siginfo.h 9.8 KB

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  1. /* siginfo_t, sigevent and constants. Linux version.
  2. Copyright (C) 1997-2016 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #if !defined _SIGNAL_H && !defined __need_siginfo_t \
  16. && !defined __need_sigevent_t
  17. # error "Never include this file directly. Use <signal.h> instead"
  18. #endif
  19. #include <bits/wordsize.h>
  20. #if (!defined __have_sigval_t \
  21. && (defined _SIGNAL_H || defined __need_siginfo_t \
  22. || defined __need_sigevent_t))
  23. # define __have_sigval_t 1
  24. /* Type for data associated with a signal. */
  25. typedef union sigval
  26. {
  27. int sival_int;
  28. void *sival_ptr;
  29. } sigval_t;
  30. #endif
  31. #if (!defined __have_siginfo_t \
  32. && (defined _SIGNAL_H || defined __need_siginfo_t))
  33. # define __have_siginfo_t 1
  34. # define __SI_MAX_SIZE 128
  35. # if __WORDSIZE == 64
  36. # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
  37. # else
  38. # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
  39. # endif
  40. typedef struct
  41. {
  42. int si_signo; /* Signal number. */
  43. int si_errno; /* If non-zero, an errno value associated with
  44. this signal, as defined in <errno.h>. */
  45. int si_code; /* Signal code. */
  46. union
  47. {
  48. int _pad[__SI_PAD_SIZE];
  49. /* kill(). */
  50. struct
  51. {
  52. __pid_t si_pid; /* Sending process ID. */
  53. __uid_t si_uid; /* Real user ID of sending process. */
  54. } _kill;
  55. /* POSIX.1b timers. */
  56. struct
  57. {
  58. int si_tid; /* Timer ID. */
  59. int si_overrun; /* Overrun count. */
  60. sigval_t si_sigval; /* Signal value. */
  61. } _timer;
  62. /* POSIX.1b signals. */
  63. struct
  64. {
  65. __pid_t si_pid; /* Sending process ID. */
  66. __uid_t si_uid; /* Real user ID of sending process. */
  67. sigval_t si_sigval; /* Signal value. */
  68. } _rt;
  69. /* SIGCHLD. */
  70. struct
  71. {
  72. __pid_t si_pid; /* Which child. */
  73. __uid_t si_uid; /* Real user ID of sending process. */
  74. int si_status; /* Exit value or signal. */
  75. __clock_t si_utime;
  76. __clock_t si_stime;
  77. } _sigchld;
  78. /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
  79. struct
  80. {
  81. void *si_addr; /* Faulting insn/memory ref. */
  82. short int si_addr_lsb; /* Valid LSB of the reported address. */
  83. } _sigfault;
  84. /* SIGPOLL. */
  85. struct
  86. {
  87. long int si_band; /* Band event for SIGPOLL. */
  88. int si_fd;
  89. } _sigpoll;
  90. /* SIGSYS. */
  91. struct
  92. {
  93. void *_call_addr; /* Calling user insn. */
  94. int _syscall; /* Triggering system call number. */
  95. unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
  96. } _sigsys;
  97. } _sifields;
  98. } siginfo_t;
  99. /* X/Open requires some more fields with fixed names. */
  100. # define si_pid _sifields._kill.si_pid
  101. # define si_uid _sifields._kill.si_uid
  102. # define si_timerid _sifields._timer.si_tid
  103. # define si_overrun _sifields._timer.si_overrun
  104. # define si_status _sifields._sigchld.si_status
  105. # define si_utime _sifields._sigchld.si_utime
  106. # define si_stime _sifields._sigchld.si_stime
  107. # define si_value _sifields._rt.si_sigval
  108. # define si_int _sifields._rt.si_sigval.sival_int
  109. # define si_ptr _sifields._rt.si_sigval.sival_ptr
  110. # define si_addr _sifields._sigfault.si_addr
  111. # define si_addr_lsb _sifields._sigfault.si_addr_lsb
  112. # define si_band _sifields._sigpoll.si_band
  113. # define si_fd _sifields._sigpoll.si_fd
  114. # define si_call_addr _sifields._sigsys._call_addr
  115. # define si_syscall _sifields._sigsys._syscall
  116. # define si_arch _sifields._sigsys._arch
  117. /* Values for `si_code'. Positive values are reserved for kernel-generated
  118. signals. */
  119. enum
  120. {
  121. SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */
  122. # define SI_ASYNCNL SI_ASYNCNL
  123. SI_TKILL = -6, /* Sent by tkill. */
  124. # define SI_TKILL SI_TKILL
  125. SI_SIGIO, /* Sent by queued SIGIO. */
  126. # define SI_SIGIO SI_SIGIO
  127. SI_ASYNCIO, /* Sent by AIO completion. */
  128. # define SI_ASYNCIO SI_ASYNCIO
  129. SI_MESGQ, /* Sent by real time mesq state change. */
  130. # define SI_MESGQ SI_MESGQ
  131. SI_TIMER, /* Sent by timer expiration. */
  132. # define SI_TIMER SI_TIMER
  133. SI_QUEUE, /* Sent by sigqueue. */
  134. # define SI_QUEUE SI_QUEUE
  135. SI_USER, /* Sent by kill, sigsend. */
  136. # define SI_USER SI_USER
  137. SI_KERNEL = 0x80 /* Send by kernel. */
  138. #define SI_KERNEL SI_KERNEL
  139. };
  140. # if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
  141. /* `si_code' values for SIGILL signal. */
  142. enum
  143. {
  144. ILL_ILLOPC = 1, /* Illegal opcode. */
  145. # define ILL_ILLOPC ILL_ILLOPC
  146. ILL_ILLOPN, /* Illegal operand. */
  147. # define ILL_ILLOPN ILL_ILLOPN
  148. ILL_ILLADR, /* Illegal addressing mode. */
  149. # define ILL_ILLADR ILL_ILLADR
  150. ILL_ILLTRP, /* Illegal trap. */
  151. # define ILL_ILLTRP ILL_ILLTRP
  152. ILL_PRVOPC, /* Privileged opcode. */
  153. # define ILL_PRVOPC ILL_PRVOPC
  154. ILL_PRVREG, /* Privileged register. */
  155. # define ILL_PRVREG ILL_PRVREG
  156. ILL_COPROC, /* Coprocessor error. */
  157. # define ILL_COPROC ILL_COPROC
  158. ILL_BADSTK /* Internal stack error. */
  159. # define ILL_BADSTK ILL_BADSTK
  160. };
  161. /* `si_code' values for SIGFPE signal. */
  162. enum
  163. {
  164. FPE_INTDIV = 1, /* Integer divide by zero. */
  165. # define FPE_INTDIV FPE_INTDIV
  166. FPE_INTOVF, /* Integer overflow. */
  167. # define FPE_INTOVF FPE_INTOVF
  168. FPE_FLTDIV, /* Floating point divide by zero. */
  169. # define FPE_FLTDIV FPE_FLTDIV
  170. FPE_FLTOVF, /* Floating point overflow. */
  171. # define FPE_FLTOVF FPE_FLTOVF
  172. FPE_FLTUND, /* Floating point underflow. */
  173. # define FPE_FLTUND FPE_FLTUND
  174. FPE_FLTRES, /* Floating point inexact result. */
  175. # define FPE_FLTRES FPE_FLTRES
  176. FPE_FLTINV, /* Floating point invalid operation. */
  177. # define FPE_FLTINV FPE_FLTINV
  178. FPE_FLTSUB /* Subscript out of range. */
  179. # define FPE_FLTSUB FPE_FLTSUB
  180. };
  181. /* `si_code' values for SIGSEGV signal. */
  182. enum
  183. {
  184. SEGV_MAPERR = 1, /* Address not mapped to object. */
  185. # define SEGV_MAPERR SEGV_MAPERR
  186. SEGV_ACCERR /* Invalid permissions for mapped object. */
  187. # define SEGV_ACCERR SEGV_ACCERR
  188. };
  189. /* `si_code' values for SIGBUS signal. */
  190. enum
  191. {
  192. BUS_ADRALN = 1, /* Invalid address alignment. */
  193. # define BUS_ADRALN BUS_ADRALN
  194. BUS_ADRERR, /* Non-existant physical address. */
  195. # define BUS_ADRERR BUS_ADRERR
  196. BUS_OBJERR, /* Object specific hardware error. */
  197. # define BUS_OBJERR BUS_OBJERR
  198. BUS_MCEERR_AR, /* Hardware memory error: action required. */
  199. # define BUS_MCEERR_AR BUS_MCEERR_AR
  200. BUS_MCEERR_AO /* Hardware memory error: action optional. */
  201. # define BUS_MCEERR_AO BUS_MCEERR_AO
  202. };
  203. # endif
  204. # ifdef __USE_XOPEN_EXTENDED
  205. /* `si_code' values for SIGTRAP signal. */
  206. enum
  207. {
  208. TRAP_BRKPT = 1, /* Process breakpoint. */
  209. # define TRAP_BRKPT TRAP_BRKPT
  210. TRAP_TRACE /* Process trace trap. */
  211. # define TRAP_TRACE TRAP_TRACE
  212. };
  213. # endif
  214. # if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
  215. /* `si_code' values for SIGCHLD signal. */
  216. enum
  217. {
  218. CLD_EXITED = 1, /* Child has exited. */
  219. # define CLD_EXITED CLD_EXITED
  220. CLD_KILLED, /* Child was killed. */
  221. # define CLD_KILLED CLD_KILLED
  222. CLD_DUMPED, /* Child terminated abnormally. */
  223. # define CLD_DUMPED CLD_DUMPED
  224. CLD_TRAPPED, /* Traced child has trapped. */
  225. # define CLD_TRAPPED CLD_TRAPPED
  226. CLD_STOPPED, /* Child has stopped. */
  227. # define CLD_STOPPED CLD_STOPPED
  228. CLD_CONTINUED /* Stopped child has continued. */
  229. # define CLD_CONTINUED CLD_CONTINUED
  230. };
  231. /* `si_code' values for SIGPOLL signal. */
  232. enum
  233. {
  234. POLL_IN = 1, /* Data input available. */
  235. # define POLL_IN POLL_IN
  236. POLL_OUT, /* Output buffers available. */
  237. # define POLL_OUT POLL_OUT
  238. POLL_MSG, /* Input message available. */
  239. # define POLL_MSG POLL_MSG
  240. POLL_ERR, /* I/O error. */
  241. # define POLL_ERR POLL_ERR
  242. POLL_PRI, /* High priority input available. */
  243. # define POLL_PRI POLL_PRI
  244. POLL_HUP /* Device disconnected. */
  245. # define POLL_HUP POLL_HUP
  246. };
  247. # endif
  248. # undef __need_siginfo_t
  249. #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
  250. #if (defined _SIGNAL_H || defined __need_sigevent_t) \
  251. && !defined __have_sigevent_t
  252. # define __have_sigevent_t 1
  253. /* Structure to transport application-defined values with signals. */
  254. # define __SIGEV_MAX_SIZE 64
  255. # if __WORDSIZE == 64
  256. # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
  257. # else
  258. # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
  259. # endif
  260. /* Forward declaration. */
  261. # ifndef __have_pthread_attr_t
  262. typedef union pthread_attr_t pthread_attr_t;
  263. # define __have_pthread_attr_t 1
  264. # endif
  265. typedef struct sigevent
  266. {
  267. sigval_t sigev_value;
  268. int sigev_signo;
  269. int sigev_notify;
  270. union
  271. {
  272. int _pad[__SIGEV_PAD_SIZE];
  273. /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
  274. thread to receive the signal. */
  275. __pid_t _tid;
  276. struct
  277. {
  278. void (*_function) (sigval_t); /* Function to start. */
  279. pthread_attr_t *_attribute; /* Thread attributes. */
  280. } _sigev_thread;
  281. } _sigev_un;
  282. } sigevent_t;
  283. /* POSIX names to access some of the members. */
  284. # define sigev_notify_function _sigev_un._sigev_thread._function
  285. # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
  286. /* `sigev_notify' values. */
  287. enum
  288. {
  289. SIGEV_SIGNAL = 0, /* Notify via signal. */
  290. # define SIGEV_SIGNAL SIGEV_SIGNAL
  291. SIGEV_NONE, /* Other notification: meaningless. */
  292. # define SIGEV_NONE SIGEV_NONE
  293. SIGEV_THREAD, /* Deliver via thread creation. */
  294. # define SIGEV_THREAD SIGEV_THREAD
  295. SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */
  296. #define SIGEV_THREAD_ID SIGEV_THREAD_ID
  297. };
  298. #endif /* have _SIGNAL_H. */