1 //===-- sanitizer_platform_limits_posix.h ---------------------------------===//
2 //
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
5 //
6 //===----------------------------------------------------------------------===//
7 //
8 // This file is a part of Sanitizer common code.
9 //
10 // Sizes and layouts of platform-specific POSIX data structures.
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef SANITIZER_PLATFORM_LIMITS_POSIX_H
14 #define SANITIZER_PLATFORM_LIMITS_POSIX_H
15 
16 #if SANITIZER_NETBSD
17 #define _SYS_SIGNAL_H_
18 #include <sys/param.h>
19 #undef _SYS_SIGNAL_H_
20 #endif
21 
22 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC
23 
24 #include "sanitizer_internal_defs.h"
25 #include "sanitizer_platform.h"
26 
27 #if SANITIZER_FREEBSD
28 // FreeBSD's dlopen() returns a pointer to an Obj_Entry structure that
29 // incorporates the map structure.
30 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) \
31     ((link_map*)((handle) == nullptr ? nullptr : ((char*)(handle) + 560)))
32 // Get sys/_types.h, because that tells us whether 64-bit inodes are
33 // used in struct dirent below.
34 #include <sys/_types.h>
35 #else
36 # define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) ((link_map*)(handle))
37 #endif  // !SANITIZER_FREEBSD
38 
39 #ifndef __GLIBC_PREREQ
40 #define __GLIBC_PREREQ(x, y) 0
41 #endif
42 
43 namespace __sanitizer {
44   extern unsigned struct_utsname_sz;
45   extern unsigned struct_stat_sz;
46 #if !SANITIZER_FREEBSD && !SANITIZER_IOS && !SANITIZER_NETBSD
47   extern unsigned struct_stat64_sz;
48 #endif
49   extern unsigned struct_rusage_sz;
50   extern unsigned siginfo_t_sz;
51   extern unsigned struct_itimerval_sz;
52   extern unsigned pthread_t_sz;
53   extern unsigned pthread_mutex_t_sz;
54   extern unsigned pthread_cond_t_sz;
55   extern unsigned pid_t_sz;
56   extern unsigned timeval_sz;
57   extern unsigned uid_t_sz;
58   extern unsigned gid_t_sz;
59   extern unsigned mbstate_t_sz;
60   extern unsigned struct_timezone_sz;
61   extern unsigned struct_tms_sz;
62   extern unsigned struct_itimerspec_sz;
63   extern unsigned struct_sigevent_sz;
64   extern unsigned struct_sched_param_sz;
65   extern unsigned struct_statfs64_sz;
66 
67 #if !SANITIZER_ANDROID
68   extern unsigned struct_statfs_sz;
69   extern unsigned struct_sockaddr_sz;
70   extern unsigned ucontext_t_sz;
71 #endif // !SANITIZER_ANDROID
72 
73 #if SANITIZER_LINUX
74 
75 #if defined(__x86_64__)
76   const unsigned struct_kernel_stat_sz = 144;
77   const unsigned struct_kernel_stat64_sz = 0;
78 #elif defined(__i386__)
79   const unsigned struct_kernel_stat_sz = 64;
80   const unsigned struct_kernel_stat64_sz = 96;
81 #elif defined(__arm__)
82   const unsigned struct_kernel_stat_sz = 64;
83   const unsigned struct_kernel_stat64_sz = 104;
84 #elif defined(__aarch64__)
85   const unsigned struct_kernel_stat_sz = 128;
86   const unsigned struct_kernel_stat64_sz = 104;
87 #elif defined(__powerpc__) && !defined(__powerpc64__)
88   const unsigned struct_kernel_stat_sz = 72;
89   const unsigned struct_kernel_stat64_sz = 104;
90 #elif defined(__powerpc64__)
91   const unsigned struct_kernel_stat_sz = 144;
92   const unsigned struct_kernel_stat64_sz = 104;
93 #elif defined(__mips__)
94   const unsigned struct_kernel_stat_sz =
95                  SANITIZER_ANDROID ? FIRST_32_SECOND_64(104, 128) :
96                                      FIRST_32_SECOND_64(144, 216);
97   const unsigned struct_kernel_stat64_sz = 104;
98 #elif defined(__s390__) && !defined(__s390x__)
99   const unsigned struct_kernel_stat_sz = 64;
100   const unsigned struct_kernel_stat64_sz = 104;
101 #elif defined(__s390x__)
102   const unsigned struct_kernel_stat_sz = 144;
103   const unsigned struct_kernel_stat64_sz = 0;
104 #elif defined(__sparc__) && defined(__arch64__)
105   const unsigned struct___old_kernel_stat_sz = 0;
106   const unsigned struct_kernel_stat_sz = 104;
107   const unsigned struct_kernel_stat64_sz = 144;
108 #elif defined(__sparc__) && !defined(__arch64__)
109   const unsigned struct___old_kernel_stat_sz = 0;
110   const unsigned struct_kernel_stat_sz = 64;
111   const unsigned struct_kernel_stat64_sz = 104;
112 #endif
113   struct __sanitizer_perf_event_attr {
114     unsigned type;
115     unsigned size;
116     // More fields that vary with the kernel version.
117   };
118 
119   extern unsigned struct_epoll_event_sz;
120   extern unsigned struct_sysinfo_sz;
121   extern unsigned __user_cap_header_struct_sz;
122   extern unsigned __user_cap_data_struct_sz;
123   extern unsigned struct_new_utsname_sz;
124   extern unsigned struct_old_utsname_sz;
125   extern unsigned struct_oldold_utsname_sz;
126 
127   const unsigned struct_kexec_segment_sz = 4 * sizeof(unsigned long);
128 #endif  // SANITIZER_LINUX
129 
130 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
131 
132 #if defined(__powerpc64__) || defined(__s390__)
133   const unsigned struct___old_kernel_stat_sz = 0;
134 #elif !defined(__sparc__)
135   const unsigned struct___old_kernel_stat_sz = 32;
136 #endif
137 
138   extern unsigned struct_rlimit_sz;
139   extern unsigned struct_utimbuf_sz;
140   extern unsigned struct_timespec_sz;
141 
142   struct __sanitizer_iocb {
143     u64   aio_data;
144     u32   aio_key_or_aio_reserved1; // Simply crazy.
145     u32   aio_reserved1_or_aio_key; // Luckily, we don't need these.
146     u16   aio_lio_opcode;
147     s16   aio_reqprio;
148     u32   aio_fildes;
149     u64   aio_buf;
150     u64   aio_nbytes;
151     s64   aio_offset;
152     u64   aio_reserved2;
153     u64   aio_reserved3;
154   };
155 
156   struct __sanitizer_io_event {
157     u64 data;
158     u64 obj;
159     u64 res;
160     u64 res2;
161   };
162 
163   const unsigned iocb_cmd_pread = 0;
164   const unsigned iocb_cmd_pwrite = 1;
165   const unsigned iocb_cmd_preadv = 7;
166   const unsigned iocb_cmd_pwritev = 8;
167 
168   struct __sanitizer___sysctl_args {
169     int *name;
170     int nlen;
171     void *oldval;
172     uptr *oldlenp;
173     void *newval;
174     uptr newlen;
175     unsigned long ___unused[4];
176   };
177 
178   const unsigned old_sigset_t_sz = sizeof(unsigned long);
179 
180   struct __sanitizer_sem_t {
181 #if SANITIZER_ANDROID && defined(_LP64)
182     int data[4];
183 #elif SANITIZER_ANDROID && !defined(_LP64)
184     int data;
185 #elif SANITIZER_LINUX
186     uptr data[4];
187 #elif SANITIZER_FREEBSD
188     u32 data[4];
189 #endif
190   };
191 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
192 
193 #if SANITIZER_ANDROID
194   struct __sanitizer_struct_mallinfo {
195     uptr v[10];
196   };
197 #endif
198 
199 #if SANITIZER_LINUX && !SANITIZER_ANDROID
200   struct __sanitizer_struct_mallinfo {
201     int v[10];
202   };
203 
204   extern unsigned struct_ustat_sz;
205   extern unsigned struct_rlimit64_sz;
206   extern unsigned struct_statvfs64_sz;
207 
208   struct __sanitizer_ipc_perm {
209     int __key;
210     int uid;
211     int gid;
212     int cuid;
213     int cgid;
214 #ifdef __powerpc__
215     unsigned mode;
216     unsigned __seq;
217     u64 __unused1;
218     u64 __unused2;
219 #elif defined(__sparc__)
220     unsigned mode;
221     unsigned short __pad2;
222     unsigned short __seq;
223     unsigned long long __unused1;
224     unsigned long long __unused2;
225 #else
226     unsigned int mode;
227     unsigned short __seq;
228     unsigned short __pad2;
229 #if defined(__x86_64__) && !defined(_LP64)
230     u64 __unused1;
231     u64 __unused2;
232 #else
233     unsigned long __unused1;
234     unsigned long __unused2;
235 #endif
236 #endif
237   };
238 
239   struct __sanitizer_shmid_ds {
240     __sanitizer_ipc_perm shm_perm;
241   #if defined(__sparc__)
242   #if !defined(__arch64__)
243     u32 __pad1;
244   #endif
245     long shm_atime;
246   #if !defined(__arch64__)
247     u32 __pad2;
248   #endif
249     long shm_dtime;
250   #if !defined(__arch64__)
251     u32 __pad3;
252   #endif
253     long shm_ctime;
254     uptr shm_segsz;
255     int shm_cpid;
256     int shm_lpid;
257     unsigned long shm_nattch;
258     unsigned long __glibc_reserved1;
259     unsigned long __glibc_reserved2;
260   #else
261   #ifndef __powerpc__
262     uptr shm_segsz;
263   #elif !defined(__powerpc64__)
264     uptr __unused0;
265   #endif
266   #if defined(__x86_64__) && !defined(_LP64)
267     u64 shm_atime;
268     u64 shm_dtime;
269     u64 shm_ctime;
270   #else
271     uptr shm_atime;
272   #if !defined(_LP64) && !defined(__mips__)
273     uptr __unused1;
274   #endif
275     uptr shm_dtime;
276   #if !defined(_LP64) && !defined(__mips__)
277     uptr __unused2;
278   #endif
279     uptr shm_ctime;
280   #if !defined(_LP64) && !defined(__mips__)
281     uptr __unused3;
282   #endif
283   #endif
284   #ifdef __powerpc__
285     uptr shm_segsz;
286   #endif
287     int shm_cpid;
288     int shm_lpid;
289   #if defined(__x86_64__) && !defined(_LP64)
290     u64 shm_nattch;
291     u64 __unused4;
292     u64 __unused5;
293   #else
294     uptr shm_nattch;
295     uptr __unused4;
296     uptr __unused5;
297   #endif
298 #endif
299   };
300 #elif SANITIZER_FREEBSD
301   struct __sanitizer_ipc_perm {
302     unsigned int cuid;
303     unsigned int cgid;
304     unsigned int uid;
305     unsigned int gid;
306     unsigned short mode;
307     unsigned short seq;
308     long key;
309   };
310   struct __sanitizer_shmid_ds {
311     __sanitizer_ipc_perm shm_perm;
312     unsigned long shm_segsz;
313     unsigned int shm_lpid;
314     unsigned int shm_cpid;
315     int shm_nattch;
316     unsigned long shm_atime;
317     unsigned long shm_dtime;
318     unsigned long shm_ctime;
319   };
320 #elif SANITIZER_NETBSD
321   struct __sanitizer_ipc_perm {
322     unsigned int uid;
323     unsigned int gid;
324     unsigned int cuid;
325     unsigned int cgid;
326     unsigned int mode;
327     unsigned short _seq;
328     long _key;
329   };
330 
331   struct __sanitizer_shmid_ds {
332     __sanitizer_ipc_perm shm_perm;
333     unsigned long shm_segsz;
334     unsigned int shm_lpid;
335     unsigned int shm_cpid;
336     int shm_nattch;
337     long long shm_atime;
338     long long shm_dtime;
339     long long shm_ctime;
340     void *_shm_internal;
341   };
342 #endif
343 
344 #if (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
345   extern unsigned struct_msqid_ds_sz;
346   extern unsigned struct_mq_attr_sz;
347   extern unsigned struct_timex_sz;
348   extern unsigned struct_statvfs_sz;
349 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
350 
351   struct __sanitizer_iovec {
352     void *iov_base;
353     uptr iov_len;
354   };
355 
356 #if !SANITIZER_ANDROID
357   struct __sanitizer_ifaddrs {
358     struct __sanitizer_ifaddrs *ifa_next;
359     char *ifa_name;
360     unsigned int ifa_flags;
361     void *ifa_addr;    // (struct sockaddr *)
362     void *ifa_netmask; // (struct sockaddr *)
363     // This is a union on Linux.
364 # ifdef ifa_dstaddr
365 # undef ifa_dstaddr
366 # endif
367     void *ifa_dstaddr; // (struct sockaddr *)
368     void *ifa_data;
369 # if SANITIZER_NETBSD
370 #  if __NetBSD_Prereq__(7, 99, 39)
371     unsigned int ifa_addrflags;
372 #  endif
373 # endif
374   };
375 #endif  // !SANITIZER_ANDROID
376 
377 #if SANITIZER_MAC
378   typedef unsigned long __sanitizer_pthread_key_t;
379 #else
380   typedef unsigned __sanitizer_pthread_key_t;
381 #endif
382 
383 #if SANITIZER_LINUX && !SANITIZER_ANDROID
384 
385   struct __sanitizer_XDR {
386     int x_op;
387     void *x_ops;
388     uptr x_public;
389     uptr x_private;
390     uptr x_base;
391     unsigned x_handy;
392   };
393 
394   const int __sanitizer_XDR_ENCODE = 0;
395   const int __sanitizer_XDR_DECODE = 1;
396   const int __sanitizer_XDR_FREE = 2;
397 #endif
398 
399   struct __sanitizer_passwd {
400     char *pw_name;
401     char *pw_passwd;
402     int pw_uid;
403     int pw_gid;
404 #if SANITIZER_NETBSD
405     long long pw_change;
406 #elif SANITIZER_MAC || SANITIZER_FREEBSD
407     long pw_change;
408 #endif
409 #if SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD
410     char *pw_class;
411 #endif
412 #if !(SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32))
413     char *pw_gecos;
414 #endif
415     char *pw_dir;
416     char *pw_shell;
417 #if SANITIZER_MAC || SANITIZER_FREEBSD
418     long pw_expire;
419 #elif SANITIZER_NETBSD
420     long long pw_expire;
421 #endif
422 #if SANITIZER_FREEBSD
423     int pw_fields;
424 #endif
425   };
426 
427   struct __sanitizer_group {
428     char *gr_name;
429     char *gr_passwd;
430     int gr_gid;
431     char **gr_mem;
432   };
433 
434 #if (defined(__x86_64__) && !defined(_LP64)) || SANITIZER_NETBSD
435   typedef long long __sanitizer_time_t;
436 #else
437   typedef long __sanitizer_time_t;
438 #endif
439 
440   typedef long __sanitizer_suseconds_t;
441 
442   struct __sanitizer_timeval {
443     __sanitizer_time_t tv_sec;
444     __sanitizer_suseconds_t tv_usec;
445   };
446 
447   struct __sanitizer_itimerval {
448     struct __sanitizer_timeval it_interval;
449     struct __sanitizer_timeval it_value;
450   };
451 
452   struct __sanitizer_timeb {
453     __sanitizer_time_t time;
454     unsigned short millitm;
455     short timezone;
456     short dstflag;
457   };
458 
459   struct __sanitizer_ether_addr {
460     u8 octet[6];
461   };
462 
463   struct __sanitizer_tm {
464     int tm_sec;
465     int tm_min;
466     int tm_hour;
467     int tm_mday;
468     int tm_mon;
469     int tm_year;
470     int tm_wday;
471     int tm_yday;
472     int tm_isdst;
473     long int tm_gmtoff;
474     const char *tm_zone;
475   };
476 
477 #if SANITIZER_LINUX
478   struct __sanitizer_mntent {
479     char *mnt_fsname;
480     char *mnt_dir;
481     char *mnt_type;
482     char *mnt_opts;
483     int mnt_freq;
484     int mnt_passno;
485   };
486 
487   struct __sanitizer_file_handle {
488     unsigned int handle_bytes;
489     int handle_type;
490     unsigned char f_handle[1];  // variable sized
491   };
492 #endif
493 
494 #if SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD
495   struct __sanitizer_msghdr {
496     void *msg_name;
497     unsigned msg_namelen;
498     struct __sanitizer_iovec *msg_iov;
499     unsigned msg_iovlen;
500     void *msg_control;
501     unsigned msg_controllen;
502     int msg_flags;
503   };
504   struct __sanitizer_cmsghdr {
505     unsigned cmsg_len;
506     int cmsg_level;
507     int cmsg_type;
508   };
509 #else
510   struct __sanitizer_msghdr {
511     void *msg_name;
512     unsigned msg_namelen;
513     struct __sanitizer_iovec *msg_iov;
514     uptr msg_iovlen;
515     void *msg_control;
516     uptr msg_controllen;
517     int msg_flags;
518   };
519   struct __sanitizer_cmsghdr {
520     uptr cmsg_len;
521     int cmsg_level;
522     int cmsg_type;
523   };
524 #endif
525 
526 #if SANITIZER_LINUX
527   struct __sanitizer_mmsghdr {
528     __sanitizer_msghdr msg_hdr;
529     unsigned int msg_len;
530   };
531 #endif
532 
533 #if SANITIZER_MAC
534   struct __sanitizer_dirent {
535     unsigned long long d_ino;
536     unsigned long long d_seekoff;
537     unsigned short d_reclen;
538     // more fields that we don't care about
539   };
540 #elif SANITIZER_FREEBSD
541   struct __sanitizer_dirent {
542 #if defined(__INO64)
543     unsigned long long d_fileno;
544     unsigned long long d_off;
545 #else
546     unsigned int d_fileno;
547 #endif
548     unsigned short d_reclen;
549     // more fields that we don't care about
550   };
551 #elif SANITIZER_NETBSD
552   struct __sanitizer_dirent {
553     unsigned long long d_fileno;
554     unsigned short d_reclen;
555     // more fields that we don't care about
556   };
557 #elif SANITIZER_ANDROID || defined(__x86_64__)
558   struct __sanitizer_dirent {
559     unsigned long long d_ino;
560     unsigned long long d_off;
561     unsigned short d_reclen;
562     // more fields that we don't care about
563   };
564 #else
565   struct __sanitizer_dirent {
566     uptr d_ino;
567     uptr d_off;
568     unsigned short d_reclen;
569     // more fields that we don't care about
570   };
571 #endif
572 
573 #if SANITIZER_LINUX && !SANITIZER_ANDROID
574   struct __sanitizer_dirent64 {
575     unsigned long long d_ino;
576     unsigned long long d_off;
577     unsigned short d_reclen;
578     // more fields that we don't care about
579   };
580 #endif
581 
582 // 'clock_t' is 32 bits wide on x64 FreeBSD
583 #if SANITIZER_FREEBSD || SANITIZER_NETBSD
584   typedef int __sanitizer_clock_t;
585 #elif defined(__x86_64__) && !defined(_LP64)
586   typedef long long __sanitizer_clock_t;
587 #else
588   typedef long __sanitizer_clock_t;
589 #endif
590 
591 #if SANITIZER_LINUX || SANITIZER_FREEBSD
592   typedef int __sanitizer_clockid_t;
593 #endif
594 
595 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
596 #if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__)\
597                    || defined(__mips__)
598   typedef unsigned __sanitizer___kernel_uid_t;
599   typedef unsigned __sanitizer___kernel_gid_t;
600 #else
601   typedef unsigned short __sanitizer___kernel_uid_t;
602   typedef unsigned short __sanitizer___kernel_gid_t;
603 #endif
604 #if defined(__x86_64__) && !defined(_LP64)
605   typedef long long __sanitizer___kernel_off_t;
606 #else
607   typedef long __sanitizer___kernel_off_t;
608 #endif
609 
610 #if defined(__powerpc__) || defined(__mips__)
611   typedef unsigned int __sanitizer___kernel_old_uid_t;
612   typedef unsigned int __sanitizer___kernel_old_gid_t;
613 #else
614   typedef unsigned short __sanitizer___kernel_old_uid_t;
615   typedef unsigned short __sanitizer___kernel_old_gid_t;
616 #endif
617 
618   typedef long long __sanitizer___kernel_loff_t;
619   typedef struct {
620     unsigned long fds_bits[1024 / (8 * sizeof(long))];
621   } __sanitizer___kernel_fd_set;
622 #endif
623 
624   // This thing depends on the platform. We are only interested in the upper
625   // limit. Verified with a compiler assert in .cc.
626   const int pthread_attr_t_max_sz = 128;
627   union __sanitizer_pthread_attr_t {
628     char size[pthread_attr_t_max_sz]; // NOLINT
629     void *align;
630   };
631 
632 #if SANITIZER_ANDROID
633 # if SANITIZER_MIPS
634   typedef unsigned long __sanitizer_sigset_t[16/sizeof(unsigned long)];
635 # else
636   typedef unsigned long __sanitizer_sigset_t;
637 # endif
638 #elif SANITIZER_MAC
639   typedef unsigned __sanitizer_sigset_t;
640 #elif SANITIZER_LINUX
641   struct __sanitizer_sigset_t {
642     // The size is determined by looking at sizeof of real sigset_t on linux.
643     uptr val[128 / sizeof(uptr)];
644   };
645 #elif SANITIZER_FREEBSD || SANITIZER_NETBSD
646   struct __sanitizer_sigset_t {
647      // uint32_t * 4
648      unsigned int __bits[4];
649   };
650 #endif
651 
652   struct __sanitizer_siginfo {
653     // The size is determined by looking at sizeof of real siginfo_t on linux.
654     u64 opaque[128 / sizeof(u64)];
655   };
656 
657   using __sanitizer_sighandler_ptr = void (*)(int sig);
658   using __sanitizer_sigactionhandler_ptr =
659       void (*)(int sig, __sanitizer_siginfo *siginfo, void *uctx);
660 
661   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
662 #if SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 64)
663   struct __sanitizer_sigaction {
664     unsigned sa_flags;
665     union {
666       __sanitizer_sigactionhandler_ptr sigaction;
667       __sanitizer_sighandler_ptr handler;
668     };
669     __sanitizer_sigset_t sa_mask;
670     void (*sa_restorer)();
671   };
672 #elif SANITIZER_ANDROID && SANITIZER_MIPS32  // check this before WORDSIZE == 32
673   struct __sanitizer_sigaction {
674     unsigned sa_flags;
675     union {
676       __sanitizer_sigactionhandler_ptr sigaction;
677       __sanitizer_sighandler_ptr handler;
678     };
679     __sanitizer_sigset_t sa_mask;
680   };
681 #elif SANITIZER_ANDROID && (SANITIZER_WORDSIZE == 32)
682   struct __sanitizer_sigaction {
683     union {
684       __sanitizer_sigactionhandler_ptr sigaction;
685       __sanitizer_sighandler_ptr handler;
686     };
687     __sanitizer_sigset_t sa_mask;
688     uptr sa_flags;
689     void (*sa_restorer)();
690   };
691 #elif SANITIZER_NETBSD
692   struct __sanitizer_sigaction {
693     union {
694       void (*sigaction)(int sig, void *siginfo, void *uctx);
695       void (*handler)(int sig);
696     };
697     __sanitizer_sigset_t sa_mask;
698     int sa_flags;
699   };
700 #else // !SANITIZER_ANDROID
701   struct __sanitizer_sigaction {
702 #if defined(__mips__) && !SANITIZER_FREEBSD
703     unsigned int sa_flags;
704 #endif
705     union {
706       __sanitizer_sigactionhandler_ptr sigaction;
707       __sanitizer_sighandler_ptr handler;
708     };
709 #if SANITIZER_FREEBSD
710     int sa_flags;
711     __sanitizer_sigset_t sa_mask;
712 #else
713 #if defined(__s390x__)
714     int sa_resv;
715 #else
716     __sanitizer_sigset_t sa_mask;
717 #endif
718 #ifndef __mips__
719 #if defined(__sparc__)
720 #if __GLIBC_PREREQ (2, 20)
721     // On sparc glibc 2.19 and earlier sa_flags was unsigned long.
722 #if defined(__arch64__)
723     // To maintain ABI compatibility on sparc64 when switching to an int,
724     // __glibc_reserved0 was added.
725     int __glibc_reserved0;
726 #endif
727     int sa_flags;
728 #else
729     unsigned long sa_flags;
730 #endif
731 #else
732     int sa_flags;
733 #endif
734 #endif
735 #endif
736 #if SANITIZER_LINUX
737     void (*sa_restorer)();
738 #endif
739 #if defined(__mips__) && (SANITIZER_WORDSIZE == 32)
740     int sa_resv[1];
741 #endif
742 #if defined(__s390x__)
743     __sanitizer_sigset_t sa_mask;
744 #endif
745   };
746 #endif // !SANITIZER_ANDROID
747 
748 #if SANITIZER_FREEBSD || SANITIZER_NETBSD
749   typedef __sanitizer_sigset_t __sanitizer_kernel_sigset_t;
750 #elif defined(__mips__)
751   struct __sanitizer_kernel_sigset_t {
752     uptr sig[2];
753   };
754 #else
755   struct __sanitizer_kernel_sigset_t {
756     u8 sig[8];
757   };
758 #endif
759 
760   // Linux system headers define the 'sa_handler' and 'sa_sigaction' macros.
761 #if SANITIZER_MIPS
762   struct __sanitizer_kernel_sigaction_t {
763     unsigned int sa_flags;
764     union {
765       void (*handler)(int signo);
766       void (*sigaction)(int signo, __sanitizer_siginfo *info, void *ctx);
767     };
768     __sanitizer_kernel_sigset_t sa_mask;
769     void (*sa_restorer)(void);
770   };
771 #else
772   struct __sanitizer_kernel_sigaction_t {
773     union {
774       void (*handler)(int signo);
775       void (*sigaction)(int signo, __sanitizer_siginfo *info, void *ctx);
776     };
777     unsigned long sa_flags;
778     void (*sa_restorer)(void);
779     __sanitizer_kernel_sigset_t sa_mask;
780   };
781 #endif
782 
783   extern const uptr sig_ign;
784   extern const uptr sig_dfl;
785   extern const uptr sig_err;
786   extern const uptr sa_siginfo;
787 
788 #if SANITIZER_LINUX
789   extern int e_tabsz;
790 #endif
791 
792   extern int af_inet;
793   extern int af_inet6;
794   uptr __sanitizer_in_addr_sz(int af);
795 
796 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
797   struct __sanitizer_dl_phdr_info {
798     uptr dlpi_addr;
799     const char *dlpi_name;
800     const void *dlpi_phdr;
801     short dlpi_phnum;
802   };
803 
804   extern unsigned struct_ElfW_Phdr_sz;
805 #endif
806 
807   struct __sanitizer_addrinfo {
808     int ai_flags;
809     int ai_family;
810     int ai_socktype;
811     int ai_protocol;
812 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD
813 #if SANITIZER_NETBSD && defined(__sparc__) && defined(_LP64)
814     int __ai_pad0;
815 #endif
816     unsigned ai_addrlen;
817 #if SANITIZER_NETBSD && defined(__alpha__) || (defined(__i386__) && defined(_LP64))
818     int __ai_pad0;
819 #endif
820     char *ai_canonname;
821     void *ai_addr;
822 #else // LINUX
823     unsigned ai_addrlen;
824     void *ai_addr;
825     char *ai_canonname;
826 #endif
827     struct __sanitizer_addrinfo *ai_next;
828   };
829 
830   struct __sanitizer_hostent {
831     char *h_name;
832     char **h_aliases;
833     int h_addrtype;
834     int h_length;
835     char **h_addr_list;
836   };
837 
838   struct __sanitizer_pollfd {
839     int fd;
840     short events;
841     short revents;
842   };
843 
844 #if SANITIZER_ANDROID || SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD
845   typedef unsigned __sanitizer_nfds_t;
846 #else
847   typedef unsigned long __sanitizer_nfds_t;
848 #endif
849 
850 #if !SANITIZER_ANDROID
851 # if SANITIZER_LINUX
852   struct __sanitizer_glob_t {
853     uptr gl_pathc;
854     char **gl_pathv;
855     uptr gl_offs;
856     int gl_flags;
857 
858     void (*gl_closedir)(void *dirp);
859     void *(*gl_readdir)(void *dirp);
860     void *(*gl_opendir)(const char *);
861     int (*gl_lstat)(const char *, void *);
862     int (*gl_stat)(const char *, void *);
863   };
864 # elif SANITIZER_FREEBSD || SANITIZER_NETBSD
865   struct __sanitizer_glob_t {
866     uptr gl_pathc;
867     uptr gl_matchc;
868     uptr gl_offs;
869     int gl_flags;
870     char **gl_pathv;
871     int (*gl_errfunc)(const char*, int);
872     void (*gl_closedir)(void *dirp);
873     struct dirent *(*gl_readdir)(void *dirp);
874     void *(*gl_opendir)(const char*);
875     int (*gl_lstat)(const char*, void* /* struct stat* */);
876     int (*gl_stat)(const char*, void* /* struct stat* */);
877   };
878 # endif  // SANITIZER_FREEBSD || SANITIZER_NETBSD
879 
880 # if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
881   extern int glob_nomatch;
882   extern int glob_altdirfunc;
883 # endif
884 #endif  // !SANITIZER_ANDROID
885 
886   extern unsigned path_max;
887 
888   struct __sanitizer_wordexp_t {
889     uptr we_wordc;
890     char **we_wordv;
891     uptr we_offs;
892 #if SANITIZER_FREEBSD || SANITIZER_NETBSD
893     char *we_strings;
894     uptr we_nbytes;
895 #endif
896   };
897 
898 #if SANITIZER_LINUX && !SANITIZER_ANDROID
899   struct __sanitizer_FILE {
900     int _flags;
901     char *_IO_read_ptr;
902     char *_IO_read_end;
903     char *_IO_read_base;
904     char *_IO_write_base;
905     char *_IO_write_ptr;
906     char *_IO_write_end;
907     char *_IO_buf_base;
908     char *_IO_buf_end;
909     char *_IO_save_base;
910     char *_IO_backup_base;
911     char *_IO_save_end;
912     void *_markers;
913     __sanitizer_FILE *_chain;
914     int _fileno;
915   };
916 # define SANITIZER_HAS_STRUCT_FILE 1
917 #else
918   typedef void __sanitizer_FILE;
919 # define SANITIZER_HAS_STRUCT_FILE 0
920 #endif
921 
922 #if SANITIZER_LINUX && !SANITIZER_ANDROID && \
923   (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
924     defined(__powerpc64__) || defined(__aarch64__) || defined(__arm__) || \
925     defined(__s390__))
926   extern unsigned struct_user_regs_struct_sz;
927   extern unsigned struct_user_fpregs_struct_sz;
928   extern unsigned struct_user_fpxregs_struct_sz;
929   extern unsigned struct_user_vfpregs_struct_sz;
930 
931   extern int ptrace_peektext;
932   extern int ptrace_peekdata;
933   extern int ptrace_peekuser;
934   extern int ptrace_getregs;
935   extern int ptrace_setregs;
936   extern int ptrace_getfpregs;
937   extern int ptrace_setfpregs;
938   extern int ptrace_getfpxregs;
939   extern int ptrace_setfpxregs;
940   extern int ptrace_getvfpregs;
941   extern int ptrace_setvfpregs;
942   extern int ptrace_getsiginfo;
943   extern int ptrace_setsiginfo;
944   extern int ptrace_getregset;
945   extern int ptrace_setregset;
946   extern int ptrace_geteventmsg;
947 #endif
948 
949 #if (SANITIZER_LINUX || SANITIZER_FREEBSD) || SANITIZER_NETBSD && !SANITIZER_ANDROID
950   extern unsigned struct_shminfo_sz;
951   extern unsigned struct_shm_info_sz;
952   extern int shmctl_ipc_stat;
953   extern int shmctl_ipc_info;
954   extern int shmctl_shm_info;
955   extern int shmctl_shm_stat;
956 #endif
957 
958 #if !SANITIZER_MAC && !SANITIZER_FREEBSD
959   extern unsigned struct_utmp_sz;
960 #endif
961 #if !SANITIZER_ANDROID
962   extern unsigned struct_utmpx_sz;
963 #endif
964 
965   extern int map_fixed;
966 
967   // ioctl arguments
968   struct __sanitizer_ifconf {
969     int ifc_len;
970     union {
971       void *ifcu_req;
972     } ifc_ifcu;
973 #if SANITIZER_MAC
974   } __attribute__((packed));
975 #else
976   };
977 #endif
978 
979 #if SANITIZER_LINUX && !SANITIZER_ANDROID
980 struct __sanitizer__obstack_chunk {
981   char *limit;
982   struct __sanitizer__obstack_chunk *prev;
983 };
984 
985 struct __sanitizer_obstack {
986   long chunk_size;
987   struct __sanitizer__obstack_chunk *chunk;
988   char *object_base;
989   char *next_free;
990   uptr more_fields[7];
991 };
992 
993 typedef uptr (*__sanitizer_cookie_io_read)(void *cookie, char *buf, uptr size);
994 typedef uptr (*__sanitizer_cookie_io_write)(void *cookie, const char *buf,
995                                             uptr size);
996 typedef int (*__sanitizer_cookie_io_seek)(void *cookie, u64 *offset,
997                                           int whence);
998 typedef int (*__sanitizer_cookie_io_close)(void *cookie);
999 
1000 struct __sanitizer_cookie_io_functions_t {
1001   __sanitizer_cookie_io_read read;
1002   __sanitizer_cookie_io_write write;
1003   __sanitizer_cookie_io_seek seek;
1004   __sanitizer_cookie_io_close close;
1005 };
1006 #endif
1007 
1008 #define IOC_NRBITS 8
1009 #define IOC_TYPEBITS 8
1010 #if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__) || \
1011     defined(__sparc__)
1012 #define IOC_SIZEBITS 13
1013 #define IOC_DIRBITS 3
1014 #define IOC_NONE 1U
1015 #define IOC_WRITE 4U
1016 #define IOC_READ 2U
1017 #else
1018 #define IOC_SIZEBITS 14
1019 #define IOC_DIRBITS 2
1020 #define IOC_NONE 0U
1021 #define IOC_WRITE 1U
1022 #define IOC_READ 2U
1023 #endif
1024 #define IOC_NRMASK ((1 << IOC_NRBITS) - 1)
1025 #define IOC_TYPEMASK ((1 << IOC_TYPEBITS) - 1)
1026 #define IOC_SIZEMASK ((1 << IOC_SIZEBITS) - 1)
1027 #if defined(IOC_DIRMASK)
1028 #undef IOC_DIRMASK
1029 #endif
1030 #define IOC_DIRMASK ((1 << IOC_DIRBITS) - 1)
1031 #define IOC_NRSHIFT 0
1032 #define IOC_TYPESHIFT (IOC_NRSHIFT + IOC_NRBITS)
1033 #define IOC_SIZESHIFT (IOC_TYPESHIFT + IOC_TYPEBITS)
1034 #define IOC_DIRSHIFT (IOC_SIZESHIFT + IOC_SIZEBITS)
1035 #define EVIOC_EV_MAX 0x1f
1036 #define EVIOC_ABS_MAX 0x3f
1037 
1038 #define IOC_DIR(nr) (((nr) >> IOC_DIRSHIFT) & IOC_DIRMASK)
1039 #define IOC_TYPE(nr) (((nr) >> IOC_TYPESHIFT) & IOC_TYPEMASK)
1040 #define IOC_NR(nr) (((nr) >> IOC_NRSHIFT) & IOC_NRMASK)
1041 
1042 #if defined(__sparc__)
1043 // In sparc the 14 bits SIZE field overlaps with the
1044 // least significant bit of DIR, so either IOC_READ or
1045 // IOC_WRITE shall be 1 in order to get a non-zero SIZE.
1046 #define IOC_SIZE(nr) \
1047   ((((((nr) >> 29) & 0x7) & (4U | 2U)) == 0) ? 0 : (((nr) >> 16) & 0x3fff))
1048 #else
1049 #define IOC_SIZE(nr) (((nr) >> IOC_SIZESHIFT) & IOC_SIZEMASK)
1050 #endif
1051 
1052   extern unsigned struct_ifreq_sz;
1053   extern unsigned struct_termios_sz;
1054   extern unsigned struct_winsize_sz;
1055 
1056 #if SANITIZER_LINUX
1057   extern unsigned struct_arpreq_sz;
1058   extern unsigned struct_cdrom_msf_sz;
1059   extern unsigned struct_cdrom_multisession_sz;
1060   extern unsigned struct_cdrom_read_audio_sz;
1061   extern unsigned struct_cdrom_subchnl_sz;
1062   extern unsigned struct_cdrom_ti_sz;
1063   extern unsigned struct_cdrom_tocentry_sz;
1064   extern unsigned struct_cdrom_tochdr_sz;
1065   extern unsigned struct_cdrom_volctrl_sz;
1066   extern unsigned struct_ff_effect_sz;
1067   extern unsigned struct_floppy_drive_params_sz;
1068   extern unsigned struct_floppy_drive_struct_sz;
1069   extern unsigned struct_floppy_fdc_state_sz;
1070   extern unsigned struct_floppy_max_errors_sz;
1071   extern unsigned struct_floppy_raw_cmd_sz;
1072   extern unsigned struct_floppy_struct_sz;
1073   extern unsigned struct_floppy_write_errors_sz;
1074   extern unsigned struct_format_descr_sz;
1075   extern unsigned struct_hd_driveid_sz;
1076   extern unsigned struct_hd_geometry_sz;
1077   extern unsigned struct_input_absinfo_sz;
1078   extern unsigned struct_input_id_sz;
1079   extern unsigned struct_mtpos_sz;
1080   extern unsigned struct_termio_sz;
1081   extern unsigned struct_vt_consize_sz;
1082   extern unsigned struct_vt_sizes_sz;
1083   extern unsigned struct_vt_stat_sz;
1084 #endif  // SANITIZER_LINUX
1085 
1086 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
1087   extern unsigned struct_copr_buffer_sz;
1088   extern unsigned struct_copr_debug_buf_sz;
1089   extern unsigned struct_copr_msg_sz;
1090   extern unsigned struct_midi_info_sz;
1091   extern unsigned struct_mtget_sz;
1092   extern unsigned struct_mtop_sz;
1093   extern unsigned struct_rtentry_sz;
1094   extern unsigned struct_sbi_instrument_sz;
1095   extern unsigned struct_seq_event_rec_sz;
1096   extern unsigned struct_synth_info_sz;
1097   extern unsigned struct_vt_mode_sz;
1098 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
1099 
1100 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1101   extern unsigned struct_ax25_parms_struct_sz;
1102   extern unsigned struct_cyclades_monitor_sz;
1103   extern unsigned struct_input_keymap_entry_sz;
1104   extern unsigned struct_ipx_config_data_sz;
1105   extern unsigned struct_kbdiacrs_sz;
1106   extern unsigned struct_kbentry_sz;
1107   extern unsigned struct_kbkeycode_sz;
1108   extern unsigned struct_kbsentry_sz;
1109   extern unsigned struct_mtconfiginfo_sz;
1110   extern unsigned struct_nr_parms_struct_sz;
1111   extern unsigned struct_scc_modem_sz;
1112   extern unsigned struct_scc_stat_sz;
1113   extern unsigned struct_serial_multiport_struct_sz;
1114   extern unsigned struct_serial_struct_sz;
1115   extern unsigned struct_sockaddr_ax25_sz;
1116   extern unsigned struct_unimapdesc_sz;
1117   extern unsigned struct_unimapinit_sz;
1118 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
1119 
1120 #if (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
1121   extern unsigned struct_audio_buf_info_sz;
1122   extern unsigned struct_ppp_stats_sz;
1123 #endif  // (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
1124 
1125 #if !SANITIZER_ANDROID && !SANITIZER_MAC
1126   extern unsigned struct_sioc_sg_req_sz;
1127   extern unsigned struct_sioc_vif_req_sz;
1128 #endif
1129 
1130   // ioctl request identifiers
1131 
1132   // A special value to mark ioctls that are not present on the target platform,
1133   // when it can not be determined without including any system headers.
1134   extern const unsigned IOCTL_NOT_PRESENT;
1135 
1136   extern unsigned IOCTL_FIOASYNC;
1137   extern unsigned IOCTL_FIOCLEX;
1138   extern unsigned IOCTL_FIOGETOWN;
1139   extern unsigned IOCTL_FIONBIO;
1140   extern unsigned IOCTL_FIONCLEX;
1141   extern unsigned IOCTL_FIOSETOWN;
1142   extern unsigned IOCTL_SIOCADDMULTI;
1143   extern unsigned IOCTL_SIOCATMARK;
1144   extern unsigned IOCTL_SIOCDELMULTI;
1145   extern unsigned IOCTL_SIOCGIFADDR;
1146   extern unsigned IOCTL_SIOCGIFBRDADDR;
1147   extern unsigned IOCTL_SIOCGIFCONF;
1148   extern unsigned IOCTL_SIOCGIFDSTADDR;
1149   extern unsigned IOCTL_SIOCGIFFLAGS;
1150   extern unsigned IOCTL_SIOCGIFMETRIC;
1151   extern unsigned IOCTL_SIOCGIFMTU;
1152   extern unsigned IOCTL_SIOCGIFNETMASK;
1153   extern unsigned IOCTL_SIOCGPGRP;
1154   extern unsigned IOCTL_SIOCSIFADDR;
1155   extern unsigned IOCTL_SIOCSIFBRDADDR;
1156   extern unsigned IOCTL_SIOCSIFDSTADDR;
1157   extern unsigned IOCTL_SIOCSIFFLAGS;
1158   extern unsigned IOCTL_SIOCSIFMETRIC;
1159   extern unsigned IOCTL_SIOCSIFMTU;
1160   extern unsigned IOCTL_SIOCSIFNETMASK;
1161   extern unsigned IOCTL_SIOCSPGRP;
1162   extern unsigned IOCTL_TIOCCONS;
1163   extern unsigned IOCTL_TIOCEXCL;
1164   extern unsigned IOCTL_TIOCGETD;
1165   extern unsigned IOCTL_TIOCGPGRP;
1166   extern unsigned IOCTL_TIOCGWINSZ;
1167   extern unsigned IOCTL_TIOCMBIC;
1168   extern unsigned IOCTL_TIOCMBIS;
1169   extern unsigned IOCTL_TIOCMGET;
1170   extern unsigned IOCTL_TIOCMSET;
1171   extern unsigned IOCTL_TIOCNOTTY;
1172   extern unsigned IOCTL_TIOCNXCL;
1173   extern unsigned IOCTL_TIOCOUTQ;
1174   extern unsigned IOCTL_TIOCPKT;
1175   extern unsigned IOCTL_TIOCSCTTY;
1176   extern unsigned IOCTL_TIOCSETD;
1177   extern unsigned IOCTL_TIOCSPGRP;
1178   extern unsigned IOCTL_TIOCSTI;
1179   extern unsigned IOCTL_TIOCSWINSZ;
1180 #if (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
1181   extern unsigned IOCTL_SIOCGETSGCNT;
1182   extern unsigned IOCTL_SIOCGETVIFCNT;
1183 #endif
1184 #if SANITIZER_LINUX
1185   extern unsigned IOCTL_EVIOCGABS;
1186   extern unsigned IOCTL_EVIOCGBIT;
1187   extern unsigned IOCTL_EVIOCGEFFECTS;
1188   extern unsigned IOCTL_EVIOCGID;
1189   extern unsigned IOCTL_EVIOCGKEY;
1190   extern unsigned IOCTL_EVIOCGKEYCODE;
1191   extern unsigned IOCTL_EVIOCGLED;
1192   extern unsigned IOCTL_EVIOCGNAME;
1193   extern unsigned IOCTL_EVIOCGPHYS;
1194   extern unsigned IOCTL_EVIOCGRAB;
1195   extern unsigned IOCTL_EVIOCGREP;
1196   extern unsigned IOCTL_EVIOCGSND;
1197   extern unsigned IOCTL_EVIOCGSW;
1198   extern unsigned IOCTL_EVIOCGUNIQ;
1199   extern unsigned IOCTL_EVIOCGVERSION;
1200   extern unsigned IOCTL_EVIOCRMFF;
1201   extern unsigned IOCTL_EVIOCSABS;
1202   extern unsigned IOCTL_EVIOCSFF;
1203   extern unsigned IOCTL_EVIOCSKEYCODE;
1204   extern unsigned IOCTL_EVIOCSREP;
1205   extern unsigned IOCTL_BLKFLSBUF;
1206   extern unsigned IOCTL_BLKGETSIZE;
1207   extern unsigned IOCTL_BLKRAGET;
1208   extern unsigned IOCTL_BLKRASET;
1209   extern unsigned IOCTL_BLKROGET;
1210   extern unsigned IOCTL_BLKROSET;
1211   extern unsigned IOCTL_BLKRRPART;
1212   extern unsigned IOCTL_CDROMAUDIOBUFSIZ;
1213   extern unsigned IOCTL_CDROMEJECT;
1214   extern unsigned IOCTL_CDROMEJECT_SW;
1215   extern unsigned IOCTL_CDROMMULTISESSION;
1216   extern unsigned IOCTL_CDROMPAUSE;
1217   extern unsigned IOCTL_CDROMPLAYMSF;
1218   extern unsigned IOCTL_CDROMPLAYTRKIND;
1219   extern unsigned IOCTL_CDROMREADAUDIO;
1220   extern unsigned IOCTL_CDROMREADCOOKED;
1221   extern unsigned IOCTL_CDROMREADMODE1;
1222   extern unsigned IOCTL_CDROMREADMODE2;
1223   extern unsigned IOCTL_CDROMREADRAW;
1224   extern unsigned IOCTL_CDROMREADTOCENTRY;
1225   extern unsigned IOCTL_CDROMREADTOCHDR;
1226   extern unsigned IOCTL_CDROMRESET;
1227   extern unsigned IOCTL_CDROMRESUME;
1228   extern unsigned IOCTL_CDROMSEEK;
1229   extern unsigned IOCTL_CDROMSTART;
1230   extern unsigned IOCTL_CDROMSTOP;
1231   extern unsigned IOCTL_CDROMSUBCHNL;
1232   extern unsigned IOCTL_CDROMVOLCTRL;
1233   extern unsigned IOCTL_CDROMVOLREAD;
1234   extern unsigned IOCTL_CDROM_GET_UPC;
1235   extern unsigned IOCTL_FDCLRPRM;
1236   extern unsigned IOCTL_FDDEFPRM;
1237   extern unsigned IOCTL_FDFLUSH;
1238   extern unsigned IOCTL_FDFMTBEG;
1239   extern unsigned IOCTL_FDFMTEND;
1240   extern unsigned IOCTL_FDFMTTRK;
1241   extern unsigned IOCTL_FDGETDRVPRM;
1242   extern unsigned IOCTL_FDGETDRVSTAT;
1243   extern unsigned IOCTL_FDGETDRVTYP;
1244   extern unsigned IOCTL_FDGETFDCSTAT;
1245   extern unsigned IOCTL_FDGETMAXERRS;
1246   extern unsigned IOCTL_FDGETPRM;
1247   extern unsigned IOCTL_FDMSGOFF;
1248   extern unsigned IOCTL_FDMSGON;
1249   extern unsigned IOCTL_FDPOLLDRVSTAT;
1250   extern unsigned IOCTL_FDRAWCMD;
1251   extern unsigned IOCTL_FDRESET;
1252   extern unsigned IOCTL_FDSETDRVPRM;
1253   extern unsigned IOCTL_FDSETEMSGTRESH;
1254   extern unsigned IOCTL_FDSETMAXERRS;
1255   extern unsigned IOCTL_FDSETPRM;
1256   extern unsigned IOCTL_FDTWADDLE;
1257   extern unsigned IOCTL_FDWERRORCLR;
1258   extern unsigned IOCTL_FDWERRORGET;
1259   extern unsigned IOCTL_HDIO_DRIVE_CMD;
1260   extern unsigned IOCTL_HDIO_GETGEO;
1261   extern unsigned IOCTL_HDIO_GET_32BIT;
1262   extern unsigned IOCTL_HDIO_GET_DMA;
1263   extern unsigned IOCTL_HDIO_GET_IDENTITY;
1264   extern unsigned IOCTL_HDIO_GET_KEEPSETTINGS;
1265   extern unsigned IOCTL_HDIO_GET_MULTCOUNT;
1266   extern unsigned IOCTL_HDIO_GET_NOWERR;
1267   extern unsigned IOCTL_HDIO_GET_UNMASKINTR;
1268   extern unsigned IOCTL_HDIO_SET_32BIT;
1269   extern unsigned IOCTL_HDIO_SET_DMA;
1270   extern unsigned IOCTL_HDIO_SET_KEEPSETTINGS;
1271   extern unsigned IOCTL_HDIO_SET_MULTCOUNT;
1272   extern unsigned IOCTL_HDIO_SET_NOWERR;
1273   extern unsigned IOCTL_HDIO_SET_UNMASKINTR;
1274   extern unsigned IOCTL_MTIOCPOS;
1275   extern unsigned IOCTL_PPPIOCGASYNCMAP;
1276   extern unsigned IOCTL_PPPIOCGDEBUG;
1277   extern unsigned IOCTL_PPPIOCGFLAGS;
1278   extern unsigned IOCTL_PPPIOCGUNIT;
1279   extern unsigned IOCTL_PPPIOCGXASYNCMAP;
1280   extern unsigned IOCTL_PPPIOCSASYNCMAP;
1281   extern unsigned IOCTL_PPPIOCSDEBUG;
1282   extern unsigned IOCTL_PPPIOCSFLAGS;
1283   extern unsigned IOCTL_PPPIOCSMAXCID;
1284   extern unsigned IOCTL_PPPIOCSMRU;
1285   extern unsigned IOCTL_PPPIOCSXASYNCMAP;
1286   extern unsigned IOCTL_SIOCDARP;
1287   extern unsigned IOCTL_SIOCDRARP;
1288   extern unsigned IOCTL_SIOCGARP;
1289   extern unsigned IOCTL_SIOCGIFENCAP;
1290   extern unsigned IOCTL_SIOCGIFHWADDR;
1291   extern unsigned IOCTL_SIOCGIFMAP;
1292   extern unsigned IOCTL_SIOCGIFMEM;
1293   extern unsigned IOCTL_SIOCGIFNAME;
1294   extern unsigned IOCTL_SIOCGIFSLAVE;
1295   extern unsigned IOCTL_SIOCGRARP;
1296   extern unsigned IOCTL_SIOCGSTAMP;
1297   extern unsigned IOCTL_SIOCSARP;
1298   extern unsigned IOCTL_SIOCSIFENCAP;
1299   extern unsigned IOCTL_SIOCSIFHWADDR;
1300   extern unsigned IOCTL_SIOCSIFLINK;
1301   extern unsigned IOCTL_SIOCSIFMAP;
1302   extern unsigned IOCTL_SIOCSIFMEM;
1303   extern unsigned IOCTL_SIOCSIFSLAVE;
1304   extern unsigned IOCTL_SIOCSRARP;
1305   extern unsigned IOCTL_SNDCTL_COPR_HALT;
1306   extern unsigned IOCTL_SNDCTL_COPR_LOAD;
1307   extern unsigned IOCTL_SNDCTL_COPR_RCODE;
1308   extern unsigned IOCTL_SNDCTL_COPR_RCVMSG;
1309   extern unsigned IOCTL_SNDCTL_COPR_RDATA;
1310   extern unsigned IOCTL_SNDCTL_COPR_RESET;
1311   extern unsigned IOCTL_SNDCTL_COPR_RUN;
1312   extern unsigned IOCTL_SNDCTL_COPR_SENDMSG;
1313   extern unsigned IOCTL_SNDCTL_COPR_WCODE;
1314   extern unsigned IOCTL_SNDCTL_COPR_WDATA;
1315   extern unsigned IOCTL_TCFLSH;
1316   extern unsigned IOCTL_TCGETA;
1317   extern unsigned IOCTL_TCGETS;
1318   extern unsigned IOCTL_TCSBRK;
1319   extern unsigned IOCTL_TCSBRKP;
1320   extern unsigned IOCTL_TCSETA;
1321   extern unsigned IOCTL_TCSETAF;
1322   extern unsigned IOCTL_TCSETAW;
1323   extern unsigned IOCTL_TCSETS;
1324   extern unsigned IOCTL_TCSETSF;
1325   extern unsigned IOCTL_TCSETSW;
1326   extern unsigned IOCTL_TCXONC;
1327   extern unsigned IOCTL_TIOCGLCKTRMIOS;
1328   extern unsigned IOCTL_TIOCGSOFTCAR;
1329   extern unsigned IOCTL_TIOCINQ;
1330   extern unsigned IOCTL_TIOCLINUX;
1331   extern unsigned IOCTL_TIOCSERCONFIG;
1332   extern unsigned IOCTL_TIOCSERGETLSR;
1333   extern unsigned IOCTL_TIOCSERGWILD;
1334   extern unsigned IOCTL_TIOCSERSWILD;
1335   extern unsigned IOCTL_TIOCSLCKTRMIOS;
1336   extern unsigned IOCTL_TIOCSSOFTCAR;
1337   extern unsigned IOCTL_VT_DISALLOCATE;
1338   extern unsigned IOCTL_VT_GETSTATE;
1339   extern unsigned IOCTL_VT_RESIZE;
1340   extern unsigned IOCTL_VT_RESIZEX;
1341   extern unsigned IOCTL_VT_SENDSIG;
1342 #endif  // SANITIZER_LINUX
1343 #if SANITIZER_LINUX || SANITIZER_FREEBS || SANITIZER_NETBSDD
1344   extern unsigned IOCTL_MTIOCGET;
1345   extern unsigned IOCTL_MTIOCTOP;
1346   extern unsigned IOCTL_SIOCADDRT;
1347   extern unsigned IOCTL_SIOCDELRT;
1348   extern unsigned IOCTL_SNDCTL_DSP_GETBLKSIZE;
1349   extern unsigned IOCTL_SNDCTL_DSP_GETFMTS;
1350   extern unsigned IOCTL_SNDCTL_DSP_NONBLOCK;
1351   extern unsigned IOCTL_SNDCTL_DSP_POST;
1352   extern unsigned IOCTL_SNDCTL_DSP_RESET;
1353   extern unsigned IOCTL_SNDCTL_DSP_SETFMT;
1354   extern unsigned IOCTL_SNDCTL_DSP_SETFRAGMENT;
1355   extern unsigned IOCTL_SNDCTL_DSP_SPEED;
1356   extern unsigned IOCTL_SNDCTL_DSP_STEREO;
1357   extern unsigned IOCTL_SNDCTL_DSP_SUBDIVIDE;
1358   extern unsigned IOCTL_SNDCTL_DSP_SYNC;
1359   extern unsigned IOCTL_SNDCTL_FM_4OP_ENABLE;
1360   extern unsigned IOCTL_SNDCTL_FM_LOAD_INSTR;
1361   extern unsigned IOCTL_SNDCTL_MIDI_INFO;
1362   extern unsigned IOCTL_SNDCTL_MIDI_PRETIME;
1363   extern unsigned IOCTL_SNDCTL_SEQ_CTRLRATE;
1364   extern unsigned IOCTL_SNDCTL_SEQ_GETINCOUNT;
1365   extern unsigned IOCTL_SNDCTL_SEQ_GETOUTCOUNT;
1366   extern unsigned IOCTL_SNDCTL_SEQ_NRMIDIS;
1367   extern unsigned IOCTL_SNDCTL_SEQ_NRSYNTHS;
1368   extern unsigned IOCTL_SNDCTL_SEQ_OUTOFBAND;
1369   extern unsigned IOCTL_SNDCTL_SEQ_PANIC;
1370   extern unsigned IOCTL_SNDCTL_SEQ_PERCMODE;
1371   extern unsigned IOCTL_SNDCTL_SEQ_RESET;
1372   extern unsigned IOCTL_SNDCTL_SEQ_RESETSAMPLES;
1373   extern unsigned IOCTL_SNDCTL_SEQ_SYNC;
1374   extern unsigned IOCTL_SNDCTL_SEQ_TESTMIDI;
1375   extern unsigned IOCTL_SNDCTL_SEQ_THRESHOLD;
1376   extern unsigned IOCTL_SNDCTL_SYNTH_INFO;
1377   extern unsigned IOCTL_SNDCTL_SYNTH_MEMAVL;
1378   extern unsigned IOCTL_SNDCTL_TMR_CONTINUE;
1379   extern unsigned IOCTL_SNDCTL_TMR_METRONOME;
1380   extern unsigned IOCTL_SNDCTL_TMR_SELECT;
1381   extern unsigned IOCTL_SNDCTL_TMR_SOURCE;
1382   extern unsigned IOCTL_SNDCTL_TMR_START;
1383   extern unsigned IOCTL_SNDCTL_TMR_STOP;
1384   extern unsigned IOCTL_SNDCTL_TMR_TEMPO;
1385   extern unsigned IOCTL_SNDCTL_TMR_TIMEBASE;
1386   extern unsigned IOCTL_SOUND_MIXER_READ_ALTPCM;
1387   extern unsigned IOCTL_SOUND_MIXER_READ_BASS;
1388   extern unsigned IOCTL_SOUND_MIXER_READ_CAPS;
1389   extern unsigned IOCTL_SOUND_MIXER_READ_CD;
1390   extern unsigned IOCTL_SOUND_MIXER_READ_DEVMASK;
1391   extern unsigned IOCTL_SOUND_MIXER_READ_ENHANCE;
1392   extern unsigned IOCTL_SOUND_MIXER_READ_IGAIN;
1393   extern unsigned IOCTL_SOUND_MIXER_READ_IMIX;
1394   extern unsigned IOCTL_SOUND_MIXER_READ_LINE1;
1395   extern unsigned IOCTL_SOUND_MIXER_READ_LINE2;
1396   extern unsigned IOCTL_SOUND_MIXER_READ_LINE3;
1397   extern unsigned IOCTL_SOUND_MIXER_READ_LINE;
1398   extern unsigned IOCTL_SOUND_MIXER_READ_LOUD;
1399   extern unsigned IOCTL_SOUND_MIXER_READ_MIC;
1400   extern unsigned IOCTL_SOUND_MIXER_READ_MUTE;
1401   extern unsigned IOCTL_SOUND_MIXER_READ_OGAIN;
1402   extern unsigned IOCTL_SOUND_MIXER_READ_PCM;
1403   extern unsigned IOCTL_SOUND_MIXER_READ_RECLEV;
1404   extern unsigned IOCTL_SOUND_MIXER_READ_RECMASK;
1405   extern unsigned IOCTL_SOUND_MIXER_READ_RECSRC;
1406   extern unsigned IOCTL_SOUND_MIXER_READ_SPEAKER;
1407   extern unsigned IOCTL_SOUND_MIXER_READ_STEREODEVS;
1408   extern unsigned IOCTL_SOUND_MIXER_READ_SYNTH;
1409   extern unsigned IOCTL_SOUND_MIXER_READ_TREBLE;
1410   extern unsigned IOCTL_SOUND_MIXER_READ_VOLUME;
1411   extern unsigned IOCTL_SOUND_MIXER_WRITE_ALTPCM;
1412   extern unsigned IOCTL_SOUND_MIXER_WRITE_BASS;
1413   extern unsigned IOCTL_SOUND_MIXER_WRITE_CD;
1414   extern unsigned IOCTL_SOUND_MIXER_WRITE_ENHANCE;
1415   extern unsigned IOCTL_SOUND_MIXER_WRITE_IGAIN;
1416   extern unsigned IOCTL_SOUND_MIXER_WRITE_IMIX;
1417   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE1;
1418   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE2;
1419   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE3;
1420   extern unsigned IOCTL_SOUND_MIXER_WRITE_LINE;
1421   extern unsigned IOCTL_SOUND_MIXER_WRITE_LOUD;
1422   extern unsigned IOCTL_SOUND_MIXER_WRITE_MIC;
1423   extern unsigned IOCTL_SOUND_MIXER_WRITE_MUTE;
1424   extern unsigned IOCTL_SOUND_MIXER_WRITE_OGAIN;
1425   extern unsigned IOCTL_SOUND_MIXER_WRITE_PCM;
1426   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECLEV;
1427   extern unsigned IOCTL_SOUND_MIXER_WRITE_RECSRC;
1428   extern unsigned IOCTL_SOUND_MIXER_WRITE_SPEAKER;
1429   extern unsigned IOCTL_SOUND_MIXER_WRITE_SYNTH;
1430   extern unsigned IOCTL_SOUND_MIXER_WRITE_TREBLE;
1431   extern unsigned IOCTL_SOUND_MIXER_WRITE_VOLUME;
1432   extern unsigned IOCTL_SOUND_PCM_READ_BITS;
1433   extern unsigned IOCTL_SOUND_PCM_READ_CHANNELS;
1434   extern unsigned IOCTL_SOUND_PCM_READ_FILTER;
1435   extern unsigned IOCTL_SOUND_PCM_READ_RATE;
1436   extern unsigned IOCTL_SOUND_PCM_WRITE_CHANNELS;
1437   extern unsigned IOCTL_SOUND_PCM_WRITE_FILTER;
1438   extern unsigned IOCTL_VT_ACTIVATE;
1439   extern unsigned IOCTL_VT_GETMODE;
1440   extern unsigned IOCTL_VT_OPENQRY;
1441   extern unsigned IOCTL_VT_RELDISP;
1442   extern unsigned IOCTL_VT_SETMODE;
1443   extern unsigned IOCTL_VT_WAITACTIVE;
1444 #endif  // SANITIZER_LINUX || SANITIZER_FREEBS || SANITIZER_NETBSDD
1445 
1446 #if SANITIZER_LINUX && !SANITIZER_ANDROID
1447   extern unsigned IOCTL_CYGETDEFTHRESH;
1448   extern unsigned IOCTL_CYGETDEFTIMEOUT;
1449   extern unsigned IOCTL_CYGETMON;
1450   extern unsigned IOCTL_CYGETTHRESH;
1451   extern unsigned IOCTL_CYGETTIMEOUT;
1452   extern unsigned IOCTL_CYSETDEFTHRESH;
1453   extern unsigned IOCTL_CYSETDEFTIMEOUT;
1454   extern unsigned IOCTL_CYSETTHRESH;
1455   extern unsigned IOCTL_CYSETTIMEOUT;
1456   extern unsigned IOCTL_EQL_EMANCIPATE;
1457   extern unsigned IOCTL_EQL_ENSLAVE;
1458   extern unsigned IOCTL_EQL_GETMASTRCFG;
1459   extern unsigned IOCTL_EQL_GETSLAVECFG;
1460   extern unsigned IOCTL_EQL_SETMASTRCFG;
1461   extern unsigned IOCTL_EQL_SETSLAVECFG;
1462   extern unsigned IOCTL_EVIOCGKEYCODE_V2;
1463   extern unsigned IOCTL_EVIOCGPROP;
1464   extern unsigned IOCTL_EVIOCSKEYCODE_V2;
1465   extern unsigned IOCTL_FS_IOC_GETFLAGS;
1466   extern unsigned IOCTL_FS_IOC_GETVERSION;
1467   extern unsigned IOCTL_FS_IOC_SETFLAGS;
1468   extern unsigned IOCTL_FS_IOC_SETVERSION;
1469   extern unsigned IOCTL_GIO_CMAP;
1470   extern unsigned IOCTL_GIO_FONT;
1471   extern unsigned IOCTL_GIO_UNIMAP;
1472   extern unsigned IOCTL_GIO_UNISCRNMAP;
1473   extern unsigned IOCTL_KDADDIO;
1474   extern unsigned IOCTL_KDDELIO;
1475   extern unsigned IOCTL_KDGETKEYCODE;
1476   extern unsigned IOCTL_KDGKBDIACR;
1477   extern unsigned IOCTL_KDGKBENT;
1478   extern unsigned IOCTL_KDGKBLED;
1479   extern unsigned IOCTL_KDGKBMETA;
1480   extern unsigned IOCTL_KDGKBSENT;
1481   extern unsigned IOCTL_KDMAPDISP;
1482   extern unsigned IOCTL_KDSETKEYCODE;
1483   extern unsigned IOCTL_KDSIGACCEPT;
1484   extern unsigned IOCTL_KDSKBDIACR;
1485   extern unsigned IOCTL_KDSKBENT;
1486   extern unsigned IOCTL_KDSKBLED;
1487   extern unsigned IOCTL_KDSKBMETA;
1488   extern unsigned IOCTL_KDSKBSENT;
1489   extern unsigned IOCTL_KDUNMAPDISP;
1490   extern unsigned IOCTL_LPABORT;
1491   extern unsigned IOCTL_LPABORTOPEN;
1492   extern unsigned IOCTL_LPCAREFUL;
1493   extern unsigned IOCTL_LPCHAR;
1494   extern unsigned IOCTL_LPGETIRQ;
1495   extern unsigned IOCTL_LPGETSTATUS;
1496   extern unsigned IOCTL_LPRESET;
1497   extern unsigned IOCTL_LPSETIRQ;
1498   extern unsigned IOCTL_LPTIME;
1499   extern unsigned IOCTL_LPWAIT;
1500   extern unsigned IOCTL_MTIOCGETCONFIG;
1501   extern unsigned IOCTL_MTIOCSETCONFIG;
1502   extern unsigned IOCTL_PIO_CMAP;
1503   extern unsigned IOCTL_PIO_FONT;
1504   extern unsigned IOCTL_PIO_UNIMAP;
1505   extern unsigned IOCTL_PIO_UNIMAPCLR;
1506   extern unsigned IOCTL_PIO_UNISCRNMAP;
1507   extern unsigned IOCTL_SCSI_IOCTL_GET_IDLUN;
1508   extern unsigned IOCTL_SCSI_IOCTL_PROBE_HOST;
1509   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_DISABLE;
1510   extern unsigned IOCTL_SCSI_IOCTL_TAGGED_ENABLE;
1511   extern unsigned IOCTL_SIOCAIPXITFCRT;
1512   extern unsigned IOCTL_SIOCAIPXPRISLT;
1513   extern unsigned IOCTL_SIOCAX25ADDUID;
1514   extern unsigned IOCTL_SIOCAX25DELUID;
1515   extern unsigned IOCTL_SIOCAX25GETPARMS;
1516   extern unsigned IOCTL_SIOCAX25GETUID;
1517   extern unsigned IOCTL_SIOCAX25NOUID;
1518   extern unsigned IOCTL_SIOCAX25SETPARMS;
1519   extern unsigned IOCTL_SIOCDEVPLIP;
1520   extern unsigned IOCTL_SIOCIPXCFGDATA;
1521   extern unsigned IOCTL_SIOCNRDECOBS;
1522   extern unsigned IOCTL_SIOCNRGETPARMS;
1523   extern unsigned IOCTL_SIOCNRRTCTL;
1524   extern unsigned IOCTL_SIOCNRSETPARMS;
1525   extern unsigned IOCTL_SNDCTL_DSP_GETISPACE;
1526   extern unsigned IOCTL_SNDCTL_DSP_GETOSPACE;
1527   extern unsigned IOCTL_TIOCGSERIAL;
1528   extern unsigned IOCTL_TIOCSERGETMULTI;
1529   extern unsigned IOCTL_TIOCSERSETMULTI;
1530   extern unsigned IOCTL_TIOCSSERIAL;
1531 #endif  // SANITIZER_LINUX && !SANITIZER_ANDROID
1532 
1533 #if (SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD) && !SANITIZER_ANDROID
1534   extern unsigned IOCTL_GIO_SCRNMAP;
1535   extern unsigned IOCTL_KDDISABIO;
1536   extern unsigned IOCTL_KDENABIO;
1537   extern unsigned IOCTL_KDGETLED;
1538   extern unsigned IOCTL_KDGETMODE;
1539   extern unsigned IOCTL_KDGKBMODE;
1540   extern unsigned IOCTL_KDGKBTYPE;
1541   extern unsigned IOCTL_KDMKTONE;
1542   extern unsigned IOCTL_KDSETLED;
1543   extern unsigned IOCTL_KDSETMODE;
1544   extern unsigned IOCTL_KDSKBMODE;
1545   extern unsigned IOCTL_KIOCSOUND;
1546   extern unsigned IOCTL_PIO_SCRNMAP;
1547 #endif
1548 
1549   extern const int si_SEGV_MAPERR;
1550   extern const int si_SEGV_ACCERR;
1551 }  // namespace __sanitizer
1552 
1553 #define CHECK_TYPE_SIZE(TYPE) \
1554   COMPILER_CHECK(sizeof(__sanitizer_##TYPE) == sizeof(TYPE))
1555 
1556 #define CHECK_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1557   COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \
1558                  sizeof(((CLASS *) NULL)->MEMBER));                \
1559   COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) ==          \
1560                  offsetof(CLASS, MEMBER))
1561 
1562 // For sigaction, which is a function and struct at the same time,
1563 // and thus requires explicit "struct" in sizeof() expression.
1564 #define CHECK_STRUCT_SIZE_AND_OFFSET(CLASS, MEMBER)                       \
1565   COMPILER_CHECK(sizeof(((struct __sanitizer_##CLASS *) NULL)->MEMBER) == \
1566                  sizeof(((struct CLASS *) NULL)->MEMBER));                \
1567   COMPILER_CHECK(offsetof(struct __sanitizer_##CLASS, MEMBER) ==          \
1568                  offsetof(struct CLASS, MEMBER))
1569 
1570 #define SIGACTION_SYMNAME sigaction
1571 
1572 #endif  // SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC
1573 
1574 #endif
1575