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_UTIME_H)
 148 #include <utime.h>
 149 #endif
 150 #if defined(HAVE_LINUX_ETHER_H)
 151 #include <linux/ether.h>
 152 #endif
 153 #if defined(HAVE_LINUX_FS_H)
 154 #include <linux/fs.h>
 155 #endif
 156 #if defined(HAVE_LINUX_REBOOT_H)
 157 #include <linux/reboot.h>
 158 #endif
 159 #if defined(HAVE_SYS_INOTIFY_H)
 160 #include <sys/inotify.h>
 161 #endif
 162 #if defined(HAVE_NETINET_ICMP6_H)
 163 #include <netinet/icmp6.h>
 164 #endif
 165 #if defined(HAVE_SCHED_H)
 166 #include <sched.h>
 167 #endif
 168 #if defined(HAVE_SEMAPHORE_H)
 169 #include <semaphore.h>
 170 #endif
 171 #if defined(HAVE_PORT_H)
 172 #include <port.h>
 173 #endif
 174
 175 #ifdef USE_LIBFFI
 176 #include "ffi.h"
 177 #endif
 178
 179 /* Constants that may only be defined as expressions on some systems,
 180    expressions too complex for -fdump-go-spec to handle.  These are
 181    handled specially below.  */
 182 enum {
 183 #ifdef TIOCGWINSZ
 184   TIOCGWINSZ_val = TIOCGWINSZ,
 185 #endif
 186 #ifdef TIOCSWINSZ
 187   TIOCSWINSZ_val = TIOCSWINSZ,
 188 #endif
 189 #ifdef TIOCNOTTY
 190   TIOCNOTTY_val = TIOCNOTTY,
 191 #endif
 192 #ifdef TIOCSCTTY
 193   TIOCSCTTY_val = TIOCSCTTY,
 194 #endif
 195 #ifdef TIOCGPGRP
 196   TIOCGPGRP_val = TIOCGPGRP,
 197 #endif
 198 #ifdef TIOCSPGRP
 199   TIOCSPGRP_val = TIOCSPGRP,
 200 #endif
 201 #ifdef TIOCGPTN
 202   TIOCGPTN_val = TIOCGPTN,
 203 #endif
 204 #ifdef TIOCSPTLCK
 205   TIOCSPTLCK_val = TIOCSPTLCK,
 206 #endif
 207 #ifdef TIOCGDEV
 208   TIOCGDEV_val = TIOCGDEV,
 209 #endif
 210 #ifdef TIOCSIG
 211   TIOCSIG_val = TIOCSIG,
 212 #endif
 213 #ifdef TCGETS
 214   TCGETS_val = TCGETS,
 215 #endif
 216 #ifdef TCSETS
 217   TCSETS_val = TCSETS,
 218 #endif
 219 #ifdef TUNSETIFF
 220   TUNSETIFF_val = TUNSETIFF,
 221 #endif
 222 #ifdef TUNSETNOCSUM
 223   TUNSETNOCSUM_val = TUNSETNOCSUM,
 224 #endif
 225 #ifdef TUNSETDEBUG
 226   TUNSETDEBUG_val = TUNSETDEBUG,
 227 #endif
 228 #ifdef TUNSETPERSIST
 229   TUNSETPERSIST_val = TUNSETPERSIST,
 230 #endif
 231 #ifdef TUNSETOWNER
 232   TUNSETOWNER_val = TUNSETOWNER,
 233 #endif
 234 #ifdef TUNSETLINK
 235   TUNSETLINK_val = TUNSETLINK,
 236 #endif
 237 #ifdef TUNSETGROUP
 238   TUNSETGROUP_val = TUNSETGROUP,
 239 #endif
 240 #ifdef TUNGETFEATURES
 241   TUNGETFEATURES_val = TUNGETFEATURES,
 242 #endif
 243 #ifdef TUNSETOFFLOAD
 244   TUNSETOFFLOAD_val = TUNSETOFFLOAD,
 245 #endif
 246 #ifdef TUNSETTXFILTER
 247   TUNSETTXFILTER_val = TUNSETTXFILTER,
 248 #endif
 249 #ifdef TUNGETIFF
 250   TUNGETIFF_val = TUNGETIFF,
 251 #endif
 252 #ifdef TUNGETSNDBUF
 253   TUNGETSNDBUF_val = TUNGETSNDBUF,
 254 #endif
 255 #ifdef TUNSETSNDBUF
 256   TUNSETSNDBUF_val = TUNSETSNDBUF,
 257 #endif
 258 #ifdef TUNATTACHFILTER
 259   TUNATTACHFILTER_val = TUNATTACHFILTER,
 260 #endif
 261 #ifdef TUNDETACHFILTER
 262   TUNDETACHFILTER_val = TUNDETACHFILTER,
 263 #endif
 264 #ifdef TUNGETVNETHDRSZ
 265   TUNGETVNETHDRSZ_val = TUNGETVNETHDRSZ,
 266 #endif
 267 #ifdef TUNSETVNETHDRSZ
 268   TUNSETVNETHDRSZ_val = TUNSETVNETHDRSZ,
 269 #endif
 270 #ifdef TUNSETQUEUE
 271   TUNSETQUEUE_val = TUNSETQUEUE,
 272 #endif
 273 #ifdef TUNSETIFINDEX
 274   TUNSETIFINDEX_val = TUNSETIFINDEX,
 275 #endif
 276 #ifdef TUNGETFILTER
 277   TUNGETFILTER_val = TUNGETFILTER,
 278 #endif
 279 #ifdef NLA_HDRLEN
 280   NLA_HDRLEN_val = NLA_HDRLEN,
 281 #endif
 282 };
 283
 284 #if defined(HAVE_SYS_EPOLL_H)
 285 enum {
 286   epoll_data_offset = offsetof(struct epoll_event, data)
 287 };
 288 #endif
 289
 290 // The following section introduces explicit references to types and
 291 // constants of interest to support bootstrapping libgo using a
 292 // compiler that doesn't support -fdump-go-spec (e.g., clang), via
 293 // DWARF-based tools. This process is made more difficult due to the
 294 // fact that clang tries hard to omit types/constants from DWARF if it
 295 // can't find explicit references to them, so here we make sure that
 296 // key items are mentioned in ways that will force them into the
 297 // generated DWARF.
 298
 299 #if defined(__clang__)
 300
 301 // Make a reference to a type
 302 #define TREF(typ) typ typ ## ref
 303
 304 // Make a reference to an opaque type
 305 #define OTREF(typ) typ *typ ## ref
 306
 307 // Make a reference to a struct tag
 308 #define SREF(stag) struct stag stag ## ref
 309
 310 // Make a reference to an enum literal
 311 #define EREF(elit) unsigned elit ## fn(unsigned x) { return x == elit ? 1 : 0; }
 312
 313 //......................................................................
 314
 315 // From dirent.h
 316 SREF(dirent);
 317 SREF(dirent64);
 318 OTREF(DIR);
 319
 320 // From fcntl.h
 321 SREF(flock);
 322 SREF(flock64);
 323
 324 // From ffi headers
 325 SREF(_ffi_type);
 326 TREF(ffi_cif);
 327 TREF(ffi_abi);
 328 TREF(ffi_status);
 329 EREF(FFI_OK);
 330
 331 // From grp.h
 332 SREF(group);
 333
 334 #if defined(HAVE_LINUX_FILTER_H)
 335 // From linux/filter.h
 336 SREF(sock_filter);
 337 SREF(sock_fprog);
 338 #endif
 339
 340 // From linux/if.h
 341 EREF(IFF_UP);
 342
 343 #if defined(HAVE_LINUX_IF_ADDR_H)
 344 // From linux/if_addr.h
 345 SREF(ifaddrmsg);
 346 EREF(IFA_ADDRESS);
 347 #endif
 348
 349 #if defined(HAVE_LINUX_RTNETLINK_H)
 350 // From linux/if_link.h
 351 EREF(IFLA_ADDRESS);
 352 #endif
 353
 354 // From in.h, in6.h, icmp6.h
 355 SREF(ip_mreq);
 356 SREF(ip_mreqn);
 357 SREF(ipv6_mreq);
 358 SREF(ip6_mtuinfo);
 359 SREF(icmp6_filter);
 360 SREF(in_pktinfo);
 361 EREF(IPPROTO_TCP);
 362
 363 #if defined(HAVE_LINUX_RTNETLINK_H)
 364 // From linux/rtnetlink.h
 365 SREF(rtgenmsg);
 366 SREF(rtmsg);
 367 SREF(ifinfomsg);
 368 SREF(rtattr);
 369 SREF(rtnexthop);
 370 EREF(RTM_BASE);
 371 EREF(RTN_UNSPEC);
 372 #endif
 373
 374 // From netdb.h
 375 SREF(addrinfo);
 376
 377 // From netlink.h
 378 SREF(nlattr);
 379 SREF(nlmsgerr);
 380
 381 // From pthread.h and related
 382 TREF(pthread_attr_t);
 383 TREF(pthread_t);
 384 TREF(pthread_mutex_t);
 385 TREF(pthread_mutexattr_t);
 386
 387 // From pwd.h
 388 SREF(passwd);
 389
 390 // From signal.h and related
 391 TREF(sigset_t);
 392 TREF(siginfo_t);
 393 TREF(stack_t);
 394 SREF(sigaction);
 395 SREF(sigstack);
 396 EREF(SI_USER);
 397 EREF(FPE_INTOVF);
 398 EREF(BUS_ADRALN);
 399 EREF(SS_ONSTACK);
 400 EREF(SEGV_MAPERR);
 401
 402 // From stat.h
 403 SREF(stat64);
 404
 405 // From statfs.h
 406 SREF(statfs);
 407 SREF(statfs64);
 408
 409 // From sysinfo.h
 410 SREF(sysinfo);
 411
 412 // From <sys/epoll.h>
 413 #if defined(HAVE_SYS_EPOLL_H)
 414 SREF(epoll_event);
 415 EREF(EPOLLIN);
 416 EREF(epoll_data_offset);
 417 #endif
 418
 419 #if defined(HAVE_SYS_MOUNT_H)
 420 // From sys/mount.h
 421 EREF(MS_PRIVATE);
 422 EREF(MNT_FORCE);
 423 #endif
 424
 425 #if defined(HAVE_SYS_PTRACE_H)
 426 // From <sys/ptrace.h>
 427 SREF(pt_regs);
 428 EREF(PTRACE_PEEKTEXT);
 429 #endif
 430
 431 // From sys/resource.h
 432 SREF(rusage);
 433 SREF(rlimit64);
 434 EREF(RLIMIT_NOFILE);
 435 EREF(PRIO_USER);
 436
 437 // From sys/select.h
 438 TREF(fd_set);
 439
 440 // From sys/socket.h
 441 SREF(msghdr);
 442 SREF(cmsghdr);
 443 SREF(ucred);
 444 EREF(MSG_OOB);
 445 EREF(SCM_RIGHTS);
 446 EREF(SOCK_RAW);
 447 EREF(SHUT_RD);
 448
 449 // From sys/time.h and sys/times.h
 450 SREF(timespec);
 451 SREF(timeval);
 452 SREF(itimerval);
 453 SREF(tms);
 454 EREF(ITIMER_PROF);
 455
 456 #if defined(HAVE_SYS_TIMEX_H)
 457 // From sys/timex.h
 458 SREF(timex);
 459 #endif
 460
 461 // From sys/types.h
 462 TREF(pid_t);
 463 TREF(off_t);
 464 TREF(loff_t);
 465 TREF(size_t);
 466 TREF(ssize_t);
 467 TREF(mode_t);
 468 TREF(dev_t);
 469 TREF(time_t);
 470
 471 // From sys/ucontext.h
 472 TREF(ucontext_t);
 473
 474 #if defined(HAVE_SYS_USER_H)
 475 // From sys/user.h
 476 SREF(user_regs_struct);
 477 #endif
 478
 479 #if defined(HAVE_SYS_UTSNAME_H)
 480 // From sys/utsname.h
 481 SREF(utsname);
 482 #endif
 483
 484 // From termios.h
 485 SREF(termios);
 486
 487 // From uio.h
 488 SREF(iovec);
 489
 490 // From utime.h
 491 SREF(utimbuf);
 492
 493 // From unistd.h
 494 EREF(_PC_NAME_MAX);
 495 EREF(_SC_GETPW_R_SIZE_MAX);
 496
 497 #endif // clang