siginfo.h 8.8 KB

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  1. /* siginfo_t, sigevent and constants. Linux/MIPS version.
  2. Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005
  3. Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. version 2.1 of the License, or (at your option) any later version.
  9. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, see
  15. <http://www.gnu.org/licenses/>. */
  16. #if !defined _SIGNAL_H && !defined __need_siginfo_t \
  17. && !defined __need_sigevent_t
  18. # error "Never include this file directly. Use <signal.h> instead"
  19. #endif
  20. #include <bits/wordsize.h>
  21. #if (!defined __have_sigval_t \
  22. && (defined _SIGNAL_H || defined __need_siginfo_t \
  23. || defined __need_sigevent_t))
  24. # define __have_sigval_t 1
  25. /* Type for data associated with a signal. */
  26. typedef union sigval
  27. {
  28. int sival_int;
  29. void *sival_ptr;
  30. } sigval_t;
  31. #endif
  32. #if (!defined __have_siginfo_t \
  33. && (defined _SIGNAL_H || defined __need_siginfo_t))
  34. # define __have_siginfo_t 1
  35. # define __SI_MAX_SIZE 128
  36. # if __WORDSIZE == 64
  37. # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
  38. # else
  39. # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
  40. # endif
  41. typedef struct siginfo
  42. {
  43. int si_signo; /* Signal number. */
  44. int si_code; /* Signal code. */
  45. int si_errno; /* If non-zero, an errno value associated with
  46. this signal, as defined in <errno.h>. */
  47. int __pad0[__SI_MAX_SIZE / sizeof (int) - __SI_PAD_SIZE - 3];
  48. /* Explicit padding. */
  49. union
  50. {
  51. int _pad[__SI_PAD_SIZE];
  52. /* kill(). */
  53. struct
  54. {
  55. __pid_t si_pid; /* Sending process ID. */
  56. __uid_t si_uid; /* Real user ID of sending process. */
  57. } _kill;
  58. /* SIGCHLD. */
  59. struct
  60. {
  61. __pid_t si_pid; /* Which child. */
  62. __uid_t si_uid; /* Real user ID of sending process. */
  63. int si_status; /* Exit value or signal. */
  64. __clock_t si_utime;
  65. __clock_t si_stime;
  66. } _sigchld;
  67. /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
  68. struct
  69. {
  70. void *si_addr; /* Faulting insn/memory ref. */
  71. } _sigfault;
  72. /* SIGPOLL. */
  73. struct
  74. {
  75. int si_band; /* Band event for SIGPOLL. */
  76. int si_fd;
  77. } _sigpoll;
  78. /* POSIX.1b timers. */
  79. struct
  80. {
  81. unsigned int _timer1;
  82. unsigned int _timer2;
  83. } _timer;
  84. /* POSIX.1b signals. */
  85. struct
  86. {
  87. __pid_t si_pid; /* Sending process ID. */
  88. __uid_t si_uid; /* Real user ID of sending process. */
  89. sigval_t si_sigval; /* Signal value. */
  90. } _rt;
  91. } _sifields;
  92. } siginfo_t;
  93. /* X/Open requires some more fields with fixed names. */
  94. # define si_pid _sifields._kill.si_pid
  95. # define si_uid _sifields._kill.si_uid
  96. # define si_status _sifields._sigchld.si_status
  97. # define si_utime _sifields._sigchld.si_utime
  98. # define si_stime _sifields._sigchld.si_stime
  99. # define si_value _sifields._rt.si_sigval
  100. # define si_int _sifields._rt.si_sigval.sival_int
  101. # define si_ptr _sifields._rt.si_sigval.sival_ptr
  102. # define si_addr _sifields._sigfault.si_addr
  103. # define si_band _sifields._sigpoll.si_band
  104. # define si_fd _sifields._sigpoll.si_fd
  105. /* Values for `si_code'. Positive values are reserved for kernel-generated
  106. signals. */
  107. enum
  108. {
  109. SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */
  110. # define SI_ASYNCNL SI_ASYNCNL
  111. SI_TKILL = -6, /* Sent by tkill. */
  112. # define SI_TKILL SI_TKILL
  113. SI_SIGIO, /* Sent by queued SIGIO. */
  114. # define SI_SIGIO SI_SIGIO
  115. SI_MESGQ, /* Sent by real time mesq state change. */
  116. # define SI_MESGQ SI_MESGQ
  117. SI_TIMER, /* Sent by real time mesq state change. */
  118. # define SI_TIMER SI_TIMER
  119. SI_ASYNCIO, /* Sent by AIO completion. */
  120. # define SI_ASYNCIO SI_ASYNCIO
  121. SI_QUEUE, /* Sent by sigqueue. */
  122. # define SI_QUEUE SI_QUEUE
  123. SI_USER, /* Sent by kill, sigsend, raise. */
  124. # define SI_USER SI_USER
  125. SI_KERNEL = 0x80 /* Send by kernel. */
  126. #define SI_KERNEL SI_KERNEL
  127. };
  128. /* `si_code' values for SIGILL signal. */
  129. enum
  130. {
  131. ILL_ILLOPC = 1, /* Illegal opcode. */
  132. # define ILL_ILLOPC ILL_ILLOPC
  133. ILL_ILLOPN, /* Illegal operand. */
  134. # define ILL_ILLOPN ILL_ILLOPN
  135. ILL_ILLADR, /* Illegal addressing mode. */
  136. # define ILL_ILLADR ILL_ILLADR
  137. ILL_ILLTRP, /* Illegal trap. */
  138. # define ILL_ILLTRP ILL_ILLTRP
  139. ILL_PRVOPC, /* Privileged opcode. */
  140. # define ILL_PRVOPC ILL_PRVOPC
  141. ILL_PRVREG, /* Privileged register. */
  142. # define ILL_PRVREG ILL_PRVREG
  143. ILL_COPROC, /* Coprocessor error. */
  144. # define ILL_COPROC ILL_COPROC
  145. ILL_BADSTK /* Internal stack error. */
  146. # define ILL_BADSTK ILL_BADSTK
  147. };
  148. /* `si_code' values for SIGFPE signal. */
  149. enum
  150. {
  151. FPE_INTDIV = 1, /* Integer divide by zero. */
  152. # define FPE_INTDIV FPE_INTDIV
  153. FPE_INTOVF, /* Integer overflow. */
  154. # define FPE_INTOVF FPE_INTOVF
  155. FPE_FLTDIV, /* Floating point divide by zero. */
  156. # define FPE_FLTDIV FPE_FLTDIV
  157. FPE_FLTOVF, /* Floating point overflow. */
  158. # define FPE_FLTOVF FPE_FLTOVF
  159. FPE_FLTUND, /* Floating point underflow. */
  160. # define FPE_FLTUND FPE_FLTUND
  161. FPE_FLTRES, /* Floating point inexact result. */
  162. # define FPE_FLTRES FPE_FLTRES
  163. FPE_FLTINV, /* Floating point invalid operation. */
  164. # define FPE_FLTINV FPE_FLTINV
  165. FPE_FLTSUB /* Subscript out of range. */
  166. # define FPE_FLTSUB FPE_FLTSUB
  167. };
  168. /* `si_code' values for SIGSEGV signal. */
  169. enum
  170. {
  171. SEGV_MAPERR = 1, /* Address not mapped to object. */
  172. # define SEGV_MAPERR SEGV_MAPERR
  173. SEGV_ACCERR /* Invalid permissions for mapped object. */
  174. # define SEGV_ACCERR SEGV_ACCERR
  175. };
  176. /* `si_code' values for SIGBUS signal. */
  177. enum
  178. {
  179. BUS_ADRALN = 1, /* Invalid address alignment. */
  180. # define BUS_ADRALN BUS_ADRALN
  181. BUS_ADRERR, /* Non-existant physical address. */
  182. # define BUS_ADRERR BUS_ADRERR
  183. BUS_OBJERR /* Object specific hardware error. */
  184. # define BUS_OBJERR BUS_OBJERR
  185. };
  186. /* `si_code' values for SIGTRAP signal. */
  187. enum
  188. {
  189. TRAP_BRKPT = 1, /* Process breakpoint. */
  190. # define TRAP_BRKPT TRAP_BRKPT
  191. TRAP_TRACE /* Process trace trap. */
  192. # define TRAP_TRACE TRAP_TRACE
  193. };
  194. /* `si_code' values for SIGCHLD signal. */
  195. enum
  196. {
  197. CLD_EXITED = 1, /* Child has exited. */
  198. # define CLD_EXITED CLD_EXITED
  199. CLD_KILLED, /* Child was killed. */
  200. # define CLD_KILLED CLD_KILLED
  201. CLD_DUMPED, /* Child terminated abnormally. */
  202. # define CLD_DUMPED CLD_DUMPED
  203. CLD_TRAPPED, /* Traced child has trapped. */
  204. # define CLD_TRAPPED CLD_TRAPPED
  205. CLD_STOPPED, /* Child has stopped. */
  206. # define CLD_STOPPED CLD_STOPPED
  207. CLD_CONTINUED /* Stopped child has continued. */
  208. # define CLD_CONTINUED CLD_CONTINUED
  209. };
  210. /* `si_code' values for SIGPOLL signal. */
  211. enum
  212. {
  213. POLL_IN = 1, /* Data input available. */
  214. # define POLL_IN POLL_IN
  215. POLL_OUT, /* Output buffers available. */
  216. # define POLL_OUT POLL_OUT
  217. POLL_MSG, /* Input message available. */
  218. # define POLL_MSG POLL_MSG
  219. POLL_ERR, /* I/O error. */
  220. # define POLL_ERR POLL_ERR
  221. POLL_PRI, /* High priority input available. */
  222. # define POLL_PRI POLL_PRI
  223. POLL_HUP /* Device disconnected. */
  224. # define POLL_HUP POLL_HUP
  225. };
  226. # undef __need_siginfo_t
  227. #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
  228. #if (defined _SIGNAL_H || defined __need_sigevent_t) \
  229. && !defined __have_sigevent_t
  230. # define __have_sigevent_t 1
  231. /* Structure to transport application-defined values with signals. */
  232. # define __SIGEV_MAX_SIZE 64
  233. # define __SIGEV_HEAD_SIZE (sizeof(long) + 2*sizeof(int))
  234. # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE - __SIGEV_HEAD_SIZE) / sizeof (int))
  235. /* Forward declaration of the `pthread_attr_t' type. */
  236. struct __pthread_attr_s;
  237. /* XXX This one might need to change!!! */
  238. typedef struct sigevent
  239. {
  240. sigval_t sigev_value;
  241. int sigev_signo;
  242. int sigev_notify;
  243. union
  244. {
  245. int _pad[__SIGEV_PAD_SIZE];
  246. struct
  247. {
  248. void (*_function) (sigval_t); /* Function to start. */
  249. void *_attribute; /* Really pthread_attr_t. */
  250. } _sigev_thread;
  251. } _sigev_un;
  252. } sigevent_t;
  253. /* POSIX names to access some of the members. */
  254. # define sigev_notify_function _sigev_un._sigev_thread._function
  255. # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
  256. /* `sigev_notify' values. */
  257. enum
  258. {
  259. SIGEV_SIGNAL = 0, /* Notify via signal. */
  260. # define SIGEV_SIGNAL SIGEV_SIGNAL
  261. SIGEV_NONE, /* Other notification: meaningless. */
  262. # define SIGEV_NONE SIGEV_NONE
  263. SIGEV_THREAD, /* Deliver via thread creation. */
  264. # define SIGEV_THREAD SIGEV_THREAD
  265. SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */
  266. #define SIGEV_THREAD_ID SIGEV_THREAD_ID
  267. };
  268. #endif /* have _SIGNAL_H. */