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