libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

   1 //===-- sanitizer_platform_limits_posix.h ---------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of Sanitizer common code.
   9 //
  10 // Sizes and layouts of platform-specific POSIX data structures.
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef SANITIZER_PLATFORM_LIMITS_POSIX_H
  14 #define SANITIZER_PLATFORM_LIMITS_POSIX_H
  15
  16 #include "sanitizer_internal_defs.h"
  17 #include "sanitizer_platform.h"
  18
  19 #if SANITIZER_FREEBSD
  20 // FreeBSD's dlopen() returns a pointer to an Obj_Entry structure that
  21 // incorporates the map structure.
  22 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) \
  23     ((link_map*)((handle) == nullptr ? nullptr : ((char*)(handle) + 544)))
  24 #else
  25 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) ((link_map*)(handle))
  26 #endif  // !SANITIZER_FREEBSD
  27
  28 #ifndef __GLIBC_PREREQ
  29 #define __GLIBC_PREREQ(x, y) 0
  30 #endif
  31
  32 namespace __sanitizer {
  33   extern unsigned struct_utsname_sz;
  34   extern unsigned struct_stat_sz;
  35 #if !SANITIZER_FREEBSD && !SANITIZER_IOS
  36   extern unsigned struct_stat64_sz;
  37 #endif
  38   extern unsigned struct_rusage_sz;
  39   extern unsigned siginfo_t_sz;
  40   extern unsigned struct_itimerval_sz;
  41   extern unsigned pthread_t_sz;
  42   extern unsigned pthread_cond_t_sz;
  43   extern unsigned pid_t_sz;
  44   extern unsigned timeval_sz;
  45   extern unsigned uid_t_sz;
  46   extern unsigned gid_t_sz;
  47   extern unsigned mbstate_t_sz;
  48   extern unsigned struct_timezone_sz;
  49   extern unsigned struct_tms_sz;
  50   extern unsigned struct_itimerspec_sz;
  51   extern unsigned struct_sigevent_sz;
  52   extern unsigned struct_sched_param_sz;
  53   extern unsigned struct_statfs64_sz;
  54
  55 #if !SANITIZER_ANDROID
  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(__mips__)
  82   const unsigned struct_kernel_stat_sz =
  83                  SANITIZER_ANDROID ? FIRST_32_SECOND_64(104, 128) :
  84                                      FIRST_32_SECOND_64(144, 216);
  85   const unsigned struct_kernel_stat64_sz = 104;
  86 #elif defined(__s390__) && !defined(__s390x__)
  87   const unsigned struct_kernel_stat_sz = 64;
  88   const unsigned struct_kernel_stat64_sz = 104;
  89 #elif defined(__s390x__)
  90   const unsigned struct_kernel_stat_sz = 144;
  91   const unsigned struct_kernel_stat64_sz = 0;
  92 #elif defined(__sparc__) && defined(__arch64__)
  93   const unsigned struct___old_kernel_stat_sz = 0;
  94   const unsigned struct_kernel_stat_sz = 104;
  95   const unsigned struct_kernel_stat64_sz = 144;
  96 #elif defined(__sparc__) && !defined(__arch64__)
  97   const unsigned struct___old_kernel_stat_sz = 0;
  98   const unsigned struct_kernel_stat_sz = 64;
  99   const unsigned struct_kernel_stat64_sz = 104;
 100 #endif
 101   struct __sanitizer_perf_event_attr {
 102     unsigned type;
 103     unsigned size;
 104     // More fields that vary with the kernel version.
 105   };
 106
 107   extern unsigned struct_epoll_event_sz;
 108   extern unsigned struct_sysinfo_sz;
 109   extern unsigned __user_cap_header_struct_sz;
 110   extern unsigned __user_cap_data_struct_sz;
 111   extern unsigned struct_new_utsname_sz;
 112   extern unsigned struct_old_utsname_sz;
 113   extern unsigned struct_oldold_utsname_sz;
 114
 115   const unsigned struct_kexec_segment_sz = 4 * sizeof(unsigned long);
 116 #endif  // SANITIZER_LINUX
 117
 118 #if SANITIZER_LINUX || SANITIZER_FREEBSD
 119
 120 #if defined(__powerpc64__) || defined(__s390__)
 121   const unsigned struct___old_kernel_stat_sz = 0;
 122 #elif !defined(__sparc__)
 123   const unsigned struct___old_kernel_stat_sz = 32;
 124 #endif
 125
 126   extern unsigned struct_rlimit_sz;
 127   extern unsigned struct_utimbuf_sz;
 128   extern unsigned struct_timespec_sz;
 129
 130   struct __sanitizer_iocb {
 131     u64   aio_data;
 132     u32   aio_key_or_aio_reserved1; // Simply crazy.
 133     u32   aio_reserved1_or_aio_key; // Luckily, we don't need these.
 134     u16   aio_lio_opcode;
 135     s16   aio_reqprio;
 136     u32   aio_fildes;
 137     u64   aio_buf;
 138     u64   aio_nbytes;
 139     s64   aio_offset;
 140     u64   aio_reserved2;
 141     u64   aio_reserved3;
 142   };
 143
 144   struct __sanitizer_io_event {
 145     u64 data;
 146     u64 obj;
 147     u64 res;
 148     u64 res2;
 149   };
 150
 151   const unsigned iocb_cmd_pread = 0;
 152   const unsigned iocb_cmd_pwrite = 1;
 153   const unsigned iocb_cmd_preadv = 7;
 154   const unsigned iocb_cmd_pwritev = 8;
 155
 156   struct __sanitizer___sysctl_args {
 157     int *name;
 158     int nlen;
 159     void *oldval;
 160     uptr *oldlenp;
 161     void *newval;
 162     uptr newlen;
 163     unsigned long ___unused[4];
 164   };
 165
 166   const unsigned old_sigset_t_sz = sizeof(unsigned long);
 167
 168   struct __sanitizer_sem_t {
 169 #if SANITIZER_ANDROID && defined(_LP64)
 170     int data[4];
 171 #elif SANITIZER_ANDROID && !defined(_LP64)
 172     int data;
 173 #elif SANITIZER_LINUX
 174     uptr data[4];
 175 #elif SANITIZER_FREEBSD
 176     u32 data[4];
 177 #endif
 178   };
 179 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
 180
 181 #if SANITIZER_ANDROID
 182   struct __sanitizer_mallinfo {
 183     uptr v[10];
 184   };
 185 #endif
 186
 187 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 188   struct __sanitizer_mallinfo {
 189     int v[10];
 190   };
 191
 192   extern unsigned struct_ustat_sz;
 193   extern unsigned struct_rlimit64_sz;
 194   extern unsigned struct_statvfs64_sz;
 195
 196   struct __sanitizer_ipc_perm {
 197     int __key;
 198     int uid;
 199     int gid;
 200     int cuid;
 201     int cgid;
 202 #ifdef __powerpc__
 203     unsigned mode;
 204     unsigned __seq;
 205     u64 __unused1;
 206     u64 __unused2;
 207 #elif defined(__mips__) || defined(__aarch64__) || defined(__s390x__)
 208     unsigned int mode;
 209     unsigned short __seq;
 210     unsigned short __pad1;
 211     unsigned long __unused1;
 212     unsigned long __unused2;
 213 #elif defined(__sparc__)
 214 # if defined(__arch64__)
 215     unsigned mode;
 216     unsigned short __pad1;
 217 # else
 218     unsigned short __pad1;
 219     unsigned short mode;
 220     unsigned short __pad2;
 221 # endif
 222     unsigned short __seq;
 223     unsigned long long __unused1;
 224     unsigned long long __unused2;
 225 #else
 226     unsigned short mode;
 227     unsigned short __pad1;
 228     unsigned short __seq;
 229     unsigned short __pad2;
 230 #if defined(__x86_64__) && !defined(_LP64)
 231     u64 __unused1;
 232     u64 __unused2;
 233 #else
 234     unsigned long __unused1;
 235     unsigned long __unused2;
 236 #endif
 237 #endif
 238   };
 239
 240   struct __sanitizer_shmid_ds {
 241     __sanitizer_ipc_perm shm_perm;
 242   #if defined(__sparc__)
 243   # if !defined(__arch64__)
 244     u32 __pad1;
 245   # endif
 246     long shm_atime;
 247   # if !defined(__arch64__)
 248     u32 __pad2;
 249   # endif
 250     long shm_dtime;
 251   # if !defined(__arch64__)
 252     u32 __pad3;
 253   # endif
 254     long shm_ctime;
 255     uptr shm_segsz;
 256     int shm_cpid;
 257     int shm_lpid;
 258     unsigned long shm_nattch;
 259     unsigned long __glibc_reserved1;
 260     unsigned long __glibc_reserved2;
 261   #else
 262   #ifndef __powerpc__
 263     uptr shm_segsz;
 264   #elif !defined(__powerpc64__)
 265     uptr __unused0;
 266   #endif
 267   #if defined(__x86_64__) && !defined(_LP64)
 268     u64 shm_atime;
 269     u64 shm_dtime;
 270     u64 shm_ctime;
 271   #else
 272     uptr shm_atime;
 273   #if !defined(_LP64) && !defined(__mips__)
 274     uptr __unused1;
 275   #endif
 276     uptr shm_dtime;
 277   #if !defined(_LP64) && !defined(__mips__)
 278     uptr __unused2;
 279   #endif
 280     uptr shm_ctime;
 281   #if !defined(_LP64) && !defined(__mips__)
 282     uptr __unused3;
 283   #endif
 284   #endif
 285   #ifdef __powerpc__
 286     uptr shm_segsz;
 287   #endif
 288     int shm_cpid;
 289     int shm_lpid;
 290   #if defined(__x86_64__) && !defined(_LP64)
 291     u64 shm_nattch;
 292     u64 __unused4;
 293     u64 __unused5;
 294   #else
 295     uptr shm_nattch;
 296     uptr __unused4;
 297     uptr __unused5;
 298   #endif
 299 #endif
 300   };
 301 #elif SANITIZER_FREEBSD
 302   struct __sanitizer_ipc_perm {
 303     unsigned int cuid;
 304     unsigned int cgid;
 305     unsigned int uid;
 306     unsigned int gid;
 307     unsigned short mode;
 308     unsigned short seq;
 309     long key;
 310   };
 311
 312   struct __sanitizer_shmid_ds {
 313     __sanitizer_ipc_perm shm_perm;
 314     unsigned long shm_segsz;
 315     unsigned int shm_lpid;
 316     unsigned int shm_cpid;
 317     int shm_nattch;
 318     unsigned long shm_atime;
 319     unsigned long shm_dtime;
 320     unsigned long shm_ctime;
 321   };
 322 #endif
 323
 324 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
 325   extern unsigned struct_msqid_ds_sz;
 326   extern unsigned struct_mq_attr_sz;
 327   extern unsigned struct_timex_sz;
 328   extern unsigned struct_statvfs_sz;
 329 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
 330
 331   struct __sanitizer_iovec {
 332     void *iov_base;
 333     uptr iov_len;
 334   };
 335
 336 #if !SANITIZER_ANDROID
 337   struct __sanitizer_ifaddrs {
 338     struct __sanitizer_ifaddrs *ifa_next;
 339     char *ifa_name;
 340     unsigned int ifa_flags;
 341     void *ifa_addr;    // (struct sockaddr *)
 342     void *ifa_netmask; // (struct sockaddr *)
 343     // This is a union on Linux.
 344 # ifdef ifa_dstaddr
 345 # undef ifa_dstaddr
 346 # endif
 347     void *ifa_dstaddr; // (struct sockaddr *)
 348     void *ifa_data;
 349   };
 350 #endif  // !SANITIZER_ANDROID
 351
 352 #if SANITIZER_MAC
 353   typedef unsigned long __sanitizer_pthread_key_t;
 354 #else
 355   typedef unsigned __sanitizer_pthread_key_t;
 356 #endif
 357
 358 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 359
 360   struct __sanitizer_XDR {
 361     int x_op;
 362     void *x_ops;
 363     uptr x_public;
 364     uptr x_private;
 365     uptr x_base;
 366     unsigned x_handy;
 367   };
 368
 369   const int __sanitizer_XDR_ENCODE = 0;
 370   const int __sanitizer_XDR_DECODE = 1;
 371   const int __sanitizer_XDR_FREE = 2;
 372 #endif
 373
 374   struct __sanitizer_passwd {
 375     char *pw_name;
 376     char *pw_passwd;
 377     int pw_uid;
 378     int pw_gid;
 379 #if SANITIZER_MAC || SANITIZER_FREEBSD
 380     long pw_change;
 381     char *pw_class;
 382 #endif
 383 #if !(SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32))
 384     char *pw_gecos;
 385 #endif
 386     char *pw_dir;
 387     char *pw_shell;
 388 #if SANITIZER_MAC || SANITIZER_FREEBSD
 389     long pw_expire;
 390 #endif
 391 #if SANITIZER_FREEBSD
 392     int pw_fields;
 393 #endif
 394   };
 395
 396   struct __sanitizer_group {
 397     char *gr_name;
 398     char *gr_passwd;
 399     int gr_gid;
 400     char **gr_mem;
 401   };
 402
 403 #if defined(__x86_64__) && !defined(_LP64)
 404   typedef long long __sanitizer_time_t;
 405 #else
 406   typedef long __sanitizer_time_t;
 407 #endif
 408
 409   struct __sanitizer_timeb {
 410     __sanitizer_time_t time;
 411     unsigned short millitm;
 412     short timezone;
 413     short dstflag;
 414   };
 415
 416   struct __sanitizer_ether_addr {
 417     u8 octet[6];
 418   };
 419
 420   struct __sanitizer_tm {
 421     int tm_sec;
 422     int tm_min;
 423     int tm_hour;
 424     int tm_mday;
 425     int tm_mon;
 426     int tm_year;
 427     int tm_wday;
 428     int tm_yday;
 429     int tm_isdst;
 430     long int tm_gmtoff;
 431     const char *tm_zone;
 432   };
 433
 434 #if SANITIZER_LINUX
 435   struct __sanitizer_mntent {
 436     char *mnt_fsname;
 437     char *mnt_dir;
 438     char *mnt_type;
 439     char *mnt_opts;
 440     int mnt_freq;
 441     int mnt_passno;
 442   };
 443 #endif
 444
 445 #if SANITIZER_MAC || SANITIZER_FREEBSD
 446   struct __sanitizer_msghdr {
 447     void *msg_name;
 448     unsigned msg_namelen;
 449     struct __sanitizer_iovec *msg_iov;
 450     unsigned msg_iovlen;
 451     void *msg_control;
 452     unsigned msg_controllen;
 453     int msg_flags;
 454   };
 455   struct __sanitizer_cmsghdr {
 456     unsigned cmsg_len;
 457     int cmsg_level;
 458     int cmsg_type;
 459   };
 460 #else
 461   struct __sanitizer_msghdr {
 462     void *msg_name;
 463     unsigned msg_namelen;
 464     struct __sanitizer_iovec *msg_iov;
 465     uptr msg_iovlen;
 466     void *msg_control;
 467     uptr msg_controllen;
 468     int msg_flags;
 469   };
 470   struct __sanitizer_cmsghdr {
 471     uptr cmsg_len;
 472     int cmsg_level;
 473     int cmsg_type;
 474   };
 475 #endif
 476
 477 #if SANITIZER_MAC
 478   struct __sanitizer_dirent {
 479     unsigned long long d_ino;
 480     unsigned long long d_seekoff;
 481     unsigned short d_reclen;
 482     // more fields that we don't care about
 483   };
 484 #elif SANITIZER_FREEBSD
 485   struct __sanitizer_dirent {
 486     unsigned int d_fileno;
 487     unsigned short d_reclen;
 488     // more fields that we don't care about
 489   };
 490 #elif SANITIZER_ANDROID || defined(__x86_64__)
 491   struct __sanitizer_dirent {
 492     unsigned long long d_ino;
 493     unsigned long long d_off;
 494     unsigned short d_reclen;
 495     // more fields that we don't care about
 496   };
 497 #else
 498   struct __sanitizer_dirent {
 499     uptr d_ino;
 500     uptr d_off;
 501     unsigned short d_reclen;
 502     // more fields that we don't care about
 503   };
 504 #endif
 505
 506 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 507   struct __sanitizer_dirent64 {
 508     unsigned long long d_ino;
 509     unsigned long long d_off;
 510     unsigned short d_reclen;
 511     // more fields that we don't care about
 512   };
 513 #endif
 514
 515 // 'clock_t' is 32 bits wide on x64 FreeBSD
 516 #if SANITIZER_FREEBSD
 517   typedef int __sanitizer_clock_t;
 518 #elif defined(__x86_64__) && !defined(_LP64)
 519   typedef long long __sanitizer_clock_t;
 520 #else
 521   typedef long __sanitizer_clock_t;
 522 #endif
 523
 524 #if SANITIZER_LINUX
 525   typedef int __sanitizer_clockid_t;
 526 #endif
 527
 528 #if SANITIZER_LINUX || SANITIZER_FREEBSD
 529 #if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__)\
 530                    || defined(__mips__)
 531   typedef unsigned __sanitizer___kernel_uid_t;
 532   typedef unsigned __sanitizer___kernel_gid_t;
 533 #else
 534   typedef unsigned short __sanitizer___kernel_uid_t;
 535   typedef unsigned short __sanitizer___kernel_gid_t;
 536 #endif
 537 #if defined(__x86_64__) && !defined(_LP64)
 538   typedef long long __sanitizer___kernel_off_t;
 539 #else
 540   typedef long __sanitizer___kernel_off_t;
 541 #endif
 542
 543 #if defined(__powerpc__) || defined(__mips__)
 544   typedef unsigned int __sanitizer___kernel_old_uid_t;
 545   typedef unsigned int __sanitizer___kernel_old_gid_t;
 546 #else
 547   typedef unsigned short __sanitizer___kernel_old_uid_t;
 548   typedef unsigned short __sanitizer___kernel_old_gid_t;
 549 #endif
 550
 551   typedef long long __sanitizer___kernel_loff_t;
 552   typedef struct {
 553     unsigned long fds_bits[1024 / (8 * sizeof(long))];
 554   } __sanitizer___kernel_fd_set;
 555 #endif
 556
 557   // This thing depends on the platform. We are only interested in the upper
 558   // limit. Verified with a compiler assert in .cc.
 559   const int pthread_attr_t_max_sz = 128;
 560   union __sanitizer_pthread_attr_t {
 561     char size[pthread_attr_t_max_sz]; // NOLINT
 562     void *align;
 563   };
 564
 565 #if SANITIZER_ANDROID
 566 # if SANITIZER_MIPS
 567   typedef unsigned long __sanitizer_sigset_t[16/sizeof(unsigned long)];
 568 # else
 569   typedef unsigned long __sanitizer_sigset_t;
 570 # endif
 571 #elif SANITIZER_MAC
 572   typedef unsigned __sanitizer_sigset_t;
 573 #elif SANITIZER_LINUX
 574   struct __sanitizer_sigset_t {
 575     // The size is determined by looking at sizeof of real sigset_t on linux.
 576     uptr val[128 / sizeof(uptr)];
 577   };
 578 #elif SANITIZER_FREEBSD
 579   struct __sanitizer_sigset_t {
 580      // uint32_t * 4
 581      unsigned int __bits[4];
 582   };
 583 #endif
 584
 585   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
 586 #if SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 64)
 587   struct __sanitizer_sigaction {
 588     unsigned sa_flags;
 589     union {
 590       void (*sigaction)(int sig, void *siginfo, void *uctx);
 591       void (*handler)(int sig);
 592     };
 593     __sanitizer_sigset_t sa_mask;
 594     void (*sa_restorer)();
 595   };
 596 #elif SANITIZER_ANDROID && SANITIZER_MIPS32  // check this before WORDSIZE == 32
 597   struct __sanitizer_sigaction {
 598     unsigned sa_flags;
 599     union {
 600       void (*sigaction)(int sig, void *siginfo, void *uctx);
 601       void (*handler)(int sig);
 602     };
 603     __sanitizer_sigset_t sa_mask;
 604   };
 605 #elif SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32)
 606   struct __sanitizer_sigaction {
 607     union {
 608       void (*sigaction)(int sig, void *siginfo, void *uctx);
 609       void (*handler)(int sig);
 610     };
 611     __sanitizer_sigset_t sa_mask;
 612     uptr sa_flags;
 613     void (*sa_restorer)();
 614   };
 615 #else // !SANITIZER_ANDROID
 616   struct __sanitizer_sigaction {
 617 #if defined(__mips__) && !SANITIZER_FREEBSD
 618     unsigned int sa_flags;
 619 #endif
 620     union {
 621       void (*sigaction)(int sig, void *siginfo, void *uctx);
 622       void (*handler)(int sig);
 623     };
 624 #if SANITIZER_FREEBSD
 625     int sa_flags;
 626     __sanitizer_sigset_t sa_mask;
 627 #else
 628 #if defined(__s390x__)
 629     int sa_resv;
 630 #else
 631     __sanitizer_sigset_t sa_mask;
 632 #endif
 633 #ifndef __mips__
 634 #if defined(__sparc__)
 635 #if __GLIBC_PREREQ (2, 20)
 636     // On sparc glibc 2.19 and earlier sa_flags was unsigned long.
 637 #if defined(__arch64__)
 638     // To maintain ABI compatibility on sparc64 when switching to an int,
 639     // __glibc_reserved0 was added.
 640     int __glibc_reserved0;
 641 #endif
 642     int sa_flags;
 643 #else
 644     unsigned long sa_flags;
 645 #endif
 646 #else
 647     int sa_flags;
 648 #endif
 649 #endif
 650 #endif
 651 #if SANITIZER_LINUX
 652     void (*sa_restorer)();
 653 #endif
 654 #if defined(__mips__) && (SANITIZER_WORDSIZE == 32)
 655     int sa_resv[1];
 656 #endif
 657 #if defined(__s390x__)
 658     __sanitizer_sigset_t sa_mask;
 659 #endif
 660   };
 661 #endif // !SANITIZER_ANDROID
 662
 663 #if SANITIZER_FREEBSD
 664   typedef __sanitizer_sigset_t __sanitizer_kernel_sigset_t;
 665 #elif defined(__mips__)
 666   struct __sanitizer_kernel_sigset_t {
 667     uptr sig[2];
 668   };
 669 #else
 670   struct __sanitizer_kernel_sigset_t {
 671     u8 sig[8];
 672   };
 673 #endif
 674
 675   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
 676 #if SANITIZER_MIPS
 677   struct __sanitizer_kernel_sigaction_t {
 678     unsigned int sa_flags;
 679     union {
 680       void (*handler)(int signo);
 681       void (*sigaction)(int signo, void *info, void *ctx);
 682     };
 683     __sanitizer_kernel_sigset_t sa_mask;
 684     void (*sa_restorer)(void);
 685   };
 686 #else
 687   struct __sanitizer_kernel_sigaction_t {
 688     union {
 689       void (*handler)(int signo);
 690       void (*sigaction)(int signo, void *info, void *ctx);
 691     };
 692     unsigned long sa_flags;
 693     void (*sa_restorer)(void);
 694     __sanitizer_kernel_sigset_t sa_mask;
 695   };
 696 #endif
 697
 698   extern uptr sig_ign;
 699   extern uptr sig_dfl;
 700   extern uptr sa_siginfo;
 701
 702 #if SANITIZER_LINUX
 703   extern int e_tabsz;
 704 #endif
 705
 706   extern int af_inet;
 707   extern int af_inet6;
 708   uptr __sanitizer_in_addr_sz(int af);
 709
 710 #if SANITIZER_LINUX || SANITIZER_FREEBSD
 711   struct __sanitizer_dl_phdr_info {
 712     uptr dlpi_addr;
 713     const char *dlpi_name;
 714     const void *dlpi_phdr;
 715     short dlpi_phnum;
 716   };
 717
 718   extern unsigned struct_ElfW_Phdr_sz;
 719 #endif
 720
 721   struct __sanitizer_addrinfo {
 722     int ai_flags;
 723     int ai_family;
 724     int ai_socktype;
 725     int ai_protocol;
 726 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD
 727     unsigned ai_addrlen;
 728     char *ai_canonname;
 729     void *ai_addr;
 730 #else // LINUX
 731     unsigned ai_addrlen;
 732     void *ai_addr;
 733     char *ai_canonname;
 734 #endif
 735     struct __sanitizer_addrinfo *ai_next;
 736   };
 737
 738   struct __sanitizer_hostent {
 739     char *h_name;
 740     char **h_aliases;
 741     int h_addrtype;
 742     int h_length;
 743     char **h_addr_list;
 744   };
 745
 746   struct __sanitizer_pollfd {
 747     int fd;
 748     short events;
 749     short revents;
 750   };
 751
 752 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD
 753   typedef unsigned __sanitizer_nfds_t;
 754 #else
 755   typedef unsigned long __sanitizer_nfds_t;
 756 #endif
 757
 758 #if !SANITIZER_ANDROID
 759 # if SANITIZER_LINUX
 760   struct __sanitizer_glob_t {
 761     uptr gl_pathc;
 762     char **gl_pathv;
 763     uptr gl_offs;
 764     int gl_flags;
 765
 766     void (*gl_closedir)(void *dirp);
 767     void *(*gl_readdir)(void *dirp);
 768     void *(*gl_opendir)(const char *);
 769     int (*gl_lstat)(const char *, void *);
 770     int (*gl_stat)(const char *, void *);
 771   };
 772 # elif SANITIZER_FREEBSD
 773   struct __sanitizer_glob_t {
 774     uptr gl_pathc;
 775     uptr gl_matchc;
 776     uptr gl_offs;
 777     int gl_flags;
 778     char **gl_pathv;
 779     int (*gl_errfunc)(const char*, int);
 780     void (*gl_closedir)(void *dirp);
 781     struct dirent *(*gl_readdir)(void *dirp);
 782     void *(*gl_opendir)(const char*);
 783     int (*gl_lstat)(const char*, void* /* struct stat* */);
 784     int (*gl_stat)(const char*, void* /* struct stat* */);
 785   };
 786 # endif  // SANITIZER_FREEBSD
 787
 788 # if SANITIZER_LINUX || SANITIZER_FREEBSD
 789   extern int glob_nomatch;
 790   extern int glob_altdirfunc;
 791 # endif
 792 #endif  // !SANITIZER_ANDROID
 793
 794   extern unsigned path_max;
 795
 796   struct __sanitizer_wordexp_t {
 797     uptr we_wordc;
 798     char **we_wordv;
 799     uptr we_offs;
 800 #if SANITIZER_FREEBSD
 801     char *we_strings;
 802     uptr we_nbytes;
 803 #endif
 804   };
 805
 806 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 807   struct __sanitizer_FILE {
 808     int _flags;
 809     char *_IO_read_ptr;
 810     char *_IO_read_end;
 811     char *_IO_read_base;
 812     char *_IO_write_base;
 813     char *_IO_write_ptr;
 814     char *_IO_write_end;
 815     char *_IO_buf_base;
 816     char *_IO_buf_end;
 817     char *_IO_save_base;
 818     char *_IO_backup_base;
 819     char *_IO_save_end;
 820     void *_markers;
 821     __sanitizer_FILE *_chain;
 822     int _fileno;
 823   };
 824 # define SANITIZER_HAS_STRUCT_FILE 1
 825 #else
 826   typedef void __sanitizer_FILE;
 827 # define SANITIZER_HAS_STRUCT_FILE 0
 828 #endif
 829
 830 #if SANITIZER_LINUX && !SANITIZER_ANDROID && \
 831   (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
 832     defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__) || \
 833     defined(__s390__))
 834   extern unsigned struct_user_regs_struct_sz;
 835   extern unsigned struct_user_fpregs_struct_sz;
 836   extern unsigned struct_user_fpxregs_struct_sz;
 837   extern unsigned struct_user_vfpregs_struct_sz;
 838
 839   extern int ptrace_peektext;
 840   extern int ptrace_peekdata;
 841   extern int ptrace_peekuser;
 842   extern int ptrace_getregs;
 843   extern int ptrace_setregs;
 844   extern int ptrace_getfpregs;
 845   extern int ptrace_setfpregs;
 846   extern int ptrace_getfpxregs;
 847   extern int ptrace_setfpxregs;
 848   extern int ptrace_getvfpregs;
 849   extern int ptrace_setvfpregs;
 850   extern int ptrace_getsiginfo;
 851   extern int ptrace_setsiginfo;
 852   extern int ptrace_getregset;
 853   extern int ptrace_setregset;
 854   extern int ptrace_geteventmsg;
 855 #endif
 856
 857 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
 858   extern unsigned struct_shminfo_sz;
 859   extern unsigned struct_shm_info_sz;
 860   extern int shmctl_ipc_stat;
 861   extern int shmctl_ipc_info;
 862   extern int shmctl_shm_info;
 863   extern int shmctl_shm_stat;
 864 #endif
 865
 866   extern int map_fixed;
 867
 868   // ioctl arguments
 869   struct __sanitizer_ifconf {
 870     int ifc_len;
 871     union {
 872       void *ifcu_req;
 873     } ifc_ifcu;
 874 #if SANITIZER_MAC
 875   } __attribute__((packed));
 876 #else
 877   };
 878 #endif
 879
 880 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 881 struct __sanitizer__obstack_chunk {
 882   char *limit;
 883   struct __sanitizer__obstack_chunk *prev;
 884 };
 885
 886 struct __sanitizer_obstack {
 887   long chunk_size;
 888   struct __sanitizer__obstack_chunk *chunk;
 889   char *object_base;
 890   char *next_free;
 891   uptr more_fields[7];
 892 };
 893
 894 typedef uptr (*__sanitizer_cookie_io_read)(void *cookie, char *buf, uptr size);
 895 typedef uptr (*__sanitizer_cookie_io_write)(void *cookie, const char *buf,
 896                                             uptr size);
 897 typedef int (*__sanitizer_cookie_io_seek)(void *cookie, u64 *offset,
 898                                           int whence);
 899 typedef int (*__sanitizer_cookie_io_close)(void *cookie);
 900
 901 struct __sanitizer_cookie_io_functions_t {
 902   __sanitizer_cookie_io_read read;
 903   __sanitizer_cookie_io_write write;
 904   __sanitizer_cookie_io_seek seek;
 905   __sanitizer_cookie_io_close close;
 906 };
 907 #endif
 908
 909 #define IOC_NRBITS 8
 910 #define IOC_TYPEBITS 8
 911 #if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__) || defined(__sparc__)
 912 #define IOC_SIZEBITS 13
 913 #define IOC_DIRBITS 3
 914 #define IOC_NONE 1U
 915 #define IOC_WRITE 4U
 916 #define IOC_READ 2U
 917 #else
 918 #define IOC_SIZEBITS 14
 919 #define IOC_DIRBITS 2
 920 #define IOC_NONE 0U
 921 #define IOC_WRITE 1U
 922 #define IOC_READ 2U
 923 #endif
 924 #define IOC_NRMASK ((1 << IOC_NRBITS) - 1)
 925 #define IOC_TYPEMASK ((1 << IOC_TYPEBITS) - 1)
 926 #define IOC_SIZEMASK ((1 << IOC_SIZEBITS) - 1)
 927 #if defined(IOC_DIRMASK)
 928 #undef IOC_DIRMASK
 929 #endif
 930 #define IOC_DIRMASK ((1 << IOC_DIRBITS) - 1)
 931 #define IOC_NRSHIFT 0
 932 #define IOC_TYPESHIFT (IOC_NRSHIFT + IOC_NRBITS)
 933 #define IOC_SIZESHIFT (IOC_TYPESHIFT + IOC_TYPEBITS)
 934 #define IOC_DIRSHIFT (IOC_SIZESHIFT + IOC_SIZEBITS)
 935 #define EVIOC_EV_MAX 0x1f
 936 #define EVIOC_ABS_MAX 0x3f
 937
 938 #define IOC_DIR(nr) (((nr) >> IOC_DIRSHIFT) & IOC_DIRMASK)
 939 #define IOC_TYPE(nr) (((nr) >> IOC_TYPESHIFT) & IOC_TYPEMASK)
 940 #define IOC_NR(nr) (((nr) >> IOC_NRSHIFT) & IOC_NRMASK)
 941
 942 #if defined(__sparc__)
 943 // In sparc the 14 bits SIZE field overlaps with the
 944 // least significant bit of DIR, so either IOC_READ or
 945 // IOC_WRITE shall be 1 in order to get a non-zero SIZE.
 946 # define IOC_SIZE(nr)                       \
 947   ((((((nr) >> 29) & 0x7) & (4U|2U)) == 0)? \
 948    0 : (((nr) >> 16) & 0x3fff))
 949 #else
 950 #define IOC_SIZE(nr) (((nr) >> IOC_SIZESHIFT) & IOC_SIZEMASK)
 951 #endif
 952
 953   extern unsigned struct_ifreq_sz;
 954   extern unsigned struct_termios_sz;
 955   extern unsigned struct_winsize_sz;
 956
 957 #if SANITIZER_LINUX
 958   extern unsigned struct_arpreq_sz;
 959   extern unsigned struct_cdrom_msf_sz;
 960   extern unsigned struct_cdrom_multisession_sz;
 961   extern unsigned struct_cdrom_read_audio_sz;
 962   extern unsigned struct_cdrom_subchnl_sz;
 963   extern unsigned struct_cdrom_ti_sz;
 964   extern unsigned struct_cdrom_tocentry_sz;
 965   extern unsigned struct_cdrom_tochdr_sz;
 966   extern unsigned struct_cdrom_volctrl_sz;
 967   extern unsigned struct_ff_effect_sz;
 968   extern unsigned struct_floppy_drive_params_sz;
 969   extern unsigned struct_floppy_drive_struct_sz;
 970   extern unsigned struct_floppy_fdc_state_sz;
 971   extern unsigned struct_floppy_max_errors_sz;
 972   extern unsigned struct_floppy_raw_cmd_sz;
 973   extern unsigned struct_floppy_struct_sz;
 974   extern unsigned struct_floppy_write_errors_sz;
 975   extern unsigned struct_format_descr_sz;
 976   extern unsigned struct_hd_driveid_sz;
 977   extern unsigned struct_hd_geometry_sz;
 978   extern unsigned struct_input_absinfo_sz;
 979   extern unsigned struct_input_id_sz;
 980   extern unsigned struct_mtpos_sz;
 981   extern unsigned struct_termio_sz;
 982   extern unsigned struct_vt_consize_sz;
 983   extern unsigned struct_vt_sizes_sz;
 984   extern unsigned struct_vt_stat_sz;
 985 #endif  // SANITIZER_LINUX
 986
 987 #if SANITIZER_LINUX || SANITIZER_FREEBSD
 988   extern unsigned struct_copr_buffer_sz;
 989   extern unsigned struct_copr_debug_buf_sz;
 990   extern unsigned struct_copr_msg_sz;
 991   extern unsigned struct_midi_info_sz;
 992   extern unsigned struct_mtget_sz;
 993   extern unsigned struct_mtop_sz;
 994   extern unsigned struct_rtentry_sz;
 995   extern unsigned struct_sbi_instrument_sz;
 996   extern unsigned struct_seq_event_rec_sz;
 997   extern unsigned struct_synth_info_sz;
 998   extern unsigned struct_vt_mode_sz;
 999 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
1000
1001 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1002   extern unsigned struct_ax25_parms_struct_sz;
1003   extern unsigned struct_cyclades_monitor_sz;
1004   extern unsigned struct_input_keymap_entry_sz;
1005   extern unsigned struct_ipx_config_data_sz;
1006   extern unsigned struct_kbdiacrs_sz;
1007   extern unsigned struct_kbentry_sz;
1008   extern unsigned struct_kbkeycode_sz;
1009   extern unsigned struct_kbsentry_sz;
1010   extern unsigned struct_mtconfiginfo_sz;
1011   extern unsigned struct_nr_parms_struct_sz;
1012   extern unsigned struct_scc_modem_sz;
1013   extern unsigned struct_scc_stat_sz;
1014   extern unsigned struct_serial_multiport_struct_sz;
1015   extern unsigned struct_serial_struct_sz;
1016   extern unsigned struct_sockaddr_ax25_sz;
1017   extern unsigned struct_unimapdesc_sz;
1018   extern unsigned struct_unimapinit_sz;
1019 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
1020
1021 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
1022   extern unsigned struct_audio_buf_info_sz;
1023   extern unsigned struct_ppp_stats_sz;
1024 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
1025
1026 #if !SANITIZER_ANDROID && !SANITIZER_MAC
1027   extern unsigned struct_sioc_sg_req_sz;
1028   extern unsigned struct_sioc_vif_req_sz;
1029 #endif
1030
1031   // ioctl request identifiers
1032
1033   // A special value to mark ioctls that are not present on the target platform,
1034   // when it can not be determined without including any system headers.
1035   extern const unsigned IOCTL_NOT_PRESENT;
1036
1037   extern unsigned IOCTL_FIOASYNC;
1038   extern unsigned IOCTL_FIOCLEX;
1039   extern unsigned IOCTL_FIOGETOWN;
1040   extern unsigned IOCTL_FIONBIO;
1041   extern unsigned IOCTL_FIONCLEX;
1042   extern unsigned IOCTL_FIOSETOWN;
1043   extern unsigned IOCTL_SIOCADDMULTI;
1044   extern unsigned IOCTL_SIOCATMARK;
1045   extern unsigned IOCTL_SIOCDELMULTI;
1046   extern unsigned IOCTL_SIOCGIFADDR;
1047   extern unsigned IOCTL_SIOCGIFBRDADDR;
1048   extern unsigned IOCTL_SIOCGIFCONF;
1049   extern unsigned IOCTL_SIOCGIFDSTADDR;
1050   extern unsigned IOCTL_SIOCGIFFLAGS;
1051   extern unsigned IOCTL_SIOCGIFMETRIC;
1052   extern unsigned IOCTL_SIOCGIFMTU;
1053   extern unsigned IOCTL_SIOCGIFNETMASK;
1054   extern unsigned IOCTL_SIOCGPGRP;
1055   extern unsigned IOCTL_SIOCSIFADDR;
1056   extern unsigned IOCTL_SIOCSIFBRDADDR;
1057   extern unsigned IOCTL_SIOCSIFDSTADDR;
1058   extern unsigned IOCTL_SIOCSIFFLAGS;
1059   extern unsigned IOCTL_SIOCSIFMETRIC;
1060   extern unsigned IOCTL_SIOCSIFMTU;
1061   extern unsigned IOCTL_SIOCSIFNETMASK;
1062   extern unsigned IOCTL_SIOCSPGRP;
1063   extern unsigned IOCTL_TIOCCONS;
1064   extern unsigned IOCTL_TIOCEXCL;
1065   extern unsigned IOCTL_TIOCGETD;
1066   extern unsigned IOCTL_TIOCGPGRP;
1067   extern unsigned IOCTL_TIOCGWINSZ;
1068   extern unsigned IOCTL_TIOCMBIC;
1069   extern unsigned IOCTL_TIOCMBIS;
1070   extern unsigned IOCTL_TIOCMGET;
1071   extern unsigned IOCTL_TIOCMSET;
1072   extern unsigned IOCTL_TIOCNOTTY;
1073   extern unsigned IOCTL_TIOCNXCL;
1074   extern unsigned IOCTL_TIOCOUTQ;
1075   extern unsigned IOCTL_TIOCPKT;
1076   extern unsigned IOCTL_TIOCSCTTY;
1077   extern unsigned IOCTL_TIOCSETD;
1078   extern unsigned IOCTL_TIOCSPGRP;
1079   extern unsigned IOCTL_TIOCSTI;
1080   extern unsigned IOCTL_TIOCSWINSZ;
1081 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
1082   extern unsigned IOCTL_SIOCGETSGCNT;
1083   extern unsigned IOCTL_SIOCGETVIFCNT;
1084 #endif
1085 #if SANITIZER_LINUX
1086   extern unsigned IOCTL_EVIOCGABS;
1087   extern unsigned IOCTL_EVIOCGBIT;
1088   extern unsigned IOCTL_EVIOCGEFFECTS;
1089   extern unsigned IOCTL_EVIOCGID;
1090   extern unsigned IOCTL_EVIOCGKEY;
1091   extern unsigned IOCTL_EVIOCGKEYCODE;
1092   extern unsigned IOCTL_EVIOCGLED;
1093   extern unsigned IOCTL_EVIOCGNAME;
1094   extern unsigned IOCTL_EVIOCGPHYS;
1095   extern unsigned IOCTL_EVIOCGRAB;
1096   extern unsigned IOCTL_EVIOCGREP;
1097   extern unsigned IOCTL_EVIOCGSND;
1098   extern unsigned IOCTL_EVIOCGSW;
1099   extern unsigned IOCTL_EVIOCGUNIQ;
1100   extern unsigned IOCTL_EVIOCGVERSION;
1101   extern unsigned IOCTL_EVIOCRMFF;
1102   extern unsigned IOCTL_EVIOCSABS;
1103   extern unsigned IOCTL_EVIOCSFF;
1104   extern unsigned IOCTL_EVIOCSKEYCODE;
1105   extern unsigned IOCTL_EVIOCSREP;
1106   extern unsigned IOCTL_BLKFLSBUF;
1107   extern unsigned IOCTL_BLKGETSIZE;
1108   extern unsigned IOCTL_BLKRAGET;
1109   extern unsigned IOCTL_BLKRASET;
1110   extern unsigned IOCTL_BLKROGET;
1111   extern unsigned IOCTL_BLKROSET;
1112   extern unsigned IOCTL_BLKRRPART;
1113   extern unsigned IOCTL_CDROMAUDIOBUFSIZ;
1114   extern unsigned IOCTL_CDROMEJECT;
1115   extern unsigned IOCTL_CDROMEJECT_SW;
1116   extern unsigned IOCTL_CDROMMULTISESSION;
1117   extern unsigned IOCTL_CDROMPAUSE;
1118   extern unsigned IOCTL_CDROMPLAYMSF;
1119   extern unsigned IOCTL_CDROMPLAYTRKIND;
1120   extern unsigned IOCTL_CDROMREADAUDIO;
1121   extern unsigned IOCTL_CDROMREADCOOKED;
1122   extern unsigned IOCTL_CDROMREADMODE1;
1123   extern unsigned IOCTL_CDROMREADMODE2;
1124   extern unsigned IOCTL_CDROMREADRAW;
1125   extern unsigned IOCTL_CDROMREADTOCENTRY;
1126   extern unsigned IOCTL_CDROMREADTOCHDR;
1127   extern unsigned IOCTL_CDROMRESET;
1128   extern unsigned IOCTL_CDROMRESUME;
1129   extern unsigned IOCTL_CDROMSEEK;
1130   extern unsigned IOCTL_CDROMSTART;
1131   extern unsigned IOCTL_CDROMSTOP;
1132   extern unsigned IOCTL_CDROMSUBCHNL;
1133   extern unsigned IOCTL_CDROMVOLCTRL;
1134   extern unsigned IOCTL_CDROMVOLREAD;
1135   extern unsigned IOCTL_CDROM_GET_UPC;
1136   extern unsigned IOCTL_FDCLRPRM;
1137   extern unsigned IOCTL_FDDEFPRM;
1138   extern unsigned IOCTL_FDFLUSH;
1139   extern unsigned IOCTL_FDFMTBEG;
1140   extern unsigned IOCTL_FDFMTEND;
1141   extern unsigned IOCTL_FDFMTTRK;
1142   extern unsigned IOCTL_FDGETDRVPRM;
1143   extern unsigned IOCTL_FDGETDRVSTAT;
1144   extern unsigned IOCTL_FDGETDRVTYP;
1145   extern unsigned IOCTL_FDGETFDCSTAT;
1146   extern unsigned IOCTL_FDGETMAXERRS;
1147   extern unsigned IOCTL_FDGETPRM;
1148   extern unsigned IOCTL_FDMSGOFF;
1149   extern unsigned IOCTL_FDMSGON;
1150   extern unsigned IOCTL_FDPOLLDRVSTAT;
1151   extern unsigned IOCTL_FDRAWCMD;
1152   extern unsigned IOCTL_FDRESET;
1153   extern unsigned IOCTL_FDSETDRVPRM;
1154   extern unsigned IOCTL_FDSETEMSGTRESH;
1155   extern unsigned IOCTL_FDSETMAXERRS;
1156   extern unsigned IOCTL_FDSETPRM;
1157   extern unsigned IOCTL_FDTWADDLE;
1158   extern unsigned IOCTL_FDWERRORCLR;
1159   extern unsigned IOCTL_FDWERRORGET;
1160   extern unsigned IOCTL_HDIO_DRIVE_CMD;
1161   extern unsigned IOCTL_HDIO_GETGEO;
1162   extern unsigned IOCTL_HDIO_GET_32BIT;
1163   extern unsigned IOCTL_HDIO_GET_DMA;
1164   extern unsigned IOCTL_HDIO_GET_IDENTITY;
1165   extern unsigned IOCTL_HDIO_GET_KEEPSETTINGS;
1166   extern unsigned IOCTL_HDIO_GET_MULTCOUNT;
1167   extern unsigned IOCTL_HDIO_GET_NOWERR;
1168   extern unsigned IOCTL_HDIO_GET_UNMASKINTR;
1169   extern unsigned IOCTL_HDIO_SET_32BIT;
1170   extern unsigned IOCTL_HDIO_SET_DMA;
1171   extern unsigned IOCTL_HDIO_SET_KEEPSETTINGS;
1172   extern unsigned IOCTL_HDIO_SET_MULTCOUNT;
1173   extern unsigned IOCTL_HDIO_SET_NOWERR;
1174   extern unsigned IOCTL_HDIO_SET_UNMASKINTR;
1175   extern unsigned IOCTL_MTIOCPOS;
1176   extern unsigned IOCTL_PPPIOCGASYNCMAP;
1177   extern unsigned IOCTL_PPPIOCGDEBUG;
1178   extern unsigned IOCTL_PPPIOCGFLAGS;
1179   extern unsigned IOCTL_PPPIOCGUNIT;
1180   extern unsigned IOCTL_PPPIOCGXASYNCMAP;
1181   extern unsigned IOCTL_PPPIOCSASYNCMAP;
1182   extern unsigned IOCTL_PPPIOCSDEBUG;
1183   extern unsigned IOCTL_PPPIOCSFLAGS;
1184   extern unsigned IOCTL_PPPIOCSMAXCID;
1185   extern unsigned IOCTL_PPPIOCSMRU;
1186   extern unsigned IOCTL_PPPIOCSXASYNCMAP;
1187   extern unsigned IOCTL_SIOCDARP;
1188   extern unsigned IOCTL_SIOCDRARP;
1189   extern unsigned IOCTL_SIOCGARP;
1190   extern unsigned IOCTL_SIOCGIFENCAP;
1191   extern unsigned IOCTL_SIOCGIFHWADDR;
1192   extern unsigned IOCTL_SIOCGIFMAP;
1193   extern unsigned IOCTL_SIOCGIFMEM;
1194   extern unsigned IOCTL_SIOCGIFNAME;
1195   extern unsigned IOCTL_SIOCGIFSLAVE;
1196   extern unsigned IOCTL_SIOCGRARP;
1197   extern unsigned IOCTL_SIOCGSTAMP;
1198   extern unsigned IOCTL_SIOCSARP;
1199   extern unsigned IOCTL_SIOCSIFENCAP;
1200   extern unsigned IOCTL_SIOCSIFHWADDR;
1201   extern unsigned IOCTL_SIOCSIFLINK;
1202   extern unsigned IOCTL_SIOCSIFMAP;
1203   extern unsigned IOCTL_SIOCSIFMEM;
1204   extern unsigned IOCTL_SIOCSIFSLAVE;
1205   extern unsigned IOCTL_SIOCSRARP;
1206   extern unsigned IOCTL_SNDCTL_COPR_HALT;
1207   extern unsigned IOCTL_SNDCTL_COPR_LOAD;
1208   extern unsigned IOCTL_SNDCTL_COPR_RCODE;
1209   extern unsigned IOCTL_SNDCTL_COPR_RCVMSG;
1210   extern unsigned IOCTL_SNDCTL_COPR_RDATA;
1211   extern unsigned IOCTL_SNDCTL_COPR_RESET;
1212   extern unsigned IOCTL_SNDCTL_COPR_RUN;
1213   extern unsigned IOCTL_SNDCTL_COPR_SENDMSG;
1214   extern unsigned IOCTL_SNDCTL_COPR_WCODE;
1215   extern unsigned IOCTL_SNDCTL_COPR_WDATA;
1216   extern unsigned IOCTL_TCFLSH;
1217   extern unsigned IOCTL_TCGETA;
1218   extern unsigned IOCTL_TCGETS;
1219   extern unsigned IOCTL_TCSBRK;
1220   extern unsigned IOCTL_TCSBRKP;
1221   extern unsigned IOCTL_TCSETA;
1222   extern unsigned IOCTL_TCSETAF;
1223   extern unsigned IOCTL_TCSETAW;
1224   extern unsigned IOCTL_TCSETS;
1225   extern unsigned IOCTL_TCSETSF;
1226   extern unsigned IOCTL_TCSETSW;
1227   extern unsigned IOCTL_TCXONC;
1228   extern unsigned IOCTL_TIOCGLCKTRMIOS;
1229   extern unsigned IOCTL_TIOCGSOFTCAR;
1230   extern unsigned IOCTL_TIOCINQ;
1231   extern unsigned IOCTL_TIOCLINUX;
1232   extern unsigned IOCTL_TIOCSERCONFIG;
1233   extern unsigned IOCTL_TIOCSERGETLSR;
1234   extern unsigned IOCTL_TIOCSERGWILD;
1235   extern unsigned IOCTL_TIOCSERSWILD;
1236   extern unsigned IOCTL_TIOCSLCKTRMIOS;
1237   extern unsigned IOCTL_TIOCSSOFTCAR;
1238   extern unsigned IOCTL_VT_DISALLOCATE;
1239   extern unsigned IOCTL_VT_GETSTATE;
1240   extern unsigned IOCTL_VT_RESIZE;
1241   extern unsigned IOCTL_VT_RESIZEX;
1242   extern unsigned IOCTL_VT_SENDSIG;
1243 #endif  // SANITIZER_LINUX
1244 #if SANITIZER_LINUX || SANITIZER_FREEBSD
1245   extern unsigned IOCTL_MTIOCGET;
1246   extern unsigned IOCTL_MTIOCTOP;
1247   extern unsigned IOCTL_SIOCADDRT;
1248   extern unsigned IOCTL_SIOCDELRT;
1249   extern unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE;
1250   extern unsigned IOCTL_SNDCTL_DSP_GETFMTS;
1251   extern unsigned IOCTL_SNDCTL_DSP_NONBLOCK;
1252   extern unsigned IOCTL_SNDCTL_DSP_POST;
1253   extern unsigned IOCTL_SNDCTL_DSP_RESET;
1254   extern unsigned IOCTL_SNDCTL_DSP_SETFMT;
1255   extern unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT;
1256   extern unsigned IOCTL_SNDCTL_DSP_SPEED;
1257   extern unsigned IOCTL_SNDCTL_DSP_STEREO;
1258   extern unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE;
1259   extern unsigned IOCTL_SNDCTL_DSP_SYNC;
1260   extern unsigned IOCTL_SNDCTL_FM_4OP_ENABLE;
1261   extern unsigned IOCTL_SNDCTL_FM_LOAD_INSTR;
1262   extern unsigned IOCTL_SNDCTL_MIDI_INFO;
1263   extern unsigned IOCTL_SNDCTL_MIDI_PRETIME;
1264   extern unsigned IOCTL_SNDCTL_SEQ_CTRLRATE;
1265   extern unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT;
1266   extern unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT;
1267   extern unsigned IOCTL_SNDCTL_SEQ_NRMIDIS;
1268   extern unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS;
1269   extern unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND;
1270   extern unsigned IOCTL_SNDCTL_SEQ_PANIC;
1271   extern unsigned IOCTL_SNDCTL_SEQ_PERCMODE;
1272   extern unsigned IOCTL_SNDCTL_SEQ_RESET;
1273   extern unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES;
1274   extern unsigned IOCTL_SNDCTL_SEQ_SYNC;
1275   extern unsigned IOCTL_SNDCTL_SEQ_TESTMIDI;
1276   extern unsigned IOCTL_SNDCTL_SEQ_THRESHOLD;
1277   extern unsigned IOCTL_SNDCTL_SYNTH_INFO;
1278   extern unsigned IOCTL_SNDCTL_SYNTH_MEMAVL;
1279   extern unsigned IOCTL_SNDCTL_TMR_CONTINUE;
1280   extern unsigned IOCTL_SNDCTL_TMR_METRONOME;
1281   extern unsigned IOCTL_SNDCTL_TMR_SELECT;
1282   extern unsigned IOCTL_SNDCTL_TMR_SOURCE;
1283   extern unsigned IOCTL_SNDCTL_TMR_START;
1284   extern unsigned IOCTL_SNDCTL_TMR_STOP;
1285   extern unsigned IOCTL_SNDCTL_TMR_TEMPO;
1286   extern unsigned IOCTL_SNDCTL_TMR_TIMEBASE;
1287   extern unsigned IOCTL_SOUND_MIXER_READ_ALTPCM;
1288   extern unsigned IOCTL_SOUND_MIXER_READ_BASS;
1289   extern unsigned IOCTL_SOUND_MIXER_READ_CAPS;
1290   extern unsigned IOCTL_SOUND_MIXER_READ_CD;
1291   extern unsigned IOCTL_SOUND_MIXER_READ_DEVMASK;
1292   extern unsigned IOCTL_SOUND_MIXER_READ_ENHANCE;
1293   extern unsigned IOCTL_SOUND_MIXER_READ_IGAIN;
1294   extern unsigned IOCTL_SOUND_MIXER_READ_IMIX;
1295   extern unsigned IOCTL_SOUND_MIXER_READ_LINE1;
1296   extern unsigned IOCTL_SOUND_MIXER_READ_LINE2;
1297   extern unsigned IOCTL_SOUND_MIXER_READ_LINE3;
1298   extern unsigned IOCTL_SOUND_MIXER_READ_LINE;
1299   extern unsigned IOCTL_SOUND_MIXER_READ_LOUD;
1300   extern unsigned IOCTL_SOUND_MIXER_READ_MIC;
1301   extern unsigned IOCTL_SOUND_MIXER_READ_MUTE;
1302   extern unsigned IOCTL_SOUND_MIXER_READ_OGAIN;
1303   extern unsigned IOCTL_SOUND_MIXER_READ_PCM;
1304   extern unsigned IOCTL_SOUND_MIXER_READ_RECLEV;
1305   extern unsigned IOCTL_SOUND_MIXER_READ_RECMASK;
1306   extern unsigned IOCTL_SOUND_MIXER_READ_RECSRC;
1307   extern unsigned IOCTL_SOUND_MIXER_READ_SPEAKER;
1308   extern unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS;
1309   extern unsigned IOCTL_SOUND_MIXER_READ_SYNTH;
1310   extern unsigned IOCTL_SOUND_MIXER_READ_TREBLE;
1311   extern unsigned IOCTL_SOUND_MIXER_READ_VOLUME;
1312   extern unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM;
1313   extern unsigned IOCTL_SOUND_MIXER_WRITE_BASS;
1314   extern unsigned IOCTL_SOUND_MIXER_WRITE_CD;
1315   extern unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE;
1316   extern unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN;
1317   extern unsigned IOCTL_SOUND_MIXER_WRITE_IMIX;
1318   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE1;
1319   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE2;
1320   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE3;
1321   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE;
1322   extern unsigned IOCTL_SOUND_MIXER_WRITE_LOUD;
1323   extern unsigned IOCTL_SOUND_MIXER_WRITE_MIC;
1324   extern unsigned IOCTL_SOUND_MIXER_WRITE_MUTE;
1325   extern unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN;
1326   extern unsigned IOCTL_SOUND_MIXER_WRITE_PCM;
1327   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV;
1328   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC;
1329   extern unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER;
1330   extern unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH;
1331   extern unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE;
1332   extern unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME;
1333   extern unsigned IOCTL_SOUND_PCM_READ_BITS;
1334   extern unsigned IOCTL_SOUND_PCM_READ_CHANNELS;
1335   extern unsigned IOCTL_SOUND_PCM_READ_FILTER;
1336   extern unsigned IOCTL_SOUND_PCM_READ_RATE;
1337   extern unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS;
1338   extern unsigned IOCTL_SOUND_PCM_WRITE_FILTER;
1339   extern unsigned IOCTL_VT_ACTIVATE;
1340   extern unsigned IOCTL_VT_GETMODE;
1341   extern unsigned IOCTL_VT_OPENQRY;
1342   extern unsigned IOCTL_VT_RELDISP;
1343   extern unsigned IOCTL_VT_SETMODE;
1344   extern unsigned IOCTL_VT_WAITACTIVE;
1345 #endif  // SANITIZER_LINUX || SANITIZER_FREEBSD
1346
1347 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1348   extern unsigned IOCTL_CYGETDEFTHRESH;
1349   extern unsigned IOCTL_CYGETDEFTIMEOUT;
1350   extern unsigned IOCTL_CYGETMON;
1351   extern unsigned IOCTL_CYGETTHRESH;
1352   extern unsigned IOCTL_CYGETTIMEOUT;
1353   extern unsigned IOCTL_CYSETDEFTHRESH;
1354   extern unsigned IOCTL_CYSETDEFTIMEOUT;
1355   extern unsigned IOCTL_CYSETTHRESH;
1356   extern unsigned IOCTL_CYSETTIMEOUT;
1357   extern unsigned IOCTL_EQL_EMANCIPATE;
1358   extern unsigned IOCTL_EQL_ENSLAVE;
1359   extern unsigned IOCTL_EQL_GETMASTRCFG;
1360   extern unsigned IOCTL_EQL_GETSLAVECFG;
1361   extern unsigned IOCTL_EQL_SETMASTRCFG;
1362   extern unsigned IOCTL_EQL_SETSLAVECFG;
1363   extern unsigned IOCTL_EVIOCGKEYCODE_V2;
1364   extern unsigned IOCTL_EVIOCGPROP;
1365   extern unsigned IOCTL_EVIOCSKEYCODE_V2;
1366   extern unsigned IOCTL_FS_IOC_GETFLAGS;
1367   extern unsigned IOCTL_FS_IOC_GETVERSION;
1368   extern unsigned IOCTL_FS_IOC_SETFLAGS;
1369   extern unsigned IOCTL_FS_IOC_SETVERSION;
1370   extern unsigned IOCTL_GIO_CMAP;
1371   extern unsigned IOCTL_GIO_FONT;
1372   extern unsigned IOCTL_GIO_UNIMAP;
1373   extern unsigned IOCTL_GIO_UNISCRNMAP;
1374   extern unsigned IOCTL_KDADDIO;
1375   extern unsigned IOCTL_KDDELIO;
1376   extern unsigned IOCTL_KDGETKEYCODE;
1377   extern unsigned IOCTL_KDGKBDIACR;
1378   extern unsigned IOCTL_KDGKBENT;
1379   extern unsigned IOCTL_KDGKBLED;
1380   extern unsigned IOCTL_KDGKBMETA;
1381   extern unsigned IOCTL_KDGKBSENT;
1382   extern unsigned IOCTL_KDMAPDISP;
1383   extern unsigned IOCTL_KDSETKEYCODE;
1384   extern unsigned IOCTL_KDSIGACCEPT;
1385   extern unsigned IOCTL_KDSKBDIACR;
1386   extern unsigned IOCTL_KDSKBENT;
1387   extern unsigned IOCTL_KDSKBLED;
1388   extern unsigned IOCTL_KDSKBMETA;
1389   extern unsigned IOCTL_KDSKBSENT;
1390   extern unsigned IOCTL_KDUNMAPDISP;
1391   extern unsigned IOCTL_LPABORT;
1392   extern unsigned IOCTL_LPABORTOPEN;
1393   extern unsigned IOCTL_LPCAREFUL;
1394   extern unsigned IOCTL_LPCHAR;
1395   extern unsigned IOCTL_LPGETIRQ;
1396   extern unsigned IOCTL_LPGETSTATUS;
1397   extern unsigned IOCTL_LPRESET;
1398   extern unsigned IOCTL_LPSETIRQ;
1399   extern unsigned IOCTL_LPTIME;
1400   extern unsigned IOCTL_LPWAIT;
1401   extern unsigned IOCTL_MTIOCGETCONFIG;
1402   extern unsigned IOCTL_MTIOCSETCONFIG;
1403   extern unsigned IOCTL_PIO_CMAP;
1404   extern unsigned IOCTL_PIO_FONT;
1405   extern unsigned IOCTL_PIO_UNIMAP;
1406   extern unsigned IOCTL_PIO_UNIMAPCLR;
1407   extern unsigned IOCTL_PIO_UNISCRNMAP;
1408   extern unsigned IOCTL_SCSI_IOCTL_GET_IDLUN;
1409   extern unsigned IOCTL_SCSI_IOCTL_PROBE_HOST;
1410   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE;
1411   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE;
1412   extern unsigned IOCTL_SIOCAIPXITFCRT;
1413   extern unsigned IOCTL_SIOCAIPXPRISLT;
1414   extern unsigned IOCTL_SIOCAX25ADDUID;
1415   extern unsigned IOCTL_SIOCAX25DELUID;
1416   extern unsigned IOCTL_SIOCAX25GETPARMS;
1417   extern unsigned IOCTL_SIOCAX25GETUID;
1418   extern unsigned IOCTL_SIOCAX25NOUID;
1419   extern unsigned IOCTL_SIOCAX25SETPARMS;
1420   extern unsigned IOCTL_SIOCDEVPLIP;
1421   extern unsigned IOCTL_SIOCIPXCFGDATA;
1422   extern unsigned IOCTL_SIOCNRDECOBS;
1423   extern unsigned IOCTL_SIOCNRGETPARMS;
1424   extern unsigned IOCTL_SIOCNRRTCTL;
1425   extern unsigned IOCTL_SIOCNRSETPARMS;
1426   extern unsigned IOCTL_SNDCTL_DSP_GETISPACE;
1427   extern unsigned IOCTL_SNDCTL_DSP_GETOSPACE;
1428   extern unsigned IOCTL_TIOCGSERIAL;
1429   extern unsigned IOCTL_TIOCSERGETMULTI;
1430   extern unsigned IOCTL_TIOCSERSETMULTI;
1431   extern unsigned IOCTL_TIOCSSERIAL;
1432 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
1433
1434 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
1435   extern unsigned IOCTL_GIO_SCRNMAP;
1436   extern unsigned IOCTL_KDDISABIO;
1437   extern unsigned IOCTL_KDENABIO;
1438   extern unsigned IOCTL_KDGETLED;
1439   extern unsigned IOCTL_KDGETMODE;
1440   extern unsigned IOCTL_KDGKBMODE;
1441   extern unsigned IOCTL_KDGKBTYPE;
1442   extern unsigned IOCTL_KDMKTONE;
1443   extern unsigned IOCTL_KDSETLED;
1444   extern unsigned IOCTL_KDSETMODE;
1445   extern unsigned IOCTL_KDSKBMODE;
1446   extern unsigned IOCTL_KIOCSOUND;
1447   extern unsigned IOCTL_PIO_SCRNMAP;
1448 #endif
1449
1450   extern const int errno_EINVAL;
1451   extern const int errno_EOWNERDEAD;
1452
1453   extern const int si_SEGV_MAPERR;
1454   extern const int si_SEGV_ACCERR;
1455 }  // namespace __sanitizer
1456
1457 #define CHECK_TYPE_SIZE(TYPE) \
1458   COMPILER_CHECK(sizeof(__sanitizer_##TYPE) == sizeof(TYPE))
1459
1460 #define CHECK_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1461   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
1462                  sizeof(((CLASS *) NULL)->MEMBER));                \
1463   COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) ==          \
1464                  offsetof(CLASS, MEMBER))
1465
1466 // For sigaction, which is a function and struct at the same time,
1467 // and thus requires explicit "struct" in sizeof() expression.
1468 #define CHECK_STRUCT_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1469   COMPILER_CHECK(sizeof(((struct __sanitizer_##CLASS *) NULL)->MEMBER) == \
1470                  sizeof(((struct CLASS *) NULL)->MEMBER));                \
1471   COMPILER_CHECK(offsetof(struct __sanitizer_##CLASS, MEMBER) ==          \
1472                  offsetof(struct CLASS, MEMBER))
1473
1474 #endif