contrib/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h

   1 //===-- sanitizer_platform_limits_posix.h ---------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is a part of Sanitizer common code.
  10 //
  11 // Sizes and layouts of platform-specific POSIX data structures.
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef SANITIZER_PLATFORM_LIMITS_POSIX_H
  15 #define SANITIZER_PLATFORM_LIMITS_POSIX_H
  16
  17 #if SANITIZER_LINUX || SANITIZER_MAC
  18
  19 #include "sanitizer_internal_defs.h"
  20 #include "sanitizer_platform.h"
  21
  22 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) ((link_map*)(handle))
  23
  24 #ifndef __GLIBC_PREREQ
  25 #define __GLIBC_PREREQ(x, y) 0
  26 #endif
  27
  28 namespace __sanitizer {
  29   extern unsigned struct_utsname_sz;
  30   extern unsigned struct_stat_sz;
  31 #if !SANITIZER_IOS
  32   extern unsigned struct_stat64_sz;
  33 #endif
  34   extern unsigned struct_rusage_sz;
  35   extern unsigned siginfo_t_sz;
  36   extern unsigned struct_itimerval_sz;
  37   extern unsigned pthread_t_sz;
  38   extern unsigned pthread_mutex_t_sz;
  39   extern unsigned pthread_cond_t_sz;
  40   extern unsigned pid_t_sz;
  41   extern unsigned timeval_sz;
  42   extern unsigned uid_t_sz;
  43   extern unsigned gid_t_sz;
  44   extern unsigned mbstate_t_sz;
  45   extern unsigned struct_timezone_sz;
  46   extern unsigned struct_tms_sz;
  47   extern unsigned struct_itimerspec_sz;
  48   extern unsigned struct_sigevent_sz;
  49   extern unsigned struct_sched_param_sz;
  50   extern unsigned struct_statfs64_sz;
  51   extern unsigned struct_regex_sz;
  52   extern unsigned struct_regmatch_sz;
  53
  54 #if !SANITIZER_ANDROID
  55   extern unsigned struct_fstab_sz;
  56   extern unsigned struct_statfs_sz;
  57   extern unsigned struct_sockaddr_sz;
  58   extern unsigned ucontext_t_sz;
  59 #endif // !SANITIZER_ANDROID
  60
  61 #if SANITIZER_LINUX
  62
  63 #if defined(__x86_64__)
  64   const unsigned struct_kernel_stat_sz = 144;
  65   const unsigned struct_kernel_stat64_sz = 0;
  66 #elif defined(__i386__)
  67   const unsigned struct_kernel_stat_sz = 64;
  68   const unsigned struct_kernel_stat64_sz = 96;
  69 #elif defined(__arm__)
  70   const unsigned struct_kernel_stat_sz = 64;
  71   const unsigned struct_kernel_stat64_sz = 104;
  72 #elif defined(__aarch64__)
  73   const unsigned struct_kernel_stat_sz = 128;
  74   const unsigned struct_kernel_stat64_sz = 104;
  75 #elif defined(__powerpc__) && !defined(__powerpc64__)
  76   const unsigned struct_kernel_stat_sz = 72;
  77   const unsigned struct_kernel_stat64_sz = 104;
  78 #elif defined(__powerpc64__)
  79   const unsigned struct_kernel_stat_sz = 144;
  80   const unsigned struct_kernel_stat64_sz = 104;
  81 #elif defined(__riscv) && __riscv_xlen == 64
  82   const unsigned struct_kernel_stat_sz = 128;
  83   const unsigned struct_kernel_stat64_sz = 104;
  84 #elif defined(__mips__)
  85   const unsigned struct_kernel_stat_sz =
  86                  SANITIZER_ANDROID ? FIRST_32_SECOND_64(104, 128) :
  87                                      FIRST_32_SECOND_64(160, 216);
  88   const unsigned struct_kernel_stat64_sz = 104;
  89 #elif defined(__s390__) && !defined(__s390x__)
  90   const unsigned struct_kernel_stat_sz = 64;
  91   const unsigned struct_kernel_stat64_sz = 104;
  92 #elif defined(__s390x__)
  93   const unsigned struct_kernel_stat_sz = 144;
  94   const unsigned struct_kernel_stat64_sz = 0;
  95 #elif defined(__sparc__) && defined(__arch64__)
  96   const unsigned struct___old_kernel_stat_sz = 0;
  97   const unsigned struct_kernel_stat_sz = 104;
  98   const unsigned struct_kernel_stat64_sz = 144;
  99 #elif defined(__sparc__) && !defined(__arch64__)
 100   const unsigned struct___old_kernel_stat_sz = 0;
 101   const unsigned struct_kernel_stat_sz = 64;
 102   const unsigned struct_kernel_stat64_sz = 104;
 103 #endif
 104   struct __sanitizer_perf_event_attr {
 105     unsigned type;
 106     unsigned size;
 107     // More fields that vary with the kernel version.
 108   };
 109
 110   extern unsigned struct_epoll_event_sz;
 111   extern unsigned struct_sysinfo_sz;
 112   extern unsigned __user_cap_header_struct_sz;
 113   extern unsigned __user_cap_data_struct_sz;
 114   extern unsigned struct_new_utsname_sz;
 115   extern unsigned struct_old_utsname_sz;
 116   extern unsigned struct_oldold_utsname_sz;
 117
 118   const unsigned struct_kexec_segment_sz = 4 * sizeof(unsigned long);
 119 #endif  // SANITIZER_LINUX
 120
 121 #if SANITIZER_LINUX
 122
 123 #if defined(__powerpc64__) || defined(__riscv) || defined(__s390__)
 124   const unsigned struct___old_kernel_stat_sz = 0;
 125 #elif !defined(__sparc__)
 126   const unsigned struct___old_kernel_stat_sz = 32;
 127 #endif
 128
 129   extern unsigned struct_rlimit_sz;
 130   extern unsigned struct_utimbuf_sz;
 131   extern unsigned struct_timespec_sz;
 132
 133   struct __sanitizer_iocb {
 134     u64   aio_data;
 135     u32   aio_key_or_aio_reserved1; // Simply crazy.
 136     u32   aio_reserved1_or_aio_key; // Luckily, we don't need these.
 137     u16   aio_lio_opcode;
 138     s16   aio_reqprio;
 139     u32   aio_fildes;
 140     u64   aio_buf;
 141     u64   aio_nbytes;
 142     s64   aio_offset;
 143     u64   aio_reserved2;
 144     u64   aio_reserved3;
 145   };
 146
 147   struct __sanitizer_io_event {
 148     u64 data;
 149     u64 obj;
 150     u64 res;
 151     u64 res2;
 152   };
 153
 154   const unsigned iocb_cmd_pread = 0;
 155   const unsigned iocb_cmd_pwrite = 1;
 156   const unsigned iocb_cmd_preadv = 7;
 157   const unsigned iocb_cmd_pwritev = 8;
 158
 159   struct __sanitizer___sysctl_args {
 160     int *name;
 161     int nlen;
 162     void *oldval;
 163     uptr *oldlenp;
 164     void *newval;
 165     uptr newlen;
 166     unsigned long ___unused[4];
 167   };
 168
 169   const unsigned old_sigset_t_sz = sizeof(unsigned long);
 170
 171   struct __sanitizer_sem_t {
 172 #if SANITIZER_ANDROID && defined(_LP64)
 173     int data[4];
 174 #elif SANITIZER_ANDROID && !defined(_LP64)
 175     int data;
 176 #elif SANITIZER_LINUX
 177     uptr data[4];
 178 #endif
 179   };
 180 #endif // SANITIZER_LINUX
 181
 182 #if SANITIZER_ANDROID
 183   struct __sanitizer_struct_mallinfo {
 184     uptr v[10];
 185   };
 186 #endif
 187
 188 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 189   struct __sanitizer_struct_mallinfo {
 190     int v[10];
 191   };
 192
 193   extern unsigned struct_ustat_sz;
 194   extern unsigned struct_rlimit64_sz;
 195   extern unsigned struct_statvfs64_sz;
 196
 197   struct __sanitizer_ipc_perm {
 198     int __key;
 199     int uid;
 200     int gid;
 201     int cuid;
 202     int cgid;
 203 #ifdef __powerpc__
 204     unsigned mode;
 205     unsigned __seq;
 206     u64 __unused1;
 207     u64 __unused2;
 208 #elif defined(__sparc__)
 209 #if defined(__arch64__)
 210     unsigned mode;
 211     unsigned short __pad1;
 212 #else
 213     unsigned short __pad1;
 214     unsigned short mode;
 215     unsigned short __pad2;
 216 #endif
 217     unsigned short __seq;
 218     unsigned long long __unused1;
 219     unsigned long long __unused2;
 220 #elif defined(__mips__) || defined(__aarch64__) || defined(__s390x__)
 221     unsigned int mode;
 222     unsigned short __seq;
 223     unsigned short __pad1;
 224     unsigned long __unused1;
 225     unsigned long __unused2;
 226 #else
 227     unsigned short mode;
 228     unsigned short __pad1;
 229     unsigned short __seq;
 230     unsigned short __pad2;
 231 #if defined(__x86_64__) && !defined(_LP64)
 232     u64 __unused1;
 233     u64 __unused2;
 234 #else
 235     unsigned long __unused1;
 236     unsigned long __unused2;
 237 #endif
 238 #endif
 239   };
 240
 241   struct __sanitizer_shmid_ds {
 242     __sanitizer_ipc_perm shm_perm;
 243   #if defined(__sparc__)
 244   #if !defined(__arch64__)
 245     u32 __pad1;
 246   #endif
 247     long shm_atime;
 248   #if !defined(__arch64__)
 249     u32 __pad2;
 250   #endif
 251     long shm_dtime;
 252   #if !defined(__arch64__)
 253     u32 __pad3;
 254   #endif
 255     long shm_ctime;
 256     uptr shm_segsz;
 257     int shm_cpid;
 258     int shm_lpid;
 259     unsigned long shm_nattch;
 260     unsigned long __glibc_reserved1;
 261     unsigned long __glibc_reserved2;
 262   #else
 263   #ifndef __powerpc__
 264     uptr shm_segsz;
 265   #elif !defined(__powerpc64__)
 266     uptr __unused0;
 267   #endif
 268   #if defined(__x86_64__) && !defined(_LP64)
 269     u64 shm_atime;
 270     u64 shm_dtime;
 271     u64 shm_ctime;
 272   #else
 273     uptr shm_atime;
 274   #if !defined(_LP64) && !defined(__mips__)
 275     uptr __unused1;
 276   #endif
 277     uptr shm_dtime;
 278   #if !defined(_LP64) && !defined(__mips__)
 279     uptr __unused2;
 280   #endif
 281     uptr shm_ctime;
 282   #if !defined(_LP64) && !defined(__mips__)
 283     uptr __unused3;
 284   #endif
 285   #endif
 286   #ifdef __powerpc__
 287     uptr shm_segsz;
 288   #endif
 289     int shm_cpid;
 290     int shm_lpid;
 291   #if defined(__x86_64__) && !defined(_LP64)
 292     u64 shm_nattch;
 293     u64 __unused4;
 294     u64 __unused5;
 295   #else
 296     uptr shm_nattch;
 297     uptr __unused4;
 298     uptr __unused5;
 299   #endif
 300 #endif
 301   };
 302 #endif
 303
 304 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 305   extern unsigned struct_msqid_ds_sz;
 306   extern unsigned struct_mq_attr_sz;
 307   extern unsigned struct_timex_sz;
 308   extern unsigned struct_statvfs_sz;
 309 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
 310
 311   struct __sanitizer_iovec {
 312     void *iov_base;
 313     uptr iov_len;
 314   };
 315
 316 #if !SANITIZER_ANDROID
 317   struct __sanitizer_ifaddrs {
 318     struct __sanitizer_ifaddrs *ifa_next;
 319     char *ifa_name;
 320     unsigned int ifa_flags;
 321     void *ifa_addr;    // (struct sockaddr *)
 322     void *ifa_netmask; // (struct sockaddr *)
 323     // This is a union on Linux.
 324 # ifdef ifa_dstaddr
 325 # undef ifa_dstaddr
 326 # endif
 327     void *ifa_dstaddr; // (struct sockaddr *)
 328     void *ifa_data;
 329   };
 330 #endif  // !SANITIZER_ANDROID
 331
 332 #if SANITIZER_MAC
 333   typedef unsigned long __sanitizer_pthread_key_t;
 334 #else
 335   typedef unsigned __sanitizer_pthread_key_t;
 336 #endif
 337
 338 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 339
 340   struct __sanitizer_XDR {
 341     int x_op;
 342     void *x_ops;
 343     uptr x_public;
 344     uptr x_private;
 345     uptr x_base;
 346     unsigned x_handy;
 347   };
 348
 349   const int __sanitizer_XDR_ENCODE = 0;
 350   const int __sanitizer_XDR_DECODE = 1;
 351   const int __sanitizer_XDR_FREE = 2;
 352 #endif
 353
 354   struct __sanitizer_passwd {
 355     char *pw_name;
 356     char *pw_passwd;
 357     int pw_uid;
 358     int pw_gid;
 359 #if SANITIZER_MAC
 360     long pw_change;
 361     char *pw_class;
 362 #endif
 363 #if !(SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32))
 364     char *pw_gecos;
 365 #endif
 366     char *pw_dir;
 367     char *pw_shell;
 368 #if SANITIZER_MAC
 369     long pw_expire;
 370 #endif
 371   };
 372
 373   struct __sanitizer_group {
 374     char *gr_name;
 375     char *gr_passwd;
 376     int gr_gid;
 377     char **gr_mem;
 378   };
 379
 380 #if defined(__x86_64__) && !defined(_LP64)
 381   typedef long long __sanitizer_time_t;
 382 #else
 383   typedef long __sanitizer_time_t;
 384 #endif
 385
 386   typedef long __sanitizer_suseconds_t;
 387
 388   struct __sanitizer_timeval {
 389     __sanitizer_time_t tv_sec;
 390     __sanitizer_suseconds_t tv_usec;
 391   };
 392
 393   struct __sanitizer_itimerval {
 394     struct __sanitizer_timeval it_interval;
 395     struct __sanitizer_timeval it_value;
 396   };
 397
 398   struct __sanitizer_timeb {
 399     __sanitizer_time_t time;
 400     unsigned short millitm;
 401     short timezone;
 402     short dstflag;
 403   };
 404
 405   struct __sanitizer_ether_addr {
 406     u8 octet[6];
 407   };
 408
 409   struct __sanitizer_tm {
 410     int tm_sec;
 411     int tm_min;
 412     int tm_hour;
 413     int tm_mday;
 414     int tm_mon;
 415     int tm_year;
 416     int tm_wday;
 417     int tm_yday;
 418     int tm_isdst;
 419     long int tm_gmtoff;
 420     const char *tm_zone;
 421   };
 422
 423 #if SANITIZER_LINUX
 424   struct __sanitizer_mntent {
 425     char *mnt_fsname;
 426     char *mnt_dir;
 427     char *mnt_type;
 428     char *mnt_opts;
 429     int mnt_freq;
 430     int mnt_passno;
 431   };
 432
 433   struct __sanitizer_file_handle {
 434     unsigned int handle_bytes;
 435     int handle_type;
 436     unsigned char f_handle[1];  // variable sized
 437   };
 438 #endif
 439
 440 #if SANITIZER_MAC
 441   struct __sanitizer_msghdr {
 442     void *msg_name;
 443     unsigned msg_namelen;
 444     struct __sanitizer_iovec *msg_iov;
 445     unsigned msg_iovlen;
 446     void *msg_control;
 447     unsigned msg_controllen;
 448     int msg_flags;
 449   };
 450   struct __sanitizer_cmsghdr {
 451     unsigned cmsg_len;
 452     int cmsg_level;
 453     int cmsg_type;
 454   };
 455 #else
 456   struct __sanitizer_msghdr {
 457     void *msg_name;
 458     unsigned msg_namelen;
 459     struct __sanitizer_iovec *msg_iov;
 460     uptr msg_iovlen;
 461     void *msg_control;
 462     uptr msg_controllen;
 463     int msg_flags;
 464   };
 465   struct __sanitizer_cmsghdr {
 466     uptr cmsg_len;
 467     int cmsg_level;
 468     int cmsg_type;
 469   };
 470 #endif
 471
 472 #if SANITIZER_LINUX
 473   struct __sanitizer_mmsghdr {
 474     __sanitizer_msghdr msg_hdr;
 475     unsigned int msg_len;
 476   };
 477 #endif
 478
 479 #if SANITIZER_MAC
 480   struct __sanitizer_dirent {
 481     unsigned long long d_ino;
 482     unsigned long long d_seekoff;
 483     unsigned short d_reclen;
 484     // more fields that we don't care about
 485   };
 486 #elif SANITIZER_ANDROID || defined(__x86_64__)
 487   struct __sanitizer_dirent {
 488     unsigned long long d_ino;
 489     unsigned long long d_off;
 490     unsigned short d_reclen;
 491     // more fields that we don't care about
 492   };
 493 #else
 494   struct __sanitizer_dirent {
 495     uptr d_ino;
 496     uptr d_off;
 497     unsigned short d_reclen;
 498     // more fields that we don't care about
 499   };
 500 #endif
 501
 502 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 503   struct __sanitizer_dirent64 {
 504     unsigned long long d_ino;
 505     unsigned long long d_off;
 506     unsigned short d_reclen;
 507     // more fields that we don't care about
 508   };
 509 #endif
 510
 511 #if defined(__x86_64__) && !defined(_LP64)
 512   typedef long long __sanitizer_clock_t;
 513 #else
 514   typedef long __sanitizer_clock_t;
 515 #endif
 516
 517 #if SANITIZER_LINUX
 518   typedef int __sanitizer_clockid_t;
 519 #endif
 520
 521 #if SANITIZER_LINUX
 522 #if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__)\
 523                    || defined(__mips__)
 524   typedef unsigned __sanitizer___kernel_uid_t;
 525   typedef unsigned __sanitizer___kernel_gid_t;
 526 #else
 527   typedef unsigned short __sanitizer___kernel_uid_t;
 528   typedef unsigned short __sanitizer___kernel_gid_t;
 529 #endif
 530 #if defined(__x86_64__) && !defined(_LP64)
 531   typedef long long __sanitizer___kernel_off_t;
 532 #else
 533   typedef long __sanitizer___kernel_off_t;
 534 #endif
 535
 536 #if defined(__powerpc__) || defined(__mips__) || defined(__riscv)
 537   typedef unsigned int __sanitizer___kernel_old_uid_t;
 538   typedef unsigned int __sanitizer___kernel_old_gid_t;
 539 #else
 540   typedef unsigned short __sanitizer___kernel_old_uid_t;
 541   typedef unsigned short __sanitizer___kernel_old_gid_t;
 542 #endif
 543
 544   typedef long long __sanitizer___kernel_loff_t;
 545   typedef struct {
 546     unsigned long fds_bits[1024 / (8 * sizeof(long))];
 547   } __sanitizer___kernel_fd_set;
 548 #endif
 549
 550   // This thing depends on the platform. We are only interested in the upper
 551   // limit. Verified with a compiler assert in .cc.
 552   const int pthread_attr_t_max_sz = 128;
 553   union __sanitizer_pthread_attr_t {
 554     char size[pthread_attr_t_max_sz]; // NOLINT
 555     void *align;
 556   };
 557
 558 #if SANITIZER_ANDROID
 559 # if SANITIZER_MIPS
 560   typedef unsigned long __sanitizer_sigset_t[16/sizeof(unsigned long)];
 561 # else
 562   typedef unsigned long __sanitizer_sigset_t;
 563 # endif
 564 #elif SANITIZER_MAC
 565   typedef unsigned __sanitizer_sigset_t;
 566 #elif SANITIZER_LINUX
 567   struct __sanitizer_sigset_t {
 568     // The size is determined by looking at sizeof of real sigset_t on linux.
 569     uptr val[128 / sizeof(uptr)];
 570   };
 571 #endif
 572
 573   struct __sanitizer_siginfo {
 574     // The size is determined by looking at sizeof of real siginfo_t on linux.
 575     u64 opaque[128 / sizeof(u64)];
 576   };
 577
 578   using __sanitizer_sighandler_ptr = void (*)(int sig);
 579   using __sanitizer_sigactionhandler_ptr =
 580       void (*)(int sig, __sanitizer_siginfo *siginfo, void *uctx);
 581
 582   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
 583 #if SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 64)
 584   struct __sanitizer_sigaction {
 585     unsigned sa_flags;
 586     union {
 587       __sanitizer_sigactionhandler_ptr sigaction;
 588       __sanitizer_sighandler_ptr handler;
 589     };
 590     __sanitizer_sigset_t sa_mask;
 591     void (*sa_restorer)();
 592   };
 593 #elif SANITIZER_ANDROID && SANITIZER_MIPS32  // check this before WORDSIZE == 32
 594   struct __sanitizer_sigaction {
 595     unsigned sa_flags;
 596     union {
 597       __sanitizer_sigactionhandler_ptr sigaction;
 598       __sanitizer_sighandler_ptr handler;
 599     };
 600     __sanitizer_sigset_t sa_mask;
 601   };
 602 #elif SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32)
 603   struct __sanitizer_sigaction {
 604     union {
 605       __sanitizer_sigactionhandler_ptr sigaction;
 606       __sanitizer_sighandler_ptr handler;
 607     };
 608     __sanitizer_sigset_t sa_mask;
 609     uptr sa_flags;
 610     void (*sa_restorer)();
 611   };
 612 #else // !SANITIZER_ANDROID
 613   struct __sanitizer_sigaction {
 614 #if defined(__mips__) && !SANITIZER_FREEBSD
 615     unsigned int sa_flags;
 616 #endif
 617     union {
 618       __sanitizer_sigactionhandler_ptr sigaction;
 619       __sanitizer_sighandler_ptr handler;
 620     };
 621 #if SANITIZER_FREEBSD
 622     int sa_flags;
 623     __sanitizer_sigset_t sa_mask;
 624 #else
 625 #if defined(__s390x__)
 626     int sa_resv;
 627 #else
 628     __sanitizer_sigset_t sa_mask;
 629 #endif
 630 #ifndef __mips__
 631 #if defined(__sparc__)
 632 #if __GLIBC_PREREQ (2, 20)
 633     // On sparc glibc 2.19 and earlier sa_flags was unsigned long.
 634 #if defined(__arch64__)
 635     // To maintain ABI compatibility on sparc64 when switching to an int,
 636     // __glibc_reserved0 was added.
 637     int __glibc_reserved0;
 638 #endif
 639     int sa_flags;
 640 #else
 641     unsigned long sa_flags;
 642 #endif
 643 #else
 644     int sa_flags;
 645 #endif
 646 #endif
 647 #endif
 648 #if SANITIZER_LINUX
 649     void (*sa_restorer)();
 650 #endif
 651 #if defined(__mips__) && (SANITIZER_WORDSIZE == 32)
 652     int sa_resv[1];
 653 #endif
 654 #if defined(__s390x__)
 655     __sanitizer_sigset_t sa_mask;
 656 #endif
 657   };
 658 #endif // !SANITIZER_ANDROID
 659
 660 #if defined(__mips__)
 661   struct __sanitizer_kernel_sigset_t {
 662     uptr sig[2];
 663   };
 664 #else
 665   struct __sanitizer_kernel_sigset_t {
 666     u8 sig[8];
 667   };
 668 #endif
 669
 670   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
 671 #if SANITIZER_MIPS
 672   struct __sanitizer_kernel_sigaction_t {
 673     unsigned int sa_flags;
 674     union {
 675       void (*handler)(int signo);
 676       void (*sigaction)(int signo, __sanitizer_siginfo *info, void *ctx);
 677     };
 678     __sanitizer_kernel_sigset_t sa_mask;
 679     void (*sa_restorer)(void);
 680   };
 681 #else
 682   struct __sanitizer_kernel_sigaction_t {
 683     union {
 684       void (*handler)(int signo);
 685       void (*sigaction)(int signo, __sanitizer_siginfo *info, void *ctx);
 686     };
 687     unsigned long sa_flags;
 688     void (*sa_restorer)(void);
 689     __sanitizer_kernel_sigset_t sa_mask;
 690   };
 691 #endif
 692
 693   extern const uptr sig_ign;
 694   extern const uptr sig_dfl;
 695   extern const uptr sig_err;
 696   extern const uptr sa_siginfo;
 697
 698 #if SANITIZER_LINUX
 699   extern int e_tabsz;
 700 #endif
 701
 702   extern int af_inet;
 703   extern int af_inet6;
 704   uptr __sanitizer_in_addr_sz(int af);
 705
 706 #if SANITIZER_LINUX
 707   struct __sanitizer_dl_phdr_info {
 708     uptr dlpi_addr;
 709     const char *dlpi_name;
 710     const void *dlpi_phdr;
 711     short dlpi_phnum;
 712   };
 713
 714   extern unsigned struct_ElfW_Phdr_sz;
 715 #endif
 716
 717   struct __sanitizer_addrinfo {
 718     int ai_flags;
 719     int ai_family;
 720     int ai_socktype;
 721     int ai_protocol;
 722 #if SANITIZER_ANDROID || SANITIZER_MAC
 723     unsigned ai_addrlen;
 724     char *ai_canonname;
 725     void *ai_addr;
 726 #else // LINUX
 727     unsigned ai_addrlen;
 728     void *ai_addr;
 729     char *ai_canonname;
 730 #endif
 731     struct __sanitizer_addrinfo *ai_next;
 732   };
 733
 734   struct __sanitizer_hostent {
 735     char *h_name;
 736     char **h_aliases;
 737     int h_addrtype;
 738     int h_length;
 739     char **h_addr_list;
 740   };
 741
 742   struct __sanitizer_pollfd {
 743     int fd;
 744     short events;
 745     short revents;
 746   };
 747
 748 #if SANITIZER_ANDROID || SANITIZER_MAC
 749   typedef unsigned __sanitizer_nfds_t;
 750 #else
 751   typedef unsigned long __sanitizer_nfds_t;
 752 #endif
 753
 754 #if !SANITIZER_ANDROID
 755 # if SANITIZER_LINUX
 756   struct __sanitizer_glob_t {
 757     uptr gl_pathc;
 758     char **gl_pathv;
 759     uptr gl_offs;
 760     int gl_flags;
 761
 762     void (*gl_closedir)(void *dirp);
 763     void *(*gl_readdir)(void *dirp);
 764     void *(*gl_opendir)(const char *);
 765     int (*gl_lstat)(const char *, void *);
 766     int (*gl_stat)(const char *, void *);
 767   };
 768 # endif  // SANITIZER_LINUX
 769
 770 # if SANITIZER_LINUX
 771   extern int glob_nomatch;
 772   extern int glob_altdirfunc;
 773 # endif
 774 #endif  // !SANITIZER_ANDROID
 775
 776   extern unsigned path_max;
 777
 778   struct __sanitizer_wordexp_t {
 779     uptr we_wordc;
 780     char **we_wordv;
 781     uptr we_offs;
 782   };
 783
 784 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 785   struct __sanitizer_FILE {
 786     int _flags;
 787     char *_IO_read_ptr;
 788     char *_IO_read_end;
 789     char *_IO_read_base;
 790     char *_IO_write_base;
 791     char *_IO_write_ptr;
 792     char *_IO_write_end;
 793     char *_IO_buf_base;
 794     char *_IO_buf_end;
 795     char *_IO_save_base;
 796     char *_IO_backup_base;
 797     char *_IO_save_end;
 798     void *_markers;
 799     __sanitizer_FILE *_chain;
 800     int _fileno;
 801   };
 802 # define SANITIZER_HAS_STRUCT_FILE 1
 803 #else
 804   typedef void __sanitizer_FILE;
 805 # define SANITIZER_HAS_STRUCT_FILE 0
 806 #endif
 807
 808 #if SANITIZER_LINUX && !SANITIZER_ANDROID && \
 809   (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
 810     defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__) || \
 811     defined(__s390__))
 812   extern unsigned struct_user_regs_struct_sz;
 813   extern unsigned struct_user_fpregs_struct_sz;
 814   extern unsigned struct_user_fpxregs_struct_sz;
 815   extern unsigned struct_user_vfpregs_struct_sz;
 816
 817   extern int ptrace_peektext;
 818   extern int ptrace_peekdata;
 819   extern int ptrace_peekuser;
 820   extern int ptrace_getregs;
 821   extern int ptrace_setregs;
 822   extern int ptrace_getfpregs;
 823   extern int ptrace_setfpregs;
 824   extern int ptrace_getfpxregs;
 825   extern int ptrace_setfpxregs;
 826   extern int ptrace_getvfpregs;
 827   extern int ptrace_setvfpregs;
 828   extern int ptrace_getsiginfo;
 829   extern int ptrace_setsiginfo;
 830   extern int ptrace_getregset;
 831   extern int ptrace_setregset;
 832   extern int ptrace_geteventmsg;
 833 #endif
 834
 835 #if SANITIZER_LINUX  && !SANITIZER_ANDROID
 836   extern unsigned struct_shminfo_sz;
 837   extern unsigned struct_shm_info_sz;
 838   extern int shmctl_ipc_stat;
 839   extern int shmctl_ipc_info;
 840   extern int shmctl_shm_info;
 841   extern int shmctl_shm_stat;
 842 #endif
 843
 844 #if !SANITIZER_MAC && !SANITIZER_FREEBSD
 845   extern unsigned struct_utmp_sz;
 846 #endif
 847 #if !SANITIZER_ANDROID
 848   extern unsigned struct_utmpx_sz;
 849 #endif
 850
 851   extern int map_fixed;
 852
 853   // ioctl arguments
 854   struct __sanitizer_ifconf {
 855     int ifc_len;
 856     union {
 857       void *ifcu_req;
 858     } ifc_ifcu;
 859 #if SANITIZER_MAC
 860   } __attribute__((packed));
 861 #else
 862   };
 863 #endif
 864
 865 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 866 struct __sanitizer__obstack_chunk {
 867   char *limit;
 868   struct __sanitizer__obstack_chunk *prev;
 869 };
 870
 871 struct __sanitizer_obstack {
 872   long chunk_size;
 873   struct __sanitizer__obstack_chunk *chunk;
 874   char *object_base;
 875   char *next_free;
 876   uptr more_fields[7];
 877 };
 878
 879 typedef uptr (*__sanitizer_cookie_io_read)(void *cookie, char *buf, uptr size);
 880 typedef uptr (*__sanitizer_cookie_io_write)(void *cookie, const char *buf,
 881                                             uptr size);
 882 typedef int (*__sanitizer_cookie_io_seek)(void *cookie, u64 *offset,
 883                                           int whence);
 884 typedef int (*__sanitizer_cookie_io_close)(void *cookie);
 885
 886 struct __sanitizer_cookie_io_functions_t {
 887   __sanitizer_cookie_io_read read;
 888   __sanitizer_cookie_io_write write;
 889   __sanitizer_cookie_io_seek seek;
 890   __sanitizer_cookie_io_close close;
 891 };
 892 #endif
 893
 894 #define IOC_NRBITS 8
 895 #define IOC_TYPEBITS 8
 896 #if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__) || \
 897     defined(__sparc__)
 898 #define IOC_SIZEBITS 13
 899 #define IOC_DIRBITS 3
 900 #define IOC_NONE 1U
 901 #define IOC_WRITE 4U
 902 #define IOC_READ 2U
 903 #else
 904 #define IOC_SIZEBITS 14
 905 #define IOC_DIRBITS 2
 906 #define IOC_NONE 0U
 907 #define IOC_WRITE 1U
 908 #define IOC_READ 2U
 909 #endif
 910 #define IOC_NRMASK ((1 << IOC_NRBITS) - 1)
 911 #define IOC_TYPEMASK ((1 << IOC_TYPEBITS) - 1)
 912 #define IOC_SIZEMASK ((1 << IOC_SIZEBITS) - 1)
 913 #if defined(IOC_DIRMASK)
 914 #undef IOC_DIRMASK
 915 #endif
 916 #define IOC_DIRMASK ((1 << IOC_DIRBITS) - 1)
 917 #define IOC_NRSHIFT 0
 918 #define IOC_TYPESHIFT (IOC_NRSHIFT + IOC_NRBITS)
 919 #define IOC_SIZESHIFT (IOC_TYPESHIFT + IOC_TYPEBITS)
 920 #define IOC_DIRSHIFT (IOC_SIZESHIFT + IOC_SIZEBITS)
 921 #define EVIOC_EV_MAX 0x1f
 922 #define EVIOC_ABS_MAX 0x3f
 923
 924 #define IOC_DIR(nr) (((nr) >> IOC_DIRSHIFT) & IOC_DIRMASK)
 925 #define IOC_TYPE(nr) (((nr) >> IOC_TYPESHIFT) & IOC_TYPEMASK)
 926 #define IOC_NR(nr) (((nr) >> IOC_NRSHIFT) & IOC_NRMASK)
 927
 928 #if defined(__sparc__)
 929 // In sparc the 14 bits SIZE field overlaps with the
 930 // least significant bit of DIR, so either IOC_READ or
 931 // IOC_WRITE shall be 1 in order to get a non-zero SIZE.
 932 #define IOC_SIZE(nr) \
 933   ((((((nr) >> 29) & 0x7) & (4U | 2U)) == 0) ? 0 : (((nr) >> 16) & 0x3fff))
 934 #else
 935 #define IOC_SIZE(nr) (((nr) >> IOC_SIZESHIFT) & IOC_SIZEMASK)
 936 #endif
 937
 938   extern unsigned struct_ifreq_sz;
 939   extern unsigned struct_termios_sz;
 940   extern unsigned struct_winsize_sz;
 941
 942 #if SANITIZER_LINUX
 943   extern unsigned struct_arpreq_sz;
 944   extern unsigned struct_cdrom_msf_sz;
 945   extern unsigned struct_cdrom_multisession_sz;
 946   extern unsigned struct_cdrom_read_audio_sz;
 947   extern unsigned struct_cdrom_subchnl_sz;
 948   extern unsigned struct_cdrom_ti_sz;
 949   extern unsigned struct_cdrom_tocentry_sz;
 950   extern unsigned struct_cdrom_tochdr_sz;
 951   extern unsigned struct_cdrom_volctrl_sz;
 952   extern unsigned struct_ff_effect_sz;
 953   extern unsigned struct_floppy_drive_params_sz;
 954   extern unsigned struct_floppy_drive_struct_sz;
 955   extern unsigned struct_floppy_fdc_state_sz;
 956   extern unsigned struct_floppy_max_errors_sz;
 957   extern unsigned struct_floppy_raw_cmd_sz;
 958   extern unsigned struct_floppy_struct_sz;
 959   extern unsigned struct_floppy_write_errors_sz;
 960   extern unsigned struct_format_descr_sz;
 961   extern unsigned struct_hd_driveid_sz;
 962   extern unsigned struct_hd_geometry_sz;
 963   extern unsigned struct_input_absinfo_sz;
 964   extern unsigned struct_input_id_sz;
 965   extern unsigned struct_mtpos_sz;
 966   extern unsigned struct_termio_sz;
 967   extern unsigned struct_vt_consize_sz;
 968   extern unsigned struct_vt_sizes_sz;
 969   extern unsigned struct_vt_stat_sz;
 970 #endif  // SANITIZER_LINUX
 971
 972 #if SANITIZER_LINUX
 973   extern unsigned struct_copr_buffer_sz;
 974   extern unsigned struct_copr_debug_buf_sz;
 975   extern unsigned struct_copr_msg_sz;
 976   extern unsigned struct_midi_info_sz;
 977   extern unsigned struct_mtget_sz;
 978   extern unsigned struct_mtop_sz;
 979   extern unsigned struct_rtentry_sz;
 980   extern unsigned struct_sbi_instrument_sz;
 981   extern unsigned struct_seq_event_rec_sz;
 982   extern unsigned struct_synth_info_sz;
 983   extern unsigned struct_vt_mode_sz;
 984 #endif // SANITIZER_LINUX
 985
 986 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 987   extern unsigned struct_ax25_parms_struct_sz;
 988   extern unsigned struct_cyclades_monitor_sz;
 989   extern unsigned struct_input_keymap_entry_sz;
 990   extern unsigned struct_ipx_config_data_sz;
 991   extern unsigned struct_kbdiacrs_sz;
 992   extern unsigned struct_kbentry_sz;
 993   extern unsigned struct_kbkeycode_sz;
 994   extern unsigned struct_kbsentry_sz;
 995   extern unsigned struct_mtconfiginfo_sz;
 996   extern unsigned struct_nr_parms_struct_sz;
 997   extern unsigned struct_scc_modem_sz;
 998   extern unsigned struct_scc_stat_sz;
 999   extern unsigned struct_serial_multiport_struct_sz;
1000   extern unsigned struct_serial_struct_sz;
1001   extern unsigned struct_sockaddr_ax25_sz;
1002   extern unsigned struct_unimapdesc_sz;
1003   extern unsigned struct_unimapinit_sz;
1004 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
1005
1006   extern const unsigned long __sanitizer_bufsiz;
1007
1008 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1009   extern unsigned struct_audio_buf_info_sz;
1010   extern unsigned struct_ppp_stats_sz;
1011 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
1012
1013 #if !SANITIZER_ANDROID && !SANITIZER_MAC
1014   extern unsigned struct_sioc_sg_req_sz;
1015   extern unsigned struct_sioc_vif_req_sz;
1016 #endif
1017
1018   // ioctl request identifiers
1019
1020   // A special value to mark ioctls that are not present on the target platform,
1021   // when it can not be determined without including any system headers.
1022   extern const unsigned IOCTL_NOT_PRESENT;
1023
1024   extern unsigned IOCTL_FIOASYNC;
1025   extern unsigned IOCTL_FIOCLEX;
1026   extern unsigned IOCTL_FIOGETOWN;
1027   extern unsigned IOCTL_FIONBIO;
1028   extern unsigned IOCTL_FIONCLEX;
1029   extern unsigned IOCTL_FIOSETOWN;
1030   extern unsigned IOCTL_SIOCADDMULTI;
1031   extern unsigned IOCTL_SIOCATMARK;
1032   extern unsigned IOCTL_SIOCDELMULTI;
1033   extern unsigned IOCTL_SIOCGIFADDR;
1034   extern unsigned IOCTL_SIOCGIFBRDADDR;
1035   extern unsigned IOCTL_SIOCGIFCONF;
1036   extern unsigned IOCTL_SIOCGIFDSTADDR;
1037   extern unsigned IOCTL_SIOCGIFFLAGS;
1038   extern unsigned IOCTL_SIOCGIFMETRIC;
1039   extern unsigned IOCTL_SIOCGIFMTU;
1040   extern unsigned IOCTL_SIOCGIFNETMASK;
1041   extern unsigned IOCTL_SIOCGPGRP;
1042   extern unsigned IOCTL_SIOCSIFADDR;
1043   extern unsigned IOCTL_SIOCSIFBRDADDR;
1044   extern unsigned IOCTL_SIOCSIFDSTADDR;
1045   extern unsigned IOCTL_SIOCSIFFLAGS;
1046   extern unsigned IOCTL_SIOCSIFMETRIC;
1047   extern unsigned IOCTL_SIOCSIFMTU;
1048   extern unsigned IOCTL_SIOCSIFNETMASK;
1049   extern unsigned IOCTL_SIOCSPGRP;
1050   extern unsigned IOCTL_TIOCCONS;
1051   extern unsigned IOCTL_TIOCEXCL;
1052   extern unsigned IOCTL_TIOCGETD;
1053   extern unsigned IOCTL_TIOCGPGRP;
1054   extern unsigned IOCTL_TIOCGWINSZ;
1055   extern unsigned IOCTL_TIOCMBIC;
1056   extern unsigned IOCTL_TIOCMBIS;
1057   extern unsigned IOCTL_TIOCMGET;
1058   extern unsigned IOCTL_TIOCMSET;
1059   extern unsigned IOCTL_TIOCNOTTY;
1060   extern unsigned IOCTL_TIOCNXCL;
1061   extern unsigned IOCTL_TIOCOUTQ;
1062   extern unsigned IOCTL_TIOCPKT;
1063   extern unsigned IOCTL_TIOCSCTTY;
1064   extern unsigned IOCTL_TIOCSETD;
1065   extern unsigned IOCTL_TIOCSPGRP;
1066   extern unsigned IOCTL_TIOCSTI;
1067   extern unsigned IOCTL_TIOCSWINSZ;
1068 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1069   extern unsigned IOCTL_SIOCGETSGCNT;
1070   extern unsigned IOCTL_SIOCGETVIFCNT;
1071 #endif
1072 #if SANITIZER_LINUX
1073   extern unsigned IOCTL_EVIOCGABS;
1074   extern unsigned IOCTL_EVIOCGBIT;
1075   extern unsigned IOCTL_EVIOCGEFFECTS;
1076   extern unsigned IOCTL_EVIOCGID;
1077   extern unsigned IOCTL_EVIOCGKEY;
1078   extern unsigned IOCTL_EVIOCGKEYCODE;
1079   extern unsigned IOCTL_EVIOCGLED;
1080   extern unsigned IOCTL_EVIOCGNAME;
1081   extern unsigned IOCTL_EVIOCGPHYS;
1082   extern unsigned IOCTL_EVIOCGRAB;
1083   extern unsigned IOCTL_EVIOCGREP;
1084   extern unsigned IOCTL_EVIOCGSND;
1085   extern unsigned IOCTL_EVIOCGSW;
1086   extern unsigned IOCTL_EVIOCGUNIQ;
1087   extern unsigned IOCTL_EVIOCGVERSION;
1088   extern unsigned IOCTL_EVIOCRMFF;
1089   extern unsigned IOCTL_EVIOCSABS;
1090   extern unsigned IOCTL_EVIOCSFF;
1091   extern unsigned IOCTL_EVIOCSKEYCODE;
1092   extern unsigned IOCTL_EVIOCSREP;
1093   extern unsigned IOCTL_BLKFLSBUF;
1094   extern unsigned IOCTL_BLKGETSIZE;
1095   extern unsigned IOCTL_BLKRAGET;
1096   extern unsigned IOCTL_BLKRASET;
1097   extern unsigned IOCTL_BLKROGET;
1098   extern unsigned IOCTL_BLKROSET;
1099   extern unsigned IOCTL_BLKRRPART;
1100   extern unsigned IOCTL_CDROMAUDIOBUFSIZ;
1101   extern unsigned IOCTL_CDROMEJECT;
1102   extern unsigned IOCTL_CDROMEJECT_SW;
1103   extern unsigned IOCTL_CDROMMULTISESSION;
1104   extern unsigned IOCTL_CDROMPAUSE;
1105   extern unsigned IOCTL_CDROMPLAYMSF;
1106   extern unsigned IOCTL_CDROMPLAYTRKIND;
1107   extern unsigned IOCTL_CDROMREADAUDIO;
1108   extern unsigned IOCTL_CDROMREADCOOKED;
1109   extern unsigned IOCTL_CDROMREADMODE1;
1110   extern unsigned IOCTL_CDROMREADMODE2;
1111   extern unsigned IOCTL_CDROMREADRAW;
1112   extern unsigned IOCTL_CDROMREADTOCENTRY;
1113   extern unsigned IOCTL_CDROMREADTOCHDR;
1114   extern unsigned IOCTL_CDROMRESET;
1115   extern unsigned IOCTL_CDROMRESUME;
1116   extern unsigned IOCTL_CDROMSEEK;
1117   extern unsigned IOCTL_CDROMSTART;
1118   extern unsigned IOCTL_CDROMSTOP;
1119   extern unsigned IOCTL_CDROMSUBCHNL;
1120   extern unsigned IOCTL_CDROMVOLCTRL;
1121   extern unsigned IOCTL_CDROMVOLREAD;
1122   extern unsigned IOCTL_CDROM_GET_UPC;
1123   extern unsigned IOCTL_FDCLRPRM;
1124   extern unsigned IOCTL_FDDEFPRM;
1125   extern unsigned IOCTL_FDFLUSH;
1126   extern unsigned IOCTL_FDFMTBEG;
1127   extern unsigned IOCTL_FDFMTEND;
1128   extern unsigned IOCTL_FDFMTTRK;
1129   extern unsigned IOCTL_FDGETDRVPRM;
1130   extern unsigned IOCTL_FDGETDRVSTAT;
1131   extern unsigned IOCTL_FDGETDRVTYP;
1132   extern unsigned IOCTL_FDGETFDCSTAT;
1133   extern unsigned IOCTL_FDGETMAXERRS;
1134   extern unsigned IOCTL_FDGETPRM;
1135   extern unsigned IOCTL_FDMSGOFF;
1136   extern unsigned IOCTL_FDMSGON;
1137   extern unsigned IOCTL_FDPOLLDRVSTAT;
1138   extern unsigned IOCTL_FDRAWCMD;
1139   extern unsigned IOCTL_FDRESET;
1140   extern unsigned IOCTL_FDSETDRVPRM;
1141   extern unsigned IOCTL_FDSETEMSGTRESH;
1142   extern unsigned IOCTL_FDSETMAXERRS;
1143   extern unsigned IOCTL_FDSETPRM;
1144   extern unsigned IOCTL_FDTWADDLE;
1145   extern unsigned IOCTL_FDWERRORCLR;
1146   extern unsigned IOCTL_FDWERRORGET;
1147   extern unsigned IOCTL_HDIO_DRIVE_CMD;
1148   extern unsigned IOCTL_HDIO_GETGEO;
1149   extern unsigned IOCTL_HDIO_GET_32BIT;
1150   extern unsigned IOCTL_HDIO_GET_DMA;
1151   extern unsigned IOCTL_HDIO_GET_IDENTITY;
1152   extern unsigned IOCTL_HDIO_GET_KEEPSETTINGS;
1153   extern unsigned IOCTL_HDIO_GET_MULTCOUNT;
1154   extern unsigned IOCTL_HDIO_GET_NOWERR;
1155   extern unsigned IOCTL_HDIO_GET_UNMASKINTR;
1156   extern unsigned IOCTL_HDIO_SET_32BIT;
1157   extern unsigned IOCTL_HDIO_SET_DMA;
1158   extern unsigned IOCTL_HDIO_SET_KEEPSETTINGS;
1159   extern unsigned IOCTL_HDIO_SET_MULTCOUNT;
1160   extern unsigned IOCTL_HDIO_SET_NOWERR;
1161   extern unsigned IOCTL_HDIO_SET_UNMASKINTR;
1162   extern unsigned IOCTL_MTIOCPOS;
1163   extern unsigned IOCTL_PPPIOCGASYNCMAP;
1164   extern unsigned IOCTL_PPPIOCGDEBUG;
1165   extern unsigned IOCTL_PPPIOCGFLAGS;
1166   extern unsigned IOCTL_PPPIOCGUNIT;
1167   extern unsigned IOCTL_PPPIOCGXASYNCMAP;
1168   extern unsigned IOCTL_PPPIOCSASYNCMAP;
1169   extern unsigned IOCTL_PPPIOCSDEBUG;
1170   extern unsigned IOCTL_PPPIOCSFLAGS;
1171   extern unsigned IOCTL_PPPIOCSMAXCID;
1172   extern unsigned IOCTL_PPPIOCSMRU;
1173   extern unsigned IOCTL_PPPIOCSXASYNCMAP;
1174   extern unsigned IOCTL_SIOCDARP;
1175   extern unsigned IOCTL_SIOCDRARP;
1176   extern unsigned IOCTL_SIOCGARP;
1177   extern unsigned IOCTL_SIOCGIFENCAP;
1178   extern unsigned IOCTL_SIOCGIFHWADDR;
1179   extern unsigned IOCTL_SIOCGIFMAP;
1180   extern unsigned IOCTL_SIOCGIFMEM;
1181   extern unsigned IOCTL_SIOCGIFNAME;
1182   extern unsigned IOCTL_SIOCGIFSLAVE;
1183   extern unsigned IOCTL_SIOCGRARP;
1184   extern unsigned IOCTL_SIOCGSTAMP;
1185   extern unsigned IOCTL_SIOCSARP;
1186   extern unsigned IOCTL_SIOCSIFENCAP;
1187   extern unsigned IOCTL_SIOCSIFHWADDR;
1188   extern unsigned IOCTL_SIOCSIFLINK;
1189   extern unsigned IOCTL_SIOCSIFMAP;
1190   extern unsigned IOCTL_SIOCSIFMEM;
1191   extern unsigned IOCTL_SIOCSIFSLAVE;
1192   extern unsigned IOCTL_SIOCSRARP;
1193   extern unsigned IOCTL_SNDCTL_COPR_HALT;
1194   extern unsigned IOCTL_SNDCTL_COPR_LOAD;
1195   extern unsigned IOCTL_SNDCTL_COPR_RCODE;
1196   extern unsigned IOCTL_SNDCTL_COPR_RCVMSG;
1197   extern unsigned IOCTL_SNDCTL_COPR_RDATA;
1198   extern unsigned IOCTL_SNDCTL_COPR_RESET;
1199   extern unsigned IOCTL_SNDCTL_COPR_RUN;
1200   extern unsigned IOCTL_SNDCTL_COPR_SENDMSG;
1201   extern unsigned IOCTL_SNDCTL_COPR_WCODE;
1202   extern unsigned IOCTL_SNDCTL_COPR_WDATA;
1203   extern unsigned IOCTL_TCFLSH;
1204   extern unsigned IOCTL_TCGETA;
1205   extern unsigned IOCTL_TCGETS;
1206   extern unsigned IOCTL_TCSBRK;
1207   extern unsigned IOCTL_TCSBRKP;
1208   extern unsigned IOCTL_TCSETA;
1209   extern unsigned IOCTL_TCSETAF;
1210   extern unsigned IOCTL_TCSETAW;
1211   extern unsigned IOCTL_TCSETS;
1212   extern unsigned IOCTL_TCSETSF;
1213   extern unsigned IOCTL_TCSETSW;
1214   extern unsigned IOCTL_TCXONC;
1215   extern unsigned IOCTL_TIOCGLCKTRMIOS;
1216   extern unsigned IOCTL_TIOCGSOFTCAR;
1217   extern unsigned IOCTL_TIOCINQ;
1218   extern unsigned IOCTL_TIOCLINUX;
1219   extern unsigned IOCTL_TIOCSERCONFIG;
1220   extern unsigned IOCTL_TIOCSERGETLSR;
1221   extern unsigned IOCTL_TIOCSERGWILD;
1222   extern unsigned IOCTL_TIOCSERSWILD;
1223   extern unsigned IOCTL_TIOCSLCKTRMIOS;
1224   extern unsigned IOCTL_TIOCSSOFTCAR;
1225   extern unsigned IOCTL_VT_DISALLOCATE;
1226   extern unsigned IOCTL_VT_GETSTATE;
1227   extern unsigned IOCTL_VT_RESIZE;
1228   extern unsigned IOCTL_VT_RESIZEX;
1229   extern unsigned IOCTL_VT_SENDSIG;
1230   extern unsigned IOCTL_MTIOCGET;
1231   extern unsigned IOCTL_MTIOCTOP;
1232   extern unsigned IOCTL_SIOCADDRT;
1233   extern unsigned IOCTL_SIOCDELRT;
1234   extern unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE;
1235   extern unsigned IOCTL_SNDCTL_DSP_GETFMTS;
1236   extern unsigned IOCTL_SNDCTL_DSP_NONBLOCK;
1237   extern unsigned IOCTL_SNDCTL_DSP_POST;
1238   extern unsigned IOCTL_SNDCTL_DSP_RESET;
1239   extern unsigned IOCTL_SNDCTL_DSP_SETFMT;
1240   extern unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT;
1241   extern unsigned IOCTL_SNDCTL_DSP_SPEED;
1242   extern unsigned IOCTL_SNDCTL_DSP_STEREO;
1243   extern unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE;
1244   extern unsigned IOCTL_SNDCTL_DSP_SYNC;
1245   extern unsigned IOCTL_SNDCTL_FM_4OP_ENABLE;
1246   extern unsigned IOCTL_SNDCTL_FM_LOAD_INSTR;
1247   extern unsigned IOCTL_SNDCTL_MIDI_INFO;
1248   extern unsigned IOCTL_SNDCTL_MIDI_PRETIME;
1249   extern unsigned IOCTL_SNDCTL_SEQ_CTRLRATE;
1250   extern unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT;
1251   extern unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT;
1252   extern unsigned IOCTL_SNDCTL_SEQ_NRMIDIS;
1253   extern unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS;
1254   extern unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND;
1255   extern unsigned IOCTL_SNDCTL_SEQ_PANIC;
1256   extern unsigned IOCTL_SNDCTL_SEQ_PERCMODE;
1257   extern unsigned IOCTL_SNDCTL_SEQ_RESET;
1258   extern unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES;
1259   extern unsigned IOCTL_SNDCTL_SEQ_SYNC;
1260   extern unsigned IOCTL_SNDCTL_SEQ_TESTMIDI;
1261   extern unsigned IOCTL_SNDCTL_SEQ_THRESHOLD;
1262   extern unsigned IOCTL_SNDCTL_SYNTH_INFO;
1263   extern unsigned IOCTL_SNDCTL_SYNTH_MEMAVL;
1264   extern unsigned IOCTL_SNDCTL_TMR_CONTINUE;
1265   extern unsigned IOCTL_SNDCTL_TMR_METRONOME;
1266   extern unsigned IOCTL_SNDCTL_TMR_SELECT;
1267   extern unsigned IOCTL_SNDCTL_TMR_SOURCE;
1268   extern unsigned IOCTL_SNDCTL_TMR_START;
1269   extern unsigned IOCTL_SNDCTL_TMR_STOP;
1270   extern unsigned IOCTL_SNDCTL_TMR_TEMPO;
1271   extern unsigned IOCTL_SNDCTL_TMR_TIMEBASE;
1272   extern unsigned IOCTL_SOUND_MIXER_READ_ALTPCM;
1273   extern unsigned IOCTL_SOUND_MIXER_READ_BASS;
1274   extern unsigned IOCTL_SOUND_MIXER_READ_CAPS;
1275   extern unsigned IOCTL_SOUND_MIXER_READ_CD;
1276   extern unsigned IOCTL_SOUND_MIXER_READ_DEVMASK;
1277   extern unsigned IOCTL_SOUND_MIXER_READ_ENHANCE;
1278   extern unsigned IOCTL_SOUND_MIXER_READ_IGAIN;
1279   extern unsigned IOCTL_SOUND_MIXER_READ_IMIX;
1280   extern unsigned IOCTL_SOUND_MIXER_READ_LINE1;
1281   extern unsigned IOCTL_SOUND_MIXER_READ_LINE2;
1282   extern unsigned IOCTL_SOUND_MIXER_READ_LINE3;
1283   extern unsigned IOCTL_SOUND_MIXER_READ_LINE;
1284   extern unsigned IOCTL_SOUND_MIXER_READ_LOUD;
1285   extern unsigned IOCTL_SOUND_MIXER_READ_MIC;
1286   extern unsigned IOCTL_SOUND_MIXER_READ_MUTE;
1287   extern unsigned IOCTL_SOUND_MIXER_READ_OGAIN;
1288   extern unsigned IOCTL_SOUND_MIXER_READ_PCM;
1289   extern unsigned IOCTL_SOUND_MIXER_READ_RECLEV;
1290   extern unsigned IOCTL_SOUND_MIXER_READ_RECMASK;
1291   extern unsigned IOCTL_SOUND_MIXER_READ_RECSRC;
1292   extern unsigned IOCTL_SOUND_MIXER_READ_SPEAKER;
1293   extern unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS;
1294   extern unsigned IOCTL_SOUND_MIXER_READ_SYNTH;
1295   extern unsigned IOCTL_SOUND_MIXER_READ_TREBLE;
1296   extern unsigned IOCTL_SOUND_MIXER_READ_VOLUME;
1297   extern unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM;
1298   extern unsigned IOCTL_SOUND_MIXER_WRITE_BASS;
1299   extern unsigned IOCTL_SOUND_MIXER_WRITE_CD;
1300   extern unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE;
1301   extern unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN;
1302   extern unsigned IOCTL_SOUND_MIXER_WRITE_IMIX;
1303   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE1;
1304   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE2;
1305   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE3;
1306   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE;
1307   extern unsigned IOCTL_SOUND_MIXER_WRITE_LOUD;
1308   extern unsigned IOCTL_SOUND_MIXER_WRITE_MIC;
1309   extern unsigned IOCTL_SOUND_MIXER_WRITE_MUTE;
1310   extern unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN;
1311   extern unsigned IOCTL_SOUND_MIXER_WRITE_PCM;
1312   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV;
1313   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC;
1314   extern unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER;
1315   extern unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH;
1316   extern unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE;
1317   extern unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME;
1318   extern unsigned IOCTL_SOUND_PCM_READ_BITS;
1319   extern unsigned IOCTL_SOUND_PCM_READ_CHANNELS;
1320   extern unsigned IOCTL_SOUND_PCM_READ_FILTER;
1321   extern unsigned IOCTL_SOUND_PCM_READ_RATE;
1322   extern unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS;
1323   extern unsigned IOCTL_SOUND_PCM_WRITE_FILTER;
1324   extern unsigned IOCTL_VT_ACTIVATE;
1325   extern unsigned IOCTL_VT_GETMODE;
1326   extern unsigned IOCTL_VT_OPENQRY;
1327   extern unsigned IOCTL_VT_RELDISP;
1328   extern unsigned IOCTL_VT_SETMODE;
1329   extern unsigned IOCTL_VT_WAITACTIVE;
1330 #endif  // SANITIZER_LINUX
1331
1332 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1333   extern unsigned IOCTL_CYGETDEFTHRESH;
1334   extern unsigned IOCTL_CYGETDEFTIMEOUT;
1335   extern unsigned IOCTL_CYGETMON;
1336   extern unsigned IOCTL_CYGETTHRESH;
1337   extern unsigned IOCTL_CYGETTIMEOUT;
1338   extern unsigned IOCTL_CYSETDEFTHRESH;
1339   extern unsigned IOCTL_CYSETDEFTIMEOUT;
1340   extern unsigned IOCTL_CYSETTHRESH;
1341   extern unsigned IOCTL_CYSETTIMEOUT;
1342   extern unsigned IOCTL_EQL_EMANCIPATE;
1343   extern unsigned IOCTL_EQL_ENSLAVE;
1344   extern unsigned IOCTL_EQL_GETMASTRCFG;
1345   extern unsigned IOCTL_EQL_GETSLAVECFG;
1346   extern unsigned IOCTL_EQL_SETMASTRCFG;
1347   extern unsigned IOCTL_EQL_SETSLAVECFG;
1348   extern unsigned IOCTL_EVIOCGKEYCODE_V2;
1349   extern unsigned IOCTL_EVIOCGPROP;
1350   extern unsigned IOCTL_EVIOCSKEYCODE_V2;
1351   extern unsigned IOCTL_FS_IOC_GETFLAGS;
1352   extern unsigned IOCTL_FS_IOC_GETVERSION;
1353   extern unsigned IOCTL_FS_IOC_SETFLAGS;
1354   extern unsigned IOCTL_FS_IOC_SETVERSION;
1355   extern unsigned IOCTL_GIO_CMAP;
1356   extern unsigned IOCTL_GIO_FONT;
1357   extern unsigned IOCTL_GIO_UNIMAP;
1358   extern unsigned IOCTL_GIO_UNISCRNMAP;
1359   extern unsigned IOCTL_KDADDIO;
1360   extern unsigned IOCTL_KDDELIO;
1361   extern unsigned IOCTL_KDGETKEYCODE;
1362   extern unsigned IOCTL_KDGKBDIACR;
1363   extern unsigned IOCTL_KDGKBENT;
1364   extern unsigned IOCTL_KDGKBLED;
1365   extern unsigned IOCTL_KDGKBMETA;
1366   extern unsigned IOCTL_KDGKBSENT;
1367   extern unsigned IOCTL_KDMAPDISP;
1368   extern unsigned IOCTL_KDSETKEYCODE;
1369   extern unsigned IOCTL_KDSIGACCEPT;
1370   extern unsigned IOCTL_KDSKBDIACR;
1371   extern unsigned IOCTL_KDSKBENT;
1372   extern unsigned IOCTL_KDSKBLED;
1373   extern unsigned IOCTL_KDSKBMETA;
1374   extern unsigned IOCTL_KDSKBSENT;
1375   extern unsigned IOCTL_KDUNMAPDISP;
1376   extern unsigned IOCTL_LPABORT;
1377   extern unsigned IOCTL_LPABORTOPEN;
1378   extern unsigned IOCTL_LPCAREFUL;
1379   extern unsigned IOCTL_LPCHAR;
1380   extern unsigned IOCTL_LPGETIRQ;
1381   extern unsigned IOCTL_LPGETSTATUS;
1382   extern unsigned IOCTL_LPRESET;
1383   extern unsigned IOCTL_LPSETIRQ;
1384   extern unsigned IOCTL_LPTIME;
1385   extern unsigned IOCTL_LPWAIT;
1386   extern unsigned IOCTL_MTIOCGETCONFIG;
1387   extern unsigned IOCTL_MTIOCSETCONFIG;
1388   extern unsigned IOCTL_PIO_CMAP;
1389   extern unsigned IOCTL_PIO_FONT;
1390   extern unsigned IOCTL_PIO_UNIMAP;
1391   extern unsigned IOCTL_PIO_UNIMAPCLR;
1392   extern unsigned IOCTL_PIO_UNISCRNMAP;
1393   extern unsigned IOCTL_SCSI_IOCTL_GET_IDLUN;
1394   extern unsigned IOCTL_SCSI_IOCTL_PROBE_HOST;
1395   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE;
1396   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE;
1397   extern unsigned IOCTL_SIOCAIPXITFCRT;
1398   extern unsigned IOCTL_SIOCAIPXPRISLT;
1399   extern unsigned IOCTL_SIOCAX25ADDUID;
1400   extern unsigned IOCTL_SIOCAX25DELUID;
1401   extern unsigned IOCTL_SIOCAX25GETPARMS;
1402   extern unsigned IOCTL_SIOCAX25GETUID;
1403   extern unsigned IOCTL_SIOCAX25NOUID;
1404   extern unsigned IOCTL_SIOCAX25SETPARMS;
1405   extern unsigned IOCTL_SIOCDEVPLIP;
1406   extern unsigned IOCTL_SIOCIPXCFGDATA;
1407   extern unsigned IOCTL_SIOCNRDECOBS;
1408   extern unsigned IOCTL_SIOCNRGETPARMS;
1409   extern unsigned IOCTL_SIOCNRRTCTL;
1410   extern unsigned IOCTL_SIOCNRSETPARMS;
1411   extern unsigned IOCTL_SNDCTL_DSP_GETISPACE;
1412   extern unsigned IOCTL_SNDCTL_DSP_GETOSPACE;
1413   extern unsigned IOCTL_TIOCGSERIAL;
1414   extern unsigned IOCTL_TIOCSERGETMULTI;
1415   extern unsigned IOCTL_TIOCSERSETMULTI;
1416   extern unsigned IOCTL_TIOCSSERIAL;
1417   extern unsigned IOCTL_GIO_SCRNMAP;
1418   extern unsigned IOCTL_KDDISABIO;
1419   extern unsigned IOCTL_KDENABIO;
1420   extern unsigned IOCTL_KDGETLED;
1421   extern unsigned IOCTL_KDGETMODE;
1422   extern unsigned IOCTL_KDGKBMODE;
1423   extern unsigned IOCTL_KDGKBTYPE;
1424   extern unsigned IOCTL_KDMKTONE;
1425   extern unsigned IOCTL_KDSETLED;
1426   extern unsigned IOCTL_KDSETMODE;
1427   extern unsigned IOCTL_KDSKBMODE;
1428   extern unsigned IOCTL_KIOCSOUND;
1429   extern unsigned IOCTL_PIO_SCRNMAP;
1430 #endif
1431
1432   extern const int si_SEGV_MAPERR;
1433   extern const int si_SEGV_ACCERR;
1434 }  // namespace __sanitizer
1435
1436 #define CHECK_TYPE_SIZE(TYPE) \
1437   COMPILER_CHECK(sizeof(__sanitizer_##TYPE) == sizeof(TYPE))
1438
1439 #define CHECK_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1440   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
1441                  sizeof(((CLASS *) NULL)->MEMBER));                \
1442   COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) ==          \
1443                  offsetof(CLASS, MEMBER))
1444
1445 // For sigaction, which is a function and struct at the same time,
1446 // and thus requires explicit "struct" in sizeof() expression.
1447 #define CHECK_STRUCT_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1448   COMPILER_CHECK(sizeof(((struct __sanitizer_##CLASS *) NULL)->MEMBER) == \
1449                  sizeof(((struct CLASS *) NULL)->MEMBER));                \
1450   COMPILER_CHECK(offsetof(struct __sanitizer_##CLASS, MEMBER) ==          \
1451                  offsetof(struct CLASS, MEMBER))
1452
1453 #define SIGACTION_SYMNAME sigaction
1454
1455 #endif  // SANITIZER_LINUX || SANITIZER_MAC
1456
1457 #endif