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 #ifdef SO_RCVTIMEO
 341   SO_RCVTIMEO_val = SO_RCVTIMEO,
 342 #endif
 343 };
 344
 345 // SIOCGIFMTU can't be added in the above enum as it might
 346 // be signed in some OSes.
 347 #ifdef SIOCGIFMTU
 348 enum {
 349   SIOCGIFMTU_val = SIOCGIFMTU,
 350 };
 351 #endif
 352
 353 #if defined(HAVE_SYS_EPOLL_H)
 354 enum {
 355   epoll_data_offset = offsetof(struct epoll_event, data)
 356 };
 357 #endif
 358
 359 // The following section introduces explicit references to types and
 360 // constants of interest to support bootstrapping libgo using a
 361 // compiler that doesn't support -fdump-go-spec (e.g., clang), via
 362 // DWARF-based tools. This process is made more difficult due to the
 363 // fact that clang tries hard to omit types/constants from DWARF if it
 364 // can't find explicit references to them, so here we make sure that
 365 // key items are mentioned in ways that will force them into the
 366 // generated DWARF.
 367
 368 #if defined(__clang__)
 369
 370 // Make a reference to a type
 371 #define TREF(typ) typ typ ## ref
 372
 373 // Make a reference to an opaque type
 374 #define OTREF(typ) typ *typ ## ref
 375
 376 // Make a reference to a struct tag
 377 #define SREF(stag) struct stag stag ## ref
 378
 379 // Make a reference to an enum literal
 380 #define EREF(elit) unsigned elit ## fn(unsigned x) { return x == elit ? 1 : 0; }
 381
 382 //......................................................................
 383
 384 // From dirent.h
 385 SREF(dirent);
 386 SREF(dirent64);
 387 OTREF(DIR);
 388 EREF(DT_UNKNOWN);
 389
 390 // From fcntl.h
 391 SREF(flock);
 392 SREF(flock64);
 393
 394 // From ffi headers
 395 SREF(_ffi_type);
 396 TREF(ffi_cif);
 397 TREF(ffi_abi);
 398 TREF(ffi_status);
 399 EREF(FFI_OK);
 400
 401 // From grp.h
 402 SREF(group);
 403
 404 #if defined(HAVE_LINUX_FILTER_H)
 405 // From linux/filter.h
 406 SREF(sock_filter);
 407 SREF(sock_fprog);
 408 #endif
 409
 410 // From linux/if.h
 411 EREF(IFF_UP);
 412
 413 #if defined(HAVE_LINUX_IF_ADDR_H)
 414 // From linux/if_addr.h
 415 SREF(ifaddrmsg);
 416 EREF(IFA_ADDRESS);
 417 #endif
 418
 419 #if defined(HAVE_LINUX_RTNETLINK_H)
 420 // From linux/if_link.h
 421 EREF(IFLA_ADDRESS);
 422 #endif
 423
 424 // From in.h, in6.h, icmp6.h
 425 SREF(ip_mreq);
 426 SREF(ip_mreqn);
 427 SREF(ipv6_mreq);
 428 SREF(ip6_mtuinfo);
 429 SREF(icmp6_filter);
 430 SREF(in_pktinfo);
 431 EREF(IPPROTO_TCP);
 432
 433 #if defined(HAVE_LINUX_RTNETLINK_H)
 434 // From linux/rtnetlink.h
 435 SREF(rtgenmsg);
 436 SREF(rtmsg);
 437 SREF(ifinfomsg);
 438 SREF(rtattr);
 439 SREF(rtnexthop);
 440 EREF(RTM_BASE);
 441 EREF(RTN_UNSPEC);
 442 #endif
 443
 444 // From netdb.h
 445 SREF(addrinfo);
 446
 447 // From netlink.h
 448 SREF(nlattr);
 449 SREF(nlmsgerr);
 450
 451 // From pthread.h and related
 452 TREF(pthread_attr_t);
 453 TREF(pthread_t);
 454 TREF(pthread_mutex_t);
 455 TREF(pthread_mutexattr_t);
 456
 457 // From pwd.h
 458 SREF(passwd);
 459
 460 // From signal.h and related
 461 TREF(sigset_t);
 462 TREF(siginfo_t);
 463 TREF(stack_t);
 464 SREF(sigaction);
 465 SREF(sigstack);
 466 EREF(SI_USER);
 467 EREF(FPE_INTOVF);
 468 EREF(BUS_ADRALN);
 469 EREF(SS_ONSTACK);
 470 EREF(SEGV_MAPERR);
 471
 472 // From stat.h
 473 SREF(stat64);
 474
 475 // From statfs.h
 476 SREF(statfs);
 477 SREF(statfs64);
 478
 479 // From sysinfo.h
 480 SREF(sysinfo);
 481
 482 // From <sys/epoll.h>
 483 #if defined(HAVE_SYS_EPOLL_H)
 484 SREF(epoll_event);
 485 EREF(EPOLLIN);
 486 EREF(epoll_data_offset);
 487 #endif
 488
 489 #if defined(HAVE_SYS_MOUNT_H)
 490 // From sys/mount.h
 491 EREF(MS_PRIVATE);
 492 EREF(MNT_FORCE);
 493 #endif
 494
 495 #if defined(HAVE_SYS_PTRACE_H)
 496 // From <sys/ptrace.h>
 497 #if defined (__aarch64__)
 498 SREF(user_pt_regs);
 499 #else
 500 SREF(pt_regs);
 501 #endif
 502 EREF(PTRACE_PEEKTEXT);
 503 #endif
 504
 505 // From sys/resource.h
 506 SREF(rusage);
 507 SREF(rlimit64);
 508 EREF(RLIMIT_NOFILE);
 509 EREF(PRIO_USER);
 510 EREF(RUSAGE_SELF);
 511
 512 // From sys/select.h
 513 TREF(fd_set);
 514
 515 // From sys/socket.h
 516 SREF(msghdr);
 517 SREF(cmsghdr);
 518 SREF(ucred);
 519 EREF(MSG_OOB);
 520 EREF(SCM_RIGHTS);
 521 EREF(SOCK_RAW);
 522 EREF(SHUT_RD);
 523
 524 // From sys/time.h and sys/times.h
 525 SREF(timespec);
 526 SREF(timeval);
 527 SREF(itimerval);
 528 SREF(tms);
 529 EREF(ITIMER_PROF);
 530
 531 #if defined(HAVE_SYS_TIMEX_H)
 532 // From sys/timex.h
 533 SREF(timex);
 534 #endif
 535
 536 // From sys/types.h
 537 TREF(pid_t);
 538 TREF(off_t);
 539 TREF(loff_t);
 540 TREF(size_t);
 541 TREF(ssize_t);
 542 TREF(mode_t);
 543 TREF(dev_t);
 544 TREF(time_t);
 545
 546 // From sys/ucontext.h
 547 TREF(ucontext_t);
 548
 549 #if defined(HAVE_SYS_USER_H)
 550 // From sys/user.h
 551 SREF(user_regs_struct);
 552 #endif
 553
 554 #if defined(HAVE_SYS_UTSNAME_H)
 555 // From sys/utsname.h
 556 SREF(utsname);
 557 #endif
 558
 559 // From termios.h
 560 SREF(termios);
 561
 562 // From uio.h
 563 SREF(iovec);
 564
 565 // From utime.h
 566 SREF(utimbuf);
 567
 568 // From unistd.h
 569 EREF(_PC_NAME_MAX);
 570 EREF(_SC_GETPW_R_SIZE_MAX);
 571
 572 #endif // clang