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      1 //===-- sanitizer_platform_limits_posix.h ---------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file is a part of Sanitizer common code.
     11 //
     12 // Sizes and layouts of platform-specific POSIX data structures.
     13 //===----------------------------------------------------------------------===//
     14 
     15 #ifndef SANITIZER_PLATFORM_LIMITS_POSIX_H
     16 #define SANITIZER_PLATFORM_LIMITS_POSIX_H
     17 
     18 #include "sanitizer_internal_defs.h"
     19 #include "sanitizer_platform.h"
     20 
     21 #if SANITIZER_FREEBSD
     22 // FreeBSD's dlopen() returns a pointer to an Obj_Entry structure that
     23 // incroporates the map structure.
     24 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) \
     25     ((link_map*)((handle) == nullptr ? nullptr : ((char*)(handle) + 544)))
     26 #else
     27 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) ((link_map*)(handle))
     28 #endif  // !SANITIZER_FREEBSD
     29 
     30 namespace __sanitizer {
     31   extern unsigned struct_utsname_sz;
     32   extern unsigned struct_stat_sz;
     33 #if !SANITIZER_FREEBSD && !SANITIZER_IOS
     34   extern unsigned struct_stat64_sz;
     35 #endif
     36   extern unsigned struct_rusage_sz;
     37   extern unsigned siginfo_t_sz;
     38   extern unsigned struct_itimerval_sz;
     39   extern unsigned pthread_t_sz;
     40   extern unsigned pthread_cond_t_sz;
     41   extern unsigned pid_t_sz;
     42   extern unsigned timeval_sz;
     43   extern unsigned uid_t_sz;
     44   extern unsigned gid_t_sz;
     45   extern unsigned mbstate_t_sz;
     46   extern unsigned struct_timezone_sz;
     47   extern unsigned struct_tms_sz;
     48   extern unsigned struct_itimerspec_sz;
     49   extern unsigned struct_sigevent_sz;
     50   extern unsigned struct_sched_param_sz;
     51   extern unsigned struct_statfs64_sz;
     52 
     53 #if !SANITIZER_ANDROID
     54   extern unsigned struct_statfs_sz;
     55   extern unsigned struct_sockaddr_sz;
     56   extern unsigned ucontext_t_sz;
     57 #endif // !SANITIZER_ANDROID
     58 
     59 #if SANITIZER_LINUX
     60 
     61 #if defined(__x86_64__)
     62   const unsigned struct_kernel_stat_sz = 144;
     63   const unsigned struct_kernel_stat64_sz = 0;
     64 #elif defined(__i386__)
     65   const unsigned struct_kernel_stat_sz = 64;
     66   const unsigned struct_kernel_stat64_sz = 96;
     67 #elif defined(__arm__)
     68   const unsigned struct_kernel_stat_sz = 64;
     69   const unsigned struct_kernel_stat64_sz = 104;
     70 #elif defined(__aarch64__)
     71   const unsigned struct_kernel_stat_sz = 128;
     72   const unsigned struct_kernel_stat64_sz = 104;
     73 #elif defined(__powerpc__) && !defined(__powerpc64__)
     74   const unsigned struct_kernel_stat_sz = 72;
     75   const unsigned struct_kernel_stat64_sz = 104;
     76 #elif defined(__powerpc64__)
     77   const unsigned struct_kernel_stat_sz = 144;
     78   const unsigned struct_kernel_stat64_sz = 104;
     79 #elif defined(__mips__)
     80   const unsigned struct_kernel_stat_sz =
     81                  SANITIZER_ANDROID ? FIRST_32_SECOND_64(104, 128) :
     82                                      FIRST_32_SECOND_64(144, 216);
     83   const unsigned struct_kernel_stat64_sz = 104;
     84 #elif defined(__s390__) && !defined(__s390x__)
     85   const unsigned struct_kernel_stat_sz = 64;
     86   const unsigned struct_kernel_stat64_sz = 104;
     87 #elif defined(__s390x__)
     88   const unsigned struct_kernel_stat_sz = 144;
     89   const unsigned struct_kernel_stat64_sz = 0;
     90 #endif
     91   struct __sanitizer_perf_event_attr {
     92     unsigned type;
     93     unsigned size;
     94     // More fields that vary with the kernel version.
     95   };
     96 
     97   extern unsigned struct_epoll_event_sz;
     98   extern unsigned struct_sysinfo_sz;
     99   extern unsigned __user_cap_header_struct_sz;
    100   extern unsigned __user_cap_data_struct_sz;
    101   extern unsigned struct_new_utsname_sz;
    102   extern unsigned struct_old_utsname_sz;
    103   extern unsigned struct_oldold_utsname_sz;
    104 
    105   const unsigned struct_kexec_segment_sz = 4 * sizeof(unsigned long);
    106 #endif  // SANITIZER_LINUX
    107 
    108 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    109 
    110 #if defined(__powerpc64__) || defined(__s390__)
    111   const unsigned struct___old_kernel_stat_sz = 0;
    112 #else
    113   const unsigned struct___old_kernel_stat_sz = 32;
    114 #endif
    115 
    116   extern unsigned struct_rlimit_sz;
    117   extern unsigned struct_utimbuf_sz;
    118   extern unsigned struct_timespec_sz;
    119 
    120   struct __sanitizer_iocb {
    121     u64   aio_data;
    122     u32   aio_key_or_aio_reserved1; // Simply crazy.
    123     u32   aio_reserved1_or_aio_key; // Luckily, we don't need these.
    124     u16   aio_lio_opcode;
    125     s16   aio_reqprio;
    126     u32   aio_fildes;
    127     u64   aio_buf;
    128     u64   aio_nbytes;
    129     s64   aio_offset;
    130     u64   aio_reserved2;
    131     u64   aio_reserved3;
    132   };
    133 
    134   struct __sanitizer_io_event {
    135     u64 data;
    136     u64 obj;
    137     u64 res;
    138     u64 res2;
    139   };
    140 
    141   const unsigned iocb_cmd_pread = 0;
    142   const unsigned iocb_cmd_pwrite = 1;
    143   const unsigned iocb_cmd_preadv = 7;
    144   const unsigned iocb_cmd_pwritev = 8;
    145 
    146   struct __sanitizer___sysctl_args {
    147     int *name;
    148     int nlen;
    149     void *oldval;
    150     uptr *oldlenp;
    151     void *newval;
    152     uptr newlen;
    153     unsigned long ___unused[4];
    154   };
    155 
    156   const unsigned old_sigset_t_sz = sizeof(unsigned long);
    157 
    158   struct __sanitizer_sem_t {
    159 #if SANITIZER_ANDROID && defined(_LP64)
    160     int data[4];
    161 #elif SANITIZER_ANDROID && !defined(_LP64)
    162     int data;
    163 #elif SANITIZER_LINUX
    164     uptr data[4];
    165 #elif SANITIZER_FREEBSD
    166     u32 data[4];
    167 #endif
    168   };
    169 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    170 
    171 #if SANITIZER_ANDROID
    172   struct __sanitizer_mallinfo {
    173     uptr v[10];
    174   };
    175 #endif
    176 
    177 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    178   struct __sanitizer_mallinfo {
    179     int v[10];
    180   };
    181 
    182   extern unsigned struct_ustat_sz;
    183   extern unsigned struct_rlimit64_sz;
    184   extern unsigned struct_statvfs64_sz;
    185 
    186   struct __sanitizer_ipc_perm {
    187     int __key;
    188     int uid;
    189     int gid;
    190     int cuid;
    191     int cgid;
    192 #ifdef __powerpc__
    193     unsigned mode;
    194     unsigned __seq;
    195     u64 __unused1;
    196     u64 __unused2;
    197 #elif defined(__mips__) || defined(__aarch64__) || defined(__s390x__)
    198     unsigned int mode;
    199     unsigned short __seq;
    200     unsigned short __pad1;
    201     unsigned long __unused1;
    202     unsigned long __unused2;
    203 #else
    204     unsigned short mode;
    205     unsigned short __pad1;
    206     unsigned short __seq;
    207     unsigned short __pad2;
    208 #if defined(__x86_64__) && !defined(_LP64)
    209     u64 __unused1;
    210     u64 __unused2;
    211 #else
    212     unsigned long __unused1;
    213     unsigned long __unused2;
    214 #endif
    215 #endif
    216   };
    217 
    218   struct __sanitizer_shmid_ds {
    219     __sanitizer_ipc_perm shm_perm;
    220   #ifndef __powerpc__
    221     uptr shm_segsz;
    222   #elif !defined(__powerpc64__)
    223     uptr __unused0;
    224   #endif
    225   #if defined(__x86_64__) && !defined(_LP64)
    226     u64 shm_atime;
    227     u64 shm_dtime;
    228     u64 shm_ctime;
    229   #else
    230     uptr shm_atime;
    231   #if !defined(_LP64) && !defined(__mips__)
    232     uptr __unused1;
    233   #endif
    234     uptr shm_dtime;
    235   #if !defined(_LP64) && !defined(__mips__)
    236     uptr __unused2;
    237   #endif
    238     uptr shm_ctime;
    239   #if !defined(_LP64) && !defined(__mips__)
    240     uptr __unused3;
    241   #endif
    242   #endif
    243   #ifdef __powerpc__
    244     uptr shm_segsz;
    245   #endif
    246     int shm_cpid;
    247     int shm_lpid;
    248   #if defined(__x86_64__) && !defined(_LP64)
    249     u64 shm_nattch;
    250     u64 __unused4;
    251     u64 __unused5;
    252   #else
    253     uptr shm_nattch;
    254     uptr __unused4;
    255     uptr __unused5;
    256   #endif
    257   };
    258 #elif SANITIZER_FREEBSD
    259   struct __sanitizer_ipc_perm {
    260     unsigned int cuid;
    261     unsigned int cgid;
    262     unsigned int uid;
    263     unsigned int gid;
    264     unsigned short mode;
    265     unsigned short seq;
    266     long key;
    267   };
    268 
    269   struct __sanitizer_shmid_ds {
    270     __sanitizer_ipc_perm shm_perm;
    271     unsigned long shm_segsz;
    272     unsigned int shm_lpid;
    273     unsigned int shm_cpid;
    274     int shm_nattch;
    275     unsigned long shm_atime;
    276     unsigned long shm_dtime;
    277     unsigned long shm_ctime;
    278   };
    279 #endif
    280 
    281 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    282   extern unsigned struct_msqid_ds_sz;
    283   extern unsigned struct_mq_attr_sz;
    284   extern unsigned struct_timex_sz;
    285   extern unsigned struct_statvfs_sz;
    286 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    287 
    288   struct __sanitizer_iovec {
    289     void *iov_base;
    290     uptr iov_len;
    291   };
    292 
    293 #if !SANITIZER_ANDROID
    294   struct __sanitizer_ifaddrs {
    295     struct __sanitizer_ifaddrs *ifa_next;
    296     char *ifa_name;
    297     unsigned int ifa_flags;
    298     void *ifa_addr;    // (struct sockaddr *)
    299     void *ifa_netmask; // (struct sockaddr *)
    300     // This is a union on Linux.
    301 # ifdef ifa_dstaddr
    302 # undef ifa_dstaddr
    303 # endif
    304     void *ifa_dstaddr; // (struct sockaddr *)
    305     void *ifa_data;
    306   };
    307 #endif  // !SANITIZER_ANDROID
    308 
    309 #if SANITIZER_MAC
    310   typedef unsigned long __sanitizer_pthread_key_t;
    311 #else
    312   typedef unsigned __sanitizer_pthread_key_t;
    313 #endif
    314 
    315 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    316 
    317   struct __sanitizer_XDR {
    318     int x_op;
    319     void *x_ops;
    320     uptr x_public;
    321     uptr x_private;
    322     uptr x_base;
    323     unsigned x_handy;
    324   };
    325 
    326   const int __sanitizer_XDR_ENCODE = 0;
    327   const int __sanitizer_XDR_DECODE = 1;
    328   const int __sanitizer_XDR_FREE = 2;
    329 #endif
    330 
    331   struct __sanitizer_passwd {
    332     char *pw_name;
    333     char *pw_passwd;
    334     int pw_uid;
    335     int pw_gid;
    336 #if SANITIZER_MAC || SANITIZER_FREEBSD
    337     long pw_change;
    338     char *pw_class;
    339 #endif
    340 #if !(SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32))
    341     char *pw_gecos;
    342 #endif
    343     char *pw_dir;
    344     char *pw_shell;
    345 #if SANITIZER_MAC || SANITIZER_FREEBSD
    346     long pw_expire;
    347 #endif
    348 #if SANITIZER_FREEBSD
    349     int pw_fields;
    350 #endif
    351   };
    352 
    353   struct __sanitizer_group {
    354     char *gr_name;
    355     char *gr_passwd;
    356     int gr_gid;
    357     char **gr_mem;
    358   };
    359 
    360 #if defined(__x86_64__) && !defined(_LP64)
    361   typedef long long __sanitizer_time_t;
    362 #else
    363   typedef long __sanitizer_time_t;
    364 #endif
    365 
    366   struct __sanitizer_timeb {
    367     __sanitizer_time_t time;
    368     unsigned short millitm;
    369     short timezone;
    370     short dstflag;
    371   };
    372 
    373   struct __sanitizer_ether_addr {
    374     u8 octet[6];
    375   };
    376 
    377   struct __sanitizer_tm {
    378     int tm_sec;
    379     int tm_min;
    380     int tm_hour;
    381     int tm_mday;
    382     int tm_mon;
    383     int tm_year;
    384     int tm_wday;
    385     int tm_yday;
    386     int tm_isdst;
    387     long int tm_gmtoff;
    388     const char *tm_zone;
    389   };
    390 
    391 #if SANITIZER_LINUX
    392   struct __sanitizer_mntent {
    393     char *mnt_fsname;
    394     char *mnt_dir;
    395     char *mnt_type;
    396     char *mnt_opts;
    397     int mnt_freq;
    398     int mnt_passno;
    399   };
    400 #endif
    401 
    402 #if SANITIZER_MAC || SANITIZER_FREEBSD
    403   struct __sanitizer_msghdr {
    404     void *msg_name;
    405     unsigned msg_namelen;
    406     struct __sanitizer_iovec *msg_iov;
    407     unsigned msg_iovlen;
    408     void *msg_control;
    409     unsigned msg_controllen;
    410     int msg_flags;
    411   };
    412   struct __sanitizer_cmsghdr {
    413     unsigned cmsg_len;
    414     int cmsg_level;
    415     int cmsg_type;
    416   };
    417 #else
    418   struct __sanitizer_msghdr {
    419     void *msg_name;
    420     unsigned msg_namelen;
    421     struct __sanitizer_iovec *msg_iov;
    422     uptr msg_iovlen;
    423     void *msg_control;
    424     uptr msg_controllen;
    425     int msg_flags;
    426   };
    427   struct __sanitizer_cmsghdr {
    428     uptr cmsg_len;
    429     int cmsg_level;
    430     int cmsg_type;
    431   };
    432 #endif
    433 
    434 #if SANITIZER_MAC
    435   struct __sanitizer_dirent {
    436     unsigned long long d_ino;
    437     unsigned long long d_seekoff;
    438     unsigned short d_reclen;
    439     // more fields that we don't care about
    440   };
    441 #elif SANITIZER_FREEBSD
    442   struct __sanitizer_dirent {
    443     unsigned int d_fileno;
    444     unsigned short d_reclen;
    445     // more fields that we don't care about
    446   };
    447 #elif SANITIZER_ANDROID || defined(__x86_64__)
    448   struct __sanitizer_dirent {
    449     unsigned long long d_ino;
    450     unsigned long long d_off;
    451     unsigned short d_reclen;
    452     // more fields that we don't care about
    453   };
    454 #else
    455   struct __sanitizer_dirent {
    456     uptr d_ino;
    457     uptr d_off;
    458     unsigned short d_reclen;
    459     // more fields that we don't care about
    460   };
    461 #endif
    462 
    463 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    464   struct __sanitizer_dirent64 {
    465     unsigned long long d_ino;
    466     unsigned long long d_off;
    467     unsigned short d_reclen;
    468     // more fields that we don't care about
    469   };
    470 #endif
    471 
    472 // 'clock_t' is 32 bits wide on x64 FreeBSD
    473 #if SANITIZER_FREEBSD
    474   typedef int __sanitizer_clock_t;
    475 #elif defined(__x86_64__) && !defined(_LP64)
    476   typedef long long __sanitizer_clock_t;
    477 #else
    478   typedef long __sanitizer_clock_t;
    479 #endif
    480 
    481 #if SANITIZER_LINUX
    482   typedef int __sanitizer_clockid_t;
    483 #endif
    484 
    485 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    486 #if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__)\
    487                    || defined(__mips__)
    488   typedef unsigned __sanitizer___kernel_uid_t;
    489   typedef unsigned __sanitizer___kernel_gid_t;
    490 #else
    491   typedef unsigned short __sanitizer___kernel_uid_t;
    492   typedef unsigned short __sanitizer___kernel_gid_t;
    493 #endif
    494 #if defined(__x86_64__) && !defined(_LP64)
    495   typedef long long __sanitizer___kernel_off_t;
    496 #else
    497   typedef long __sanitizer___kernel_off_t;
    498 #endif
    499 
    500 #if defined(__powerpc__) || defined(__mips__)
    501   typedef unsigned int __sanitizer___kernel_old_uid_t;
    502   typedef unsigned int __sanitizer___kernel_old_gid_t;
    503 #else
    504   typedef unsigned short __sanitizer___kernel_old_uid_t;
    505   typedef unsigned short __sanitizer___kernel_old_gid_t;
    506 #endif
    507 
    508   typedef long long __sanitizer___kernel_loff_t;
    509   typedef struct {
    510     unsigned long fds_bits[1024 / (8 * sizeof(long))];
    511   } __sanitizer___kernel_fd_set;
    512 #endif
    513 
    514   // This thing depends on the platform. We are only interested in the upper
    515   // limit. Verified with a compiler assert in .cc.
    516   const int pthread_attr_t_max_sz = 128;
    517   union __sanitizer_pthread_attr_t {
    518     char size[pthread_attr_t_max_sz]; // NOLINT
    519     void *align;
    520   };
    521 
    522 #if SANITIZER_ANDROID
    523 # if SANITIZER_MIPS
    524   typedef unsigned long __sanitizer_sigset_t[16/sizeof(unsigned long)];
    525 # else
    526   typedef unsigned long __sanitizer_sigset_t;
    527 # endif
    528 #elif SANITIZER_MAC
    529   typedef unsigned __sanitizer_sigset_t;
    530 #elif SANITIZER_LINUX
    531   struct __sanitizer_sigset_t {
    532     // The size is determined by looking at sizeof of real sigset_t on linux.
    533     uptr val[128 / sizeof(uptr)];
    534   };
    535 #elif SANITIZER_FREEBSD
    536   struct __sanitizer_sigset_t {
    537      // uint32_t * 4
    538      unsigned int __bits[4];
    539   };
    540 #endif
    541 
    542   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
    543 #if SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 64)
    544   struct __sanitizer_sigaction {
    545     unsigned sa_flags;
    546     union {
    547       void (*sigaction)(int sig, void *siginfo, void *uctx);
    548       void (*handler)(int sig);
    549     };
    550     __sanitizer_sigset_t sa_mask;
    551     void (*sa_restorer)();
    552   };
    553 #elif SANITIZER_ANDROID && SANITIZER_MIPS32  // check this before WORDSIZE == 32
    554   struct __sanitizer_sigaction {
    555     unsigned sa_flags;
    556     union {
    557       void (*sigaction)(int sig, void *siginfo, void *uctx);
    558       void (*handler)(int sig);
    559     };
    560     __sanitizer_sigset_t sa_mask;
    561   };
    562 #elif SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32)
    563   struct __sanitizer_sigaction {
    564     union {
    565       void (*sigaction)(int sig, void *siginfo, void *uctx);
    566       void (*handler)(int sig);
    567     };
    568     __sanitizer_sigset_t sa_mask;
    569     uptr sa_flags;
    570     void (*sa_restorer)();
    571   };
    572 #else // !SANITIZER_ANDROID
    573   struct __sanitizer_sigaction {
    574 #if defined(__mips__) && !SANITIZER_FREEBSD
    575     unsigned int sa_flags;
    576 #endif
    577     union {
    578       void (*sigaction)(int sig, void *siginfo, void *uctx);
    579       void (*handler)(int sig);
    580     };
    581 #if SANITIZER_FREEBSD
    582     int sa_flags;
    583     __sanitizer_sigset_t sa_mask;
    584 #else
    585 #if defined(__s390x__)
    586     int sa_resv;
    587 #else
    588     __sanitizer_sigset_t sa_mask;
    589 #endif
    590 #ifndef __mips__
    591     int sa_flags;
    592 #endif
    593 #endif
    594 #if SANITIZER_LINUX
    595     void (*sa_restorer)();
    596 #endif
    597 #if defined(__mips__) && (SANITIZER_WORDSIZE == 32)
    598     int sa_resv[1];
    599 #endif
    600 #if defined(__s390x__)
    601     __sanitizer_sigset_t sa_mask;
    602 #endif
    603   };
    604 #endif // !SANITIZER_ANDROID
    605 
    606 #if SANITIZER_FREEBSD
    607   typedef __sanitizer_sigset_t __sanitizer_kernel_sigset_t;
    608 #elif defined(__mips__)
    609   struct __sanitizer_kernel_sigset_t {
    610     u8 sig[16];
    611   };
    612 #else
    613   struct __sanitizer_kernel_sigset_t {
    614     u8 sig[8];
    615   };
    616 #endif
    617 
    618   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
    619   struct __sanitizer_kernel_sigaction_t {
    620     union {
    621       void (*handler)(int signo);
    622       void (*sigaction)(int signo, void *info, void *ctx);
    623     };
    624     unsigned long sa_flags;
    625     void (*sa_restorer)(void);
    626     __sanitizer_kernel_sigset_t sa_mask;
    627   };
    628 
    629   extern uptr sig_ign;
    630   extern uptr sig_dfl;
    631   extern uptr sa_siginfo;
    632 
    633 #if SANITIZER_LINUX
    634   extern int e_tabsz;
    635 #endif
    636 
    637   extern int af_inet;
    638   extern int af_inet6;
    639   uptr __sanitizer_in_addr_sz(int af);
    640 
    641 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    642   struct __sanitizer_dl_phdr_info {
    643     uptr dlpi_addr;
    644     const char *dlpi_name;
    645     const void *dlpi_phdr;
    646     short dlpi_phnum;
    647   };
    648 
    649   extern unsigned struct_ElfW_Phdr_sz;
    650 #endif
    651 
    652   struct __sanitizer_addrinfo {
    653     int ai_flags;
    654     int ai_family;
    655     int ai_socktype;
    656     int ai_protocol;
    657 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD
    658     unsigned ai_addrlen;
    659     char *ai_canonname;
    660     void *ai_addr;
    661 #else // LINUX
    662     unsigned ai_addrlen;
    663     void *ai_addr;
    664     char *ai_canonname;
    665 #endif
    666     struct __sanitizer_addrinfo *ai_next;
    667   };
    668 
    669   struct __sanitizer_hostent {
    670     char *h_name;
    671     char **h_aliases;
    672     int h_addrtype;
    673     int h_length;
    674     char **h_addr_list;
    675   };
    676 
    677   struct __sanitizer_pollfd {
    678     int fd;
    679     short events;
    680     short revents;
    681   };
    682 
    683 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD
    684   typedef unsigned __sanitizer_nfds_t;
    685 #else
    686   typedef unsigned long __sanitizer_nfds_t;
    687 #endif
    688 
    689 #if !SANITIZER_ANDROID
    690 # if SANITIZER_LINUX
    691   struct __sanitizer_glob_t {
    692     uptr gl_pathc;
    693     char **gl_pathv;
    694     uptr gl_offs;
    695     int gl_flags;
    696 
    697     void (*gl_closedir)(void *dirp);
    698     void *(*gl_readdir)(void *dirp);
    699     void *(*gl_opendir)(const char *);
    700     int (*gl_lstat)(const char *, void *);
    701     int (*gl_stat)(const char *, void *);
    702   };
    703 # elif SANITIZER_FREEBSD
    704   struct __sanitizer_glob_t {
    705     uptr gl_pathc;
    706     uptr gl_matchc;
    707     uptr gl_offs;
    708     int gl_flags;
    709     char **gl_pathv;
    710     int (*gl_errfunc)(const char*, int);
    711     void (*gl_closedir)(void *dirp);
    712     struct dirent *(*gl_readdir)(void *dirp);
    713     void *(*gl_opendir)(const char*);
    714     int (*gl_lstat)(const char*, void* /* struct stat* */);
    715     int (*gl_stat)(const char*, void* /* struct stat* */);
    716   };
    717 # endif  // SANITIZER_FREEBSD
    718 
    719 # if SANITIZER_LINUX || SANITIZER_FREEBSD
    720   extern int glob_nomatch;
    721   extern int glob_altdirfunc;
    722 # endif
    723 #endif  // !SANITIZER_ANDROID
    724 
    725   extern unsigned path_max;
    726 
    727   struct __sanitizer_wordexp_t {
    728     uptr we_wordc;
    729     char **we_wordv;
    730     uptr we_offs;
    731 #if SANITIZER_FREEBSD
    732     char *we_strings;
    733     uptr we_nbytes;
    734 #endif
    735   };
    736 
    737 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    738   struct __sanitizer_FILE {
    739     int _flags;
    740     char *_IO_read_ptr;
    741     char *_IO_read_end;
    742     char *_IO_read_base;
    743     char *_IO_write_base;
    744     char *_IO_write_ptr;
    745     char *_IO_write_end;
    746     char *_IO_buf_base;
    747     char *_IO_buf_end;
    748     char *_IO_save_base;
    749     char *_IO_backup_base;
    750     char *_IO_save_end;
    751     void *_markers;
    752     __sanitizer_FILE *_chain;
    753     int _fileno;
    754   };
    755 # define SANITIZER_HAS_STRUCT_FILE 1
    756 #else
    757   typedef void __sanitizer_FILE;
    758 # define SANITIZER_HAS_STRUCT_FILE 0
    759 #endif
    760 
    761 #if SANITIZER_LINUX && !SANITIZER_ANDROID && \
    762   (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
    763     defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__) || \
    764     defined(__s390__))
    765   extern unsigned struct_user_regs_struct_sz;
    766   extern unsigned struct_user_fpregs_struct_sz;
    767   extern unsigned struct_user_fpxregs_struct_sz;
    768   extern unsigned struct_user_vfpregs_struct_sz;
    769 
    770   extern int ptrace_peektext;
    771   extern int ptrace_peekdata;
    772   extern int ptrace_peekuser;
    773   extern int ptrace_getregs;
    774   extern int ptrace_setregs;
    775   extern int ptrace_getfpregs;
    776   extern int ptrace_setfpregs;
    777   extern int ptrace_getfpxregs;
    778   extern int ptrace_setfpxregs;
    779   extern int ptrace_getvfpregs;
    780   extern int ptrace_setvfpregs;
    781   extern int ptrace_getsiginfo;
    782   extern int ptrace_setsiginfo;
    783   extern int ptrace_getregset;
    784   extern int ptrace_setregset;
    785   extern int ptrace_geteventmsg;
    786 #endif
    787 
    788 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    789   extern unsigned struct_shminfo_sz;
    790   extern unsigned struct_shm_info_sz;
    791   extern int shmctl_ipc_stat;
    792   extern int shmctl_ipc_info;
    793   extern int shmctl_shm_info;
    794   extern int shmctl_shm_stat;
    795 #endif
    796 
    797   extern int map_fixed;
    798 
    799   // ioctl arguments
    800   struct __sanitizer_ifconf {
    801     int ifc_len;
    802     union {
    803       void *ifcu_req;
    804     } ifc_ifcu;
    805 #if SANITIZER_MAC
    806   } __attribute__((packed));
    807 #else
    808   };
    809 #endif
    810 
    811 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    812 struct __sanitizer__obstack_chunk {
    813   char *limit;
    814   struct __sanitizer__obstack_chunk *prev;
    815 };
    816 
    817 struct __sanitizer_obstack {
    818   long chunk_size;
    819   struct __sanitizer__obstack_chunk *chunk;
    820   char *object_base;
    821   char *next_free;
    822   uptr more_fields[7];
    823 };
    824 
    825 typedef uptr (*__sanitizer_cookie_io_read)(void *cookie, char *buf, uptr size);
    826 typedef uptr (*__sanitizer_cookie_io_write)(void *cookie, const char *buf,
    827                                             uptr size);
    828 typedef int (*__sanitizer_cookie_io_seek)(void *cookie, u64 *offset,
    829                                           int whence);
    830 typedef int (*__sanitizer_cookie_io_close)(void *cookie);
    831 
    832 struct __sanitizer_cookie_io_functions_t {
    833   __sanitizer_cookie_io_read read;
    834   __sanitizer_cookie_io_write write;
    835   __sanitizer_cookie_io_seek seek;
    836   __sanitizer_cookie_io_close close;
    837 };
    838 #endif
    839 
    840 #define IOC_NRBITS 8
    841 #define IOC_TYPEBITS 8
    842 #if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__)
    843 #define IOC_SIZEBITS 13
    844 #define IOC_DIRBITS 3
    845 #define IOC_NONE 1U
    846 #define IOC_WRITE 4U
    847 #define IOC_READ 2U
    848 #else
    849 #define IOC_SIZEBITS 14
    850 #define IOC_DIRBITS 2
    851 #define IOC_NONE 0U
    852 #define IOC_WRITE 1U
    853 #define IOC_READ 2U
    854 #endif
    855 #define IOC_NRMASK ((1 << IOC_NRBITS) - 1)
    856 #define IOC_TYPEMASK ((1 << IOC_TYPEBITS) - 1)
    857 #define IOC_SIZEMASK ((1 << IOC_SIZEBITS) - 1)
    858 #if defined(IOC_DIRMASK)
    859 #undef IOC_DIRMASK
    860 #endif
    861 #define IOC_DIRMASK ((1 << IOC_DIRBITS) - 1)
    862 #define IOC_NRSHIFT 0
    863 #define IOC_TYPESHIFT (IOC_NRSHIFT + IOC_NRBITS)
    864 #define IOC_SIZESHIFT (IOC_TYPESHIFT + IOC_TYPEBITS)
    865 #define IOC_DIRSHIFT (IOC_SIZESHIFT + IOC_SIZEBITS)
    866 #define EVIOC_EV_MAX 0x1f
    867 #define EVIOC_ABS_MAX 0x3f
    868 
    869 #define IOC_DIR(nr) (((nr) >> IOC_DIRSHIFT) & IOC_DIRMASK)
    870 #define IOC_TYPE(nr) (((nr) >> IOC_TYPESHIFT) & IOC_TYPEMASK)
    871 #define IOC_NR(nr) (((nr) >> IOC_NRSHIFT) & IOC_NRMASK)
    872 #define IOC_SIZE(nr) (((nr) >> IOC_SIZESHIFT) & IOC_SIZEMASK)
    873 
    874   extern unsigned struct_ifreq_sz;
    875   extern unsigned struct_termios_sz;
    876   extern unsigned struct_winsize_sz;
    877 
    878 #if SANITIZER_LINUX
    879   extern unsigned struct_arpreq_sz;
    880   extern unsigned struct_cdrom_msf_sz;
    881   extern unsigned struct_cdrom_multisession_sz;
    882   extern unsigned struct_cdrom_read_audio_sz;
    883   extern unsigned struct_cdrom_subchnl_sz;
    884   extern unsigned struct_cdrom_ti_sz;
    885   extern unsigned struct_cdrom_tocentry_sz;
    886   extern unsigned struct_cdrom_tochdr_sz;
    887   extern unsigned struct_cdrom_volctrl_sz;
    888   extern unsigned struct_ff_effect_sz;
    889   extern unsigned struct_floppy_drive_params_sz;
    890   extern unsigned struct_floppy_drive_struct_sz;
    891   extern unsigned struct_floppy_fdc_state_sz;
    892   extern unsigned struct_floppy_max_errors_sz;
    893   extern unsigned struct_floppy_raw_cmd_sz;
    894   extern unsigned struct_floppy_struct_sz;
    895   extern unsigned struct_floppy_write_errors_sz;
    896   extern unsigned struct_format_descr_sz;
    897   extern unsigned struct_hd_driveid_sz;
    898   extern unsigned struct_hd_geometry_sz;
    899   extern unsigned struct_input_absinfo_sz;
    900   extern unsigned struct_input_id_sz;
    901   extern unsigned struct_mtpos_sz;
    902   extern unsigned struct_termio_sz;
    903   extern unsigned struct_vt_consize_sz;
    904   extern unsigned struct_vt_sizes_sz;
    905   extern unsigned struct_vt_stat_sz;
    906 #endif  // SANITIZER_LINUX
    907 
    908 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    909   extern unsigned struct_copr_buffer_sz;
    910   extern unsigned struct_copr_debug_buf_sz;
    911   extern unsigned struct_copr_msg_sz;
    912   extern unsigned struct_midi_info_sz;
    913   extern unsigned struct_mtget_sz;
    914   extern unsigned struct_mtop_sz;
    915   extern unsigned struct_rtentry_sz;
    916   extern unsigned struct_sbi_instrument_sz;
    917   extern unsigned struct_seq_event_rec_sz;
    918   extern unsigned struct_synth_info_sz;
    919   extern unsigned struct_vt_mode_sz;
    920 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    921 
    922 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    923   extern unsigned struct_ax25_parms_struct_sz;
    924   extern unsigned struct_cyclades_monitor_sz;
    925   extern unsigned struct_input_keymap_entry_sz;
    926   extern unsigned struct_ipx_config_data_sz;
    927   extern unsigned struct_kbdiacrs_sz;
    928   extern unsigned struct_kbentry_sz;
    929   extern unsigned struct_kbkeycode_sz;
    930   extern unsigned struct_kbsentry_sz;
    931   extern unsigned struct_mtconfiginfo_sz;
    932   extern unsigned struct_nr_parms_struct_sz;
    933   extern unsigned struct_scc_modem_sz;
    934   extern unsigned struct_scc_stat_sz;
    935   extern unsigned struct_serial_multiport_struct_sz;
    936   extern unsigned struct_serial_struct_sz;
    937   extern unsigned struct_sockaddr_ax25_sz;
    938   extern unsigned struct_unimapdesc_sz;
    939   extern unsigned struct_unimapinit_sz;
    940 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
    941 
    942 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    943   extern unsigned struct_audio_buf_info_sz;
    944   extern unsigned struct_ppp_stats_sz;
    945 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    946 
    947 #if !SANITIZER_ANDROID && !SANITIZER_MAC
    948   extern unsigned struct_sioc_sg_req_sz;
    949   extern unsigned struct_sioc_vif_req_sz;
    950 #endif
    951 
    952   // ioctl request identifiers
    953 
    954   // A special value to mark ioctls that are not present on the target platform,
    955   // when it can not be determined without including any system headers.
    956   extern const unsigned IOCTL_NOT_PRESENT;
    957 
    958   extern unsigned IOCTL_FIOASYNC;
    959   extern unsigned IOCTL_FIOCLEX;
    960   extern unsigned IOCTL_FIOGETOWN;
    961   extern unsigned IOCTL_FIONBIO;
    962   extern unsigned IOCTL_FIONCLEX;
    963   extern unsigned IOCTL_FIOSETOWN;
    964   extern unsigned IOCTL_SIOCADDMULTI;
    965   extern unsigned IOCTL_SIOCATMARK;
    966   extern unsigned IOCTL_SIOCDELMULTI;
    967   extern unsigned IOCTL_SIOCGIFADDR;
    968   extern unsigned IOCTL_SIOCGIFBRDADDR;
    969   extern unsigned IOCTL_SIOCGIFCONF;
    970   extern unsigned IOCTL_SIOCGIFDSTADDR;
    971   extern unsigned IOCTL_SIOCGIFFLAGS;
    972   extern unsigned IOCTL_SIOCGIFMETRIC;
    973   extern unsigned IOCTL_SIOCGIFMTU;
    974   extern unsigned IOCTL_SIOCGIFNETMASK;
    975   extern unsigned IOCTL_SIOCGPGRP;
    976   extern unsigned IOCTL_SIOCSIFADDR;
    977   extern unsigned IOCTL_SIOCSIFBRDADDR;
    978   extern unsigned IOCTL_SIOCSIFDSTADDR;
    979   extern unsigned IOCTL_SIOCSIFFLAGS;
    980   extern unsigned IOCTL_SIOCSIFMETRIC;
    981   extern unsigned IOCTL_SIOCSIFMTU;
    982   extern unsigned IOCTL_SIOCSIFNETMASK;
    983   extern unsigned IOCTL_SIOCSPGRP;
    984   extern unsigned IOCTL_TIOCCONS;
    985   extern unsigned IOCTL_TIOCEXCL;
    986   extern unsigned IOCTL_TIOCGETD;
    987   extern unsigned IOCTL_TIOCGPGRP;
    988   extern unsigned IOCTL_TIOCGWINSZ;
    989   extern unsigned IOCTL_TIOCMBIC;
    990   extern unsigned IOCTL_TIOCMBIS;
    991   extern unsigned IOCTL_TIOCMGET;
    992   extern unsigned IOCTL_TIOCMSET;
    993   extern unsigned IOCTL_TIOCNOTTY;
    994   extern unsigned IOCTL_TIOCNXCL;
    995   extern unsigned IOCTL_TIOCOUTQ;
    996   extern unsigned IOCTL_TIOCPKT;
    997   extern unsigned IOCTL_TIOCSCTTY;
    998   extern unsigned IOCTL_TIOCSETD;
    999   extern unsigned IOCTL_TIOCSPGRP;
   1000   extern unsigned IOCTL_TIOCSTI;
   1001   extern unsigned IOCTL_TIOCSWINSZ;
   1002 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
   1003   extern unsigned IOCTL_SIOCGETSGCNT;
   1004   extern unsigned IOCTL_SIOCGETVIFCNT;
   1005 #endif
   1006 #if SANITIZER_LINUX
   1007   extern unsigned IOCTL_EVIOCGABS;
   1008   extern unsigned IOCTL_EVIOCGBIT;
   1009   extern unsigned IOCTL_EVIOCGEFFECTS;
   1010   extern unsigned IOCTL_EVIOCGID;
   1011   extern unsigned IOCTL_EVIOCGKEY;
   1012   extern unsigned IOCTL_EVIOCGKEYCODE;
   1013   extern unsigned IOCTL_EVIOCGLED;
   1014   extern unsigned IOCTL_EVIOCGNAME;
   1015   extern unsigned IOCTL_EVIOCGPHYS;
   1016   extern unsigned IOCTL_EVIOCGRAB;
   1017   extern unsigned IOCTL_EVIOCGREP;
   1018   extern unsigned IOCTL_EVIOCGSND;
   1019   extern unsigned IOCTL_EVIOCGSW;
   1020   extern unsigned IOCTL_EVIOCGUNIQ;
   1021   extern unsigned IOCTL_EVIOCGVERSION;
   1022   extern unsigned IOCTL_EVIOCRMFF;
   1023   extern unsigned IOCTL_EVIOCSABS;
   1024   extern unsigned IOCTL_EVIOCSFF;
   1025   extern unsigned IOCTL_EVIOCSKEYCODE;
   1026   extern unsigned IOCTL_EVIOCSREP;
   1027   extern unsigned IOCTL_BLKFLSBUF;
   1028   extern unsigned IOCTL_BLKGETSIZE;
   1029   extern unsigned IOCTL_BLKRAGET;
   1030   extern unsigned IOCTL_BLKRASET;
   1031   extern unsigned IOCTL_BLKROGET;
   1032   extern unsigned IOCTL_BLKROSET;
   1033   extern unsigned IOCTL_BLKRRPART;
   1034   extern unsigned IOCTL_CDROMAUDIOBUFSIZ;
   1035   extern unsigned IOCTL_CDROMEJECT;
   1036   extern unsigned IOCTL_CDROMEJECT_SW;
   1037   extern unsigned IOCTL_CDROMMULTISESSION;
   1038   extern unsigned IOCTL_CDROMPAUSE;
   1039   extern unsigned IOCTL_CDROMPLAYMSF;
   1040   extern unsigned IOCTL_CDROMPLAYTRKIND;
   1041   extern unsigned IOCTL_CDROMREADAUDIO;
   1042   extern unsigned IOCTL_CDROMREADCOOKED;
   1043   extern unsigned IOCTL_CDROMREADMODE1;
   1044   extern unsigned IOCTL_CDROMREADMODE2;
   1045   extern unsigned IOCTL_CDROMREADRAW;
   1046   extern unsigned IOCTL_CDROMREADTOCENTRY;
   1047   extern unsigned IOCTL_CDROMREADTOCHDR;
   1048   extern unsigned IOCTL_CDROMRESET;
   1049   extern unsigned IOCTL_CDROMRESUME;
   1050   extern unsigned IOCTL_CDROMSEEK;
   1051   extern unsigned IOCTL_CDROMSTART;
   1052   extern unsigned IOCTL_CDROMSTOP;
   1053   extern unsigned IOCTL_CDROMSUBCHNL;
   1054   extern unsigned IOCTL_CDROMVOLCTRL;
   1055   extern unsigned IOCTL_CDROMVOLREAD;
   1056   extern unsigned IOCTL_CDROM_GET_UPC;
   1057   extern unsigned IOCTL_FDCLRPRM;
   1058   extern unsigned IOCTL_FDDEFPRM;
   1059   extern unsigned IOCTL_FDFLUSH;
   1060   extern unsigned IOCTL_FDFMTBEG;
   1061   extern unsigned IOCTL_FDFMTEND;
   1062   extern unsigned IOCTL_FDFMTTRK;
   1063   extern unsigned IOCTL_FDGETDRVPRM;
   1064   extern unsigned IOCTL_FDGETDRVSTAT;
   1065   extern unsigned IOCTL_FDGETDRVTYP;
   1066   extern unsigned IOCTL_FDGETFDCSTAT;
   1067   extern unsigned IOCTL_FDGETMAXERRS;
   1068   extern unsigned IOCTL_FDGETPRM;
   1069   extern unsigned IOCTL_FDMSGOFF;
   1070   extern unsigned IOCTL_FDMSGON;
   1071   extern unsigned IOCTL_FDPOLLDRVSTAT;
   1072   extern unsigned IOCTL_FDRAWCMD;
   1073   extern unsigned IOCTL_FDRESET;
   1074   extern unsigned IOCTL_FDSETDRVPRM;
   1075   extern unsigned IOCTL_FDSETEMSGTRESH;
   1076   extern unsigned IOCTL_FDSETMAXERRS;
   1077   extern unsigned IOCTL_FDSETPRM;
   1078   extern unsigned IOCTL_FDTWADDLE;
   1079   extern unsigned IOCTL_FDWERRORCLR;
   1080   extern unsigned IOCTL_FDWERRORGET;
   1081   extern unsigned IOCTL_HDIO_DRIVE_CMD;
   1082   extern unsigned IOCTL_HDIO_GETGEO;
   1083   extern unsigned IOCTL_HDIO_GET_32BIT;
   1084   extern unsigned IOCTL_HDIO_GET_DMA;
   1085   extern unsigned IOCTL_HDIO_GET_IDENTITY;
   1086   extern unsigned IOCTL_HDIO_GET_KEEPSETTINGS;
   1087   extern unsigned IOCTL_HDIO_GET_MULTCOUNT;
   1088   extern unsigned IOCTL_HDIO_GET_NOWERR;
   1089   extern unsigned IOCTL_HDIO_GET_UNMASKINTR;
   1090   extern unsigned IOCTL_HDIO_SET_32BIT;
   1091   extern unsigned IOCTL_HDIO_SET_DMA;
   1092   extern unsigned IOCTL_HDIO_SET_KEEPSETTINGS;
   1093   extern unsigned IOCTL_HDIO_SET_MULTCOUNT;
   1094   extern unsigned IOCTL_HDIO_SET_NOWERR;
   1095   extern unsigned IOCTL_HDIO_SET_UNMASKINTR;
   1096   extern unsigned IOCTL_MTIOCPOS;
   1097   extern unsigned IOCTL_PPPIOCGASYNCMAP;
   1098   extern unsigned IOCTL_PPPIOCGDEBUG;
   1099   extern unsigned IOCTL_PPPIOCGFLAGS;
   1100   extern unsigned IOCTL_PPPIOCGUNIT;
   1101   extern unsigned IOCTL_PPPIOCGXASYNCMAP;
   1102   extern unsigned IOCTL_PPPIOCSASYNCMAP;
   1103   extern unsigned IOCTL_PPPIOCSDEBUG;
   1104   extern unsigned IOCTL_PPPIOCSFLAGS;
   1105   extern unsigned IOCTL_PPPIOCSMAXCID;
   1106   extern unsigned IOCTL_PPPIOCSMRU;
   1107   extern unsigned IOCTL_PPPIOCSXASYNCMAP;
   1108   extern unsigned IOCTL_SIOCDARP;
   1109   extern unsigned IOCTL_SIOCDRARP;
   1110   extern unsigned IOCTL_SIOCGARP;
   1111   extern unsigned IOCTL_SIOCGIFENCAP;
   1112   extern unsigned IOCTL_SIOCGIFHWADDR;
   1113   extern unsigned IOCTL_SIOCGIFMAP;
   1114   extern unsigned IOCTL_SIOCGIFMEM;
   1115   extern unsigned IOCTL_SIOCGIFNAME;
   1116   extern unsigned IOCTL_SIOCGIFSLAVE;
   1117   extern unsigned IOCTL_SIOCGRARP;
   1118   extern unsigned IOCTL_SIOCGSTAMP;
   1119   extern unsigned IOCTL_SIOCSARP;
   1120   extern unsigned IOCTL_SIOCSIFENCAP;
   1121   extern unsigned IOCTL_SIOCSIFHWADDR;
   1122   extern unsigned IOCTL_SIOCSIFLINK;
   1123   extern unsigned IOCTL_SIOCSIFMAP;
   1124   extern unsigned IOCTL_SIOCSIFMEM;
   1125   extern unsigned IOCTL_SIOCSIFSLAVE;
   1126   extern unsigned IOCTL_SIOCSRARP;
   1127   extern unsigned IOCTL_SNDCTL_COPR_HALT;
   1128   extern unsigned IOCTL_SNDCTL_COPR_LOAD;
   1129   extern unsigned IOCTL_SNDCTL_COPR_RCODE;
   1130   extern unsigned IOCTL_SNDCTL_COPR_RCVMSG;
   1131   extern unsigned IOCTL_SNDCTL_COPR_RDATA;
   1132   extern unsigned IOCTL_SNDCTL_COPR_RESET;
   1133   extern unsigned IOCTL_SNDCTL_COPR_RUN;
   1134   extern unsigned IOCTL_SNDCTL_COPR_SENDMSG;
   1135   extern unsigned IOCTL_SNDCTL_COPR_WCODE;
   1136   extern unsigned IOCTL_SNDCTL_COPR_WDATA;
   1137   extern unsigned IOCTL_TCFLSH;
   1138   extern unsigned IOCTL_TCGETA;
   1139   extern unsigned IOCTL_TCGETS;
   1140   extern unsigned IOCTL_TCSBRK;
   1141   extern unsigned IOCTL_TCSBRKP;
   1142   extern unsigned IOCTL_TCSETA;
   1143   extern unsigned IOCTL_TCSETAF;
   1144   extern unsigned IOCTL_TCSETAW;
   1145   extern unsigned IOCTL_TCSETS;
   1146   extern unsigned IOCTL_TCSETSF;
   1147   extern unsigned IOCTL_TCSETSW;
   1148   extern unsigned IOCTL_TCXONC;
   1149   extern unsigned IOCTL_TIOCGLCKTRMIOS;
   1150   extern unsigned IOCTL_TIOCGSOFTCAR;
   1151   extern unsigned IOCTL_TIOCINQ;
   1152   extern unsigned IOCTL_TIOCLINUX;
   1153   extern unsigned IOCTL_TIOCSERCONFIG;
   1154   extern unsigned IOCTL_TIOCSERGETLSR;
   1155   extern unsigned IOCTL_TIOCSERGWILD;
   1156   extern unsigned IOCTL_TIOCSERSWILD;
   1157   extern unsigned IOCTL_TIOCSLCKTRMIOS;
   1158   extern unsigned IOCTL_TIOCSSOFTCAR;
   1159   extern unsigned IOCTL_VT_DISALLOCATE;
   1160   extern unsigned IOCTL_VT_GETSTATE;
   1161   extern unsigned IOCTL_VT_RESIZE;
   1162   extern unsigned IOCTL_VT_RESIZEX;
   1163   extern unsigned IOCTL_VT_SENDSIG;
   1164 #endif  // SANITIZER_LINUX
   1165 #if SANITIZER_LINUX || SANITIZER_FREEBSD
   1166   extern unsigned IOCTL_MTIOCGET;
   1167   extern unsigned IOCTL_MTIOCTOP;
   1168   extern unsigned IOCTL_SIOCADDRT;
   1169   extern unsigned IOCTL_SIOCDELRT;
   1170   extern unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE;
   1171   extern unsigned IOCTL_SNDCTL_DSP_GETFMTS;
   1172   extern unsigned IOCTL_SNDCTL_DSP_NONBLOCK;
   1173   extern unsigned IOCTL_SNDCTL_DSP_POST;
   1174   extern unsigned IOCTL_SNDCTL_DSP_RESET;
   1175   extern unsigned IOCTL_SNDCTL_DSP_SETFMT;
   1176   extern unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT;
   1177   extern unsigned IOCTL_SNDCTL_DSP_SPEED;
   1178   extern unsigned IOCTL_SNDCTL_DSP_STEREO;
   1179   extern unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE;
   1180   extern unsigned IOCTL_SNDCTL_DSP_SYNC;
   1181   extern unsigned IOCTL_SNDCTL_FM_4OP_ENABLE;
   1182   extern unsigned IOCTL_SNDCTL_FM_LOAD_INSTR;
   1183   extern unsigned IOCTL_SNDCTL_MIDI_INFO;
   1184   extern unsigned IOCTL_SNDCTL_MIDI_PRETIME;
   1185   extern unsigned IOCTL_SNDCTL_SEQ_CTRLRATE;
   1186   extern unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT;
   1187   extern unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT;
   1188   extern unsigned IOCTL_SNDCTL_SEQ_NRMIDIS;
   1189   extern unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS;
   1190   extern unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND;
   1191   extern unsigned IOCTL_SNDCTL_SEQ_PANIC;
   1192   extern unsigned IOCTL_SNDCTL_SEQ_PERCMODE;
   1193   extern unsigned IOCTL_SNDCTL_SEQ_RESET;
   1194   extern unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES;
   1195   extern unsigned IOCTL_SNDCTL_SEQ_SYNC;
   1196   extern unsigned IOCTL_SNDCTL_SEQ_TESTMIDI;
   1197   extern unsigned IOCTL_SNDCTL_SEQ_THRESHOLD;
   1198   extern unsigned IOCTL_SNDCTL_SYNTH_INFO;
   1199   extern unsigned IOCTL_SNDCTL_SYNTH_MEMAVL;
   1200   extern unsigned IOCTL_SNDCTL_TMR_CONTINUE;
   1201   extern unsigned IOCTL_SNDCTL_TMR_METRONOME;
   1202   extern unsigned IOCTL_SNDCTL_TMR_SELECT;
   1203   extern unsigned IOCTL_SNDCTL_TMR_SOURCE;
   1204   extern unsigned IOCTL_SNDCTL_TMR_START;
   1205   extern unsigned IOCTL_SNDCTL_TMR_STOP;
   1206   extern unsigned IOCTL_SNDCTL_TMR_TEMPO;
   1207   extern unsigned IOCTL_SNDCTL_TMR_TIMEBASE;
   1208   extern unsigned IOCTL_SOUND_MIXER_READ_ALTPCM;
   1209   extern unsigned IOCTL_SOUND_MIXER_READ_BASS;
   1210   extern unsigned IOCTL_SOUND_MIXER_READ_CAPS;
   1211   extern unsigned IOCTL_SOUND_MIXER_READ_CD;
   1212   extern unsigned IOCTL_SOUND_MIXER_READ_DEVMASK;
   1213   extern unsigned IOCTL_SOUND_MIXER_READ_ENHANCE;
   1214   extern unsigned IOCTL_SOUND_MIXER_READ_IGAIN;
   1215   extern unsigned IOCTL_SOUND_MIXER_READ_IMIX;
   1216   extern unsigned IOCTL_SOUND_MIXER_READ_LINE1;
   1217   extern unsigned IOCTL_SOUND_MIXER_READ_LINE2;
   1218   extern unsigned IOCTL_SOUND_MIXER_READ_LINE3;
   1219   extern unsigned IOCTL_SOUND_MIXER_READ_LINE;
   1220   extern unsigned IOCTL_SOUND_MIXER_READ_LOUD;
   1221   extern unsigned IOCTL_SOUND_MIXER_READ_MIC;
   1222   extern unsigned IOCTL_SOUND_MIXER_READ_MUTE;
   1223   extern unsigned IOCTL_SOUND_MIXER_READ_OGAIN;
   1224   extern unsigned IOCTL_SOUND_MIXER_READ_PCM;
   1225   extern unsigned IOCTL_SOUND_MIXER_READ_RECLEV;
   1226   extern unsigned IOCTL_SOUND_MIXER_READ_RECMASK;
   1227   extern unsigned IOCTL_SOUND_MIXER_READ_RECSRC;
   1228   extern unsigned IOCTL_SOUND_MIXER_READ_SPEAKER;
   1229   extern unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS;
   1230   extern unsigned IOCTL_SOUND_MIXER_READ_SYNTH;
   1231   extern unsigned IOCTL_SOUND_MIXER_READ_TREBLE;
   1232   extern unsigned IOCTL_SOUND_MIXER_READ_VOLUME;
   1233   extern unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM;
   1234   extern unsigned IOCTL_SOUND_MIXER_WRITE_BASS;
   1235   extern unsigned IOCTL_SOUND_MIXER_WRITE_CD;
   1236   extern unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE;
   1237   extern unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN;
   1238   extern unsigned IOCTL_SOUND_MIXER_WRITE_IMIX;
   1239   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE1;
   1240   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE2;
   1241   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE3;
   1242   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE;
   1243   extern unsigned IOCTL_SOUND_MIXER_WRITE_LOUD;
   1244   extern unsigned IOCTL_SOUND_MIXER_WRITE_MIC;
   1245   extern unsigned IOCTL_SOUND_MIXER_WRITE_MUTE;
   1246   extern unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN;
   1247   extern unsigned IOCTL_SOUND_MIXER_WRITE_PCM;
   1248   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV;
   1249   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC;
   1250   extern unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER;
   1251   extern unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH;
   1252   extern unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE;
   1253   extern unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME;
   1254   extern unsigned IOCTL_SOUND_PCM_READ_BITS;
   1255   extern unsigned IOCTL_SOUND_PCM_READ_CHANNELS;
   1256   extern unsigned IOCTL_SOUND_PCM_READ_FILTER;
   1257   extern unsigned IOCTL_SOUND_PCM_READ_RATE;
   1258   extern unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS;
   1259   extern unsigned IOCTL_SOUND_PCM_WRITE_FILTER;
   1260   extern unsigned IOCTL_VT_ACTIVATE;
   1261   extern unsigned IOCTL_VT_GETMODE;
   1262   extern unsigned IOCTL_VT_OPENQRY;
   1263   extern unsigned IOCTL_VT_RELDISP;
   1264   extern unsigned IOCTL_VT_SETMODE;
   1265   extern unsigned IOCTL_VT_WAITACTIVE;
   1266 #endif  // SANITIZER_LINUX || SANITIZER_FREEBSD
   1267 
   1268 #if SANITIZER_LINUX && !SANITIZER_ANDROID
   1269   extern unsigned IOCTL_CYGETDEFTHRESH;
   1270   extern unsigned IOCTL_CYGETDEFTIMEOUT;
   1271   extern unsigned IOCTL_CYGETMON;
   1272   extern unsigned IOCTL_CYGETTHRESH;
   1273   extern unsigned IOCTL_CYGETTIMEOUT;
   1274   extern unsigned IOCTL_CYSETDEFTHRESH;
   1275   extern unsigned IOCTL_CYSETDEFTIMEOUT;
   1276   extern unsigned IOCTL_CYSETTHRESH;
   1277   extern unsigned IOCTL_CYSETTIMEOUT;
   1278   extern unsigned IOCTL_EQL_EMANCIPATE;
   1279   extern unsigned IOCTL_EQL_ENSLAVE;
   1280   extern unsigned IOCTL_EQL_GETMASTRCFG;
   1281   extern unsigned IOCTL_EQL_GETSLAVECFG;
   1282   extern unsigned IOCTL_EQL_SETMASTRCFG;
   1283   extern unsigned IOCTL_EQL_SETSLAVECFG;
   1284   extern unsigned IOCTL_EVIOCGKEYCODE_V2;
   1285   extern unsigned IOCTL_EVIOCGPROP;
   1286   extern unsigned IOCTL_EVIOCSKEYCODE_V2;
   1287   extern unsigned IOCTL_FS_IOC_GETFLAGS;
   1288   extern unsigned IOCTL_FS_IOC_GETVERSION;
   1289   extern unsigned IOCTL_FS_IOC_SETFLAGS;
   1290   extern unsigned IOCTL_FS_IOC_SETVERSION;
   1291   extern unsigned IOCTL_GIO_CMAP;
   1292   extern unsigned IOCTL_GIO_FONT;
   1293   extern unsigned IOCTL_GIO_UNIMAP;
   1294   extern unsigned IOCTL_GIO_UNISCRNMAP;
   1295   extern unsigned IOCTL_KDADDIO;
   1296   extern unsigned IOCTL_KDDELIO;
   1297   extern unsigned IOCTL_KDGETKEYCODE;
   1298   extern unsigned IOCTL_KDGKBDIACR;
   1299   extern unsigned IOCTL_KDGKBENT;
   1300   extern unsigned IOCTL_KDGKBLED;
   1301   extern unsigned IOCTL_KDGKBMETA;
   1302   extern unsigned IOCTL_KDGKBSENT;
   1303   extern unsigned IOCTL_KDMAPDISP;
   1304   extern unsigned IOCTL_KDSETKEYCODE;
   1305   extern unsigned IOCTL_KDSIGACCEPT;
   1306   extern unsigned IOCTL_KDSKBDIACR;
   1307   extern unsigned IOCTL_KDSKBENT;
   1308   extern unsigned IOCTL_KDSKBLED;
   1309   extern unsigned IOCTL_KDSKBMETA;
   1310   extern unsigned IOCTL_KDSKBSENT;
   1311   extern unsigned IOCTL_KDUNMAPDISP;
   1312   extern unsigned IOCTL_LPABORT;
   1313   extern unsigned IOCTL_LPABORTOPEN;
   1314   extern unsigned IOCTL_LPCAREFUL;
   1315   extern unsigned IOCTL_LPCHAR;
   1316   extern unsigned IOCTL_LPGETIRQ;
   1317   extern unsigned IOCTL_LPGETSTATUS;
   1318   extern unsigned IOCTL_LPRESET;
   1319   extern unsigned IOCTL_LPSETIRQ;
   1320   extern unsigned IOCTL_LPTIME;
   1321   extern unsigned IOCTL_LPWAIT;
   1322   extern unsigned IOCTL_MTIOCGETCONFIG;
   1323   extern unsigned IOCTL_MTIOCSETCONFIG;
   1324   extern unsigned IOCTL_PIO_CMAP;
   1325   extern unsigned IOCTL_PIO_FONT;
   1326   extern unsigned IOCTL_PIO_UNIMAP;
   1327   extern unsigned IOCTL_PIO_UNIMAPCLR;
   1328   extern unsigned IOCTL_PIO_UNISCRNMAP;
   1329   extern unsigned IOCTL_SCSI_IOCTL_GET_IDLUN;
   1330   extern unsigned IOCTL_SCSI_IOCTL_PROBE_HOST;
   1331   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE;
   1332   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE;
   1333   extern unsigned IOCTL_SIOCAIPXITFCRT;
   1334   extern unsigned IOCTL_SIOCAIPXPRISLT;
   1335   extern unsigned IOCTL_SIOCAX25ADDUID;
   1336   extern unsigned IOCTL_SIOCAX25DELUID;
   1337   extern unsigned IOCTL_SIOCAX25GETPARMS;
   1338   extern unsigned IOCTL_SIOCAX25GETUID;
   1339   extern unsigned IOCTL_SIOCAX25NOUID;
   1340   extern unsigned IOCTL_SIOCAX25SETPARMS;
   1341   extern unsigned IOCTL_SIOCDEVPLIP;
   1342   extern unsigned IOCTL_SIOCIPXCFGDATA;
   1343   extern unsigned IOCTL_SIOCNRDECOBS;
   1344   extern unsigned IOCTL_SIOCNRGETPARMS;
   1345   extern unsigned IOCTL_SIOCNRRTCTL;
   1346   extern unsigned IOCTL_SIOCNRSETPARMS;
   1347   extern unsigned IOCTL_SNDCTL_DSP_GETISPACE;
   1348   extern unsigned IOCTL_SNDCTL_DSP_GETOSPACE;
   1349   extern unsigned IOCTL_TIOCGSERIAL;
   1350   extern unsigned IOCTL_TIOCSERGETMULTI;
   1351   extern unsigned IOCTL_TIOCSERSETMULTI;
   1352   extern unsigned IOCTL_TIOCSSERIAL;
   1353 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
   1354 
   1355 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
   1356   extern unsigned IOCTL_GIO_SCRNMAP;
   1357   extern unsigned IOCTL_KDDISABIO;
   1358   extern unsigned IOCTL_KDENABIO;
   1359   extern unsigned IOCTL_KDGETLED;
   1360   extern unsigned IOCTL_KDGETMODE;
   1361   extern unsigned IOCTL_KDGKBMODE;
   1362   extern unsigned IOCTL_KDGKBTYPE;
   1363   extern unsigned IOCTL_KDMKTONE;
   1364   extern unsigned IOCTL_KDSETLED;
   1365   extern unsigned IOCTL_KDSETMODE;
   1366   extern unsigned IOCTL_KDSKBMODE;
   1367   extern unsigned IOCTL_KIOCSOUND;
   1368   extern unsigned IOCTL_PIO_SCRNMAP;
   1369 #endif
   1370 
   1371   extern const int errno_EINVAL;
   1372   extern const int errno_EOWNERDEAD;
   1373 
   1374   extern const int si_SEGV_MAPERR;
   1375   extern const int si_SEGV_ACCERR;
   1376 }  // namespace __sanitizer
   1377 
   1378 #define CHECK_TYPE_SIZE(TYPE) \
   1379   COMPILER_CHECK(sizeof(__sanitizer_##TYPE) == sizeof(TYPE))
   1380 
   1381 #define CHECK_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
   1382   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
   1383                  sizeof(((CLASS *) NULL)->MEMBER));                \
   1384   COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) ==          \
   1385                  offsetof(CLASS, MEMBER))
   1386 
   1387 // For sigaction, which is a function and struct at the same time,
   1388 // and thus requires explicit "struct" in sizeof() expression.
   1389 #define CHECK_STRUCT_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
   1390   COMPILER_CHECK(sizeof(((struct __sanitizer_##CLASS *) NULL)->MEMBER) == \
   1391                  sizeof(((struct CLASS *) NULL)->MEMBER));                \
   1392   COMPILER_CHECK(offsetof(struct __sanitizer_##CLASS, MEMBER) ==          \
   1393                  offsetof(struct CLASS, MEMBER))
   1394 
   1395 #endif
   1396