
2745 if (optlen < sizeof(uint32_t))
2746 return -TARGET_EINVAL;
2747
2748 if (get_user_u32(val, optval_addr))
2749 return -TARGET_EFAULT;
2750 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2751 break;
2752 case SOL_IP:
2753 switch(optname) {
2754 case IP_TOS:
2755 case IP_TTL:
2756 case IP_HDRINCL:
2757 case IP_ROUTER_ALERT:
2758 case IP_RECVOPTS:
2759 case IP_RETOPTS:
2760 case IP_PKTINFO:
2761 case IP_MTU_DISCOVER:
2762 case IP_RECVERR:
2763 case IP_RECVTOS:
2764 #ifdef IP_FREEBIND
2765 case IP_FREEBIND:
2766 #endif
2767 case IP_MULTICAST_TTL:
2768 case IP_MULTICAST_LOOP:
2769 val = 0;
2770 if (optlen >= sizeof(uint32_t)) {
2771 if (get_user_u32(val, optval_addr))
2772 return -TARGET_EFAULT;
2773 } else if (optlen >= 1) {
2774 if (get_user_u8(val, optval_addr))
2775 return -TARGET_EFAULT;
2776 }
2777 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2778 break;
2779 case IP_ADD_MEMBERSHIP:
2780 case IP_DROP_MEMBERSHIP:
2781 if (optlen < sizeof (struct target_ip_mreq) ||
2782 optlen > sizeof (struct target_ip_mreqn))
2783 return -TARGET_EINVAL;
2784
2785 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2786 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2787 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2788 break;
2789
2790 case IP_BLOCK_SOURCE:
2791 case IP_UNBLOCK_SOURCE:
2792 case IP_ADD_SOURCE_MEMBERSHIP:
2793 case IP_DROP_SOURCE_MEMBERSHIP:
2794 if (optlen != sizeof (struct target_ip_mreq_source))
2795 return -TARGET_EINVAL;
2796
2797 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2798 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2799 unlock_user (ip_mreq_source, optval_addr, 0);
2800 break;
2801
2802 default:
2803 goto unimplemented;
2804 }
2805 break;
2806 case SOL_IPV6:
2807 switch (optname) {
2808 case IPV6_MTU_DISCOVER:
2809 case IPV6_MTU:
2810 case IPV6_V6ONLY:
2811 case IPV6_RECVPKTINFO:
2812 val = 0;
2813 if (optlen < sizeof(uint32_t)) {
2814 return -TARGET_EINVAL;
2815 }
2816 if (get_user_u32(val, optval_addr)) {
2817 return -TARGET_EFAULT;
2818 }
2819 ret = get_errno(setsockopt(sockfd, level, optname,
2820 &val, sizeof(val)));
2821 break;
2822 default:
2823 goto unimplemented;
2824 }
2825 break;
2826 case SOL_RAW:
2827 switch (optname) {
2828 case ICMP_FILTER:
2829 /* struct icmp_filter takes an u32 value */
2830 if (optlen < sizeof(uint32_t)) {
2831 return -TARGET_EINVAL;
2832 }
2833
2834 if (get_user_u32(val, optval_addr)) {
2835 return -TARGET_EFAULT;
2836 }
2837 ret = get_errno(setsockopt(sockfd, level, optname,
2838 &val, sizeof(val)));
2839 break;
2840
2841 default:
2842 goto unimplemented;
2843 }
2844 break;
2845 case TARGET_SOL_SOCKET:
2846 switch (optname) {
2847 case TARGET_SO_RCVTIMEO:
2848 {
2849 struct timeval tv;
2850
2851 optname = SO_RCVTIMEO;
2852
2853 set_timeout:
2854 if (optlen != sizeof(struct target_timeval)) {
2855 return -TARGET_EINVAL;
2856 }
2857
2858 if (copy_from_user_timeval(&tv, optval_addr)) {
2859 return -TARGET_EFAULT;
2860 }
2861
2862 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2863 &tv, sizeof(tv)));
2864 return ret;
2865 }
2866 case TARGET_SO_SNDTIMEO:
2867 optname = SO_SNDTIMEO;
2868 goto set_timeout;
2869 case TARGET_SO_ATTACH_FILTER:
2870 {
2871 struct target_sock_fprog *tfprog;
2872 struct target_sock_filter *tfilter;
2873 struct sock_fprog fprog;
2874 struct sock_filter *filter;
2875 int i;
2876
2877 if (optlen != sizeof(*tfprog)) {
2878 return -TARGET_EINVAL;
2879 }
2880 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2881 return -TARGET_EFAULT;
2882 }
2883 if (!lock_user_struct(VERIFY_READ, tfilter,
2884 tswapal(tfprog->filter), 0)) {
2885 unlock_user_struct(tfprog, optval_addr, 1);
2886 return -TARGET_EFAULT;
2887 }
2888
2889 fprog.len = tswap16(tfprog->len);
2890 filter = g_try_new(struct sock_filter, fprog.len);
2891 if (filter == NULL) {
2892 unlock_user_struct(tfilter, tfprog->filter, 1);
2893 unlock_user_struct(tfprog, optval_addr, 1);
2894 return -TARGET_ENOMEM;
2895 }
2896 for (i = 0; i < fprog.len; i++) {
2897 filter[i].code = tswap16(tfilter[i].code);
2898 filter[i].jt = tfilter[i].jt;
2899 filter[i].jf = tfilter[i].jf;
2900 filter[i].k = tswap32(tfilter[i].k);
2901 }
2902 fprog.filter = filter;
2903
2904 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2905 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2906 g_free(filter);
2907
2908 unlock_user_struct(tfilter, tfprog->filter, 1);
2909 unlock_user_struct(tfprog, optval_addr, 1);
2910 return ret;
2911 }
2912 case TARGET_SO_BINDTODEVICE:
2913 {
2914 char *dev_ifname, *addr_ifname;
2915
2916 if (optlen > IFNAMSIZ - 1) {
2917 optlen = IFNAMSIZ - 1;
2918 }
2919 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2920 if (!dev_ifname) {
2921 return -TARGET_EFAULT;
2922 }
2923 optname = SO_BINDTODEVICE;
2924 addr_ifname = alloca(IFNAMSIZ);
2925 memcpy(addr_ifname, dev_ifname, optlen);
2926 addr_ifname[optlen] = 0;
2927 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2928 addr_ifname, optlen));
2929 unlock_user (dev_ifname, optval_addr, 0);
2930 return ret;
2931 }
2932 /* Options with 'int' argument. */
2933 case TARGET_SO_DEBUG:
2934 optname = SO_DEBUG;
2935 break;
2936 case TARGET_SO_REUSEADDR:
2937 optname = SO_REUSEADDR;
2938 break;
2939 case TARGET_SO_TYPE:
2940 optname = SO_TYPE;
2941 break;
2942 case TARGET_SO_ERROR:
2943 optname = SO_ERROR;
2944 break;
2945 case TARGET_SO_DONTROUTE:
2946 optname = SO_DONTROUTE;
2947 break;
2948 case TARGET_SO_BROADCAST:
2949 optname = SO_BROADCAST;
2950 break;
2951 case TARGET_SO_SNDBUF:
2952 optname = SO_SNDBUF;
2953 break;
2954 case TARGET_SO_SNDBUFFORCE:
2955 optname = SO_SNDBUFFORCE;
2956 break;
2957 case TARGET_SO_RCVBUF:
2958 optname = SO_RCVBUF;
2959 break;
2960 case TARGET_SO_RCVBUFFORCE:
2961 optname = SO_RCVBUFFORCE;
2962 break;
2963 case TARGET_SO_KEEPALIVE:
2964 optname = SO_KEEPALIVE;
2965 break;
2966 case TARGET_SO_OOBINLINE:
2967 optname = SO_OOBINLINE;
2968 break;
2969 case TARGET_SO_NO_CHECK:
2970 optname = SO_NO_CHECK;
2971 break;
2972 case TARGET_SO_PRIORITY:
2973 optname = SO_PRIORITY;
2974 break;
2975 #ifdef SO_BSDCOMPAT
2976 case TARGET_SO_BSDCOMPAT:
2977 optname = SO_BSDCOMPAT;
2978 break;
2979 #endif
2980 case TARGET_SO_PASSCRED:
2981 optname = SO_PASSCRED;
2982 break;
2983 case TARGET_SO_PASSSEC:
2984 optname = SO_PASSSEC;
2985 break;
2986 case TARGET_SO_TIMESTAMP:
2987 optname = SO_TIMESTAMP;
2988 break;
2989 case TARGET_SO_RCVLOWAT:
2990 optname = SO_RCVLOWAT;
2991 break;
2992 break;
2993 default:
2994 goto unimplemented;
2995 }
2996 if (optlen < sizeof(uint32_t))
2997 return -TARGET_EINVAL;
2998
2999 if (get_user_u32(val, optval_addr))
3000 return -TARGET_EFAULT;
3001 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
3002 break;
3003 default:
3004 unimplemented:
3005 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname);
3006 ret = -TARGET_ENOPROTOOPT;
3007 }
3008 return ret;
3009 }
3010
3011 /* do_getsockopt() Must return target values and target errnos. */
3012 static abi_long do_getsockopt(int sockfd, int level, int optname,
3013 abi_ulong optval_addr, abi_ulong optlen)
3014 {
3015 abi_long ret;
3016 int len, val;
3017 socklen_t lv;
3018
3019 switch(level) {
3020 case TARGET_SOL_SOCKET:
3021 level = SOL_SOCKET;
3022 switch (optname) {
3023 /* These don't just return a single integer */
3024 case TARGET_SO_LINGER:
3025 case TARGET_SO_RCVTIMEO:
3026 case TARGET_SO_SNDTIMEO:
3027 case TARGET_SO_PEERNAME:
3028 goto unimplemented;
3029 case TARGET_SO_PEERCRED: {
3030 struct ucred cr;
3031 socklen_t crlen;
3032 struct target_ucred *tcr;
3033
3034 if (get_user_u32(len, optlen)) {
3035 return -TARGET_EFAULT;
3036 }
3037 if (len < 0) {
3038 return -TARGET_EINVAL;
3039 }
3040
3041 crlen = sizeof(cr);
3042 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
3043 &cr, &crlen));
3044 if (ret < 0) {
3045 return ret;
3046 }
3047 if (len > crlen) {
3048 len = crlen;
3049 }
3050 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
3051 return -TARGET_EFAULT;
3052 }
3053 __put_user(cr.pid, &tcr->pid);
3054 __put_user(cr.uid, &tcr->uid);
3055 __put_user(cr.gid, &tcr->gid);
3056 unlock_user_struct(tcr, optval_addr, 1);
3057 if (put_user_u32(len, optlen)) {
3058 return -TARGET_EFAULT;
3059 }
3060 break;
3061 }
3062 /* Options with 'int' argument. */
3063 case TARGET_SO_DEBUG:
3064 optname = SO_DEBUG;
3065 goto int_case;
3066 case TARGET_SO_REUSEADDR:
3067 optname = SO_REUSEADDR;
3068 goto int_case;
3069 case TARGET_SO_TYPE:
3070 optname = SO_TYPE;
3071 goto int_case;
3072 case TARGET_SO_ERROR:
3073 optname = SO_ERROR;
3074 goto int_case;
3075 case TARGET_SO_DONTROUTE:
3076 optname = SO_DONTROUTE;
3077 goto int_case;
3078 case TARGET_SO_BROADCAST:
3079 optname = SO_BROADCAST;
3080 goto int_case;
3081 case TARGET_SO_SNDBUF:
3082 optname = SO_SNDBUF;
3083 goto int_case;
3084 case TARGET_SO_RCVBUF:
3085 optname = SO_RCVBUF;
3086 goto int_case;
3087 case TARGET_SO_KEEPALIVE:
3088 optname = SO_KEEPALIVE;
3089 goto int_case;
3090 case TARGET_SO_OOBINLINE:
3091 optname = SO_OOBINLINE;
3092 goto int_case;
3093 case TARGET_SO_NO_CHECK:
3094 optname = SO_NO_CHECK;
3095 goto int_case;
3096 case TARGET_SO_PRIORITY:
3097 optname = SO_PRIORITY;
3098 goto int_case;
3099 #ifdef SO_BSDCOMPAT
3100 case TARGET_SO_BSDCOMPAT:
3101 optname = SO_BSDCOMPAT;
3102 goto int_case;
3103 #endif
3104 case TARGET_SO_PASSCRED:
3105 optname = SO_PASSCRED;
3106 goto int_case;
3107 case TARGET_SO_TIMESTAMP:
3108 optname = SO_TIMESTAMP;
3109 goto int_case;
3110 case TARGET_SO_RCVLOWAT:
3111 optname = SO_RCVLOWAT;
3112 goto int_case;
3113 case TARGET_SO_ACCEPTCONN:
3114 optname = SO_ACCEPTCONN;
3115 goto int_case;
3116 default:
3117 goto int_case;
3118 }
3119 break;
3120 case SOL_TCP:
3121 /* TCP options all take an 'int' value. */
3122 int_case:
3123 if (get_user_u32(len, optlen))
3124 return -TARGET_EFAULT;
3125 if (len < 0)
3126 return -TARGET_EINVAL;
3127 lv = sizeof(lv);
3128 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
3129 if (ret < 0)
3130 return ret;
3131 if (optname == SO_TYPE) {
3132 val = host_to_target_sock_type(val);
3133 }
3134 if (len > lv)
3135 len = lv;
3136 if (len == 4) {
3137 if (put_user_u32(val, optval_addr))
3138 return -TARGET_EFAULT;
3139 } else {
3140 if (put_user_u8(val, optval_addr))
3141 return -TARGET_EFAULT;
3142 }
3143 if (put_user_u32(len, optlen))
3144 return -TARGET_EFAULT;
3145 break;
3146 case SOL_IP:
3147 switch(optname) {
3148 case IP_TOS:
3149 case IP_TTL:
3150 case IP_HDRINCL:
3151 case IP_ROUTER_ALERT:
3152 case IP_RECVOPTS:
3153 case IP_RETOPTS:
3154 case IP_PKTINFO:
3155 case IP_MTU_DISCOVER:
3156 case IP_RECVERR:
3157 case IP_RECVTOS:
3158 #ifdef IP_FREEBIND
3159 case IP_FREEBIND:
3160 #endif
3161 case IP_MULTICAST_TTL:
3162 case IP_MULTICAST_LOOP:
3163 if (get_user_u32(len, optlen))
3164 return -TARGET_EFAULT;
3165 if (len < 0)
3166 return -TARGET_EINVAL;
3167 lv = sizeof(lv);
3168 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
3169 if (ret < 0)
3170 return ret;
3171 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
3172 len = 1;
3173 if (put_user_u32(len, optlen)
3174 || put_user_u8(val, optval_addr))
3175 return -TARGET_EFAULT;
3176 } else {
3177 if (len > sizeof(int))
3178 len = sizeof(int);
3179 if (put_user_u32(len, optlen)
3180 || put_user_u32(val, optval_addr))
3181 return -TARGET_EFAULT;
3182 }
3183 break;
3184 default:
3185 ret = -TARGET_ENOPROTOOPT;
3186 break;
3187 }
3188 break;
3189 default:
3190 unimplemented:
3191 gemu_log("getsockopt level=%d optname=%d not yet supported\n",
3192 level, optname);
3193 ret = -TARGET_EOPNOTSUPP;
3194 break;
3195 }
3196 return ret;
3197 }
3198
3199 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
3200 abi_ulong count, int copy)
3201 {
3202 struct target_iovec *target_vec;
3203 struct iovec *vec;
3204 abi_ulong total_len, max_len;
3205 int i;
3206 int err = 0;
3207 bool bad_address = false;
3208
3209 if (count == 0) {
3210 errno = 0;
3211 return NULL;
3212 }
3213 if (count > IOV_MAX) {
3214 errno = EINVAL;
3215 return NULL;
3216 }
3217
3218 vec = g_try_new0(struct iovec, count);
3219 if (vec == NULL) {
3220 errno = ENOMEM;
3221 return NULL;
3222 }
3223
3224 target_vec = lock_user(VERIFY_READ, target_addr,
3225 count * sizeof(struct target_iovec), 1);
3226 if (target_vec == NULL) {
3227 err = EFAULT;
3228 goto fail2;
3229 }
3230
3231 /* ??? If host page size > target page size, this will result in a
3232 value larger than what we can actually support. */
3233 max_len = 0x7fffffff & TARGET_PAGE_MASK;
3234 total_len = 0;
3235
3236 for (i = 0; i < count; i++) {
3237 abi_ulong base = tswapal(target_vec[i].iov_base);
3238 abi_long len = tswapal(target_vec[i].iov_len);
3239
3240 if (len < 0) {
3241 err = EINVAL;
3242 goto fail;
3243 } else if (len == 0) {
3244 /* Zero length pointer is ignored. */
3245 vec[i].iov_base = 0;
3246 } else {
3247 vec[i].iov_base = lock_user(type, base, len, copy);
3248 /* If the first buffer pointer is bad, this is a fault. But
3249 * subsequent bad buffers will result in a partial write; this
3250 * is realized by filling the vector with null pointers and
3251 * zero lengths. */
3252 if (!vec[i].iov_base) {
3253 if (i == 0) {
3254 err = EFAULT;
3255 goto fail;
3256 } else {
3257 bad_address = true;
3258 }
3259 }
3260 if (bad_address) {
3261 len = 0;
3262 }
3263 if (len > max_len - total_len) {
3264 len = max_len - total_len;
3265 }
3266 }
3267 vec[i].iov_len = len;
3268 total_len += len;
3269 }
3270
3271 unlock_user(target_vec, target_addr, 0);
3272 return vec;
3273
3274 fail:
3275 while (--i >= 0) {
3276 if (tswapal(target_vec[i].iov_len) > 0) {
3277 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3278 }
3279 }
3280 unlock_user(target_vec, target_addr, 0);
3281 fail2:
3282 g_free(vec);
3283 errno = err;
3284 return NULL;
3285 }
3286
3287 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3288 abi_ulong count, int copy)
3289 {
3290 struct target_iovec *target_vec;
3291 int i;
3292
3293 target_vec = lock_user(VERIFY_READ, target_addr,
3294 count * sizeof(struct target_iovec), 1);
3295 if (target_vec) {
3296 for (i = 0; i < count; i++) {
3297 abi_ulong base = tswapal(target_vec[i].iov_base);
3298 abi_long len = tswapal(target_vec[i].iov_len);
3299 if (len < 0) {
3300 break;
3301 }
3302 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3303 }
3304 unlock_user(target_vec, target_addr, 0);
3305 }
3306
3307 g_free(vec);
3308 }
3309
3310 static inline int target_to_host_sock_type(int *type)
3311 {
3312 int host_type = 0;
3313 int target_type = *type;
3314
3315 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3316 case TARGET_SOCK_DGRAM:
3317 host_type = SOCK_DGRAM;
3318 break;
3319 case TARGET_SOCK_STREAM:
3320 host_type = SOCK_STREAM;
3321 break;
3322 default:
3323 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3324 break;
3325 }
3326 if (target_type & TARGET_SOCK_CLOEXEC) {
3327 #if defined(SOCK_CLOEXEC)
3328 host_type |= SOCK_CLOEXEC;
3329 #else
3330 return -TARGET_EINVAL;
3331 #endif
3332 }
3333 if (target_type & TARGET_SOCK_NONBLOCK) {
3334 #if defined(SOCK_NONBLOCK)
3335 host_type |= SOCK_NONBLOCK;
3336 #elif !defined(O_NONBLOCK)
3337 return -TARGET_EINVAL;
3338 #endif
3339 }
3340 *type = host_type;
3341 return 0;
3342 }
3343
3344 /* Try to emulate socket type flags after socket creation. */
3345 static int sock_flags_fixup(int fd, int target_type)
3346 {
3347 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3348 if (target_type & TARGET_SOCK_NONBLOCK) {
3349 int flags = fcntl(fd, F_GETFL);
3350 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3351 close(fd);
3352 return -TARGET_EINVAL;
3353 }
3354 }
3355 #endif
3356 return fd;
3357 }
3358
3359 static abi_long packet_target_to_host_sockaddr(void *host_addr,
3360 abi_ulong target_addr,
3361 socklen_t len)
3362 {
3363 struct sockaddr *addr = host_addr;
3364 struct target_sockaddr *target_saddr;
3365
3366 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
3367 if (!target_saddr) {
3368 return -TARGET_EFAULT;
3369 }
3370
3371 memcpy(addr, target_saddr, len);
3372 addr->sa_family = tswap16(target_saddr->sa_family);
3373 /* spkt_protocol is big-endian */
3374
3375 unlock_user(target_saddr, target_addr, 0);
3376 return 0;
3377 }
3378
3379 static TargetFdTrans target_packet_trans = {
3380 .target_to_host_addr = packet_target_to_host_sockaddr,
3381 };
3382
3383 #ifdef CONFIG_RTNETLINK
3384 static abi_long netlink_route_target_to_host(void *buf, size_t len)
3385 {
3386 abi_long ret;
3387
3388 ret = target_to_host_nlmsg_route(buf, len);
3389 if (ret < 0) {
3390 return ret;
3391 }
3392
3393 return len;
3394 }
3395
3396 static abi_long netlink_route_host_to_target(void *buf, size_t len)
3397 {
3398 abi_long ret;
3399
3400 ret = host_to_target_nlmsg_route(buf, len);
3401 if (ret < 0) {
3402 return ret;
3403 }
3404
3405 return len;
3406 }
3407
3408 static TargetFdTrans target_netlink_route_trans = {
3409 .target_to_host_data = netlink_route_target_to_host,
3410 .host_to_target_data = netlink_route_host_to_target,
3411 };
3412 #endif /* CONFIG_RTNETLINK */
3413
3414 static abi_long netlink_audit_target_to_host(void *buf, size_t len)
3415 {
3416 abi_long ret;
3417
3418 ret = target_to_host_nlmsg_audit(buf, len);
3419 if (ret < 0) {
3420 return ret;
3421 }
3422
3423 return len;
3424 }
3425
3426 static abi_long netlink_audit_host_to_target(void *buf, size_t len)
3427 {
3428 abi_long ret;
3429
3430 ret = host_to_target_nlmsg_audit(buf, len);
3431 if (ret < 0) {
3432 return ret;
3433 }
3434
3435 return len;
3436 }
3437
3438 static TargetFdTrans target_netlink_audit_trans = {
3439 .target_to_host_data = netlink_audit_target_to_host,
3440 .host_to_target_data = netlink_audit_host_to_target,
3441 };
3442
3443 /* do_socket() Must return target values and target errnos. */
3444 static abi_long do_socket(int domain, int type, int protocol)
3445 {
3446 int target_type = type;
3447 int ret;
3448
3449 ret = target_to_host_sock_type(&type);
3450 if (ret) {
3451 return ret;
3452 }
3453
3454 if (domain == PF_NETLINK && !(
3455 #ifdef CONFIG_RTNETLINK
3456 protocol == NETLINK_ROUTE ||
3457 #endif
3458 protocol == NETLINK_KOBJECT_UEVENT ||
3459 protocol == NETLINK_AUDIT)) {
3460 return -EPFNOSUPPORT;
3461 }
3462
3463 if (domain == AF_PACKET ||
3464 (domain == AF_INET && type == SOCK_PACKET)) {
3465 protocol = tswap16(protocol);
3466 }
3467
3468 ret = get_errno(socket(domain, type, protocol));
3469 if (ret >= 0) {
3470 ret = sock_flags_fixup(ret, target_type);
3471 if (type == SOCK_PACKET) {
3472 /* Manage an obsolete case :
3473 * if socket type is SOCK_PACKET, bind by name
3474 */
3475 fd_trans_register(ret, &target_packet_trans);
3476 } else if (domain == PF_NETLINK) {
3477 switch (protocol) {
3478 #ifdef CONFIG_RTNETLINK
3479 case NETLINK_ROUTE:
3480 fd_trans_register(ret, &target_netlink_route_trans);
3481 break;
3482 #endif
3483 case NETLINK_KOBJECT_UEVENT:
3484 /* nothing to do: messages are strings */
3485 break;
3486 case NETLINK_AUDIT:
3487 fd_trans_register(ret, &target_netlink_audit_trans);
3488 break;
3489 default:
3490 g_assert_not_reached();
3491 }
3492 }
3493 }
3494 return ret;
3495 }
3496
3497 /* do_bind() Must return target values and target errnos. */
3498 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3499 socklen_t addrlen)
3500 {
3501 void *addr;
3502 abi_long ret;
3503
3504 if ((int)addrlen < 0) {
3505 return -TARGET_EINVAL;
3506 }
3507
3508 addr = alloca(addrlen+1);
3509
3510 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3511 if (ret)
3512 return ret;
3513
3514 return get_errno(bind(sockfd, addr, addrlen));
3515 }
3516
3517 /* do_connect() Must return target values and target errnos. */
3518 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3519 socklen_t addrlen)
3520 {
3521 void *addr;
3522 abi_long ret;
3523
3524 if ((int)addrlen < 0) {
3525 return -TARGET_EINVAL;
3526 }
3527
3528 addr = alloca(addrlen+1);
3529
3530 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3531 if (ret)
3532 return ret;
3533
3534 return get_errno(safe_connect(sockfd, addr, addrlen));
3535 }
3536
3537 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3538 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3539 int flags, int send)
3540 {
3541 abi_long ret, len;
3542 struct msghdr msg;
3543 abi_ulong count;
3544 struct iovec *vec;
3545 abi_ulong target_vec;
3546
3547 if (msgp->msg_name) {
3548 msg.msg_namelen = tswap32(msgp->msg_namelen);
3549 msg.msg_name = alloca(msg.msg_namelen+1);
3550 ret = target_to_host_sockaddr(fd, msg.msg_name,
3551 tswapal(msgp->msg_name),
3552 msg.msg_namelen);
3553 if (ret == -TARGET_EFAULT) {
3554 /* For connected sockets msg_name and msg_namelen must
3555 * be ignored, so returning EFAULT immediately is wrong.
3556 * Instead, pass a bad msg_name to the host kernel, and
3557 * let it decide whether to return EFAULT or not.
3558 */
3559 msg.msg_name = (void *)-1;
3560 } else if (ret) {
3561 goto out2;
3562 }
3563 } else {
3564 msg.msg_name = NULL;
3565 msg.msg_namelen = 0;
3566 }
3567 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3568 msg.msg_control = alloca(msg.msg_controllen);
3569 msg.msg_flags = tswap32(msgp->msg_flags);
3570
3571 count = tswapal(msgp->msg_iovlen);
3572 target_vec = tswapal(msgp->msg_iov);
3573
3574 if (count > IOV_MAX) {
3575 /* sendrcvmsg returns a different errno for this condition than
3576 * readv/writev, so we must catch it here before lock_iovec() does.
3577 */
3578 ret = -TARGET_EMSGSIZE;
3579 goto out2;
3580 }
3581
3582 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3583 target_vec, count, send);
3584 if (vec == NULL) {
3585 ret = -host_to_target_errno(errno);
3586 goto out2;
3587 }
3588 msg.msg_iovlen = count;
3589 msg.msg_iov = vec;
3590
3591 if (send) {
3592 if (fd_trans_target_to_host_data(fd)) {
3593 void *host_msg;
3594
3595 host_msg = g_malloc(msg.msg_iov->iov_len);
3596 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3597 ret = fd_trans_target_to_host_data(fd)(host_msg,
3598 msg.msg_iov->iov_len);
3599 if (ret >= 0) {
3600 msg.msg_iov->iov_base = host_msg;
3601 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3602 }
3603 g_free(host_msg);
3604 } else {
3605 ret = target_to_host_cmsg(&msg, msgp);
3606 if (ret == 0) {
3607 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3608 }
3609 }
3610 } else {
3611 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3612 if (!is_error(ret)) {
3613 len = ret;
3614 if (fd_trans_host_to_target_data(fd)) {
3615 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3616 len);
3617 } else {
3618 ret = host_to_target_cmsg(msgp, &msg);
3619 }
3620 if (!is_error(ret)) {
3621 msgp->msg_namelen = tswap32(msg.msg_namelen);
3622 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3623 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3624 msg.msg_name, msg.msg_namelen);
3625 if (ret) {
3626 goto out;
3627 }
3628 }
3629
3630 ret = len;
3631 }
3632 }
3633 }
3634
3635 out:
3636 unlock_iovec(vec, target_vec, count, !send);
3637 out2:
3638 return ret;
3639 }
3640
3641 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3642 int flags, int send)
3643 {
3644 abi_long ret;
3645 struct target_msghdr *msgp;
3646
3647 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3648 msgp,
3649 target_msg,
3650 send ? 1 : 0)) {
3651 return -TARGET_EFAULT;
3652 }
3653 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3654 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3655 return ret;
3656 }
3657
3658 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3659 * so it might not have this *mmsg-specific flag either.
3660 */
3661 #ifndef MSG_WAITFORONE
3662 #define MSG_WAITFORONE 0x10000
3663 #endif
3664
3665 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3666 unsigned int vlen, unsigned int flags,
3667 int send)
3668 {
3669 struct target_mmsghdr *mmsgp;
3670 abi_long ret = 0;
3671 int i;
3672
3673 if (vlen > UIO_MAXIOV) {
3674 vlen = UIO_MAXIOV;
3675 }
3676
3677 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3678 if (!mmsgp) {
3679 return -TARGET_EFAULT;
3680 }
3681
3682 for (i = 0; i < vlen; i++) {
3683 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3684 if (is_error(ret)) {
3685 break;
3686 }
3687 mmsgp[i].msg_len = tswap32(ret);
3688 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3689 if (flags & MSG_WAITFORONE) {
3690 flags |= MSG_DONTWAIT;
3691 }
3692 }
3693
3694 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3695
3696 /* Return number of datagrams sent if we sent any at all;
3697 * otherwise return the error.
3698 */
3699 if (i) {
3700 return i;
3701 }
3702 return ret;
3703 }
3704
3705 /* do_accept4() Must return target values and target errnos. */
3706 static abi_long do_accept4(int fd, abi_ulong target_addr,
3707 abi_ulong target_addrlen_addr, int flags)
3708 {
3709 socklen_t addrlen;
3710 void *addr;
3711 abi_long ret;
3712 int host_flags;
3713
3714 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3715
3716 if (target_addr == 0) {
3717 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3718 }
3719
3720 /* linux returns EINVAL if addrlen pointer is invalid */
3721 if (get_user_u32(addrlen, target_addrlen_addr))
3722 return -TARGET_EINVAL;
3723
3724 if ((int)addrlen < 0) {
3725 return -TARGET_EINVAL;
3726 }
3727
3728 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3729 return -TARGET_EINVAL;
3730
3731 addr = alloca(addrlen);
3732
3733 ret = get_errno(safe_accept4(fd, addr, &addrlen, host_flags));
3734 if (!is_error(ret)) {
3735 host_to_target_sockaddr(target_addr, addr, addrlen);
3736 if (put_user_u32(addrlen, target_addrlen_addr))
3737 ret = -TARGET_EFAULT;
3738 }
3739 return ret;
3740 }
3741
3742 /* do_getpeername() Must return target values and target errnos. */
3743 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3744 abi_ulong target_addrlen_addr)
3745 {
3746 socklen_t addrlen;
3747 void *addr;
3748 abi_long ret;
3749
3750 if (get_user_u32(addrlen, target_addrlen_addr))
3751 return -TARGET_EFAULT;
3752
3753 if ((int)addrlen < 0) {
3754 return -TARGET_EINVAL;
3755 }
3756
3757 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3758 return -TARGET_EFAULT;
3759
3760 addr = alloca(addrlen);
3761
3762 ret = get_errno(getpeername(fd, addr, &addrlen));
3763 if (!is_error(ret)) {
3764 host_to_target_sockaddr(target_addr, addr, addrlen);
3765 if (put_user_u32(addrlen, target_addrlen_addr))
3766 ret = -TARGET_EFAULT;
3767 }
3768 return ret;
3769 }
3770
3771 /* do_getsockname() Must return target values and target errnos. */
3772 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3773 abi_ulong target_addrlen_addr)
3774 {
3775 socklen_t addrlen;
3776 void *addr;
3777 abi_long ret;
3778
3779 if (get_user_u32(addrlen, target_addrlen_addr))
3780 return -TARGET_EFAULT;
3781
3782 if ((int)addrlen < 0) {
3783 return -TARGET_EINVAL;
3784 }
3785
3786 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3787 return -TARGET_EFAULT;
3788
3789 addr = alloca(addrlen);
3790
3791 ret = get_errno(getsockname(fd, addr, &addrlen));
3792 if (!is_error(ret)) {
3793 host_to_target_sockaddr(target_addr, addr, addrlen);
3794 if (put_user_u32(addrlen, target_addrlen_addr))
3795 ret = -TARGET_EFAULT;
3796 }
3797 return ret;
3798 }
3799
3800 /* do_socketpair() Must return target values and target errnos. */
3801 static abi_long do_socketpair(int domain, int type, int protocol,
3802 abi_ulong target_tab_addr)
3803 {
3804 int tab[2];
3805 abi_long ret;
3806
3807 target_to_host_sock_type(&type);
3808
3809 ret = get_errno(socketpair(domain, type, protocol, tab));
3810 if (!is_error(ret)) {
3811 if (put_user_s32(tab[0], target_tab_addr)
3812 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3813 ret = -TARGET_EFAULT;
3814 }
3815 return ret;
3816 }
3817
3818 /* do_sendto() Must return target values and target errnos. */
3819 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3820 abi_ulong target_addr, socklen_t addrlen)
3821 {
3822 void *addr;
3823 void *host_msg;
3824 void *copy_msg = NULL;
3825 abi_long ret;
3826
3827 if ((int)addrlen < 0) {
3828 return -TARGET_EINVAL;
3829 }
3830
3831 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3832 if (!host_msg)
3833 return -TARGET_EFAULT;
3834 if (fd_trans_target_to_host_data(fd)) {
3835 copy_msg = host_msg;
3836 host_msg = g_malloc(len);
3837 memcpy(host_msg, copy_msg, len);
3838 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3839 if (ret < 0) {
3840 goto fail;
3841 }
3842 }
3843 if (target_addr) {
3844 addr = alloca(addrlen+1);
3845 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3846 if (ret) {
3847 goto fail;
3848 }
3849 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3850 } else {
3851 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3852 }
3853 fail:
3854 if (copy_msg) {
3855 g_free(host_msg);
3856 host_msg = copy_msg;
3857 }
3858 unlock_user(host_msg, msg, 0);
3859 return ret;
3860 }
3861
3862 /* do_recvfrom() Must return target values and target errnos. */
3863 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3864 abi_ulong target_addr,
3865 abi_ulong target_addrlen)
3866 {
3867 socklen_t addrlen;
3868 void *addr;
3869 void *host_msg;
3870 abi_long ret;
3871
3872 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3873 if (!host_msg)
3874 return -TARGET_EFAULT;
3875 if (target_addr) {
3876 if (get_user_u32(addrlen, target_addrlen)) {
3877 ret = -TARGET_EFAULT;
3878 goto fail;
3879 }
3880 if ((int)addrlen < 0) {
3881 ret = -TARGET_EINVAL;
3882 goto fail;
3883 }
3884 addr = alloca(addrlen);
3885 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3886 addr, &addrlen));
3887 } else {
3888 addr = NULL; /* To keep compiler quiet. */
3889 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3890 }
3891 if (!is_error(ret)) {
3892 if (fd_trans_host_to_target_data(fd)) {
3893 ret = fd_trans_host_to_target_data(fd)(host_msg, ret);
3894 }
3895 if (target_addr) {
3896 host_to_target_sockaddr(target_addr, addr, addrlen);
3897 if (put_user_u32(addrlen, target_addrlen)) {
3898 ret = -TARGET_EFAULT;
3899 goto fail;
3900 }
3901 }
3902 unlock_user(host_msg, msg, len);
3903 } else {
3904 fail:
3905 unlock_user(host_msg, msg, 0);
3906 }
3907 return ret;
3908 }
3909
3910 #ifdef TARGET_NR_socketcall
3911 /* do_socketcall() must return target values and target errnos. */
3912 static abi_long do_socketcall(int num, abi_ulong vptr)
3913 {
3914 static const unsigned nargs[] = { /* number of arguments per operation */
3915 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3916 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3917 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3918 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3919 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3920 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3921 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3922 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3923 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3924 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3925 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3926 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3927 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3928 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3929 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3930 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3931 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3932 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3933 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3934 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3935 };
3936 abi_long a[6]; /* max 6 args */
3937 unsigned i;
3938
3939 /* check the range of the first argument num */
3940 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3941 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3942 return -TARGET_EINVAL;
3943 }
3944 /* ensure we have space for args */
3945 if (nargs[num] > ARRAY_SIZE(a)) {
3946 return -TARGET_EINVAL;
3947 }
3948 /* collect the arguments in a[] according to nargs[] */
3949 for (i = 0; i < nargs[num]; ++i) {
3950 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3951 return -TARGET_EFAULT;
3952 }
3953 }
3954 /* now when we have the args, invoke the appropriate underlying function */
3955 switch (num) {
3956 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3957 return do_socket(a[0], a[1], a[2]);
3958 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3959 return do_bind(a[0], a[1], a[2]);
3960 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3961 return do_connect(a[0], a[1], a[2]);
3962 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3963 return get_errno(listen(a[0], a[1]));
3964 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3965 return do_accept4(a[0], a[1], a[2], 0);
3966 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3967 return do_getsockname(a[0], a[1], a[2]);
3968 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3969 return do_getpeername(a[0], a[1], a[2]);
3970 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3971 return do_socketpair(a[0], a[1], a[2], a[3]);
3972 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3973 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3974 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3975 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3976 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3977 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3978 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3979 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3980 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3981 return get_errno(shutdown(a[0], a[1]));
3982 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3983 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3984 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3985 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3986 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3987 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3988 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3989 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3990 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3991 return do_accept4(a[0], a[1], a[2], a[3]);
3992 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3993 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3994 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3995 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3996 default:
3997 gemu_log("Unsupported socketcall: %d\n", num);
3998 return -TARGET_EINVAL;
3999 }
4000 }
4001 #endif
4002
4003 #define N_SHM_REGIONS 32
4004
4005 static struct shm_region {
4006 abi_ulong start;
4007 abi_ulong size;
4008 bool in_use;
4009 } shm_regions[N_SHM_REGIONS];
4010
4011 #ifndef TARGET_SEMID64_DS
4012 /* asm-generic version of this struct */
4013 struct target_semid64_ds
4014 {
4015 struct target_ipc_perm sem_perm;
4016 abi_ulong sem_otime;
4017 #if TARGET_ABI_BITS == 32
4018 abi_ulong __unused1;
4019 #endif
4020 abi_ulong sem_ctime;
4021 #if TARGET_ABI_BITS == 32
4022 abi_ulong __unused2;
4023 #endif
4024 abi_ulong sem_nsems;
4025 abi_ulong __unused3;
4026 abi_ulong __unused4;
4027 };
4028 #endif
4029
4030 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
4031 abi_ulong target_addr)
4032 {
4033 struct target_ipc_perm *target_ip;
4034 struct target_semid64_ds *target_sd;
4035
4036 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4037 return -TARGET_EFAULT;
4038 target_ip = &(target_sd->sem_perm);
4039 host_ip->__key = tswap32(target_ip->__key);
4040 host_ip->uid = tswap32(target_ip->uid);
4041 host_ip->gid = tswap32(target_ip->gid);
4042 host_ip->cuid = tswap32(target_ip->cuid);
4043 host_ip->cgid = tswap32(target_ip->cgid);
4044 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
4045 host_ip->mode = tswap32(target_ip->mode);
4046 #else
4047 host_ip->mode = tswap16(target_ip->mode);
4048 #endif
4049 #if defined(TARGET_PPC)
4050 host_ip->__seq = tswap32(target_ip->__seq);
4051 #else
4052 host_ip->__seq = tswap16(target_ip->__seq);
4053 #endif
4054 unlock_user_struct(target_sd, target_addr, 0);
4055 return 0;
4056 }
4057
4058 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
4059 struct ipc_perm *host_ip)
4060 {
4061 struct target_ipc_perm *target_ip;
4062 struct target_semid64_ds *target_sd;
4063
4064 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4065 return -TARGET_EFAULT;
4066 target_ip = &(target_sd->sem_perm);
4067 target_ip->__key = tswap32(host_ip->__key);
4068 target_ip->uid = tswap32(host_ip->uid);
4069 target_ip->gid = tswap32(host_ip->gid);
4070 target_ip->cuid = tswap32(host_ip->cuid);
4071 target_ip->cgid = tswap32(host_ip->cgid);
4072 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
4073 target_ip->mode = tswap32(host_ip->mode);
4074 #else
4075 target_ip->mode = tswap16(host_ip->mode);
4076 #endif
4077 #if defined(TARGET_PPC)
4078 target_ip->__seq = tswap32(host_ip->__seq);
4079 #else
4080 target_ip->__seq = tswap16(host_ip->__seq);
4081 #endif
4082 unlock_user_struct(target_sd, target_addr, 1);
4083 return 0;
4084 }
4085
4086 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
4087 abi_ulong target_addr)
4088 {
4089 struct target_semid64_ds *target_sd;
4090
4091 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4092 return -TARGET_EFAULT;
4093 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
4094 return -TARGET_EFAULT;
4095 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
4096 host_sd->sem_otime = tswapal(target_sd->sem_otime);
4097 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
4098 unlock_user_struct(target_sd, target_addr, 0);
4099 return 0;
4100 }
4101
4102 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
4103 struct semid_ds *host_sd)
4104 {
4105 struct target_semid64_ds *target_sd;
4106
4107 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4108 return -TARGET_EFAULT;
4109 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
4110 return -TARGET_EFAULT;
4111 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
4112 target_sd->sem_otime = tswapal(host_sd->sem_otime);
4113 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
4114 unlock_user_struct(target_sd, target_addr, 1);
4115 return 0;
4116 }
4117
4118 struct target_seminfo {
4119 int semmap;
4120 int semmni;
4121 int semmns;
4122 int semmnu;
4123 int semmsl;
4124 int semopm;
4125 int semume;
4126 int semusz;
4127 int semvmx;
4128 int semaem;
4129 };
4130
4131 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
4132 struct seminfo *host_seminfo)
4133 {
4134 struct target_seminfo *target_seminfo;
4135 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
4136 return -TARGET_EFAULT;
4137 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
4138 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
4139 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
4140 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
4141 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
4142 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
4143 __put_user(host_seminfo->semume, &target_seminfo->semume);
4144 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
4145 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
4146 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
4147 unlock_user_struct(target_seminfo, target_addr, 1);
4148 return 0;
4149 }
4150
4151 union semun {
4152 int val;
4153 struct semid_ds *buf;
4154 unsigned short *array;
4155 struct seminfo *__buf;
4156 };
4157
4158 union target_semun {
4159 int val;
4160 abi_ulong buf;
4161 abi_ulong array;
4162 abi_ulong __buf;
4163 };
4164
4165 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
4166 abi_ulong target_addr)
4167 {
4168 int nsems;
4169 unsigned short *array;
4170 union semun semun;
4171 struct semid_ds semid_ds;
4172 int i, ret;
4173
4174 semun.buf = &semid_ds;
4175
4176 ret = semctl(semid, 0, IPC_STAT, semun);
4177 if (ret == -1)
4178 return get_errno(ret);
4179
4180 nsems = semid_ds.sem_nsems;
4181
4182 *host_array = g_try_new(unsigned short, nsems);
4183 if (!*host_array) {
4184 return -TARGET_ENOMEM;
4185 }
4186 array = lock_user(VERIFY_READ, target_addr,
4187 nsems*sizeof(unsigned short), 1);
4188 if (!array) {
4189 g_free(*host_array);
4190 return -TARGET_EFAULT;
4191 }
4192
4193 for(i=0; i<nsems; i++) {
4194 __get_user((*host_array)[i], &array[i]);
4195 }
4196 unlock_user(array, target_addr, 0);
4197
4198 return 0;
4199 }
4200
4201 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
4202 unsigned short **host_array)
4203 {
4204 int nsems;
4205 unsigned short *array;
4206 union semun semun;
4207 struct semid_ds semid_ds;
4208 int i, ret;
4209
4210 semun.buf = &semid_ds;
4211
4212 ret = semctl(semid, 0, IPC_STAT, semun);
4213 if (ret == -1)
4214 return get_errno(ret);
4215
4216 nsems = semid_ds.sem_nsems;
4217
4218 array = lock_user(VERIFY_WRITE, target_addr,
4219 nsems*sizeof(unsigned short), 0);
4220 if (!array)
4221 return -TARGET_EFAULT;
4222
4223 for(i=0; i<nsems; i++) {
4224 __put_user((*host_array)[i], &array[i]);
4225 }
4226 g_free(*host_array);
4227 unlock_user(array, target_addr, 1);
4228
4229 return 0;
4230 }
4231
4232 static inline abi_long do_semctl(int semid, int semnum, int cmd,
4233 abi_ulong target_arg)
4234 {
4235 union target_semun target_su = { .buf = target_arg };
4236 union semun arg;
4237 struct semid_ds dsarg;
4238 unsigned short *array = NULL;
4239 struct seminfo seminfo;
4240 abi_long ret = -TARGET_EINVAL;
4241 abi_long err;
4242 cmd &= 0xff;
4243
4244 switch( cmd ) {
4245 case GETVAL:
4246 case SETVAL:
4247 /* In 64 bit cross-endian situations, we will erroneously pick up
4248 * the wrong half of the union for the "val" element. To rectify
4249 * this, the entire 8-byte structure is byteswapped, followed by
4250 * a swap of the 4 byte val field. In other cases, the data is
4251 * already in proper host byte order. */
4252 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
4253 target_su.buf = tswapal(target_su.buf);
4254 arg.val = tswap32(target_su.val);
4255 } else {
4256 arg.val = target_su.val;
4257 }
4258 ret = get_errno(semctl(semid, semnum, cmd, arg));
4259 break;
4260 case GETALL:
4261 case SETALL:
4262 err = target_to_host_semarray(semid, &array, target_su.array);
4263 if (err)
4264 return err;
4265 arg.array = array;
4266 ret = get_errno(semctl(semid, semnum, cmd, arg));
4267 err = host_to_target_semarray(semid, target_su.array, &array);
4268 if (err)
4269 return err;
4270 break;
4271 case IPC_STAT:
4272 case IPC_SET:
4273 case SEM_STAT:
4274 err = target_to_host_semid_ds(&dsarg, target_su.buf);
4275 if (err)
4276 return err;
4277 arg.buf = &dsarg;
4278 ret = get_errno(semctl(semid, semnum, cmd, arg));
4279 err = host_to_target_semid_ds(target_su.buf, &dsarg);
4280 if (err)
4281 return err;
4282 break;
4283 case IPC_INFO:
4284 case SEM_INFO:
4285 arg.__buf = &seminfo;
4286 ret = get_errno(semctl(semid, semnum, cmd, arg));
4287 err = host_to_target_seminfo(target_su.__buf, &seminfo);
4288 if (err)
4289 return err;
4290 break;
4291 case IPC_RMID:
4292 case GETPID:
4293 case GETNCNT:
4294 case GETZCNT:
4295 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4296 break;
4297 }
4298
4299 return ret;
4300 }
4301
4302 struct target_sembuf {
4303 unsigned short sem_num;
4304 short sem_op;
4305 short sem_flg;
4306 };
4307
4308 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4309 abi_ulong target_addr,
4310 unsigned nsops)
4311 {
4312 struct target_sembuf *target_sembuf;
4313 int i;
4314
4315 target_sembuf = lock_user(VERIFY_READ, target_addr,
4316 nsops*sizeof(struct target_sembuf), 1);
4317 if (!target_sembuf)
4318 return -TARGET_EFAULT;
4319
4320 for(i=0; i<nsops; i++) {
4321 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4322 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4323 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4324 }
4325
4326 unlock_user(target_sembuf, target_addr, 0);
4327
4328 return 0;
4329 }
4330
4331 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
4332 {
4333 struct sembuf sops[nsops];
4334
4335 if (target_to_host_sembuf(sops, ptr, nsops))
4336 return -TARGET_EFAULT;
4337
4338 return get_errno(safe_semtimedop(semid, sops, nsops, NULL));
4339 }
4340
4341 struct target_msqid_ds
4342 {
4343 struct target_ipc_perm msg_perm;
4344 abi_ulong msg_stime;
4345 #if TARGET_ABI_BITS == 32
4346 abi_ulong __unused1;
4347 #endif
4348 abi_ulong msg_rtime;
4349 #if TARGET_ABI_BITS == 32
4350 abi_ulong __unused2;
4351 #endif
4352 abi_ulong msg_ctime;
4353 #if TARGET_ABI_BITS == 32
4354 abi_ulong __unused3;
4355 #endif
4356 abi_ulong __msg_cbytes;
4357 abi_ulong msg_qnum;
4358 abi_ulong msg_qbytes;
4359 abi_ulong msg_lspid;
4360 abi_ulong msg_lrpid;
4361 abi_ulong __unused4;
4362 abi_ulong __unused5;
4363 };
4364
4365 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4366 abi_ulong target_addr)
4367 {
4368 struct target_msqid_ds *target_md;
4369
4370 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4371 return -TARGET_EFAULT;
4372 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4373 return -TARGET_EFAULT;
4374 host_md->msg_stime = tswapal(target_md->msg_stime);
4375 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4376 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4377 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4378 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4379 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4380 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4381 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4382 unlock_user_struct(target_md, target_addr, 0);
4383 return 0;
4384 }
4385
4386 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4387 struct msqid_ds *host_md)
4388 {
4389 struct target_msqid_ds *target_md;
4390
4391 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4392 return -TARGET_EFAULT;
4393 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4394 return -TARGET_EFAULT;
4395 target_md->msg_stime = tswapal(host_md->msg_stime);
4396 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4397 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4398 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4399 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4400 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4401 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4402 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4403 unlock_user_struct(target_md, target_addr, 1);
4404 return 0;
4405 }
4406
4407 struct target_msginfo {
4408 int msgpool;
4409 int msgmap;
4410 int msgmax;
4411 int msgmnb;
4412 int msgmni;
4413 int msgssz;
4414 int msgtql;
4415 unsigned short int msgseg;
4416 };
4417
4418 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4419 struct msginfo *host_msginfo)
4420 {
4421 struct target_msginfo *target_msginfo;
4422 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4423 return -TARGET_EFAULT;
4424 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4425 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4426 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4427 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4428 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4429 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4430 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4431 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4432 unlock_user_struct(target_msginfo, target_addr, 1);
4433 return 0;
4434 }
4435
4436 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4437 {
4438 struct msqid_ds dsarg;
4439 struct msginfo msginfo;
4440 abi_long ret = -TARGET_EINVAL;
4441
4442 cmd &= 0xff;
4443
4444 switch (cmd) {
4445 case IPC_STAT:
4446 case IPC_SET:
4447 case MSG_STAT:
4448 if (target_to_host_msqid_ds(&dsarg,ptr))
4449 return -TARGET_EFAULT;
4450 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4451 if (host_to_target_msqid_ds(ptr,&dsarg))
4452 return -TARGET_EFAULT;
4453 break;
4454 case IPC_RMID:
4455 ret = get_errno(msgctl(msgid, cmd, NULL));
4456 break;
4457 case IPC_INFO:
4458 case MSG_INFO:
4459 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4460 if (host_to_target_msginfo(ptr, &msginfo))
4461 return -TARGET_EFAULT;
4462 break;
4463 }
4464
4465 return ret;
4466 }
4467
4468 struct target_msgbuf {
4469 abi_long mtype;
4470 char mtext[1];
4471 };
4472
4473 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4474 ssize_t msgsz, int msgflg)
4475 {
4476 struct target_msgbuf *target_mb;
4477 struct msgbuf *host_mb;
4478 abi_long ret = 0;
4479
4480 if (msgsz < 0) {
4481 return -TARGET_EINVAL;
4482 }
4483
4484 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4485 return -TARGET_EFAULT;
4486 host_mb = g_try_malloc(msgsz + sizeof(long));
4487 if (!host_mb) {
4488 unlock_user_struct(target_mb, msgp, 0);
4489 return -TARGET_ENOMEM;
4490 }
4491 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4492 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4493 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4494 g_free(host_mb);
4495 unlock_user_struct(target_mb, msgp, 0);
4496
4497 return ret;
4498 }
4499
4500 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4501 ssize_t msgsz, abi_long msgtyp,
4502 int msgflg)
4503 {
4504 struct target_msgbuf *target_mb;
4505 char *target_mtext;
4506 struct msgbuf *host_mb;
4507 abi_long ret = 0;
4508
4509 if (msgsz < 0) {
4510 return -TARGET_EINVAL;
4511 }
4512
4513 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4514 return -TARGET_EFAULT;
4515
4516 host_mb = g_try_malloc(msgsz + sizeof(long));
4517 if (!host_mb) {
4518 ret = -TARGET_ENOMEM;
4519 goto end;
4520 }
4521 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4522
4523 if (ret > 0) {
4524 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4525 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4526 if (!target_mtext) {
4527 ret = -TARGET_EFAULT;
4528 goto end;
4529 }
4530 memcpy(target_mb->mtext, host_mb->mtext, ret);
4531 unlock_user(target_mtext, target_mtext_addr, ret);
4532 }
4533
4534 target_mb->mtype = tswapal(host_mb->mtype);
4535
4536 end:
4537 if (target_mb)
4538 unlock_user_struct(target_mb, msgp, 1);
4539 g_free(host_mb);
4540 return ret;
4541 }
4542
4543 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4544 abi_ulong target_addr)
4545 {
4546 struct target_shmid_ds *target_sd;
4547
4548 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4549 return -TARGET_EFAULT;
4550 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4551 return -TARGET_EFAULT;
4552 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4553 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4554 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4555 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4556 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4557 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4558 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4559 unlock_user_struct(target_sd, target_addr, 0);
4560 return 0;
4561 }
4562
4563 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4564 struct shmid_ds *host_sd)
4565 {
4566 struct target_shmid_ds *target_sd;
4567
4568 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4569 return -TARGET_EFAULT;
4570 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4571 return -TARGET_EFAULT;
4572 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4573 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4574 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4575 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4576 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4577 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4578 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4579 unlock_user_struct(target_sd, target_addr, 1);
4580 return 0;
4581 }
4582
4583 struct target_shminfo {
4584 abi_ulong shmmax;
4585 abi_ulong shmmin;
4586 abi_ulong shmmni;
4587 abi_ulong shmseg;
4588 abi_ulong shmall;
4589 };
4590
4591 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4592 struct shminfo *host_shminfo)
4593 {
4594 struct target_shminfo *target_shminfo;
4595 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4596 return -TARGET_EFAULT;
4597 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4598 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4599 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4600 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4601 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4602 unlock_user_struct(target_shminfo, target_addr, 1);
4603 return 0;
4604 }
4605
4606 struct target_shm_info {
4607 int used_ids;
4608 abi_ulong shm_tot;
4609 abi_ulong shm_rss;
4610 abi_ulong shm_swp;
4611 abi_ulong swap_attempts;
4612 abi_ulong swap_successes;
4613 };
4614
4615 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4616 struct shm_info *host_shm_info)
4617 {
4618 struct target_shm_info *target_shm_info;
4619 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4620 return -TARGET_EFAULT;
4621 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4622 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4623 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4624 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4625 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4626 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4627 unlock_user_struct(target_shm_info, target_addr, 1);
4628 return 0;
4629 }
4630
4631 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4632 {
4633 struct shmid_ds dsarg;
4634 struct shminfo shminfo;
4635 struct shm_info shm_info;
4636 abi_long ret = -TARGET_EINVAL;
4637
4638 cmd &= 0xff;
4639
4640 switch(cmd) {
4641 case IPC_STAT:
4642 case IPC_SET:
4643 case SHM_STAT:
4644 if (target_to_host_shmid_ds(&dsarg, buf))
4645 return -TARGET_EFAULT;
4646 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4647 if (host_to_target_shmid_ds(buf, &dsarg))
4648 return -TARGET_EFAULT;
4649 break;
4650 case IPC_INFO:
4651 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4652 if (host_to_target_shminfo(buf, &shminfo))
4653 return -TARGET_EFAULT;
4654 break;
4655 case SHM_INFO:
4656 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4657 if (host_to_target_shm_info(buf, &shm_info))
4658 return -TARGET_EFAULT;
4659 break;
4660 case IPC_RMID:
4661 case SHM_LOCK:
4662 case SHM_UNLOCK:
4663 ret = get_errno(shmctl(shmid, cmd, NULL));
4664 break;
4665 }
4666
4667 return ret;
4668 }
4669
4670 #ifndef TARGET_FORCE_SHMLBA
4671 /* For most architectures, SHMLBA is the same as the page size;
4672 * some architectures have larger values, in which case they should
4673 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4674 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4675 * and defining its own value for SHMLBA.
4676 *
4677 * The kernel also permits SHMLBA to be set by the architecture to a
4678 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4679 * this means that addresses are rounded to the large size if
4680 * SHM_RND is set but addresses not aligned to that size are not rejected
4681 * as long as they are at least page-aligned. Since the only architecture
4682 * which uses this is ia64 this code doesn't provide for that oddity.
4683 */
4684 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4685 {
4686 return TARGET_PAGE_SIZE;
4687 }
4688 #endif
4689
4690 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4691 int shmid, abi_ulong shmaddr, int shmflg)
4692 {
4693 abi_long raddr;
4694 void *host_raddr;
4695 struct shmid_ds shm_info;
4696 int i,ret;
4697 abi_ulong shmlba;
4698
4699 /* find out the length of the shared memory segment */
4700 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4701 if (is_error(ret)) {
4702 /* can't get length, bail out */
4703 return ret;
4704 }
4705
4706 shmlba = target_shmlba(cpu_env);
4707
4708 if (shmaddr & (shmlba - 1)) {
4709 if (shmflg & SHM_RND) {
4710 shmaddr &= ~(shmlba - 1);
4711 } else {
4712 return -TARGET_EINVAL;
4713 }
4714 }
4715
4716 mmap_lock();
4717
4718 if (shmaddr)
4719 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
4720 else {
4721 abi_ulong mmap_start;
4722
4723 mmap_start = mmap_find_vma(0, shm_info.shm_segsz);
4724
4725 if (mmap_start == -1) {
4726 errno = ENOMEM;
4727 host_raddr = (void *)-1;
4728 } else
4729 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
4730 }
4731
4732 if (host_raddr == (void *)-1) {
4733 mmap_unlock();
4734 return get_errno((long)host_raddr);
4735 }
4736 raddr=h2g((unsigned long)host_raddr);
4737
4738 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4739 PAGE_VALID | PAGE_READ |
4740 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
4741
4742 for (i = 0; i < N_SHM_REGIONS; i++) {
4743 if (!shm_regions[i].in_use) {
4744 shm_regions[i].in_use = true;
4745 shm_regions[i].start = raddr;
4746 shm_regions[i].size = shm_info.shm_segsz;
4747 break;
4748 }
4749 }
4750
4751 mmap_unlock();
4752 return raddr;
4753
4754 }
4755
4756 static inline abi_long do_shmdt(abi_ulong shmaddr)
4757 {
4758 int i;
4759
4760 for (i = 0; i < N_SHM_REGIONS; ++i) {
4761 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4762 shm_regions[i].in_use = false;
4763 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4764 break;
4765 }
4766 }
4767
4768 return get_errno(shmdt(g2h(shmaddr)));
4769 }
4770
4771 #ifdef TARGET_NR_ipc
4772 /* ??? This only works with linear mappings. */
4773 /* do_ipc() must return target values and target errnos. */
4774 static abi_long do_ipc(CPUArchState *cpu_env,
4775 unsigned int call, abi_long first,
4776 abi_long second, abi_long third,
4777 abi_long ptr, abi_long fifth)
4778 {
4779 int version;
4780 abi_long ret = 0;
4781
4782 version = call >> 16;
4783 call &= 0xffff;
4784
4785 switch (call) {
4786 case IPCOP_semop:
4787 ret = do_semop(first, ptr, second);
4788 break;
4789
4790 case IPCOP_semget:
4791 ret = get_errno(semget(first, second, third));
4792 break;
4793
4794 case IPCOP_semctl: {
4795 /* The semun argument to semctl is passed by value, so dereference the
4796 * ptr argument. */
4797 abi_ulong atptr;
4798 get_user_ual(atptr, ptr);
4799 ret = do_semctl(first, second, third, atptr);
4800 break;
4801 }
4802
4803 case IPCOP_msgget:
4804 ret = get_errno(msgget(first, second));
4805 break;
4806
4807 case IPCOP_msgsnd:
4808 ret = do_msgsnd(first, ptr, second, third);
4809 break;
4810
4811 case IPCOP_msgctl:
4812 ret = do_msgctl(first, second, ptr);
4813 break;
4814
4815 case IPCOP_msgrcv:
4816 switch (version) {
4817 case 0:
4818 {
4819 struct target_ipc_kludge {
4820 abi_long msgp;
4821 abi_long msgtyp;
4822 } *tmp;
4823
4824 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4825 ret = -TARGET_EFAULT;
4826 break;
4827 }
4828
4829 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4830
4831 unlock_user_struct(tmp, ptr, 0);
4832 break;
4833 }
4834 default:
4835 ret = do_msgrcv(first, ptr, second, fifth, third);
4836 }
4837 break;
4838
4839 case IPCOP_shmat:
4840 switch (version) {
4841 default:
4842 {
4843 abi_ulong raddr;
4844 raddr = do_shmat(cpu_env, first, ptr, second);
4845 if (is_error(raddr))
4846 return get_errno(raddr);
4847 if (put_user_ual(raddr, third))
4848 return -TARGET_EFAULT;
4849 break;
4850 }
4851 case 1:
4852 ret = -TARGET_EINVAL;
4853 break;
4854 }
4855 break;
4856 case IPCOP_shmdt:
4857 ret = do_shmdt(ptr);
4858 break;
4859
4860 case IPCOP_shmget:
4861 /* IPC_* flag values are the same on all linux platforms */
4862 ret = get_errno(shmget(first, second, third));
4863 break;
4864
4865 /* IPC_* and SHM_* command values are the same on all linux platforms */
4866 case IPCOP_shmctl:
4867 ret = do_shmctl(first, second, ptr);
4868 break;
4869 default:
4870 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version);
4871 ret = -TARGET_ENOSYS;
4872 break;
4873 }
4874 return ret;
4875 }
4876 #endif
4877
4878 /* kernel structure types definitions */
4879
4880 #define STRUCT(name, ...) STRUCT_ ## name,
4881 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4882 enum {
4883 #include "syscall_types.h"
4884 STRUCT_MAX
4885 };
4886 #undef STRUCT
4887 #undef STRUCT_SPECIAL
4888
4889 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4890 #define STRUCT_SPECIAL(name)
4891 #include "syscall_types.h"
4892 #undef STRUCT
4893 #undef STRUCT_SPECIAL
4894
4895 typedef struct IOCTLEntry IOCTLEntry;
4896
4897 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
4898 int fd, int cmd, abi_long arg);
4899
4900 struct IOCTLEntry {
4901 int target_cmd;
4902 unsigned int host_cmd;
4903 const char *name;
4904 int access;
4905 do_ioctl_fn *do_ioctl;
4906 const argtype arg_type[5];
4907 };
4908
4909 #define IOC_R 0x0001
4910 #define IOC_W 0x0002
4911 #define IOC_RW (IOC_R | IOC_W)
4912
4913 #define MAX_STRUCT_SIZE 4096
4914
4915 #ifdef CONFIG_FIEMAP
4916 /* So fiemap access checks don't overflow on 32 bit systems.
4917 * This is very slightly smaller than the limit imposed by
4918 * the underlying kernel.
4919 */
4920 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4921 / sizeof(struct fiemap_extent))
4922
4923 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4924 int fd, int cmd, abi_long arg)
4925 {
4926 /* The parameter for this ioctl is a struct fiemap followed
4927 * by an array of struct fiemap_extent whose size is set
4928 * in fiemap->fm_extent_count. The array is filled in by the
4929 * ioctl.
4930 */
4931 int target_size_in, target_size_out;
4932 struct fiemap *fm;
4933 const argtype *arg_type = ie->arg_type;
4934 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4935 void *argptr, *p;
4936 abi_long ret;
4937 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4938 uint32_t outbufsz;
4939 int free_fm = 0;
4940
4941 assert(arg_type[0] == TYPE_PTR);
4942 assert(ie->access == IOC_RW);
4943 arg_type++;
4944 target_size_in = thunk_type_size(arg_type, 0);
4945 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4946 if (!argptr) {
4947 return -TARGET_EFAULT;
4948 }
4949 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4950 unlock_user(argptr, arg, 0);
4951 fm = (struct fiemap *)buf_temp;
4952 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4953 return -TARGET_EINVAL;
4954 }
4955
4956 outbufsz = sizeof (*fm) +
4957 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4958
4959 if (outbufsz > MAX_STRUCT_SIZE) {
4960 /* We can't fit all the extents into the fixed size buffer.
4961 * Allocate one that is large enough and use it instead.
4962 */
4963 fm = g_try_malloc(outbufsz);
4964 if (!fm) {
4965 return -TARGET_ENOMEM;
4966 }
4967 memcpy(fm, buf_temp, sizeof(struct fiemap));
4968 free_fm = 1;
4969 }
4970 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4971 if (!is_error(ret)) {
4972 target_size_out = target_size_in;
4973 /* An extent_count of 0 means we were only counting the extents
4974 * so there are no structs to copy
4975 */
4976 if (fm->fm_extent_count != 0) {
4977 target_size_out += fm->fm_mapped_extents * extent_size;
4978 }
4979 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4980 if (!argptr) {
4981 ret = -TARGET_EFAULT;
4982 } else {
4983 /* Convert the struct fiemap */
4984 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4985 if (fm->fm_extent_count != 0) {
4986 p = argptr + target_size_in;
4987 /* ...and then all the struct fiemap_extents */
4988 for (i = 0; i < fm->fm_mapped_extents; i++) {
4989 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4990 THUNK_TARGET);
4991 p += extent_size;
4992 }
4993 }
4994 unlock_user(argptr, arg, target_size_out);
4995 }
4996 }
4997 if (free_fm) {
4998 g_free(fm);
4999 }
5000 return ret;
5001 }
5002 #endif
5003
5004 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
5005 int fd, int cmd, abi_long arg)
5006 {
5007 const argtype *arg_type = ie->arg_type;
5008 int target_size;
5009 void *argptr;
5010 int ret;
5011 struct ifconf *host_ifconf;
5012 uint32_t outbufsz;
5013 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
5014 int target_ifreq_size;
5015 int nb_ifreq;
5016 int free_buf = 0;
5017 int i;
5018 int target_ifc_len;
5019 abi_long target_ifc_buf;
5020 int host_ifc_len;
5021 char *host_ifc_buf;
5022
5023 assert(arg_type[0] == TYPE_PTR);
5024 assert(ie->access == IOC_RW);
5025
5026 arg_type++;
5027 target_size = thunk_type_size(arg_type, 0);
5028
5029 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5030 if (!argptr)
5031 return -TARGET_EFAULT;
5032 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5033 unlock_user(argptr, arg, 0);
5034
5035 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
5036 target_ifc_len = host_ifconf->ifc_len;
5037 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
5038
5039 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
5040 nb_ifreq = target_ifc_len / target_ifreq_size;
5041 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
5042
5043 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
5044 if (outbufsz > MAX_STRUCT_SIZE) {
5045 /* We can't fit all the extents into the fixed size buffer.
5046 * Allocate one that is large enough and use it instead.
5047 */
5048 host_ifconf = malloc(outbufsz);
5049 if (!host_ifconf) {
5050 return -TARGET_ENOMEM;
5051 }
5052 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
5053 free_buf = 1;
5054 }
5055 host_ifc_buf = (char*)host_ifconf + sizeof(*host_ifconf);
5056
5057 host_ifconf->ifc_len = host_ifc_len;
5058 host_ifconf->ifc_buf = host_ifc_buf;
5059
5060 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
5061 if (!is_error(ret)) {
5062 /* convert host ifc_len to target ifc_len */
5063
5064 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
5065 target_ifc_len = nb_ifreq * target_ifreq_size;
5066 host_ifconf->ifc_len = target_ifc_len;
5067
5068 /* restore target ifc_buf */
5069
5070 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
5071
5072 /* copy struct ifconf to target user */
5073
5074 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5075 if (!argptr)
5076 return -TARGET_EFAULT;
5077 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
5078 unlock_user(argptr, arg, target_size);
5079
5080 /* copy ifreq[] to target user */
5081
5082 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
5083 for (i = 0; i < nb_ifreq ; i++) {
5084 thunk_convert(argptr + i * target_ifreq_size,
5085 host_ifc_buf + i * sizeof(struct ifreq),
5086 ifreq_arg_type, THUNK_TARGET);
5087 }
5088 unlock_user(argptr, target_ifc_buf, target_ifc_len);
5089 }
5090
5091 if (free_buf) {
5092 free(host_ifconf);
5093 }
5094
5095 return ret;
5096 }
5097
5098 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5099 int cmd, abi_long arg)
5100 {
5101 void *argptr;
5102 struct dm_ioctl *host_dm;
5103 abi_long guest_data;
5104 uint32_t guest_data_size;
5105 int target_size;
5106 const argtype *arg_type = ie->arg_type;
5107 abi_long ret;
5108 void *big_buf = NULL;
5109 char *host_data;
5110
5111 arg_type++;
5112 target_size = thunk_type_size(arg_type, 0);
5113 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5114 if (!argptr) {
5115 ret = -TARGET_EFAULT;
5116 goto out;
5117 }
5118 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5119 unlock_user(argptr, arg, 0);
5120
5121 /* buf_temp is too small, so fetch things into a bigger buffer */
5122 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5123 memcpy(big_buf, buf_temp, target_size);
5124 buf_temp = big_buf;
5125 host_dm = big_buf;
5126
5127 guest_data = arg + host_dm->data_start;
5128 if ((guest_data - arg) < 0) {
5129 ret = -TARGET_EINVAL;
5130 goto out;
5131 }
5132 guest_data_size = host_dm->data_size - host_dm->data_start;
5133 host_data = (char*)host_dm + host_dm->data_start;
5134
5135 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5136 if (!argptr) {
5137 ret = -TARGET_EFAULT;
5138 goto out;
5139 }
5140
5141 switch (ie->host_cmd) {
5142 case DM_REMOVE_ALL:
5143 case DM_LIST_DEVICES:
5144 case DM_DEV_CREATE:
5145 case DM_DEV_REMOVE:
5146 case DM_DEV_SUSPEND:
5147 case DM_DEV_STATUS:
5148 case DM_DEV_WAIT:
5149 case DM_TABLE_STATUS:
5150 case DM_TABLE_CLEAR:
5151 case DM_TABLE_DEPS:
5152 case DM_LIST_VERSIONS:
5153 /* no input data */
5154 break;
5155 case DM_DEV_RENAME:
5156 case DM_DEV_SET_GEOMETRY:
5157 /* data contains only strings */
5158 memcpy(host_data, argptr, guest_data_size);
5159 break;
5160 case DM_TARGET_MSG:
5161 memcpy(host_data, argptr, guest_data_size);
5162 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5163 break;
5164 case DM_TABLE_LOAD:
5165 {
5166 void *gspec = argptr;
5167 void *cur_data = host_data;
5168 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5169 int spec_size = thunk_type_size(arg_type, 0);
5170 int i;
5171
5172 for (i = 0; i < host_dm->target_count; i++) {
5173 struct dm_target_spec *spec = cur_data;
5174 uint32_t next;
5175 int slen;
5176
5177 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
5178 slen = strlen((char*)gspec + spec_size) + 1;
5179 next = spec->next;
5180 spec->next = sizeof(*spec) + slen;
5181 strcpy((char*)&spec[1], gspec + spec_size);
5182 gspec += next;
5183 cur_data += spec->next;
5184 }
5185 break;
5186 }
5187 default:
5188 ret = -TARGET_EINVAL;
5189 unlock_user(argptr, guest_data, 0);
5190 goto out;
5191 }
5192 unlock_user(argptr, guest_data, 0);
5193
5194 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5195 if (!is_error(ret)) {
5196 guest_data = arg + host_dm->data_start;
5197 guest_data_size = host_dm->data_size - host_dm->data_start;
5198 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5199 switch (ie->host_cmd) {
5200 case DM_REMOVE_ALL:
5201 case DM_DEV_CREATE:
5202 case DM_DEV_REMOVE:
5203 case DM_DEV_RENAME:
5204 case DM_DEV_SUSPEND:
5205 case DM_DEV_STATUS:
5206 case DM_TABLE_LOAD:
5207 case DM_TABLE_CLEAR:
5208 case DM_TARGET_MSG:
5209 case DM_DEV_SET_GEOMETRY:
5210 /* no return data */
5211 break;
5212 case DM_LIST_DEVICES:
5213 {
5214 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5215 uint32_t remaining_data = guest_data_size;
5216 void *cur_data = argptr;
5217 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5218 int nl_size = 12; /* can't use thunk_size due to alignment */
5219
5220 while (1) {
5221 uint32_t next = nl->next;
5222 if (next) {
5223 nl->next = nl_size + (strlen(nl->name) + 1);
5224 }
5225 if (remaining_data < nl->next) {
5226 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5227 break;
5228 }
5229 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
5230 strcpy(cur_data + nl_size, nl->name);
5231 cur_data += nl->next;
5232 remaining_data -= nl->next;
5233 if (!next) {
5234 break;
5235 }
5236 nl = (void*)nl + next;
5237 }
5238 break;
5239 }
5240 case DM_DEV_WAIT:
5241 case DM_TABLE_STATUS:
5242 {
5243 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5244 void *cur_data = argptr;
5245 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5246 int spec_size = thunk_type_size(arg_type, 0);
5247 int i;
5248
5249 for (i = 0; i < host_dm->target_count; i++) {
5250 uint32_t next = spec->next;
5251 int slen = strlen((char*)&spec[1]) + 1;
5252 spec->next = (cur_data - argptr) + spec_size + slen;
5253 if (guest_data_size < spec->next) {
5254 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5255 break;
5256 }
5257 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5258 strcpy(cur_data + spec_size, (char*)&spec[1]);
5259 cur_data = argptr + spec->next;
5260 spec = (void*)host_dm + host_dm->data_start + next;
5261 }
5262 break;
5263 }
5264 case DM_TABLE_DEPS:
5265 {
5266 void *hdata = (void*)host_dm + host_dm->data_start;
5267 int count = *(uint32_t*)hdata;
5268 uint64_t *hdev = hdata + 8;
5269 uint64_t *gdev = argptr + 8;
5270 int i;
5271
5272 *(uint32_t*)argptr = tswap32(count);
5273 for (i = 0; i < count; i++) {
5274 *gdev = tswap64(*hdev);
5275 gdev++;
5276 hdev++;
5277 }
5278 break;
5279 }
5280 case DM_LIST_VERSIONS:
5281 {
5282 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5283 uint32_t remaining_data = guest_data_size;
5284 void *cur_data = argptr;
5285 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5286 int vers_size = thunk_type_size(arg_type, 0);
5287
5288 while (1) {
5289 uint32_t next = vers->next;
5290 if (next) {
5291 vers->next = vers_size + (strlen(vers->name) + 1);
5292 }
5293 if (remaining_data < vers->next) {
5294 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5295 break;
5296 }
5297 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5298 strcpy(cur_data + vers_size, vers->name);
5299 cur_data += vers->next;
5300 remaining_data -= vers->next;
5301 if (!next) {
5302 break;
5303 }
5304 vers = (void*)vers + next;
5305 }
5306 break;
5307 }
5308 default:
5309 unlock_user(argptr, guest_data, 0);
5310 ret = -TARGET_EINVAL;
5311 goto out;
5312 }
5313 unlock_user(argptr, guest_data, guest_data_size);
5314
5315 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5316 if (!argptr) {
5317 ret = -TARGET_EFAULT;
5318 goto out;
5319 }
5320 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5321 unlock_user(argptr, arg, target_size);
5322 }
5323 out:
5324 g_free(big_buf);
5325 return ret;
5326 }
5327
5328 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5329 int cmd, abi_long arg)
5330 {
5331 void *argptr;
5332 int target_size;
5333 const argtype *arg_type = ie->arg_type;
5334 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5335 abi_long ret;
5336
5337 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5338 struct blkpg_partition host_part;
5339
5340 /* Read and convert blkpg */
5341 arg_type++;
5342 target_size = thunk_type_size(arg_type, 0);
5343 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5344 if (!argptr) {
5345 ret = -TARGET_EFAULT;
5346 goto out;
5347 }
5348 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5349 unlock_user(argptr, arg, 0);
5350
5351 switch (host_blkpg->op) {
5352 case BLKPG_ADD_PARTITION:
5353 case BLKPG_DEL_PARTITION:
5354 /* payload is struct blkpg_partition */
5355 break;
5356 default:
5357 /* Unknown opcode */
5358 ret = -TARGET_EINVAL;
5359 goto out;
5360 }
5361
5362 /* Read and convert blkpg->data */
5363 arg = (abi_long)(uintptr_t)host_blkpg->data;
5364 target_size = thunk_type_size(part_arg_type, 0);
5365 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5366 if (!argptr) {
5367 ret = -TARGET_EFAULT;
5368 goto out;
5369 }
5370 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5371 unlock_user(argptr, arg, 0);
5372
5373 /* Swizzle the data pointer to our local copy and call! */
5374 host_blkpg->data = &host_part;
5375 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5376
5377 out:
5378 return ret;
5379 }
5380
5381 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5382 int fd, int cmd, abi_long arg)
5383 {
5384 const argtype *arg_type = ie->arg_type;
5385 const StructEntry *se;
5386 const argtype *field_types;
5387 const int *dst_offsets, *src_offsets;
5388 int target_size;
5389 void *argptr;
5390 abi_ulong *target_rt_dev_ptr;
5391 unsigned long *host_rt_dev_ptr;
5392 abi_long ret;
5393 int i;
5394
5395 assert(ie->access == IOC_W);
5396 assert(*arg_type == TYPE_PTR);
5397 arg_type++;
5398 assert(*arg_type == TYPE_STRUCT);
5399 target_size = thunk_type_size(arg_type, 0);
5400 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5401 if (!argptr) {
5402 return -TARGET_EFAULT;
5403 }
5404 arg_type++;
5405 assert(*arg_type == (int)STRUCT_rtentry);
5406 se = struct_entries + *arg_type++;
5407 assert(se->convert[0] == NULL);
5408 /* convert struct here to be able to catch rt_dev string */
5409 field_types = se->field_types;
5410 dst_offsets = se->field_offsets[THUNK_HOST];
5411 src_offsets = se->field_offsets[THUNK_TARGET];
5412 for (i = 0; i < se->nb_fields; i++) {
5413 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5414 assert(*field_types == TYPE_PTRVOID);
5415 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
5416 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5417 if (*target_rt_dev_ptr != 0) {
5418 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5419 tswapal(*target_rt_dev_ptr));
5420 if (!*host_rt_dev_ptr) {
5421 unlock_user(argptr, arg, 0);
5422 return -TARGET_EFAULT;
5423 }
5424 } else {
5425 *host_rt_dev_ptr = 0;
5426 }
5427 field_types++;
5428 continue;
5429 }
5430 field_types = thunk_convert(buf_temp + dst_offsets[i],
5431 argptr + src_offsets[i],
5432 field_types, THUNK_HOST);
5433 }
5434 unlock_user(argptr, arg, 0);
5435
5436 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5437 if (*host_rt_dev_ptr != 0) {
5438 unlock_user((void *)*host_rt_dev_ptr,
5439 *target_rt_dev_ptr, 0);
5440 }
5441 return ret;
5442 }
5443
5444 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5445 int fd, int cmd, abi_long arg)
5446 {
5447 int sig = target_to_host_signal(arg);
5448 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5449 }
5450
5451 static IOCTLEntry ioctl_entries[] = {
5452 #define IOCTL(cmd, access, ...) \
5453 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5454 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5455 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5456 #include "ioctls.h"
5457 { 0, 0, },
5458 };
5459
5460 /* ??? Implement proper locking for ioctls. */
5461 /* do_ioctl() Must return target values and target errnos. */
5462 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5463 {
5464 const IOCTLEntry *ie;
5465 const argtype *arg_type;
5466 abi_long ret;
5467 uint8_t buf_temp[MAX_STRUCT_SIZE];
5468 int target_size;
5469 void *argptr;
5470
5471 ie = ioctl_entries;
5472 for(;;) {
5473 if (ie->target_cmd == 0) {
5474 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5475 return -TARGET_ENOSYS;
5476 }
5477 if (ie->target_cmd == cmd)
5478 break;
5479 ie++;
5480 }
5481 arg_type = ie->arg_type;
5482 #if defined(DEBUG)
5483 gemu_log("ioctl: cmd=0x%04lx (%s)\n", (long)cmd, ie->name);
5484 #endif
5485 if (ie->do_ioctl) {
5486 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5487 }
5488
5489 switch(arg_type[0]) {
5490 case TYPE_NULL:
5491 /* no argument */
5492 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5493 break;
5494 case TYPE_PTRVOID:
5495 case TYPE_INT:
5496 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5497 break;
5498 case TYPE_PTR:
5499 arg_type++;
5500 target_size = thunk_type_size(arg_type, 0);
5501 switch(ie->access) {
5502 case IOC_R:
5503 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5504 if (!is_error(ret)) {
5505 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5506 if (!argptr)
5507 return -TARGET_EFAULT;
5508 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5509 unlock_user(argptr, arg, target_size);
5510 }
5511 break;
5512 case IOC_W:
5513 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5514 if (!argptr)
5515 return -TARGET_EFAULT;
5516 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5517 unlock_user(argptr, arg, 0);
5518 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5519 break;
5520 default:
5521 case IOC_RW:
5522 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5523 if (!argptr)
5524 return -TARGET_EFAULT;
5525 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5526 unlock_user(argptr, arg, 0);
5527 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5528 if (!is_error(ret)) {
5529 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5530 if (!argptr)
5531 return -TARGET_EFAULT;
5532 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5533 unlock_user(argptr, arg, target_size);
5534 }
5535 break;
5536 }
5537 break;
5538 default:
5539 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5540 (long)cmd, arg_type[0]);
5541 ret = -TARGET_ENOSYS;
5542 break;
5543 }
5544 return ret;
5545 }
5546
5547 static const bitmask_transtbl iflag_tbl[] = {
5548 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5549 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5550 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5551 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5552 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5553 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5554 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5555 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5556 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5557 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5558 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5559 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5560 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5561 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5562 { 0, 0, 0, 0 }
5563 };
5564
5565 static const bitmask_transtbl oflag_tbl[] = {
5566 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5567 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5568 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5569 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5570 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5571 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5572 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5573 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5574 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5575 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5576 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5577 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5578 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5579 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5580 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5581 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5582 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5583 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5584 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5585 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5586 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5587 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5588 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5589 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5590 { 0, 0, 0, 0 }
5591 };
5592
5593 static const bitmask_transtbl cflag_tbl[] = {
5594 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5595 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5596 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5597 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5598 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5599 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5600 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5601 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5602 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5603 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5604 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5605 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5606 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5607 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5608 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5609 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5610 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5611 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5612 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5613 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5614 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5615 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5616 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5617 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5618 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5619 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5620 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5621 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5622 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5623 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5624 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5625 { 0, 0, 0, 0 }
5626 };
5627
5628 static const bitmask_transtbl lflag_tbl[] = {
5629 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5630 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5631 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5632 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5633 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5634 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5635 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5636 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5637 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5638 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5639 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5640 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5641 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5642 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5643 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5644 { 0, 0, 0, 0 }
5645 };
5646
5647 static void target_to_host_termios (void *dst, const void *src)
5648 {
5649 struct host_termios *host = dst;
5650 const struct target_termios *target = src;
5651
5652 host->c_iflag =
5653 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5654 host->c_oflag =
5655 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5656 host->c_cflag =
5657 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5658 host->c_lflag =
5659 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5660 host->c_line = target->c_line;
5661
5662 memset(host->c_cc, 0, sizeof(host->c_cc));
5663 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5664 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5665 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5666 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5667 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5668 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5669 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5670 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5671 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5672 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5673 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5674 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5675 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5676 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5677 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5678 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5679 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5680 }
5681
5682 static void host_to_target_termios (void *dst, const void *src)
5683 {
5684 struct target_termios *target = dst;
5685 const struct host_termios *host = src;
5686
5687 target->c_iflag =
5688 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5689 target->c_oflag =
5690 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5691 target->c_cflag =
5692 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5693 target->c_lflag =
5694 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5695 target->c_line = host->c_line;
5696
5697 memset(target->c_cc, 0, sizeof(target->c_cc));
5698 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5699 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5700 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5701 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5702 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5703 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5704 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5705 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5706 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5707 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5708 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5709 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5710 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5711 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5712 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5713 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5714 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5715 }
5716
5717 static const StructEntry struct_termios_def = {
5718 .convert = { host_to_target_termios, target_to_host_termios },
5719 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5720 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5721 };
5722
5723 static bitmask_transtbl mmap_flags_tbl[] = {
5724 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5725 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5726 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5727 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
5728 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
5729 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
5730 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
5731 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5732 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, MAP_NORESERVE,
5733 MAP_NORESERVE },
5734 { 0, 0, 0, 0 }
5735 };
5736
5737 #if defined(TARGET_I386)
5738
5739 /* NOTE: there is really one LDT for all the threads */
5740 static uint8_t *ldt_table;
5741
5742 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5743 {
5744 int size;
5745 void *p;
5746
5747 if (!ldt_table)
5748 return 0;
5749 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5750 if (size > bytecount)
5751 size = bytecount;
5752 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5753 if (!p)
5754 return -TARGET_EFAULT;
5755 /* ??? Should this by byteswapped? */
5756 memcpy(p, ldt_table, size);
5757 unlock_user(p, ptr, size);
5758 return size;
5759 }
5760
5761 /* XXX: add locking support */
5762 static abi_long write_ldt(CPUX86State *env,
5763 abi_ulong ptr, unsigned long bytecount, int oldmode)
5764 {
5765 struct target_modify_ldt_ldt_s ldt_info;
5766 struct target_modify_ldt_ldt_s *target_ldt_info;
5767 int seg_32bit, contents, read_exec_only, limit_in_pages;
5768 int seg_not_present, useable, lm;
5769 uint32_t *lp, entry_1, entry_2;
5770
5771 if (bytecount != sizeof(ldt_info))
5772 return -TARGET_EINVAL;
5773 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5774 return -TARGET_EFAULT;
5775 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5776 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5777 ldt_info.limit = tswap32(target_ldt_info->limit);
5778 ldt_info.flags = tswap32(target_ldt_info->flags);
5779 unlock_user_struct(target_ldt_info, ptr, 0);
5780
5781 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5782 return -TARGET_EINVAL;
5783 seg_32bit = ldt_info.flags & 1;
5784 contents = (ldt_info.flags >> 1) & 3;
5785 read_exec_only = (ldt_info.flags >> 3) & 1;
5786 limit_in_pages = (ldt_info.flags >> 4) & 1;
5787 seg_not_present = (ldt_info.flags >> 5) & 1;
5788 useable = (ldt_info.flags >> 6) & 1;
5789 #ifdef TARGET_ABI32
5790 lm = 0;
5791 #else
5792 lm = (ldt_info.flags >> 7) & 1;
5793 #endif
5794 if (contents == 3) {
5795 if (oldmode)
5796 return -TARGET_EINVAL;
5797 if (seg_not_present == 0)
5798 return -TARGET_EINVAL;
5799 }
5800 /* allocate the LDT */
5801 if (!ldt_table) {
5802 env->ldt.base = target_mmap(0,
5803 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
5804 PROT_READ|PROT_WRITE,
5805 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
5806 if (env->ldt.base == -1)
5807 return -TARGET_ENOMEM;
5808 memset(g2h(env->ldt.base), 0,
5809 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
5810 env->ldt.limit = 0xffff;
5811 ldt_table = g2h(env->ldt.base);
5812 }
5813
5814 /* NOTE: same code as Linux kernel */
5815 /* Allow LDTs to be cleared by the user. */
5816 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5817 if (oldmode ||
5818 (contents == 0 &&
5819 read_exec_only == 1 &&
5820 seg_32bit == 0 &&
5821 limit_in_pages == 0 &&
5822 seg_not_present == 1 &&
5823 useable == 0 )) {
5824 entry_1 = 0;
5825 entry_2 = 0;
5826 goto install;
5827 }
5828 }
5829
5830 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5831 (ldt_info.limit & 0x0ffff);
5832 entry_2 = (ldt_info.base_addr & 0xff000000) |
5833 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5834 (ldt_info.limit & 0xf0000) |
5835 ((read_exec_only ^ 1) << 9) |
5836 (contents << 10) |
5837 ((seg_not_present ^ 1) << 15) |
5838 (seg_32bit << 22) |
5839 (limit_in_pages << 23) |
5840 (lm << 21) |
5841 0x7000;
5842 if (!oldmode)
5843 entry_2 |= (useable << 20);
5844
5845 /* Install the new entry ... */
5846 install:
5847 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
5848 lp[0] = tswap32(entry_1);
5849 lp[1] = tswap32(entry_2);
5850 return 0;
5851 }
5852
5853 /* specific and weird i386 syscalls */
5854 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
5855 unsigned long bytecount)
5856 {
5857 abi_long ret;
5858
5859 switch (func) {
5860 case 0:
5861 ret = read_ldt(ptr, bytecount);
5862 break;
5863 case 1:
5864 ret = write_ldt(env, ptr, bytecount, 1);
5865 break;
5866 case 0x11:
5867 ret = write_ldt(env, ptr, bytecount, 0);
5868 break;
5869 default:
5870 ret = -TARGET_ENOSYS;
5871 break;
5872 }
5873 return ret;
5874 }
5875
5876 #if defined(TARGET_I386) && defined(TARGET_ABI32)
5877 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
5878 {
5879 uint64_t *gdt_table = g2h(env->gdt.base);
5880 struct target_modify_ldt_ldt_s ldt_info;
5881 struct target_modify_ldt_ldt_s *target_ldt_info;
5882 int seg_32bit, contents, read_exec_only, limit_in_pages;
5883 int seg_not_present, useable, lm;
5884 uint32_t *lp, entry_1, entry_2;
5885 int i;
5886
5887 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5888 if (!target_ldt_info)
5889 return -TARGET_EFAULT;
5890 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5891 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5892 ldt_info.limit = tswap32(target_ldt_info->limit);
5893 ldt_info.flags = tswap32(target_ldt_info->flags);
5894 if (ldt_info.entry_number == -1) {
5895 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
5896 if (gdt_table[i] == 0) {
5897 ldt_info.entry_number = i;
5898 target_ldt_info->entry_number = tswap32(i);
5899 break;
5900 }
5901 }
5902 }
5903 unlock_user_struct(target_ldt_info, ptr, 1);
5904
5905 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
5906 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
5907 return -TARGET_EINVAL;
5908 seg_32bit = ldt_info.flags & 1;
5909 contents = (ldt_info.flags >> 1) & 3;
5910 read_exec_only = (ldt_info.flags >> 3) & 1;
5911 limit_in_pages = (ldt_info.flags >> 4) & 1;
5912 seg_not_present = (ldt_info.flags >> 5) & 1;
5913 useable = (ldt_info.flags >> 6) & 1;
5914 #ifdef TARGET_ABI32
5915 lm = 0;
5916 #else
5917 lm = (ldt_info.flags >> 7) & 1;
5918 #endif
5919
5920 if (contents == 3) {
5921 if (seg_not_present == 0)
5922 return -TARGET_EINVAL;
5923 }
5924
5925 /* NOTE: same code as Linux kernel */
5926 /* Allow LDTs to be cleared by the user. */
5927 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5928 if ((contents == 0 &&
5929 read_exec_only == 1 &&
5930 seg_32bit == 0 &&
5931 limit_in_pages == 0 &&
5932 seg_not_present == 1 &&
5933 useable == 0 )) {
5934 entry_1 = 0;
5935 entry_2 = 0;
5936 goto install;
5937 }
5938 }
5939
5940 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5941 (ldt_info.limit & 0x0ffff);
5942 entry_2 = (ldt_info.base_addr & 0xff000000) |
5943 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5944 (ldt_info.limit & 0xf0000) |
5945 ((read_exec_only ^ 1) << 9) |
5946 (contents << 10) |
5947 ((seg_not_present ^ 1) << 15) |
5948 (seg_32bit << 22) |
5949 (limit_in_pages << 23) |
5950 (useable << 20) |
5951 (lm << 21) |
5952 0x7000;
5953
5954 /* Install the new entry ... */
5955 install:
5956 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
5957 lp[0] = tswap32(entry_1);
5958 lp[1] = tswap32(entry_2);
5959 return 0;
5960 }
5961
5962 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
5963 {
5964 struct target_modify_ldt_ldt_s *target_ldt_info;
5965 uint64_t *gdt_table = g2h(env->gdt.base);
5966 uint32_t base_addr, limit, flags;
5967 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
5968 int seg_not_present, useable, lm;
5969 uint32_t *lp, entry_1, entry_2;
5970
5971 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5972 if (!target_ldt_info)
5973 return -TARGET_EFAULT;
5974 idx = tswap32(target_ldt_info->entry_number);
5975 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
5976 idx > TARGET_GDT_ENTRY_TLS_MAX) {
5977 unlock_user_struct(target_ldt_info, ptr, 1);
5978 return -TARGET_EINVAL;
5979 }
5980 lp = (uint32_t *)(gdt_table + idx);
5981 entry_1 = tswap32(lp[0]);
5982 entry_2 = tswap32(lp[1]);
5983
5984 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
5985 contents = (entry_2 >> 10) & 3;
5986 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
5987 seg_32bit = (entry_2 >> 22) & 1;
5988 limit_in_pages = (entry_2 >> 23) & 1;
5989 useable = (entry_2 >> 20) & 1;
5990 #ifdef TARGET_ABI32
5991 lm = 0;
5992 #else
5993 lm = (entry_2 >> 21) & 1;
5994 #endif
5995 flags = (seg_32bit << 0) | (contents << 1) |
5996 (read_exec_only << 3) | (limit_in_pages << 4) |
5997 (seg_not_present << 5) | (useable << 6) | (lm << 7);
5998 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
5999 base_addr = (entry_1 >> 16) |
6000 (entry_2 & 0xff000000) |
6001 ((entry_2 & 0xff) << 16);
6002 target_ldt_info->base_addr = tswapal(base_addr);
6003 target_ldt_info->limit = tswap32(limit);
6004 target_ldt_info->flags = tswap32(flags);
6005 unlock_user_struct(target_ldt_info, ptr, 1);
6006 return 0;
6007 }
6008 #endif /* TARGET_I386 && TARGET_ABI32 */
6009
6010 #ifndef TARGET_ABI32
6011 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6012 {
6013 abi_long ret = 0;
6014 abi_ulong val;
6015 int idx;
6016
6017 switch(code) {
6018 case TARGET_ARCH_SET_GS:
6019 case TARGET_ARCH_SET_FS:
6020 if (code == TARGET_ARCH_SET_GS)
6021 idx = R_GS;
6022 else
6023 idx = R_FS;
6024 cpu_x86_load_seg(env, idx, 0);
6025 env->segs[idx].base = addr;
6026 break;
6027 case TARGET_ARCH_GET_GS:
6028 case TARGET_ARCH_GET_FS:
6029 if (code == TARGET_ARCH_GET_GS)
6030 idx = R_GS;
6031 else
6032 idx = R_FS;
6033 val = env->segs[idx].base;
6034 if (put_user(val, addr, abi_ulong))
6035 ret = -TARGET_EFAULT;
6036 break;
6037 default:
6038 ret = -TARGET_EINVAL;
6039 break;
6040 }
6041 return ret;
6042 }
6043 #endif
6044
6045 #endif /* defined(TARGET_I386) */
6046
6047 #define NEW_STACK_SIZE 0x40000
6048
6049
6050 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6051 typedef struct {
6052 CPUArchState *env;
6053 pthread_mutex_t mutex;
6054 pthread_cond_t cond;
6055 pthread_t thread;
6056 uint32_t tid;
6057 abi_ulong child_tidptr;
6058 abi_ulong parent_tidptr;
6059 sigset_t sigmask;
6060 } new_thread_info;
6061
6062 static void *clone_func(void *arg)
6063 {
6064 new_thread_info *info = arg;
6065 CPUArchState *env;
6066 CPUState *cpu;
6067 TaskState *ts;
6068
6069 rcu_register_thread();
6070 env = info->env;
6071 cpu = ENV_GET_CPU(env);
6072 thread_cpu = cpu;
6073 ts = (TaskState *)cpu->opaque;
6074 info->tid = gettid();
6075 cpu->host_tid = info->tid;
6076 task_settid(ts);
6077 if (info->child_tidptr)
6078 put_user_u32(info->tid, info->child_tidptr);
6079 if (info->parent_tidptr)
6080 put_user_u32(info->tid, info->parent_tidptr);
6081 /* Enable signals. */
6082 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6083 /* Signal to the parent that we're ready. */
6084 pthread_mutex_lock(&info->mutex);
6085 pthread_cond_broadcast(&info->cond);
6086 pthread_mutex_unlock(&info->mutex);
6087 /* Wait until the parent has finshed initializing the tls state. */
6088 pthread_mutex_lock(&clone_lock);
6089 pthread_mutex_unlock(&clone_lock);
6090 cpu_loop(env);
6091 /* never exits */
6092 return NULL;
6093 }
6094
6095 /* do_fork() Must return host values and target errnos (unlike most
6096 do_*() functions). */
6097 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6098 abi_ulong parent_tidptr, target_ulong newtls,
6099 abi_ulong child_tidptr)
6100 {
6101 CPUState *cpu = ENV_GET_CPU(env);
6102 int ret;
6103 TaskState *ts;
6104 CPUState *new_cpu;
6105 CPUArchState *new_env;
6106 sigset_t sigmask;
6107
6108 flags &= ~CLONE_IGNORED_FLAGS;
6109
6110 /* Emulate vfork() with fork() */
6111 if (flags & CLONE_VFORK)
6112 flags &= ~(CLONE_VFORK | CLONE_VM);
6113
6114 if (flags & CLONE_VM) {
6115 TaskState *parent_ts = (TaskState *)cpu->opaque;
6116 new_thread_info info;
6117 pthread_attr_t attr;
6118
6119 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6120 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6121 return -TARGET_EINVAL;
6122 }
6123
6124 ts = g_new0(TaskState, 1);
6125 init_task_state(ts);
6126 /* we create a new CPU instance. */
6127 new_env = cpu_copy(env);
6128 /* Init regs that differ from the parent. */
6129 cpu_clone_regs(new_env, newsp);
6130 new_cpu = ENV_GET_CPU(new_env);
6131 new_cpu->opaque = ts;
6132 ts->bprm = parent_ts->bprm;
6133 ts->info = parent_ts->info;
6134 ts->signal_mask = parent_ts->signal_mask;
6135
6136 if (flags & CLONE_CHILD_CLEARTID) {
6137 ts->child_tidptr = child_tidptr;
6138 }
6139
6140 if (flags & CLONE_SETTLS) {
6141 cpu_set_tls (new_env, newtls);
6142 }
6143
6144 /* Grab a mutex so that thread setup appears atomic. */
6145 pthread_mutex_lock(&clone_lock);
6146
6147 memset(&info, 0, sizeof(info));
6148 pthread_mutex_init(&info.mutex, NULL);
6149 pthread_mutex_lock(&info.mutex);
6150 pthread_cond_init(&info.cond, NULL);
6151 info.env = new_env;
6152 if (flags & CLONE_CHILD_SETTID) {
6153 info.child_tidptr = child_tidptr;
6154 }
6155 if (flags & CLONE_PARENT_SETTID) {
6156 info.parent_tidptr = parent_tidptr;
6157 }
6158
6159 ret = pthread_attr_init(&attr);
6160 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6161 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6162 /* It is not safe to deliver signals until the child has finished
6163 initializing, so temporarily block all signals. */
6164 sigfillset(&sigmask);
6165 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6166
6167 /* If this is our first additional thread, we need to ensure we
6168 * generate code for parallel execution and flush old translations.
6169 */
6170 if (!parallel_cpus) {
6171 parallel_cpus = true;
6172 tb_flush(cpu);
6173 }
6174
6175 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6176 /* TODO: Free new CPU state if thread creation failed. */
6177
6178 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6179 pthread_attr_destroy(&attr);
6180 if (ret == 0) {
6181 /* Wait for the child to initialize. */
6182 pthread_cond_wait(&info.cond, &info.mutex);
6183 ret = info.tid;
6184 } else {
6185 ret = -1;
6186 }
6187 pthread_mutex_unlock(&info.mutex);
6188 pthread_cond_destroy(&info.cond);
6189 pthread_mutex_destroy(&info.mutex);
6190 pthread_mutex_unlock(&clone_lock);
6191 } else {
6192 /* if no CLONE_VM, we consider it is a fork */
6193 if (flags & CLONE_INVALID_FORK_FLAGS) {
6194 return -TARGET_EINVAL;
6195 }
6196
6197 /* We can't support custom termination signals */
6198 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6199 return -TARGET_EINVAL;
6200 }
6201
6202 if (block_signals()) {
6203 return -TARGET_ERESTARTSYS;
6204 }
6205
6206 fork_start();
6207 ret = fork();
6208 if (ret == 0) {
6209 /* Child Process. */
6210 rcu_after_fork();
6211 cpu_clone_regs(env, newsp);
6212 fork_end(1);
6213 /* There is a race condition here. The parent process could
6214 theoretically read the TID in the child process before the child
6215 tid is set. This would require using either ptrace
6216 (not implemented) or having *_tidptr to point at a shared memory
6217 mapping. We can't repeat the spinlock hack used above because
6218 the child process gets its own copy of the lock. */
6219 if (flags & CLONE_CHILD_SETTID)
6220 put_user_u32(gettid(), child_tidptr);
6221 if (flags & CLONE_PARENT_SETTID)
6222 put_user_u32(gettid(), parent_tidptr);
6223 ts = (TaskState *)cpu->opaque;
6224 if (flags & CLONE_SETTLS)
6225 cpu_set_tls (env, newtls);
6226 if (flags & CLONE_CHILD_CLEARTID)
6227 ts->child_tidptr = child_tidptr;
6228 } else {
6229 fork_end(0);
6230 }
6231 }
6232 return ret;
6233 }
6234
6235 /* warning : doesn't handle linux specific flags... */
6236 static int target_to_host_fcntl_cmd(int cmd)
6237 {
6238 switch(cmd) {
6239 case TARGET_F_DUPFD:
6240 case TARGET_F_GETFD:
6241 case TARGET_F_SETFD:
6242 case TARGET_F_GETFL:
6243 case TARGET_F_SETFL:
6244 return cmd;
6245 case TARGET_F_GETLK:
6246 return F_GETLK64;
6247 case TARGET_F_SETLK:
6248 return F_SETLK64;
6249 case TARGET_F_SETLKW:
6250 return F_SETLKW64;
6251 case TARGET_F_GETOWN:
6252 return F_GETOWN;
6253 case TARGET_F_SETOWN:
6254 return F_SETOWN;
6255 case TARGET_F_GETSIG:
6256 return F_GETSIG;
6257 case TARGET_F_SETSIG:
6258 return F_SETSIG;
6259 #if TARGET_ABI_BITS == 32
6260 case TARGET_F_GETLK64:
6261 return F_GETLK64;
6262 case TARGET_F_SETLK64:
6263 return F_SETLK64;
6264 case TARGET_F_SETLKW64:
6265 return F_SETLKW64;
6266 #endif
6267 case TARGET_F_SETLEASE:
6268 return F_SETLEASE;
6269 case TARGET_F_GETLEASE:
6270 return F_GETLEASE;
6271 #ifdef F_DUPFD_CLOEXEC
6272 case TARGET_F_DUPFD_CLOEXEC:
6273 return F_DUPFD_CLOEXEC;
6274 #endif
6275 case TARGET_F_NOTIFY:
6276 return F_NOTIFY;
6277 #ifdef F_GETOWN_EX
6278 case TARGET_F_GETOWN_EX:
6279 return F_GETOWN_EX;
6280 #endif
6281 #ifdef F_SETOWN_EX
6282 case TARGET_F_SETOWN_EX:
6283 return F_SETOWN_EX;
6284 #endif
6285 #ifdef F_SETPIPE_SZ
6286 case TARGET_F_SETPIPE_SZ:
6287 return F_SETPIPE_SZ;
6288 case TARGET_F_GETPIPE_SZ:
6289 return F_GETPIPE_SZ;
6290 #endif
6291 default:
6292 return -TARGET_EINVAL;
6293 }
6294 return -TARGET_EINVAL;
6295 }
6296
6297 #define TRANSTBL_CONVERT(a) { -1, TARGET_##a, -1, a }
6298 static const bitmask_transtbl flock_tbl[] = {
6299 TRANSTBL_CONVERT(F_RDLCK),
6300 TRANSTBL_CONVERT(F_WRLCK),
6301 TRANSTBL_CONVERT(F_UNLCK),
6302 TRANSTBL_CONVERT(F_EXLCK),
6303 TRANSTBL_CONVERT(F_SHLCK),
6304 { 0, 0, 0, 0 }
6305 };
6306
6307 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6308 abi_ulong target_flock_addr)
6309 {
6310 struct target_flock *target_fl;
6311 short l_type;
6312
6313 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6314 return -TARGET_EFAULT;
6315 }
6316
6317 __get_user(l_type, &target_fl->l_type);
6318 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6319 __get_user(fl->l_whence, &target_fl->l_whence);
6320 __get_user(fl->l_start, &target_fl->l_start);
6321 __get_user(fl->l_len, &target_fl->l_len);
6322 __get_user(fl->l_pid, &target_fl->l_pid);
6323 unlock_user_struct(target_fl, target_flock_addr, 0);
6324 return 0;
6325 }
6326
6327 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6328 const struct flock64 *fl)
6329 {
6330 struct target_flock *target_fl;
6331 short l_type;
6332
6333 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6334 return -TARGET_EFAULT;
6335 }
6336
6337 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6338 __put_user(l_type, &target_fl->l_type);
6339 __put_user(fl->l_whence, &target_fl->l_whence);
6340 __put_user(fl->l_start, &target_fl->l_start);
6341 __put_user(fl->l_len, &target_fl->l_len);
6342 __put_user(fl->l_pid, &target_fl->l_pid);
6343 unlock_user_struct(target_fl, target_flock_addr, 1);
6344 return 0;
6345 }
6346
6347 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6348 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6349
6350 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6351 static inline abi_long copy_from_user_eabi_flock64(struct flock64 *fl,
6352 abi_ulong target_flock_addr)
6353 {
6354 struct target_eabi_flock64 *target_fl;
6355 short l_type;
6356
6357 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6358 return -TARGET_EFAULT;
6359 }
6360
6361 __get_user(l_type, &target_fl->l_type);
6362 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6363 __get_user(fl->l_whence, &target_fl->l_whence);
6364 __get_user(fl->l_start, &target_fl->l_start);
6365 __get_user(fl->l_len, &target_fl->l_len);
6366 __get_user(fl->l_pid, &target_fl->l_pid);
6367 unlock_user_struct(target_fl, target_flock_addr, 0);
6368 return 0;
6369 }
6370
6371 static inline abi_long copy_to_user_eabi_flock64(abi_ulong target_flock_addr,
6372 const struct flock64 *fl)
6373 {
6374 struct target_eabi_flock64 *target_fl;
6375 short l_type;
6376
6377 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6378 return -TARGET_EFAULT;
6379 }
6380
6381 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6382 __put_user(l_type, &target_fl->l_type);
6383 __put_user(fl->l_whence, &target_fl->l_whence);
6384 __put_user(fl->l_start, &target_fl->l_start);
6385 __put_user(fl->l_len, &target_fl->l_len);
6386 __put_user(fl->l_pid, &target_fl->l_pid);
6387 unlock_user_struct(target_fl, target_flock_addr, 1);
6388 return 0;
6389 }
6390 #endif
6391
6392 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6393 abi_ulong target_flock_addr)
6394 {
6395 struct target_flock64 *target_fl;
6396 short l_type;
6397
6398 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6399 return -TARGET_EFAULT;
6400 }
6401
6402 __get_user(l_type, &target_fl->l_type);
6403 fl->l_type = target_to_host_bitmask(l_type, flock_tbl);
6404 __get_user(fl->l_whence, &target_fl->l_whence);
6405 __get_user(fl->l_start, &target_fl->l_start);
6406 __get_user(fl->l_len, &target_fl->l_len);
6407 __get_user(fl->l_pid, &target_fl->l_pid);
6408 unlock_user_struct(target_fl, target_flock_addr, 0);
6409 return 0;
6410 }
6411
6412 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6413 const struct flock64 *fl)
6414 {
6415 struct target_flock64 *target_fl;
6416 short l_type;
6417
6418 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6419 return -TARGET_EFAULT;
6420 }
6421
6422 l_type = host_to_target_bitmask(fl->l_type, flock_tbl);
6423 __put_user(l_type, &target_fl->l_type);
6424 __put_user(fl->l_whence, &target_fl->l_whence);
6425 __put_user(fl->l_start, &target_fl->l_start);
6426 __put_user(fl->l_len, &target_fl->l_len);
6427 __put_user(fl->l_pid, &target_fl->l_pid);
6428 unlock_user_struct(target_fl, target_flock_addr, 1);
6429 return 0;
6430 }
6431
6432 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6433 {
6434 struct flock64 fl64;
6435 #ifdef F_GETOWN_EX
6436 struct f_owner_ex fox;
6437 struct target_f_owner_ex *target_fox;
6438 #endif
6439 abi_long ret;
6440 int host_cmd = target_to_host_fcntl_cmd(cmd);
6441
6442 if (host_cmd == -TARGET_EINVAL)
6443 return host_cmd;
6444
6445 switch(cmd) {
6446 case TARGET_F_GETLK:
6447 ret = copy_from_user_flock(&fl64, arg);
6448 if (ret) {
6449 return ret;
6450 }
6451 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6452 if (ret == 0) {
6453 ret = copy_to_user_flock(arg, &fl64);
6454 }
6455 break;
6456
6457 case TARGET_F_SETLK:
6458 case TARGET_F_SETLKW:
6459 ret = copy_from_user_flock(&fl64, arg);
6460 if (ret) {
6461 return ret;
6462 }
6463 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6464 break;
6465
6466 case TARGET_F_GETLK64:
6467 ret = copy_from_user_flock64(&fl64, arg);
6468 if (ret) {
6469 return ret;
6470 }
6471 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6472 if (ret == 0) {
6473 ret = copy_to_user_flock64(arg, &fl64);
6474 }
6475 break;
6476 case TARGET_F_SETLK64:
6477 case TARGET_F_SETLKW64:
6478 ret = copy_from_user_flock64(&fl64, arg);
6479 if (ret) {
6480 return ret;
6481 }
6482 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6483 break;
6484
6485 case TARGET_F_GETFL:
6486 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6487 if (ret >= 0) {
6488 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
6489 }
6490 break;
6491
6492 case TARGET_F_SETFL:
6493 ret = get_errno(safe_fcntl(fd, host_cmd,
6494 target_to_host_bitmask(arg,
6495 fcntl_flags_tbl)));
6496 break;
6497
6498 #ifdef F_GETOWN_EX
6499 case TARGET_F_GETOWN_EX:
6500 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6501 if (ret >= 0) {
6502 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
6503 return -TARGET_EFAULT;
6504 target_fox->type = tswap32(fox.type);
6505 target_fox->pid = tswap32(fox.pid);
6506 unlock_user_struct(target_fox, arg, 1);
6507 }
6508 break;
6509 #endif
6510
6511 #ifdef F_SETOWN_EX
6512 case TARGET_F_SETOWN_EX:
6513 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
6514 return -TARGET_EFAULT;
6515 fox.type = tswap32(target_fox->type);
6516 fox.pid = tswap32(target_fox->pid);
6517 unlock_user_struct(target_fox, arg, 0);
6518 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6519 break;
6520 #endif
6521
6522 case TARGET_F_SETOWN:
6523 case TARGET_F_GETOWN:
6524 case TARGET_F_SETSIG:
6525 case TARGET_F_GETSIG:
6526 case TARGET_F_SETLEASE:
6527 case TARGET_F_GETLEASE:
6528 case TARGET_F_SETPIPE_SZ:
6529 case TARGET_F_GETPIPE_SZ:
6530 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6531 break;
6532
6533 default:
6534 ret = get_errno(safe_fcntl(fd, cmd, arg));
6535 break;
6536 }
6537 return ret;
6538 }
6539
6540 #ifdef USE_UID16
6541
6542 static inline int high2lowuid(int uid)
6543 {
6544 if (uid > 65535)
6545 return 65534;
6546 else
6547 return uid;
6548 }
6549
6550 static inline int high2lowgid(int gid)
6551 {
6552 if (gid > 65535)
6553 return 65534;
6554 else
6555 return gid;
6556 }
6557
6558 static inline int low2highuid(int uid)
6559 {
6560 if ((int16_t)uid == -1)
6561 return -1;
6562 else
6563 return uid;
6564 }
6565
6566 static inline int low2highgid(int gid)
6567 {
6568 if ((int16_t)gid == -1)
6569 return -1;
6570 else
6571 return gid;
6572 }
6573 static inline int tswapid(int id)
6574 {
6575 return tswap16(id);
6576 }
6577
6578 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6579
6580 #else /* !USE_UID16 */
6581 static inline int high2lowuid(int uid)
6582 {
6583 return uid;
6584 }
6585 static inline int high2lowgid(int gid)
6586 {
6587 return gid;
6588 }
6589 static inline int low2highuid(int uid)
6590 {
6591 return uid;
6592 }
6593 static inline int low2highgid(int gid)
6594 {
6595 return gid;
6596 }
6597 static inline int tswapid(int id)
6598 {
6599 return tswap32(id);
6600 }
6601
6602 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6603
6604 #endif /* USE_UID16 */
6605
6606 /* We must do direct syscalls for setting UID/GID, because we want to
6607 * implement the Linux system call semantics of "change only for this thread",
6608 * not the libc/POSIX semantics of "change for all threads in process".
6609 * (See http://ewontfix.com/17/ for more details.)
6610 * We use the 32-bit version of the syscalls if present; if it is not
6611 * then either the host architecture supports 32-bit UIDs natively with
6612 * the standard syscall, or the 16-bit UID is the best we can do.
6613 */
6614 #ifdef __NR_setuid32
6615 #define __NR_sys_setuid __NR_setuid32
6616 #else
6617 #define __NR_sys_setuid __NR_setuid
6618 #endif
6619 #ifdef __NR_setgid32
6620 #define __NR_sys_setgid __NR_setgid32
6621 #else
6622 #define __NR_sys_setgid __NR_setgid
6623 #endif
6624 #ifdef __NR_setresuid32
6625 #define __NR_sys_setresuid __NR_setresuid32
6626 #else
6627 #define __NR_sys_setresuid __NR_setresuid
6628 #endif
6629 #ifdef __NR_setresgid32
6630 #define __NR_sys_setresgid __NR_setresgid32
6631 #else
6632 #define __NR_sys_setresgid __NR_setresgid
6633 #endif
6634
6635 _syscall1(int, sys_setuid, uid_t, uid)
6636 _syscall1(int, sys_setgid, gid_t, gid)
6637 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6638 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
6639
6640 void syscall_init(void)
6641 {
6642 IOCTLEntry *ie;
6643 const argtype *arg_type;
6644 int size;
6645 int i;
6646
6647 thunk_init(STRUCT_MAX);
6648
6649 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
6650 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
6651 #include "syscall_types.h"
6652 #undef STRUCT
6653 #undef STRUCT_SPECIAL
6654
6655 /* Build target_to_host_errno_table[] table from
6656 * host_to_target_errno_table[]. */
6657 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
6658 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
6659 }
6660
6661 /* we patch the ioctl size if necessary. We rely on the fact that
6662 no ioctl has all the bits at '1' in the size field */
6663 ie = ioctl_entries;
6664 while (ie->target_cmd != 0) {
6665 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
6666 TARGET_IOC_SIZEMASK) {
6667 arg_type = ie->arg_type;
6668 if (arg_type[0] != TYPE_PTR) {
6669 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
6670 ie->target_cmd);
6671 exit(1);
6672 }
6673 arg_type++;
6674 size = thunk_type_size(arg_type, 0);
6675 ie->target_cmd = (ie->target_cmd &
6676 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
6677 (size << TARGET_IOC_SIZESHIFT);
6678 }
6679
6680 /* automatic consistency check if same arch */
6681 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
6682 (defined(__x86_64__) && defined(TARGET_X86_64))
6683 if (unlikely(ie->target_cmd != ie->host_cmd)) {
6684 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
6685 ie->name, ie->target_cmd, ie->host_cmd);
6686 }
6687 #endif
6688 ie++;
6689 }
6690 }
6691
6692 #if TARGET_ABI_BITS == 32
6693 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
6694 {
6695 #ifdef TARGET_WORDS_BIGENDIAN
6696 return ((uint64_t)word0 << 32) | word1;
6697 #else
6698 return ((uint64_t)word1 << 32) | word0;
6699 #endif
6700 }
6701 #else /* TARGET_ABI_BITS == 32 */
6702 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
6703 {
6704 return word0;
6705 }
6706 #endif /* TARGET_ABI_BITS != 32 */
6707
6708 #ifdef TARGET_NR_truncate64
6709 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
6710 abi_long arg2,
6711 abi_long arg3,
6712 abi_long arg4)
6713 {
6714 if (regpairs_aligned(cpu_env)) {
6715 arg2 = arg3;
6716 arg3 = arg4;
6717 }
6718 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
6719 }
6720 #endif
6721
6722 #ifdef TARGET_NR_ftruncate64
6723 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
6724 abi_long arg2,
6725 abi_long arg3,
6726 abi_long arg4)
6727 {
6728 if (regpairs_aligned(cpu_env)) {
6729 arg2 = arg3;
6730 arg3 = arg4;
6731 }
6732 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
6733 }
6734 #endif
6735
6736 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
6737 abi_ulong target_addr)
6738 {
6739 struct target_timespec *target_ts;
6740
6741 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1))
6742 return -TARGET_EFAULT;
6743 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
6744 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6745 unlock_user_struct(target_ts, target_addr, 0);
6746 return 0;
6747 }
6748
6749 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
6750 struct timespec *host_ts)
6751 {
6752 struct target_timespec *target_ts;
6753
6754 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0))
6755 return -TARGET_EFAULT;
6756 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
6757 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6758 unlock_user_struct(target_ts, target_addr, 1);
6759 return 0;
6760 }
6761
6762 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec,
6763 abi_ulong target_addr)
6764 {
6765 struct target_itimerspec *target_itspec;
6766
6767 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) {
6768 return -TARGET_EFAULT;
6769 }
6770
6771 host_itspec->it_interval.tv_sec =
6772 tswapal(target_itspec->it_interval.tv_sec);
6773 host_itspec->it_interval.tv_nsec =
6774 tswapal(target_itspec->it_interval.tv_nsec);
6775 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec);
6776 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec);
6777
6778 unlock_user_struct(target_itspec, target_addr, 1);
6779 return 0;
6780 }
6781
6782 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
6783 struct itimerspec *host_its)
6784 {
6785 struct target_itimerspec *target_itspec;
6786
6787 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) {
6788 return -TARGET_EFAULT;
6789 }
6790
6791 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec);
6792 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec);
6793
6794 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec);
6795 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec);
6796
6797 unlock_user_struct(target_itspec, target_addr, 0);
6798 return 0;
6799 }
6800
6801 static inline abi_long target_to_host_timex(struct timex *host_tx,
6802 abi_long target_addr)
6803 {
6804 struct target_timex *target_tx;
6805
6806 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
6807 return -TARGET_EFAULT;
6808 }
6809
6810 __get_user(host_tx->modes, &target_tx->modes);
6811 __get_user(host_tx->offset, &target_tx->offset);
6812 __get_user(host_tx->freq, &target_tx->freq);
6813 __get_user(host_tx->maxerror, &target_tx->maxerror);
6814 __get_user(host_tx->esterror, &target_tx->esterror);
6815 __get_user(host_tx->status, &target_tx->status);
6816 __get_user(host_tx->constant, &target_tx->constant);
6817 __get_user(host_tx->precision, &target_tx->precision);
6818 __get_user(host_tx->tolerance, &target_tx->tolerance);
6819 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6820 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6821 __get_user(host_tx->tick, &target_tx->tick);
6822 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6823 __get_user(host_tx->jitter, &target_tx->jitter);
6824 __get_user(host_tx->shift, &target_tx->shift);
6825 __get_user(host_tx->stabil, &target_tx->stabil);
6826 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
6827 __get_user(host_tx->calcnt, &target_tx->calcnt);
6828 __get_user(host_tx->errcnt, &target_tx->errcnt);
6829 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
6830 __get_user(host_tx->tai, &target_tx->tai);
6831
6832 unlock_user_struct(target_tx, target_addr, 0);
6833 return 0;
6834 }
6835
6836 static inline abi_long host_to_target_timex(abi_long target_addr,
6837 struct timex *host_tx)
6838 {
6839 struct target_timex *target_tx;
6840
6841 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
6842 return -TARGET_EFAULT;
6843 }
6844
6845 __put_user(host_tx->modes, &target_tx->modes);
6846 __put_user(host_tx->offset, &target_tx->offset);
6847 __put_user(host_tx->freq, &target_tx->freq);
6848 __put_user(host_tx->maxerror, &target_tx->maxerror);
6849 __put_user(host_tx->esterror, &target_tx->esterror);
6850 __put_user(host_tx->status, &target_tx->status);
6851 __put_user(host_tx->constant, &target_tx->constant);
6852 __put_user(host_tx->precision, &target_tx->precision);
6853 __put_user(host_tx->tolerance, &target_tx->tolerance);
6854 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6855 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6856 __put_user(host_tx->tick, &target_tx->tick);
6857 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6858 __put_user(host_tx->jitter, &target_tx->jitter);
6859 __put_user(host_tx->shift, &target_tx->shift);
6860 __put_user(host_tx->stabil, &target_tx->stabil);
6861 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
6862 __put_user(host_tx->calcnt, &target_tx->calcnt);
6863 __put_user(host_tx->errcnt, &target_tx->errcnt);
6864 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
6865 __put_user(host_tx->tai, &target_tx->tai);
6866
6867 unlock_user_struct(target_tx, target_addr, 1);
6868 return 0;
6869 }
6870
6871
6872 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
6873 abi_ulong target_addr)
6874 {
6875 struct target_sigevent *target_sevp;
6876
6877 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
6878 return -TARGET_EFAULT;
6879 }
6880
6881 /* This union is awkward on 64 bit systems because it has a 32 bit
6882 * integer and a pointer in it; we follow the conversion approach
6883 * used for handling sigval types in signal.c so the guest should get
6884 * the correct value back even if we did a 64 bit byteswap and it's
6885 * using the 32 bit integer.
6886 */
6887 host_sevp->sigev_value.sival_ptr =
6888 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
6889 host_sevp->sigev_signo =
6890 target_to_host_signal(tswap32(target_sevp->sigev_signo));
6891 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
6892 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
6893
6894 unlock_user_struct(target_sevp, target_addr, 1);
6895 return 0;
6896 }
6897
6898 #if defined(TARGET_NR_mlockall)
6899 static inline int target_to_host_mlockall_arg(int arg)
6900 {
6901 int result = 0;
6902
6903 if (arg & TARGET_MLOCKALL_MCL_CURRENT) {
6904 result |= MCL_CURRENT;
6905 }
6906 if (arg & TARGET_MLOCKALL_MCL_FUTURE) {
6907 result |= MCL_FUTURE;
6908 }
6909 return result;
6910 }
6911 #endif
6912
6913 static inline abi_long host_to_target_stat64(void *cpu_env,
6914 abi_ulong target_addr,
6915 struct stat *host_st)
6916 {
6917 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
6918 if (((CPUARMState *)cpu_env)->eabi) {
6919 struct target_eabi_stat64 *target_st;
6920
6921 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6922 return -TARGET_EFAULT;
6923 memset(target_st, 0, sizeof(struct target_eabi_stat64));
6924 __put_user(host_st->st_dev, &target_st->st_dev);
6925 __put_user(host_st->st_ino, &target_st->st_ino);
6926 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6927 __put_user(host_st->st_ino, &target_st->__st_ino);
6928 #endif
6929 __put_user(host_st->st_mode, &target_st->st_mode);
6930 __put_user(host_st->st_nlink, &target_st->st_nlink);
6931 __put_user(host_st->st_uid, &target_st->st_uid);
6932 __put_user(host_st->st_gid, &target_st->st_gid);
6933 __put_user(host_st->st_rdev, &target_st->st_rdev);
6934 __put_user(host_st->st_size, &target_st->st_size);
6935 __put_user(host_st->st_blksize, &target_st->st_blksize);
6936 __put_user(host_st->st_blocks, &target_st->st_blocks);
6937 __put_user(host_st->st_atime, &target_st->target_st_atime);
6938 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6939 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6940 unlock_user_struct(target_st, target_addr, 1);
6941 } else
6942 #endif
6943 {
6944 #if defined(TARGET_HAS_STRUCT_STAT64)
6945 struct target_stat64 *target_st;
6946 #else
6947 struct target_stat *target_st;
6948 #endif
6949
6950 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6951 return -TARGET_EFAULT;
6952 memset(target_st, 0, sizeof(*target_st));
6953 __put_user(host_st->st_dev, &target_st->st_dev);
6954 __put_user(host_st->st_ino, &target_st->st_ino);
6955 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6956 __put_user(host_st->st_ino, &target_st->__st_ino);
6957 #endif
6958 __put_user(host_st->st_mode, &target_st->st_mode);
6959 __put_user(host_st->st_nlink, &target_st->st_nlink);
6960 __put_user(host_st->st_uid, &target_st->st_uid);
6961 __put_user(host_st->st_gid, &target_st->st_gid);
6962 __put_user(host_st->st_rdev, &target_st->st_rdev);
6963 /* XXX: better use of kernel struct */
6964 __put_user(host_st->st_size, &target_st->st_size);
6965 __put_user(host_st->st_blksize, &target_st->st_blksize);
6966 __put_user(host_st->st_blocks, &target_st->st_blocks);
6967 __put_user(host_st->st_atime, &target_st->target_st_atime);
6968 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6969 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6970 unlock_user_struct(target_st, target_addr, 1);
6971 }
6972
6973 return 0;
6974 }
6975
6976 /* ??? Using host futex calls even when target atomic operations
6977 are not really atomic probably breaks things. However implementing
6978 futexes locally would make futexes shared between multiple processes
6979 tricky. However they're probably useless because guest atomic
6980 operations won't work either. */
6981 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
6982 target_ulong uaddr2, int val3)
6983 {
6984 struct timespec ts, *pts;
6985 int base_op;
6986
6987 /* ??? We assume FUTEX_* constants are the same on both host
6988 and target. */
6989 #ifdef FUTEX_CMD_MASK
6990 base_op = op & FUTEX_CMD_MASK;
6991 #else
6992 base_op = op;
6993 #endif
6994 switch (base_op) {
6995 case FUTEX_WAIT:
6996 case FUTEX_WAIT_BITSET:
6997 if (timeout) {
6998 pts = &ts;
6999 target_to_host_timespec(pts, timeout);
7000 } else {
7001 pts = NULL;
7002 }
7003 return get_errno(safe_futex(g2h(uaddr), op, tswap32(val),
7004 pts, NULL, val3));
7005 case FUTEX_WAKE:
7006 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
7007 case FUTEX_FD:
7008 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
7009 case FUTEX_REQUEUE:
7010 case FUTEX_CMP_REQUEUE:
7011 case FUTEX_WAKE_OP:
7012 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7013 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7014 But the prototype takes a `struct timespec *'; insert casts
7015 to satisfy the compiler. We do not need to tswap TIMEOUT
7016 since it's not compared to guest memory. */
7017 pts = (struct timespec *)(uintptr_t) timeout;
7018 return get_errno(safe_futex(g2h(uaddr), op, val, pts,
7019 g2h(uaddr2),
7020 (base_op == FUTEX_CMP_REQUEUE
7021 ? tswap32(val3)
7022 : val3)));
7023 default:
7024 return -TARGET_ENOSYS;
7025 }
7026 }
7027 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7028 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7029 abi_long handle, abi_long mount_id,
7030 abi_long flags)
7031 {
7032 struct file_handle *target_fh;
7033 struct file_handle *fh;
7034 int mid = 0;
7035 abi_long ret;
7036 char *name;
7037 unsigned int size, total_size;
7038
7039 if (get_user_s32(size, handle)) {
7040 return -TARGET_EFAULT;
7041 }
7042
7043 name = lock_user_string(pathname);
7044 if (!name) {
7045 return -TARGET_EFAULT;
7046 }
7047
7048 total_size = sizeof(struct file_handle) + size;
7049 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7050 if (!target_fh) {
7051 unlock_user(name, pathname, 0);
7052 return -TARGET_EFAULT;
7053 }
7054
7055 fh = g_malloc0(total_size);
7056 fh->handle_bytes = size;
7057
7058 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7059 unlock_user(name, pathname, 0);
7060
7061 /* man name_to_handle_at(2):
7062 * Other than the use of the handle_bytes field, the caller should treat
7063 * the file_handle structure as an opaque data type
7064 */
7065
7066 memcpy(target_fh, fh, total_size);
7067 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7068 target_fh->handle_type = tswap32(fh->handle_type);
7069 g_free(fh);
7070 unlock_user(target_fh, handle, total_size);
7071
7072 if (put_user_s32(mid, mount_id)) {
7073 return -TARGET_EFAULT;
7074 }
7075
7076 return ret;
7077
7078 }
7079 #endif
7080
7081 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7082 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7083 abi_long flags)
7084 {
7085 struct file_handle *target_fh;
7086 struct file_handle *fh;
7087 unsigned int size, total_size;
7088 abi_long ret;
7089
7090 if (get_user_s32(size, handle)) {
7091 return -TARGET_EFAULT;
7092 }
7093
7094 total_size = sizeof(struct file_handle) + size;
7095 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7096 if (!target_fh) {
7097 return -TARGET_EFAULT;
7098 }
7099
7100 fh = g_memdup(target_fh, total_size);
7101 fh->handle_bytes = size;
7102 fh->handle_type = tswap32(target_fh->handle_type);
7103
7104 ret = get_errno(open_by_handle_at(mount_fd, fh,
7105 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7106
7107 g_free(fh);
7108
7109 unlock_user(target_fh, handle, total_size);
7110
7111 return ret;
7112 }
7113 #endif
7114
7115 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7116
7117 /* signalfd siginfo conversion */
7118
7119 static void
7120 host_to_target_signalfd_siginfo(struct signalfd_siginfo *tinfo,
7121 const struct signalfd_siginfo *info)
7122 {
7123 int sig = host_to_target_signal(info->ssi_signo);
7124
7125 /* linux/signalfd.h defines a ssi_addr_lsb
7126 * not defined in sys/signalfd.h but used by some kernels
7127 */
7128
7129 #ifdef BUS_MCEERR_AO
7130 if (tinfo->ssi_signo == SIGBUS &&
7131 (tinfo->ssi_code == BUS_MCEERR_AR ||
7132 tinfo->ssi_code == BUS_MCEERR_AO)) {
7133 uint16_t *ssi_addr_lsb = (uint16_t *)(&info->ssi_addr + 1);
7134 uint16_t *tssi_addr_lsb = (uint16_t *)(&tinfo->ssi_addr + 1);
7135 *tssi_addr_lsb = tswap16(*ssi_addr_lsb);
7136 }
7137 #endif
7138
7139 tinfo->ssi_signo = tswap32(sig);
7140 tinfo->ssi_errno = tswap32(tinfo->ssi_errno);
7141 tinfo->ssi_code = tswap32(info->ssi_code);
7142 tinfo->ssi_pid = tswap32(info->ssi_pid);
7143 tinfo->ssi_uid = tswap32(info->ssi_uid);
7144 tinfo->ssi_fd = tswap32(info->ssi_fd);
7145 tinfo->ssi_tid = tswap32(info->ssi_tid);
7146 tinfo->ssi_band = tswap32(info->ssi_band);
7147 tinfo->ssi_overrun = tswap32(info->ssi_overrun);
7148 tinfo->ssi_trapno = tswap32(info->ssi_trapno);
7149 tinfo->ssi_status = tswap32(info->ssi_status);
7150 tinfo->ssi_int = tswap32(info->ssi_int);
7151 tinfo->ssi_ptr = tswap64(info->ssi_ptr);
7152 tinfo->ssi_utime = tswap64(info->ssi_utime);
7153 tinfo->ssi_stime = tswap64(info->ssi_stime);
7154 tinfo->ssi_addr = tswap64(info->ssi_addr);
7155 }
7156
7157 static abi_long host_to_target_data_signalfd(void *buf, size_t len)
7158 {
7159 int i;
7160
7161 for (i = 0; i < len; i += sizeof(struct signalfd_siginfo)) {
7162 host_to_target_signalfd_siginfo(buf + i, buf + i);
7163 }
7164
7165 return len;
7166 }
7167
7168 static TargetFdTrans target_signalfd_trans = {
7169 .host_to_target_data = host_to_target_data_signalfd,
7170 };
7171
7172 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7173 {
7174 int host_flags;
7175 target_sigset_t *target_mask;
7176 sigset_t host_mask;
7177 abi_long ret;
7178
7179 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
7180 return -TARGET_EINVAL;
7181 }
7182 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7183 return -TARGET_EFAULT;
7184 }
7185
7186 target_to_host_sigset(&host_mask, target_mask);
7187
7188 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7189
7190 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7191 if (ret >= 0) {
7192 fd_trans_register(ret, &target_signalfd_trans);
7193 }
7194
7195 unlock_user_struct(target_mask, mask, 0);
7196
7197 return ret;
7198 }
7199 #endif
7200
7201 /* Map host to target signal numbers for the wait family of syscalls.
7202 Assume all other status bits are the same. */
7203 int host_to_target_waitstatus(int status)
7204 {
7205 if (WIFSIGNALED(status)) {
7206 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7207 }
7208 if (WIFSTOPPED(status)) {
7209 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7210 | (status & 0xff);
7211 }
7212 return status;
7213 }
7214
7215 static int open_self_cmdline(void *cpu_env, int fd)
7216 {
7217 int fd_orig = -1;
7218 bool word_skipped = false;
7219
7220 fd_orig = open("/proc/self/cmdline", O_RDONLY);
7221 if (fd_orig < 0) {
7222 return fd_orig;
7223 }
7224
7225 while (true) {
7226 ssize_t nb_read;
7227 char buf[128];
7228 char *cp_buf = buf;
7229
7230 nb_read = read(fd_orig, buf, sizeof(buf));
7231 if (nb_read < 0) {
7232 int e = errno;
7233 fd_orig = close(fd_orig);
7234 errno = e;
7235 return -1;
7236 } else if (nb_read == 0) {
7237 break;
7238 }
7239
7240 if (!word_skipped) {
7241 /* Skip the first string, which is the path to qemu-*-static
7242 instead of the actual command. */
7243 cp_buf = memchr(buf, 0, nb_read);
7244 if (cp_buf) {
7245 /* Null byte found, skip one string */
7246 cp_buf++;
7247 nb_read -= cp_buf - buf;
7248 word_skipped = true;
7249 }
7250 }
7251
7252 if (word_skipped) {
7253 if (write(fd, cp_buf, nb_read) != nb_read) {
7254 int e = errno;
7255 close(fd_orig);
7256 errno = e;
7257 return -1;
7258 }
7259 }
7260 }
7261
7262 return close(fd_orig);
7263 }
7264
7265 static int open_self_maps(void *cpu_env, int fd)
7266 {
7267 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7268 TaskState *ts = cpu->opaque;
7269 FILE *fp;
7270 char *line = NULL;
7271 size_t len = 0;
7272 ssize_t read;
7273
7274 fp = fopen("/proc/self/maps", "r");
7275 if (fp == NULL) {
7276 return -1;
7277 }
7278
7279 while ((read = getline(&line, &len, fp)) != -1) {
7280 int fields, dev_maj, dev_min, inode;
7281 uint64_t min, max, offset;
7282 char flag_r, flag_w, flag_x, flag_p;
7283 char path[512] = "";
7284 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
7285 " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
7286 &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
7287
7288 if ((fields < 10) || (fields > 11)) {
7289 continue;
7290 }
7291 if (h2g_valid(min)) {
7292 int flags = page_get_flags(h2g(min));
7293 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX);
7294 if (page_check_range(h2g(min), max - min, flags) == -1) {
7295 continue;
7296 }
7297 if (h2g(min) == ts->info->stack_limit) {
7298 pstrcpy(path, sizeof(path), " [stack]");
7299 }
7300 dprintf(fd, TARGET_ABI_FMT_lx "-" TARGET_ABI_FMT_lx
7301 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
7302 h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
7303 flag_x, flag_p, offset, dev_maj, dev_min, inode,
7304 path[0] ? " " : "", path);
7305 }
7306 }
7307
7308 free(line);
7309 fclose(fp);
7310
7311 return 0;
7312 }
7313
7314 static int open_self_stat(void *cpu_env, int fd)
7315 {
7316 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7317 TaskState *ts = cpu->opaque;
7318 abi_ulong start_stack = ts->info->start_stack;
7319 int i;
7320
7321 for (i = 0; i < 44; i++) {
7322 char buf[128];
7323 int len;
7324 uint64_t val = 0;
7325
7326 if (i == 0) {
7327 /* pid */
7328 val = getpid();
7329 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
7330 } else if (i == 1) {
7331 /* app name */
7332 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
7333 } else if (i == 27) {
7334 /* stack bottom */
7335 val = start_stack;
7336 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
7337 } else {
7338 /* for the rest, there is MasterCard */
7339 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
7340 }
7341
7342 len = strlen(buf);
7343 if (write(fd, buf, len) != len) {
7344 return -1;
7345 }
7346 }
7347
7348 return 0;
7349 }
7350
7351 static int open_self_auxv(void *cpu_env, int fd)
7352 {
7353 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
7354 TaskState *ts = cpu->opaque;
7355 abi_ulong auxv = ts->info->saved_auxv;
7356 abi_ulong len = ts->info->auxv_len;
7357 char *ptr;
7358
7359 /*
7360 * Auxiliary vector is stored in target process stack.
7361 * read in whole auxv vector and copy it to file
7362 */
7363 ptr = lock_user(VERIFY_READ, auxv, len, 0);
7364 if (ptr != NULL) {
7365 while (len > 0) {
7366 ssize_t r;
7367 r = write(fd, ptr, len);
7368 if (r <= 0) {
7369 break;
7370 }
7371 len -= r;
7372 ptr += r;
7373 }
7374 lseek(fd, 0, SEEK_SET);
7375 unlock_user(ptr, auxv, len);
7376 }
7377
7378 return 0;
7379 }
7380
7381 static int is_proc_myself(const char *filename, const char *entry)
7382 {
7383 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
7384 filename += strlen("/proc/");
7385 if (!strncmp(filename, "self/", strlen("self/"))) {
7386 filename += strlen("self/");
7387 } else if (*filename >= '1' && *filename <= '9') {
7388 char myself[80];
7389 snprintf(myself, sizeof(myself), "%d/", getpid());
7390 if (!strncmp(filename, myself, strlen(myself))) {
7391 filename += strlen(myself);
7392 } else {
7393 return 0;
7394 }
7395 } else {
7396 return 0;
7397 }
7398 if (!strcmp(filename, entry)) {
7399 return 1;
7400 }
7401 }
7402 return 0;
7403 }
7404
7405 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7406 static int is_proc(const char *filename, const char *entry)
7407 {
7408 return strcmp(filename, entry) == 0;
7409 }
7410
7411 static int open_net_route(void *cpu_env, int fd)
7412 {
7413 FILE *fp;
7414 char *line = NULL;
7415 size_t len = 0;
7416 ssize_t read;
7417
7418 fp = fopen("/proc/net/route", "r");
7419 if (fp == NULL) {
7420 return -1;
7421 }
7422
7423 /* read header */
7424
7425 read = getline(&line, &len, fp);
7426 dprintf(fd, "%s", line);
7427
7428 /* read routes */
7429
7430 while ((read = getline(&line, &len, fp)) != -1) {
7431 char iface[16];
7432 uint32_t dest, gw, mask;
7433 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
7434 sscanf(line, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7435 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
7436 &mask, &mtu, &window, &irtt);
7437 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7438 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
7439 metric, tswap32(mask), mtu, window, irtt);
7440 }
7441
7442 free(line);
7443 fclose(fp);
7444
7445 return 0;
7446 }
7447 #endif
7448
7449 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
7450 {
7451 struct fake_open {
7452 const char *filename;
7453 int (*fill)(void *cpu_env, int fd);
7454 int (*cmp)(const char *s1, const char *s2);
7455 };
7456 const struct fake_open *fake_open;
7457 static const struct fake_open fakes[] = {
7458 { "maps", open_self_maps, is_proc_myself },
7459 { "stat", open_self_stat, is_proc_myself },
7460 { "auxv", open_self_auxv, is_proc_myself },
7461 { "cmdline", open_self_cmdline, is_proc_myself },
7462 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7463 { "/proc/net/route", open_net_route, is_proc },
7464 #endif
7465 { NULL, NULL, NULL }
7466 };
7467
7468 if (is_proc_myself(pathname, "exe")) {
7469 int execfd = qemu_getauxval(AT_EXECFD);
7470 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
7471 }
7472
7473 for (fake_open = fakes; fake_open->filename; fake_open++) {
7474 if (fake_open->cmp(pathname, fake_open->filename)) {
7475 break;
7476 }
7477 }
7478
7479 if (fake_open->filename) {
7480 const char *tmpdir;
7481 char filename[PATH_MAX];
7482 int fd, r;
7483
7484 /* create temporary file to map stat to */
7485 tmpdir = getenv("TMPDIR");
7486 if (!tmpdir)
7487 tmpdir = "/tmp";
7488 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
7489 fd = mkstemp(filename);
7490 if (fd < 0) {
7491 return fd;
7492 }
7493 unlink(filename);
7494
7495 if ((r = fake_open->fill(cpu_env, fd))) {
7496 int e = errno;
7497 close(fd);
7498 errno = e;
7499 return r;
7500 }
7501 lseek(fd, 0, SEEK_SET);
7502
7503 return fd;
7504 }
7505
7506 return safe_openat(dirfd, path(pathname), flags, mode);
7507 }
7508
7509 #define TIMER_MAGIC 0x0caf0000
7510 #define TIMER_MAGIC_MASK 0xffff0000
7511
7512 /* Convert QEMU provided timer ID back to internal 16bit index format */
7513 static target_timer_t get_timer_id(abi_long arg)
7514 {
7515 target_timer_t timerid = arg;
7516
7517 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
7518 return -TARGET_EINVAL;
7519 }
7520
7521 timerid &= 0xffff;
7522
7523 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
7524 return -TARGET_EINVAL;
7525 }
7526
7527 return timerid;
7528 }
7529
7530 /* do_syscall() should always have a single exit point at the end so
7531 that actions, such as logging of syscall results, can be performed.
7532 All errnos that do_syscall() returns must be -TARGET_<errcode>. */
7533 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
7534 abi_long arg2, abi_long arg3, abi_long arg4,
7535 abi_long arg5, abi_long arg6, abi_long arg7,
7536 abi_long arg8)
7537 {
7538 CPUState *cpu = ENV_GET_CPU(cpu_env);
7539 abi_long ret;
7540 struct stat st;
7541 struct statfs stfs;
7542 void *p;
7543
7544 #if defined(DEBUG_ERESTARTSYS)
7545 /* Debug-only code for exercising the syscall-restart code paths
7546 * in the per-architecture cpu main loops: restart every syscall
7547 * the guest makes once before letting it through.
7548 */
7549 {
7550 static int flag;
7551
7552 flag = !flag;
7553 if (flag) {
7554 return -TARGET_ERESTARTSYS;
7555 }
7556 }
7557 #endif
7558
7559 #ifdef DEBUG
7560 gemu_log("syscall %d", num);
7561 #endif
7562 trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
7563 if(do_strace)
7564 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
7565
7566 switch(num) {
7567 case TARGET_NR_exit:
7568 /* In old applications this may be used to implement _exit(2).
7569 However in threaded applictions it is used for thread termination,
7570 and _exit_group is used for application termination.
7571 Do thread termination if we have more then one thread. */
7572
7573 if (block_signals()) {
7574 ret = -TARGET_ERESTARTSYS;
7575 break;
7576 }
7577
7578 cpu_list_lock();
7579
7580 if (CPU_NEXT(first_cpu)) {
7581 TaskState *ts;
7582
7583 /* Remove the CPU from the list. */
7584 QTAILQ_REMOVE(&cpus, cpu, node);
7585
7586 cpu_list_unlock();
7587
7588 ts = cpu->opaque;
7589 if (ts->child_tidptr) {
7590 put_user_u32(0, ts->child_tidptr);
7591 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
7592 NULL, NULL, 0);
7593 }
7594 thread_cpu = NULL;
7595 object_unref(OBJECT(cpu));
7596 g_free(ts);
7597 rcu_unregister_thread();
7598 pthread_exit(NULL);
7599 }
7600
7601 cpu_list_unlock();
7602 #ifdef TARGET_GPROF
7603 _mcleanup();
7604 #endif
7605 gdb_exit(cpu_env, arg1);
7606 _exit(arg1);
7607 ret = 0; /* avoid warning */
7608 break;
7609 case TARGET_NR_read:
7610 if (arg3 == 0)
7611 ret = 0;
7612 else {
7613 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
7614 goto efault;
7615 ret = get_errno(safe_read(arg1, p, arg3));
7616 if (ret >= 0 &&
7617 fd_trans_host_to_target_data(arg1)) {
7618 ret = fd_trans_host_to_target_data(arg1)(p, ret);
7619 }
7620 unlock_user(p, arg2, ret);
7621 }
7622 break;
7623 case TARGET_NR_write:
7624 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
7625 goto efault;
7626 ret = get_errno(safe_write(arg1, p, arg3));
7627 unlock_user(p, arg2, 0);
7628 break;
7629 #ifdef TARGET_NR_open
7630 case TARGET_NR_open:
7631 if (!(p = lock_user_string(arg1)))
7632 goto efault;
7633 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
7634 target_to_host_bitmask(arg2, fcntl_flags_tbl),
7635 arg3));
7636 fd_trans_unregister(ret);
7637 unlock_user(p, arg1, 0);
7638 break;
7639 #endif
7640 case TARGET_NR_openat:
7641 if (!(p = lock_user_string(arg2)))
7642 goto efault;
7643 ret = get_errno(do_openat(cpu_env, arg1, p,
7644 target_to_host_bitmask(arg3, fcntl_flags_tbl),
7645 arg4));
7646 fd_trans_unregister(ret);
7647 unlock_user(p, arg2, 0);
7648 break;
7649 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7650 case TARGET_NR_name_to_handle_at:
7651 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
7652 break;
7653 #endif
7654 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7655 case TARGET_NR_open_by_handle_at:
7656 ret = do_open_by_handle_at(arg1, arg2, arg3);
7657 fd_trans_unregister(ret);
7658 break;
7659 #endif
7660 case TARGET_NR_close:
7661 fd_trans_unregister(arg1);
7662 ret = get_errno(close(arg1));
7663 break;
7664 case TARGET_NR_brk:
7665 ret = do_brk(arg1);
7666 break;
7667 #ifdef TARGET_NR_fork
7668 case TARGET_NR_fork:
7669 ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, 0, 0, 0));
7670 break;
7671 #endif
7672 #ifdef TARGET_NR_waitpid
7673 case TARGET_NR_waitpid:
7674 {
7675 int status;
7676 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
7677 if (!is_error(ret) && arg2 && ret
7678 && put_user_s32(host_to_target_waitstatus(status), arg2))
7679 goto efault;
7680 }
7681 break;
7682 #endif
7683 #ifdef TARGET_NR_waitid
7684 case TARGET_NR_waitid:
7685 {
7686 siginfo_t info;
7687 info.si_pid = 0;
7688 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
7689 if (!is_error(ret) && arg3 && info.si_pid != 0) {
7690 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
7691 goto efault;
7692 host_to_target_siginfo(p, &info);
7693 unlock_user(p, arg3, sizeof(target_siginfo_t));
7694 }
7695 }
7696 break;
7697 #endif
7698 #ifdef TARGET_NR_creat /* not on alpha */
7699 case TARGET_NR_creat:
7700 if (!(p = lock_user_string(arg1)))
7701 goto efault;
7702 ret = get_errno(creat(p, arg2));
7703 fd_trans_unregister(ret);
7704 unlock_user(p, arg1, 0);
7705 break;
7706 #endif
7707 #ifdef TARGET_NR_link
7708 case TARGET_NR_link:
7709 {
7710 void * p2;
7711 p = lock_user_string(arg1);
7712 p2 = lock_user_string(arg2);
7713 if (!p || !p2)
7714 ret = -TARGET_EFAULT;
7715 else
7716 ret = get_errno(link(p, p2));
7717 unlock_user(p2, arg2, 0);
7718 unlock_user(p, arg1, 0);
7719 }
7720 break;
7721 #endif
7722 #if defined(TARGET_NR_linkat)
7723 case TARGET_NR_linkat:
7724 {
7725 void * p2 = NULL;
7726 if (!arg2 || !arg4)
7727 goto efault;
7728 p = lock_user_string(arg2);
7729 p2 = lock_user_string(arg4);
7730 if (!p || !p2)
7731 ret = -TARGET_EFAULT;
7732 else
7733 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
7734 unlock_user(p, arg2, 0);
7735 unlock_user(p2, arg4, 0);
7736 }
7737 break;
7738 #endif
7739 #ifdef TARGET_NR_unlink
7740 case TARGET_NR_unlink:
7741 if (!(p = lock_user_string(arg1)))
7742 goto efault;
7743 ret = get_errno(unlink(p));
7744 unlock_user(p, arg1, 0);
7745 break;
7746 #endif
7747 #if defined(TARGET_NR_unlinkat)
7748 case TARGET_NR_unlinkat:
7749 if (!(p = lock_user_string(arg2)))
7750 goto efault;
7751 ret = get_errno(unlinkat(arg1, p, arg3));
7752 unlock_user(p, arg2, 0);
7753 break;
7754 #endif
7755 case TARGET_NR_execve:
7756 {
7757 char **argp, **envp;
7758 int argc, envc;
7759 abi_ulong gp;
7760 abi_ulong guest_argp;
7761 abi_ulong guest_envp;
7762 abi_ulong addr;
7763 char **q;
7764 int total_size = 0;
7765
7766 argc = 0;
7767 guest_argp = arg2;
7768 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
7769 if (get_user_ual(addr, gp))
7770 goto efault;
7771 if (!addr)
7772 break;
7773 argc++;
7774 }
7775 envc = 0;
7776 guest_envp = arg3;
7777 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
7778 if (get_user_ual(addr, gp))
7779 goto efault;
7780 if (!addr)
7781 break;
7782 envc++;
7783 }
7784
7785 argp = alloca((argc + 1) * sizeof(void *));
7786 envp = alloca((envc + 1) * sizeof(void *));
7787
7788 for (gp = guest_argp, q = argp; gp;
7789 gp += sizeof(abi_ulong), q++) {
7790 if (get_user_ual(addr, gp))
7791 goto execve_efault;
7792 if (!addr)
7793 break;
7794 if (!(*q = lock_user_string(addr)))
7795 goto execve_efault;
7796 total_size += strlen(*q) + 1;
7797 }
7798 *q = NULL;
7799
7800 for (gp = guest_envp, q = envp; gp;
7801 gp += sizeof(abi_ulong), q++) {
7802 if (get_user_ual(addr, gp))
7803 goto execve_efault;
7804 if (!addr)
7805 break;
7806 if (!(*q = lock_user_string(addr)))
7807 goto execve_efault;
7808 total_size += strlen(*q) + 1;
7809 }
7810 *q = NULL;
7811
7812 if (!(p = lock_user_string(arg1)))
7813 goto execve_efault;
7814 /* Although execve() is not an interruptible syscall it is
7815 * a special case where we must use the safe_syscall wrapper:
7816 * if we allow a signal to happen before we make the host
7817 * syscall then we will 'lose' it, because at the point of
7818 * execve the process leaves QEMU's control. So we use the
7819 * safe syscall wrapper to ensure that we either take the
7820 * signal as a guest signal, or else it does not happen
7821 * before the execve completes and makes it the other
7822 * program's problem.
7823 */
7824 ret = get_errno(safe_execve(p, argp, envp));
7825 unlock_user(p, arg1, 0);
7826
7827 goto execve_end;
7828
7829 execve_efault:
7830 ret = -TARGET_EFAULT;
7831
7832 execve_end:
7833 for (gp = guest_argp, q = argp; *q;
7834 gp += sizeof(abi_ulong), q++) {
7835 if (get_user_ual(addr, gp)
7836 || !addr)
7837 break;
7838 unlock_user(*q, addr, 0);
7839 }
7840 for (gp = guest_envp, q = envp; *q;
7841 gp += sizeof(abi_ulong), q++) {
7842 if (get_user_ual(addr, gp)
7843 || !addr)
7844 break;
7845 unlock_user(*q, addr, 0);
7846 }
7847 }
7848 break;
7849 case TARGET_NR_chdir:
7850 if (!(p = lock_user_string(arg1)))
7851 goto efault;
7852 ret = get_errno(chdir(p));
7853 unlock_user(p, arg1, 0);
7854 break;
7855 #ifdef TARGET_NR_time
7856 case TARGET_NR_time:
7857 {
7858 time_t host_time;
7859 ret = get_errno(time(&host_time));
7860 if (!is_error(ret)
7861 && arg1
7862 && put_user_sal(host_time, arg1))
7863 goto efault;
7864 }
7865 break;
7866 #endif
7867 #ifdef TARGET_NR_mknod
7868 case TARGET_NR_mknod:
7869 if (!(p = lock_user_string(arg1)))
7870 goto efault;
7871 ret = get_errno(mknod(p, arg2, arg3));
7872 unlock_user(p, arg1, 0);
7873 break;
7874 #endif
7875 #if defined(TARGET_NR_mknodat)
7876 case TARGET_NR_mknodat:
7877 if (!(p = lock_user_string(arg2)))
7878 goto efault;
7879 ret = get_errno(mknodat(arg1, p, arg3, arg4));
7880 unlock_user(p, arg2, 0);
7881 break;
7882 #endif
7883 #ifdef TARGET_NR_chmod
7884 case TARGET_NR_chmod:
7885 if (!(p = lock_user_string(arg1)))
7886 goto efault;
7887 ret = get_errno(chmod(p, arg2));
7888 unlock_user(p, arg1, 0);
7889 break;
7890 #endif
7891 #ifdef TARGET_NR_break
7892 case TARGET_NR_break:
7893 goto unimplemented;
7894 #endif
7895 #ifdef TARGET_NR_oldstat
7896 case TARGET_NR_oldstat:
7897 goto unimplemented;
7898 #endif
7899 case TARGET_NR_lseek:
7900 ret = get_errno(lseek(arg1, arg2, arg3));
7901 break;
7902 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
7903 /* Alpha specific */
7904 case TARGET_NR_getxpid:
7905 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
7906 ret = get_errno(getpid());
7907 break;
7908 #endif
7909 #ifdef TARGET_NR_getpid
7910 case TARGET_NR_getpid:
7911 ret = get_errno(getpid());
7912 break;
7913 #endif
7914 case TARGET_NR_mount:
7915 {
7916 /* need to look at the data field */
7917 void *p2, *p3;
7918
7919 if (arg1) {
7920 p = lock_user_string(arg1);
7921 if (!p) {
7922 goto efault;
7923 }
7924 } else {
7925 p = NULL;
7926 }
7927
7928 p2 = lock_user_string(arg2);
7929 if (!p2) {
7930 if (arg1) {
7931 unlock_user(p, arg1, 0);
7932 }
7933 goto efault;
7934 }
7935
7936 if (arg3) {
7937 p3 = lock_user_string(arg3);
7938 if (!p3) {
7939 if (arg1) {
7940 unlock_user(p, arg1, 0);
7941 }
7942 unlock_user(p2, arg2, 0);
7943 goto efault;
7944 }
7945 } else {
7946 p3 = NULL;
7947 }
7948
7949 /* FIXME - arg5 should be locked, but it isn't clear how to
7950 * do that since it's not guaranteed to be a NULL-terminated
7951 * string.
7952 */
7953 if (!arg5) {
7954 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
7955 } else {
7956 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
7957 }
7958 ret = get_errno(ret);
7959
7960 if (arg1) {
7961 unlock_user(p, arg1, 0);
7962 }
7963 unlock_user(p2, arg2, 0);
7964 if (arg3) {
7965 unlock_user(p3, arg3, 0);
7966 }
7967 }
7968 break;
7969 #ifdef TARGET_NR_umount
7970 case TARGET_NR_umount:
7971 if (!(p = lock_user_string(arg1)))
7972 goto efault;
7973 ret = get_errno(umount(p));
7974 unlock_user(p, arg1, 0);
7975 break;
7976 #endif
7977 #ifdef TARGET_NR_stime /* not on alpha */
7978 case TARGET_NR_stime:
7979 {
7980 time_t host_time;
7981 if (get_user_sal(host_time, arg1))
7982 goto efault;
7983 ret = get_errno(stime(&host_time));
7984 }
7985 break;
7986 #endif
7987 case TARGET_NR_ptrace:
7988 goto unimplemented;
7989 #ifdef TARGET_NR_alarm /* not on alpha */
7990 case TARGET_NR_alarm:
7991 ret = alarm(arg1);
7992 break;
7993 #endif
7994 #ifdef TARGET_NR_oldfstat
7995 case TARGET_NR_oldfstat:
7996 goto unimplemented;
7997 #endif
7998 #ifdef TARGET_NR_pause /* not on alpha */
7999 case TARGET_NR_pause:
8000 if (!block_signals()) {
8001 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
8002 }
8003 ret = -TARGET_EINTR;
8004 break;
8005 #endif
8006 #ifdef TARGET_NR_utime
8007 case TARGET_NR_utime:
8008 {
8009 struct utimbuf tbuf, *host_tbuf;
8010 struct target_utimbuf *target_tbuf;
8011 if (arg2) {
8012 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
8013 goto efault;
8014 tbuf.actime = tswapal(target_tbuf->actime);
8015 tbuf.modtime = tswapal(target_tbuf->modtime);
8016 unlock_user_struct(target_tbuf, arg2, 0);
8017 host_tbuf = &tbuf;
8018 } else {
8019 host_tbuf = NULL;
8020 }
8021 if (!(p = lock_user_string(arg1)))
8022 goto efault;
8023 ret = get_errno(utime(p, host_tbuf));
8024 unlock_user(p, arg1, 0);
8025 }
8026 break;
8027 #endif
8028 #ifdef TARGET_NR_utimes
8029 case TARGET_NR_utimes:
8030 {
8031 struct timeval *tvp, tv[2];
8032 if (arg2) {
8033 if (copy_from_user_timeval(&tv[0], arg2)
8034 || copy_from_user_timeval(&tv[1],
8035 arg2 + sizeof(struct target_timeval)))
8036 goto efault;
8037 tvp = tv;
8038 } else {
8039 tvp = NULL;
8040 }
8041 if (!(p = lock_user_string(arg1)))
8042 goto efault;
8043 ret = get_errno(utimes(p, tvp));
8044 unlock_user(p, arg1, 0);
8045 }
8046 break;
8047 #endif
8048 #if defined(TARGET_NR_futimesat)
8049 case TARGET_NR_futimesat:
8050 {
8051 struct timeval *tvp, tv[2];
8052 if (arg3) {
8053 if (copy_from_user_timeval(&tv[0], arg3)
8054 || copy_from_user_timeval(&tv[1],
8055 arg3 + sizeof(struct target_timeval)))
8056 goto efault;
8057 tvp = tv;
8058 } else {
8059 tvp = NULL;
8060 }
8061 if (!(p = lock_user_string(arg2)))
8062 goto efault;
8063 ret = get_errno(futimesat(arg1, path(p), tvp));
8064 unlock_user(p, arg2, 0);
8065 }
8066 break;
8067 #endif
8068 #ifdef TARGET_NR_stty
8069 case TARGET_NR_stty:
8070 goto unimplemented;
8071 #endif
8072 #ifdef TARGET_NR_gtty
8073 case TARGET_NR_gtty:
8074 goto unimplemented;
8075 #endif
8076 #ifdef TARGET_NR_access
8077 case TARGET_NR_access:
8078 if (!(p = lock_user_string(arg1)))
8079 goto efault;
8080 ret = get_errno(access(path(p), arg2));
8081 unlock_user(p, arg1, 0);
8082 break;
8083 #endif
8084 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
8085 case TARGET_NR_faccessat:
8086 if (!(p = lock_user_string(arg2)))
8087 goto efault;
8088 ret = get_errno(faccessat(arg1, p, arg3, 0));
8089 unlock_user(p, arg2, 0);
8090 break;
8091 #endif
8092 #ifdef TARGET_NR_nice /* not on alpha */
8093 case TARGET_NR_nice:
8094 ret = get_errno(nice(arg1));
8095 break;
8096 #endif
8097 #ifdef TARGET_NR_ftime
8098 case TARGET_NR_ftime:
8099 goto unimplemented;
8100 #endif
8101 case TARGET_NR_sync:
8102 sync();
8103 ret = 0;
8104 break;
8105 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
8106 case TARGET_NR_syncfs:
8107 ret = get_errno(syncfs(arg1));
8108 break;
8109 #endif
8110 case TARGET_NR_kill:
8111 ret = get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
8112 break;
8113 #ifdef TARGET_NR_rename
8114 case TARGET_NR_rename:
8115 {
8116 void *p2;
8117 p = lock_user_string(arg1);
8118 p2 = lock_user_string(arg2);
8119 if (!p || !p2)
8120 ret = -TARGET_EFAULT;
8121 else
8122 ret = get_errno(rename(p, p2));
8123 unlock_user(p2, arg2, 0);
8124 unlock_user(p, arg1, 0);
8125 }
8126 break;
8127 #endif
8128 #if defined(TARGET_NR_renameat)
8129 case TARGET_NR_renameat:
8130 {
8131 void *p2;
8132 p = lock_user_string(arg2);
8133 p2 = lock_user_string(arg4);
8134 if (!p || !p2)
8135 ret = -TARGET_EFAULT;
8136 else
8137 ret = get_errno(renameat(arg1, p, arg3, p2));
8138 unlock_user(p2, arg4, 0);
8139 unlock_user(p, arg2, 0);
8140 }
8141 break;
8142 #endif
8143 #ifdef TARGET_NR_mkdir
8144 case TARGET_NR_mkdir:
8145 if (!(p = lock_user_string(arg1)))
8146 goto efault;
8147 ret = get_errno(mkdir(p, arg2));
8148 unlock_user(p, arg1, 0);
8149 break;
8150 #endif
8151 #if defined(TARGET_NR_mkdirat)
8152 case TARGET_NR_mkdirat:
8153 if (!(p = lock_user_string(arg2)))
8154 goto efault;
8155 ret = get_errno(mkdirat(arg1, p, arg3));
8156 unlock_user(p, arg2, 0);
8157 break;
8158 #endif
8159 #ifdef TARGET_NR_rmdir
8160 case TARGET_NR_rmdir:
8161 if (!(p = lock_user_string(arg1)))
8162 goto efault;
8163 ret = get_errno(rmdir(p));
8164 unlock_user(p, arg1, 0);
8165 break;
8166 #endif
8167 case TARGET_NR_dup:
8168 ret = get_errno(dup(arg1));
8169 if (ret >= 0) {
8170 fd_trans_dup(arg1, ret);
8171 }
8172 break;
8173 #ifdef TARGET_NR_pipe
8174 case TARGET_NR_pipe:
8175 ret = do_pipe(cpu_env, arg1, 0, 0);
8176 break;
8177 #endif
8178 #ifdef TARGET_NR_pipe2
8179 case TARGET_NR_pipe2:
8180 ret = do_pipe(cpu_env, arg1,
8181 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
8182 break;
8183 #endif
8184 case TARGET_NR_times:
8185 {
8186 struct target_tms *tmsp;
8187 struct tms tms;
8188 ret = get_errno(times(&tms));
8189 if (arg1) {
8190 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
8191 if (!tmsp)
8192 goto efault;
8193 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
8194 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
8195 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
8196 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
8197 }
8198 if (!is_error(ret))
8199 ret = host_to_target_clock_t(ret);
8200 }
8201 break;
8202 #ifdef TARGET_NR_prof
8203 case TARGET_NR_prof:
8204 goto unimplemented;
8205 #endif
8206 #ifdef TARGET_NR_signal
8207 case TARGET_NR_signal:
8208 goto unimplemented;
8209 #endif
8210 case TARGET_NR_acct:
8211 if (arg1 == 0) {
8212 ret = get_errno(acct(NULL));
8213 } else {
8214 if (!(p = lock_user_string(arg1)))
8215 goto efault;
8216 ret = get_errno(acct(path(p)));
8217 unlock_user(p, arg1, 0);
8218 }
8219 break;
8220 #ifdef TARGET_NR_umount2
8221 case TARGET_NR_umount2:
8222 if (!(p = lock_user_string(arg1)))
8223 goto efault;
8224 ret = get_errno(umount2(p, arg2));
8225 unlock_user(p, arg1, 0);
8226 break;
8227 #endif
8228 #ifdef TARGET_NR_lock
8229 case TARGET_NR_lock:
8230 goto unimplemented;
8231 #endif
8232 case TARGET_NR_ioctl:
8233 ret = do_ioctl(arg1, arg2, arg3);
8234 break;
8235 case TARGET_NR_fcntl:
8236 ret = do_fcntl(arg1, arg2, arg3);
8237 break;
8238 #ifdef TARGET_NR_mpx
8239 case TARGET_NR_mpx:
8240 goto unimplemented;
8241 #endif
8242 case TARGET_NR_setpgid:
8243 ret = get_errno(setpgid(arg1, arg2));
8244 break;
8245 #ifdef TARGET_NR_ulimit
8246 case TARGET_NR_ulimit:
8247 goto unimplemented;
8248 #endif
8249 #ifdef TARGET_NR_oldolduname
8250 case TARGET_NR_oldolduname:
8251 goto unimplemented;
8252 #endif
8253 case TARGET_NR_umask:
8254 ret = get_errno(umask(arg1));
8255 break;
8256 case TARGET_NR_chroot:
8257 if (!(p = lock_user_string(arg1)))
8258 goto efault;
8259 ret = get_errno(chroot(p));
8260 unlock_user(p, arg1, 0);
8261 break;
8262 #ifdef TARGET_NR_ustat
8263 case TARGET_NR_ustat:
8264 goto unimplemented;
8265 #endif
8266 #ifdef TARGET_NR_dup2
8267 case TARGET_NR_dup2:
8268 ret = get_errno(dup2(arg1, arg2));
8269 if (ret >= 0) {
8270 fd_trans_dup(arg1, arg2);
8271 }
8272 break;
8273 #endif
8274 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
8275 case TARGET_NR_dup3:
8276 ret = get_errno(dup3(arg1, arg2, arg3));
8277 if (ret >= 0) {
8278 fd_trans_dup(arg1, arg2);
8279 }
8280 break;
8281 #endif
8282 #ifdef TARGET_NR_getppid /* not on alpha */
8283 case TARGET_NR_getppid:
8284 ret = get_errno(getppid());
8285 break;
8286 #endif
8287 #ifdef TARGET_NR_getpgrp
8288 case TARGET_NR_getpgrp:
8289 ret = get_errno(getpgrp());
8290 break;
8291 #endif
8292 case TARGET_NR_setsid:
8293 ret = get_errno(setsid());
8294 break;
8295 #ifdef TARGET_NR_sigaction
8296 case TARGET_NR_sigaction:
8297 {
8298 #if defined(TARGET_ALPHA)
8299 struct target_sigaction act, oact, *pact = 0;
8300 struct target_old_sigaction *old_act;
8301 if (arg2) {
8302 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8303 goto efault;
8304 act._sa_handler = old_act->_sa_handler;
8305 target_siginitset(&act.sa_mask, old_act->sa_mask);
8306 act.sa_flags = old_act->sa_flags;
8307 act.sa_restorer = 0;
8308 unlock_user_struct(old_act, arg2, 0);
8309 pact = &act;
8310 }
8311 ret = get_errno(do_sigaction(arg1, pact, &oact));
8312 if (!is_error(ret) && arg3) {
8313 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8314 goto efault;
8315 old_act->_sa_handler = oact._sa_handler;
8316 old_act->sa_mask = oact.sa_mask.sig[0];
8317 old_act->sa_flags = oact.sa_flags;
8318 unlock_user_struct(old_act, arg3, 1);
8319 }
8320 #elif defined(TARGET_MIPS)
8321 struct target_sigaction act, oact, *pact, *old_act;
8322
8323 if (arg2) {
8324 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8325 goto efault;
8326 act._sa_handler = old_act->_sa_handler;
8327 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
8328 act.sa_flags = old_act->sa_flags;
8329 unlock_user_struct(old_act, arg2, 0);
8330 pact = &act;
8331 } else {
8332 pact = NULL;
8333 }
8334
8335 ret = get_errno(do_sigaction(arg1, pact, &oact));
8336
8337 if (!is_error(ret) && arg3) {
8338 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8339 goto efault;
8340 old_act->_sa_handler = oact._sa_handler;
8341 old_act->sa_flags = oact.sa_flags;
8342 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
8343 old_act->sa_mask.sig[1] = 0;
8344 old_act->sa_mask.sig[2] = 0;
8345 old_act->sa_mask.sig[3] = 0;
8346 unlock_user_struct(old_act, arg3, 1);
8347 }
8348 #else
8349 struct target_old_sigaction *old_act;
8350 struct target_sigaction act, oact, *pact;
8351 if (arg2) {
8352 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8353 goto efault;
8354 act._sa_handler = old_act->_sa_handler;
8355 target_siginitset(&act.sa_mask, old_act->sa_mask);
8356 act.sa_flags = old_act->sa_flags;
8357 act.sa_restorer = old_act->sa_restorer;
8358 unlock_user_struct(old_act, arg2, 0);
8359 pact = &act;
8360 } else {
8361 pact = NULL;
8362 }
8363 ret = get_errno(do_sigaction(arg1, pact, &oact));
8364 if (!is_error(ret) && arg3) {
8365 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8366 goto efault;
8367 old_act->_sa_handler = oact._sa_handler;
8368 old_act->sa_mask = oact.sa_mask.sig[0];
8369 old_act->sa_flags = oact.sa_flags;
8370 old_act->sa_restorer = oact.sa_restorer;
8371 unlock_user_struct(old_act, arg3, 1);
8372 }
8373 #endif
8374 }
8375 break;
8376 #endif
8377 case TARGET_NR_rt_sigaction:
8378 {
8379 #if defined(TARGET_ALPHA)
8380 struct target_sigaction act, oact, *pact = 0;
8381 struct target_rt_sigaction *rt_act;
8382
8383 if (arg4 != sizeof(target_sigset_t)) {
8384 ret = -TARGET_EINVAL;
8385 break;
8386 }
8387 if (arg2) {
8388 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
8389 goto efault;
8390 act._sa_handler = rt_act->_sa_handler;
8391 act.sa_mask = rt_act->sa_mask;
8392 act.sa_flags = rt_act->sa_flags;
8393 act.sa_restorer = arg5;
8394 unlock_user_struct(rt_act, arg2, 0);
8395 pact = &act;
8396 }
8397 ret = get_errno(do_sigaction(arg1, pact, &oact));
8398 if (!is_error(ret) && arg3) {
8399 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
8400 goto efault;
8401 rt_act->_sa_handler = oact._sa_handler;
8402 rt_act->sa_mask = oact.sa_mask;
8403 rt_act->sa_flags = oact.sa_flags;
8404 unlock_user_struct(rt_act, arg3, 1);
8405 }
8406 #else
8407 struct target_sigaction *act;
8408 struct target_sigaction *oact;
8409
8410 if (arg4 != sizeof(target_sigset_t)) {
8411 ret = -TARGET_EINVAL;
8412 break;
8413 }
8414 if (arg2) {
8415 if (!lock_user_struct(VERIFY_READ, act, arg2, 1))
8416 goto efault;
8417 } else
8418 act = NULL;
8419 if (arg3) {
8420 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
8421 ret = -TARGET_EFAULT;
8422 goto rt_sigaction_fail;
8423 }
8424 } else
8425 oact = NULL;
8426 ret = get_errno(do_sigaction(arg1, act, oact));
8427 rt_sigaction_fail:
8428 if (act)
8429 unlock_user_struct(act, arg2, 0);
8430 if (oact)
8431 unlock_user_struct(oact, arg3, 1);
8432 #endif
8433 }
8434 break;
8435 #ifdef TARGET_NR_sgetmask /* not on alpha */
8436 case TARGET_NR_sgetmask:
8437 {
8438 sigset_t cur_set;
8439 abi_ulong target_set;
8440 ret = do_sigprocmask(0, NULL, &cur_set);
8441 if (!ret) {
8442 host_to_target_old_sigset(&target_set, &cur_set);
8443 ret = target_set;
8444 }
8445 }
8446 break;
8447 #endif
8448 #ifdef TARGET_NR_ssetmask /* not on alpha */
8449 case TARGET_NR_ssetmask:
8450 {
8451 sigset_t set, oset, cur_set;
8452 abi_ulong target_set = arg1;
8453 /* We only have one word of the new mask so we must read
8454 * the rest of it with do_sigprocmask() and OR in this word.
8455 * We are guaranteed that a do_sigprocmask() that only queries
8456 * the signal mask will not fail.
8457 */
8458 ret = do_sigprocmask(0, NULL, &cur_set);
8459 assert(!ret);
8460 target_to_host_old_sigset(&set, &target_set);
8461 sigorset(&set, &set, &cur_set);
8462 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
8463 if (!ret) {
8464 host_to_target_old_sigset(&target_set, &oset);
8465 ret = target_set;
8466 }
8467 }
8468 break;
8469 #endif
8470 #ifdef TARGET_NR_sigprocmask
8471 case TARGET_NR_sigprocmask:
8472 {
8473 #if defined(TARGET_ALPHA)
8474 sigset_t set, oldset;
8475 abi_ulong mask;
8476 int how;
8477
8478 switch (arg1) {
8479 case TARGET_SIG_BLOCK:
8480 how = SIG_BLOCK;
8481 break;
8482 case TARGET_SIG_UNBLOCK:
8483 how = SIG_UNBLOCK;
8484 break;
8485 case TARGET_SIG_SETMASK:
8486 how = SIG_SETMASK;
8487 break;
8488 default:
8489 ret = -TARGET_EINVAL;
8490 goto fail;
8491 }
8492 mask = arg2;
8493 target_to_host_old_sigset(&set, &mask);
8494
8495 ret = do_sigprocmask(how, &set, &oldset);
8496 if (!is_error(ret)) {
8497 host_to_target_old_sigset(&mask, &oldset);
8498 ret = mask;
8499 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
8500 }
8501 #else
8502 sigset_t set, oldset, *set_ptr;
8503 int how;
8504
8505 if (arg2) {
8506 switch (arg1) {
8507 case TARGET_SIG_BLOCK:
8508 how = SIG_BLOCK;
8509 break;
8510 case TARGET_SIG_UNBLOCK:
8511 how = SIG_UNBLOCK;
8512 break;
8513 case TARGET_SIG_SETMASK:
8514 how = SIG_SETMASK;
8515 break;
8516 default:
8517 ret = -TARGET_EINVAL;
8518 goto fail;
8519 }
8520 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8521 goto efault;
8522 target_to_host_old_sigset(&set, p);
8523 unlock_user(p, arg2, 0);
8524 set_ptr = &set;
8525 } else {
8526 how = 0;
8527 set_ptr = NULL;
8528 }
8529 ret = do_sigprocmask(how, set_ptr, &oldset);
8530 if (!is_error(ret) && arg3) {
8531 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8532 goto efault;
8533 host_to_target_old_sigset(p, &oldset);
8534 unlock_user(p, arg3, sizeof(target_sigset_t));
8535 }
8536 #endif
8537 }
8538 break;
8539 #endif
8540 case TARGET_NR_rt_sigprocmask:
8541 {
8542 int how = arg1;
8543 sigset_t set, oldset, *set_ptr;
8544
8545 if (arg4 != sizeof(target_sigset_t)) {
8546 ret = -TARGET_EINVAL;
8547 break;
8548 }
8549
8550 if (arg2) {
8551 switch(how) {
8552 case TARGET_SIG_BLOCK:
8553 how = SIG_BLOCK;
8554 break;
8555 case TARGET_SIG_UNBLOCK:
8556 how = SIG_UNBLOCK;
8557 break;
8558 case TARGET_SIG_SETMASK:
8559 how = SIG_SETMASK;
8560 break;
8561 default:
8562 ret = -TARGET_EINVAL;
8563 goto fail;
8564 }
8565 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8566 goto efault;
8567 target_to_host_sigset(&set, p);
8568 unlock_user(p, arg2, 0);
8569 set_ptr = &set;
8570 } else {
8571 how = 0;
8572 set_ptr = NULL;
8573 }
8574 ret = do_sigprocmask(how, set_ptr, &oldset);
8575 if (!is_error(ret) && arg3) {
8576 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8577 goto efault;
8578 host_to_target_sigset(p, &oldset);
8579 unlock_user(p, arg3, sizeof(target_sigset_t));
8580 }
8581 }
8582 break;
8583 #ifdef TARGET_NR_sigpending
8584 case TARGET_NR_sigpending:
8585 {
8586 sigset_t set;
8587 ret = get_errno(sigpending(&set));
8588 if (!is_error(ret)) {
8589 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8590 goto efault;
8591 host_to_target_old_sigset(p, &set);
8592 unlock_user(p, arg1, sizeof(target_sigset_t));
8593 }
8594 }
8595 break;
8596 #endif
8597 case TARGET_NR_rt_sigpending:
8598 {
8599 sigset_t set;
8600
8601 /* Yes, this check is >, not != like most. We follow the kernel's
8602 * logic and it does it like this because it implements
8603 * NR_sigpending through the same code path, and in that case
8604 * the old_sigset_t is smaller in size.
8605 */
8606 if (arg2 > sizeof(target_sigset_t)) {
8607 ret = -TARGET_EINVAL;
8608 break;
8609 }
8610
8611 ret = get_errno(sigpending(&set));
8612 if (!is_error(ret)) {
8613 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8614 goto efault;
8615 host_to_target_sigset(p, &set);
8616 unlock_user(p, arg1, sizeof(target_sigset_t));
8617 }
8618 }
8619 break;
8620 #ifdef TARGET_NR_sigsuspend
8621 case TARGET_NR_sigsuspend:
8622 {
8623 TaskState *ts = cpu->opaque;
8624 #if defined(TARGET_ALPHA)
8625 abi_ulong mask = arg1;
8626 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
8627 #else
8628 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8629 goto efault;
8630 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
8631 unlock_user(p, arg1, 0);
8632 #endif
8633 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8634 SIGSET_T_SIZE));
8635 if (ret != -TARGET_ERESTARTSYS) {
8636 ts->in_sigsuspend = 1;
8637 }
8638 }
8639 break;
8640 #endif
8641 case TARGET_NR_rt_sigsuspend:
8642 {
8643 TaskState *ts = cpu->opaque;
8644
8645 if (arg2 != sizeof(target_sigset_t)) {
8646 ret = -TARGET_EINVAL;
8647 break;
8648 }
8649 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8650 goto efault;
8651 target_to_host_sigset(&ts->sigsuspend_mask, p);
8652 unlock_user(p, arg1, 0);
8653 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8654 SIGSET_T_SIZE));
8655 if (ret != -TARGET_ERESTARTSYS) {
8656 ts->in_sigsuspend = 1;
8657 }
8658 }
8659 break;
8660 case TARGET_NR_rt_sigtimedwait:
8661 {
8662 sigset_t set;
8663 struct timespec uts, *puts;
8664 siginfo_t uinfo;
8665
8666 if (arg4 != sizeof(target_sigset_t)) {
8667 ret = -TARGET_EINVAL;
8668 break;
8669 }
8670
8671 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8672 goto efault;
8673 target_to_host_sigset(&set, p);
8674 unlock_user(p, arg1, 0);
8675 if (arg3) {
8676 puts = &uts;
8677 target_to_host_timespec(puts, arg3);
8678 } else {
8679 puts = NULL;
8680 }
8681 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
8682 SIGSET_T_SIZE));
8683 if (!is_error(ret)) {
8684 if (arg2) {
8685 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
8686 0);
8687 if (!p) {
8688 goto efault;
8689 }
8690 host_to_target_siginfo(p, &uinfo);
8691 unlock_user(p, arg2, sizeof(target_siginfo_t));
8692 }
8693 ret = host_to_target_signal(ret);
8694 }
8695 }
8696 break;
8697 case TARGET_NR_rt_sigqueueinfo:
8698 {
8699 siginfo_t uinfo;
8700
8701 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8702 if (!p) {
8703 goto efault;
8704 }
8705 target_to_host_siginfo(&uinfo, p);
8706 unlock_user(p, arg1, 0);
8707 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
8708 }
8709 break;
8710 #ifdef TARGET_NR_sigreturn
8711 case TARGET_NR_sigreturn:
8712 if (block_signals()) {
8713 ret = -TARGET_ERESTARTSYS;
8714 } else {
8715 ret = do_sigreturn(cpu_env);
8716 }
8717 break;
8718 #endif
8719 case TARGET_NR_rt_sigreturn:
8720 if (block_signals()) {
8721 ret = -TARGET_ERESTARTSYS;
8722 } else {
8723 ret = do_rt_sigreturn(cpu_env);
8724 }
8725 break;
8726 case TARGET_NR_sethostname:
8727 if (!(p = lock_user_string(arg1)))
8728 goto efault;
8729 ret = get_errno(sethostname(p, arg2));
8730 unlock_user(p, arg1, 0);
8731 break;
8732 case TARGET_NR_setrlimit:
8733 {
8734 int resource = target_to_host_resource(arg1);
8735 struct target_rlimit *target_rlim;
8736 struct rlimit rlim;
8737 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
8738 goto efault;
8739 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
8740 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
8741 unlock_user_struct(target_rlim, arg2, 0);
8742 ret = get_errno(setrlimit(resource, &rlim));
8743 }
8744 break;
8745 case TARGET_NR_getrlimit:
8746 {
8747 int resource = target_to_host_resource(arg1);
8748 struct target_rlimit *target_rlim;
8749 struct rlimit rlim;
8750
8751 ret = get_errno(getrlimit(resource, &rlim));
8752 if (!is_error(ret)) {
8753 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
8754 goto efault;
8755 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
8756 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
8757 unlock_user_struct(target_rlim, arg2, 1);
8758 }
8759 }
8760 break;
8761 case TARGET_NR_getrusage:
8762 {
8763 struct rusage rusage;
8764 ret = get_errno(getrusage(arg1, &rusage));
8765 if (!is_error(ret)) {
8766 ret = host_to_target_rusage(arg2, &rusage);
8767 }
8768 }
8769 break;
8770 case TARGET_NR_gettimeofday:
8771 {
8772 struct timeval tv;
8773 ret = get_errno(gettimeofday(&tv, NULL));
8774 if (!is_error(ret)) {
8775 if (copy_to_user_timeval(arg1, &tv))
8776 goto efault;
8777 }
8778 }
8779 break;
8780 case TARGET_NR_settimeofday:
8781 {
8782 struct timeval tv, *ptv = NULL;
8783 struct timezone tz, *ptz = NULL;
8784
8785 if (arg1) {
8786 if (copy_from_user_timeval(&tv, arg1)) {
8787 goto efault;
8788 }
8789 ptv = &tv;
8790 }
8791
8792 if (arg2) {
8793 if (copy_from_user_timezone(&tz, arg2)) {
8794 goto efault;
8795 }
8796 ptz = &tz;
8797 }
8798
8799 ret = get_errno(settimeofday(ptv, ptz));
8800 }
8801 break;
8802 #if defined(TARGET_NR_select)
8803 case TARGET_NR_select:
8804 #if defined(TARGET_WANT_NI_OLD_SELECT)
8805 /* some architectures used to have old_select here
8806 * but now ENOSYS it.
8807 */
8808 ret = -TARGET_ENOSYS;
8809 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
8810 ret = do_old_select(arg1);
8811 #else
8812 ret = do_select(arg1, arg2, arg3, arg4, arg5);
8813 #endif
8814 break;
8815 #endif
8816 #ifdef TARGET_NR_pselect6
8817 case TARGET_NR_pselect6:
8818 {
8819 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
8820 fd_set rfds, wfds, efds;
8821 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
8822 struct timespec ts, *ts_ptr;
8823
8824 /*
8825 * The 6th arg is actually two args smashed together,
8826 * so we cannot use the C library.
8827 */
8828 sigset_t set;
8829 struct {
8830 sigset_t *set;
8831 size_t size;
8832 } sig, *sig_ptr;
8833
8834 abi_ulong arg_sigset, arg_sigsize, *arg7;
8835 target_sigset_t *target_sigset;
8836
8837 n = arg1;
8838 rfd_addr = arg2;
8839 wfd_addr = arg3;
8840 efd_addr = arg4;
8841 ts_addr = arg5;
8842
8843 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
8844 if (ret) {
8845 goto fail;
8846 }
8847 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
8848 if (ret) {
8849 goto fail;
8850 }
8851 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
8852 if (ret) {
8853 goto fail;
8854 }
8855
8856 /*
8857 * This takes a timespec, and not a timeval, so we cannot
8858 * use the do_select() helper ...
8859 */
8860 if (ts_addr) {
8861 if (target_to_host_timespec(&ts, ts_addr)) {
8862 goto efault;
8863 }
8864 ts_ptr = &ts;
8865 } else {
8866 ts_ptr = NULL;
8867 }
8868
8869 /* Extract the two packed args for the sigset */
8870 if (arg6) {
8871 sig_ptr = &sig;
8872 sig.size = SIGSET_T_SIZE;
8873
8874 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
8875 if (!arg7) {
8876 goto efault;
8877 }
8878 arg_sigset = tswapal(arg7[0]);
8879 arg_sigsize = tswapal(arg7[1]);
8880 unlock_user(arg7, arg6, 0);
8881
8882 if (arg_sigset) {
8883 sig.set = &set;
8884 if (arg_sigsize != sizeof(*target_sigset)) {
8885 /* Like the kernel, we enforce correct size sigsets */
8886 ret = -TARGET_EINVAL;
8887 goto fail;
8888 }
8889 target_sigset = lock_user(VERIFY_READ, arg_sigset,
8890 sizeof(*target_sigset), 1);
8891 if (!target_sigset) {
8892 goto efault;
8893 }
8894 target_to_host_sigset(&set, target_sigset);
8895 unlock_user(target_sigset, arg_sigset, 0);
8896 } else {
8897 sig.set = NULL;
8898 }
8899 } else {
8900 sig_ptr = NULL;
8901 }
8902
8903 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
8904 ts_ptr, sig_ptr));
8905
8906 if (!is_error(ret)) {
8907 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
8908 goto efault;
8909 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
8910 goto efault;
8911 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
8912 goto efault;
8913
8914 if (ts_addr && host_to_target_timespec(ts_addr, &ts))
8915 goto efault;
8916 }
8917 }
8918 break;
8919 #endif
8920 #ifdef TARGET_NR_symlink
8921 case TARGET_NR_symlink:
8922 {
8923 void *p2;
8924 p = lock_user_string(arg1);
8925 p2 = lock_user_string(arg2);
8926 if (!p || !p2)
8927 ret = -TARGET_EFAULT;
8928 else
8929 ret = get_errno(symlink(p, p2));
8930 unlock_user(p2, arg2, 0);
8931 unlock_user(p, arg1, 0);
8932 }
8933 break;
8934 #endif
8935 #if defined(TARGET_NR_symlinkat)
8936 case TARGET_NR_symlinkat:
8937 {
8938 void *p2;
8939 p = lock_user_string(arg1);
8940 p2 = lock_user_string(arg3);
8941 if (!p || !p2)
8942 ret = -TARGET_EFAULT;
8943 else
8944 ret = get_errno(symlinkat(p, arg2, p2));
8945 unlock_user(p2, arg3, 0);
8946 unlock_user(p, arg1, 0);
8947 }
8948 break;
8949 #endif
8950 #ifdef TARGET_NR_oldlstat
8951 case TARGET_NR_oldlstat:
8952 goto unimplemented;
8953 #endif
8954 #ifdef TARGET_NR_readlink
8955 case TARGET_NR_readlink:
8956 {
8957 void *p2;
8958 p = lock_user_string(arg1);
8959 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
8960 if (!p || !p2) {
8961 ret = -TARGET_EFAULT;
8962 } else if (!arg3) {
8963 /* Short circuit this for the magic exe check. */
8964 ret = -TARGET_EINVAL;
8965 } else if (is_proc_myself((const char *)p, "exe")) {
8966 char real[PATH_MAX], *temp;
8967 temp = realpath(exec_path, real);
8968 /* Return value is # of bytes that we wrote to the buffer. */
8969 if (temp == NULL) {
8970 ret = get_errno(-1);
8971 } else {
8972 /* Don't worry about sign mismatch as earlier mapping
8973 * logic would have thrown a bad address error. */
8974 ret = MIN(strlen(real), arg3);
8975 /* We cannot NUL terminate the string. */
8976 memcpy(p2, real, ret);
8977 }
8978 } else {
8979 ret = get_errno(readlink(path(p), p2, arg3));
8980 }
8981 unlock_user(p2, arg2, ret);
8982 unlock_user(p, arg1, 0);
8983 }
8984 break;
8985 #endif
8986 #if defined(TARGET_NR_readlinkat)
8987 case TARGET_NR_readlinkat:
8988 {
8989 void *p2;
8990 p = lock_user_string(arg2);
8991 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
8992 if (!p || !p2) {
8993 ret = -TARGET_EFAULT;
8994 } else if (is_proc_myself((const char *)p, "exe")) {
8995 char real[PATH_MAX], *temp;
8996 temp = realpath(exec_path, real);
8997 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
8998 snprintf((char *)p2, arg4, "%s", real);
8999 } else {
9000 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
9001 }
9002 unlock_user(p2, arg3, ret);
9003 unlock_user(p, arg2, 0);
9004 }
9005 break;
9006 #endif
9007 #ifdef TARGET_NR_uselib
9008 case TARGET_NR_uselib:
9009 goto unimplemented;
9010 #endif
9011 #ifdef TARGET_NR_swapon
9012 case TARGET_NR_swapon:
9013 if (!(p = lock_user_string(arg1)))
9014 goto efault;
9015 ret = get_errno(swapon(p, arg2));
9016 unlock_user(p, arg1, 0);
9017 break;
9018 #endif
9019 case TARGET_NR_reboot:
9020 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
9021 /* arg4 must be ignored in all other cases */
9022 p = lock_user_string(arg4);
9023 if (!p) {
9024 goto efault;
9025 }
9026 ret = get_errno(reboot(arg1, arg2, arg3, p));
9027 unlock_user(p, arg4, 0);
9028 } else {
9029 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
9030 }
9031 break;
9032 #ifdef TARGET_NR_readdir
9033 case TARGET_NR_readdir:
9034 goto unimplemented;
9035 #endif
9036 #ifdef TARGET_NR_mmap
9037 case TARGET_NR_mmap:
9038 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
9039 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
9040 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
9041 || defined(TARGET_S390X)
9042 {
9043 abi_ulong *v;
9044 abi_ulong v1, v2, v3, v4, v5, v6;
9045 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
9046 goto efault;
9047 v1 = tswapal(v[0]);
9048 v2 = tswapal(v[1]);
9049 v3 = tswapal(v[2]);
9050 v4 = tswapal(v[3]);
9051 v5 = tswapal(v[4]);
9052 v6 = tswapal(v[5]);
9053 unlock_user(v, arg1, 0);
9054 ret = get_errno(target_mmap(v1, v2, v3,
9055 target_to_host_bitmask(v4, mmap_flags_tbl),
9056 v5, v6));
9057 }
9058 #else
9059 ret = get_errno(target_mmap(arg1, arg2, arg3,
9060 target_to_host_bitmask(arg4, mmap_flags_tbl),
9061 arg5,
9062 arg6));
9063 #endif
9064 break;
9065 #endif
9066 #ifdef TARGET_NR_mmap2
9067 case TARGET_NR_mmap2:
9068 #ifndef MMAP_SHIFT
9069 #define MMAP_SHIFT 12
9070 #endif
9071 ret = get_errno(target_mmap(arg1, arg2, arg3,
9072 target_to_host_bitmask(arg4, mmap_flags_tbl),
9073 arg5,
9074 arg6 << MMAP_SHIFT));
9075 break;
9076 #endif
9077 case TARGET_NR_munmap:
9078 ret = get_errno(target_munmap(arg1, arg2));
9079 break;
9080 case TARGET_NR_mprotect:
9081 {
9082 TaskState *ts = cpu->opaque;
9083 /* Special hack to detect libc making the stack executable. */
9084 if ((arg3 & PROT_GROWSDOWN)
9085 && arg1 >= ts->info->stack_limit
9086 && arg1 <= ts->info->start_stack) {
9087 arg3 &= ~PROT_GROWSDOWN;
9088 arg2 = arg2 + arg1 - ts->info->stack_limit;
9089 arg1 = ts->info->stack_limit;
9090 }
9091 }
9092 ret = get_errno(target_mprotect(arg1, arg2, arg3));
9093 break;
9094 #ifdef TARGET_NR_mremap
9095 case TARGET_NR_mremap:
9096 ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
9097 break;
9098 #endif
9099 /* ??? msync/mlock/munlock are broken for softmmu. */
9100 #ifdef TARGET_NR_msync
9101 case TARGET_NR_msync:
9102 ret = get_errno(msync(g2h(arg1), arg2, arg3));
9103 break;
9104 #endif
9105 #ifdef TARGET_NR_mlock
9106 case TARGET_NR_mlock:
9107 ret = get_errno(mlock(g2h(arg1), arg2));
9108 break;
9109 #endif
9110 #ifdef TARGET_NR_munlock
9111 case TARGET_NR_munlock:
9112 ret = get_errno(munlock(g2h(arg1), arg2));
9113 break;
9114 #endif
9115 #ifdef TARGET_NR_mlockall
9116 case TARGET_NR_mlockall:
9117 ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
9118 break;
9119 #endif
9120 #ifdef TARGET_NR_munlockall
9121 case TARGET_NR_munlockall:
9122 ret = get_errno(munlockall());
9123 break;
9124 #endif
9125 case TARGET_NR_truncate:
9126 if (!(p = lock_user_string(arg1)))
9127 goto efault;
9128 ret = get_errno(truncate(p, arg2));
9129 unlock_user(p, arg1, 0);
9130 break;
9131 case TARGET_NR_ftruncate:
9132 ret = get_errno(ftruncate(arg1, arg2));
9133 break;
9134 case TARGET_NR_fchmod:
9135 ret = get_errno(fchmod(arg1, arg2));
9136 break;
9137 #if defined(TARGET_NR_fchmodat)
9138 case TARGET_NR_fchmodat:
9139 if (!(p = lock_user_string(arg2)))
9140 goto efault;
9141 ret = get_errno(fchmodat(arg1, p, arg3, 0));
9142 unlock_user(p, arg2, 0);
9143 break;
9144 #endif
9145 case TARGET_NR_getpriority:
9146 /* Note that negative values are valid for getpriority, so we must
9147 differentiate based on errno settings. */
9148 errno = 0;
9149 ret = getpriority(arg1, arg2);
9150 if (ret == -1 && errno != 0) {
9151 ret = -host_to_target_errno(errno);
9152 break;
9153 }
9154 #ifdef TARGET_ALPHA
9155 /* Return value is the unbiased priority. Signal no error. */
9156 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
9157 #else
9158 /* Return value is a biased priority to avoid negative numbers. */
9159 ret = 20 - ret;
9160 #endif
9161 break;
9162 case TARGET_NR_setpriority:
9163 ret = get_errno(setpriority(arg1, arg2, arg3));
9164 break;
9165 #ifdef TARGET_NR_profil
9166 case TARGET_NR_profil:
9167 goto unimplemented;
9168 #endif
9169 case TARGET_NR_statfs:
9170 if (!(p = lock_user_string(arg1)))
9171 goto efault;
9172 ret = get_errno(statfs(path(p), &stfs));
9173 unlock_user(p, arg1, 0);
9174 convert_statfs:
9175 if (!is_error(ret)) {
9176 struct target_statfs *target_stfs;
9177
9178 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
9179 goto efault;
9180 __put_user(stfs.f_type, &target_stfs->f_type);
9181 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9182 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9183 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9184 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9185 __put_user(stfs.f_files, &target_stfs->f_files);
9186 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9187 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9188 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9189 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9190 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9191 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9192 unlock_user_struct(target_stfs, arg2, 1);
9193 }
9194 break;
9195 case TARGET_NR_fstatfs:
9196 ret = get_errno(fstatfs(arg1, &stfs));
9197 goto convert_statfs;
9198 #ifdef TARGET_NR_statfs64
9199 case TARGET_NR_statfs64:
9200 if (!(p = lock_user_string(arg1)))
9201 goto efault;
9202 ret = get_errno(statfs(path(p), &stfs));
9203 unlock_user(p, arg1, 0);
9204 convert_statfs64:
9205 if (!is_error(ret)) {
9206 struct target_statfs64 *target_stfs;
9207
9208 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
9209 goto efault;
9210 __put_user(stfs.f_type, &target_stfs->f_type);
9211 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9212 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9213 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9214 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9215 __put_user(stfs.f_files, &target_stfs->f_files);
9216 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9217 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9218 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9219 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9220 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9221 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9222 unlock_user_struct(target_stfs, arg3, 1);
9223 }
9224 break;
9225 case TARGET_NR_fstatfs64:
9226 ret = get_errno(fstatfs(arg1, &stfs));
9227 goto convert_statfs64;
9228 #endif
9229 #ifdef TARGET_NR_ioperm
9230 case TARGET_NR_ioperm:
9231 goto unimplemented;
9232 #endif
9233 #ifdef TARGET_NR_socketcall
9234 case TARGET_NR_socketcall:
9235 ret = do_socketcall(arg1, arg2);
9236 break;
9237 #endif
9238 #ifdef TARGET_NR_accept
9239 case TARGET_NR_accept:
9240 ret = do_accept4(arg1, arg2, arg3, 0);
9241 break;
9242 #endif
9243 #ifdef TARGET_NR_accept4
9244 case TARGET_NR_accept4:
9245 ret = do_accept4(arg1, arg2, arg3, arg4);
9246 break;
9247 #endif
9248 #ifdef TARGET_NR_bind
9249 case TARGET_NR_bind:
9250 ret = do_bind(arg1, arg2, arg3);
9251 break;
9252 #endif
9253 #ifdef TARGET_NR_connect
9254 case TARGET_NR_connect:
9255 ret = do_connect(arg1, arg2, arg3);
9256 break;
9257 #endif
9258 #ifdef TARGET_NR_getpeername
9259 case TARGET_NR_getpeername:
9260 ret = do_getpeername(arg1, arg2, arg3);
9261 break;
9262 #endif
9263 #ifdef TARGET_NR_getsockname
9264 case TARGET_NR_getsockname:
9265 ret = do_getsockname(arg1, arg2, arg3);
9266 break;
9267 #endif
9268 #ifdef TARGET_NR_getsockopt
9269 case TARGET_NR_getsockopt:
9270 ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5);
9271 break;
9272 #endif
9273 #ifdef TARGET_NR_listen
9274 case TARGET_NR_listen:
9275 ret = get_errno(listen(arg1, arg2));
9276 break;
9277 #endif
9278 #ifdef TARGET_NR_recv
9279 case TARGET_NR_recv:
9280 ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
9281 break;
9282 #endif
9283 #ifdef TARGET_NR_recvfrom
9284 case TARGET_NR_recvfrom:
9285 ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
9286 break;
9287 #endif
9288 #ifdef TARGET_NR_recvmsg
9289 case TARGET_NR_recvmsg:
9290 ret = do_sendrecvmsg(arg1, arg2, arg3, 0);
9291 break;
9292 #endif
9293 #ifdef TARGET_NR_send
9294 case TARGET_NR_send:
9295 ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0);
9296 break;
9297 #endif
9298 #ifdef TARGET_NR_sendmsg
9299 case TARGET_NR_sendmsg:
9300 ret = do_sendrecvmsg(arg1, arg2, arg3, 1);
9301 break;
9302 #endif
9303 #ifdef TARGET_NR_sendmmsg
9304 case TARGET_NR_sendmmsg:
9305 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
9306 break;
9307 case TARGET_NR_recvmmsg:
9308 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
9309 break;
9310 #endif
9311 #ifdef TARGET_NR_sendto
9312 case TARGET_NR_sendto:
9313 ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
9314 break;
9315 #endif
9316 #ifdef TARGET_NR_shutdown
9317 case TARGET_NR_shutdown:
9318 ret = get_errno(shutdown(arg1, arg2));
9319 break;
9320 #endif
9321 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
9322 case TARGET_NR_getrandom:
9323 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
9324 if (!p) {
9325 goto efault;
9326 }
9327 ret = get_errno(getrandom(p, arg2, arg3));
9328 unlock_user(p, arg1, ret);
9329 break;
9330 #endif
9331 #ifdef TARGET_NR_socket
9332 case TARGET_NR_socket:
9333 ret = do_socket(arg1, arg2, arg3);
9334 fd_trans_unregister(ret);
9335 break;
9336 #endif
9337 #ifdef TARGET_NR_socketpair
9338 case TARGET_NR_socketpair:
9339 ret = do_socketpair(arg1, arg2, arg3, arg4);
9340 break;
9341 #endif
9342 #ifdef TARGET_NR_setsockopt
9343 case TARGET_NR_setsockopt:
9344 ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
9345 break;
9346 #endif
9347 #if defined(TARGET_NR_syslog)
9348 case TARGET_NR_syslog:
9349 {
9350 int len = arg2;
9351
9352 switch (arg1) {
9353 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
9354 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
9355 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
9356 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
9357 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
9358 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
9359 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
9360 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
9361 {
9362 ret = get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
9363 }
9364 break;
9365 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
9366 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
9367 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
9368 {
9369 ret = -TARGET_EINVAL;
9370 if (len < 0) {
9371 goto fail;
9372 }
9373 ret = 0;
9374 if (len == 0) {
9375 break;
9376 }
9377 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9378 if (!p) {
9379 ret = -TARGET_EFAULT;
9380 goto fail;
9381 }
9382 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
9383 unlock_user(p, arg2, arg3);
9384 }
9385 break;
9386 default:
9387 ret = -EINVAL;
9388 break;
9389 }
9390 }
9391 break;
9392 #endif
9393 case TARGET_NR_setitimer:
9394 {
9395 struct itimerval value, ovalue, *pvalue;
9396
9397 if (arg2) {
9398 pvalue = &value;
9399 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
9400 || copy_from_user_timeval(&pvalue->it_value,
9401 arg2 + sizeof(struct target_timeval)))
9402 goto efault;
9403 } else {
9404 pvalue = NULL;
9405 }
9406 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
9407 if (!is_error(ret) && arg3) {
9408 if (copy_to_user_timeval(arg3,
9409 &ovalue.it_interval)
9410 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
9411 &ovalue.it_value))
9412 goto efault;
9413 }
9414 }
9415 break;
9416 case TARGET_NR_getitimer:
9417 {
9418 struct itimerval value;
9419
9420 ret = get_errno(getitimer(arg1, &value));
9421 if (!is_error(ret) && arg2) {
9422 if (copy_to_user_timeval(arg2,
9423 &value.it_interval)
9424 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
9425 &value.it_value))
9426 goto efault;
9427 }
9428 }
9429 break;
9430 #ifdef TARGET_NR_stat
9431 case TARGET_NR_stat:
9432 if (!(p = lock_user_string(arg1)))
9433 goto efault;
9434 ret = get_errno(stat(path(p), &st));
9435 unlock_user(p, arg1, 0);
9436 goto do_stat;
9437 #endif
9438 #ifdef TARGET_NR_lstat
9439 case TARGET_NR_lstat:
9440 if (!(p = lock_user_string(arg1)))
9441 goto efault;
9442 ret = get_errno(lstat(path(p), &st));
9443 unlock_user(p, arg1, 0);
9444 goto do_stat;
9445 #endif
9446 case TARGET_NR_fstat:
9447 {
9448 ret = get_errno(fstat(arg1, &st));
9449 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
9450 do_stat:
9451 #endif
9452 if (!is_error(ret)) {
9453 struct target_stat *target_st;
9454
9455 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
9456 goto efault;
9457 memset(target_st, 0, sizeof(*target_st));
9458 __put_user(st.st_dev, &target_st->st_dev);
9459 __put_user(st.st_ino, &target_st->st_ino);
9460 __put_user(st.st_mode, &target_st->st_mode);
9461 __put_user(st.st_uid, &target_st->st_uid);
9462 __put_user(st.st_gid, &target_st->st_gid);
9463 __put_user(st.st_nlink, &target_st->st_nlink);
9464 __put_user(st.st_rdev, &target_st->st_rdev);
9465 __put_user(st.st_size, &target_st->st_size);
9466 __put_user(st.st_blksize, &target_st->st_blksize);
9467 __put_user(st.st_blocks, &target_st->st_blocks);
9468 __put_user(st.st_atime, &target_st->target_st_atime);
9469 __put_user(st.st_mtime, &target_st->target_st_mtime);
9470 __put_user(st.st_ctime, &target_st->target_st_ctime);
9471 unlock_user_struct(target_st, arg2, 1);
9472 }
9473 }
9474 break;
9475 #ifdef TARGET_NR_olduname
9476 case TARGET_NR_olduname:
9477 goto unimplemented;
9478 #endif
9479 #ifdef TARGET_NR_iopl
9480 case TARGET_NR_iopl:
9481 goto unimplemented;
9482 #endif
9483 case TARGET_NR_vhangup:
9484 ret = get_errno(vhangup());
9485 break;
9486 #ifdef TARGET_NR_idle
9487 case TARGET_NR_idle:
9488 goto unimplemented;
9489 #endif
9490 #ifdef TARGET_NR_syscall
9491 case TARGET_NR_syscall:
9492 ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
9493 arg6, arg7, arg8, 0);
9494 break;
9495 #endif
9496 case TARGET_NR_wait4:
9497 {
9498 int status;
9499 abi_long status_ptr = arg2;
9500 struct rusage rusage, *rusage_ptr;
9501 abi_ulong target_rusage = arg4;
9502 abi_long rusage_err;
9503 if (target_rusage)
9504 rusage_ptr = &rusage;
9505 else
9506 rusage_ptr = NULL;
9507 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
9508 if (!is_error(ret)) {
9509 if (status_ptr && ret) {
9510 status = host_to_target_waitstatus(status);
9511 if (put_user_s32(status, status_ptr))
9512 goto efault;
9513 }
9514 if (target_rusage) {
9515 rusage_err = host_to_target_rusage(target_rusage, &rusage);
9516 if (rusage_err) {
9517 ret = rusage_err;
9518 }
9519 }
9520 }
9521 }
9522 break;
9523 #ifdef TARGET_NR_swapoff
9524 case TARGET_NR_swapoff:
9525 if (!(p = lock_user_string(arg1)))
9526 goto efault;
9527 ret = get_errno(swapoff(p));
9528 unlock_user(p, arg1, 0);
9529 break;
9530 #endif
9531 case TARGET_NR_sysinfo:
9532 {
9533 struct target_sysinfo *target_value;
9534 struct sysinfo value;
9535 ret = get_errno(sysinfo(&value));
9536 if (!is_error(ret) && arg1)
9537 {
9538 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
9539 goto efault;
9540 __put_user(value.uptime, &target_value->uptime);
9541 __put_user(value.loads[0], &target_value->loads[0]);
9542 __put_user(value.loads[1], &target_value->loads[1]);
9543 __put_user(value.loads[2], &target_value->loads[2]);
9544 __put_user(value.totalram, &target_value->totalram);
9545 __put_user(value.freeram, &target_value->freeram);
9546 __put_user(value.sharedram, &target_value->sharedram);
9547 __put_user(value.bufferram, &target_value->bufferram);
9548 __put_user(value.totalswap, &target_value->totalswap);
9549 __put_user(value.freeswap, &target_value->freeswap);
9550 __put_user(value.procs, &target_value->procs);
9551 __put_user(value.totalhigh, &target_value->totalhigh);
9552 __put_user(value.freehigh, &target_value->freehigh);
9553 __put_user(value.mem_unit, &target_value->mem_unit);
9554 unlock_user_struct(target_value, arg1, 1);
9555 }
9556 }
9557 break;
9558 #ifdef TARGET_NR_ipc
9559 case TARGET_NR_ipc:
9560 ret = do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
9561 break;
9562 #endif
9563 #ifdef TARGET_NR_semget
9564 case TARGET_NR_semget:
9565 ret = get_errno(semget(arg1, arg2, arg3));
9566 break;
9567 #endif
9568 #ifdef TARGET_NR_semop
9569 case TARGET_NR_semop:
9570 ret = do_semop(arg1, arg2, arg3);
9571 break;
9572 #endif
9573 #ifdef TARGET_NR_semctl
9574 case TARGET_NR_semctl:
9575 ret = do_semctl(arg1, arg2, arg3, arg4);
9576 break;
9577 #endif
9578 #ifdef TARGET_NR_msgctl
9579 case TARGET_NR_msgctl:
9580 ret = do_msgctl(arg1, arg2, arg3);
9581 break;
9582 #endif
9583 #ifdef TARGET_NR_msgget
9584 case TARGET_NR_msgget:
9585 ret = get_errno(msgget(arg1, arg2));
9586 break;
9587 #endif
9588 #ifdef TARGET_NR_msgrcv
9589 case TARGET_NR_msgrcv:
9590 ret = do_msgrcv(arg1, arg2, arg3, arg4, arg5);
9591 break;
9592 #endif
9593 #ifdef TARGET_NR_msgsnd
9594 case TARGET_NR_msgsnd:
9595 ret = do_msgsnd(arg1, arg2, arg3, arg4);
9596 break;
9597 #endif
9598 #ifdef TARGET_NR_shmget
9599 case TARGET_NR_shmget:
9600 ret = get_errno(shmget(arg1, arg2, arg3));
9601 break;
9602 #endif
9603 #ifdef TARGET_NR_shmctl
9604 case TARGET_NR_shmctl:
9605 ret = do_shmctl(arg1, arg2, arg3);
9606 break;
9607 #endif
9608 #ifdef TARGET_NR_shmat
9609 case TARGET_NR_shmat:
9610 ret = do_shmat(cpu_env, arg1, arg2, arg3);
9611 break;
9612 #endif
9613 #ifdef TARGET_NR_shmdt
9614 case TARGET_NR_shmdt:
9615 ret = do_shmdt(arg1);
9616 break;
9617 #endif
9618 case TARGET_NR_fsync:
9619 ret = get_errno(fsync(arg1));
9620 break;
9621 case TARGET_NR_clone:
9622 /* Linux manages to have three different orderings for its
9623 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
9624 * match the kernel's CONFIG_CLONE_* settings.
9625 * Microblaze is further special in that it uses a sixth
9626 * implicit argument to clone for the TLS pointer.
9627 */
9628 #if defined(TARGET_MICROBLAZE)
9629 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
9630 #elif defined(TARGET_CLONE_BACKWARDS)
9631 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
9632 #elif defined(TARGET_CLONE_BACKWARDS2)
9633 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
9634 #else
9635 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
9636 #endif
9637 break;
9638 #ifdef __NR_exit_group
9639 /* new thread calls */
9640 case TARGET_NR_exit_group:
9641 #ifdef TARGET_GPROF
9642 _mcleanup();
9643 #endif
9644 gdb_exit(cpu_env, arg1);
9645 ret = get_errno(exit_group(arg1));
9646 break;
9647 #endif
9648 case TARGET_NR_setdomainname:
9649 if (!(p = lock_user_string(arg1)))
9650 goto efault;
9651 ret = get_errno(setdomainname(p, arg2));
9652 unlock_user(p, arg1, 0);
9653 break;
9654 case TARGET_NR_uname:
9655 /* no need to transcode because we use the linux syscall */
9656 {
9657 struct new_utsname * buf;
9658
9659 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
9660 goto efault;
9661 ret = get_errno(sys_uname(buf));
9662 if (!is_error(ret)) {
9663 /* Overwrite the native machine name with whatever is being
9664 emulated. */
9665 strcpy (buf->machine, cpu_to_uname_machine(cpu_env));
9666 /* Allow the user to override the reported release. */
9667 if (qemu_uname_release && *qemu_uname_release) {
9668 g_strlcpy(buf->release, qemu_uname_release,
9669 sizeof(buf->release));
9670 }
9671 }
9672 unlock_user_struct(buf, arg1, 1);
9673 }
9674 break;
9675 #ifdef TARGET_I386
9676 case TARGET_NR_modify_ldt:
9677 ret = do_modify_ldt(cpu_env, arg1, arg2, arg3);
9678 break;
9679 #if !defined(TARGET_X86_64)
9680 case TARGET_NR_vm86old:
9681 goto unimplemented;
9682 case TARGET_NR_vm86:
9683 ret = do_vm86(cpu_env, arg1, arg2);
9684 break;
9685 #endif
9686 #endif
9687 case TARGET_NR_adjtimex:
9688 {
9689 struct timex host_buf;
9690
9691 if (target_to_host_timex(&host_buf, arg1) != 0) {
9692 goto efault;
9693 }
9694 ret = get_errno(adjtimex(&host_buf));
9695 if (!is_error(ret)) {
9696 if (host_to_target_timex(arg1, &host_buf) != 0) {
9697 goto efault;
9698 }
9699 }
9700 }
9701 break;
9702 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
9703 case TARGET_NR_clock_adjtime:
9704 {
9705 struct timex htx, *phtx = &htx;
9706
9707 if (target_to_host_timex(phtx, arg2) != 0) {
9708 goto efault;
9709 }
9710 ret = get_errno(clock_adjtime(arg1, phtx));
9711 if (!is_error(ret) && phtx) {
9712 if (host_to_target_timex(arg2, phtx) != 0) {
9713 goto efault;
9714 }
9715 }
9716 }
9717 break;
9718 #endif
9719 #ifdef TARGET_NR_create_module
9720 case TARGET_NR_create_module:
9721 #endif
9722 case TARGET_NR_init_module:
9723 case TARGET_NR_delete_module:
9724 #ifdef TARGET_NR_get_kernel_syms
9725 case TARGET_NR_get_kernel_syms:
9726 #endif
9727 goto unimplemented;
9728 case TARGET_NR_quotactl:
9729 goto unimplemented;
9730 case TARGET_NR_getpgid:
9731 ret = get_errno(getpgid(arg1));
9732 break;
9733 case TARGET_NR_fchdir:
9734 ret = get_errno(fchdir(arg1));
9735 break;
9736 #ifdef TARGET_NR_bdflush /* not on x86_64 */
9737 case TARGET_NR_bdflush:
9738 goto unimplemented;
9739 #endif
9740 #ifdef TARGET_NR_sysfs
9741 case TARGET_NR_sysfs:
9742 goto unimplemented;
9743 #endif
9744 case TARGET_NR_personality:
9745 ret = get_errno(personality(arg1));
9746 break;
9747 #ifdef TARGET_NR_afs_syscall
9748 case TARGET_NR_afs_syscall:
9749 goto unimplemented;
9750 #endif
9751 #ifdef TARGET_NR__llseek /* Not on alpha */
9752 case TARGET_NR__llseek:
9753 {
9754 int64_t res;
9755 #if !defined(__NR_llseek)
9756 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
9757 if (res == -1) {
9758 ret = get_errno(res);
9759 } else {
9760 ret = 0;
9761 }
9762 #else
9763 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
9764 #endif
9765 if ((ret == 0) && put_user_s64(res, arg4)) {
9766 goto efault;
9767 }
9768 }
9769 break;
9770 #endif
9771 #ifdef TARGET_NR_getdents
9772 case TARGET_NR_getdents:
9773 #ifdef __NR_getdents
9774 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
9775 {
9776 struct target_dirent *target_dirp;
9777 struct linux_dirent *dirp;
9778 abi_long count = arg3;
9779
9780 dirp = g_try_malloc(count);
9781 if (!dirp) {
9782 ret = -TARGET_ENOMEM;
9783 goto fail;
9784 }
9785
9786 ret = get_errno(sys_getdents(arg1, dirp, count));
9787 if (!is_error(ret)) {
9788 struct linux_dirent *de;
9789 struct target_dirent *tde;
9790 int len = ret;
9791 int reclen, treclen;
9792 int count1, tnamelen;
9793
9794 count1 = 0;
9795 de = dirp;
9796 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9797 goto efault;
9798 tde = target_dirp;
9799 while (len > 0) {
9800 reclen = de->d_reclen;
9801 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
9802 assert(tnamelen >= 0);
9803 treclen = tnamelen + offsetof(struct target_dirent, d_name);
9804 assert(count1 + treclen <= count);
9805 tde->d_reclen = tswap16(treclen);
9806 tde->d_ino = tswapal(de->d_ino);
9807 tde->d_off = tswapal(de->d_off);
9808 memcpy(tde->d_name, de->d_name, tnamelen);
9809 de = (struct linux_dirent *)((char *)de + reclen);
9810 len -= reclen;
9811 tde = (struct target_dirent *)((char *)tde + treclen);
9812 count1 += treclen;
9813 }
9814 ret = count1;
9815 unlock_user(target_dirp, arg2, ret);
9816 }
9817 g_free(dirp);
9818 }
9819 #else
9820 {
9821 struct linux_dirent *dirp;
9822 abi_long count = arg3;
9823
9824 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9825 goto efault;
9826 ret = get_errno(sys_getdents(arg1, dirp, count));
9827 if (!is_error(ret)) {
9828 struct linux_dirent *de;
9829 int len = ret;
9830 int reclen;
9831 de = dirp;
9832 while (len > 0) {
9833 reclen = de->d_reclen;
9834 if (reclen > len)
9835 break;
9836 de->d_reclen = tswap16(reclen);
9837 tswapls(&de->d_ino);
9838 tswapls(&de->d_off);
9839 de = (struct linux_dirent *)((char *)de + reclen);
9840 len -= reclen;
9841 }
9842 }
9843 unlock_user(dirp, arg2, ret);
9844 }
9845 #endif
9846 #else
9847 /* Implement getdents in terms of getdents64 */
9848 {
9849 struct linux_dirent64 *dirp;
9850 abi_long count = arg3;
9851
9852 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
9853 if (!dirp) {
9854 goto efault;
9855 }
9856 ret = get_errno(sys_getdents64(arg1, dirp, count));
9857 if (!is_error(ret)) {
9858 /* Convert the dirent64 structs to target dirent. We do this
9859 * in-place, since we can guarantee that a target_dirent is no
9860 * larger than a dirent64; however this means we have to be
9861 * careful to read everything before writing in the new format.
9862 */
9863 struct linux_dirent64 *de;
9864 struct target_dirent *tde;
9865 int len = ret;
9866 int tlen = 0;
9867
9868 de = dirp;
9869 tde = (struct target_dirent *)dirp;
9870 while (len > 0) {
9871 int namelen, treclen;
9872 int reclen = de->d_reclen;
9873 uint64_t ino = de->d_ino;
9874 int64_t off = de->d_off;
9875 uint8_t type = de->d_type;
9876
9877 namelen = strlen(de->d_name);
9878 treclen = offsetof(struct target_dirent, d_name)
9879 + namelen + 2;
9880 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
9881
9882 memmove(tde->d_name, de->d_name, namelen + 1);
9883 tde->d_ino = tswapal(ino);
9884 tde->d_off = tswapal(off);
9885 tde->d_reclen = tswap16(treclen);
9886 /* The target_dirent type is in what was formerly a padding
9887 * byte at the end of the structure:
9888 */
9889 *(((char *)tde) + treclen - 1) = type;
9890
9891 de = (struct linux_dirent64 *)((char *)de + reclen);
9892 tde = (struct target_dirent *)((char *)tde + treclen);
9893 len -= reclen;
9894 tlen += treclen;
9895 }
9896 ret = tlen;
9897 }
9898 unlock_user(dirp, arg2, ret);
9899 }
9900 #endif
9901 break;
9902 #endif /* TARGET_NR_getdents */
9903 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
9904 case TARGET_NR_getdents64:
9905 {
9906 struct linux_dirent64 *dirp;
9907 abi_long count = arg3;
9908 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9909 goto efault;
9910 ret = get_errno(sys_getdents64(arg1, dirp, count));
9911 if (!is_error(ret)) {
9912 struct linux_dirent64 *de;
9913 int len = ret;
9914 int reclen;
9915 de = dirp;
9916 while (len > 0) {
9917 reclen = de->d_reclen;
9918 if (reclen > len)
9919 break;
9920 de->d_reclen = tswap16(reclen);
9921 tswap64s((uint64_t *)&de->d_ino);
9922 tswap64s((uint64_t *)&de->d_off);
9923 de = (struct linux_dirent64 *)((char *)de + reclen);
9924 len -= reclen;
9925 }
9926 }
9927 unlock_user(dirp, arg2, ret);
9928 }
9929 break;
9930 #endif /* TARGET_NR_getdents64 */
9931 #if defined(TARGET_NR__newselect)
9932 case TARGET_NR__newselect:
9933 ret = do_select(arg1, arg2, arg3, arg4, arg5);
9934 break;
9935 #endif
9936 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll)
9937 # ifdef TARGET_NR_poll
9938 case TARGET_NR_poll:
9939 # endif
9940 # ifdef TARGET_NR_ppoll
9941 case TARGET_NR_ppoll:
9942 # endif
9943 {
9944 struct target_pollfd *target_pfd;
9945 unsigned int nfds = arg2;
9946 struct pollfd *pfd;
9947 unsigned int i;
9948
9949 pfd = NULL;
9950 target_pfd = NULL;
9951 if (nfds) {
9952 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
9953 ret = -TARGET_EINVAL;
9954 break;
9955 }
9956
9957 target_pfd = lock_user(VERIFY_WRITE, arg1,
9958 sizeof(struct target_pollfd) * nfds, 1);
9959 if (!target_pfd) {
9960 goto efault;
9961 }
9962
9963 pfd = alloca(sizeof(struct pollfd) * nfds);
9964 for (i = 0; i < nfds; i++) {
9965 pfd[i].fd = tswap32(target_pfd[i].fd);
9966 pfd[i].events = tswap16(target_pfd[i].events);
9967 }
9968 }
9969
9970 switch (num) {
9971 # ifdef TARGET_NR_ppoll
9972 case TARGET_NR_ppoll:
9973 {
9974 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
9975 target_sigset_t *target_set;
9976 sigset_t _set, *set = &_set;
9977
9978 if (arg3) {
9979 if (target_to_host_timespec(timeout_ts, arg3)) {
9980 unlock_user(target_pfd, arg1, 0);
9981 goto efault;
9982 }
9983 } else {
9984 timeout_ts = NULL;
9985 }
9986
9987 if (arg4) {
9988 if (arg5 != sizeof(target_sigset_t)) {
9989 unlock_user(target_pfd, arg1, 0);
9990 ret = -TARGET_EINVAL;
9991 break;
9992 }
9993
9994 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1);
9995 if (!target_set) {
9996 unlock_user(target_pfd, arg1, 0);
9997 goto efault;
9998 }
9999 target_to_host_sigset(set, target_set);
10000 } else {
10001 set = NULL;
10002 }
10003
10004 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
10005 set, SIGSET_T_SIZE));
10006
10007 if (!is_error(ret) && arg3) {
10008 host_to_target_timespec(arg3, timeout_ts);
10009 }
10010 if (arg4) {
10011 unlock_user(target_set, arg4, 0);
10012 }
10013 break;
10014 }
10015 # endif
10016 # ifdef TARGET_NR_poll
10017 case TARGET_NR_poll:
10018 {
10019 struct timespec ts, *pts;
10020
10021 if (arg3 >= 0) {
10022 /* Convert ms to secs, ns */
10023 ts.tv_sec = arg3 / 1000;
10024 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
10025 pts = &ts;
10026 } else {
10027 /* -ve poll() timeout means "infinite" */
10028 pts = NULL;
10029 }
10030 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
10031 break;
10032 }
10033 # endif
10034 default:
10035 g_assert_not_reached();
10036 }
10037
10038 if (!is_error(ret)) {
10039 for(i = 0; i < nfds; i++) {
10040 target_pfd[i].revents = tswap16(pfd[i].revents);
10041 }
10042 }
10043 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
10044 }
10045 break;
10046 #endif
10047 case TARGET_NR_flock:
10048 /* NOTE: the flock constant seems to be the same for every
10049 Linux platform */
10050 ret = get_errno(safe_flock(arg1, arg2));
10051 break;
10052 case TARGET_NR_readv:
10053 {
10054 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10055 if (vec != NULL) {
10056 ret = get_errno(safe_readv(arg1, vec, arg3));
10057 unlock_iovec(vec, arg2, arg3, 1);
10058 } else {
10059 ret = -host_to_target_errno(errno);
10060 }
10061 }
10062 break;
10063 case TARGET_NR_writev:
10064 {
10065 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10066 if (vec != NULL) {
10067 ret = get_errno(safe_writev(arg1, vec, arg3));
10068 unlock_iovec(vec, arg2, arg3, 0);
10069 } else {
10070 ret = -host_to_target_errno(errno);
10071 }
10072 }
10073 break;
10074 #if defined(TARGET_NR_preadv)
10075 case TARGET_NR_preadv:
10076 {
10077 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10078 if (vec != NULL) {
10079 ret = get_errno(safe_preadv(arg1, vec, arg3, arg4, arg5));
10080 unlock_iovec(vec, arg2, arg3, 1);
10081 } else {
10082 ret = -host_to_target_errno(errno);
10083 }
10084 }
10085 break;
10086 #endif
10087 #if defined(TARGET_NR_pwritev)
10088 case TARGET_NR_pwritev:
10089 {
10090 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10091 if (vec != NULL) {
10092 ret = get_errno(safe_pwritev(arg1, vec, arg3, arg4, arg5));
10093 unlock_iovec(vec, arg2, arg3, 0);
10094 } else {
10095 ret = -host_to_target_errno(errno);
10096 }
10097 }
10098 break;
10099 #endif
10100 case TARGET_NR_getsid:
10101 ret = get_errno(getsid(arg1));
10102 break;
10103 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10104 case TARGET_NR_fdatasync:
10105 ret = get_errno(fdatasync(arg1));
10106 break;
10107 #endif
10108 #ifdef TARGET_NR__sysctl
10109 case TARGET_NR__sysctl:
10110 /* We don't implement this, but ENOTDIR is always a safe
10111 return value. */
10112 ret = -TARGET_ENOTDIR;
10113 break;
10114 #endif
10115 case TARGET_NR_sched_getaffinity:
10116 {
10117 unsigned int mask_size;
10118 unsigned long *mask;
10119
10120 /*
10121 * sched_getaffinity needs multiples of ulong, so need to take
10122 * care of mismatches between target ulong and host ulong sizes.
10123 */
10124 if (arg2 & (sizeof(abi_ulong) - 1)) {
10125 ret = -TARGET_EINVAL;
10126 break;
10127 }
10128 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10129
10130 mask = alloca(mask_size);
10131 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10132
10133 if (!is_error(ret)) {
10134 if (ret > arg2) {
10135 /* More data returned than the caller's buffer will fit.
10136 * This only happens if sizeof(abi_long) < sizeof(long)
10137 * and the caller passed us a buffer holding an odd number
10138 * of abi_longs. If the host kernel is actually using the
10139 * extra 4 bytes then fail EINVAL; otherwise we can just
10140 * ignore them and only copy the interesting part.
10141 */
10142 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
10143 if (numcpus > arg2 * 8) {
10144 ret = -TARGET_EINVAL;
10145 break;
10146 }
10147 ret = arg2;
10148 }
10149
10150 if (copy_to_user(arg3, mask, ret)) {
10151 goto efault;
10152 }
10153 }
10154 }
10155 break;
10156 case TARGET_NR_sched_setaffinity:
10157 {
10158 unsigned int mask_size;
10159 unsigned long *mask;
10160
10161 /*
10162 * sched_setaffinity needs multiples of ulong, so need to take
10163 * care of mismatches between target ulong and host ulong sizes.
10164 */
10165 if (arg2 & (sizeof(abi_ulong) - 1)) {
10166 ret = -TARGET_EINVAL;
10167 break;
10168 }
10169 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10170
10171 mask = alloca(mask_size);
10172 if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) {
10173 goto efault;
10174 }
10175 memcpy(mask, p, arg2);
10176 unlock_user_struct(p, arg2, 0);
10177
10178 ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
10179 }
10180 break;
10181 case TARGET_NR_sched_setparam:
10182 {
10183 struct sched_param *target_schp;
10184 struct sched_param schp;
10185
10186 if (arg2 == 0) {
10187 return -TARGET_EINVAL;
10188 }
10189 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
10190 goto efault;
10191 schp.sched_priority = tswap32(target_schp->sched_priority);
10192 unlock_user_struct(target_schp, arg2, 0);
10193 ret = get_errno(sched_setparam(arg1, &schp));
10194 }
10195 break;
10196 case TARGET_NR_sched_getparam:
10197 {
10198 struct sched_param *target_schp;
10199 struct sched_param schp;
10200
10201 if (arg2 == 0) {
10202 return -TARGET_EINVAL;
10203 }
10204 ret = get_errno(sched_getparam(arg1, &schp));
10205 if (!is_error(ret)) {
10206 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
10207 goto efault;
10208 target_schp->sched_priority = tswap32(schp.sched_priority);
10209 unlock_user_struct(target_schp, arg2, 1);
10210 }
10211 }
10212 break;
10213 case TARGET_NR_sched_setscheduler:
10214 {
10215 struct sched_param *target_schp;
10216 struct sched_param schp;
10217 if (arg3 == 0) {
10218 return -TARGET_EINVAL;
10219 }
10220 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
10221 goto efault;
10222 schp.sched_priority = tswap32(target_schp->sched_priority);
10223 unlock_user_struct(target_schp, arg3, 0);
10224 ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
10225 }
10226 break;
10227 case TARGET_NR_sched_getscheduler:
10228 ret = get_errno(sched_getscheduler(arg1));
10229 break;
10230 case TARGET_NR_sched_yield:
10231 ret = get_errno(sched_yield());
10232 break;
10233 case TARGET_NR_sched_get_priority_max:
10234 ret = get_errno(sched_get_priority_max(arg1));
10235 break;
10236 case TARGET_NR_sched_get_priority_min:
10237 ret = get_errno(sched_get_priority_min(arg1));
10238 break;
10239 case TARGET_NR_sched_rr_get_interval:
10240 {
10241 struct timespec ts;
10242 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10243 if (!is_error(ret)) {
10244 ret = host_to_target_timespec(arg2, &ts);
10245 }
10246 }
10247 break;
10248 case TARGET_NR_nanosleep:
10249 {
10250 struct timespec req, rem;
10251 target_to_host_timespec(&req, arg1);
10252 ret = get_errno(safe_nanosleep(&req, &rem));
10253 if (is_error(ret) && arg2) {
10254 host_to_target_timespec(arg2, &rem);
10255 }
10256 }
10257 break;
10258 #ifdef TARGET_NR_query_module
10259 case TARGET_NR_query_module:
10260 goto unimplemented;
10261 #endif
10262 #ifdef TARGET_NR_nfsservctl
10263 case TARGET_NR_nfsservctl:
10264 goto unimplemented;
10265 #endif
10266 case TARGET_NR_prctl:
10267 switch (arg1) {
10268 case PR_GET_PDEATHSIG:
10269 {
10270 int deathsig;
10271 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
10272 if (!is_error(ret) && arg2
10273 && put_user_ual(deathsig, arg2)) {
10274 goto efault;
10275 }
10276 break;
10277 }
10278 #ifdef PR_GET_NAME
10279 case PR_GET_NAME:
10280 {
10281 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
10282 if (!name) {
10283 goto efault;
10284 }
10285 ret = get_errno(prctl(arg1, (unsigned long)name,
10286 arg3, arg4, arg5));
10287 unlock_user(name, arg2, 16);
10288 break;
10289 }
10290 case PR_SET_NAME:
10291 {
10292 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
10293 if (!name) {
10294 goto efault;
10295 }
10296 ret = get_errno(prctl(arg1, (unsigned long)name,
10297 arg3, arg4, arg5));
10298 unlock_user(name, arg2, 0);
10299 break;
10300 }
10301 #endif
10302 default:
10303 /* Most prctl options have no pointer arguments */
10304 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
10305 break;
10306 }
10307 break;
10308 #ifdef TARGET_NR_arch_prctl
10309 case TARGET_NR_arch_prctl:
10310 #if defined(TARGET_I386) && !defined(TARGET_ABI32)
10311 ret = do_arch_prctl(cpu_env, arg1, arg2);
10312 break;
10313 #else
10314 goto unimplemented;
10315 #endif
10316 #endif
10317 #ifdef TARGET_NR_pread64
10318 case TARGET_NR_pread64:
10319 if (regpairs_aligned(cpu_env)) {
10320 arg4 = arg5;
10321 arg5 = arg6;
10322 }
10323 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
10324 goto efault;
10325 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10326 unlock_user(p, arg2, ret);
10327 break;
10328 case TARGET_NR_pwrite64:
10329 if (regpairs_aligned(cpu_env)) {
10330 arg4 = arg5;
10331 arg5 = arg6;
10332 }
10333 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
10334 goto efault;
10335 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10336 unlock_user(p, arg2, 0);
10337 break;
10338 #endif
10339 case TARGET_NR_getcwd:
10340 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10341 goto efault;
10342 ret = get_errno(sys_getcwd1(p, arg2));
10343 unlock_user(p, arg1, ret);
10344 break;
10345 case TARGET_NR_capget:
10346 case TARGET_NR_capset:
10347 {
10348 struct target_user_cap_header *target_header;
10349 struct target_user_cap_data *target_data = NULL;
10350 struct __user_cap_header_struct header;
10351 struct __user_cap_data_struct data[2];
10352 struct __user_cap_data_struct *dataptr = NULL;
10353 int i, target_datalen;
10354 int data_items = 1;
10355
10356 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10357 goto efault;
10358 }
10359 header.version = tswap32(target_header->version);
10360 header.pid = tswap32(target_header->pid);
10361
10362 if (header.version != _LINUX_CAPABILITY_VERSION) {
10363 /* Version 2 and up takes pointer to two user_data structs */
10364 data_items = 2;
10365 }
10366
10367 target_datalen = sizeof(*target_data) * data_items;
10368
10369 if (arg2) {
10370 if (num == TARGET_NR_capget) {
10371 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10372 } else {
10373 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10374 }
10375 if (!target_data) {
10376 unlock_user_struct(target_header, arg1, 0);
10377 goto efault;
10378 }
10379
10380 if (num == TARGET_NR_capset) {
10381 for (i = 0; i < data_items; i++) {
10382 data[i].effective = tswap32(target_data[i].effective);
10383 data[i].permitted = tswap32(target_data[i].permitted);
10384 data[i].inheritable = tswap32(target_data[i].inheritable);
10385 }
10386 }
10387
10388 dataptr = data;
10389 }
10390
10391 if (num == TARGET_NR_capget) {
10392 ret = get_errno(capget(&header, dataptr));
10393 } else {
10394 ret = get_errno(capset(&header, dataptr));
10395 }
10396
10397 /* The kernel always updates version for both capget and capset */
10398 target_header->version = tswap32(header.version);
10399 unlock_user_struct(target_header, arg1, 1);
10400
10401 if (arg2) {
10402 if (num == TARGET_NR_capget) {
10403 for (i = 0; i < data_items; i++) {
10404 target_data[i].effective = tswap32(data[i].effective);
10405 target_data[i].permitted = tswap32(data[i].permitted);
10406 target_data[i].inheritable = tswap32(data[i].inheritable);
10407 }
10408 unlock_user(target_data, arg2, target_datalen);
10409 } else {
10410 unlock_user(target_data, arg2, 0);
10411 }
10412 }
10413 break;
10414 }
10415 case TARGET_NR_sigaltstack:
10416 ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env));
10417 break;
10418
10419 #ifdef CONFIG_SENDFILE
10420 case TARGET_NR_sendfile:
10421 {
10422 off_t *offp = NULL;
10423 off_t off;
10424 if (arg3) {
10425 ret = get_user_sal(off, arg3);
10426 if (is_error(ret)) {
10427 break;
10428 }
10429 offp = &off;
10430 }
10431 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10432 if (!is_error(ret) && arg3) {
10433 abi_long ret2 = put_user_sal(off, arg3);
10434 if (is_error(ret2)) {
10435 ret = ret2;
10436 }
10437 }
10438 break;
10439 }
10440 #ifdef TARGET_NR_sendfile64
10441 case TARGET_NR_sendfile64:
10442 {
10443 off_t *offp = NULL;
10444 off_t off;
10445 if (arg3) {
10446 ret = get_user_s64(off, arg3);
10447 if (is_error(ret)) {
10448 break;
10449 }
10450 offp = &off;
10451 }
10452 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10453 if (!is_error(ret) && arg3) {
10454 abi_long ret2 = put_user_s64(off, arg3);
10455 if (is_error(ret2)) {
10456 ret = ret2;
10457 }
10458 }
10459 break;
10460 }
10461 #endif
10462 #else
10463 case TARGET_NR_sendfile:
10464 #ifdef TARGET_NR_sendfile64
10465 case TARGET_NR_sendfile64:
10466 #endif
10467 goto unimplemented;
10468 #endif
10469
10470 #ifdef TARGET_NR_getpmsg
10471 case TARGET_NR_getpmsg:
10472 goto unimplemented;
10473 #endif
10474 #ifdef TARGET_NR_putpmsg
10475 case TARGET_NR_putpmsg:
10476 goto unimplemented;
10477 #endif
10478 #ifdef TARGET_NR_vfork
10479 case TARGET_NR_vfork:
10480 ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD,
10481 0, 0, 0, 0));
10482 break;
10483 #endif
10484 #ifdef TARGET_NR_ugetrlimit
10485 case TARGET_NR_ugetrlimit:
10486 {
10487 struct rlimit rlim;
10488 int resource = target_to_host_resource(arg1);
10489 ret = get_errno(getrlimit(resource, &rlim));
10490 if (!is_error(ret)) {
10491 struct target_rlimit *target_rlim;
10492 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10493 goto efault;
10494 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10495 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10496 unlock_user_struct(target_rlim, arg2, 1);
10497 }
10498 break;
10499 }
10500 #endif
10501 #ifdef TARGET_NR_truncate64
10502 case TARGET_NR_truncate64:
10503 if (!(p = lock_user_string(arg1)))
10504 goto efault;
10505 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
10506 unlock_user(p, arg1, 0);
10507 break;
10508 #endif
10509 #ifdef TARGET_NR_ftruncate64
10510 case TARGET_NR_ftruncate64:
10511 ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
10512 break;
10513 #endif
10514 #ifdef TARGET_NR_stat64
10515 case TARGET_NR_stat64:
10516 if (!(p = lock_user_string(arg1)))
10517 goto efault;
10518 ret = get_errno(stat(path(p), &st));
10519 unlock_user(p, arg1, 0);
10520 if (!is_error(ret))
10521 ret = host_to_target_stat64(cpu_env, arg2, &st);
10522 break;
10523 #endif
10524 #ifdef TARGET_NR_lstat64
10525 case TARGET_NR_lstat64:
10526 if (!(p = lock_user_string(arg1)))
10527 goto efault;
10528 ret = get_errno(lstat(path(p), &st));
10529 unlock_user(p, arg1, 0);
10530 if (!is_error(ret))
10531 ret = host_to_target_stat64(cpu_env, arg2, &st);
10532 break;
10533 #endif
10534 #ifdef TARGET_NR_fstat64
10535 case TARGET_NR_fstat64:
10536 ret = get_errno(fstat(arg1, &st));
10537 if (!is_error(ret))
10538 ret = host_to_target_stat64(cpu_env, arg2, &st);
10539 break;
10540 #endif
10541 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
10542 #ifdef TARGET_NR_fstatat64
10543 case TARGET_NR_fstatat64:
10544 #endif
10545 #ifdef TARGET_NR_newfstatat
10546 case TARGET_NR_newfstatat:
10547 #endif
10548 if (!(p = lock_user_string(arg2)))
10549 goto efault;
10550 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
10551 if (!is_error(ret))
10552 ret = host_to_target_stat64(cpu_env, arg3, &st);
10553 break;
10554 #endif
10555 #ifdef TARGET_NR_lchown
10556 case TARGET_NR_lchown:
10557 if (!(p = lock_user_string(arg1)))
10558 goto efault;
10559 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
10560 unlock_user(p, arg1, 0);
10561 break;
10562 #endif
10563 #ifdef TARGET_NR_getuid
10564 case TARGET_NR_getuid:
10565 ret = get_errno(high2lowuid(getuid()));
10566 break;
10567 #endif
10568 #ifdef TARGET_NR_getgid
10569 case TARGET_NR_getgid:
10570 ret = get_errno(high2lowgid(getgid()));
10571 break;
10572 #endif
10573 #ifdef TARGET_NR_geteuid
10574 case TARGET_NR_geteuid:
10575 ret = get_errno(high2lowuid(geteuid()));
10576 break;
10577 #endif
10578 #ifdef TARGET_NR_getegid
10579 case TARGET_NR_getegid:
10580 ret = get_errno(high2lowgid(getegid()));
10581 break;
10582 #endif
10583 case TARGET_NR_setreuid:
10584 ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
10585 break;
10586 case TARGET_NR_setregid:
10587 ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
10588 break;
10589 case TARGET_NR_getgroups:
10590 {
10591 int gidsetsize = arg1;
10592 target_id *target_grouplist;
10593 gid_t *grouplist;
10594 int i;
10595
10596 grouplist = alloca(gidsetsize * sizeof(gid_t));
10597 ret = get_errno(getgroups(gidsetsize, grouplist));
10598 if (gidsetsize == 0)
10599 break;
10600 if (!is_error(ret)) {
10601 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
10602 if (!target_grouplist)
10603 goto efault;
10604 for(i = 0;i < ret; i++)
10605 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
10606 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
10607 }
10608 }
10609 break;
10610 case TARGET_NR_setgroups:
10611 {
10612 int gidsetsize = arg1;
10613 target_id *target_grouplist;
10614 gid_t *grouplist = NULL;
10615 int i;
10616 if (gidsetsize) {
10617 grouplist = alloca(gidsetsize * sizeof(gid_t));
10618 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
10619 if (!target_grouplist) {
10620 ret = -TARGET_EFAULT;
10621 goto fail;
10622 }
10623 for (i = 0; i < gidsetsize; i++) {
10624 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
10625 }
10626 unlock_user(target_grouplist, arg2, 0);
10627 }
10628 ret = get_errno(setgroups(gidsetsize, grouplist));
10629 }
10630 break;
10631 case TARGET_NR_fchown:
10632 ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
10633 break;
10634 #if defined(TARGET_NR_fchownat)
10635 case TARGET_NR_fchownat:
10636 if (!(p = lock_user_string(arg2)))
10637 goto efault;
10638 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
10639 low2highgid(arg4), arg5));
10640 unlock_user(p, arg2, 0);
10641 break;
10642 #endif
10643 #ifdef TARGET_NR_setresuid
10644 case TARGET_NR_setresuid:
10645 ret = get_errno(sys_setresuid(low2highuid(arg1),
10646 low2highuid(arg2),
10647 low2highuid(arg3)));
10648 break;
10649 #endif
10650 #ifdef TARGET_NR_getresuid
10651 case TARGET_NR_getresuid:
10652 {
10653 uid_t ruid, euid, suid;
10654 ret = get_errno(getresuid(&ruid, &euid, &suid));
10655 if (!is_error(ret)) {
10656 if (put_user_id(high2lowuid(ruid), arg1)
10657 || put_user_id(high2lowuid(euid), arg2)
10658 || put_user_id(high2lowuid(suid), arg3))
10659 goto efault;
10660 }
10661 }
10662 break;
10663 #endif
10664 #ifdef TARGET_NR_getresgid
10665 case TARGET_NR_setresgid:
10666 ret = get_errno(sys_setresgid(low2highgid(arg1),
10667 low2highgid(arg2),
10668 low2highgid(arg3)));
10669 break;
10670 #endif
10671 #ifdef TARGET_NR_getresgid
10672 case TARGET_NR_getresgid:
10673 {
10674 gid_t rgid, egid, sgid;
10675 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10676 if (!is_error(ret)) {
10677 if (put_user_id(high2lowgid(rgid), arg1)
10678 || put_user_id(high2lowgid(egid), arg2)
10679 || put_user_id(high2lowgid(sgid), arg3))
10680 goto efault;
10681 }
10682 }
10683 break;
10684 #endif
10685 #ifdef TARGET_NR_chown
10686 case TARGET_NR_chown:
10687 if (!(p = lock_user_string(arg1)))
10688 goto efault;
10689 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
10690 unlock_user(p, arg1, 0);
10691 break;
10692 #endif
10693 case TARGET_NR_setuid:
10694 ret = get_errno(sys_setuid(low2highuid(arg1)));
10695 break;
10696 case TARGET_NR_setgid:
10697 ret = get_errno(sys_setgid(low2highgid(arg1)));
10698 break;
10699 case TARGET_NR_setfsuid:
10700 ret = get_errno(setfsuid(arg1));
10701 break;
10702 case TARGET_NR_setfsgid:
10703 ret = get_errno(setfsgid(arg1));
10704 break;
10705
10706 #ifdef TARGET_NR_lchown32
10707 case TARGET_NR_lchown32:
10708 if (!(p = lock_user_string(arg1)))
10709 goto efault;
10710 ret = get_errno(lchown(p, arg2, arg3));
10711 unlock_user(p, arg1, 0);
10712 break;
10713 #endif
10714 #ifdef TARGET_NR_getuid32
10715 case TARGET_NR_getuid32:
10716 ret = get_errno(getuid());
10717 break;
10718 #endif
10719
10720 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
10721 /* Alpha specific */
10722 case TARGET_NR_getxuid:
10723 {
10724 uid_t euid;
10725 euid=geteuid();
10726 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
10727 }
10728 ret = get_errno(getuid());
10729 break;
10730 #endif
10731 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
10732 /* Alpha specific */
10733 case TARGET_NR_getxgid:
10734 {
10735 uid_t egid;
10736 egid=getegid();
10737 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
10738 }
10739 ret = get_errno(getgid());
10740 break;
10741 #endif
10742 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
10743 /* Alpha specific */
10744 case TARGET_NR_osf_getsysinfo:
10745 ret = -TARGET_EOPNOTSUPP;
10746 switch (arg1) {
10747 case TARGET_GSI_IEEE_FP_CONTROL:
10748 {
10749 uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env);
10750
10751 /* Copied from linux ieee_fpcr_to_swcr. */
10752 swcr = (fpcr >> 35) & SWCR_STATUS_MASK;
10753 swcr |= (fpcr >> 36) & SWCR_MAP_DMZ;
10754 swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV
10755 | SWCR_TRAP_ENABLE_DZE
10756 | SWCR_TRAP_ENABLE_OVF);
10757 swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF
10758 | SWCR_TRAP_ENABLE_INE);
10759 swcr |= (fpcr >> 47) & SWCR_MAP_UMZ;
10760 swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO;
10761
10762 if (put_user_u64 (swcr, arg2))
10763 goto efault;
10764 ret = 0;
10765 }
10766 break;
10767
10768 /* case GSI_IEEE_STATE_AT_SIGNAL:
10769 -- Not implemented in linux kernel.
10770 case GSI_UACPROC:
10771 -- Retrieves current unaligned access state; not much used.
10772 case GSI_PROC_TYPE:
10773 -- Retrieves implver information; surely not used.
10774 case GSI_GET_HWRPB:
10775 -- Grabs a copy of the HWRPB; surely not used.
10776 */
10777 }
10778 break;
10779 #endif
10780 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
10781 /* Alpha specific */
10782 case TARGET_NR_osf_setsysinfo:
10783 ret = -TARGET_EOPNOTSUPP;
10784 switch (arg1) {
10785 case TARGET_SSI_IEEE_FP_CONTROL:
10786 {
10787 uint64_t swcr, fpcr, orig_fpcr;
10788
10789 if (get_user_u64 (swcr, arg2)) {
10790 goto efault;
10791 }
10792 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
10793 fpcr = orig_fpcr & FPCR_DYN_MASK;
10794
10795 /* Copied from linux ieee_swcr_to_fpcr. */
10796 fpcr |= (swcr & SWCR_STATUS_MASK) << 35;
10797 fpcr |= (swcr & SWCR_MAP_DMZ) << 36;
10798 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV
10799 | SWCR_TRAP_ENABLE_DZE
10800 | SWCR_TRAP_ENABLE_OVF)) << 48;
10801 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF
10802 | SWCR_TRAP_ENABLE_INE)) << 57;
10803 fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0);
10804 fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41;
10805
10806 cpu_alpha_store_fpcr(cpu_env, fpcr);
10807 ret = 0;
10808 }
10809 break;
10810
10811 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
10812 {
10813 uint64_t exc, fpcr, orig_fpcr;
10814 int si_code;
10815
10816 if (get_user_u64(exc, arg2)) {
10817 goto efault;
10818 }
10819
10820 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
10821
10822 /* We only add to the exception status here. */
10823 fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35);
10824
10825 cpu_alpha_store_fpcr(cpu_env, fpcr);
10826 ret = 0;
10827
10828 /* Old exceptions are not signaled. */
10829 fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK);
10830
10831 /* If any exceptions set by this call,
10832 and are unmasked, send a signal. */
10833 si_code = 0;
10834 if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) {
10835 si_code = TARGET_FPE_FLTRES;
10836 }
10837 if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) {
10838 si_code = TARGET_FPE_FLTUND;
10839 }
10840 if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) {
10841 si_code = TARGET_FPE_FLTOVF;
10842 }
10843 if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) {
10844 si_code = TARGET_FPE_FLTDIV;
10845 }
10846 if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) {
10847 si_code = TARGET_FPE_FLTINV;
10848 }
10849 if (si_code != 0) {
10850 target_siginfo_t info;
10851 info.si_signo = SIGFPE;
10852 info.si_errno = 0;
10853 info.si_code = si_code;
10854 info._sifields._sigfault._addr
10855 = ((CPUArchState *)cpu_env)->pc;
10856 queue_signal((CPUArchState *)cpu_env, info.si_signo,
10857 QEMU_SI_FAULT, &info);
10858 }
10859 }
10860 break;
10861
10862 /* case SSI_NVPAIRS:
10863 -- Used with SSIN_UACPROC to enable unaligned accesses.
10864 case SSI_IEEE_STATE_AT_SIGNAL:
10865 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
10866 -- Not implemented in linux kernel
10867 */
10868 }
10869 break;
10870 #endif
10871 #ifdef TARGET_NR_osf_sigprocmask
10872 /* Alpha specific. */
10873 case TARGET_NR_osf_sigprocmask:
10874 {
10875 abi_ulong mask;
10876 int how;
10877 sigset_t set, oldset;
10878
10879 switch(arg1) {
10880 case TARGET_SIG_BLOCK:
10881 how = SIG_BLOCK;
10882 break;
10883 case TARGET_SIG_UNBLOCK:
10884 how = SIG_UNBLOCK;
10885 break;
10886 case TARGET_SIG_SETMASK:
10887 how = SIG_SETMASK;
10888 break;
10889 default:
10890 ret = -TARGET_EINVAL;
10891 goto fail;
10892 }
10893 mask = arg2;
10894 target_to_host_old_sigset(&set, &mask);
10895 ret = do_sigprocmask(how, &set, &oldset);
10896 if (!ret) {
10897 host_to_target_old_sigset(&mask, &oldset);
10898 ret = mask;
10899 }
10900 }
10901 break;
10902 #endif
10903
10904 #ifdef TARGET_NR_getgid32
10905 case TARGET_NR_getgid32:
10906 ret = get_errno(getgid());
10907 break;
10908 #endif
10909 #ifdef TARGET_NR_geteuid32
10910 case TARGET_NR_geteuid32:
10911 ret = get_errno(geteuid());
10912 break;
10913 #endif
10914 #ifdef TARGET_NR_getegid32
10915 case TARGET_NR_getegid32:
10916 ret = get_errno(getegid());
10917 break;
10918 #endif
10919 #ifdef TARGET_NR_setreuid32
10920 case TARGET_NR_setreuid32:
10921 ret = get_errno(setreuid(arg1, arg2));
10922 break;
10923 #endif
10924 #ifdef TARGET_NR_setregid32
10925 case TARGET_NR_setregid32:
10926 ret = get_errno(setregid(arg1, arg2));
10927 break;
10928 #endif
10929 #ifdef TARGET_NR_getgroups32
10930 case TARGET_NR_getgroups32:
10931 {
10932 int gidsetsize = arg1;
10933 uint32_t *target_grouplist;
10934 gid_t *grouplist;
10935 int i;
10936
10937 grouplist = alloca(gidsetsize * sizeof(gid_t));
10938 ret = get_errno(getgroups(gidsetsize, grouplist));
10939 if (gidsetsize == 0)
10940 break;
10941 if (!is_error(ret)) {
10942 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
10943 if (!target_grouplist) {
10944 ret = -TARGET_EFAULT;
10945 goto fail;
10946 }
10947 for(i = 0;i < ret; i++)
10948 target_grouplist[i] = tswap32(grouplist[i]);
10949 unlock_user(target_grouplist, arg2, gidsetsize * 4);
10950 }
10951 }
10952 break;
10953 #endif
10954 #ifdef TARGET_NR_setgroups32
10955 case TARGET_NR_setgroups32:
10956 {
10957 int gidsetsize = arg1;
10958 uint32_t *target_grouplist;
10959 gid_t *grouplist;
10960 int i;
10961
10962 grouplist = alloca(gidsetsize * sizeof(gid_t));
10963 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
10964 if (!target_grouplist) {
10965 ret = -TARGET_EFAULT;
10966 goto fail;
10967 }
10968 for(i = 0;i < gidsetsize; i++)
10969 grouplist[i] = tswap32(target_grouplist[i]);
10970 unlock_user(target_grouplist, arg2, 0);
10971 ret = get_errno(setgroups(gidsetsize, grouplist));
10972 }
10973 break;
10974 #endif
10975 #ifdef TARGET_NR_fchown32
10976 case TARGET_NR_fchown32:
10977 ret = get_errno(fchown(arg1, arg2, arg3));
10978 break;
10979 #endif
10980 #ifdef TARGET_NR_setresuid32
10981 case TARGET_NR_setresuid32:
10982 ret = get_errno(sys_setresuid(arg1, arg2, arg3));
10983 break;
10984 #endif
10985 #ifdef TARGET_NR_getresuid32
10986 case TARGET_NR_getresuid32:
10987 {
10988 uid_t ruid, euid, suid;
10989 ret = get_errno(getresuid(&ruid, &euid, &suid));
10990 if (!is_error(ret)) {
10991 if (put_user_u32(ruid, arg1)
10992 || put_user_u32(euid, arg2)
10993 || put_user_u32(suid, arg3))
10994 goto efault;
10995 }
10996 }
10997 break;
10998 #endif
10999 #ifdef TARGET_NR_setresgid32
11000 case TARGET_NR_setresgid32:
11001 ret = get_errno(sys_setresgid(arg1, arg2, arg3));
11002 break;
11003 #endif
11004 #ifdef TARGET_NR_getresgid32
11005 case TARGET_NR_getresgid32:
11006 {
11007 gid_t rgid, egid, sgid;
11008 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11009 if (!is_error(ret)) {
11010 if (put_user_u32(rgid, arg1)
11011 || put_user_u32(egid, arg2)
11012 || put_user_u32(sgid, arg3))
11013 goto efault;
11014 }
11015 }
11016 break;
11017 #endif
11018 #ifdef TARGET_NR_chown32
11019 case TARGET_NR_chown32:
11020 if (!(p = lock_user_string(arg1)))
11021 goto efault;
11022 ret = get_errno(chown(p, arg2, arg3));
11023 unlock_user(p, arg1, 0);
11024 break;
11025 #endif
11026 #ifdef TARGET_NR_setuid32
11027 case TARGET_NR_setuid32:
11028 ret = get_errno(sys_setuid(arg1));
11029 break;
11030 #endif
11031 #ifdef TARGET_NR_setgid32
11032 case TARGET_NR_setgid32:
11033 ret = get_errno(sys_setgid(arg1));
11034 break;
11035 #endif
11036 #ifdef TARGET_NR_setfsuid32
11037 case TARGET_NR_setfsuid32:
11038 ret = get_errno(setfsuid(arg1));
11039 break;
11040 #endif
11041 #ifdef TARGET_NR_setfsgid32
11042 case TARGET_NR_setfsgid32:
11043 ret = get_errno(setfsgid(arg1));
11044 break;
11045 #endif
11046
11047 case TARGET_NR_pivot_root:
11048 goto unimplemented;
11049 #ifdef TARGET_NR_mincore
11050 case TARGET_NR_mincore:
11051 {
11052 void *a;
11053 ret = -TARGET_EFAULT;
11054 if (!(a = lock_user(VERIFY_READ, arg1,arg2, 0)))
11055 goto efault;
11056 if (!(p = lock_user_string(arg3)))
11057 goto mincore_fail;
11058 ret = get_errno(mincore(a, arg2, p));
11059 unlock_user(p, arg3, ret);
11060 mincore_fail:
11061 unlock_user(a, arg1, 0);
11062 }
11063 break;
11064 #endif
11065 #ifdef TARGET_NR_arm_fadvise64_64
11066 case TARGET_NR_arm_fadvise64_64:
11067 /* arm_fadvise64_64 looks like fadvise64_64 but
11068 * with different argument order: fd, advice, offset, len
11069 * rather than the usual fd, offset, len, advice.
11070 * Note that offset and len are both 64-bit so appear as
11071 * pairs of 32-bit registers.
11072 */
11073 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
11074 target_offset64(arg5, arg6), arg2);
11075 ret = -host_to_target_errno(ret);
11076 break;
11077 #endif
11078
11079 #if TARGET_ABI_BITS == 32
11080
11081 #ifdef TARGET_NR_fadvise64_64
11082 case TARGET_NR_fadvise64_64:
11083 /* 6 args: fd, offset (high, low), len (high, low), advice */
11084 if (regpairs_aligned(cpu_env)) {
11085 /* offset is in (3,4), len in (5,6) and advice in 7 */
11086 arg2 = arg3;
11087 arg3 = arg4;
11088 arg4 = arg5;
11089 arg5 = arg6;
11090 arg6 = arg7;
11091 }
11092 ret = -host_to_target_errno(posix_fadvise(arg1,
11093 target_offset64(arg2, arg3),
11094 target_offset64(arg4, arg5),
11095 arg6));
11096 break;
11097 #endif
11098
11099 #ifdef TARGET_NR_fadvise64
11100 case TARGET_NR_fadvise64:
11101 /* 5 args: fd, offset (high, low), len, advice */
11102 if (regpairs_aligned(cpu_env)) {
11103 /* offset is in (3,4), len in 5 and advice in 6 */
11104 arg2 = arg3;
11105 arg3 = arg4;
11106 arg4 = arg5;
11107 arg5 = arg6;
11108 }
11109 ret = -host_to_target_errno(posix_fadvise(arg1,
11110 target_offset64(arg2, arg3),
11111 arg4, arg5));
11112 break;
11113 #endif
11114
11115 #else /* not a 32-bit ABI */
11116 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
11117 #ifdef TARGET_NR_fadvise64_64
11118 case TARGET_NR_fadvise64_64:
11119 #endif
11120 #ifdef TARGET_NR_fadvise64
11121 case TARGET_NR_fadvise64:
11122 #endif
11123 #ifdef TARGET_S390X
11124 switch (arg4) {
11125 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
11126 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
11127 case 6: arg4 = POSIX_FADV_DONTNEED; break;
11128 case 7: arg4 = POSIX_FADV_NOREUSE; break;
11129 default: break;
11130 }
11131 #endif
11132 ret = -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
11133 break;
11134 #endif
11135 #endif /* end of 64-bit ABI fadvise handling */
11136
11137 #ifdef TARGET_NR_madvise
11138 case TARGET_NR_madvise:
11139 /* A straight passthrough may not be safe because qemu sometimes
11140 turns private file-backed mappings into anonymous mappings.
11141 This will break MADV_DONTNEED.
11142 This is a hint, so ignoring and returning success is ok. */
11143 ret = get_errno(0);
11144 break;
11145 #endif
11146 #if TARGET_ABI_BITS == 32
11147 case TARGET_NR_fcntl64:
11148 {
11149 int cmd;
11150 struct flock64 fl;
11151 from_flock64_fn *copyfrom = copy_from_user_flock64;
11152 to_flock64_fn *copyto = copy_to_user_flock64;
11153
11154 #ifdef TARGET_ARM
11155 if (((CPUARMState *)cpu_env)->eabi) {
11156 copyfrom = copy_from_user_eabi_flock64;
11157 copyto = copy_to_user_eabi_flock64;
11158 }
11159 #endif
11160
11161 cmd = target_to_host_fcntl_cmd(arg2);
11162 if (cmd == -TARGET_EINVAL) {
11163 ret = cmd;
11164 break;
11165 }
11166
11167 switch(arg2) {
11168 case TARGET_F_GETLK64:
11169 ret = copyfrom(&fl, arg3);
11170 if (ret) {
11171 break;
11172 }
11173 ret = get_errno(fcntl(arg1, cmd, &fl));
11174 if (ret == 0) {
11175 ret = copyto(arg3, &fl);
11176 }
11177 break;
11178
11179 case TARGET_F_SETLK64:
11180 case TARGET_F_SETLKW64:
11181 ret = copyfrom(&fl, arg3);
11182 if (ret) {
11183 break;
11184 }
11185 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11186 break;
11187 default:
11188 ret = do_fcntl(arg1, arg2, arg3);
11189 break;
11190 }
11191 break;
11192 }
11193 #endif
11194 #ifdef TARGET_NR_cacheflush
11195 case TARGET_NR_cacheflush:
11196 /* self-modifying code is handled automatically, so nothing needed */
11197 ret = 0;
11198 break;
11199 #endif
11200 #ifdef TARGET_NR_security
11201 case TARGET_NR_security:
11202 goto unimplemented;
11203 #endif
11204 #ifdef TARGET_NR_getpagesize
11205 case TARGET_NR_getpagesize:
11206 ret = TARGET_PAGE_SIZE;
11207 break;
11208 #endif
11209 case TARGET_NR_gettid:
11210 ret = get_errno(gettid());
11211 break;
11212 #ifdef TARGET_NR_readahead
11213 case TARGET_NR_readahead:
11214 #if TARGET_ABI_BITS == 32
11215 if (regpairs_aligned(cpu_env)) {
11216 arg2 = arg3;
11217 arg3 = arg4;
11218 arg4 = arg5;
11219 }
11220 ret = get_errno(readahead(arg1, ((off64_t)arg3 << 32) | arg2, arg4));
11221 #else
11222 ret = get_errno(readahead(arg1, arg2, arg3));
11223 #endif
11224 break;
11225 #endif
11226 #ifdef CONFIG_ATTR
11227 #ifdef TARGET_NR_setxattr
11228 case TARGET_NR_listxattr:
11229 case TARGET_NR_llistxattr:
11230 {
11231 void *p, *b = 0;
11232 if (arg2) {
11233 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11234 if (!b) {
11235 ret = -TARGET_EFAULT;
11236 break;
11237 }
11238 }
11239 p = lock_user_string(arg1);
11240 if (p) {
11241 if (num == TARGET_NR_listxattr) {
11242 ret = get_errno(listxattr(p, b, arg3));
11243 } else {
11244 ret = get_errno(llistxattr(p, b, arg3));
11245 }
11246 } else {
11247 ret = -TARGET_EFAULT;
11248 }
11249 unlock_user(p, arg1, 0);
11250 unlock_user(b, arg2, arg3);
11251 break;
11252 }
11253 case TARGET_NR_flistxattr:
11254 {
11255 void *b = 0;
11256 if (arg2) {
11257 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11258 if (!b) {
11259 ret = -TARGET_EFAULT;
11260 break;
11261 }
11262 }
11263 ret = get_errno(flistxattr(arg1, b, arg3));
11264 unlock_user(b, arg2, arg3);
11265 break;
11266 }
11267 case TARGET_NR_setxattr:
11268 case TARGET_NR_lsetxattr:
11269 {
11270 void *p, *n, *v = 0;
11271 if (arg3) {
11272 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11273 if (!v) {
11274 ret = -TARGET_EFAULT;
11275 break;
11276 }
11277 }
11278 p = lock_user_string(arg1);
11279 n = lock_user_string(arg2);
11280 if (p && n) {
11281 if (num == TARGET_NR_setxattr) {
11282 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11283 } else {
11284 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11285 }
11286 } else {
11287 ret = -TARGET_EFAULT;
11288 }
11289 unlock_user(p, arg1, 0);
11290 unlock_user(n, arg2, 0);
11291 unlock_user(v, arg3, 0);
11292 }
11293 break;
11294 case TARGET_NR_fsetxattr:
11295 {
11296 void *n, *v = 0;
11297 if (arg3) {
11298 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11299 if (!v) {
11300 ret = -TARGET_EFAULT;
11301 break;
11302 }
11303 }
11304 n = lock_user_string(arg2);
11305 if (n) {
11306 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11307 } else {
11308 ret = -TARGET_EFAULT;
11309 }
11310 unlock_user(n, arg2, 0);
11311 unlock_user(v, arg3, 0);
11312 }
11313 break;
11314 case TARGET_NR_getxattr:
11315 case TARGET_NR_lgetxattr:
11316 {
11317 void *p, *n, *v = 0;
11318 if (arg3) {
11319 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11320 if (!v) {
11321 ret = -TARGET_EFAULT;
11322 break;
11323 }
11324 }
11325 p = lock_user_string(arg1);
11326 n = lock_user_string(arg2);
11327 if (p && n) {
11328 if (num == TARGET_NR_getxattr) {
11329 ret = get_errno(getxattr(p, n, v, arg4));
11330 } else {
11331 ret = get_errno(lgetxattr(p, n, v, arg4));
11332 }
11333 } else {
11334 ret = -TARGET_EFAULT;
11335 }
11336 unlock_user(p, arg1, 0);
11337 unlock_user(n, arg2, 0);
11338 unlock_user(v, arg3, arg4);
11339 }
11340 break;
11341 case TARGET_NR_fgetxattr:
11342 {
11343 void *n, *v = 0;
11344 if (arg3) {
11345 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11346 if (!v) {
11347 ret = -TARGET_EFAULT;
11348 break;
11349 }
11350 }
11351 n = lock_user_string(arg2);
11352 if (n) {
11353 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11354 } else {
11355 ret = -TARGET_EFAULT;
11356 }
11357 unlock_user(n, arg2, 0);
11358 unlock_user(v, arg3, arg4);
11359 }
11360 break;
11361 case TARGET_NR_removexattr:
11362 case TARGET_NR_lremovexattr:
11363 {
11364 void *p, *n;
11365 p = lock_user_string(arg1);
11366 n = lock_user_string(arg2);
11367 if (p && n) {
11368 if (num == TARGET_NR_removexattr) {
11369 ret = get_errno(removexattr(p, n));
11370 } else {
11371 ret = get_errno(lremovexattr(p, n));
11372 }
11373 } else {
11374 ret = -TARGET_EFAULT;
11375 }
11376 unlock_user(p, arg1, 0);
11377 unlock_user(n, arg2, 0);
11378 }
11379 break;
11380 case TARGET_NR_fremovexattr:
11381 {
11382 void *n;
11383 n = lock_user_string(arg2);
11384 if (n) {
11385 ret = get_errno(fremovexattr(arg1, n));
11386 } else {
11387 ret = -TARGET_EFAULT;
11388 }
11389 unlock_user(n, arg2, 0);
11390 }
11391 break;
11392 #endif
11393 #endif /* CONFIG_ATTR */
11394 #ifdef TARGET_NR_set_thread_area
11395 case TARGET_NR_set_thread_area:
11396 #if defined(TARGET_MIPS)
11397 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
11398 ret = 0;
11399 break;
11400 #elif defined(TARGET_CRIS)
11401 if (arg1 & 0xff)
11402 ret = -TARGET_EINVAL;
11403 else {
11404 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
11405 ret = 0;
11406 }
11407 break;
11408 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
11409 ret = do_set_thread_area(cpu_env, arg1);
11410 break;
11411 #elif defined(TARGET_M68K)
11412 {
11413 TaskState *ts = cpu->opaque;
11414 ts->tp_value = arg1;
11415 ret = 0;
11416 break;
11417 }
11418 #else
11419 goto unimplemented_nowarn;
11420 #endif
11421 #endif
11422 #ifdef TARGET_NR_get_thread_area
11423 case TARGET_NR_get_thread_area:
11424 #if defined(TARGET_I386) && defined(TARGET_ABI32)
11425 ret = do_get_thread_area(cpu_env, arg1);
11426 break;
11427 #elif defined(TARGET_M68K)
11428 {
11429 TaskState *ts = cpu->opaque;
11430 ret = ts->tp_value;
11431 break;
11432 }
11433 #else
11434 goto unimplemented_nowarn;
11435 #endif
11436 #endif
11437 #ifdef TARGET_NR_getdomainname
11438 case TARGET_NR_getdomainname:
11439 goto unimplemented_nowarn;
11440 #endif
11441
11442 #ifdef TARGET_NR_clock_gettime
11443 case TARGET_NR_clock_gettime:
11444 {
11445 struct timespec ts;
11446 ret = get_errno(clock_gettime(arg1, &ts));
11447 if (!is_error(ret)) {
11448 host_to_target_timespec(arg2, &ts);
11449 }
11450 break;
11451 }
11452 #endif
11453 #ifdef TARGET_NR_clock_getres
11454 case TARGET_NR_clock_getres:
11455 {
11456 struct timespec ts;
11457 ret = get_errno(clock_getres(arg1, &ts));
11458 if (!is_error(ret)) {
11459 host_to_target_timespec(arg2, &ts);
11460 }
11461 break;
11462 }
11463 #endif
11464 #ifdef TARGET_NR_clock_nanosleep
11465 case TARGET_NR_clock_nanosleep:
11466 {
11467 struct timespec ts;
11468 target_to_host_timespec(&ts, arg3);
11469 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
11470 &ts, arg4 ? &ts : NULL));
11471 if (arg4)
11472 host_to_target_timespec(arg4, &ts);
11473
11474 #if defined(TARGET_PPC)
11475 /* clock_nanosleep is odd in that it returns positive errno values.
11476 * On PPC, CR0 bit 3 should be set in such a situation. */
11477 if (ret && ret != -TARGET_ERESTARTSYS) {
11478 ((CPUPPCState *)cpu_env)->crf[0] |= 1;
11479 }
11480 #endif
11481 break;
11482 }
11483 #endif
11484
11485 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
11486 case TARGET_NR_set_tid_address:
11487 ret = get_errno(set_tid_address((int *)g2h(arg1)));
11488 break;
11489 #endif
11490
11491 case TARGET_NR_tkill:
11492 ret = get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
11493 break;
11494
11495 case TARGET_NR_tgkill:
11496 ret = get_errno(safe_tgkill((int)arg1, (int)arg2,
11497 target_to_host_signal(arg3)));
11498 break;
11499
11500 #ifdef TARGET_NR_set_robust_list
11501 case TARGET_NR_set_robust_list:
11502 case TARGET_NR_get_robust_list:
11503 /* The ABI for supporting robust futexes has userspace pass
11504 * the kernel a pointer to a linked list which is updated by
11505 * userspace after the syscall; the list is walked by the kernel
11506 * when the thread exits. Since the linked list in QEMU guest
11507 * memory isn't a valid linked list for the host and we have
11508 * no way to reliably intercept the thread-death event, we can't
11509 * support these. Silently return ENOSYS so that guest userspace
11510 * falls back to a non-robust futex implementation (which should
11511 * be OK except in the corner case of the guest crashing while
11512 * holding a mutex that is shared with another process via
11513 * shared memory).
11514 */
11515 goto unimplemented_nowarn;
11516 #endif
11517
11518 #if defined(TARGET_NR_utimensat)
11519 case TARGET_NR_utimensat:
11520 {
11521 struct timespec *tsp, ts[2];
11522 if (!arg3) {
11523 tsp = NULL;
11524 } else {
11525 target_to_host_timespec(ts, arg3);
11526 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec));
11527 tsp = ts;
11528 }
11529 if (!arg2)
11530 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
11531 else {
11532 if (!(p = lock_user_string(arg2))) {
11533 ret = -TARGET_EFAULT;
11534 goto fail;
11535 }
11536 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
11537 unlock_user(p, arg2, 0);
11538 }
11539 }
11540 break;
11541 #endif
11542 case TARGET_NR_futex:
11543 ret = do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
11544 break;
11545 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
11546 case TARGET_NR_inotify_init:
11547 ret = get_errno(sys_inotify_init());
11548 break;
11549 #endif
11550 #ifdef CONFIG_INOTIFY1
11551 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
11552 case TARGET_NR_inotify_init1:
11553 ret = get_errno(sys_inotify_init1(arg1));
11554 break;
11555 #endif
11556 #endif
11557 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
11558 case TARGET_NR_inotify_add_watch:
11559 p = lock_user_string(arg2);
11560 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
11561 unlock_user(p, arg2, 0);
11562 break;
11563 #endif
11564 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
11565 case TARGET_NR_inotify_rm_watch:
11566 ret = get_errno(sys_inotify_rm_watch(arg1, arg2));
11567 break;
11568 #endif
11569
11570 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
11571 case TARGET_NR_mq_open:
11572 {
11573 struct mq_attr posix_mq_attr;
11574 int host_flags;
11575
11576 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
11577 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
11578 goto efault;
11579 }
11580 p = lock_user_string(arg1 - 1);
11581 if (!p) {
11582 goto efault;
11583 }
11584 ret = get_errno(mq_open(p, host_flags, arg3, &posix_mq_attr));
11585 unlock_user (p, arg1, 0);
11586 }
11587 break;
11588
11589 case TARGET_NR_mq_unlink:
11590 p = lock_user_string(arg1 - 1);
11591 if (!p) {
11592 ret = -TARGET_EFAULT;
11593 break;
11594 }
11595 ret = get_errno(mq_unlink(p));
11596 unlock_user (p, arg1, 0);
11597 break;
11598
11599 case TARGET_NR_mq_timedsend:
11600 {
11601 struct timespec ts;
11602
11603 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11604 if (arg5 != 0) {
11605 target_to_host_timespec(&ts, arg5);
11606 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
11607 host_to_target_timespec(arg5, &ts);
11608 } else {
11609 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
11610 }
11611 unlock_user (p, arg2, arg3);
11612 }
11613 break;
11614
11615 case TARGET_NR_mq_timedreceive:
11616 {
11617 struct timespec ts;
11618 unsigned int prio;
11619
11620 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11621 if (arg5 != 0) {
11622 target_to_host_timespec(&ts, arg5);
11623 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11624 &prio, &ts));
11625 host_to_target_timespec(arg5, &ts);
11626 } else {
11627 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11628 &prio, NULL));
11629 }
11630 unlock_user (p, arg2, arg3);
11631 if (arg4 != 0)
11632 put_user_u32(prio, arg4);
11633 }
11634 break;
11635
11636 /* Not implemented for now... */
11637 /* case TARGET_NR_mq_notify: */
11638 /* break; */
11639
11640 case TARGET_NR_mq_getsetattr:
11641 {
11642 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
11643 ret = 0;
11644 if (arg3 != 0) {
11645 ret = mq_getattr(arg1, &posix_mq_attr_out);
11646 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
11647 }
11648 if (arg2 != 0) {
11649 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
11650 ret |= mq_setattr(arg1, &posix_mq_attr_in, &posix_mq_attr_out);
11651 }
11652
11653 }
11654 break;
11655 #endif
11656
11657 #ifdef CONFIG_SPLICE
11658 #ifdef TARGET_NR_tee
11659 case TARGET_NR_tee:
11660 {
11661 ret = get_errno(tee(arg1,arg2,arg3,arg4));
11662 }
11663 break;
11664 #endif
11665 #ifdef TARGET_NR_splice
11666 case TARGET_NR_splice:
11667 {
11668 loff_t loff_in, loff_out;
11669 loff_t *ploff_in = NULL, *ploff_out = NULL;
11670 if (arg2) {
11671 if (get_user_u64(loff_in, arg2)) {
11672 goto efault;
11673 }
11674 ploff_in = &loff_in;
11675 }
11676 if (arg4) {
11677 if (get_user_u64(loff_out, arg4)) {
11678 goto efault;
11679 }
11680 ploff_out = &loff_out;
11681 }
11682 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
11683 if (arg2) {
11684 if (put_user_u64(loff_in, arg2)) {
11685 goto efault;
11686 }
11687 }
11688 if (arg4) {
11689 if (put_user_u64(loff_out, arg4)) {
11690 goto efault;
11691 }
11692 }
11693 }
11694 break;
11695 #endif
11696 #ifdef TARGET_NR_vmsplice
11697 case TARGET_NR_vmsplice:
11698 {
11699 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11700 if (vec != NULL) {
11701 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
11702 unlock_iovec(vec, arg2, arg3, 0);
11703 } else {
11704 ret = -host_to_target_errno(errno);
11705 }
11706 }
11707 break;
11708 #endif
11709 #endif /* CONFIG_SPLICE */
11710 #ifdef CONFIG_EVENTFD
11711 #if defined(TARGET_NR_eventfd)
11712 case TARGET_NR_eventfd:
11713 ret = get_errno(eventfd(arg1, 0));
11714 fd_trans_unregister(ret);
11715 break;
11716 #endif
11717 #if defined(TARGET_NR_eventfd2)
11718 case TARGET_NR_eventfd2:
11719 {
11720 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
11721 if (arg2 & TARGET_O_NONBLOCK) {
11722 host_flags |= O_NONBLOCK;
11723 }
11724 if (arg2 & TARGET_O_CLOEXEC) {
11725 host_flags |= O_CLOEXEC;
11726 }
11727 ret = get_errno(eventfd(arg1, host_flags));
11728 fd_trans_unregister(ret);
11729 break;
11730 }
11731 #endif
11732 #endif /* CONFIG_EVENTFD */
11733 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
11734 case TARGET_NR_fallocate:
11735 #if TARGET_ABI_BITS == 32
11736 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
11737 target_offset64(arg5, arg6)));
11738 #else
11739 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
11740 #endif
11741 break;
11742 #endif
11743 #if defined(CONFIG_SYNC_FILE_RANGE)
11744 #if defined(TARGET_NR_sync_file_range)
11745 case TARGET_NR_sync_file_range:
11746 #if TARGET_ABI_BITS == 32
11747 #if defined(TARGET_MIPS)
11748 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11749 target_offset64(arg5, arg6), arg7));
11750 #else
11751 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
11752 target_offset64(arg4, arg5), arg6));
11753 #endif /* !TARGET_MIPS */
11754 #else
11755 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
11756 #endif
11757 break;
11758 #endif
11759 #if defined(TARGET_NR_sync_file_range2)
11760 case TARGET_NR_sync_file_range2:
11761 /* This is like sync_file_range but the arguments are reordered */
11762 #if TARGET_ABI_BITS == 32
11763 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11764 target_offset64(arg5, arg6), arg2));
11765 #else
11766 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
11767 #endif
11768 break;
11769 #endif
11770 #endif
11771 #if defined(TARGET_NR_signalfd4)
11772 case TARGET_NR_signalfd4:
11773 ret = do_signalfd4(arg1, arg2, arg4);
11774 break;
11775 #endif
11776 #if defined(TARGET_NR_signalfd)
11777 case TARGET_NR_signalfd:
11778 ret = do_signalfd4(arg1, arg2, 0);
11779 break;
11780 #endif
11781 #if defined(CONFIG_EPOLL)
11782 #if defined(TARGET_NR_epoll_create)
11783 case TARGET_NR_epoll_create:
11784 ret = get_errno(epoll_create(arg1));
11785 break;
11786 #endif
11787 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
11788 case TARGET_NR_epoll_create1:
11789 ret = get_errno(epoll_create1(arg1));
11790 break;
11791 #endif
11792 #if defined(TARGET_NR_epoll_ctl)
11793 case TARGET_NR_epoll_ctl:
11794 {
11795 struct epoll_event ep;
11796 struct epoll_event *epp = 0;
11797 if (arg4) {
11798 struct target_epoll_event *target_ep;
11799 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
11800 goto efault;
11801 }
11802 ep.events = tswap32(target_ep->events);
11803 /* The epoll_data_t union is just opaque data to the kernel,
11804 * so we transfer all 64 bits across and need not worry what
11805 * actual data type it is.
11806 */
11807 ep.data.u64 = tswap64(target_ep->data.u64);
11808 unlock_user_struct(target_ep, arg4, 0);
11809 epp = &ep;
11810 }
11811 ret = get_errno(epoll_ctl(arg1, arg2, arg3, epp));
11812 break;
11813 }
11814 #endif
11815
11816 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
11817 #if defined(TARGET_NR_epoll_wait)
11818 case TARGET_NR_epoll_wait:
11819 #endif
11820 #if defined(TARGET_NR_epoll_pwait)
11821 case TARGET_NR_epoll_pwait:
11822 #endif
11823 {
11824 struct target_epoll_event *target_ep;
11825 struct epoll_event *ep;
11826 int epfd = arg1;
11827 int maxevents = arg3;
11828 int timeout = arg4;
11829
11830 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
11831 ret = -TARGET_EINVAL;
11832 break;
11833 }
11834
11835 target_ep = lock_user(VERIFY_WRITE, arg2,
11836 maxevents * sizeof(struct target_epoll_event), 1);
11837 if (!target_ep) {
11838 goto efault;
11839 }
11840
11841 ep = g_try_new(struct epoll_event, maxevents);
11842 if (!ep) {
11843 unlock_user(target_ep, arg2, 0);
11844 ret = -TARGET_ENOMEM;
11845 break;
11846 }
11847
11848 switch (num) {
11849 #if defined(TARGET_NR_epoll_pwait)
11850 case TARGET_NR_epoll_pwait:
11851 {
11852 target_sigset_t *target_set;
11853 sigset_t _set, *set = &_set;
11854
11855 if (arg5) {
11856 if (arg6 != sizeof(target_sigset_t)) {
11857 ret = -TARGET_EINVAL;
11858 break;
11859 }
11860
11861 target_set = lock_user(VERIFY_READ, arg5,
11862 sizeof(target_sigset_t), 1);
11863 if (!target_set) {
11864 ret = -TARGET_EFAULT;
11865 break;
11866 }
11867 target_to_host_sigset(set, target_set);
11868 unlock_user(target_set, arg5, 0);
11869 } else {
11870 set = NULL;
11871 }
11872
11873 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11874 set, SIGSET_T_SIZE));
11875 break;
11876 }
11877 #endif
11878 #if defined(TARGET_NR_epoll_wait)
11879 case TARGET_NR_epoll_wait:
11880 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11881 NULL, 0));
11882 break;
11883 #endif
11884 default:
11885 ret = -TARGET_ENOSYS;
11886 }
11887 if (!is_error(ret)) {
11888 int i;
11889 for (i = 0; i < ret; i++) {
11890 target_ep[i].events = tswap32(ep[i].events);
11891 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
11892 }
11893 unlock_user(target_ep, arg2,
11894 ret * sizeof(struct target_epoll_event));
11895 } else {
11896 unlock_user(target_ep, arg2, 0);
11897 }
11898 g_free(ep);
11899 break;
11900 }
11901 #endif
11902 #endif
11903 #ifdef TARGET_NR_prlimit64
11904 case TARGET_NR_prlimit64:
11905 {
11906 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
11907 struct target_rlimit64 *target_rnew, *target_rold;
11908 struct host_rlimit64 rnew, rold, *rnewp = 0;
11909 int resource = target_to_host_resource(arg2);
11910 if (arg3) {
11911 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
11912 goto efault;
11913 }
11914 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
11915 rnew.rlim_max = tswap64(target_rnew->rlim_max);
11916 unlock_user_struct(target_rnew, arg3, 0);
11917 rnewp = &rnew;
11918 }
11919
11920 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
11921 if (!is_error(ret) && arg4) {
11922 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
11923 goto efault;
11924 }
11925 target_rold->rlim_cur = tswap64(rold.rlim_cur);
11926 target_rold->rlim_max = tswap64(rold.rlim_max);
11927 unlock_user_struct(target_rold, arg4, 1);
11928 }
11929 break;
11930 }
11931 #endif
11932 #ifdef TARGET_NR_gethostname
11933 case TARGET_NR_gethostname:
11934 {
11935 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
11936 if (name) {
11937 ret = get_errno(gethostname(name, arg2));
11938 unlock_user(name, arg1, arg2);
11939 } else {
11940 ret = -TARGET_EFAULT;
11941 }
11942 break;
11943 }
11944 #endif
11945 #ifdef TARGET_NR_atomic_cmpxchg_32
11946 case TARGET_NR_atomic_cmpxchg_32:
11947 {
11948 /* should use start_exclusive from main.c */
11949 abi_ulong mem_value;
11950 if (get_user_u32(mem_value, arg6)) {
11951 target_siginfo_t info;
11952 info.si_signo = SIGSEGV;
11953 info.si_errno = 0;
11954 info.si_code = TARGET_SEGV_MAPERR;
11955 info._sifields._sigfault._addr = arg6;
11956 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11957 QEMU_SI_FAULT, &info);
11958 ret = 0xdeadbeef;
11959
11960 }
11961 if (mem_value == arg2)
11962 put_user_u32(arg1, arg6);
11963 ret = mem_value;
11964 break;
11965 }
11966 #endif
11967 #ifdef TARGET_NR_atomic_barrier
11968 case TARGET_NR_atomic_barrier:
11969 {
11970 /* Like the kernel implementation and the qemu arm barrier, no-op this? */
11971 ret = 0;
11972 break;
11973 }
11974 #endif
11975
11976 #ifdef TARGET_NR_timer_create
11977 case TARGET_NR_timer_create:
11978 {
11979 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
11980
11981 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
11982
11983 int clkid = arg1;
11984 int timer_index = next_free_host_timer();
11985
11986 if (timer_index < 0) {
11987 ret = -TARGET_EAGAIN;
11988 } else {
11989 timer_t *phtimer = g_posix_timers + timer_index;
11990
11991 if (arg2) {
11992 phost_sevp = &host_sevp;
11993 ret = target_to_host_sigevent(phost_sevp, arg2);
11994 if (ret != 0) {
11995 break;
11996 }
11997 }
11998
11999 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
12000 if (ret) {
12001 phtimer = NULL;
12002 } else {
12003 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
12004 goto efault;
12005 }
12006 }
12007 }
12008 break;
12009 }
12010 #endif
12011
12012 #ifdef TARGET_NR_timer_settime
12013 case TARGET_NR_timer_settime:
12014 {
12015 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
12016 * struct itimerspec * old_value */
12017 target_timer_t timerid = get_timer_id(arg1);
12018
12019 if (timerid < 0) {
12020 ret = timerid;
12021 } else if (arg3 == 0) {
12022 ret = -TARGET_EINVAL;
12023 } else {
12024 timer_t htimer = g_posix_timers[timerid];
12025 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12026
12027 target_to_host_itimerspec(&hspec_new, arg3);
12028 ret = get_errno(
12029 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12030 host_to_target_itimerspec(arg2, &hspec_old);
12031 }
12032 break;
12033 }
12034 #endif
12035
12036 #ifdef TARGET_NR_timer_gettime
12037 case TARGET_NR_timer_gettime:
12038 {
12039 /* args: timer_t timerid, struct itimerspec *curr_value */
12040 target_timer_t timerid = get_timer_id(arg1);
12041
12042 if (timerid < 0) {
12043 ret = timerid;
12044 } else if (!arg2) {
12045 ret = -TARGET_EFAULT;
12046 } else {
12047 timer_t htimer = g_posix_timers[timerid];
12048 struct itimerspec hspec;
12049 ret = get_errno(timer_gettime(htimer, &hspec));
12050
12051 if (host_to_target_itimerspec(arg2, &hspec)) {
12052 ret = -TARGET_EFAULT;
12053 }
12054 }
12055 break;
12056 }
12057 #endif
12058
12059 #ifdef TARGET_NR_timer_getoverrun
12060 case TARGET_NR_timer_getoverrun:
12061 {
12062 /* args: timer_t timerid */
12063 target_timer_t timerid = get_timer_id(arg1);
12064
12065 if (timerid < 0) {
12066 ret = timerid;
12067 } else {
12068 timer_t htimer = g_posix_timers[timerid];
12069 ret = get_errno(timer_getoverrun(htimer));
12070 }
12071 fd_trans_unregister(ret);
12072 break;
12073 }
12074 #endif
12075
12076 #ifdef TARGET_NR_timer_delete
12077 case TARGET_NR_timer_delete:
12078 {
12079 /* args: timer_t timerid */
12080 target_timer_t timerid = get_timer_id(arg1);
12081
12082 if (timerid < 0) {
12083 ret = timerid;
12084 } else {
12085 timer_t htimer = g_posix_timers[timerid];
12086 ret = get_errno(timer_delete(htimer));
12087 g_posix_timers[timerid] = 0;
12088 }
12089 break;
12090 }
12091 #endif
12092
12093 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
12094 case TARGET_NR_timerfd_create:
12095 ret = get_errno(timerfd_create(arg1,
12096 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
12097 break;
12098 #endif
12099
12100 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
12101 case TARGET_NR_timerfd_gettime:
12102 {
12103 struct itimerspec its_curr;
12104
12105 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12106
12107 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
12108 goto efault;
12109 }
12110 }
12111 break;
12112 #endif
12113
12114 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
12115 case TARGET_NR_timerfd_settime:
12116 {
12117 struct itimerspec its_new, its_old, *p_new;
12118
12119 if (arg3) {
12120 if (target_to_host_itimerspec(&its_new, arg3)) {
12121 goto efault;
12122 }
12123 p_new = &its_new;
12124 } else {
12125 p_new = NULL;
12126 }
12127
12128 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12129
12130 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
12131 goto efault;
12132 }
12133 }
12134 break;
12135 #endif
12136
12137 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
12138 case TARGET_NR_ioprio_get:
12139 ret = get_errno(ioprio_get(arg1, arg2));
12140 break;
12141 #endif
12142
12143 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
12144 case TARGET_NR_ioprio_set:
12145 ret = get_errno(ioprio_set(arg1, arg2, arg3));
12146 break;
12147 #endif
12148
12149 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
12150 case TARGET_NR_setns:
12151 ret = get_errno(setns(arg1, arg2));
12152 break;
12153 #endif
12154 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
12155 case TARGET_NR_unshare:
12156 ret = get_errno(unshare(arg1));
12157 break;
12158 #endif
12159 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
12160 case TARGET_NR_kcmp:
12161 ret = get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
12162 break;
12163 #endif
12164
12165 default:
12166 unimplemented:
12167 gemu_log("qemu: Unsupported syscall: %d\n", num);
12168 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list)
12169 unimplemented_nowarn:
12170 #endif
12171 ret = -TARGET_ENOSYS;
12172 break;
12173 }
12174 fail:
12175 #ifdef DEBUG
12176 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
12177 #endif
12178 if(do_strace)
12179 print_syscall_ret(num, ret);
12180 trace_guest_user_syscall_ret(cpu, num, ret);
12181 return ret;
12182 efault:
12183 ret = -TARGET_EFAULT;
12184 goto fail;
12185 }
Eric Blake's pending patches to qemu