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 <stdio.h>
  15 #include <sys/types.h>
  16 #include <dirent.h>
  17 #include <errno.h>
  18 #include <fcntl.h>
  19 #include <ucontext.h>
  20 #include <netinet/in.h>
  21 /* <netinet/tcp.h> needs u_char/u_short, but <sys/bsd_types> is only
  22    included by <netinet/in.h> if _SGIAPI (i.e. _SGI_SOURCE
  23    && !_XOPEN_SOURCE.
  24    <sys/termios.h> only defines TIOCNOTTY if !_XOPEN_SOURCE, while
  25    <sys/ttold.h> does so unconditionally.  */
  26 #ifdef __sgi__
  27 #include <sys/bsd_types.h>
  28 #include <sys/ttold.h>
  29 #endif
  30 #include <netinet/tcp.h>
  31 #if defined(HAVE_NETINET_IN_SYSTM_H)
  32 #include <netinet/in_systm.h>
  33 #endif
  34 #if defined(HAVE_NETINET_IP_H)
  35 #include <netinet/ip.h>
  36 #endif
  37 #if defined(HAVE_NETINET_IP_MROUTE_H)
  38 #include <netinet/ip_mroute.h>
  39 #endif
  40 #if defined(HAVE_NETINET_IF_ETHER_H)
  41 #include <netinet/if_ether.h>
  42 #endif
  43 #include <signal.h>
  44 #include <sys/ioctl.h>
  45 #include <termios.h>
  46 #if defined(HAVE_SYSCALL_H)
  47 #include <syscall.h>
  48 #endif
  49 #if defined(HAVE_SYS_SYSCALL_H)
  50 #include <sys/syscall.h>
  51 #endif
  52 #if defined(HAVE_SYS_SYSCTL_H)
  53 #include <sys/sysctl.h>
  54 #endif
  55 #if defined(HAVE_SYS_EPOLL_H)
  56 #include <sys/epoll.h>
  57 #endif
  58 #if defined(HAVE_SYS_EVENT_H)
  59 #include <sys/event.h>
  60 #endif
  61 #if defined(HAVE_SYS_FILE_H)
  62 #include <sys/file.h>
  63 #endif
  64 #if defined(HAVE_SYS_MMAN_H)
  65 #include <sys/mman.h>
  66 #endif
  67 #if defined(HAVE_SYS_PRCTL_H)
  68 #include <sys/prctl.h>
  69 #endif
  70 #if defined(HAVE_SYS_PTRACE_H)
  71 #include <sys/ptrace.h>
  72 #endif
  73 #include <sys/resource.h>
  74 #include <sys/uio.h>
  75 #include <sys/socket.h>
  76 #include <sys/stat.h>
  77 #include <sys/time.h>
  78 #include <sys/times.h>
  79 #include <sys/wait.h>
  80 #include <sys/un.h>
  81 #if defined(HAVE_SYS_USER_H)
  82 #include <sys/user.h>
  83 #endif
  84 #if defined(HAVE_SYS_UTSNAME_H)
  85 #include <sys/utsname.h>
  86 #endif
  87 #if defined(HAVE_SYS_SELECT_H)
  88 #include <sys/select.h>
  89 #endif
  90 #include <time.h>
  91 #include <unistd.h>
  92 #include <netdb.h>
  93 #include <pwd.h>
  94 #include <grp.h>
  95 #if defined(HAVE_LINUX_FILTER_H)
  96 #include <linux/filter.h>
  97 #endif
  98 #if defined(HAVE_LINUX_IF_ADDR_H)
  99 #include <linux/if_addr.h>
 100 #endif
 101 #if defined(HAVE_LINUX_IF_ETHER_H)
 102 #include <linux/if_ether.h>
 103 #endif
 104 #if defined(HAVE_LINUX_IF_TUN_H)
 105 #include <linux/if_tun.h>
 106 #endif
 107 #if defined(HAVE_LINUX_NETLINK_H)
 108 #include <linux/netlink.h>
 109 #endif
 110 #if defined(HAVE_LINUX_PTRACE_H)
 111 /* Avoid https://sourceware.org/bugzilla/show_bug.cgi?id=762 .  */
 112 #define ia64_fpreg pt_ia64_fpreg
 113 #define pt_all_user_regs pt_ia64_all_user_regs
 114 /* Avoid redefinition of ptrace_peeksiginfo from <sys/ptrace.h>.
 115    https://gcc.gnu.org/PR81324 .  */
 116 #define ptrace_peeksiginfo_args ignore_ptrace_peeksiginfo_args
 117 #include <linux/ptrace.h>
 118 #undef ia64_fpreg
 119 #undef pt_all_user_regs
 120 #undef ptrace_peeksiginfo_args
 121 #endif
 122 #if defined(HAVE_LINUX_RTNETLINK_H)
 123 #include <linux/rtnetlink.h>
 124 #endif
 125 #if defined(HAVE_NET_BPF_H)
 126 #include <net/bpf.h>
 127 #endif
 128 #if defined(HAVE_NET_IF_H)
 129 #include <net/if.h>
 130 #endif
 131 #if defined(HAVE_NET_IF_ARP_H)
 132 #include <net/if_arp.h>
 133 #endif
 134 #if defined(HAVE_NET_ROUTE_H)
 135 #include <net/route.h>
 136 #endif
 137 #if defined (HAVE_NETPACKET_PACKET_H)
 138 #include <netpacket/packet.h>
 139 #endif
 140 #if defined(HAVE_SYS_MOUNT_H)
 141 #include <sys/mount.h>
 142 #endif
 143 #if defined(HAVE_SYS_VFS_H)
 144 #include <sys/vfs.h>
 145 #endif
 146 #if defined(HAVE_STATFS_H)
 147 #include <sys/statfs.h>
 148 #endif
 149 #if defined(HAVE_SYS_TIMEX_H)
 150 #include <sys/timex.h>
 151 #endif
 152 #if defined(HAVE_SYS_SYSINFO_H)
 153 #include <sys/sysinfo.h>
 154 #endif
 155 #if defined(HAVE_UTIME_H)
 156 #include <utime.h>
 157 #endif
 158 #if defined(HAVE_LINUX_ETHER_H)
 159 #include <linux/ether.h>
 160 #endif
 161 #if defined(HAVE_LINUX_FS_H)
 162 #include <linux/fs.h>
 163 #endif
 164 #if defined(HAVE_LINUX_REBOOT_H)
 165 #include <linux/reboot.h>
 166 #endif
 167 #if defined(HAVE_SYS_INOTIFY_H)
 168 #include <sys/inotify.h>
 169 #endif
 170 #if defined(HAVE_NETINET_ICMP6_H)
 171 #include <netinet/icmp6.h>
 172 #endif
 173 #if defined(HAVE_SCHED_H)
 174 #include <sched.h>
 175 #endif
 176 #if defined(HAVE_SEMAPHORE_H)
 177 #include <semaphore.h>
 178 #endif
 179 #if defined(HAVE_PORT_H)
 180 #include <port.h>
 181 #endif
 182 #if defined(HAVE_LWP_H)
 183 #include <lwp.h>
 184 #endif
 185
 186 #ifdef USE_LIBFFI
 187 #include "ffi.h"
 188 #endif
 189
 190 /* Constants that may only be defined as expressions on some systems,
 191    expressions too complex for -fdump-go-spec to handle.  These are
 192    handled specially below.  */
 193 enum {
 194 #ifdef TIOCGWINSZ
 195   TIOCGWINSZ_val = TIOCGWINSZ,
 196 #endif
 197 #ifdef TIOCSWINSZ
 198   TIOCSWINSZ_val = TIOCSWINSZ,
 199 #endif
 200 #ifdef TIOCNOTTY
 201   TIOCNOTTY_val = TIOCNOTTY,
 202 #endif
 203 #ifdef TIOCSCTTY
 204   TIOCSCTTY_val = TIOCSCTTY,
 205 #endif
 206 #ifdef TIOCGPGRP
 207   TIOCGPGRP_val = TIOCGPGRP,
 208 #endif
 209 #ifdef TIOCSPGRP
 210   TIOCSPGRP_val = TIOCSPGRP,
 211 #endif
 212 #ifdef TIOCGPTN
 213   TIOCGPTN_val = TIOCGPTN,
 214 #endif
 215 #ifdef TIOCSPTLCK
 216   TIOCSPTLCK_val = TIOCSPTLCK,
 217 #endif
 218 #ifdef TIOCGDEV
 219   TIOCGDEV_val = TIOCGDEV,
 220 #endif
 221 #ifdef TIOCSIG
 222   TIOCSIG_val = TIOCSIG,
 223 #endif
 224 #ifdef TCGETS
 225   TCGETS_val = TCGETS,
 226 #endif
 227 #ifdef TCSETS
 228   TCSETS_val = TCSETS,
 229 #endif
 230 #ifdef TUNSETIFF
 231   TUNSETIFF_val = TUNSETIFF,
 232 #endif
 233 #ifdef TUNSETNOCSUM
 234   TUNSETNOCSUM_val = TUNSETNOCSUM,
 235 #endif
 236 #ifdef TUNSETDEBUG
 237   TUNSETDEBUG_val = TUNSETDEBUG,
 238 #endif
 239 #ifdef TUNSETPERSIST
 240   TUNSETPERSIST_val = TUNSETPERSIST,
 241 #endif
 242 #ifdef TUNSETOWNER
 243   TUNSETOWNER_val = TUNSETOWNER,
 244 #endif
 245 #ifdef TUNSETLINK
 246   TUNSETLINK_val = TUNSETLINK,
 247 #endif
 248 #ifdef TUNSETGROUP
 249   TUNSETGROUP_val = TUNSETGROUP,
 250 #endif
 251 #ifdef TUNGETFEATURES
 252   TUNGETFEATURES_val = TUNGETFEATURES,
 253 #endif
 254 #ifdef TUNSETOFFLOAD
 255   TUNSETOFFLOAD_val = TUNSETOFFLOAD,
 256 #endif
 257 #ifdef TUNSETTXFILTER
 258   TUNSETTXFILTER_val = TUNSETTXFILTER,
 259 #endif
 260 #ifdef TUNGETIFF
 261   TUNGETIFF_val = TUNGETIFF,
 262 #endif
 263 #ifdef TUNGETSNDBUF
 264   TUNGETSNDBUF_val = TUNGETSNDBUF,
 265 #endif
 266 #ifdef TUNSETSNDBUF
 267   TUNSETSNDBUF_val = TUNSETSNDBUF,
 268 #endif
 269 #ifdef TUNATTACHFILTER
 270   TUNATTACHFILTER_val = TUNATTACHFILTER,
 271 #endif
 272 #ifdef TUNDETACHFILTER
 273   TUNDETACHFILTER_val = TUNDETACHFILTER,
 274 #endif
 275 #ifdef TUNGETVNETHDRSZ
 276   TUNGETVNETHDRSZ_val = TUNGETVNETHDRSZ,
 277 #endif
 278 #ifdef TUNSETVNETHDRSZ
 279   TUNSETVNETHDRSZ_val = TUNSETVNETHDRSZ,
 280 #endif
 281 #ifdef TUNSETQUEUE
 282   TUNSETQUEUE_val = TUNSETQUEUE,
 283 #endif
 284 #ifdef TUNSETIFINDEX
 285   TUNSETIFINDEX_val = TUNSETIFINDEX,
 286 #endif
 287 #ifdef TUNGETFILTER
 288   TUNGETFILTER_val = TUNGETFILTER,
 289 #endif
 290 #ifdef NLA_HDRLEN
 291   NLA_HDRLEN_val = NLA_HDRLEN,
 292 #endif
 293 #ifdef BIOCFLUSH
 294   BIOCFLUSH_val = BIOCFLUSH,
 295 #endif
 296 #ifdef BIOCGBLEN
 297   BIOCGBLEN_val = BIOCGBLEN,
 298 #endif
 299 #ifdef BIOCGDLT
 300   BIOCGDLT_val = BIOCGDLT,
 301 #endif
 302 #ifdef BIOCGETIF
 303   BIOCGETIF_val = BIOCGETIF,
 304 #endif
 305 #ifdef BIOCGHDRCMPLT
 306   BIOCGHDRCMPLT_val = BIOCGHDRCMPLT,
 307 #endif
 308 #ifdef BIOCGRTIMEOUT
 309   BIOCGRTIMEOUT_val = BIOCGRTIMEOUT,
 310 #endif
 311 #ifdef BIOCGSTATS
 312   BIOCGSTATS_val = BIOCGSTATS,
 313 #endif
 314 #ifdef BIOCIMMEDIATE
 315   BIOCIMMEDIATE_val = BIOCIMMEDIATE,
 316 #endif
 317 #ifdef BIOCPROMISC
 318   BIOCPROMISC_val = BIOCPROMISC,
 319 #endif
 320 #ifdef BIOCSBLEN
 321   BIOCSBLEN_val = BIOCSBLEN,
 322 #endif
 323 #ifdef BIOCSDLT
 324   BIOCSDLT_val = BIOCSDLT,
 325 #endif
 326 #ifdef BIOCSETF
 327   BIOCSETF_val = BIOCSETF,
 328 #endif
 329 #ifdef BIOCSETIF
 330   BIOCSETIF_val = BIOCSETIF,
 331 #endif
 332 #ifdef BIOCSHDRCMPLT
 333   BIOCSHDRCMPLT_val = BIOCSHDRCMPLT,
 334 #endif
 335 #ifdef BIOCSRTIMEOUT
 336   BIOCSRTIMEOUT_val = BIOCSRTIMEOUT,
 337 #endif
 338 #ifdef BIOCVERSION
 339   BIOCVERSION_val = BIOCVERSION,
 340 #endif
 341 #ifdef SO_RCVTIMEO
 342   SO_RCVTIMEO_val = SO_RCVTIMEO,
 343 #endif
 344 };
 345
 346 // SIOCGIFMTU can't be added in the above enum as it might
 347 // be signed in some OSes.
 348 #ifdef SIOCGIFMTU
 349 enum {
 350   SIOCGIFMTU_val = SIOCGIFMTU,
 351 };
 352 #endif
 353
 354 #if defined(HAVE_SYS_EPOLL_H)
 355 enum {
 356   epoll_data_offset = offsetof(struct epoll_event, data)
 357 };
 358 #endif
 359
 360 // The following section introduces explicit references to types and
 361 // constants of interest to support bootstrapping libgo using a
 362 // compiler that doesn't support -fdump-go-spec (e.g., clang), via
 363 // DWARF-based tools. This process is made more difficult due to the
 364 // fact that clang tries hard to omit types/constants from DWARF if it
 365 // can't find explicit references to them, so here we make sure that
 366 // key items are mentioned in ways that will force them into the
 367 // generated DWARF.
 368
 369 #if defined(__clang__)
 370
 371 // Make a reference to a type
 372 #define TREF(typ) typ typ ## ref
 373
 374 // Make a reference to an opaque type
 375 #define OTREF(typ) typ *typ ## ref
 376
 377 // Make a reference to a struct tag
 378 #define SREF(stag) struct stag stag ## ref
 379
 380 // Make a reference to an enum literal
 381 #define EREF(elit) unsigned elit ## fn(unsigned x) { return x == elit ? 1 : 0; }
 382
 383 //......................................................................
 384
 385 // From dirent.h
 386 SREF(dirent);
 387 SREF(dirent64);
 388 OTREF(DIR);
 389 EREF(DT_UNKNOWN);
 390
 391 // From fcntl.h
 392 SREF(flock);
 393 SREF(flock64);
 394
 395 // From ffi headers
 396 SREF(_ffi_type);
 397 TREF(ffi_cif);
 398 TREF(ffi_abi);
 399 TREF(ffi_status);
 400 EREF(FFI_OK);
 401
 402 // From grp.h
 403 SREF(group);
 404
 405 #if defined(HAVE_LINUX_FILTER_H)
 406 // From linux/filter.h
 407 SREF(sock_filter);
 408 SREF(sock_fprog);
 409 #endif
 410
 411 // From linux/if.h
 412 EREF(IFF_UP);
 413
 414 #if defined(HAVE_LINUX_IF_ADDR_H)
 415 // From linux/if_addr.h
 416 SREF(ifaddrmsg);
 417 EREF(IFA_ADDRESS);
 418 #endif
 419
 420 #if defined(HAVE_LINUX_RTNETLINK_H)
 421 // From linux/if_link.h
 422 EREF(IFLA_ADDRESS);
 423 #endif
 424
 425 // From in.h, in6.h, icmp6.h
 426 SREF(ip_mreq);
 427 SREF(ip_mreqn);
 428 SREF(ipv6_mreq);
 429 SREF(ip6_mtuinfo);
 430 SREF(icmp6_filter);
 431 SREF(in_pktinfo);
 432 EREF(IPPROTO_TCP);
 433
 434 #if defined(HAVE_LINUX_RTNETLINK_H)
 435 // From linux/rtnetlink.h
 436 SREF(rtgenmsg);
 437 SREF(rtmsg);
 438 SREF(ifinfomsg);
 439 SREF(rtattr);
 440 SREF(rtnexthop);
 441 EREF(RTM_BASE);
 442 EREF(RTN_UNSPEC);
 443 #endif
 444
 445 // From netdb.h
 446 SREF(addrinfo);
 447
 448 // From netlink.h
 449 SREF(nlattr);
 450 SREF(nlmsgerr);
 451
 452 // From pthread.h and related
 453 TREF(pthread_attr_t);
 454 TREF(pthread_t);
 455 TREF(pthread_mutex_t);
 456 TREF(pthread_mutexattr_t);
 457
 458 // From pwd.h
 459 SREF(passwd);
 460
 461 // From signal.h and related
 462 TREF(sigset_t);
 463 TREF(siginfo_t);
 464 TREF(stack_t);
 465 SREF(sigaction);
 466 SREF(sigstack);
 467 EREF(SI_USER);
 468 EREF(FPE_INTOVF);
 469 EREF(BUS_ADRALN);
 470 EREF(SS_ONSTACK);
 471 EREF(SEGV_MAPERR);
 472
 473 // From stat.h
 474 SREF(stat64);
 475
 476 // From statfs.h
 477 SREF(statfs);
 478 SREF(statfs64);
 479
 480 // From sysinfo.h
 481 SREF(sysinfo);
 482
 483 // From <sys/epoll.h>
 484 #if defined(HAVE_SYS_EPOLL_H)
 485 SREF(epoll_event);
 486 EREF(EPOLLIN);
 487 EREF(epoll_data_offset);
 488 #endif
 489
 490 #if defined(HAVE_SYS_MOUNT_H)
 491 // From sys/mount.h
 492 EREF(MS_PRIVATE);
 493 EREF(MNT_FORCE);
 494 #endif
 495
 496 #if defined(HAVE_SYS_PTRACE_H)
 497 // From <sys/ptrace.h>
 498 #if defined (__aarch64__)
 499 SREF(user_pt_regs);
 500 #else
 501 SREF(pt_regs);
 502 #endif
 503 EREF(PTRACE_PEEKTEXT);
 504 #endif
 505
 506 // From sys/resource.h
 507 SREF(rusage);
 508 SREF(rlimit64);
 509 EREF(RLIMIT_NOFILE);
 510 EREF(PRIO_USER);
 511 EREF(RUSAGE_SELF);
 512
 513 // From sys/select.h
 514 TREF(fd_set);
 515
 516 // From sys/socket.h
 517 SREF(msghdr);
 518 SREF(cmsghdr);
 519 SREF(ucred);
 520 EREF(MSG_OOB);
 521 EREF(SCM_RIGHTS);
 522 EREF(SOCK_RAW);
 523 EREF(SHUT_RD);
 524
 525 // From sys/time.h and sys/times.h
 526 SREF(timespec);
 527 SREF(timeval);
 528 SREF(itimerval);
 529 SREF(tms);
 530 EREF(ITIMER_PROF);
 531
 532 #if defined(HAVE_SYS_TIMEX_H)
 533 // From sys/timex.h
 534 SREF(timex);
 535 #endif
 536
 537 // From sys/types.h
 538 TREF(pid_t);
 539 TREF(off_t);
 540 TREF(loff_t);
 541 TREF(size_t);
 542 TREF(ssize_t);
 543 TREF(mode_t);
 544 TREF(dev_t);
 545 TREF(time_t);
 546
 547 // From sys/ucontext.h
 548 TREF(ucontext_t);
 549
 550 #if defined(HAVE_SYS_USER_H)
 551 // From sys/user.h
 552 SREF(user_regs_struct);
 553 #endif
 554
 555 #if defined(HAVE_SYS_UTSNAME_H)
 556 // From sys/utsname.h
 557 SREF(utsname);
 558 #endif
 559
 560 // From termios.h
 561 SREF(termios);
 562
 563 // From uio.h
 564 SREF(iovec);
 565
 566 // From utime.h
 567 SREF(utimbuf);
 568
 569 // From unistd.h
 570 EREF(_PC_NAME_MAX);
 571 EREF(_SC_GETPW_R_SIZE_MAX);
 572
 573 #endif // clang