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