1 //===-- sanitizer_platform_limits_posix.cpp -------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file is a part of Sanitizer common code.
10 //
11 // Sizes and layouts of platform-specific POSIX data structures.
12 //===----------------------------------------------------------------------===//
13 
14 #if defined(__linux__) || defined(__APPLE__)
15 // Tests in this file assume that off_t-dependent data structures match the
16 // libc ABI. For example, struct dirent here is what readdir() function (as
17 // exported from libc) returns, and not the user-facing "dirent", which
18 // depends on _FILE_OFFSET_BITS setting.
19 // To get this "true" dirent definition, we undefine _FILE_OFFSET_BITS below.
20 #undef _FILE_OFFSET_BITS
21 #endif
22 
23 // Must go after undef _FILE_OFFSET_BITS.
24 #include "sanitizer_platform.h"
25 
26 #if SANITIZER_LINUX || SANITIZER_MAC
27 // Must go after undef _FILE_OFFSET_BITS.
28 #include "sanitizer_glibc_version.h"
29 
30 #include <arpa/inet.h>
31 #include <dirent.h>
32 #include <grp.h>
33 #include <limits.h>
34 #include <net/if.h>
35 #include <netdb.h>
36 #include <poll.h>
37 #include <pthread.h>
38 #include <pwd.h>
39 #include <signal.h>
40 #include <stddef.h>
41 #include <stdio.h>
42 #include <sys/mman.h>
43 #include <sys/resource.h>
44 #include <sys/socket.h>
45 #include <sys/stat.h>
46 #include <sys/time.h>
47 #include <sys/times.h>
48 #include <sys/types.h>
49 #include <sys/utsname.h>
50 #include <termios.h>
51 #include <time.h>
52 #include <wchar.h>
53 #include <regex.h>
54 #if !SANITIZER_MAC
55 #include <utmp.h>
56 #endif
57 
58 #if !SANITIZER_IOS
59 #include <net/route.h>
60 #endif
61 
62 #if !SANITIZER_ANDROID
63 #include <sys/mount.h>
64 #include <sys/timeb.h>
65 #include <utmpx.h>
66 #endif
67 
68 #if SANITIZER_LINUX
69 #include <malloc.h>
70 #include <mntent.h>
71 #include <netinet/ether.h>
72 #include <sys/sysinfo.h>
73 #include <sys/vt.h>
74 #include <linux/cdrom.h>
75 #include <linux/fd.h>
76 #include <linux/fs.h>
77 #include <linux/hdreg.h>
78 #include <linux/input.h>
79 #include <linux/ioctl.h>
80 #include <linux/soundcard.h>
81 #include <linux/sysctl.h>
82 #include <linux/utsname.h>
83 #include <linux/posix_types.h>
84 #include <net/if_arp.h>
85 #endif
86 
87 #if SANITIZER_IOS
88 #undef IOC_DIRMASK
89 #endif
90 
91 #if SANITIZER_LINUX
92 # include <utime.h>
93 # include <sys/ptrace.h>
94 #    if defined(__mips64) || defined(__aarch64__) || defined(__arm__) || \
95         defined(__hexagon__) || SANITIZER_RISCV64
96 #      include <asm/ptrace.h>
97 #      ifdef __arm__
98 typedef struct user_fpregs elf_fpregset_t;
99 #   define ARM_VFPREGS_SIZE_ASAN (32 * 8 /*fpregs*/ + 4 /*fpscr*/)
100 #   if !defined(ARM_VFPREGS_SIZE)
101 #     define ARM_VFPREGS_SIZE ARM_VFPREGS_SIZE_ASAN
102 #   endif
103 #  endif
104 # endif
105 # include <semaphore.h>
106 #endif
107 
108 #if !SANITIZER_ANDROID
109 #include <ifaddrs.h>
110 #include <sys/ucontext.h>
111 #include <wordexp.h>
112 #endif
113 
114 #if SANITIZER_LINUX
115 #if SANITIZER_GLIBC
116 #include <fstab.h>
117 #include <net/if_ppp.h>
118 #include <netax25/ax25.h>
119 #include <netipx/ipx.h>
120 #include <netrom/netrom.h>
121 #include <obstack.h>
122 #if HAVE_RPC_XDR_H
123 # include <rpc/xdr.h>
124 #endif
125 #include <scsi/scsi.h>
126 #else
127 #include <linux/if_ppp.h>
128 #include <linux/kd.h>
129 #include <linux/ppp_defs.h>
130 #endif  // SANITIZER_GLIBC
131 
132 #if SANITIZER_ANDROID
133 #include <linux/mtio.h>
134 #else
135 #include <glob.h>
136 #include <mqueue.h>
137 #include <sys/kd.h>
138 #include <sys/mtio.h>
139 #include <sys/shm.h>
140 #include <sys/statvfs.h>
141 #include <sys/timex.h>
142 #if defined(__mips64)
143 # include <sys/procfs.h>
144 #endif
145 #include <sys/user.h>
146 #include <linux/if_eql.h>
147 #include <linux/if_plip.h>
148 #include <linux/lp.h>
149 #include <linux/mroute.h>
150 #include <linux/mroute6.h>
151 #include <linux/scc.h>
152 #include <linux/serial.h>
153 #include <sys/msg.h>
154 #include <sys/ipc.h>
155 #include <crypt.h>
156 #endif  // SANITIZER_ANDROID
157 
158 #include <link.h>
159 #include <sys/vfs.h>
160 #include <sys/epoll.h>
161 #include <linux/capability.h>
162 #else
163 #include <fstab.h>
164 #endif // SANITIZER_LINUX
165 
166 #if SANITIZER_MAC
167 #include <net/ethernet.h>
168 #include <sys/filio.h>
169 #include <sys/sockio.h>
170 #endif
171 
172 // Include these after system headers to avoid name clashes and ambiguities.
173 #  include "sanitizer_common.h"
174 #  include "sanitizer_internal_defs.h"
175 #  include "sanitizer_platform_limits_posix.h"
176 
177 namespace __sanitizer {
178   unsigned struct_utsname_sz = sizeof(struct utsname);
179   unsigned struct_stat_sz = sizeof(struct stat);
180 #if !SANITIZER_IOS && !(SANITIZER_MAC && TARGET_CPU_ARM64)
181   unsigned struct_stat64_sz = sizeof(struct stat64);
182 #endif // !SANITIZER_IOS && !(SANITIZER_MAC && TARGET_CPU_ARM64)
183   unsigned struct_rusage_sz = sizeof(struct rusage);
184   unsigned struct_tm_sz = sizeof(struct tm);
185   unsigned struct_passwd_sz = sizeof(struct passwd);
186   unsigned struct_group_sz = sizeof(struct group);
187   unsigned siginfo_t_sz = sizeof(siginfo_t);
188   unsigned struct_sigaction_sz = sizeof(struct sigaction);
189   unsigned struct_stack_t_sz = sizeof(stack_t);
190   unsigned struct_itimerval_sz = sizeof(struct itimerval);
191   unsigned pthread_t_sz = sizeof(pthread_t);
192   unsigned pthread_mutex_t_sz = sizeof(pthread_mutex_t);
193   unsigned pthread_cond_t_sz = sizeof(pthread_cond_t);
194   unsigned pid_t_sz = sizeof(pid_t);
195   unsigned timeval_sz = sizeof(timeval);
196   unsigned uid_t_sz = sizeof(uid_t);
197   unsigned gid_t_sz = sizeof(gid_t);
198   unsigned mbstate_t_sz = sizeof(mbstate_t);
199   unsigned sigset_t_sz = sizeof(sigset_t);
200   unsigned struct_timezone_sz = sizeof(struct timezone);
201   unsigned struct_tms_sz = sizeof(struct tms);
202   unsigned struct_sigevent_sz = sizeof(struct sigevent);
203   unsigned struct_sched_param_sz = sizeof(struct sched_param);
204   unsigned struct_regex_sz = sizeof(regex_t);
205   unsigned struct_regmatch_sz = sizeof(regmatch_t);
206 
207 #if (SANITIZER_MAC && !TARGET_CPU_ARM64) && !SANITIZER_IOS
208   unsigned struct_statfs64_sz = sizeof(struct statfs64);
209 #endif // (SANITIZER_MAC && !TARGET_CPU_ARM64) && !SANITIZER_IOS
210 
211 #if SANITIZER_GLIBC || SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_MAC
212   unsigned struct_fstab_sz = sizeof(struct fstab);
213 #endif  // SANITIZER_GLIBC || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
214         // SANITIZER_MAC
215 #if !SANITIZER_ANDROID
216   unsigned struct_statfs_sz = sizeof(struct statfs);
217   unsigned struct_sockaddr_sz = sizeof(struct sockaddr);
218 
219   unsigned ucontext_t_sz(void *ctx) {
220 #    if SANITIZER_GLIBC && SANITIZER_X64
221     // See kernel arch/x86/kernel/fpu/signal.c for details.
222     const auto *fpregs = static_cast<ucontext_t *>(ctx)->uc_mcontext.fpregs;
223     // The member names differ across header versions, but the actual layout
224     // is always the same.  So avoid using members, just use arithmetic.
225     const uint32_t *after_xmm =
226         reinterpret_cast<const uint32_t *>(fpregs + 1) - 24;
227     if (after_xmm[12] == FP_XSTATE_MAGIC1)
228       return reinterpret_cast<const char *>(fpregs) + after_xmm[13] -
229              static_cast<const char *>(ctx);
230 #    endif
231     return sizeof(ucontext_t);
232   }
233 #  endif  // !SANITIZER_ANDROID
234 
235 #  if SANITIZER_LINUX
236   unsigned struct_epoll_event_sz = sizeof(struct epoll_event);
237   unsigned struct_sysinfo_sz = sizeof(struct sysinfo);
238   unsigned __user_cap_header_struct_sz =
239       sizeof(struct __user_cap_header_struct);
240   unsigned __user_cap_data_struct_sz = sizeof(struct __user_cap_data_struct);
241   unsigned struct_new_utsname_sz = sizeof(struct new_utsname);
242   unsigned struct_old_utsname_sz = sizeof(struct old_utsname);
243   unsigned struct_oldold_utsname_sz = sizeof(struct oldold_utsname);
244 #endif // SANITIZER_LINUX
245 
246 #if SANITIZER_LINUX
247   unsigned struct_rlimit_sz = sizeof(struct rlimit);
248   unsigned struct_timespec_sz = sizeof(struct timespec);
249   unsigned struct_utimbuf_sz = sizeof(struct utimbuf);
250   unsigned struct_itimerspec_sz = sizeof(struct itimerspec);
251 #endif // SANITIZER_LINUX
252 
253 #if SANITIZER_LINUX && !SANITIZER_ANDROID
254   // Use pre-computed size of struct ustat to avoid <sys/ustat.h> which
255   // has been removed from glibc 2.28.
256 #if defined(__aarch64__) || defined(__s390x__) || defined(__mips64) ||     \
257     defined(__powerpc64__) || defined(__arch64__) || defined(__sparcv9) || \
258     defined(__x86_64__) || SANITIZER_RISCV64
259 #define SIZEOF_STRUCT_USTAT 32
260 #    elif defined(__arm__) || defined(__i386__) || defined(__mips__) ||    \
261         defined(__powerpc__) || defined(__s390__) || defined(__sparc__) || \
262         defined(__hexagon__)
263 #      define SIZEOF_STRUCT_USTAT 20
264 #    else
265 #      error Unknown size of struct ustat
266 #    endif
267   unsigned struct_ustat_sz = SIZEOF_STRUCT_USTAT;
268   unsigned struct_rlimit64_sz = sizeof(struct rlimit64);
269   unsigned struct_statvfs64_sz = sizeof(struct statvfs64);
270   unsigned struct_crypt_data_sz = sizeof(struct crypt_data);
271 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
272 
273 #if SANITIZER_LINUX && !SANITIZER_ANDROID
274   unsigned struct_timex_sz = sizeof(struct timex);
275   unsigned struct_msqid_ds_sz = sizeof(struct msqid_ds);
276   unsigned struct_mq_attr_sz = sizeof(struct mq_attr);
277   unsigned struct_statvfs_sz = sizeof(struct statvfs);
278 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
279 
280   const uptr sig_ign = (uptr)SIG_IGN;
281   const uptr sig_dfl = (uptr)SIG_DFL;
282   const uptr sig_err = (uptr)SIG_ERR;
283   const uptr sa_siginfo = (uptr)SA_SIGINFO;
284 
285 #if SANITIZER_LINUX
286   int e_tabsz = (int)E_TABSZ;
287 #endif
288 
289 
290 #if SANITIZER_LINUX && !SANITIZER_ANDROID
291   unsigned struct_shminfo_sz = sizeof(struct shminfo);
292   unsigned struct_shm_info_sz = sizeof(struct shm_info);
293   int shmctl_ipc_stat = (int)IPC_STAT;
294   int shmctl_ipc_info = (int)IPC_INFO;
295   int shmctl_shm_info = (int)SHM_INFO;
296   int shmctl_shm_stat = (int)SHM_STAT;
297 #endif
298 
299 #if !SANITIZER_MAC && !SANITIZER_FREEBSD
300   unsigned struct_utmp_sz = sizeof(struct utmp);
301 #endif
302 #if !SANITIZER_ANDROID
303   unsigned struct_utmpx_sz = sizeof(struct utmpx);
304 #endif
305 
306   int map_fixed = MAP_FIXED;
307 
308   int af_inet = (int)AF_INET;
309   int af_inet6 = (int)AF_INET6;
310 
311   uptr __sanitizer_in_addr_sz(int af) {
312     if (af == AF_INET)
313       return sizeof(struct in_addr);
314     else if (af == AF_INET6)
315       return sizeof(struct in6_addr);
316     else
317       return 0;
318   }
319 
320 #if SANITIZER_LINUX
321 unsigned struct_ElfW_Phdr_sz = sizeof(ElfW(Phdr));
322 #elif SANITIZER_FREEBSD
323 unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
324 #endif
325 
326 #if SANITIZER_GLIBC
327   int glob_nomatch = GLOB_NOMATCH;
328   int glob_altdirfunc = GLOB_ALTDIRFUNC;
329 #endif
330 
331 #  if !SANITIZER_ANDROID
332   const int wordexp_wrde_dooffs = WRDE_DOOFFS;
333 #  endif  // !SANITIZER_ANDROID
334 
335 #if SANITIZER_LINUX && !SANITIZER_ANDROID &&                               \
336     (defined(__i386) || defined(__x86_64) || defined(__mips64) ||          \
337      defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__) || \
338      defined(__s390__) || SANITIZER_RISCV64)
339 #if defined(__mips64) || defined(__powerpc64__) || defined(__arm__)
340   unsigned struct_user_regs_struct_sz = sizeof(struct pt_regs);
341   unsigned struct_user_fpregs_struct_sz = sizeof(elf_fpregset_t);
342 #elif SANITIZER_RISCV64
343   unsigned struct_user_regs_struct_sz = sizeof(struct user_regs_struct);
344   unsigned struct_user_fpregs_struct_sz = sizeof(struct __riscv_q_ext_state);
345 #elif defined(__aarch64__)
346   unsigned struct_user_regs_struct_sz = sizeof(struct user_pt_regs);
347   unsigned struct_user_fpregs_struct_sz = sizeof(struct user_fpsimd_state);
348 #elif defined(__s390__)
349   unsigned struct_user_regs_struct_sz = sizeof(struct _user_regs_struct);
350   unsigned struct_user_fpregs_struct_sz = sizeof(struct _user_fpregs_struct);
351 #else
352   unsigned struct_user_regs_struct_sz = sizeof(struct user_regs_struct);
353   unsigned struct_user_fpregs_struct_sz = sizeof(struct user_fpregs_struct);
354 #endif // __mips64 || __powerpc64__ || __aarch64__
355 #if defined(__x86_64) || defined(__mips64) || defined(__powerpc64__) || \
356     defined(__aarch64__) || defined(__arm__) || defined(__s390__) ||    \
357     SANITIZER_RISCV64
358   unsigned struct_user_fpxregs_struct_sz = 0;
359 #else
360   unsigned struct_user_fpxregs_struct_sz = sizeof(struct user_fpxregs_struct);
361 #endif // __x86_64 || __mips64 || __powerpc64__ || __aarch64__ || __arm__
362 // || __s390__
363 #ifdef __arm__
364   unsigned struct_user_vfpregs_struct_sz = ARM_VFPREGS_SIZE;
365 #else
366   unsigned struct_user_vfpregs_struct_sz = 0;
367 #endif
368 
369   int ptrace_peektext = PTRACE_PEEKTEXT;
370   int ptrace_peekdata = PTRACE_PEEKDATA;
371   int ptrace_peekuser = PTRACE_PEEKUSER;
372 #if (defined(PTRACE_GETREGS) && defined(PTRACE_SETREGS)) || \
373     (defined(PT_GETREGS) && defined(PT_SETREGS))
374   int ptrace_getregs = PTRACE_GETREGS;
375   int ptrace_setregs = PTRACE_SETREGS;
376 #else
377   int ptrace_getregs = -1;
378   int ptrace_setregs = -1;
379 #endif
380 #if (defined(PTRACE_GETFPREGS) && defined(PTRACE_SETFPREGS)) || \
381     (defined(PT_GETFPREGS) && defined(PT_SETFPREGS))
382   int ptrace_getfpregs = PTRACE_GETFPREGS;
383   int ptrace_setfpregs = PTRACE_SETFPREGS;
384 #else
385   int ptrace_getfpregs = -1;
386   int ptrace_setfpregs = -1;
387 #endif
388 #if (defined(PTRACE_GETFPXREGS) && defined(PTRACE_SETFPXREGS)) || \
389     (defined(PT_GETFPXREGS) && defined(PT_SETFPXREGS))
390   int ptrace_getfpxregs = PTRACE_GETFPXREGS;
391   int ptrace_setfpxregs = PTRACE_SETFPXREGS;
392 #else
393   int ptrace_getfpxregs = -1;
394   int ptrace_setfpxregs = -1;
395 #endif // PTRACE_GETFPXREGS/PTRACE_SETFPXREGS
396 #if defined(PTRACE_GETVFPREGS) && defined(PTRACE_SETVFPREGS)
397   int ptrace_getvfpregs = PTRACE_GETVFPREGS;
398   int ptrace_setvfpregs = PTRACE_SETVFPREGS;
399 #else
400   int ptrace_getvfpregs = -1;
401   int ptrace_setvfpregs = -1;
402 #endif
403   int ptrace_geteventmsg = PTRACE_GETEVENTMSG;
404 #if (defined(PTRACE_GETSIGINFO) && defined(PTRACE_SETSIGINFO)) ||              \
405     (defined(PT_GETSIGINFO) && defined(PT_SETSIGINFO))
406   int ptrace_getsiginfo = PTRACE_GETSIGINFO;
407   int ptrace_setsiginfo = PTRACE_SETSIGINFO;
408 #else
409   int ptrace_getsiginfo = -1;
410   int ptrace_setsiginfo = -1;
411 #endif // PTRACE_GETSIGINFO/PTRACE_SETSIGINFO
412 #if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET)
413   int ptrace_getregset = PTRACE_GETREGSET;
414   int ptrace_setregset = PTRACE_SETREGSET;
415 #else
416   int ptrace_getregset = -1;
417   int ptrace_setregset = -1;
418 #endif // PTRACE_GETREGSET/PTRACE_SETREGSET
419 #endif
420 
421   unsigned path_max = PATH_MAX;
422 
423   // ioctl arguments
424   unsigned struct_ifreq_sz = sizeof(struct ifreq);
425   unsigned struct_termios_sz = sizeof(struct termios);
426   unsigned struct_winsize_sz = sizeof(struct winsize);
427 
428 #if SANITIZER_LINUX
429   unsigned struct_arpreq_sz = sizeof(struct arpreq);
430   unsigned struct_cdrom_msf_sz = sizeof(struct cdrom_msf);
431   unsigned struct_cdrom_multisession_sz = sizeof(struct cdrom_multisession);
432   unsigned struct_cdrom_read_audio_sz = sizeof(struct cdrom_read_audio);
433   unsigned struct_cdrom_subchnl_sz = sizeof(struct cdrom_subchnl);
434   unsigned struct_cdrom_ti_sz = sizeof(struct cdrom_ti);
435   unsigned struct_cdrom_tocentry_sz = sizeof(struct cdrom_tocentry);
436   unsigned struct_cdrom_tochdr_sz = sizeof(struct cdrom_tochdr);
437   unsigned struct_cdrom_volctrl_sz = sizeof(struct cdrom_volctrl);
438   unsigned struct_ff_effect_sz = sizeof(struct ff_effect);
439   unsigned struct_floppy_drive_params_sz = sizeof(struct floppy_drive_params);
440   unsigned struct_floppy_drive_struct_sz = sizeof(struct floppy_drive_struct);
441   unsigned struct_floppy_fdc_state_sz = sizeof(struct floppy_fdc_state);
442   unsigned struct_floppy_max_errors_sz = sizeof(struct floppy_max_errors);
443   unsigned struct_floppy_raw_cmd_sz = sizeof(struct floppy_raw_cmd);
444   unsigned struct_floppy_struct_sz = sizeof(struct floppy_struct);
445   unsigned struct_floppy_write_errors_sz = sizeof(struct floppy_write_errors);
446   unsigned struct_format_descr_sz = sizeof(struct format_descr);
447   unsigned struct_hd_driveid_sz = sizeof(struct hd_driveid);
448   unsigned struct_hd_geometry_sz = sizeof(struct hd_geometry);
449   unsigned struct_input_absinfo_sz = sizeof(struct input_absinfo);
450   unsigned struct_input_id_sz = sizeof(struct input_id);
451   unsigned struct_mtpos_sz = sizeof(struct mtpos);
452   unsigned struct_rtentry_sz = sizeof(struct rtentry);
453 #if SANITIZER_GLIBC || SANITIZER_ANDROID
454   unsigned struct_termio_sz = sizeof(struct termio);
455 #endif
456   unsigned struct_vt_consize_sz = sizeof(struct vt_consize);
457   unsigned struct_vt_sizes_sz = sizeof(struct vt_sizes);
458   unsigned struct_vt_stat_sz = sizeof(struct vt_stat);
459 #endif // SANITIZER_LINUX
460 
461 #if SANITIZER_LINUX
462 #if SOUND_VERSION >= 0x040000
463   unsigned struct_copr_buffer_sz = 0;
464   unsigned struct_copr_debug_buf_sz = 0;
465   unsigned struct_copr_msg_sz = 0;
466 #else
467   unsigned struct_copr_buffer_sz = sizeof(struct copr_buffer);
468   unsigned struct_copr_debug_buf_sz = sizeof(struct copr_debug_buf);
469   unsigned struct_copr_msg_sz = sizeof(struct copr_msg);
470 #endif
471   unsigned struct_midi_info_sz = sizeof(struct midi_info);
472   unsigned struct_mtget_sz = sizeof(struct mtget);
473   unsigned struct_mtop_sz = sizeof(struct mtop);
474   unsigned struct_sbi_instrument_sz = sizeof(struct sbi_instrument);
475   unsigned struct_seq_event_rec_sz = sizeof(struct seq_event_rec);
476   unsigned struct_synth_info_sz = sizeof(struct synth_info);
477   unsigned struct_vt_mode_sz = sizeof(struct vt_mode);
478 #endif // SANITIZER_LINUX
479 
480 #if SANITIZER_GLIBC
481   unsigned struct_ax25_parms_struct_sz = sizeof(struct ax25_parms_struct);
482 #if EV_VERSION > (0x010000)
483   unsigned struct_input_keymap_entry_sz = sizeof(struct input_keymap_entry);
484 #else
485   unsigned struct_input_keymap_entry_sz = 0;
486 #endif
487   unsigned struct_ipx_config_data_sz = sizeof(struct ipx_config_data);
488   unsigned struct_kbdiacrs_sz = sizeof(struct kbdiacrs);
489   unsigned struct_kbentry_sz = sizeof(struct kbentry);
490   unsigned struct_kbkeycode_sz = sizeof(struct kbkeycode);
491   unsigned struct_kbsentry_sz = sizeof(struct kbsentry);
492   unsigned struct_mtconfiginfo_sz = sizeof(struct mtconfiginfo);
493   unsigned struct_nr_parms_struct_sz = sizeof(struct nr_parms_struct);
494   unsigned struct_scc_modem_sz = sizeof(struct scc_modem);
495   unsigned struct_scc_stat_sz = sizeof(struct scc_stat);
496   unsigned struct_serial_multiport_struct_sz
497       = sizeof(struct serial_multiport_struct);
498   unsigned struct_serial_struct_sz = sizeof(struct serial_struct);
499   unsigned struct_sockaddr_ax25_sz = sizeof(struct sockaddr_ax25);
500   unsigned struct_unimapdesc_sz = sizeof(struct unimapdesc);
501   unsigned struct_unimapinit_sz = sizeof(struct unimapinit);
502 
503   unsigned struct_audio_buf_info_sz = sizeof(struct audio_buf_info);
504   unsigned struct_ppp_stats_sz = sizeof(struct ppp_stats);
505 #endif  // SANITIZER_GLIBC
506 
507 #if !SANITIZER_ANDROID && !SANITIZER_MAC
508   unsigned struct_sioc_sg_req_sz = sizeof(struct sioc_sg_req);
509   unsigned struct_sioc_vif_req_sz = sizeof(struct sioc_vif_req);
510 #endif
511 
512   const unsigned long __sanitizer_bufsiz = BUFSIZ;
513 
514   const unsigned IOCTL_NOT_PRESENT = 0;
515 
516   unsigned IOCTL_FIOASYNC = FIOASYNC;
517   unsigned IOCTL_FIOCLEX = FIOCLEX;
518   unsigned IOCTL_FIOGETOWN = FIOGETOWN;
519   unsigned IOCTL_FIONBIO = FIONBIO;
520   unsigned IOCTL_FIONCLEX = FIONCLEX;
521   unsigned IOCTL_FIOSETOWN = FIOSETOWN;
522   unsigned IOCTL_SIOCADDMULTI = SIOCADDMULTI;
523   unsigned IOCTL_SIOCATMARK = SIOCATMARK;
524   unsigned IOCTL_SIOCDELMULTI = SIOCDELMULTI;
525   unsigned IOCTL_SIOCGIFADDR = SIOCGIFADDR;
526   unsigned IOCTL_SIOCGIFBRDADDR = SIOCGIFBRDADDR;
527   unsigned IOCTL_SIOCGIFCONF = SIOCGIFCONF;
528   unsigned IOCTL_SIOCGIFDSTADDR = SIOCGIFDSTADDR;
529   unsigned IOCTL_SIOCGIFFLAGS = SIOCGIFFLAGS;
530   unsigned IOCTL_SIOCGIFMETRIC = SIOCGIFMETRIC;
531   unsigned IOCTL_SIOCGIFMTU = SIOCGIFMTU;
532   unsigned IOCTL_SIOCGIFNETMASK = SIOCGIFNETMASK;
533   unsigned IOCTL_SIOCGPGRP = SIOCGPGRP;
534   unsigned IOCTL_SIOCSIFADDR = SIOCSIFADDR;
535   unsigned IOCTL_SIOCSIFBRDADDR = SIOCSIFBRDADDR;
536   unsigned IOCTL_SIOCSIFDSTADDR = SIOCSIFDSTADDR;
537   unsigned IOCTL_SIOCSIFFLAGS = SIOCSIFFLAGS;
538   unsigned IOCTL_SIOCSIFMETRIC = SIOCSIFMETRIC;
539   unsigned IOCTL_SIOCSIFMTU = SIOCSIFMTU;
540   unsigned IOCTL_SIOCSIFNETMASK = SIOCSIFNETMASK;
541   unsigned IOCTL_SIOCSPGRP = SIOCSPGRP;
542   unsigned IOCTL_TIOCCONS = TIOCCONS;
543   unsigned IOCTL_TIOCEXCL = TIOCEXCL;
544   unsigned IOCTL_TIOCGETD = TIOCGETD;
545   unsigned IOCTL_TIOCGPGRP = TIOCGPGRP;
546   unsigned IOCTL_TIOCGWINSZ = TIOCGWINSZ;
547   unsigned IOCTL_TIOCMBIC = TIOCMBIC;
548   unsigned IOCTL_TIOCMBIS = TIOCMBIS;
549   unsigned IOCTL_TIOCMGET = TIOCMGET;
550   unsigned IOCTL_TIOCMSET = TIOCMSET;
551   unsigned IOCTL_TIOCNOTTY = TIOCNOTTY;
552   unsigned IOCTL_TIOCNXCL = TIOCNXCL;
553   unsigned IOCTL_TIOCOUTQ = TIOCOUTQ;
554   unsigned IOCTL_TIOCPKT = TIOCPKT;
555   unsigned IOCTL_TIOCSCTTY = TIOCSCTTY;
556   unsigned IOCTL_TIOCSETD = TIOCSETD;
557   unsigned IOCTL_TIOCSPGRP = TIOCSPGRP;
558   unsigned IOCTL_TIOCSTI = TIOCSTI;
559   unsigned IOCTL_TIOCSWINSZ = TIOCSWINSZ;
560 #if SANITIZER_LINUX && !SANITIZER_ANDROID
561   unsigned IOCTL_SIOCGETSGCNT = SIOCGETSGCNT;
562   unsigned IOCTL_SIOCGETVIFCNT = SIOCGETVIFCNT;
563 #endif
564 
565 #if SANITIZER_LINUX
566   unsigned IOCTL_EVIOCGABS = EVIOCGABS(0);
567   unsigned IOCTL_EVIOCGBIT = EVIOCGBIT(0, 0);
568   unsigned IOCTL_EVIOCGEFFECTS = EVIOCGEFFECTS;
569   unsigned IOCTL_EVIOCGID = EVIOCGID;
570   unsigned IOCTL_EVIOCGKEY = EVIOCGKEY(0);
571   unsigned IOCTL_EVIOCGKEYCODE = EVIOCGKEYCODE;
572   unsigned IOCTL_EVIOCGLED = EVIOCGLED(0);
573   unsigned IOCTL_EVIOCGNAME = EVIOCGNAME(0);
574   unsigned IOCTL_EVIOCGPHYS = EVIOCGPHYS(0);
575   unsigned IOCTL_EVIOCGRAB = EVIOCGRAB;
576   unsigned IOCTL_EVIOCGREP = EVIOCGREP;
577   unsigned IOCTL_EVIOCGSND = EVIOCGSND(0);
578   unsigned IOCTL_EVIOCGSW = EVIOCGSW(0);
579   unsigned IOCTL_EVIOCGUNIQ = EVIOCGUNIQ(0);
580   unsigned IOCTL_EVIOCGVERSION = EVIOCGVERSION;
581   unsigned IOCTL_EVIOCRMFF = EVIOCRMFF;
582   unsigned IOCTL_EVIOCSABS = EVIOCSABS(0);
583   unsigned IOCTL_EVIOCSFF = EVIOCSFF;
584   unsigned IOCTL_EVIOCSKEYCODE = EVIOCSKEYCODE;
585   unsigned IOCTL_EVIOCSREP = EVIOCSREP;
586   unsigned IOCTL_BLKFLSBUF = BLKFLSBUF;
587   unsigned IOCTL_BLKGETSIZE = BLKGETSIZE;
588   unsigned IOCTL_BLKRAGET = BLKRAGET;
589   unsigned IOCTL_BLKRASET = BLKRASET;
590   unsigned IOCTL_BLKROGET = BLKROGET;
591   unsigned IOCTL_BLKROSET = BLKROSET;
592   unsigned IOCTL_BLKRRPART = BLKRRPART;
593   unsigned IOCTL_CDROMAUDIOBUFSIZ = CDROMAUDIOBUFSIZ;
594   unsigned IOCTL_CDROMEJECT = CDROMEJECT;
595   unsigned IOCTL_CDROMEJECT_SW = CDROMEJECT_SW;
596   unsigned IOCTL_CDROMMULTISESSION = CDROMMULTISESSION;
597   unsigned IOCTL_CDROMPAUSE = CDROMPAUSE;
598   unsigned IOCTL_CDROMPLAYMSF = CDROMPLAYMSF;
599   unsigned IOCTL_CDROMPLAYTRKIND = CDROMPLAYTRKIND;
600   unsigned IOCTL_CDROMREADAUDIO = CDROMREADAUDIO;
601   unsigned IOCTL_CDROMREADCOOKED = CDROMREADCOOKED;
602   unsigned IOCTL_CDROMREADMODE1 = CDROMREADMODE1;
603   unsigned IOCTL_CDROMREADMODE2 = CDROMREADMODE2;
604   unsigned IOCTL_CDROMREADRAW = CDROMREADRAW;
605   unsigned IOCTL_CDROMREADTOCENTRY = CDROMREADTOCENTRY;
606   unsigned IOCTL_CDROMREADTOCHDR = CDROMREADTOCHDR;
607   unsigned IOCTL_CDROMRESET = CDROMRESET;
608   unsigned IOCTL_CDROMRESUME = CDROMRESUME;
609   unsigned IOCTL_CDROMSEEK = CDROMSEEK;
610   unsigned IOCTL_CDROMSTART = CDROMSTART;
611   unsigned IOCTL_CDROMSTOP = CDROMSTOP;
612   unsigned IOCTL_CDROMSUBCHNL = CDROMSUBCHNL;
613   unsigned IOCTL_CDROMVOLCTRL = CDROMVOLCTRL;
614   unsigned IOCTL_CDROMVOLREAD = CDROMVOLREAD;
615   unsigned IOCTL_CDROM_GET_UPC = CDROM_GET_UPC;
616   unsigned IOCTL_FDCLRPRM = FDCLRPRM;
617   unsigned IOCTL_FDDEFPRM = FDDEFPRM;
618   unsigned IOCTL_FDFLUSH = FDFLUSH;
619   unsigned IOCTL_FDFMTBEG = FDFMTBEG;
620   unsigned IOCTL_FDFMTEND = FDFMTEND;
621   unsigned IOCTL_FDFMTTRK = FDFMTTRK;
622   unsigned IOCTL_FDGETDRVPRM = FDGETDRVPRM;
623   unsigned IOCTL_FDGETDRVSTAT = FDGETDRVSTAT;
624   unsigned IOCTL_FDGETDRVTYP = FDGETDRVTYP;
625   unsigned IOCTL_FDGETFDCSTAT = FDGETFDCSTAT;
626   unsigned IOCTL_FDGETMAXERRS = FDGETMAXERRS;
627   unsigned IOCTL_FDGETPRM = FDGETPRM;
628   unsigned IOCTL_FDMSGOFF = FDMSGOFF;
629   unsigned IOCTL_FDMSGON = FDMSGON;
630   unsigned IOCTL_FDPOLLDRVSTAT = FDPOLLDRVSTAT;
631   unsigned IOCTL_FDRAWCMD = FDRAWCMD;
632   unsigned IOCTL_FDRESET = FDRESET;
633   unsigned IOCTL_FDSETDRVPRM = FDSETDRVPRM;
634   unsigned IOCTL_FDSETEMSGTRESH = FDSETEMSGTRESH;
635   unsigned IOCTL_FDSETMAXERRS = FDSETMAXERRS;
636   unsigned IOCTL_FDSETPRM = FDSETPRM;
637   unsigned IOCTL_FDTWADDLE = FDTWADDLE;
638   unsigned IOCTL_FDWERRORCLR = FDWERRORCLR;
639   unsigned IOCTL_FDWERRORGET = FDWERRORGET;
640   unsigned IOCTL_HDIO_DRIVE_CMD = HDIO_DRIVE_CMD;
641   unsigned IOCTL_HDIO_GETGEO = HDIO_GETGEO;
642   unsigned IOCTL_HDIO_GET_32BIT = HDIO_GET_32BIT;
643   unsigned IOCTL_HDIO_GET_DMA = HDIO_GET_DMA;
644   unsigned IOCTL_HDIO_GET_IDENTITY = HDIO_GET_IDENTITY;
645   unsigned IOCTL_HDIO_GET_KEEPSETTINGS = HDIO_GET_KEEPSETTINGS;
646   unsigned IOCTL_HDIO_GET_MULTCOUNT = HDIO_GET_MULTCOUNT;
647   unsigned IOCTL_HDIO_GET_NOWERR = HDIO_GET_NOWERR;
648   unsigned IOCTL_HDIO_GET_UNMASKINTR = HDIO_GET_UNMASKINTR;
649   unsigned IOCTL_HDIO_SET_32BIT = HDIO_SET_32BIT;
650   unsigned IOCTL_HDIO_SET_DMA = HDIO_SET_DMA;
651   unsigned IOCTL_HDIO_SET_KEEPSETTINGS = HDIO_SET_KEEPSETTINGS;
652   unsigned IOCTL_HDIO_SET_MULTCOUNT = HDIO_SET_MULTCOUNT;
653   unsigned IOCTL_HDIO_SET_NOWERR = HDIO_SET_NOWERR;
654   unsigned IOCTL_HDIO_SET_UNMASKINTR = HDIO_SET_UNMASKINTR;
655   unsigned IOCTL_MTIOCPOS = MTIOCPOS;
656   unsigned IOCTL_PPPIOCGASYNCMAP = PPPIOCGASYNCMAP;
657   unsigned IOCTL_PPPIOCGDEBUG = PPPIOCGDEBUG;
658   unsigned IOCTL_PPPIOCGFLAGS = PPPIOCGFLAGS;
659   unsigned IOCTL_PPPIOCGUNIT = PPPIOCGUNIT;
660   unsigned IOCTL_PPPIOCGXASYNCMAP = PPPIOCGXASYNCMAP;
661   unsigned IOCTL_PPPIOCSASYNCMAP = PPPIOCSASYNCMAP;
662   unsigned IOCTL_PPPIOCSDEBUG = PPPIOCSDEBUG;
663   unsigned IOCTL_PPPIOCSFLAGS = PPPIOCSFLAGS;
664   unsigned IOCTL_PPPIOCSMAXCID = PPPIOCSMAXCID;
665   unsigned IOCTL_PPPIOCSMRU = PPPIOCSMRU;
666   unsigned IOCTL_PPPIOCSXASYNCMAP = PPPIOCSXASYNCMAP;
667   unsigned IOCTL_SIOCADDRT = SIOCADDRT;
668   unsigned IOCTL_SIOCDARP = SIOCDARP;
669   unsigned IOCTL_SIOCDELRT = SIOCDELRT;
670   unsigned IOCTL_SIOCDRARP = SIOCDRARP;
671   unsigned IOCTL_SIOCGARP = SIOCGARP;
672   unsigned IOCTL_SIOCGIFENCAP = SIOCGIFENCAP;
673   unsigned IOCTL_SIOCGIFHWADDR = SIOCGIFHWADDR;
674   unsigned IOCTL_SIOCGIFMAP = SIOCGIFMAP;
675   unsigned IOCTL_SIOCGIFMEM = SIOCGIFMEM;
676   unsigned IOCTL_SIOCGIFNAME = SIOCGIFNAME;
677   unsigned IOCTL_SIOCGIFSLAVE = SIOCGIFSLAVE;
678   unsigned IOCTL_SIOCGRARP = SIOCGRARP;
679   unsigned IOCTL_SIOCGSTAMP = SIOCGSTAMP;
680   unsigned IOCTL_SIOCSARP = SIOCSARP;
681   unsigned IOCTL_SIOCSIFENCAP = SIOCSIFENCAP;
682   unsigned IOCTL_SIOCSIFHWADDR = SIOCSIFHWADDR;
683   unsigned IOCTL_SIOCSIFLINK = SIOCSIFLINK;
684   unsigned IOCTL_SIOCSIFMAP = SIOCSIFMAP;
685   unsigned IOCTL_SIOCSIFMEM = SIOCSIFMEM;
686   unsigned IOCTL_SIOCSIFSLAVE = SIOCSIFSLAVE;
687   unsigned IOCTL_SIOCSRARP = SIOCSRARP;
688 # if SOUND_VERSION >= 0x040000
689   unsigned IOCTL_SNDCTL_COPR_HALT = IOCTL_NOT_PRESENT;
690   unsigned IOCTL_SNDCTL_COPR_LOAD = IOCTL_NOT_PRESENT;
691   unsigned IOCTL_SNDCTL_COPR_RCODE = IOCTL_NOT_PRESENT;
692   unsigned IOCTL_SNDCTL_COPR_RCVMSG = IOCTL_NOT_PRESENT;
693   unsigned IOCTL_SNDCTL_COPR_RDATA = IOCTL_NOT_PRESENT;
694   unsigned IOCTL_SNDCTL_COPR_RESET = IOCTL_NOT_PRESENT;
695   unsigned IOCTL_SNDCTL_COPR_RUN = IOCTL_NOT_PRESENT;
696   unsigned IOCTL_SNDCTL_COPR_SENDMSG = IOCTL_NOT_PRESENT;
697   unsigned IOCTL_SNDCTL_COPR_WCODE = IOCTL_NOT_PRESENT;
698   unsigned IOCTL_SNDCTL_COPR_WDATA = IOCTL_NOT_PRESENT;
699   unsigned IOCTL_SOUND_PCM_READ_BITS = IOCTL_NOT_PRESENT;
700   unsigned IOCTL_SOUND_PCM_READ_CHANNELS = IOCTL_NOT_PRESENT;
701   unsigned IOCTL_SOUND_PCM_READ_FILTER = IOCTL_NOT_PRESENT;
702   unsigned IOCTL_SOUND_PCM_READ_RATE = IOCTL_NOT_PRESENT;
703   unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS = IOCTL_NOT_PRESENT;
704   unsigned IOCTL_SOUND_PCM_WRITE_FILTER = IOCTL_NOT_PRESENT;
705 # else  // SOUND_VERSION
706   unsigned IOCTL_SNDCTL_COPR_HALT = SNDCTL_COPR_HALT;
707   unsigned IOCTL_SNDCTL_COPR_LOAD = SNDCTL_COPR_LOAD;
708   unsigned IOCTL_SNDCTL_COPR_RCODE = SNDCTL_COPR_RCODE;
709   unsigned IOCTL_SNDCTL_COPR_RCVMSG = SNDCTL_COPR_RCVMSG;
710   unsigned IOCTL_SNDCTL_COPR_RDATA = SNDCTL_COPR_RDATA;
711   unsigned IOCTL_SNDCTL_COPR_RESET = SNDCTL_COPR_RESET;
712   unsigned IOCTL_SNDCTL_COPR_RUN = SNDCTL_COPR_RUN;
713   unsigned IOCTL_SNDCTL_COPR_SENDMSG = SNDCTL_COPR_SENDMSG;
714   unsigned IOCTL_SNDCTL_COPR_WCODE = SNDCTL_COPR_WCODE;
715   unsigned IOCTL_SNDCTL_COPR_WDATA = SNDCTL_COPR_WDATA;
716   unsigned IOCTL_SOUND_PCM_READ_BITS = SOUND_PCM_READ_BITS;
717   unsigned IOCTL_SOUND_PCM_READ_CHANNELS = SOUND_PCM_READ_CHANNELS;
718   unsigned IOCTL_SOUND_PCM_READ_FILTER = SOUND_PCM_READ_FILTER;
719   unsigned IOCTL_SOUND_PCM_READ_RATE = SOUND_PCM_READ_RATE;
720   unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS = SOUND_PCM_WRITE_CHANNELS;
721   unsigned IOCTL_SOUND_PCM_WRITE_FILTER = SOUND_PCM_WRITE_FILTER;
722 #endif // SOUND_VERSION
723   unsigned IOCTL_TCFLSH = TCFLSH;
724   unsigned IOCTL_TCGETA = TCGETA;
725   unsigned IOCTL_TCGETS = TCGETS;
726   unsigned IOCTL_TCSBRK = TCSBRK;
727   unsigned IOCTL_TCSBRKP = TCSBRKP;
728   unsigned IOCTL_TCSETA = TCSETA;
729   unsigned IOCTL_TCSETAF = TCSETAF;
730   unsigned IOCTL_TCSETAW = TCSETAW;
731   unsigned IOCTL_TCSETS = TCSETS;
732   unsigned IOCTL_TCSETSF = TCSETSF;
733   unsigned IOCTL_TCSETSW = TCSETSW;
734   unsigned IOCTL_TCXONC = TCXONC;
735   unsigned IOCTL_TIOCGLCKTRMIOS = TIOCGLCKTRMIOS;
736   unsigned IOCTL_TIOCGSOFTCAR = TIOCGSOFTCAR;
737   unsigned IOCTL_TIOCINQ = TIOCINQ;
738   unsigned IOCTL_TIOCLINUX = TIOCLINUX;
739   unsigned IOCTL_TIOCSERCONFIG = TIOCSERCONFIG;
740   unsigned IOCTL_TIOCSERGETLSR = TIOCSERGETLSR;
741   unsigned IOCTL_TIOCSERGWILD = TIOCSERGWILD;
742   unsigned IOCTL_TIOCSERSWILD = TIOCSERSWILD;
743   unsigned IOCTL_TIOCSLCKTRMIOS = TIOCSLCKTRMIOS;
744   unsigned IOCTL_TIOCSSOFTCAR = TIOCSSOFTCAR;
745   unsigned IOCTL_VT_DISALLOCATE = VT_DISALLOCATE;
746   unsigned IOCTL_VT_GETSTATE = VT_GETSTATE;
747   unsigned IOCTL_VT_RESIZE = VT_RESIZE;
748   unsigned IOCTL_VT_RESIZEX = VT_RESIZEX;
749   unsigned IOCTL_VT_SENDSIG = VT_SENDSIG;
750   unsigned IOCTL_MTIOCGET = MTIOCGET;
751   unsigned IOCTL_MTIOCTOP = MTIOCTOP;
752   unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE = SNDCTL_DSP_GETBLKSIZE;
753   unsigned IOCTL_SNDCTL_DSP_GETFMTS = SNDCTL_DSP_GETFMTS;
754   unsigned IOCTL_SNDCTL_DSP_NONBLOCK = SNDCTL_DSP_NONBLOCK;
755   unsigned IOCTL_SNDCTL_DSP_POST = SNDCTL_DSP_POST;
756   unsigned IOCTL_SNDCTL_DSP_RESET = SNDCTL_DSP_RESET;
757   unsigned IOCTL_SNDCTL_DSP_SETFMT = SNDCTL_DSP_SETFMT;
758   unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT = SNDCTL_DSP_SETFRAGMENT;
759   unsigned IOCTL_SNDCTL_DSP_SPEED = SNDCTL_DSP_SPEED;
760   unsigned IOCTL_SNDCTL_DSP_STEREO = SNDCTL_DSP_STEREO;
761   unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE = SNDCTL_DSP_SUBDIVIDE;
762   unsigned IOCTL_SNDCTL_DSP_SYNC = SNDCTL_DSP_SYNC;
763   unsigned IOCTL_SNDCTL_FM_4OP_ENABLE = SNDCTL_FM_4OP_ENABLE;
764   unsigned IOCTL_SNDCTL_FM_LOAD_INSTR = SNDCTL_FM_LOAD_INSTR;
765   unsigned IOCTL_SNDCTL_MIDI_INFO = SNDCTL_MIDI_INFO;
766   unsigned IOCTL_SNDCTL_MIDI_PRETIME = SNDCTL_MIDI_PRETIME;
767   unsigned IOCTL_SNDCTL_SEQ_CTRLRATE = SNDCTL_SEQ_CTRLRATE;
768   unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT = SNDCTL_SEQ_GETINCOUNT;
769   unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT = SNDCTL_SEQ_GETOUTCOUNT;
770   unsigned IOCTL_SNDCTL_SEQ_NRMIDIS = SNDCTL_SEQ_NRMIDIS;
771   unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS = SNDCTL_SEQ_NRSYNTHS;
772   unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND = SNDCTL_SEQ_OUTOFBAND;
773   unsigned IOCTL_SNDCTL_SEQ_PANIC = SNDCTL_SEQ_PANIC;
774   unsigned IOCTL_SNDCTL_SEQ_PERCMODE = SNDCTL_SEQ_PERCMODE;
775   unsigned IOCTL_SNDCTL_SEQ_RESET = SNDCTL_SEQ_RESET;
776   unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES = SNDCTL_SEQ_RESETSAMPLES;
777   unsigned IOCTL_SNDCTL_SEQ_SYNC = SNDCTL_SEQ_SYNC;
778   unsigned IOCTL_SNDCTL_SEQ_TESTMIDI = SNDCTL_SEQ_TESTMIDI;
779   unsigned IOCTL_SNDCTL_SEQ_THRESHOLD = SNDCTL_SEQ_THRESHOLD;
780   unsigned IOCTL_SNDCTL_SYNTH_INFO = SNDCTL_SYNTH_INFO;
781   unsigned IOCTL_SNDCTL_SYNTH_MEMAVL = SNDCTL_SYNTH_MEMAVL;
782   unsigned IOCTL_SNDCTL_TMR_CONTINUE = SNDCTL_TMR_CONTINUE;
783   unsigned IOCTL_SNDCTL_TMR_METRONOME = SNDCTL_TMR_METRONOME;
784   unsigned IOCTL_SNDCTL_TMR_SELECT = SNDCTL_TMR_SELECT;
785   unsigned IOCTL_SNDCTL_TMR_SOURCE = SNDCTL_TMR_SOURCE;
786   unsigned IOCTL_SNDCTL_TMR_START = SNDCTL_TMR_START;
787   unsigned IOCTL_SNDCTL_TMR_STOP = SNDCTL_TMR_STOP;
788   unsigned IOCTL_SNDCTL_TMR_TEMPO = SNDCTL_TMR_TEMPO;
789   unsigned IOCTL_SNDCTL_TMR_TIMEBASE = SNDCTL_TMR_TIMEBASE;
790   unsigned IOCTL_SOUND_MIXER_READ_ALTPCM = SOUND_MIXER_READ_ALTPCM;
791   unsigned IOCTL_SOUND_MIXER_READ_BASS = SOUND_MIXER_READ_BASS;
792   unsigned IOCTL_SOUND_MIXER_READ_CAPS = SOUND_MIXER_READ_CAPS;
793   unsigned IOCTL_SOUND_MIXER_READ_CD = SOUND_MIXER_READ_CD;
794   unsigned IOCTL_SOUND_MIXER_READ_DEVMASK = SOUND_MIXER_READ_DEVMASK;
795   unsigned IOCTL_SOUND_MIXER_READ_ENHANCE = SOUND_MIXER_READ_ENHANCE;
796   unsigned IOCTL_SOUND_MIXER_READ_IGAIN = SOUND_MIXER_READ_IGAIN;
797   unsigned IOCTL_SOUND_MIXER_READ_IMIX = SOUND_MIXER_READ_IMIX;
798   unsigned IOCTL_SOUND_MIXER_READ_LINE = SOUND_MIXER_READ_LINE;
799   unsigned IOCTL_SOUND_MIXER_READ_LINE1 = SOUND_MIXER_READ_LINE1;
800   unsigned IOCTL_SOUND_MIXER_READ_LINE2 = SOUND_MIXER_READ_LINE2;
801   unsigned IOCTL_SOUND_MIXER_READ_LINE3 = SOUND_MIXER_READ_LINE3;
802   unsigned IOCTL_SOUND_MIXER_READ_LOUD = SOUND_MIXER_READ_LOUD;
803   unsigned IOCTL_SOUND_MIXER_READ_MIC = SOUND_MIXER_READ_MIC;
804   unsigned IOCTL_SOUND_MIXER_READ_MUTE = SOUND_MIXER_READ_MUTE;
805   unsigned IOCTL_SOUND_MIXER_READ_OGAIN = SOUND_MIXER_READ_OGAIN;
806   unsigned IOCTL_SOUND_MIXER_READ_PCM = SOUND_MIXER_READ_PCM;
807   unsigned IOCTL_SOUND_MIXER_READ_RECLEV = SOUND_MIXER_READ_RECLEV;
808   unsigned IOCTL_SOUND_MIXER_READ_RECMASK = SOUND_MIXER_READ_RECMASK;
809   unsigned IOCTL_SOUND_MIXER_READ_RECSRC = SOUND_MIXER_READ_RECSRC;
810   unsigned IOCTL_SOUND_MIXER_READ_SPEAKER = SOUND_MIXER_READ_SPEAKER;
811   unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS = SOUND_MIXER_READ_STEREODEVS;
812   unsigned IOCTL_SOUND_MIXER_READ_SYNTH = SOUND_MIXER_READ_SYNTH;
813   unsigned IOCTL_SOUND_MIXER_READ_TREBLE = SOUND_MIXER_READ_TREBLE;
814   unsigned IOCTL_SOUND_MIXER_READ_VOLUME = SOUND_MIXER_READ_VOLUME;
815   unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM = SOUND_MIXER_WRITE_ALTPCM;
816   unsigned IOCTL_SOUND_MIXER_WRITE_BASS = SOUND_MIXER_WRITE_BASS;
817   unsigned IOCTL_SOUND_MIXER_WRITE_CD = SOUND_MIXER_WRITE_CD;
818   unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE = SOUND_MIXER_WRITE_ENHANCE;
819   unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN = SOUND_MIXER_WRITE_IGAIN;
820   unsigned IOCTL_SOUND_MIXER_WRITE_IMIX = SOUND_MIXER_WRITE_IMIX;
821   unsigned IOCTL_SOUND_MIXER_WRITE_LINE = SOUND_MIXER_WRITE_LINE;
822   unsigned IOCTL_SOUND_MIXER_WRITE_LINE1 = SOUND_MIXER_WRITE_LINE1;
823   unsigned IOCTL_SOUND_MIXER_WRITE_LINE2 = SOUND_MIXER_WRITE_LINE2;
824   unsigned IOCTL_SOUND_MIXER_WRITE_LINE3 = SOUND_MIXER_WRITE_LINE3;
825   unsigned IOCTL_SOUND_MIXER_WRITE_LOUD = SOUND_MIXER_WRITE_LOUD;
826   unsigned IOCTL_SOUND_MIXER_WRITE_MIC = SOUND_MIXER_WRITE_MIC;
827   unsigned IOCTL_SOUND_MIXER_WRITE_MUTE = SOUND_MIXER_WRITE_MUTE;
828   unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN = SOUND_MIXER_WRITE_OGAIN;
829   unsigned IOCTL_SOUND_MIXER_WRITE_PCM = SOUND_MIXER_WRITE_PCM;
830   unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV = SOUND_MIXER_WRITE_RECLEV;
831   unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC = SOUND_MIXER_WRITE_RECSRC;
832   unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER = SOUND_MIXER_WRITE_SPEAKER;
833   unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH = SOUND_MIXER_WRITE_SYNTH;
834   unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE = SOUND_MIXER_WRITE_TREBLE;
835   unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME = SOUND_MIXER_WRITE_VOLUME;
836   unsigned IOCTL_VT_ACTIVATE = VT_ACTIVATE;
837   unsigned IOCTL_VT_GETMODE = VT_GETMODE;
838   unsigned IOCTL_VT_OPENQRY = VT_OPENQRY;
839   unsigned IOCTL_VT_RELDISP = VT_RELDISP;
840   unsigned IOCTL_VT_SETMODE = VT_SETMODE;
841   unsigned IOCTL_VT_WAITACTIVE = VT_WAITACTIVE;
842 #endif // SANITIZER_LINUX
843 
844 #if SANITIZER_LINUX && !SANITIZER_ANDROID
845   unsigned IOCTL_EQL_EMANCIPATE = EQL_EMANCIPATE;
846   unsigned IOCTL_EQL_ENSLAVE = EQL_ENSLAVE;
847   unsigned IOCTL_EQL_GETMASTRCFG = EQL_GETMASTRCFG;
848   unsigned IOCTL_EQL_GETSLAVECFG = EQL_GETSLAVECFG;
849   unsigned IOCTL_EQL_SETMASTRCFG = EQL_SETMASTRCFG;
850   unsigned IOCTL_EQL_SETSLAVECFG = EQL_SETSLAVECFG;
851 #if EV_VERSION > (0x010000)
852   unsigned IOCTL_EVIOCGKEYCODE_V2 = EVIOCGKEYCODE_V2;
853   unsigned IOCTL_EVIOCGPROP = EVIOCGPROP(0);
854   unsigned IOCTL_EVIOCSKEYCODE_V2 = EVIOCSKEYCODE_V2;
855 #else
856   unsigned IOCTL_EVIOCGKEYCODE_V2 = IOCTL_NOT_PRESENT;
857   unsigned IOCTL_EVIOCGPROP = IOCTL_NOT_PRESENT;
858   unsigned IOCTL_EVIOCSKEYCODE_V2 = IOCTL_NOT_PRESENT;
859 #endif
860   unsigned IOCTL_FS_IOC_GETFLAGS = FS_IOC_GETFLAGS;
861   unsigned IOCTL_FS_IOC_GETVERSION = FS_IOC_GETVERSION;
862   unsigned IOCTL_FS_IOC_SETFLAGS = FS_IOC_SETFLAGS;
863   unsigned IOCTL_FS_IOC_SETVERSION = FS_IOC_SETVERSION;
864   unsigned IOCTL_GIO_CMAP = GIO_CMAP;
865   unsigned IOCTL_GIO_FONT = GIO_FONT;
866   unsigned IOCTL_GIO_UNIMAP = GIO_UNIMAP;
867   unsigned IOCTL_GIO_UNISCRNMAP = GIO_UNISCRNMAP;
868   unsigned IOCTL_KDADDIO = KDADDIO;
869   unsigned IOCTL_KDDELIO = KDDELIO;
870   unsigned IOCTL_KDGETKEYCODE = KDGETKEYCODE;
871   unsigned IOCTL_KDGKBDIACR = KDGKBDIACR;
872   unsigned IOCTL_KDGKBENT = KDGKBENT;
873   unsigned IOCTL_KDGKBLED = KDGKBLED;
874   unsigned IOCTL_KDGKBMETA = KDGKBMETA;
875   unsigned IOCTL_KDGKBSENT = KDGKBSENT;
876   unsigned IOCTL_KDMAPDISP = KDMAPDISP;
877   unsigned IOCTL_KDSETKEYCODE = KDSETKEYCODE;
878   unsigned IOCTL_KDSIGACCEPT = KDSIGACCEPT;
879   unsigned IOCTL_KDSKBDIACR = KDSKBDIACR;
880   unsigned IOCTL_KDSKBENT = KDSKBENT;
881   unsigned IOCTL_KDSKBLED = KDSKBLED;
882   unsigned IOCTL_KDSKBMETA = KDSKBMETA;
883   unsigned IOCTL_KDSKBSENT = KDSKBSENT;
884   unsigned IOCTL_KDUNMAPDISP = KDUNMAPDISP;
885   unsigned IOCTL_LPABORT = LPABORT;
886   unsigned IOCTL_LPABORTOPEN = LPABORTOPEN;
887   unsigned IOCTL_LPCAREFUL = LPCAREFUL;
888   unsigned IOCTL_LPCHAR = LPCHAR;
889   unsigned IOCTL_LPGETIRQ = LPGETIRQ;
890   unsigned IOCTL_LPGETSTATUS = LPGETSTATUS;
891   unsigned IOCTL_LPRESET = LPRESET;
892   unsigned IOCTL_LPSETIRQ = LPSETIRQ;
893   unsigned IOCTL_LPTIME = LPTIME;
894   unsigned IOCTL_LPWAIT = LPWAIT;
895   unsigned IOCTL_MTIOCGETCONFIG = MTIOCGETCONFIG;
896   unsigned IOCTL_MTIOCSETCONFIG = MTIOCSETCONFIG;
897   unsigned IOCTL_PIO_CMAP = PIO_CMAP;
898   unsigned IOCTL_PIO_FONT = PIO_FONT;
899   unsigned IOCTL_PIO_UNIMAP = PIO_UNIMAP;
900   unsigned IOCTL_PIO_UNIMAPCLR = PIO_UNIMAPCLR;
901   unsigned IOCTL_PIO_UNISCRNMAP = PIO_UNISCRNMAP;
902 #if SANITIZER_GLIBC
903   unsigned IOCTL_SCSI_IOCTL_GET_IDLUN = SCSI_IOCTL_GET_IDLUN;
904   unsigned IOCTL_SCSI_IOCTL_PROBE_HOST = SCSI_IOCTL_PROBE_HOST;
905   unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE = SCSI_IOCTL_TAGGED_DISABLE;
906   unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE = SCSI_IOCTL_TAGGED_ENABLE;
907   unsigned IOCTL_SIOCAIPXITFCRT = SIOCAIPXITFCRT;
908   unsigned IOCTL_SIOCAIPXPRISLT = SIOCAIPXPRISLT;
909   unsigned IOCTL_SIOCAX25ADDUID = SIOCAX25ADDUID;
910   unsigned IOCTL_SIOCAX25DELUID = SIOCAX25DELUID;
911   unsigned IOCTL_SIOCAX25GETPARMS = SIOCAX25GETPARMS;
912   unsigned IOCTL_SIOCAX25GETUID = SIOCAX25GETUID;
913   unsigned IOCTL_SIOCAX25NOUID = SIOCAX25NOUID;
914   unsigned IOCTL_SIOCAX25SETPARMS = SIOCAX25SETPARMS;
915   unsigned IOCTL_SIOCDEVPLIP = SIOCDEVPLIP;
916   unsigned IOCTL_SIOCIPXCFGDATA = SIOCIPXCFGDATA;
917   unsigned IOCTL_SIOCNRDECOBS = SIOCNRDECOBS;
918   unsigned IOCTL_SIOCNRGETPARMS = SIOCNRGETPARMS;
919   unsigned IOCTL_SIOCNRRTCTL = SIOCNRRTCTL;
920   unsigned IOCTL_SIOCNRSETPARMS = SIOCNRSETPARMS;
921 #endif
922   unsigned IOCTL_TIOCGSERIAL = TIOCGSERIAL;
923   unsigned IOCTL_TIOCSERGETMULTI = TIOCSERGETMULTI;
924   unsigned IOCTL_TIOCSERSETMULTI = TIOCSERSETMULTI;
925   unsigned IOCTL_TIOCSSERIAL = TIOCSSERIAL;
926 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
927 
928 #if SANITIZER_LINUX && !SANITIZER_ANDROID
929   unsigned IOCTL_GIO_SCRNMAP = GIO_SCRNMAP;
930   unsigned IOCTL_KDDISABIO = KDDISABIO;
931   unsigned IOCTL_KDENABIO = KDENABIO;
932   unsigned IOCTL_KDGETLED = KDGETLED;
933   unsigned IOCTL_KDGETMODE = KDGETMODE;
934   unsigned IOCTL_KDGKBMODE = KDGKBMODE;
935   unsigned IOCTL_KDGKBTYPE = KDGKBTYPE;
936   unsigned IOCTL_KDMKTONE = KDMKTONE;
937   unsigned IOCTL_KDSETLED = KDSETLED;
938   unsigned IOCTL_KDSETMODE = KDSETMODE;
939   unsigned IOCTL_KDSKBMODE = KDSKBMODE;
940   unsigned IOCTL_KIOCSOUND = KIOCSOUND;
941   unsigned IOCTL_PIO_SCRNMAP = PIO_SCRNMAP;
942   unsigned IOCTL_SNDCTL_DSP_GETISPACE = SNDCTL_DSP_GETISPACE;
943   unsigned IOCTL_SNDCTL_DSP_GETOSPACE = SNDCTL_DSP_GETOSPACE;
944 #endif // (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID
945 
946   const int si_SEGV_MAPERR = SEGV_MAPERR;
947   const int si_SEGV_ACCERR = SEGV_ACCERR;
948 } // namespace __sanitizer
949 
950 using namespace __sanitizer;
951 
952 COMPILER_CHECK(sizeof(__sanitizer_pthread_attr_t) >= sizeof(pthread_attr_t));
953 
954 COMPILER_CHECK(sizeof(socklen_t) == sizeof(unsigned));
955 CHECK_TYPE_SIZE(pthread_key_t);
956 
957 #if SANITIZER_LINUX
958 // FIXME: We define those on Linux and Mac, but only check on Linux.
959 COMPILER_CHECK(IOC_NRBITS == _IOC_NRBITS);
960 COMPILER_CHECK(IOC_TYPEBITS == _IOC_TYPEBITS);
961 COMPILER_CHECK(IOC_SIZEBITS == _IOC_SIZEBITS);
962 COMPILER_CHECK(IOC_DIRBITS == _IOC_DIRBITS);
963 COMPILER_CHECK(IOC_NRMASK == _IOC_NRMASK);
964 COMPILER_CHECK(IOC_TYPEMASK == _IOC_TYPEMASK);
965 COMPILER_CHECK(IOC_SIZEMASK == _IOC_SIZEMASK);
966 COMPILER_CHECK(IOC_DIRMASK == _IOC_DIRMASK);
967 COMPILER_CHECK(IOC_NRSHIFT == _IOC_NRSHIFT);
968 COMPILER_CHECK(IOC_TYPESHIFT == _IOC_TYPESHIFT);
969 COMPILER_CHECK(IOC_SIZESHIFT == _IOC_SIZESHIFT);
970 COMPILER_CHECK(IOC_DIRSHIFT == _IOC_DIRSHIFT);
971 COMPILER_CHECK(IOC_NONE == _IOC_NONE);
972 COMPILER_CHECK(IOC_WRITE == _IOC_WRITE);
973 COMPILER_CHECK(IOC_READ == _IOC_READ);
974 COMPILER_CHECK(EVIOC_ABS_MAX == ABS_MAX);
975 COMPILER_CHECK(EVIOC_EV_MAX == EV_MAX);
976 COMPILER_CHECK(IOC_SIZE(0x12345678) == _IOC_SIZE(0x12345678));
977 COMPILER_CHECK(IOC_DIR(0x12345678) == _IOC_DIR(0x12345678));
978 COMPILER_CHECK(IOC_NR(0x12345678) == _IOC_NR(0x12345678));
979 COMPILER_CHECK(IOC_TYPE(0x12345678) == _IOC_TYPE(0x12345678));
980 #endif // SANITIZER_LINUX
981 
982 #if SANITIZER_LINUX || SANITIZER_FREEBSD
983 // There are more undocumented fields in dl_phdr_info that we are not interested
984 // in.
985 COMPILER_CHECK(sizeof(__sanitizer_dl_phdr_info) <= sizeof(dl_phdr_info));
986 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_addr);
987 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_name);
988 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phdr);
989 CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phnum);
990 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
991 
992 #if SANITIZER_GLIBC || SANITIZER_FREEBSD
993 CHECK_TYPE_SIZE(glob_t);
994 CHECK_SIZE_AND_OFFSET(glob_t, gl_pathc);
995 CHECK_SIZE_AND_OFFSET(glob_t, gl_pathv);
996 CHECK_SIZE_AND_OFFSET(glob_t, gl_offs);
997 CHECK_SIZE_AND_OFFSET(glob_t, gl_flags);
998 CHECK_SIZE_AND_OFFSET(glob_t, gl_closedir);
999 CHECK_SIZE_AND_OFFSET(glob_t, gl_readdir);
1000 CHECK_SIZE_AND_OFFSET(glob_t, gl_opendir);
1001 CHECK_SIZE_AND_OFFSET(glob_t, gl_lstat);
1002 CHECK_SIZE_AND_OFFSET(glob_t, gl_stat);
1003 #endif  // SANITIZER_GLIBC || SANITIZER_FREEBSD
1004 
1005 CHECK_TYPE_SIZE(addrinfo);
1006 CHECK_SIZE_AND_OFFSET(addrinfo, ai_flags);
1007 CHECK_SIZE_AND_OFFSET(addrinfo, ai_family);
1008 CHECK_SIZE_AND_OFFSET(addrinfo, ai_socktype);
1009 CHECK_SIZE_AND_OFFSET(addrinfo, ai_protocol);
1010 CHECK_SIZE_AND_OFFSET(addrinfo, ai_protocol);
1011 CHECK_SIZE_AND_OFFSET(addrinfo, ai_addrlen);
1012 CHECK_SIZE_AND_OFFSET(addrinfo, ai_canonname);
1013 CHECK_SIZE_AND_OFFSET(addrinfo, ai_addr);
1014 
1015 CHECK_TYPE_SIZE(hostent);
1016 CHECK_SIZE_AND_OFFSET(hostent, h_name);
1017 CHECK_SIZE_AND_OFFSET(hostent, h_aliases);
1018 CHECK_SIZE_AND_OFFSET(hostent, h_addrtype);
1019 CHECK_SIZE_AND_OFFSET(hostent, h_length);
1020 CHECK_SIZE_AND_OFFSET(hostent, h_addr_list);
1021 
1022 CHECK_TYPE_SIZE(iovec);
1023 CHECK_SIZE_AND_OFFSET(iovec, iov_base);
1024 CHECK_SIZE_AND_OFFSET(iovec, iov_len);
1025 
1026 // In POSIX, int msg_iovlen; socklen_t msg_controllen; socklen_t cmsg_len; but
1027 // many implementations don't conform to the standard. Since we pick the
1028 // non-conforming glibc definition, exclude the checks for musl (incompatible
1029 // sizes but compatible offsets).
1030 CHECK_TYPE_SIZE(msghdr);
1031 CHECK_SIZE_AND_OFFSET(msghdr, msg_name);
1032 CHECK_SIZE_AND_OFFSET(msghdr, msg_namelen);
1033 CHECK_SIZE_AND_OFFSET(msghdr, msg_iov);
1034 #if SANITIZER_GLIBC || SANITIZER_ANDROID
1035 CHECK_SIZE_AND_OFFSET(msghdr, msg_iovlen);
1036 #endif
1037 CHECK_SIZE_AND_OFFSET(msghdr, msg_control);
1038 #if SANITIZER_GLIBC || SANITIZER_ANDROID
1039 CHECK_SIZE_AND_OFFSET(msghdr, msg_controllen);
1040 #endif
1041 CHECK_SIZE_AND_OFFSET(msghdr, msg_flags);
1042 
1043 CHECK_TYPE_SIZE(cmsghdr);
1044 #if SANITIZER_GLIBC || SANITIZER_ANDROID
1045 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_len);
1046 #endif
1047 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_level);
1048 CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_type);
1049 
1050 #if SANITIZER_LINUX && (__ANDROID_API__ >= 21 || __GLIBC_PREREQ (2, 14))
1051 CHECK_TYPE_SIZE(mmsghdr);
1052 CHECK_SIZE_AND_OFFSET(mmsghdr, msg_hdr);
1053 CHECK_SIZE_AND_OFFSET(mmsghdr, msg_len);
1054 #endif
1055 
1056 COMPILER_CHECK(sizeof(__sanitizer_dirent) <= sizeof(dirent));
1057 CHECK_SIZE_AND_OFFSET(dirent, d_ino);
1058 #if SANITIZER_MAC
1059 CHECK_SIZE_AND_OFFSET(dirent, d_seekoff);
1060 #elif SANITIZER_FREEBSD
1061 // There is no 'd_off' field on FreeBSD.
1062 #else
1063 CHECK_SIZE_AND_OFFSET(dirent, d_off);
1064 #endif
1065 CHECK_SIZE_AND_OFFSET(dirent, d_reclen);
1066 
1067 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1068 COMPILER_CHECK(sizeof(__sanitizer_dirent64) <= sizeof(dirent64));
1069 CHECK_SIZE_AND_OFFSET(dirent64, d_ino);
1070 CHECK_SIZE_AND_OFFSET(dirent64, d_off);
1071 CHECK_SIZE_AND_OFFSET(dirent64, d_reclen);
1072 #endif
1073 
1074 CHECK_TYPE_SIZE(ifconf);
1075 CHECK_SIZE_AND_OFFSET(ifconf, ifc_len);
1076 CHECK_SIZE_AND_OFFSET(ifconf, ifc_ifcu);
1077 
1078 CHECK_TYPE_SIZE(pollfd);
1079 CHECK_SIZE_AND_OFFSET(pollfd, fd);
1080 CHECK_SIZE_AND_OFFSET(pollfd, events);
1081 CHECK_SIZE_AND_OFFSET(pollfd, revents);
1082 
1083 CHECK_TYPE_SIZE(nfds_t);
1084 
1085 CHECK_TYPE_SIZE(sigset_t);
1086 
1087 COMPILER_CHECK(sizeof(__sanitizer_sigaction) == sizeof(struct sigaction));
1088 // Can't write checks for sa_handler and sa_sigaction due to them being
1089 // preprocessor macros.
1090 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_mask);
1091 #if !defined(__s390x__) || __GLIBC_PREREQ (2, 20)
1092 // On s390x glibc 2.19 and earlier sa_flags was unsigned long, and sa_resv
1093 // didn't exist.
1094 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_flags);
1095 #endif
1096 #if SANITIZER_LINUX && (!SANITIZER_ANDROID || !SANITIZER_MIPS32)
1097 CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_restorer);
1098 #endif
1099 
1100 #if SANITIZER_LINUX
1101 CHECK_TYPE_SIZE(__sysctl_args);
1102 CHECK_SIZE_AND_OFFSET(__sysctl_args, name);
1103 CHECK_SIZE_AND_OFFSET(__sysctl_args, nlen);
1104 CHECK_SIZE_AND_OFFSET(__sysctl_args, oldval);
1105 CHECK_SIZE_AND_OFFSET(__sysctl_args, oldlenp);
1106 CHECK_SIZE_AND_OFFSET(__sysctl_args, newval);
1107 CHECK_SIZE_AND_OFFSET(__sysctl_args, newlen);
1108 
1109 CHECK_TYPE_SIZE(__kernel_uid_t);
1110 CHECK_TYPE_SIZE(__kernel_gid_t);
1111 
1112 #if SANITIZER_USES_UID16_SYSCALLS
1113 CHECK_TYPE_SIZE(__kernel_old_uid_t);
1114 CHECK_TYPE_SIZE(__kernel_old_gid_t);
1115 #endif
1116 
1117 CHECK_TYPE_SIZE(__kernel_off_t);
1118 CHECK_TYPE_SIZE(__kernel_loff_t);
1119 CHECK_TYPE_SIZE(__kernel_fd_set);
1120 #endif
1121 
1122 #if !SANITIZER_ANDROID
1123 CHECK_TYPE_SIZE(wordexp_t);
1124 CHECK_SIZE_AND_OFFSET(wordexp_t, we_wordc);
1125 CHECK_SIZE_AND_OFFSET(wordexp_t, we_wordv);
1126 CHECK_SIZE_AND_OFFSET(wordexp_t, we_offs);
1127 #endif
1128 
1129 CHECK_TYPE_SIZE(tm);
1130 CHECK_SIZE_AND_OFFSET(tm, tm_sec);
1131 CHECK_SIZE_AND_OFFSET(tm, tm_min);
1132 CHECK_SIZE_AND_OFFSET(tm, tm_hour);
1133 CHECK_SIZE_AND_OFFSET(tm, tm_mday);
1134 CHECK_SIZE_AND_OFFSET(tm, tm_mon);
1135 CHECK_SIZE_AND_OFFSET(tm, tm_year);
1136 CHECK_SIZE_AND_OFFSET(tm, tm_wday);
1137 CHECK_SIZE_AND_OFFSET(tm, tm_yday);
1138 CHECK_SIZE_AND_OFFSET(tm, tm_isdst);
1139 CHECK_SIZE_AND_OFFSET(tm, tm_gmtoff);
1140 CHECK_SIZE_AND_OFFSET(tm, tm_zone);
1141 
1142 #if SANITIZER_LINUX
1143 CHECK_TYPE_SIZE(mntent);
1144 CHECK_SIZE_AND_OFFSET(mntent, mnt_fsname);
1145 CHECK_SIZE_AND_OFFSET(mntent, mnt_dir);
1146 CHECK_SIZE_AND_OFFSET(mntent, mnt_type);
1147 CHECK_SIZE_AND_OFFSET(mntent, mnt_opts);
1148 CHECK_SIZE_AND_OFFSET(mntent, mnt_freq);
1149 CHECK_SIZE_AND_OFFSET(mntent, mnt_passno);
1150 #endif
1151 
1152 CHECK_TYPE_SIZE(ether_addr);
1153 
1154 #if SANITIZER_GLIBC || SANITIZER_FREEBSD
1155 CHECK_TYPE_SIZE(ipc_perm);
1156 # if SANITIZER_FREEBSD
1157 CHECK_SIZE_AND_OFFSET(ipc_perm, key);
1158 CHECK_SIZE_AND_OFFSET(ipc_perm, seq);
1159 # else
1160 CHECK_SIZE_AND_OFFSET(ipc_perm, __key);
1161 CHECK_SIZE_AND_OFFSET(ipc_perm, __seq);
1162 # endif
1163 CHECK_SIZE_AND_OFFSET(ipc_perm, uid);
1164 CHECK_SIZE_AND_OFFSET(ipc_perm, gid);
1165 CHECK_SIZE_AND_OFFSET(ipc_perm, cuid);
1166 CHECK_SIZE_AND_OFFSET(ipc_perm, cgid);
1167 #if !SANITIZER_LINUX || __GLIBC_PREREQ (2, 31)
1168 /* glibc 2.30 and earlier provided 16-bit mode field instead of 32-bit
1169    on many architectures.  */
1170 CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
1171 #endif
1172 
1173 CHECK_TYPE_SIZE(shmid_ds);
1174 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_perm);
1175 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_segsz);
1176 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_atime);
1177 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_dtime);
1178 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_ctime);
1179 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_cpid);
1180 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_lpid);
1181 CHECK_SIZE_AND_OFFSET(shmid_ds, shm_nattch);
1182 #endif
1183 
1184 CHECK_TYPE_SIZE(clock_t);
1185 
1186 #if SANITIZER_LINUX
1187 CHECK_TYPE_SIZE(clockid_t);
1188 #endif
1189 
1190 #if !SANITIZER_ANDROID
1191 CHECK_TYPE_SIZE(ifaddrs);
1192 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_next);
1193 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_name);
1194 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_addr);
1195 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_netmask);
1196 #if SANITIZER_LINUX || SANITIZER_FREEBSD
1197 // Compare against the union, because we can't reach into the union in a
1198 // compliant way.
1199 #ifdef ifa_dstaddr
1200 #undef ifa_dstaddr
1201 #endif
1202 # if SANITIZER_FREEBSD
1203 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_dstaddr);
1204 # else
1205 COMPILER_CHECK(sizeof(((__sanitizer_ifaddrs *)nullptr)->ifa_dstaddr) ==
1206                sizeof(((ifaddrs *)nullptr)->ifa_ifu));
1207 COMPILER_CHECK(offsetof(__sanitizer_ifaddrs, ifa_dstaddr) ==
1208                offsetof(ifaddrs, ifa_ifu));
1209 # endif // SANITIZER_FREEBSD
1210 #else
1211 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_dstaddr);
1212 #endif // SANITIZER_LINUX
1213 CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_data);
1214 #endif
1215 
1216 #if SANITIZER_GLIBC || SANITIZER_ANDROID
1217 COMPILER_CHECK(sizeof(__sanitizer_struct_mallinfo) == sizeof(struct mallinfo));
1218 #endif
1219 
1220 #if !SANITIZER_ANDROID
1221 CHECK_TYPE_SIZE(timeb);
1222 CHECK_SIZE_AND_OFFSET(timeb, time);
1223 CHECK_SIZE_AND_OFFSET(timeb, millitm);
1224 CHECK_SIZE_AND_OFFSET(timeb, timezone);
1225 CHECK_SIZE_AND_OFFSET(timeb, dstflag);
1226 #endif
1227 
1228 CHECK_TYPE_SIZE(passwd);
1229 CHECK_SIZE_AND_OFFSET(passwd, pw_name);
1230 CHECK_SIZE_AND_OFFSET(passwd, pw_passwd);
1231 CHECK_SIZE_AND_OFFSET(passwd, pw_uid);
1232 CHECK_SIZE_AND_OFFSET(passwd, pw_gid);
1233 CHECK_SIZE_AND_OFFSET(passwd, pw_dir);
1234 CHECK_SIZE_AND_OFFSET(passwd, pw_shell);
1235 
1236 #if !SANITIZER_ANDROID
1237 CHECK_SIZE_AND_OFFSET(passwd, pw_gecos);
1238 #endif
1239 
1240 #if SANITIZER_MAC
1241 CHECK_SIZE_AND_OFFSET(passwd, pw_change);
1242 CHECK_SIZE_AND_OFFSET(passwd, pw_expire);
1243 CHECK_SIZE_AND_OFFSET(passwd, pw_class);
1244 #endif
1245 
1246 
1247 CHECK_TYPE_SIZE(group);
1248 CHECK_SIZE_AND_OFFSET(group, gr_name);
1249 CHECK_SIZE_AND_OFFSET(group, gr_passwd);
1250 CHECK_SIZE_AND_OFFSET(group, gr_gid);
1251 CHECK_SIZE_AND_OFFSET(group, gr_mem);
1252 
1253 #if HAVE_RPC_XDR_H
1254 CHECK_TYPE_SIZE(XDR);
1255 CHECK_SIZE_AND_OFFSET(XDR, x_op);
1256 CHECK_SIZE_AND_OFFSET(XDR, x_ops);
1257 CHECK_SIZE_AND_OFFSET(XDR, x_public);
1258 CHECK_SIZE_AND_OFFSET(XDR, x_private);
1259 CHECK_SIZE_AND_OFFSET(XDR, x_base);
1260 CHECK_SIZE_AND_OFFSET(XDR, x_handy);
1261 COMPILER_CHECK(__sanitizer_XDR_ENCODE == XDR_ENCODE);
1262 COMPILER_CHECK(__sanitizer_XDR_DECODE == XDR_DECODE);
1263 COMPILER_CHECK(__sanitizer_XDR_FREE == XDR_FREE);
1264 #endif
1265 
1266 #if SANITIZER_GLIBC
1267 COMPILER_CHECK(sizeof(__sanitizer_FILE) <= sizeof(FILE));
1268 CHECK_SIZE_AND_OFFSET(FILE, _flags);
1269 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_ptr);
1270 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_end);
1271 CHECK_SIZE_AND_OFFSET(FILE, _IO_read_base);
1272 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_ptr);
1273 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_end);
1274 CHECK_SIZE_AND_OFFSET(FILE, _IO_write_base);
1275 CHECK_SIZE_AND_OFFSET(FILE, _IO_buf_base);
1276 CHECK_SIZE_AND_OFFSET(FILE, _IO_buf_end);
1277 CHECK_SIZE_AND_OFFSET(FILE, _IO_save_base);
1278 CHECK_SIZE_AND_OFFSET(FILE, _IO_backup_base);
1279 CHECK_SIZE_AND_OFFSET(FILE, _IO_save_end);
1280 CHECK_SIZE_AND_OFFSET(FILE, _markers);
1281 CHECK_SIZE_AND_OFFSET(FILE, _chain);
1282 CHECK_SIZE_AND_OFFSET(FILE, _fileno);
1283 
1284 COMPILER_CHECK(sizeof(__sanitizer__obstack_chunk) <= sizeof(_obstack_chunk));
1285 CHECK_SIZE_AND_OFFSET(_obstack_chunk, limit);
1286 CHECK_SIZE_AND_OFFSET(_obstack_chunk, prev);
1287 CHECK_TYPE_SIZE(obstack);
1288 CHECK_SIZE_AND_OFFSET(obstack, chunk_size);
1289 CHECK_SIZE_AND_OFFSET(obstack, chunk);
1290 CHECK_SIZE_AND_OFFSET(obstack, object_base);
1291 CHECK_SIZE_AND_OFFSET(obstack, next_free);
1292 
1293 CHECK_TYPE_SIZE(cookie_io_functions_t);
1294 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, read);
1295 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, write);
1296 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, seek);
1297 CHECK_SIZE_AND_OFFSET(cookie_io_functions_t, close);
1298 #endif  // SANITIZER_GLIBC
1299 
1300 #if SANITIZER_LINUX || SANITIZER_FREEBSD
1301 CHECK_TYPE_SIZE(sem_t);
1302 #endif
1303 
1304 #if SANITIZER_LINUX && defined(__arm__)
1305 COMPILER_CHECK(ARM_VFPREGS_SIZE == ARM_VFPREGS_SIZE_ASAN);
1306 #endif
1307 
1308 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_MAC
1309