libgo/sysinfo.c

   1 /* sysinfo.c -- input for mksysinfo.sh
   2
   3    Copyright 2009 The Go Authors. All rights reserved.
   4    Use of this source code is governed by a BSD-style
   5    license that can be found in the LICENSE file.  */
   6
   7 /* This file is passed to GCC with the -fdump-go-spec option to
   8    generate a Go version of the system information.  */
   9
  10 #include "config.h"
  11
  12 #include <stddef.h>
  13 #include <sys/types.h>
  14 #include <dirent.h>
  15 #include <errno.h>
  16 #include <fcntl.h>
  17 #include <ucontext.h>
  18 #include <netinet/in.h>
  19 /* <netinet/tcp.h> needs u_char/u_short, but <sys/bsd_types> is only
  20    included by <netinet/in.h> if _SGIAPI (i.e. _SGI_SOURCE
  21    && !_XOPEN_SOURCE.
  22    <sys/termios.h> only defines TIOCNOTTY if !_XOPEN_SOURCE, while
  23    <sys/ttold.h> does so unconditionally.  */
  24 #ifdef __sgi__
  25 #include <sys/bsd_types.h>
  26 #include <sys/ttold.h>
  27 #endif
  28 #include <netinet/tcp.h>
  29 #if defined(HAVE_NETINET_IN_SYSTM_H)
  30 #include <netinet/in_systm.h>
  31 #endif
  32 #if defined(HAVE_NETINET_IP_H)
  33 #include <netinet/ip.h>
  34 #endif
  35 #if defined(HAVE_NETINET_IP_MROUTE_H)
  36 #include <netinet/ip_mroute.h>
  37 #endif
  38 #if defined(HAVE_NETINET_IF_ETHER_H)
  39 #include <netinet/if_ether.h>
  40 #endif
  41 #include <signal.h>
  42 #include <sys/ioctl.h>
  43 #include <termios.h>
  44 #if defined(HAVE_SYSCALL_H)
  45 #include <syscall.h>
  46 #endif
  47 #if defined(HAVE_SYS_SYSCALL_H)
  48 #include <sys/syscall.h>
  49 #endif
  50 #if defined(HAVE_SYS_EPOLL_H)
  51 #include <sys/epoll.h>
  52 #endif
  53 #if defined(HAVE_SYS_EVENT_H)
  54 #include <sys/event.h>
  55 #endif
  56 #if defined(HAVE_SYS_FILE_H)
  57 #include <sys/file.h>
  58 #endif
  59 #if defined(HAVE_SYS_MMAN_H)
  60 #include <sys/mman.h>
  61 #endif
  62 #if defined(HAVE_SYS_PRCTL_H)
  63 #include <sys/prctl.h>
  64 #endif
  65 #if defined(HAVE_SYS_PTRACE_H)
  66 #include <sys/ptrace.h>
  67 #endif
  68 #include <sys/resource.h>
  69 #include <sys/uio.h>
  70 #include <sys/socket.h>
  71 #include <sys/stat.h>
  72 #include <sys/time.h>
  73 #include <sys/times.h>
  74 #include <sys/wait.h>
  75 #include <sys/un.h>
  76 #if defined(HAVE_SYS_USER_H)
  77 #include <sys/user.h>
  78 #endif
  79 #if defined(HAVE_SYS_UTSNAME_H)
  80 #include <sys/utsname.h>
  81 #endif
  82 #if defined(HAVE_SYS_SELECT_H)
  83 #include <sys/select.h>
  84 #endif
  85 #include <time.h>
  86 #include <unistd.h>
  87 #include <netdb.h>
  88 #include <pwd.h>
  89 #include <grp.h>
  90 #if defined(HAVE_LINUX_FILTER_H)
  91 #include <linux/filter.h>
  92 #endif
  93 #if defined(HAVE_LINUX_IF_ADDR_H)
  94 #include <linux/if_addr.h>
  95 #endif
  96 #if defined(HAVE_LINUX_IF_ETHER_H)
  97 #include <linux/if_ether.h>
  98 #endif
  99 #if defined(HAVE_LINUX_IF_TUN_H)
 100 #include <linux/if_tun.h>
 101 #endif
 102 #if defined(HAVE_LINUX_NETLINK_H)
 103 #include <linux/netlink.h>
 104 #endif
 105 #if defined(HAVE_LINUX_PTRACE_H)
 106 /* Avoid https://sourceware.org/bugzilla/show_bug.cgi?id=762 .  */
 107 #define ia64_fpreg pt_ia64_fpreg
 108 #define pt_all_user_regs pt_ia64_all_user_regs
 109 /* Avoid redefinition of ptrace_peeksiginfo from <sys/ptrace.h>.
 110    https://gcc.gnu.org/PR81324 .  */
 111 #define ptrace_peeksiginfo_args ignore_ptrace_peeksiginfo_args
 112 #include <linux/ptrace.h>
 113 #undef ia64_fpreg
 114 #undef pt_all_user_regs
 115 #undef ptrace_peeksiginfo_args
 116 #endif
 117 #if defined(HAVE_LINUX_RTNETLINK_H)
 118 #include <linux/rtnetlink.h>
 119 #endif
 120 #if defined(HAVE_NET_IF_H)
 121 #include <net/if.h>
 122 #endif
 123 #if defined(HAVE_NET_IF_ARP_H)
 124 #include <net/if_arp.h>
 125 #endif
 126 #if defined(HAVE_NET_ROUTE_H)
 127 #include <net/route.h>
 128 #endif
 129 #if defined (HAVE_NETPACKET_PACKET_H)
 130 #include <netpacket/packet.h>
 131 #endif
 132 #if defined(HAVE_SYS_MOUNT_H)
 133 #include <sys/mount.h>
 134 #endif
 135 #if defined(HAVE_SYS_VFS_H)
 136 #include <sys/vfs.h>
 137 #endif
 138 #if defined(HAVE_STATFS_H)
 139 #include <sys/statfs.h>
 140 #endif
 141 #if defined(HAVE_SYS_TIMEX_H)
 142 #include <sys/timex.h>
 143 #endif
 144 #if defined(HAVE_SYS_SYSINFO_H)
 145 #include <sys/sysinfo.h>
 146 #endif
 147 #if defined(HAVE_USTAT_H)
 148 #include <ustat.h>
 149 #endif
 150 #if defined(HAVE_UTIME_H)
 151 #include <utime.h>
 152 #endif
 153 #if defined(HAVE_LINUX_ETHER_H)
 154 #include <linux/ether.h>
 155 #endif
 156 #if defined(HAVE_LINUX_FS_H)
 157 #include <linux/fs.h>
 158 #endif
 159 #if defined(HAVE_LINUX_REBOOT_H)
 160 #include <linux/reboot.h>
 161 #endif
 162 #if defined(HAVE_SYS_INOTIFY_H)
 163 #include <sys/inotify.h>
 164 #endif
 165 #if defined(HAVE_NETINET_ICMP6_H)
 166 #include <netinet/icmp6.h>
 167 #endif
 168 #if defined(HAVE_SCHED_H)
 169 #include <sched.h>
 170 #endif
 171 #if defined(HAVE_SEMAPHORE_H)
 172 #include <semaphore.h>
 173 #endif
 174 #if defined(HAVE_PORT_H)
 175 #include <port.h>
 176 #endif
 177
 178 #ifdef USE_LIBFFI
 179 #include "ffi.h"
 180 #endif
 181
 182 /* Constants that may only be defined as expressions on some systems,
 183    expressions too complex for -fdump-go-spec to handle.  These are
 184    handled specially below.  */
 185 enum {
 186 #ifdef TIOCGWINSZ
 187   TIOCGWINSZ_val = TIOCGWINSZ,
 188 #endif
 189 #ifdef TIOCSWINSZ
 190   TIOCSWINSZ_val = TIOCSWINSZ,
 191 #endif
 192 #ifdef TIOCNOTTY
 193   TIOCNOTTY_val = TIOCNOTTY,
 194 #endif
 195 #ifdef TIOCSCTTY
 196   TIOCSCTTY_val = TIOCSCTTY,
 197 #endif
 198 #ifdef TIOCGPGRP
 199   TIOCGPGRP_val = TIOCGPGRP,
 200 #endif
 201 #ifdef TIOCSPGRP
 202   TIOCSPGRP_val = TIOCSPGRP,
 203 #endif
 204 #ifdef TIOCGPTN
 205   TIOCGPTN_val = TIOCGPTN,
 206 #endif
 207 #ifdef TIOCSPTLCK
 208   TIOCSPTLCK_val = TIOCSPTLCK,
 209 #endif
 210 #ifdef TIOCGDEV
 211   TIOCGDEV_val = TIOCGDEV,
 212 #endif
 213 #ifdef TIOCSIG
 214   TIOCSIG_val = TIOCSIG,
 215 #endif
 216 #ifdef TCGETS
 217   TCGETS_val = TCGETS,
 218 #endif
 219 #ifdef TCSETS
 220   TCSETS_val = TCSETS,
 221 #endif
 222 #ifdef TUNSETIFF
 223   TUNSETIFF_val = TUNSETIFF,
 224 #endif
 225 #ifdef TUNSETNOCSUM
 226   TUNSETNOCSUM_val = TUNSETNOCSUM,
 227 #endif
 228 #ifdef TUNSETDEBUG
 229   TUNSETDEBUG_val = TUNSETDEBUG,
 230 #endif
 231 #ifdef TUNSETPERSIST
 232   TUNSETPERSIST_val = TUNSETPERSIST,
 233 #endif
 234 #ifdef TUNSETOWNER
 235   TUNSETOWNER_val = TUNSETOWNER,
 236 #endif
 237 #ifdef TUNSETLINK
 238   TUNSETLINK_val = TUNSETLINK,
 239 #endif
 240 #ifdef TUNSETGROUP
 241   TUNSETGROUP_val = TUNSETGROUP,
 242 #endif
 243 #ifdef TUNGETFEATURES
 244   TUNGETFEATURES_val = TUNGETFEATURES,
 245 #endif
 246 #ifdef TUNSETOFFLOAD
 247   TUNSETOFFLOAD_val = TUNSETOFFLOAD,
 248 #endif
 249 #ifdef TUNSETTXFILTER
 250   TUNSETTXFILTER_val = TUNSETTXFILTER,
 251 #endif
 252 #ifdef TUNGETIFF
 253   TUNGETIFF_val = TUNGETIFF,
 254 #endif
 255 #ifdef TUNGETSNDBUF
 256   TUNGETSNDBUF_val = TUNGETSNDBUF,
 257 #endif
 258 #ifdef TUNSETSNDBUF
 259   TUNSETSNDBUF_val = TUNSETSNDBUF,
 260 #endif
 261 #ifdef TUNATTACHFILTER
 262   TUNATTACHFILTER_val = TUNATTACHFILTER,
 263 #endif
 264 #ifdef TUNDETACHFILTER
 265   TUNDETACHFILTER_val = TUNDETACHFILTER,
 266 #endif
 267 #ifdef TUNGETVNETHDRSZ
 268   TUNGETVNETHDRSZ_val = TUNGETVNETHDRSZ,
 269 #endif
 270 #ifdef TUNSETVNETHDRSZ
 271   TUNSETVNETHDRSZ_val = TUNSETVNETHDRSZ,
 272 #endif
 273 #ifdef TUNSETQUEUE
 274   TUNSETQUEUE_val = TUNSETQUEUE,
 275 #endif
 276 #ifdef TUNSETIFINDEX
 277   TUNSETIFINDEX_val = TUNSETIFINDEX,
 278 #endif
 279 #ifdef TUNGETFILTER
 280   TUNGETFILTER_val = TUNGETFILTER,
 281 #endif
 282 #ifdef NLA_HDRLEN
 283   NLA_HDRLEN_val = NLA_HDRLEN,
 284 #endif
 285 };
 286
 287 #if defined(HAVE_SYS_EPOLL_H)
 288 enum {
 289   epoll_data_offset = offsetof(struct epoll_event, data)
 290 };
 291 #endif
 292
 293 // The following section introduces explicit references to types and
 294 // constants of interest to support bootstrapping libgo using a
 295 // compiler that doesn't support -fdump-go-spec (e.g., clang), via
 296 // DWARF-based tools. This process is made more difficult due to the
 297 // fact that clang tries hard to omit types/constants from DWARF if it
 298 // can't find explicit references to them, so here we make sure that
 299 // key items are mentioned in ways that will force them into the
 300 // generated DWARF.
 301
 302 #if defined(__clang__)
 303
 304 // Make a reference to a type
 305 #define TREF(typ) typ typ ## ref
 306
 307 // Make a reference to an opaque type
 308 #define OTREF(typ) typ *typ ## ref
 309
 310 // Make a reference to a struct tag
 311 #define SREF(stag) struct stag stag ## ref
 312
 313 // Make a reference to an enum literal
 314 #define EREF(elit) unsigned elit ## fn(unsigned x) { return x == elit ? 1 : 0; }
 315
 316 //......................................................................
 317
 318 // From dirent.h
 319 SREF(dirent);
 320 SREF(dirent64);
 321 OTREF(DIR);
 322
 323 // From fcntl.h
 324 SREF(flock);
 325 SREF(flock64);
 326
 327 // From ffi headers
 328 SREF(_ffi_type);
 329 TREF(ffi_cif);
 330 TREF(ffi_abi);
 331 TREF(ffi_status);
 332 EREF(FFI_OK);
 333
 334 // From grp.h
 335 SREF(group);
 336
 337 #if defined(HAVE_LINUX_FILTER_H)
 338 // From linux/filter.h
 339 SREF(sock_filter);
 340 SREF(sock_fprog);
 341 #endif
 342
 343 // From linux/if.h
 344 EREF(IFF_UP);
 345
 346 #if defined(HAVE_LINUX_IF_ADDR_H)
 347 // From linux/if_addr.h
 348 SREF(ifaddrmsg);
 349 EREF(IFA_ADDRESS);
 350 #endif
 351
 352 #if defined(HAVE_LINUX_RTNETLINK_H)
 353 // From linux/if_link.h
 354 EREF(IFLA_ADDRESS);
 355 #endif
 356
 357 // From in.h, in6.h, icmp6.h
 358 SREF(ip_mreq);
 359 SREF(ip_mreqn);
 360 SREF(ipv6_mreq);
 361 SREF(ip6_mtuinfo);
 362 SREF(icmp6_filter);
 363 SREF(in_pktinfo);
 364 EREF(IPPROTO_TCP);
 365
 366 #if defined(HAVE_LINUX_RTNETLINK_H)
 367 // From linux/rtnetlink.h
 368 SREF(rtgenmsg);
 369 SREF(rtmsg);
 370 SREF(ifinfomsg);
 371 SREF(rtattr);
 372 SREF(rtnexthop);
 373 EREF(RTM_BASE);
 374 EREF(RTN_UNSPEC);
 375 #endif
 376
 377 // From netdb.h
 378 SREF(addrinfo);
 379
 380 // From netlink.h
 381 SREF(nlattr);
 382 SREF(nlmsgerr);
 383
 384 // From pthread.h and related
 385 TREF(pthread_attr_t);
 386 TREF(pthread_t);
 387 TREF(pthread_mutex_t);
 388 TREF(pthread_mutexattr_t);
 389
 390 // From pwd.h
 391 SREF(passwd);
 392
 393 // From signal.h and related
 394 TREF(sigset_t);
 395 TREF(siginfo_t);
 396 TREF(stack_t);
 397 SREF(sigaction);
 398 SREF(sigstack);
 399 EREF(SI_USER);
 400 EREF(FPE_INTOVF);
 401 EREF(BUS_ADRALN);
 402 EREF(SS_ONSTACK);
 403 EREF(SEGV_MAPERR);
 404
 405 // From stat.h
 406 SREF(stat64);
 407
 408 // From statfs.h
 409 SREF(statfs);
 410 SREF(statfs64);
 411
 412 // From sysinfo.h
 413 SREF(sysinfo);
 414
 415 // From <sys/epoll.h>
 416 #if defined(HAVE_SYS_EPOLL_H)
 417 SREF(epoll_event);
 418 EREF(EPOLLIN);
 419 EREF(epoll_data_offset);
 420 #endif
 421
 422 #if defined(HAVE_SYS_MOUNT_H)
 423 // From sys/mount.h
 424 EREF(MS_PRIVATE);
 425 EREF(MNT_FORCE);
 426 #endif
 427
 428 #if defined(HAVE_SYS_PTRACE_H)
 429 // From <sys/ptrace.h>
 430 SREF(pt_regs);
 431 EREF(PTRACE_PEEKTEXT);
 432 #endif
 433
 434 // From sys/resource.h
 435 SREF(rusage);
 436 SREF(rlimit64);
 437 EREF(RLIMIT_NOFILE);
 438 EREF(PRIO_USER);
 439
 440 // From sys/select.h
 441 TREF(fd_set);
 442
 443 // From sys/socket.h
 444 SREF(msghdr);
 445 SREF(cmsghdr);
 446 SREF(ucred);
 447 EREF(MSG_OOB);
 448 EREF(SCM_RIGHTS);
 449 EREF(SOCK_RAW);
 450 EREF(SHUT_RD);
 451
 452 // From sys/time.h and sys/times.h
 453 SREF(timespec);
 454 SREF(timeval);
 455 SREF(itimerval);
 456 SREF(tms);
 457 EREF(ITIMER_PROF);
 458
 459 #if defined(HAVE_SYS_TIMEX_H)
 460 // From sys/timex.h
 461 SREF(timex);
 462 #endif
 463
 464 // From sys/types.h
 465 TREF(pid_t);
 466 TREF(off_t);
 467 TREF(loff_t);
 468 TREF(size_t);
 469 TREF(ssize_t);
 470 TREF(mode_t);
 471 TREF(dev_t);
 472 TREF(time_t);
 473
 474 // From sys/ucontext.h
 475 TREF(ucontext_t);
 476
 477 #if defined(HAVE_SYS_USER_H)
 478 // From sys/user.h
 479 SREF(user_regs_struct);
 480 #endif
 481
 482 #if defined(HAVE_SYS_UTSNAME_H)
 483 // From sys/utsname.h
 484 SREF(utsname);
 485 #endif
 486
 487 // From termios.h
 488 SREF(termios);
 489
 490 // From uio.h
 491 SREF(iovec);
 492
 493 // From utime.h
 494 SREF(utimbuf);
 495
 496 // From unistd.h
 497 EREF(_PC_NAME_MAX);
 498 EREF(_SC_GETPW_R_SIZE_MAX);
 499
 500 #endif // clang