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      1 //===-- sanitizer_platform_limits_posix.cc --------------------------------===//
      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 #include "sanitizer_platform.h"
     16 
     17 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_MAC
     18 // Tests in this file assume that off_t-dependent data structures match the
     19 // libc ABI. For example, struct dirent here is what readdir() function (as
     20 // exported from libc) returns, and not the user-facing "dirent", which
     21 // depends on _FILE_OFFSET_BITS setting.
     22 // To get this "true" dirent definition, we undefine _FILE_OFFSET_BITS below.
     23 #ifdef _FILE_OFFSET_BITS
     24 #undef _FILE_OFFSET_BITS
     25 #endif
     26 #if SANITIZER_FREEBSD
     27 #define _WANT_RTENTRY
     28 #include <sys/param.h>
     29 #include <sys/socketvar.h>
     30 #endif
     31 #include <arpa/inet.h>
     32 #include <dirent.h>
     33 #include <errno.h>
     34 #include <grp.h>
     35 #include <limits.h>
     36 #include <net/if.h>
     37 #include <netdb.h>
     38 #include <poll.h>
     39 #include <pthread.h>
     40 #include <pwd.h>
     41 #include <signal.h>
     42 #include <stddef.h>
     43 #include <sys/mman.h>
     44 #include <sys/resource.h>
     45 #include <sys/socket.h>
     46 #include <sys/stat.h>
     47 #include <sys/time.h>
     48 #include <sys/times.h>
     49 #include <sys/types.h>
     50 #include <sys/utsname.h>
     51 #include <termios.h>
     52 #include <time.h>
     53 #include <wchar.h>
     54 
     55 #if !SANITIZER_IOS
     56 #include <net/route.h>
     57 #endif
     58 
     59 #if !SANITIZER_ANDROID
     60 #include <sys/mount.h>
     61 #include <sys/timeb.h>
     62 #endif
     63 
     64 #if SANITIZER_LINUX
     65 #include <malloc.h>
     66 #include <mntent.h>
     67 #include <netinet/ether.h>
     68 #include <sys/sysinfo.h>
     69 #include <sys/vt.h>
     70 #include <linux/cdrom.h>
     71 #include <linux/fd.h>
     72 #include <linux/fs.h>
     73 #include <linux/hdreg.h>
     74 #include <linux/input.h>
     75 #include <linux/ioctl.h>
     76 #include <linux/soundcard.h>
     77 #include <linux/sysctl.h>
     78 #include <linux/utsname.h>
     79 #include <linux/posix_types.h>
     80 #include <net/if_arp.h>
     81 #endif
     82 
     83 #if SANITIZER_FREEBSD
     84 # include <sys/mount.h>
     85 # include <sys/sockio.h>
     86 # include <sys/socket.h>
     87 # include <sys/filio.h>
     88 # include <sys/signal.h>
     89 # include <sys/timespec.h>
     90 # include <sys/timex.h>
     91 # include <sys/mqueue.h>
     92 # include <sys/msg.h>
     93 # include <sys/ipc.h>
     94 # include <sys/msg.h>
     95 # include <sys/statvfs.h>
     96 # include <sys/soundcard.h>
     97 # include <sys/mtio.h>
     98 # include <sys/consio.h>
     99 # include <sys/kbio.h>
    100 # include <sys/link_elf.h>
    101 # include <netinet/ip_mroute.h>
    102 # include <netinet/in.h>
    103 # include <net/ethernet.h>
    104 # include <net/ppp_defs.h>
    105 # include <glob.h>
    106 # include <term.h>
    107 
    108 #define _KERNEL  // to declare 'shminfo' structure
    109 # include <sys/shm.h>
    110 #undef _KERNEL
    111 
    112 #undef INLINE  // to avoid clashes with sanitizers' definitions
    113 #endif
    114 
    115 #if SANITIZER_FREEBSD || SANITIZER_IOS
    116 #undef IOC_DIRMASK
    117 #endif
    118 
    119 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    120 # include <utime.h>
    121 # include <sys/ptrace.h>
    122 # if defined(__mips64) || defined(__aarch64__) || defined(__arm__)
    123 #  include <asm/ptrace.h>
    124 #  ifdef __arm__
    125 typedef struct user_fpregs elf_fpregset_t;
    126 #   define ARM_VFPREGS_SIZE_ASAN (32 * 8 /*fpregs*/ + 4 /*fpscr*/)
    127 #   if !defined(ARM_VFPREGS_SIZE)
    128 #     define ARM_VFPREGS_SIZE ARM_VFPREGS_SIZE_ASAN
    129 #   endif
    130 #  endif
    131 # endif
    132 # include <semaphore.h>
    133 #endif
    134 
    135 #if !SANITIZER_ANDROID
    136 #include <ifaddrs.h>
    137 #include <sys/ucontext.h>
    138 #include <wordexp.h>
    139 #endif
    140 
    141 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    142 #include <glob.h>
    143 #include <obstack.h>
    144 #include <mqueue.h>
    145 #include <net/if_ppp.h>
    146 #include <netax25/ax25.h>
    147 #include <netipx/ipx.h>
    148 #include <netrom/netrom.h>
    149 #if HAVE_RPC_XDR_H
    150 # include <rpc/xdr.h>
    151 #elif HAVE_TIRPC_RPC_XDR_H
    152 # include <tirpc/rpc/xdr.h>
    153 #endif
    154 #include <scsi/scsi.h>
    155 #include <sys/mtio.h>
    156 #include <sys/kd.h>
    157 #include <sys/shm.h>
    158 #include <sys/statvfs.h>
    159 #include <sys/timex.h>
    160 #if defined(__mips64)
    161 # include <sys/procfs.h>
    162 #endif
    163 #include <sys/user.h>
    164 #include <sys/ustat.h>
    165 #include <linux/cyclades.h>
    166 #include <linux/if_eql.h>
    167 #include <linux/if_plip.h>
    168 #include <linux/lp.h>
    169 #include <linux/mroute.h>
    170 #include <linux/mroute6.h>
    171 #include <linux/scc.h>
    172 #include <linux/serial.h>
    173 #include <sys/msg.h>
    174 #include <sys/ipc.h>
    175 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
    176 
    177 #if SANITIZER_ANDROID
    178 #include <linux/kd.h>
    179 #include <linux/mtio.h>
    180 #include <linux/ppp_defs.h>
    181 #include <linux/if_ppp.h>
    182 #endif
    183 
    184 #if SANITIZER_LINUX
    185 #include <link.h>
    186 #include <sys/vfs.h>
    187 #include <sys/epoll.h>
    188 #include <linux/capability.h>
    189 #endif // SANITIZER_LINUX
    190 
    191 #if SANITIZER_MAC
    192 #include <net/ethernet.h>
    193 #include <sys/filio.h>
    194 #include <sys/sockio.h>
    195 #endif
    196 
    197 // Include these after system headers to avoid name clashes and ambiguities.
    198 #include "sanitizer_internal_defs.h"
    199 #include "sanitizer_platform_limits_posix.h"
    200 
    201 namespace __sanitizer {
    202   unsigned struct_utsname_sz = sizeof(struct utsname);
    203   unsigned struct_stat_sz = sizeof(struct stat);
    204 #if !SANITIZER_IOS && !SANITIZER_FREEBSD
    205   unsigned struct_stat64_sz = sizeof(struct stat64);
    206 #endif // !SANITIZER_IOS && !SANITIZER_FREEBSD
    207   unsigned struct_rusage_sz = sizeof(struct rusage);
    208   unsigned struct_tm_sz = sizeof(struct tm);
    209   unsigned struct_passwd_sz = sizeof(struct passwd);
    210   unsigned struct_group_sz = sizeof(struct group);
    211   unsigned siginfo_t_sz = sizeof(siginfo_t);
    212   unsigned struct_sigaction_sz = sizeof(struct sigaction);
    213   unsigned struct_itimerval_sz = sizeof(struct itimerval);
    214   unsigned pthread_t_sz = sizeof(pthread_t);
    215   unsigned pthread_cond_t_sz = sizeof(pthread_cond_t);
    216   unsigned pid_t_sz = sizeof(pid_t);
    217   unsigned timeval_sz = sizeof(timeval);
    218   unsigned uid_t_sz = sizeof(uid_t);
    219   unsigned gid_t_sz = sizeof(gid_t);
    220   unsigned mbstate_t_sz = sizeof(mbstate_t);
    221   unsigned sigset_t_sz = sizeof(sigset_t);
    222   unsigned struct_timezone_sz = sizeof(struct timezone);
    223   unsigned struct_tms_sz = sizeof(struct tms);
    224   unsigned struct_sigevent_sz = sizeof(struct sigevent);
    225   unsigned struct_sched_param_sz = sizeof(struct sched_param);
    226 
    227 
    228 #if SANITIZER_MAC && !SANITIZER_IOS
    229   unsigned struct_statfs64_sz = sizeof(struct statfs64);
    230 #endif // SANITIZER_MAC && !SANITIZER_IOS
    231 
    232 #if !SANITIZER_ANDROID
    233   unsigned struct_statfs_sz = sizeof(struct statfs);
    234   unsigned struct_sockaddr_sz = sizeof(struct sockaddr);
    235   unsigned ucontext_t_sz = sizeof(ucontext_t);
    236 #endif // !SANITIZER_ANDROID
    237 
    238 #if SANITIZER_LINUX
    239   unsigned struct_epoll_event_sz = sizeof(struct epoll_event);
    240   unsigned struct_sysinfo_sz = sizeof(struct sysinfo);
    241   unsigned __user_cap_header_struct_sz =
    242       sizeof(struct __user_cap_header_struct);
    243   unsigned __user_cap_data_struct_sz = sizeof(struct __user_cap_data_struct);
    244   unsigned struct_new_utsname_sz = sizeof(struct new_utsname);
    245   unsigned struct_old_utsname_sz = sizeof(struct old_utsname);
    246   unsigned struct_oldold_utsname_sz = sizeof(struct oldold_utsname);
    247 #endif // SANITIZER_LINUX
    248 
    249 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    250   unsigned struct_rlimit_sz = sizeof(struct rlimit);
    251   unsigned struct_timespec_sz = sizeof(struct timespec);
    252   unsigned struct_utimbuf_sz = sizeof(struct utimbuf);
    253   unsigned struct_itimerspec_sz = sizeof(struct itimerspec);
    254 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    255 
    256 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    257   unsigned struct_ustat_sz = sizeof(struct ustat);
    258   unsigned struct_rlimit64_sz = sizeof(struct rlimit64);
    259   unsigned struct_statvfs64_sz = sizeof(struct statvfs64);
    260 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
    261 
    262 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    263   unsigned struct_timex_sz = sizeof(struct timex);
    264   unsigned struct_msqid_ds_sz = sizeof(struct msqid_ds);
    265   unsigned struct_mq_attr_sz = sizeof(struct mq_attr);
    266   unsigned struct_statvfs_sz = sizeof(struct statvfs);
    267 #endif // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    268 
    269   uptr sig_ign = (uptr)SIG_IGN;
    270   uptr sig_dfl = (uptr)SIG_DFL;
    271   uptr sa_siginfo = (uptr)SA_SIGINFO;
    272 
    273 #if SANITIZER_LINUX
    274   int e_tabsz = (int)E_TABSZ;
    275 #endif
    276 
    277 
    278 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    279   unsigned struct_shminfo_sz = sizeof(struct shminfo);
    280   unsigned struct_shm_info_sz = sizeof(struct shm_info);
    281   int shmctl_ipc_stat = (int)IPC_STAT;
    282   int shmctl_ipc_info = (int)IPC_INFO;
    283   int shmctl_shm_info = (int)SHM_INFO;
    284   int shmctl_shm_stat = (int)SHM_STAT;
    285 #endif
    286 
    287   int map_fixed = MAP_FIXED;
    288 
    289   int af_inet = (int)AF_INET;
    290   int af_inet6 = (int)AF_INET6;
    291 
    292   uptr __sanitizer_in_addr_sz(int af) {
    293     if (af == AF_INET)
    294       return sizeof(struct in_addr);
    295     else if (af == AF_INET6)
    296       return sizeof(struct in6_addr);
    297     else
    298       return 0;
    299   }
    300 
    301 #if SANITIZER_LINUX
    302 unsigned struct_ElfW_Phdr_sz = sizeof(ElfW(Phdr));
    303 #elif SANITIZER_FREEBSD
    304 unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
    305 #endif
    306 
    307 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    308   int glob_nomatch = GLOB_NOMATCH;
    309   int glob_altdirfunc = GLOB_ALTDIRFUNC;
    310 #endif
    311 
    312 #if SANITIZER_LINUX && !SANITIZER_ANDROID && \
    313     (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
    314       defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__))
    315 #if defined(__mips64) || defined(__powerpc64__) || defined(__arm__)
    316   unsigned struct_user_regs_struct_sz = sizeof(struct pt_regs);
    317   unsigned struct_user_fpregs_struct_sz = sizeof(elf_fpregset_t);
    318 #elif defined(__aarch64__)
    319   unsigned struct_user_regs_struct_sz = sizeof(struct user_pt_regs);
    320   unsigned struct_user_fpregs_struct_sz = sizeof(struct user_fpsimd_state);
    321 #else
    322   unsigned struct_user_regs_struct_sz = sizeof(struct user_regs_struct);
    323   unsigned struct_user_fpregs_struct_sz = sizeof(struct user_fpregs_struct);
    324 #endif // __mips64 || __powerpc64__ || __aarch64__
    325 #if defined(__x86_64) || defined(__mips64) || defined(__powerpc64__) || \
    326     defined(__aarch64__) || defined(__arm__)
    327   unsigned struct_user_fpxregs_struct_sz = 0;
    328 #else
    329   unsigned struct_user_fpxregs_struct_sz = sizeof(struct user_fpxregs_struct);
    330 #endif // __x86_64 || __mips64 || __powerpc64__ || __aarch64__ || __arm__
    331 #ifdef __arm__
    332   unsigned struct_user_vfpregs_struct_sz = ARM_VFPREGS_SIZE;
    333 #else
    334   unsigned struct_user_vfpregs_struct_sz = 0;
    335 #endif
    336 
    337   int ptrace_peektext = PTRACE_PEEKTEXT;
    338   int ptrace_peekdata = PTRACE_PEEKDATA;
    339   int ptrace_peekuser = PTRACE_PEEKUSER;
    340 #if (defined(PTRACE_GETREGS) && defined(PTRACE_SETREGS)) || \
    341     (defined(PT_GETREGS) && defined(PT_SETREGS))
    342   int ptrace_getregs = PTRACE_GETREGS;
    343   int ptrace_setregs = PTRACE_SETREGS;
    344 #else
    345   int ptrace_getregs = -1;
    346   int ptrace_setregs = -1;
    347 #endif
    348 #if (defined(PTRACE_GETFPREGS) && defined(PTRACE_SETFPREGS)) || \
    349     (defined(PT_GETFPREGS) && defined(PT_SETFPREGS))
    350   int ptrace_getfpregs = PTRACE_GETFPREGS;
    351   int ptrace_setfpregs = PTRACE_SETFPREGS;
    352 #else
    353   int ptrace_getfpregs = -1;
    354   int ptrace_setfpregs = -1;
    355 #endif
    356 #if (defined(PTRACE_GETFPXREGS) && defined(PTRACE_SETFPXREGS)) || \
    357     (defined(PT_GETFPXREGS) && defined(PT_SETFPXREGS))
    358   int ptrace_getfpxregs = PTRACE_GETFPXREGS;
    359   int ptrace_setfpxregs = PTRACE_SETFPXREGS;
    360 #else
    361   int ptrace_getfpxregs = -1;
    362   int ptrace_setfpxregs = -1;
    363 #endif // PTRACE_GETFPXREGS/PTRACE_SETFPXREGS
    364 #if defined(PTRACE_GETVFPREGS) && defined(PTRACE_SETVFPREGS)
    365   int ptrace_getvfpregs = PTRACE_GETVFPREGS;
    366   int ptrace_setvfpregs = PTRACE_SETVFPREGS;
    367 #else
    368   int ptrace_getvfpregs = -1;
    369   int ptrace_setvfpregs = -1;
    370 #endif
    371   int ptrace_geteventmsg = PTRACE_GETEVENTMSG;
    372 #if (defined(PTRACE_GETSIGINFO) && defined(PTRACE_SETSIGINFO)) ||              \
    373     (defined(PT_GETSIGINFO) && defined(PT_SETSIGINFO))
    374   int ptrace_getsiginfo = PTRACE_GETSIGINFO;
    375   int ptrace_setsiginfo = PTRACE_SETSIGINFO;
    376 #else
    377   int ptrace_getsiginfo = -1;
    378   int ptrace_setsiginfo = -1;
    379 #endif // PTRACE_GETSIGINFO/PTRACE_SETSIGINFO
    380 #if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET)
    381   int ptrace_getregset = PTRACE_GETREGSET;
    382   int ptrace_setregset = PTRACE_SETREGSET;
    383 #else
    384   int ptrace_getregset = -1;
    385   int ptrace_setregset = -1;
    386 #endif // PTRACE_GETREGSET/PTRACE_SETREGSET
    387 #endif
    388 
    389   unsigned path_max = PATH_MAX;
    390 
    391   // ioctl arguments
    392   unsigned struct_ifreq_sz = sizeof(struct ifreq);
    393   unsigned struct_termios_sz = sizeof(struct termios);
    394   unsigned struct_winsize_sz = sizeof(struct winsize);
    395 
    396 #if SANITIZER_LINUX
    397   unsigned struct_arpreq_sz = sizeof(struct arpreq);
    398   unsigned struct_cdrom_msf_sz = sizeof(struct cdrom_msf);
    399   unsigned struct_cdrom_multisession_sz = sizeof(struct cdrom_multisession);
    400   unsigned struct_cdrom_read_audio_sz = sizeof(struct cdrom_read_audio);
    401   unsigned struct_cdrom_subchnl_sz = sizeof(struct cdrom_subchnl);
    402   unsigned struct_cdrom_ti_sz = sizeof(struct cdrom_ti);
    403   unsigned struct_cdrom_tocentry_sz = sizeof(struct cdrom_tocentry);
    404   unsigned struct_cdrom_tochdr_sz = sizeof(struct cdrom_tochdr);
    405   unsigned struct_cdrom_volctrl_sz = sizeof(struct cdrom_volctrl);
    406   unsigned struct_ff_effect_sz = sizeof(struct ff_effect);
    407   unsigned struct_floppy_drive_params_sz = sizeof(struct floppy_drive_params);
    408   unsigned struct_floppy_drive_struct_sz = sizeof(struct floppy_drive_struct);
    409   unsigned struct_floppy_fdc_state_sz = sizeof(struct floppy_fdc_state);
    410   unsigned struct_floppy_max_errors_sz = sizeof(struct floppy_max_errors);
    411   unsigned struct_floppy_raw_cmd_sz = sizeof(struct floppy_raw_cmd);
    412   unsigned struct_floppy_struct_sz = sizeof(struct floppy_struct);
    413   unsigned struct_floppy_write_errors_sz = sizeof(struct floppy_write_errors);
    414   unsigned struct_format_descr_sz = sizeof(struct format_descr);
    415   unsigned struct_hd_driveid_sz = sizeof(struct hd_driveid);
    416   unsigned struct_hd_geometry_sz = sizeof(struct hd_geometry);
    417   unsigned struct_input_absinfo_sz = sizeof(struct input_absinfo);
    418   unsigned struct_input_id_sz = sizeof(struct input_id);
    419   unsigned struct_mtpos_sz = sizeof(struct mtpos);
    420   unsigned struct_termio_sz = sizeof(struct termio);
    421   unsigned struct_vt_consize_sz = sizeof(struct vt_consize);
    422   unsigned struct_vt_sizes_sz = sizeof(struct vt_sizes);
    423   unsigned struct_vt_stat_sz = sizeof(struct vt_stat);
    424 #endif // SANITIZER_LINUX
    425 
    426 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    427 #if SOUND_VERSION >= 0x040000
    428   unsigned struct_copr_buffer_sz = 0;
    429   unsigned struct_copr_debug_buf_sz = 0;
    430   unsigned struct_copr_msg_sz = 0;
    431 #else
    432   unsigned struct_copr_buffer_sz = sizeof(struct copr_buffer);
    433   unsigned struct_copr_debug_buf_sz = sizeof(struct copr_debug_buf);
    434   unsigned struct_copr_msg_sz = sizeof(struct copr_msg);
    435 #endif
    436   unsigned struct_midi_info_sz = sizeof(struct midi_info);
    437   unsigned struct_mtget_sz = sizeof(struct mtget);
    438   unsigned struct_mtop_sz = sizeof(struct mtop);
    439   unsigned struct_rtentry_sz = sizeof(struct rtentry);
    440   unsigned struct_sbi_instrument_sz = sizeof(struct sbi_instrument);
    441   unsigned struct_seq_event_rec_sz = sizeof(struct seq_event_rec);
    442   unsigned struct_synth_info_sz = sizeof(struct synth_info);
    443   unsigned struct_vt_mode_sz = sizeof(struct vt_mode);
    444 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    445 
    446 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    447   unsigned struct_ax25_parms_struct_sz = sizeof(struct ax25_parms_struct);
    448   unsigned struct_cyclades_monitor_sz = sizeof(struct cyclades_monitor);
    449 #if EV_VERSION > (0x010000)
    450   unsigned struct_input_keymap_entry_sz = sizeof(struct input_keymap_entry);
    451 #else
    452   unsigned struct_input_keymap_entry_sz = 0;
    453 #endif
    454   unsigned struct_ipx_config_data_sz = sizeof(struct ipx_config_data);
    455   unsigned struct_kbdiacrs_sz = sizeof(struct kbdiacrs);
    456   unsigned struct_kbentry_sz = sizeof(struct kbentry);
    457   unsigned struct_kbkeycode_sz = sizeof(struct kbkeycode);
    458   unsigned struct_kbsentry_sz = sizeof(struct kbsentry);
    459   unsigned struct_mtconfiginfo_sz = sizeof(struct mtconfiginfo);
    460   unsigned struct_nr_parms_struct_sz = sizeof(struct nr_parms_struct);
    461   unsigned struct_scc_modem_sz = sizeof(struct scc_modem);
    462   unsigned struct_scc_stat_sz = sizeof(struct scc_stat);
    463   unsigned struct_serial_multiport_struct_sz
    464       = sizeof(struct serial_multiport_struct);
    465   unsigned struct_serial_struct_sz = sizeof(struct serial_struct);
    466   unsigned struct_sockaddr_ax25_sz = sizeof(struct sockaddr_ax25);
    467   unsigned struct_unimapdesc_sz = sizeof(struct unimapdesc);
    468   unsigned struct_unimapinit_sz = sizeof(struct unimapinit);
    469 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
    470 
    471 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    472   unsigned struct_audio_buf_info_sz = sizeof(struct audio_buf_info);
    473   unsigned struct_ppp_stats_sz = sizeof(struct ppp_stats);
    474 #endif // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    475 
    476 #if !SANITIZER_ANDROID && !SANITIZER_MAC
    477   unsigned struct_sioc_sg_req_sz = sizeof(struct sioc_sg_req);
    478   unsigned struct_sioc_vif_req_sz = sizeof(struct sioc_vif_req);
    479 #endif
    480 
    481   const unsigned IOCTL_NOT_PRESENT = 0;
    482 
    483   unsigned IOCTL_FIOASYNC = FIOASYNC;
    484   unsigned IOCTL_FIOCLEX = FIOCLEX;
    485   unsigned IOCTL_FIOGETOWN = FIOGETOWN;
    486   unsigned IOCTL_FIONBIO = FIONBIO;
    487   unsigned IOCTL_FIONCLEX = FIONCLEX;
    488   unsigned IOCTL_FIOSETOWN = FIOSETOWN;
    489   unsigned IOCTL_SIOCADDMULTI = SIOCADDMULTI;
    490   unsigned IOCTL_SIOCATMARK = SIOCATMARK;
    491   unsigned IOCTL_SIOCDELMULTI = SIOCDELMULTI;
    492   unsigned IOCTL_SIOCGIFADDR = SIOCGIFADDR;
    493   unsigned IOCTL_SIOCGIFBRDADDR = SIOCGIFBRDADDR;
    494   unsigned IOCTL_SIOCGIFCONF = SIOCGIFCONF;
    495   unsigned IOCTL_SIOCGIFDSTADDR = SIOCGIFDSTADDR;
    496   unsigned IOCTL_SIOCGIFFLAGS = SIOCGIFFLAGS;
    497   unsigned IOCTL_SIOCGIFMETRIC = SIOCGIFMETRIC;
    498   unsigned IOCTL_SIOCGIFMTU = SIOCGIFMTU;
    499   unsigned IOCTL_SIOCGIFNETMASK = SIOCGIFNETMASK;
    500   unsigned IOCTL_SIOCGPGRP = SIOCGPGRP;
    501   unsigned IOCTL_SIOCSIFADDR = SIOCSIFADDR;
    502   unsigned IOCTL_SIOCSIFBRDADDR = SIOCSIFBRDADDR;
    503   unsigned IOCTL_SIOCSIFDSTADDR = SIOCSIFDSTADDR;
    504   unsigned IOCTL_SIOCSIFFLAGS = SIOCSIFFLAGS;
    505   unsigned IOCTL_SIOCSIFMETRIC = SIOCSIFMETRIC;
    506   unsigned IOCTL_SIOCSIFMTU = SIOCSIFMTU;
    507   unsigned IOCTL_SIOCSIFNETMASK = SIOCSIFNETMASK;
    508   unsigned IOCTL_SIOCSPGRP = SIOCSPGRP;
    509   unsigned IOCTL_TIOCCONS = TIOCCONS;
    510   unsigned IOCTL_TIOCEXCL = TIOCEXCL;
    511   unsigned IOCTL_TIOCGETD = TIOCGETD;
    512   unsigned IOCTL_TIOCGPGRP = TIOCGPGRP;
    513   unsigned IOCTL_TIOCGWINSZ = TIOCGWINSZ;
    514   unsigned IOCTL_TIOCMBIC = TIOCMBIC;
    515   unsigned IOCTL_TIOCMBIS = TIOCMBIS;
    516   unsigned IOCTL_TIOCMGET = TIOCMGET;
    517   unsigned IOCTL_TIOCMSET = TIOCMSET;
    518   unsigned IOCTL_TIOCNOTTY = TIOCNOTTY;
    519   unsigned IOCTL_TIOCNXCL = TIOCNXCL;
    520   unsigned IOCTL_TIOCOUTQ = TIOCOUTQ;
    521   unsigned IOCTL_TIOCPKT = TIOCPKT;
    522   unsigned IOCTL_TIOCSCTTY = TIOCSCTTY;
    523   unsigned IOCTL_TIOCSETD = TIOCSETD;
    524   unsigned IOCTL_TIOCSPGRP = TIOCSPGRP;
    525   unsigned IOCTL_TIOCSTI = TIOCSTI;
    526   unsigned IOCTL_TIOCSWINSZ = TIOCSWINSZ;
    527 #if ((SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID)
    528   unsigned IOCTL_SIOCGETSGCNT = SIOCGETSGCNT;
    529   unsigned IOCTL_SIOCGETVIFCNT = SIOCGETVIFCNT;
    530 #endif
    531 
    532 #if SANITIZER_LINUX
    533   unsigned IOCTL_EVIOCGABS = EVIOCGABS(0);
    534   unsigned IOCTL_EVIOCGBIT = EVIOCGBIT(0, 0);
    535   unsigned IOCTL_EVIOCGEFFECTS = EVIOCGEFFECTS;
    536   unsigned IOCTL_EVIOCGID = EVIOCGID;
    537   unsigned IOCTL_EVIOCGKEY = EVIOCGKEY(0);
    538   unsigned IOCTL_EVIOCGKEYCODE = EVIOCGKEYCODE;
    539   unsigned IOCTL_EVIOCGLED = EVIOCGLED(0);
    540   unsigned IOCTL_EVIOCGNAME = EVIOCGNAME(0);
    541   unsigned IOCTL_EVIOCGPHYS = EVIOCGPHYS(0);
    542   unsigned IOCTL_EVIOCGRAB = EVIOCGRAB;
    543   unsigned IOCTL_EVIOCGREP = EVIOCGREP;
    544   unsigned IOCTL_EVIOCGSND = EVIOCGSND(0);
    545   unsigned IOCTL_EVIOCGSW = EVIOCGSW(0);
    546   unsigned IOCTL_EVIOCGUNIQ = EVIOCGUNIQ(0);
    547   unsigned IOCTL_EVIOCGVERSION = EVIOCGVERSION;
    548   unsigned IOCTL_EVIOCRMFF = EVIOCRMFF;
    549   unsigned IOCTL_EVIOCSABS = EVIOCSABS(0);
    550   unsigned IOCTL_EVIOCSFF = EVIOCSFF;
    551   unsigned IOCTL_EVIOCSKEYCODE = EVIOCSKEYCODE;
    552   unsigned IOCTL_EVIOCSREP = EVIOCSREP;
    553   unsigned IOCTL_BLKFLSBUF = BLKFLSBUF;
    554   unsigned IOCTL_BLKGETSIZE = BLKGETSIZE;
    555   unsigned IOCTL_BLKRAGET = BLKRAGET;
    556   unsigned IOCTL_BLKRASET = BLKRASET;
    557   unsigned IOCTL_BLKROGET = BLKROGET;
    558   unsigned IOCTL_BLKROSET = BLKROSET;
    559   unsigned IOCTL_BLKRRPART = BLKRRPART;
    560   unsigned IOCTL_CDROMAUDIOBUFSIZ = CDROMAUDIOBUFSIZ;
    561   unsigned IOCTL_CDROMEJECT = CDROMEJECT;
    562   unsigned IOCTL_CDROMEJECT_SW = CDROMEJECT_SW;
    563   unsigned IOCTL_CDROMMULTISESSION = CDROMMULTISESSION;
    564   unsigned IOCTL_CDROMPAUSE = CDROMPAUSE;
    565   unsigned IOCTL_CDROMPLAYMSF = CDROMPLAYMSF;
    566   unsigned IOCTL_CDROMPLAYTRKIND = CDROMPLAYTRKIND;
    567   unsigned IOCTL_CDROMREADAUDIO = CDROMREADAUDIO;
    568   unsigned IOCTL_CDROMREADCOOKED = CDROMREADCOOKED;
    569   unsigned IOCTL_CDROMREADMODE1 = CDROMREADMODE1;
    570   unsigned IOCTL_CDROMREADMODE2 = CDROMREADMODE2;
    571   unsigned IOCTL_CDROMREADRAW = CDROMREADRAW;
    572   unsigned IOCTL_CDROMREADTOCENTRY = CDROMREADTOCENTRY;
    573   unsigned IOCTL_CDROMREADTOCHDR = CDROMREADTOCHDR;
    574   unsigned IOCTL_CDROMRESET = CDROMRESET;
    575   unsigned IOCTL_CDROMRESUME = CDROMRESUME;
    576   unsigned IOCTL_CDROMSEEK = CDROMSEEK;
    577   unsigned IOCTL_CDROMSTART = CDROMSTART;
    578   unsigned IOCTL_CDROMSTOP = CDROMSTOP;
    579   unsigned IOCTL_CDROMSUBCHNL = CDROMSUBCHNL;
    580   unsigned IOCTL_CDROMVOLCTRL = CDROMVOLCTRL;
    581   unsigned IOCTL_CDROMVOLREAD = CDROMVOLREAD;
    582   unsigned IOCTL_CDROM_GET_UPC = CDROM_GET_UPC;
    583   unsigned IOCTL_FDCLRPRM = FDCLRPRM;
    584   unsigned IOCTL_FDDEFPRM = FDDEFPRM;
    585   unsigned IOCTL_FDFLUSH = FDFLUSH;
    586   unsigned IOCTL_FDFMTBEG = FDFMTBEG;
    587   unsigned IOCTL_FDFMTEND = FDFMTEND;
    588   unsigned IOCTL_FDFMTTRK = FDFMTTRK;
    589   unsigned IOCTL_FDGETDRVPRM = FDGETDRVPRM;
    590   unsigned IOCTL_FDGETDRVSTAT = FDGETDRVSTAT;
    591   unsigned IOCTL_FDGETDRVTYP = FDGETDRVTYP;
    592   unsigned IOCTL_FDGETFDCSTAT = FDGETFDCSTAT;
    593   unsigned IOCTL_FDGETMAXERRS = FDGETMAXERRS;
    594   unsigned IOCTL_FDGETPRM = FDGETPRM;
    595   unsigned IOCTL_FDMSGOFF = FDMSGOFF;
    596   unsigned IOCTL_FDMSGON = FDMSGON;
    597   unsigned IOCTL_FDPOLLDRVSTAT = FDPOLLDRVSTAT;
    598   unsigned IOCTL_FDRAWCMD = FDRAWCMD;
    599   unsigned IOCTL_FDRESET = FDRESET;
    600   unsigned IOCTL_FDSETDRVPRM = FDSETDRVPRM;
    601   unsigned IOCTL_FDSETEMSGTRESH = FDSETEMSGTRESH;
    602   unsigned IOCTL_FDSETMAXERRS = FDSETMAXERRS;
    603   unsigned IOCTL_FDSETPRM = FDSETPRM;
    604   unsigned IOCTL_FDTWADDLE = FDTWADDLE;
    605   unsigned IOCTL_FDWERRORCLR = FDWERRORCLR;
    606   unsigned IOCTL_FDWERRORGET = FDWERRORGET;
    607   unsigned IOCTL_HDIO_DRIVE_CMD = HDIO_DRIVE_CMD;
    608   unsigned IOCTL_HDIO_GETGEO = HDIO_GETGEO;
    609   unsigned IOCTL_HDIO_GET_32BIT = HDIO_GET_32BIT;
    610   unsigned IOCTL_HDIO_GET_DMA = HDIO_GET_DMA;
    611   unsigned IOCTL_HDIO_GET_IDENTITY = HDIO_GET_IDENTITY;
    612   unsigned IOCTL_HDIO_GET_KEEPSETTINGS = HDIO_GET_KEEPSETTINGS;
    613   unsigned IOCTL_HDIO_GET_MULTCOUNT = HDIO_GET_MULTCOUNT;
    614   unsigned IOCTL_HDIO_GET_NOWERR = HDIO_GET_NOWERR;
    615   unsigned IOCTL_HDIO_GET_UNMASKINTR = HDIO_GET_UNMASKINTR;
    616   unsigned IOCTL_HDIO_SET_32BIT = HDIO_SET_32BIT;
    617   unsigned IOCTL_HDIO_SET_DMA = HDIO_SET_DMA;
    618   unsigned IOCTL_HDIO_SET_KEEPSETTINGS = HDIO_SET_KEEPSETTINGS;
    619   unsigned IOCTL_HDIO_SET_MULTCOUNT = HDIO_SET_MULTCOUNT;
    620   unsigned IOCTL_HDIO_SET_NOWERR = HDIO_SET_NOWERR;
    621   unsigned IOCTL_HDIO_SET_UNMASKINTR = HDIO_SET_UNMASKINTR;
    622   unsigned IOCTL_MTIOCPOS = MTIOCPOS;
    623   unsigned IOCTL_PPPIOCGASYNCMAP = PPPIOCGASYNCMAP;
    624   unsigned IOCTL_PPPIOCGDEBUG = PPPIOCGDEBUG;
    625   unsigned IOCTL_PPPIOCGFLAGS = PPPIOCGFLAGS;
    626   unsigned IOCTL_PPPIOCGUNIT = PPPIOCGUNIT;
    627   unsigned IOCTL_PPPIOCGXASYNCMAP = PPPIOCGXASYNCMAP;
    628   unsigned IOCTL_PPPIOCSASYNCMAP = PPPIOCSASYNCMAP;
    629   unsigned IOCTL_PPPIOCSDEBUG = PPPIOCSDEBUG;
    630   unsigned IOCTL_PPPIOCSFLAGS = PPPIOCSFLAGS;
    631   unsigned IOCTL_PPPIOCSMAXCID = PPPIOCSMAXCID;
    632   unsigned IOCTL_PPPIOCSMRU = PPPIOCSMRU;
    633   unsigned IOCTL_PPPIOCSXASYNCMAP = PPPIOCSXASYNCMAP;
    634   unsigned IOCTL_SIOCADDRT = SIOCADDRT;
    635   unsigned IOCTL_SIOCDARP = SIOCDARP;
    636   unsigned IOCTL_SIOCDELRT = SIOCDELRT;
    637   unsigned IOCTL_SIOCDRARP = SIOCDRARP;
    638   unsigned IOCTL_SIOCGARP = SIOCGARP;
    639   unsigned IOCTL_SIOCGIFENCAP = SIOCGIFENCAP;
    640   unsigned IOCTL_SIOCGIFHWADDR = SIOCGIFHWADDR;
    641   unsigned IOCTL_SIOCGIFMAP = SIOCGIFMAP;
    642   unsigned IOCTL_SIOCGIFMEM = SIOCGIFMEM;
    643   unsigned IOCTL_SIOCGIFNAME = SIOCGIFNAME;
    644   unsigned IOCTL_SIOCGIFSLAVE = SIOCGIFSLAVE;
    645   unsigned IOCTL_SIOCGRARP = SIOCGRARP;
    646   unsigned IOCTL_SIOCGSTAMP = SIOCGSTAMP;
    647   unsigned IOCTL_SIOCSARP = SIOCSARP;
    648   unsigned IOCTL_SIOCSIFENCAP = SIOCSIFENCAP;
    649   unsigned IOCTL_SIOCSIFHWADDR = SIOCSIFHWADDR;
    650   unsigned IOCTL_SIOCSIFLINK = SIOCSIFLINK;
    651   unsigned IOCTL_SIOCSIFMAP = SIOCSIFMAP;
    652   unsigned IOCTL_SIOCSIFMEM = SIOCSIFMEM;
    653   unsigned IOCTL_SIOCSIFSLAVE = SIOCSIFSLAVE;
    654   unsigned IOCTL_SIOCSRARP = SIOCSRARP;
    655 # if SOUND_VERSION >= 0x040000
    656   unsigned IOCTL_SNDCTL_COPR_HALT = IOCTL_NOT_PRESENT;
    657   unsigned IOCTL_SNDCTL_COPR_LOAD = IOCTL_NOT_PRESENT;
    658   unsigned IOCTL_SNDCTL_COPR_RCODE = IOCTL_NOT_PRESENT;
    659   unsigned IOCTL_SNDCTL_COPR_RCVMSG = IOCTL_NOT_PRESENT;
    660   unsigned IOCTL_SNDCTL_COPR_RDATA = IOCTL_NOT_PRESENT;
    661   unsigned IOCTL_SNDCTL_COPR_RESET = IOCTL_NOT_PRESENT;
    662   unsigned IOCTL_SNDCTL_COPR_RUN = IOCTL_NOT_PRESENT;
    663   unsigned IOCTL_SNDCTL_COPR_SENDMSG = IOCTL_NOT_PRESENT;
    664   unsigned IOCTL_SNDCTL_COPR_WCODE = IOCTL_NOT_PRESENT;
    665   unsigned IOCTL_SNDCTL_COPR_WDATA = IOCTL_NOT_PRESENT;
    666   unsigned IOCTL_SOUND_PCM_READ_BITS = IOCTL_NOT_PRESENT;
    667   unsigned IOCTL_SOUND_PCM_READ_CHANNELS = IOCTL_NOT_PRESENT;
    668   unsigned IOCTL_SOUND_PCM_READ_FILTER = IOCTL_NOT_PRESENT;
    669   unsigned IOCTL_SOUND_PCM_READ_RATE = IOCTL_NOT_PRESENT;
    670   unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS = IOCTL_NOT_PRESENT;
    671   unsigned IOCTL_SOUND_PCM_WRITE_FILTER = IOCTL_NOT_PRESENT;
    672 # else  // SOUND_VERSION
    673   unsigned IOCTL_SNDCTL_COPR_HALT = SNDCTL_COPR_HALT;
    674   unsigned IOCTL_SNDCTL_COPR_LOAD = SNDCTL_COPR_LOAD;
    675   unsigned IOCTL_SNDCTL_COPR_RCODE = SNDCTL_COPR_RCODE;
    676   unsigned IOCTL_SNDCTL_COPR_RCVMSG = SNDCTL_COPR_RCVMSG;
    677   unsigned IOCTL_SNDCTL_COPR_RDATA = SNDCTL_COPR_RDATA;
    678   unsigned IOCTL_SNDCTL_COPR_RESET = SNDCTL_COPR_RESET;
    679   unsigned IOCTL_SNDCTL_COPR_RUN = SNDCTL_COPR_RUN;
    680   unsigned IOCTL_SNDCTL_COPR_SENDMSG = SNDCTL_COPR_SENDMSG;
    681   unsigned IOCTL_SNDCTL_COPR_WCODE = SNDCTL_COPR_WCODE;
    682   unsigned IOCTL_SNDCTL_COPR_WDATA = SNDCTL_COPR_WDATA;
    683   unsigned IOCTL_SOUND_PCM_READ_BITS = SOUND_PCM_READ_BITS;
    684   unsigned IOCTL_SOUND_PCM_READ_CHANNELS = SOUND_PCM_READ_CHANNELS;
    685   unsigned IOCTL_SOUND_PCM_READ_FILTER = SOUND_PCM_READ_FILTER;
    686   unsigned IOCTL_SOUND_PCM_READ_RATE = SOUND_PCM_READ_RATE;
    687   unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS = SOUND_PCM_WRITE_CHANNELS;
    688   unsigned IOCTL_SOUND_PCM_WRITE_FILTER = SOUND_PCM_WRITE_FILTER;
    689 #endif // SOUND_VERSION
    690   unsigned IOCTL_TCFLSH = TCFLSH;
    691   unsigned IOCTL_TCGETA = TCGETA;
    692   unsigned IOCTL_TCGETS = TCGETS;
    693   unsigned IOCTL_TCSBRK = TCSBRK;
    694   unsigned IOCTL_TCSBRKP = TCSBRKP;
    695   unsigned IOCTL_TCSETA = TCSETA;
    696   unsigned IOCTL_TCSETAF = TCSETAF;
    697   unsigned IOCTL_TCSETAW = TCSETAW;
    698   unsigned IOCTL_TCSETS = TCSETS;
    699   unsigned IOCTL_TCSETSF = TCSETSF;
    700   unsigned IOCTL_TCSETSW = TCSETSW;
    701   unsigned IOCTL_TCXONC = TCXONC;
    702   unsigned IOCTL_TIOCGLCKTRMIOS = TIOCGLCKTRMIOS;
    703   unsigned IOCTL_TIOCGSOFTCAR = TIOCGSOFTCAR;
    704   unsigned IOCTL_TIOCINQ = TIOCINQ;
    705   unsigned IOCTL_TIOCLINUX = TIOCLINUX;
    706   unsigned IOCTL_TIOCSERCONFIG = TIOCSERCONFIG;
    707   unsigned IOCTL_TIOCSERGETLSR = TIOCSERGETLSR;
    708   unsigned IOCTL_TIOCSERGWILD = TIOCSERGWILD;
    709   unsigned IOCTL_TIOCSERSWILD = TIOCSERSWILD;
    710   unsigned IOCTL_TIOCSLCKTRMIOS = TIOCSLCKTRMIOS;
    711   unsigned IOCTL_TIOCSSOFTCAR = TIOCSSOFTCAR;
    712   unsigned IOCTL_VT_DISALLOCATE = VT_DISALLOCATE;
    713   unsigned IOCTL_VT_GETSTATE = VT_GETSTATE;
    714   unsigned IOCTL_VT_RESIZE = VT_RESIZE;
    715   unsigned IOCTL_VT_RESIZEX = VT_RESIZEX;
    716   unsigned IOCTL_VT_SENDSIG = VT_SENDSIG;
    717 #endif // SANITIZER_LINUX
    718 
    719 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    720   unsigned IOCTL_MTIOCGET = MTIOCGET;
    721   unsigned IOCTL_MTIOCTOP = MTIOCTOP;
    722   unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE = SNDCTL_DSP_GETBLKSIZE;
    723   unsigned IOCTL_SNDCTL_DSP_GETFMTS = SNDCTL_DSP_GETFMTS;
    724   unsigned IOCTL_SNDCTL_DSP_NONBLOCK = SNDCTL_DSP_NONBLOCK;
    725   unsigned IOCTL_SNDCTL_DSP_POST = SNDCTL_DSP_POST;
    726   unsigned IOCTL_SNDCTL_DSP_RESET = SNDCTL_DSP_RESET;
    727   unsigned IOCTL_SNDCTL_DSP_SETFMT = SNDCTL_DSP_SETFMT;
    728   unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT = SNDCTL_DSP_SETFRAGMENT;
    729   unsigned IOCTL_SNDCTL_DSP_SPEED = SNDCTL_DSP_SPEED;
    730   unsigned IOCTL_SNDCTL_DSP_STEREO = SNDCTL_DSP_STEREO;
    731   unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE = SNDCTL_DSP_SUBDIVIDE;
    732   unsigned IOCTL_SNDCTL_DSP_SYNC = SNDCTL_DSP_SYNC;
    733   unsigned IOCTL_SNDCTL_FM_4OP_ENABLE = SNDCTL_FM_4OP_ENABLE;
    734   unsigned IOCTL_SNDCTL_FM_LOAD_INSTR = SNDCTL_FM_LOAD_INSTR;
    735   unsigned IOCTL_SNDCTL_MIDI_INFO = SNDCTL_MIDI_INFO;
    736   unsigned IOCTL_SNDCTL_MIDI_PRETIME = SNDCTL_MIDI_PRETIME;
    737   unsigned IOCTL_SNDCTL_SEQ_CTRLRATE = SNDCTL_SEQ_CTRLRATE;
    738   unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT = SNDCTL_SEQ_GETINCOUNT;
    739   unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT = SNDCTL_SEQ_GETOUTCOUNT;
    740   unsigned IOCTL_SNDCTL_SEQ_NRMIDIS = SNDCTL_SEQ_NRMIDIS;
    741   unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS = SNDCTL_SEQ_NRSYNTHS;
    742   unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND = SNDCTL_SEQ_OUTOFBAND;
    743   unsigned IOCTL_SNDCTL_SEQ_PANIC = SNDCTL_SEQ_PANIC;
    744   unsigned IOCTL_SNDCTL_SEQ_PERCMODE = SNDCTL_SEQ_PERCMODE;
    745   unsigned IOCTL_SNDCTL_SEQ_RESET = SNDCTL_SEQ_RESET;
    746   unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES = SNDCTL_SEQ_RESETSAMPLES;
    747   unsigned IOCTL_SNDCTL_SEQ_SYNC = SNDCTL_SEQ_SYNC;
    748   unsigned IOCTL_SNDCTL_SEQ_TESTMIDI = SNDCTL_SEQ_TESTMIDI;
    749   unsigned IOCTL_SNDCTL_SEQ_THRESHOLD = SNDCTL_SEQ_THRESHOLD;
    750   unsigned IOCTL_SNDCTL_SYNTH_INFO = SNDCTL_SYNTH_INFO;
    751   unsigned IOCTL_SNDCTL_SYNTH_MEMAVL = SNDCTL_SYNTH_MEMAVL;
    752   unsigned IOCTL_SNDCTL_TMR_CONTINUE = SNDCTL_TMR_CONTINUE;
    753   unsigned IOCTL_SNDCTL_TMR_METRONOME = SNDCTL_TMR_METRONOME;
    754   unsigned IOCTL_SNDCTL_TMR_SELECT = SNDCTL_TMR_SELECT;
    755   unsigned IOCTL_SNDCTL_TMR_SOURCE = SNDCTL_TMR_SOURCE;
    756   unsigned IOCTL_SNDCTL_TMR_START = SNDCTL_TMR_START;
    757   unsigned IOCTL_SNDCTL_TMR_STOP = SNDCTL_TMR_STOP;
    758   unsigned IOCTL_SNDCTL_TMR_TEMPO = SNDCTL_TMR_TEMPO;
    759   unsigned IOCTL_SNDCTL_TMR_TIMEBASE = SNDCTL_TMR_TIMEBASE;
    760   unsigned IOCTL_SOUND_MIXER_READ_ALTPCM = SOUND_MIXER_READ_ALTPCM;
    761   unsigned IOCTL_SOUND_MIXER_READ_BASS = SOUND_MIXER_READ_BASS;
    762   unsigned IOCTL_SOUND_MIXER_READ_CAPS = SOUND_MIXER_READ_CAPS;
    763   unsigned IOCTL_SOUND_MIXER_READ_CD = SOUND_MIXER_READ_CD;
    764   unsigned IOCTL_SOUND_MIXER_READ_DEVMASK = SOUND_MIXER_READ_DEVMASK;
    765   unsigned IOCTL_SOUND_MIXER_READ_ENHANCE = SOUND_MIXER_READ_ENHANCE;
    766   unsigned IOCTL_SOUND_MIXER_READ_IGAIN = SOUND_MIXER_READ_IGAIN;
    767   unsigned IOCTL_SOUND_MIXER_READ_IMIX = SOUND_MIXER_READ_IMIX;
    768   unsigned IOCTL_SOUND_MIXER_READ_LINE = SOUND_MIXER_READ_LINE;
    769   unsigned IOCTL_SOUND_MIXER_READ_LINE1 = SOUND_MIXER_READ_LINE1;
    770   unsigned IOCTL_SOUND_MIXER_READ_LINE2 = SOUND_MIXER_READ_LINE2;
    771   unsigned IOCTL_SOUND_MIXER_READ_LINE3 = SOUND_MIXER_READ_LINE3;
    772   unsigned IOCTL_SOUND_MIXER_READ_LOUD = SOUND_MIXER_READ_LOUD;
    773   unsigned IOCTL_SOUND_MIXER_READ_MIC = SOUND_MIXER_READ_MIC;
    774   unsigned IOCTL_SOUND_MIXER_READ_MUTE = SOUND_MIXER_READ_MUTE;
    775   unsigned IOCTL_SOUND_MIXER_READ_OGAIN = SOUND_MIXER_READ_OGAIN;
    776   unsigned IOCTL_SOUND_MIXER_READ_PCM = SOUND_MIXER_READ_PCM;
    777   unsigned IOCTL_SOUND_MIXER_READ_RECLEV = SOUND_MIXER_READ_RECLEV;
    778   unsigned IOCTL_SOUND_MIXER_READ_RECMASK = SOUND_MIXER_READ_RECMASK;
    779   unsigned IOCTL_SOUND_MIXER_READ_RECSRC = SOUND_MIXER_READ_RECSRC;
    780   unsigned IOCTL_SOUND_MIXER_READ_SPEAKER = SOUND_MIXER_READ_SPEAKER;
    781   unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS = SOUND_MIXER_READ_STEREODEVS;
    782   unsigned IOCTL_SOUND_MIXER_READ_SYNTH = SOUND_MIXER_READ_SYNTH;
    783   unsigned IOCTL_SOUND_MIXER_READ_TREBLE = SOUND_MIXER_READ_TREBLE;
    784   unsigned IOCTL_SOUND_MIXER_READ_VOLUME = SOUND_MIXER_READ_VOLUME;
    785   unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM = SOUND_MIXER_WRITE_ALTPCM;
    786   unsigned IOCTL_SOUND_MIXER_WRITE_BASS = SOUND_MIXER_WRITE_BASS;
    787   unsigned IOCTL_SOUND_MIXER_WRITE_CD = SOUND_MIXER_WRITE_CD;
    788   unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE = SOUND_MIXER_WRITE_ENHANCE;
    789   unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN = SOUND_MIXER_WRITE_IGAIN;
    790   unsigned IOCTL_SOUND_MIXER_WRITE_IMIX = SOUND_MIXER_WRITE_IMIX;
    791   unsigned IOCTL_SOUND_MIXER_WRITE_LINE = SOUND_MIXER_WRITE_LINE;
    792   unsigned IOCTL_SOUND_MIXER_WRITE_LINE1 = SOUND_MIXER_WRITE_LINE1;
    793   unsigned IOCTL_SOUND_MIXER_WRITE_LINE2 = SOUND_MIXER_WRITE_LINE2;
    794   unsigned IOCTL_SOUND_MIXER_WRITE_LINE3 = SOUND_MIXER_WRITE_LINE3;
    795   unsigned IOCTL_SOUND_MIXER_WRITE_LOUD = SOUND_MIXER_WRITE_LOUD;
    796   unsigned IOCTL_SOUND_MIXER_WRITE_MIC = SOUND_MIXER_WRITE_MIC;
    797   unsigned IOCTL_SOUND_MIXER_WRITE_MUTE = SOUND_MIXER_WRITE_MUTE;
    798   unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN = SOUND_MIXER_WRITE_OGAIN;
    799   unsigned IOCTL_SOUND_MIXER_WRITE_PCM = SOUND_MIXER_WRITE_PCM;
    800   unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV = SOUND_MIXER_WRITE_RECLEV;
    801   unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC = SOUND_MIXER_WRITE_RECSRC;
    802   unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER = SOUND_MIXER_WRITE_SPEAKER;
    803   unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH = SOUND_MIXER_WRITE_SYNTH;
    804   unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE = SOUND_MIXER_WRITE_TREBLE;
    805   unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME = SOUND_MIXER_WRITE_VOLUME;
    806   unsigned IOCTL_VT_ACTIVATE = VT_ACTIVATE;
    807   unsigned IOCTL_VT_GETMODE = VT_GETMODE;
    808   unsigned IOCTL_VT_OPENQRY = VT_OPENQRY;
    809   unsigned IOCTL_VT_RELDISP = VT_RELDISP;
    810   unsigned IOCTL_VT_SETMODE = VT_SETMODE;
    811   unsigned IOCTL_VT_WAITACTIVE = VT_WAITACTIVE;
    812 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    813 
    814 #if SANITIZER_LINUX && !SANITIZER_ANDROID
    815   unsigned IOCTL_CYGETDEFTHRESH = CYGETDEFTHRESH;
    816   unsigned IOCTL_CYGETDEFTIMEOUT = CYGETDEFTIMEOUT;
    817   unsigned IOCTL_CYGETMON = CYGETMON;
    818   unsigned IOCTL_CYGETTHRESH = CYGETTHRESH;
    819   unsigned IOCTL_CYGETTIMEOUT = CYGETTIMEOUT;
    820   unsigned IOCTL_CYSETDEFTHRESH = CYSETDEFTHRESH;
    821   unsigned IOCTL_CYSETDEFTIMEOUT = CYSETDEFTIMEOUT;
    822   unsigned IOCTL_CYSETTHRESH = CYSETTHRESH;
    823   unsigned IOCTL_CYSETTIMEOUT = CYSETTIMEOUT;
    824   unsigned IOCTL_EQL_EMANCIPATE = EQL_EMANCIPATE;
    825   unsigned IOCTL_EQL_ENSLAVE = EQL_ENSLAVE;
    826   unsigned IOCTL_EQL_GETMASTRCFG = EQL_GETMASTRCFG;
    827   unsigned IOCTL_EQL_GETSLAVECFG = EQL_GETSLAVECFG;
    828   unsigned IOCTL_EQL_SETMASTRCFG = EQL_SETMASTRCFG;
    829   unsigned IOCTL_EQL_SETSLAVECFG = EQL_SETSLAVECFG;
    830 #if EV_VERSION > (0x010000)
    831   unsigned IOCTL_EVIOCGKEYCODE_V2 = EVIOCGKEYCODE_V2;
    832   unsigned IOCTL_EVIOCGPROP = EVIOCGPROP(0);
    833   unsigned IOCTL_EVIOCSKEYCODE_V2 = EVIOCSKEYCODE_V2;
    834 #else
    835   unsigned IOCTL_EVIOCGKEYCODE_V2 = IOCTL_NOT_PRESENT;
    836   unsigned IOCTL_EVIOCGPROP = IOCTL_NOT_PRESENT;
    837   unsigned IOCTL_EVIOCSKEYCODE_V2 = IOCTL_NOT_PRESENT;
    838 #endif
    839   unsigned IOCTL_FS_IOC_GETFLAGS = FS_IOC_GETFLAGS;
    840   unsigned IOCTL_FS_IOC_GETVERSION = FS_IOC_GETVERSION;
    841   unsigned IOCTL_FS_IOC_SETFLAGS = FS_IOC_SETFLAGS;
    842   unsigned IOCTL_FS_IOC_SETVERSION = FS_IOC_SETVERSION;
    843   unsigned IOCTL_GIO_CMAP = GIO_CMAP;
    844   unsigned IOCTL_GIO_FONT = GIO_FONT;
    845   unsigned IOCTL_GIO_UNIMAP = GIO_UNIMAP;
    846   unsigned IOCTL_GIO_UNISCRNMAP = GIO_UNISCRNMAP;
    847   unsigned IOCTL_KDADDIO = KDADDIO;
    848   unsigned IOCTL_KDDELIO = KDDELIO;
    849   unsigned IOCTL_KDGETKEYCODE = KDGETKEYCODE;
    850   unsigned IOCTL_KDGKBDIACR = KDGKBDIACR;
    851   unsigned IOCTL_KDGKBENT = KDGKBENT;
    852   unsigned IOCTL_KDGKBLED = KDGKBLED;
    853   unsigned IOCTL_KDGKBMETA = KDGKBMETA;
    854   unsigned IOCTL_KDGKBSENT = KDGKBSENT;
    855   unsigned IOCTL_KDMAPDISP = KDMAPDISP;
    856   unsigned IOCTL_KDSETKEYCODE = KDSETKEYCODE;
    857   unsigned IOCTL_KDSIGACCEPT = KDSIGACCEPT;
    858   unsigned IOCTL_KDSKBDIACR = KDSKBDIACR;
    859   unsigned IOCTL_KDSKBENT = KDSKBENT;
    860   unsigned IOCTL_KDSKBLED = KDSKBLED;
    861   unsigned IOCTL_KDSKBMETA = KDSKBMETA;
    862   unsigned IOCTL_KDSKBSENT = KDSKBSENT;
    863   unsigned IOCTL_KDUNMAPDISP = KDUNMAPDISP;
    864   unsigned IOCTL_LPABORT = LPABORT;
    865   unsigned IOCTL_LPABORTOPEN = LPABORTOPEN;
    866   unsigned IOCTL_LPCAREFUL = LPCAREFUL;
    867   unsigned IOCTL_LPCHAR = LPCHAR;
    868   unsigned IOCTL_LPGETIRQ = LPGETIRQ;
    869   unsigned IOCTL_LPGETSTATUS = LPGETSTATUS;
    870   unsigned IOCTL_LPRESET = LPRESET;
    871   unsigned IOCTL_LPSETIRQ = LPSETIRQ;
    872   unsigned IOCTL_LPTIME = LPTIME;
    873   unsigned IOCTL_LPWAIT = LPWAIT;
    874   unsigned IOCTL_MTIOCGETCONFIG = MTIOCGETCONFIG;
    875   unsigned IOCTL_MTIOCSETCONFIG = MTIOCSETCONFIG;
    876   unsigned IOCTL_PIO_CMAP = PIO_CMAP;
    877   unsigned IOCTL_PIO_FONT = PIO_FONT;
    878   unsigned IOCTL_PIO_UNIMAP = PIO_UNIMAP;
    879   unsigned IOCTL_PIO_UNIMAPCLR = PIO_UNIMAPCLR;
    880   unsigned IOCTL_PIO_UNISCRNMAP = PIO_UNISCRNMAP;
    881   unsigned IOCTL_SCSI_IOCTL_GET_IDLUN = SCSI_IOCTL_GET_IDLUN;
    882   unsigned IOCTL_SCSI_IOCTL_PROBE_HOST = SCSI_IOCTL_PROBE_HOST;
    883   unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE = SCSI_IOCTL_TAGGED_DISABLE;
    884   unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE = SCSI_IOCTL_TAGGED_ENABLE;
    885   unsigned IOCTL_SIOCAIPXITFCRT = SIOCAIPXITFCRT;
    886   unsigned IOCTL_SIOCAIPXPRISLT = SIOCAIPXPRISLT;
    887   unsigned IOCTL_SIOCAX25ADDUID = SIOCAX25ADDUID;
    888   unsigned IOCTL_SIOCAX25DELUID = SIOCAX25DELUID;
    889   unsigned IOCTL_SIOCAX25GETPARMS = SIOCAX25GETPARMS;
    890   unsigned IOCTL_SIOCAX25GETUID = SIOCAX25GETUID;
    891   unsigned IOCTL_SIOCAX25NOUID = SIOCAX25NOUID;
    892   unsigned IOCTL_SIOCAX25SETPARMS = SIOCAX25SETPARMS;
    893   unsigned IOCTL_SIOCDEVPLIP = SIOCDEVPLIP;
    894   unsigned IOCTL_SIOCIPXCFGDATA = SIOCIPXCFGDATA;
    895   unsigned IOCTL_SIOCNRDECOBS = SIOCNRDECOBS;
    896   unsigned IOCTL_SIOCNRGETPARMS = SIOCNRGETPARMS;
    897   unsigned IOCTL_SIOCNRRTCTL = SIOCNRRTCTL;
    898   unsigned IOCTL_SIOCNRSETPARMS = SIOCNRSETPARMS;
    899   unsigned IOCTL_TIOCGSERIAL = TIOCGSERIAL;
    900   unsigned IOCTL_TIOCSERGETMULTI = TIOCSERGETMULTI;
    901   unsigned IOCTL_TIOCSERSETMULTI = TIOCSERSETMULTI;
    902   unsigned IOCTL_TIOCSSERIAL = TIOCSSERIAL;
    903 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
    904 
    905 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    906   unsigned IOCTL_GIO_SCRNMAP = GIO_SCRNMAP;
    907   unsigned IOCTL_KDDISABIO = KDDISABIO;
    908   unsigned IOCTL_KDENABIO = KDENABIO;
    909   unsigned IOCTL_KDGETLED = KDGETLED;
    910   unsigned IOCTL_KDGETMODE = KDGETMODE;
    911   unsigned IOCTL_KDGKBMODE = KDGKBMODE;
    912   unsigned IOCTL_KDGKBTYPE = KDGKBTYPE;
    913   unsigned IOCTL_KDMKTONE = KDMKTONE;
    914   unsigned IOCTL_KDSETLED = KDSETLED;
    915   unsigned IOCTL_KDSETMODE = KDSETMODE;
    916   unsigned IOCTL_KDSKBMODE = KDSKBMODE;
    917   unsigned IOCTL_KIOCSOUND = KIOCSOUND;
    918   unsigned IOCTL_PIO_SCRNMAP = PIO_SCRNMAP;
    919   unsigned IOCTL_SNDCTL_DSP_GETISPACE = SNDCTL_DSP_GETISPACE;
    920   unsigned IOCTL_SNDCTL_DSP_GETOSPACE = SNDCTL_DSP_GETOSPACE;
    921 #endif // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    922 
    923   const int errno_EINVAL = EINVAL;
    924 // EOWNERDEAD is not present in some older platforms.
    925 #if defined(EOWNERDEAD)
    926   const int errno_EOWNERDEAD = EOWNERDEAD;
    927 #else
    928   const int errno_EOWNERDEAD = -1;
    929 #endif
    930 
    931   const int si_SEGV_MAPERR = SEGV_MAPERR;
    932   const int si_SEGV_ACCERR = SEGV_ACCERR;
    933 } // namespace __sanitizer
    934 
    935 COMPILER_CHECK(sizeof(__sanitizer_pthread_attr_t) >= sizeof(pthread_attr_t));
    936 
    937 COMPILER_CHECK(sizeof(socklen_t) == sizeof(unsigned));
    938 CHECK_TYPE_SIZE(pthread_key_t);
    939 
    940 #if SANITIZER_LINUX
    941 // FIXME: We define those on Linux and Mac, but only check on Linux.
    942 COMPILER_CHECK(IOC_NRBITS == _IOC_NRBITS);
    943 COMPILER_CHECK(IOC_TYPEBITS == _IOC_TYPEBITS);
    944 COMPILER_CHECK(IOC_SIZEBITS == _IOC_SIZEBITS);
    945 COMPILER_CHECK(IOC_DIRBITS == _IOC_DIRBITS);
    946 COMPILER_CHECK(IOC_NRMASK == _IOC_NRMASK);
    947 COMPILER_CHECK(IOC_TYPEMASK == _IOC_TYPEMASK);
    948 COMPILER_CHECK(IOC_SIZEMASK == _IOC_SIZEMASK);
    949 COMPILER_CHECK(IOC_DIRMASK == _IOC_DIRMASK);
    950 COMPILER_CHECK(IOC_NRSHIFT == _IOC_NRSHIFT);
    951 COMPILER_CHECK(IOC_TYPESHIFT == _IOC_TYPESHIFT);
    952 COMPILER_CHECK(IOC_SIZESHIFT == _IOC_SIZESHIFT);
    953 COMPILER_CHECK(IOC_DIRSHIFT == _IOC_DIRSHIFT);
    954 COMPILER_CHECK(IOC_NONE == _IOC_NONE);
    955 COMPILER_CHECK(IOC_WRITE == _IOC_WRITE);
    956 COMPILER_CHECK(IOC_READ == _IOC_READ);
    957 COMPILER_CHECK(EVIOC_ABS_MAX == ABS_MAX);
    958 COMPILER_CHECK(EVIOC_EV_MAX == EV_MAX);
    959 COMPILER_CHECK(IOC_SIZE(0x12345678) == _IOC_SIZE(0x12345678));
    960 COMPILER_CHECK(IOC_DIR(0x12345678) == _IOC_DIR(0x12345678));
    961 COMPILER_CHECK(IOC_NR(0x12345678) == _IOC_NR(0x12345678));
    962 COMPILER_CHECK(IOC_TYPE(0x12345678) == _IOC_TYPE(0x12345678));
    963 #endif // SANITIZER_LINUX
    964 
    965 #if SANITIZER_LINUX || SANITIZER_FREEBSD
    966 // There are more undocumented fields in dl_phdr_info that we are not interested
    967 // in.
    968 COMPILER_CHECK(sizeof(__sanitizer_dl_phdr_info) <= sizeof(dl_phdr_info));
    969 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_addr);
    970 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_name);
    971 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phdr);
    972 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phnum);
    973 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
    974 
    975 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
    976 CHECK_TYPE_SIZE(glob_t);
    977 CHECK_SIZE_AND_OFFSET(glob_t, gl_pathc);
    978 CHECK_SIZE_AND_OFFSET(glob_t, gl_pathv);
    979 CHECK_SIZE_AND_OFFSET(glob_t, gl_offs);
    980 CHECK_SIZE_AND_OFFSET(glob_t, gl_flags);
    981 CHECK_SIZE_AND_OFFSET(glob_t, gl_closedir);
    982 CHECK_SIZE_AND_OFFSET(glob_t, gl_readdir);
    983 CHECK_SIZE_AND_OFFSET(glob_t, gl_opendir);
    984 CHECK_SIZE_AND_OFFSET(glob_t, gl_lstat);
    985 CHECK_SIZE_AND_OFFSET(glob_t, gl_stat);
    986 #endif
    987 
    988 CHECK_TYPE_SIZE(addrinfo);
    989 CHECK_SIZE_AND_OFFSET(addrinfo, ai_flags);
    990 CHECK_SIZE_AND_OFFSET(addrinfo, ai_family);
    991 CHECK_SIZE_AND_OFFSET(addrinfo, ai_socktype);
    992 CHECK_SIZE_AND_OFFSET(addrinfo, ai_protocol);
    993 CHECK_SIZE_AND_OFFSET(addrinfo, ai_protocol);
    994 CHECK_SIZE_AND_OFFSET(addrinfo, ai_addrlen);
    995 CHECK_SIZE_AND_OFFSET(addrinfo, ai_canonname);
    996 CHECK_SIZE_AND_OFFSET(addrinfo, ai_addr);
    997 
    998 CHECK_TYPE_SIZE(hostent);
    999 CHECK_SIZE_AND_OFFSET(hostent, h_name);
   1000 CHECK_SIZE_AND_OFFSET(hostent, h_aliases);
   1001 CHECK_SIZE_AND_OFFSET(hostent, h_addrtype);
   1002 CHECK_SIZE_AND_OFFSET(hostent, h_length);
   1003 CHECK_SIZE_AND_OFFSET(hostent, h_addr_list);
   1004 
   1005 CHECK_TYPE_SIZE(iovec);
   1006 CHECK_SIZE_AND_OFFSET(iovec, iov_base);
   1007 CHECK_SIZE_AND_OFFSET(iovec, iov_len);
   1008 
   1009 CHECK_TYPE_SIZE(msghdr);
   1010 CHECK_SIZE_AND_OFFSET(msghdr, msg_name);
   1011 CHECK_SIZE_AND_OFFSET(msghdr, msg_namelen);
   1012 CHECK_SIZE_AND_OFFSET(msghdr, msg_iov);
   1013 CHECK_SIZE_AND_OFFSET(msghdr, msg_iovlen);
   1014 CHECK_SIZE_AND_OFFSET(msghdr, msg_control);
   1015 CHECK_SIZE_AND_OFFSET(msghdr, msg_controllen);
   1016 CHECK_SIZE_AND_OFFSET(msghdr, msg_flags);
   1017 
   1018 CHECK_TYPE_SIZE(cmsghdr);
   1019 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_len);
   1020 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_level);
   1021 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_type);
   1022 
   1023 COMPILER_CHECK(sizeof(__sanitizer_dirent) <= sizeof(dirent));
   1024 CHECK_SIZE_AND_OFFSET(dirent, d_ino);
   1025 #if SANITIZER_MAC
   1026 CHECK_SIZE_AND_OFFSET(dirent, d_seekoff);
   1027 #elif SANITIZER_FREEBSD
   1028 // There is no 'd_off' field on FreeBSD.
   1029 #else
   1030 CHECK_SIZE_AND_OFFSET(dirent, d_off);
   1031 #endif
   1032 CHECK_SIZE_AND_OFFSET(dirent, d_reclen);
   1033 
   1034 #if SANITIZER_LINUX && !SANITIZER_ANDROID
   1035 COMPILER_CHECK(sizeof(__sanitizer_dirent64) <= sizeof(dirent64));
   1036 CHECK_SIZE_AND_OFFSET(dirent64, d_ino);
   1037 CHECK_SIZE_AND_OFFSET(dirent64, d_off);
   1038 CHECK_SIZE_AND_OFFSET(dirent64, d_reclen);
   1039 #endif
   1040 
   1041 CHECK_TYPE_SIZE(ifconf);
   1042 CHECK_SIZE_AND_OFFSET(ifconf, ifc_len);
   1043 CHECK_SIZE_AND_OFFSET(ifconf, ifc_ifcu);
   1044 
   1045 CHECK_TYPE_SIZE(pollfd);
   1046 CHECK_SIZE_AND_OFFSET(pollfd, fd);
   1047 CHECK_SIZE_AND_OFFSET(pollfd, events);
   1048 CHECK_SIZE_AND_OFFSET(pollfd, revents);
   1049 
   1050 CHECK_TYPE_SIZE(nfds_t);
   1051 
   1052 CHECK_TYPE_SIZE(sigset_t);
   1053 
   1054 COMPILER_CHECK(sizeof(__sanitizer_sigaction) == sizeof(struct sigaction));
   1055 // Can't write checks for sa_handler and sa_sigaction due to them being
   1056 // preprocessor macros.
   1057 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_mask);
   1058 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_flags);
   1059 #if SANITIZER_LINUX
   1060 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_restorer);
   1061 #endif
   1062 
   1063 #if SANITIZER_LINUX
   1064 CHECK_TYPE_SIZE(__sysctl_args);
   1065 CHECK_SIZE_AND_OFFSET(__sysctl_args, name);
   1066 CHECK_SIZE_AND_OFFSET(__sysctl_args, nlen);
   1067 CHECK_SIZE_AND_OFFSET(__sysctl_args, oldval);
   1068 CHECK_SIZE_AND_OFFSET(__sysctl_args, oldlenp);
   1069 CHECK_SIZE_AND_OFFSET(__sysctl_args, newval);
   1070 CHECK_SIZE_AND_OFFSET(__sysctl_args, newlen);
   1071 
   1072 CHECK_TYPE_SIZE(__kernel_uid_t);
   1073 CHECK_TYPE_SIZE(__kernel_gid_t);
   1074 
   1075 #if SANITIZER_USES_UID16_SYSCALLS
   1076 CHECK_TYPE_SIZE(__kernel_old_uid_t);
   1077 CHECK_TYPE_SIZE(__kernel_old_gid_t);
   1078 #endif
   1079 
   1080 CHECK_TYPE_SIZE(__kernel_off_t);
   1081 CHECK_TYPE_SIZE(__kernel_loff_t);
   1082 CHECK_TYPE_SIZE(__kernel_fd_set);
   1083 #endif
   1084 
   1085 #if !SANITIZER_ANDROID
   1086 CHECK_TYPE_SIZE(wordexp_t);
   1087 CHECK_SIZE_AND_OFFSET(wordexp_t, we_wordc);
   1088 CHECK_SIZE_AND_OFFSET(wordexp_t, we_wordv);
   1089 CHECK_SIZE_AND_OFFSET(wordexp_t, we_offs);
   1090 #endif
   1091 
   1092 CHECK_TYPE_SIZE(tm);
   1093 CHECK_SIZE_AND_OFFSET(tm, tm_sec);
   1094 CHECK_SIZE_AND_OFFSET(tm, tm_min);
   1095 CHECK_SIZE_AND_OFFSET(tm, tm_hour);
   1096 CHECK_SIZE_AND_OFFSET(tm, tm_mday);
   1097 CHECK_SIZE_AND_OFFSET(tm, tm_mon);
   1098 CHECK_SIZE_AND_OFFSET(tm, tm_year);
   1099 CHECK_SIZE_AND_OFFSET(tm, tm_wday);
   1100 CHECK_SIZE_AND_OFFSET(tm, tm_yday);
   1101 CHECK_SIZE_AND_OFFSET(tm, tm_isdst);
   1102 CHECK_SIZE_AND_OFFSET(tm, tm_gmtoff);
   1103 CHECK_SIZE_AND_OFFSET(tm, tm_zone);
   1104 
   1105 #if SANITIZER_LINUX
   1106 CHECK_TYPE_SIZE(mntent);
   1107 CHECK_SIZE_AND_OFFSET(mntent, mnt_fsname);
   1108 CHECK_SIZE_AND_OFFSET(mntent, mnt_dir);
   1109 CHECK_SIZE_AND_OFFSET(mntent, mnt_type);
   1110 CHECK_SIZE_AND_OFFSET(mntent, mnt_opts);
   1111 CHECK_SIZE_AND_OFFSET(mntent, mnt_freq);
   1112 CHECK_SIZE_AND_OFFSET(mntent, mnt_passno);
   1113 #endif
   1114 
   1115 CHECK_TYPE_SIZE(ether_addr);
   1116 
   1117 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
   1118 CHECK_TYPE_SIZE(ipc_perm);
   1119 # if SANITIZER_FREEBSD
   1120 CHECK_SIZE_AND_OFFSET(ipc_perm, key);
   1121 CHECK_SIZE_AND_OFFSET(ipc_perm, seq);
   1122 # else
   1123 CHECK_SIZE_AND_OFFSET(ipc_perm, __key);
   1124 CHECK_SIZE_AND_OFFSET(ipc_perm, __seq);
   1125 # endif
   1126 CHECK_SIZE_AND_OFFSET(ipc_perm, uid);
   1127 CHECK_SIZE_AND_OFFSET(ipc_perm, gid);
   1128 CHECK_SIZE_AND_OFFSET(ipc_perm, cuid);
   1129 CHECK_SIZE_AND_OFFSET(ipc_perm, cgid);
   1130 #ifndef __GLIBC_PREREQ
   1131 #define __GLIBC_PREREQ(x, y) 0
   1132 #endif
   1133 #if !defined(__aarch64__) || !SANITIZER_LINUX || __GLIBC_PREREQ (2, 21)
   1134 /* On aarch64 glibc 2.20 and earlier provided incorrect mode field.  */
   1135 CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
   1136 #endif
   1137 
   1138 CHECK_TYPE_SIZE(shmid_ds);
   1139 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_perm);
   1140 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_segsz);
   1141 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_atime);
   1142 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_dtime);
   1143 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_ctime);
   1144 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_cpid);
   1145 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_lpid);
   1146 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_nattch);
   1147 #endif
   1148 
   1149 CHECK_TYPE_SIZE(clock_t);
   1150 
   1151 #if SANITIZER_LINUX
   1152 CHECK_TYPE_SIZE(clockid_t);
   1153 #endif
   1154 
   1155 #if !SANITIZER_ANDROID
   1156 CHECK_TYPE_SIZE(ifaddrs);
   1157 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_next);
   1158 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_name);
   1159 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_addr);
   1160 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_netmask);
   1161 #if SANITIZER_LINUX || SANITIZER_FREEBSD
   1162 // Compare against the union, because we can't reach into the union in a
   1163 // compliant way.
   1164 #ifdef ifa_dstaddr
   1165 #undef ifa_dstaddr
   1166 #endif
   1167 # if SANITIZER_FREEBSD
   1168 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_dstaddr);
   1169 # else
   1170 COMPILER_CHECK(sizeof(((__sanitizer_ifaddrs *)nullptr)->ifa_dstaddr) ==
   1171                sizeof(((ifaddrs *)nullptr)->ifa_ifu));
   1172 COMPILER_CHECK(offsetof(__sanitizer_ifaddrs, ifa_dstaddr) ==
   1173                offsetof(ifaddrs, ifa_ifu));
   1174 # endif // SANITIZER_FREEBSD
   1175 #else
   1176 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_dstaddr);
   1177 #endif // SANITIZER_LINUX
   1178 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_data);
   1179 #endif
   1180 
   1181 #if SANITIZER_LINUX
   1182 COMPILER_CHECK(sizeof(__sanitizer_mallinfo) == sizeof(struct mallinfo));
   1183 #endif
   1184 
   1185 #if !SANITIZER_ANDROID
   1186 CHECK_TYPE_SIZE(timeb);
   1187 CHECK_SIZE_AND_OFFSET(timeb, time);
   1188 CHECK_SIZE_AND_OFFSET(timeb, millitm);
   1189 CHECK_SIZE_AND_OFFSET(timeb, timezone);
   1190 CHECK_SIZE_AND_OFFSET(timeb, dstflag);
   1191 #endif
   1192 
   1193 CHECK_TYPE_SIZE(passwd);
   1194 CHECK_SIZE_AND_OFFSET(passwd, pw_name);
   1195 CHECK_SIZE_AND_OFFSET(passwd, pw_passwd);
   1196 CHECK_SIZE_AND_OFFSET(passwd, pw_uid);
   1197 CHECK_SIZE_AND_OFFSET(passwd, pw_gid);
   1198 CHECK_SIZE_AND_OFFSET(passwd, pw_dir);
   1199 CHECK_SIZE_AND_OFFSET(passwd, pw_shell);
   1200 
   1201 #if !SANITIZER_ANDROID
   1202 CHECK_SIZE_AND_OFFSET(passwd, pw_gecos);
   1203 #endif
   1204 
   1205 #if SANITIZER_MAC
   1206 CHECK_SIZE_AND_OFFSET(passwd, pw_change);
   1207 CHECK_SIZE_AND_OFFSET(passwd, pw_expire);
   1208 CHECK_SIZE_AND_OFFSET(passwd, pw_class);
   1209 #endif
   1210 
   1211 
   1212 CHECK_TYPE_SIZE(group);
   1213 CHECK_SIZE_AND_OFFSET(group, gr_name);
   1214 CHECK_SIZE_AND_OFFSET(group, gr_passwd);
   1215 CHECK_SIZE_AND_OFFSET(group, gr_gid);
   1216 CHECK_SIZE_AND_OFFSET(group, gr_mem);
   1217 
   1218 #if HAVE_RPC_XDR_H || HAVE_TIRPC_RPC_XDR_H
   1219 CHECK_TYPE_SIZE(XDR);
   1220 CHECK_SIZE_AND_OFFSET(XDR, x_op);
   1221 CHECK_SIZE_AND_OFFSET(XDR, x_ops);
   1222 CHECK_SIZE_AND_OFFSET(XDR, x_public);
   1223 CHECK_SIZE_AND_OFFSET(XDR, x_private);
   1224 CHECK_SIZE_AND_OFFSET(XDR, x_base);
   1225 CHECK_SIZE_AND_OFFSET(XDR, x_handy);
   1226 COMPILER_CHECK(__sanitizer_XDR_ENCODE == XDR_ENCODE);
   1227 COMPILER_CHECK(__sanitizer_XDR_DECODE == XDR_DECODE);
   1228 COMPILER_CHECK(__sanitizer_XDR_FREE == XDR_FREE);
   1229 #endif
   1230 
   1231 #if SANITIZER_LINUX && !SANITIZER_ANDROID
   1232 COMPILER_CHECK(sizeof(__sanitizer_FILE) <= sizeof(FILE));
   1233 CHECK_SIZE_AND_OFFSET(FILE, _flags);
   1234 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_ptr);
   1235 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_end);
   1236 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_base);
   1237 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_ptr);
   1238 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_end);
   1239 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_base);
   1240 CHECK_SIZE_AND_OFFSET(FILE, _IO_buf_base);
   1241 CHECK_SIZE_AND_OFFSET(FILE, _IO_buf_end);
   1242 CHECK_SIZE_AND_OFFSET(FILE, _IO_save_base);
   1243 CHECK_SIZE_AND_OFFSET(FILE, _IO_backup_base);
   1244 CHECK_SIZE_AND_OFFSET(FILE, _IO_save_end);
   1245 CHECK_SIZE_AND_OFFSET(FILE, _markers);
   1246 CHECK_SIZE_AND_OFFSET(FILE, _chain);
   1247 CHECK_SIZE_AND_OFFSET(FILE, _fileno);
   1248 #endif
   1249 
   1250 #if SANITIZER_LINUX && !SANITIZER_ANDROID
   1251 COMPILER_CHECK(sizeof(__sanitizer__obstack_chunk) <= sizeof(_obstack_chunk));
   1252 CHECK_SIZE_AND_OFFSET(_obstack_chunk, limit);
   1253 CHECK_SIZE_AND_OFFSET(_obstack_chunk, prev);
   1254 CHECK_TYPE_SIZE(obstack);
   1255 CHECK_SIZE_AND_OFFSET(obstack, chunk_size);
   1256 CHECK_SIZE_AND_OFFSET(obstack, chunk);
   1257 CHECK_SIZE_AND_OFFSET(obstack, object_base);
   1258 CHECK_SIZE_AND_OFFSET(obstack, next_free);
   1259 
   1260 CHECK_TYPE_SIZE(cookie_io_functions_t);
   1261 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, read);
   1262 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, write);
   1263 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, seek);
   1264 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, close);
   1265 #endif
   1266 
   1267 #if SANITIZER_LINUX || SANITIZER_FREEBSD
   1268 CHECK_TYPE_SIZE(sem_t);
   1269 #endif
   1270 
   1271 #if SANITIZER_LINUX && defined(__arm__)
   1272 COMPILER_CHECK(ARM_VFPREGS_SIZE == ARM_VFPREGS_SIZE_ASAN);
   1273 #endif
   1274 
   1275 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_MAC
   1276