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 <stdlib.h>
  14 #include <sys/types.h>
  15 #include <dirent.h>
  16 #include <errno.h>
  17 #include <fcntl.h>
  18 #include <ucontext.h>
  19 #include <netinet/in.h>
  20 /* <netinet/tcp.h> needs u_char/u_short, but <sys/bsd_types> is only
  21    included by <netinet/in.h> if _SGIAPI (i.e. _SGI_SOURCE
  22    && !_XOPEN_SOURCE.
  23    <sys/termios.h> only defines TIOCNOTTY if !_XOPEN_SOURCE, while
  24    <sys/ttold.h> does so unconditionally.  */
  25 #ifdef __sgi__
  26 #include <sys/bsd_types.h>
  27 #include <sys/ttold.h>
  28 #endif
  29 #include <netinet/tcp.h>
  30 #if defined(HAVE_NETINET_IN_SYSTM_H)
  31 #include <netinet/in_systm.h>
  32 #endif
  33 #if defined(HAVE_NETINET_IP_H)
  34 #include <netinet/ip.h>
  35 #endif
  36 #if defined(HAVE_NETINET_IP_MROUTE_H)
  37 #include <netinet/ip_mroute.h>
  38 #endif
  39 #if defined(HAVE_NETINET_IF_ETHER_H)
  40 #include <netinet/if_ether.h>
  41 #endif
  42 #include <signal.h>
  43 #include <sys/ioctl.h>
  44 #include <termios.h>
  45 #if defined(HAVE_SYSCALL_H)
  46 #include <syscall.h>
  47 #endif
  48 #if defined(HAVE_SYS_SYSCALL_H)
  49 #include <sys/syscall.h>
  50 #endif
  51 #if defined(HAVE_SYS_SYSCTL_H)
  52 #include <sys/sysctl.h>
  53 #endif
  54 #if defined(HAVE_SYS_EPOLL_H)
  55 #include <sys/epoll.h>
  56 #endif
  57 #if defined(HAVE_SYS_EVENT_H)
  58 #include <sys/event.h>
  59 #endif
  60 #if defined(HAVE_SYS_FILE_H)
  61 #include <sys/file.h>
  62 #endif
  63 #if defined(HAVE_SYS_MMAN_H)
  64 #include <sys/mman.h>
  65 #endif
  66 #if defined(HAVE_SYS_PRCTL_H)
  67 #include <sys/prctl.h>
  68 #endif
  69 #if defined(HAVE_SYS_PTRACE_H)
  70 #include <sys/ptrace.h>
  71 #endif
  72 #include <sys/resource.h>
  73 #include <sys/uio.h>
  74 #include <sys/socket.h>
  75 #include <sys/stat.h>
  76 #include <sys/time.h>
  77 #include <sys/times.h>
  78 #include <sys/wait.h>
  79 #include <sys/un.h>
  80 #if defined(HAVE_SYS_USER_H)
  81 #include <sys/user.h>
  82 #endif
  83 #if defined(HAVE_SYS_UTSNAME_H)
  84 #include <sys/utsname.h>
  85 #endif
  86 #if defined(HAVE_SYS_SELECT_H)
  87 #include <sys/select.h>
  88 #endif
  89 #include <time.h>
  90 #include <unistd.h>
  91 #include <netdb.h>
  92 #include <pwd.h>
  93 #include <grp.h>
  94 #if defined(HAVE_LINUX_FILTER_H)
  95 #include <linux/filter.h>
  96 #endif
  97 #if defined(HAVE_LINUX_IF_ADDR_H)
  98 #include <linux/if_addr.h>
  99 #endif
 100 #if defined(HAVE_LINUX_IF_ETHER_H)
 101 #include <linux/if_ether.h>
 102 #endif
 103 #if defined(HAVE_LINUX_IF_TUN_H)
 104 #include <linux/if_tun.h>
 105 #endif
 106 #if defined(HAVE_LINUX_NETLINK_H)
 107 #include <linux/netlink.h>
 108 #endif
 109 #if defined(HAVE_LINUX_PTRACE_H)
 110 /* Avoid https://sourceware.org/bugzilla/show_bug.cgi?id=762 .  */
 111 #define ia64_fpreg pt_ia64_fpreg
 112 #define pt_all_user_regs pt_ia64_all_user_regs
 113 /* Avoid redefinition of ptrace_peeksiginfo from <sys/ptrace.h>.
 114    https://gcc.gnu.org/PR81324 .  */
 115 #define ptrace_peeksiginfo_args ignore_ptrace_peeksiginfo_args
 116 #include <linux/ptrace.h>
 117 #undef ia64_fpreg
 118 #undef pt_all_user_regs
 119 #undef ptrace_peeksiginfo_args
 120 #endif
 121 #if defined(HAVE_LINUX_RTNETLINK_H)
 122 #include <linux/rtnetlink.h>
 123 #endif
 124 #if defined(HAVE_NET_BPF_H)
 125 #include <net/bpf.h>
 126 #endif
 127 #if defined(HAVE_NET_IF_H)
 128 #include <net/if.h>
 129 #endif
 130 #if defined(HAVE_NET_IF_ARP_H)
 131 #include <net/if_arp.h>
 132 #endif
 133 #if defined(HAVE_NET_ROUTE_H)
 134 #include <net/route.h>
 135 #endif
 136 #if defined (HAVE_NETPACKET_PACKET_H)
 137 #include <netpacket/packet.h>
 138 #endif
 139 #if defined(HAVE_SYS_MOUNT_H)
 140 #include <sys/mount.h>
 141 #endif
 142 #if defined(HAVE_SYS_VFS_H)
 143 #include <sys/vfs.h>
 144 #endif
 145 #if defined(HAVE_STATFS_H)
 146 #include <sys/statfs.h>
 147 #endif
 148 #if defined(HAVE_SYS_TIMEX_H)
 149 #include <sys/timex.h>
 150 #endif
 151 #if defined(HAVE_SYS_SYSINFO_H)
 152 #include <sys/sysinfo.h>
 153 #endif
 154 #if defined(HAVE_UTIME_H)
 155 #include <utime.h>
 156 #endif
 157 #if defined(HAVE_LINUX_ETHER_H)
 158 #include <linux/ether.h>
 159 #endif
 160 #if defined(HAVE_LINUX_FS_H)
 161 #include <linux/fs.h>
 162 #endif
 163 #if defined(HAVE_LINUX_REBOOT_H)
 164 #include <linux/reboot.h>
 165 #endif
 166 #if defined(HAVE_SYS_INOTIFY_H)
 167 #include <sys/inotify.h>
 168 #endif
 169 #if defined(HAVE_NETINET_ICMP6_H)
 170 #include <netinet/icmp6.h>
 171 #endif
 172 #if defined(HAVE_SCHED_H)
 173 #include <sched.h>
 174 #endif
 175 #if defined(HAVE_SEMAPHORE_H)
 176 #include <semaphore.h>
 177 #endif
 178 #if defined(HAVE_PORT_H)
 179 #include <port.h>
 180 #endif
 181 #if defined(HAVE_LWP_H)
 182 #include <lwp.h>
 183 #endif
 184
 185 #ifdef USE_LIBFFI
 186 #include "ffi.h"
 187 #endif
 188
 189 /* Constants that may only be defined as expressions on some systems,
 190    expressions too complex for -fdump-go-spec to handle.  These are
 191    handled specially below.  */
 192 enum {
 193 #ifdef TIOCGWINSZ
 194   TIOCGWINSZ_val = TIOCGWINSZ,
 195 #endif
 196 #ifdef TIOCSWINSZ
 197   TIOCSWINSZ_val = TIOCSWINSZ,
 198 #endif
 199 #ifdef TIOCNOTTY
 200   TIOCNOTTY_val = TIOCNOTTY,
 201 #endif
 202 #ifdef TIOCSCTTY
 203   TIOCSCTTY_val = TIOCSCTTY,
 204 #endif
 205 #ifdef TIOCGPGRP
 206   TIOCGPGRP_val = TIOCGPGRP,
 207 #endif
 208 #ifdef TIOCSPGRP
 209   TIOCSPGRP_val = TIOCSPGRP,
 210 #endif
 211 #ifdef TIOCGPTN
 212   TIOCGPTN_val = TIOCGPTN,
 213 #endif
 214 #ifdef TIOCSPTLCK
 215   TIOCSPTLCK_val = TIOCSPTLCK,
 216 #endif
 217 #ifdef TIOCGDEV
 218   TIOCGDEV_val = TIOCGDEV,
 219 #endif
 220 #ifdef TIOCSIG
 221   TIOCSIG_val = TIOCSIG,
 222 #endif
 223 #ifdef TCGETS
 224   TCGETS_val = TCGETS,
 225 #endif
 226 #ifdef TCSETS
 227   TCSETS_val = TCSETS,
 228 #endif
 229 #ifdef TUNSETIFF
 230   TUNSETIFF_val = TUNSETIFF,
 231 #endif
 232 #ifdef TUNSETNOCSUM
 233   TUNSETNOCSUM_val = TUNSETNOCSUM,
 234 #endif
 235 #ifdef TUNSETDEBUG
 236   TUNSETDEBUG_val = TUNSETDEBUG,
 237 #endif
 238 #ifdef TUNSETPERSIST
 239   TUNSETPERSIST_val = TUNSETPERSIST,
 240 #endif
 241 #ifdef TUNSETOWNER
 242   TUNSETOWNER_val = TUNSETOWNER,
 243 #endif
 244 #ifdef TUNSETLINK
 245   TUNSETLINK_val = TUNSETLINK,
 246 #endif
 247 #ifdef TUNSETGROUP
 248   TUNSETGROUP_val = TUNSETGROUP,
 249 #endif
 250 #ifdef TUNGETFEATURES
 251   TUNGETFEATURES_val = TUNGETFEATURES,
 252 #endif
 253 #ifdef TUNSETOFFLOAD
 254   TUNSETOFFLOAD_val = TUNSETOFFLOAD,
 255 #endif
 256 #ifdef TUNSETTXFILTER
 257   TUNSETTXFILTER_val = TUNSETTXFILTER,
 258 #endif
 259 #ifdef TUNGETIFF
 260   TUNGETIFF_val = TUNGETIFF,
 261 #endif
 262 #ifdef TUNGETSNDBUF
 263   TUNGETSNDBUF_val = TUNGETSNDBUF,
 264 #endif
 265 #ifdef TUNSETSNDBUF
 266   TUNSETSNDBUF_val = TUNSETSNDBUF,
 267 #endif
 268 #ifdef TUNATTACHFILTER
 269   TUNATTACHFILTER_val = TUNATTACHFILTER,
 270 #endif
 271 #ifdef TUNDETACHFILTER
 272   TUNDETACHFILTER_val = TUNDETACHFILTER,
 273 #endif
 274 #ifdef TUNGETVNETHDRSZ
 275   TUNGETVNETHDRSZ_val = TUNGETVNETHDRSZ,
 276 #endif
 277 #ifdef TUNSETVNETHDRSZ
 278   TUNSETVNETHDRSZ_val = TUNSETVNETHDRSZ,
 279 #endif
 280 #ifdef TUNSETQUEUE
 281   TUNSETQUEUE_val = TUNSETQUEUE,
 282 #endif
 283 #ifdef TUNSETIFINDEX
 284   TUNSETIFINDEX_val = TUNSETIFINDEX,
 285 #endif
 286 #ifdef TUNGETFILTER
 287   TUNGETFILTER_val = TUNGETFILTER,
 288 #endif
 289 #ifdef NLA_HDRLEN
 290   NLA_HDRLEN_val = NLA_HDRLEN,
 291 #endif
 292 #ifdef BIOCFLUSH
 293   BIOCFLUSH_val = BIOCFLUSH,
 294 #endif
 295 #ifdef BIOCGBLEN
 296   BIOCGBLEN_val = BIOCGBLEN,
 297 #endif
 298 #ifdef BIOCGDLT
 299   BIOCGDLT_val = BIOCGDLT,
 300 #endif
 301 #ifdef BIOCGETIF
 302   BIOCGETIF_val = BIOCGETIF,
 303 #endif
 304 #ifdef BIOCGHDRCMPLT
 305   BIOCGHDRCMPLT_val = BIOCGHDRCMPLT,
 306 #endif
 307 #ifdef BIOCGRTIMEOUT
 308   BIOCGRTIMEOUT_val = BIOCGRTIMEOUT,
 309 #endif
 310 #ifdef BIOCGSTATS
 311   BIOCGSTATS_val = BIOCGSTATS,
 312 #endif
 313 #ifdef BIOCIMMEDIATE
 314   BIOCIMMEDIATE_val = BIOCIMMEDIATE,
 315 #endif
 316 #ifdef BIOCPROMISC
 317   BIOCPROMISC_val = BIOCPROMISC,
 318 #endif
 319 #ifdef BIOCSBLEN
 320   BIOCSBLEN_val = BIOCSBLEN,
 321 #endif
 322 #ifdef BIOCSDLT
 323   BIOCSDLT_val = BIOCSDLT,
 324 #endif
 325 #ifdef BIOCSETF
 326   BIOCSETF_val = BIOCSETF,
 327 #endif
 328 #ifdef BIOCSETIF
 329   BIOCSETIF_val = BIOCSETIF,
 330 #endif
 331 #ifdef BIOCSHDRCMPLT
 332   BIOCSHDRCMPLT_val = BIOCSHDRCMPLT,
 333 #endif
 334 #ifdef BIOCSRTIMEOUT
 335   BIOCSRTIMEOUT_val = BIOCSRTIMEOUT,
 336 #endif
 337 #ifdef BIOCVERSION
 338   BIOCVERSION_val = BIOCVERSION,
 339 #endif
 340 };
 341
 342 // SIOCGIFMTU can't be added in the above enum as it might
 343 // be signed in some OSes.
 344 #ifdef SIOCGIFMTU
 345 enum {
 346   SIOCGIFMTU_val = SIOCGIFMTU,
 347 };
 348 #endif
 349
 350 #if defined(HAVE_SYS_EPOLL_H)
 351 enum {
 352   epoll_data_offset = offsetof(struct epoll_event, data)
 353 };
 354 #endif
 355
 356 // The following section introduces explicit references to types and
 357 // constants of interest to support bootstrapping libgo using a
 358 // compiler that doesn't support -fdump-go-spec (e.g., clang), via
 359 // DWARF-based tools. This process is made more difficult due to the
 360 // fact that clang tries hard to omit types/constants from DWARF if it
 361 // can't find explicit references to them, so here we make sure that
 362 // key items are mentioned in ways that will force them into the
 363 // generated DWARF.
 364
 365 #if defined(__clang__)
 366
 367 // Make a reference to a type
 368 #define TREF(typ) typ typ ## ref
 369
 370 // Make a reference to an opaque type
 371 #define OTREF(typ) typ *typ ## ref
 372
 373 // Make a reference to a struct tag
 374 #define SREF(stag) struct stag stag ## ref
 375
 376 // Make a reference to an enum literal
 377 #define EREF(elit) unsigned elit ## fn(unsigned x) { return x == elit ? 1 : 0; }
 378
 379 //......................................................................
 380
 381 // From dirent.h
 382 SREF(dirent);
 383 SREF(dirent64);
 384 OTREF(DIR);
 385 EREF(DT_UNKNOWN);
 386
 387 // From fcntl.h
 388 SREF(flock);
 389 SREF(flock64);
 390
 391 // From ffi headers
 392 SREF(_ffi_type);
 393 TREF(ffi_cif);
 394 TREF(ffi_abi);
 395 TREF(ffi_status);
 396 EREF(FFI_OK);
 397
 398 // From grp.h
 399 SREF(group);
 400
 401 #if defined(HAVE_LINUX_FILTER_H)
 402 // From linux/filter.h
 403 SREF(sock_filter);
 404 SREF(sock_fprog);
 405 #endif
 406
 407 // From linux/if.h
 408 EREF(IFF_UP);
 409
 410 #if defined(HAVE_LINUX_IF_ADDR_H)
 411 // From linux/if_addr.h
 412 SREF(ifaddrmsg);
 413 EREF(IFA_ADDRESS);
 414 #endif
 415
 416 #if defined(HAVE_LINUX_RTNETLINK_H)
 417 // From linux/if_link.h
 418 EREF(IFLA_ADDRESS);
 419 #endif
 420
 421 // From in.h, in6.h, icmp6.h
 422 SREF(ip_mreq);
 423 SREF(ip_mreqn);
 424 SREF(ipv6_mreq);
 425 SREF(ip6_mtuinfo);
 426 SREF(icmp6_filter);
 427 SREF(in_pktinfo);
 428 EREF(IPPROTO_TCP);
 429
 430 #if defined(HAVE_LINUX_RTNETLINK_H)
 431 // From linux/rtnetlink.h
 432 SREF(rtgenmsg);
 433 SREF(rtmsg);
 434 SREF(ifinfomsg);
 435 SREF(rtattr);
 436 SREF(rtnexthop);
 437 EREF(RTM_BASE);
 438 EREF(RTN_UNSPEC);
 439 #endif
 440
 441 // From netdb.h
 442 SREF(addrinfo);
 443
 444 // From netlink.h
 445 SREF(nlattr);
 446 SREF(nlmsgerr);
 447
 448 // From pthread.h and related
 449 TREF(pthread_attr_t);
 450 TREF(pthread_t);
 451 TREF(pthread_mutex_t);
 452 TREF(pthread_mutexattr_t);
 453
 454 // From pwd.h
 455 SREF(passwd);
 456
 457 // From signal.h and related
 458 TREF(sigset_t);
 459 TREF(siginfo_t);
 460 TREF(stack_t);
 461 SREF(sigaction);
 462 SREF(sigstack);
 463 EREF(SI_USER);
 464 EREF(FPE_INTOVF);
 465 EREF(BUS_ADRALN);
 466 EREF(SS_ONSTACK);
 467 EREF(SEGV_MAPERR);
 468
 469 // From stat.h
 470 SREF(stat64);
 471
 472 // From statfs.h
 473 SREF(statfs);
 474 SREF(statfs64);
 475
 476 // From sysinfo.h
 477 SREF(sysinfo);
 478
 479 // From <sys/epoll.h>
 480 #if defined(HAVE_SYS_EPOLL_H)
 481 SREF(epoll_event);
 482 EREF(EPOLLIN);
 483 EREF(epoll_data_offset);
 484 #endif
 485
 486 #if defined(HAVE_SYS_MOUNT_H)
 487 // From sys/mount.h
 488 EREF(MS_PRIVATE);
 489 EREF(MNT_FORCE);
 490 #endif
 491
 492 #if defined(HAVE_SYS_PTRACE_H)
 493 // From <sys/ptrace.h>
 494 #if defined (__aarch64__)
 495 SREF(user_pt_regs);
 496 #else
 497 SREF(pt_regs);
 498 #endif
 499 EREF(PTRACE_PEEKTEXT);
 500 #endif
 501
 502 // From sys/resource.h
 503 SREF(rusage);
 504 SREF(rlimit64);
 505 EREF(RLIMIT_NOFILE);
 506 EREF(PRIO_USER);
 507 EREF(RUSAGE_SELF);
 508
 509 // From sys/select.h
 510 TREF(fd_set);
 511
 512 // From sys/socket.h
 513 SREF(msghdr);
 514 SREF(cmsghdr);
 515 SREF(ucred);
 516 EREF(MSG_OOB);
 517 EREF(SCM_RIGHTS);
 518 EREF(SOCK_RAW);
 519 EREF(SHUT_RD);
 520
 521 // From sys/time.h and sys/times.h
 522 SREF(timespec);
 523 SREF(timeval);
 524 SREF(itimerval);
 525 SREF(tms);
 526 EREF(ITIMER_PROF);
 527
 528 #if defined(HAVE_SYS_TIMEX_H)
 529 // From sys/timex.h
 530 SREF(timex);
 531 #endif
 532
 533 // From sys/types.h
 534 TREF(pid_t);
 535 TREF(off_t);
 536 TREF(loff_t);
 537 TREF(size_t);
 538 TREF(ssize_t);
 539 TREF(mode_t);
 540 TREF(dev_t);
 541 TREF(time_t);
 542
 543 // From sys/ucontext.h
 544 TREF(ucontext_t);
 545
 546 #if defined(HAVE_SYS_USER_H)
 547 // From sys/user.h
 548 SREF(user_regs_struct);
 549 #endif
 550
 551 #if defined(HAVE_SYS_UTSNAME_H)
 552 // From sys/utsname.h
 553 SREF(utsname);
 554 #endif
 555
 556 // From termios.h
 557 SREF(termios);
 558
 559 // From uio.h
 560 SREF(iovec);
 561
 562 // From utime.h
 563 SREF(utimbuf);
 564
 565 // From unistd.h
 566 EREF(_PC_NAME_MAX);
 567 EREF(_SC_GETPW_R_SIZE_MAX);
 568
 569 #endif // clang