siginfo.h 10 KB

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  1. /* siginfo_t, sigevent and constants. Linux/ia64 version.
  2. Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
  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. #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. # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
  36. typedef struct siginfo
  37. {
  38. int si_signo; /* Signal number. */
  39. int si_errno; /* If non-zero, an errno value associated with
  40. this signal, as defined in <errno.h>. */
  41. int si_code; /* Signal code. */
  42. int __pad0; /* Explicit padding. */
  43. union
  44. {
  45. int _pad[__SI_PAD_SIZE];
  46. /* kill(). */
  47. struct
  48. {
  49. __pid_t si_pid; /* Sending process ID. */
  50. __uid_t si_uid; /* Real user ID of sending process. */
  51. } _kill;
  52. /* POSIX.1b timers. */
  53. struct
  54. {
  55. int si_tid; /* Timer ID. */
  56. int si_overrun; /* Overrun count. */
  57. sigval_t si_sigval; /* Signal value. */
  58. } _timer;
  59. /* POSIX.1b signals. */
  60. struct
  61. {
  62. __pid_t si_pid; /* Sending process ID. */
  63. __uid_t si_uid; /* Real user ID of sending process. */
  64. sigval_t si_sigval; /* Signal value. */
  65. } _rt;
  66. /* SIGCHLD. */
  67. struct
  68. {
  69. __pid_t si_pid; /* Which child. */
  70. __uid_t si_uid; /* Real user ID of sending process. */
  71. int si_status; /* Exit value or signal. */
  72. __clock_t si_utime;
  73. __clock_t si_stime;
  74. } _sigchld;
  75. /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
  76. struct
  77. {
  78. void *si_addr; /* Faulting insn/memory ref. */
  79. int _si_imm;
  80. unsigned int _si_flags;
  81. unsigned long int _si_isr;
  82. } _sigfault;
  83. /* SIGPOLL. */
  84. struct
  85. {
  86. long int si_band; /* Band event for SIGPOLL. */
  87. int si_fd;
  88. } _sigpoll;
  89. /* SIGSYS. */
  90. struct
  91. {
  92. void *_call_addr; /* Calling user insn. */
  93. int _syscall; /* Triggering system call number. */
  94. unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
  95. } _sigsys;
  96. } _sifields;
  97. } siginfo_t;
  98. /* X/Open requires some more fields with fixed names. */
  99. # define si_pid _sifields._kill.si_pid
  100. # define si_uid _sifields._kill.si_uid
  101. # define si_timerid _sifields._timer.si_tid
  102. # define si_overrun _sifields._timer.si_overrun
  103. # define si_status _sifields._sigchld.si_status
  104. # define si_utime _sifields._sigchld.si_utime
  105. # define si_stime _sifields._sigchld.si_stime
  106. # define si_value _sifields._rt.si_sigval
  107. # define si_int _sifields._rt.si_sigval.sival_int
  108. # define si_ptr _sifields._rt.si_sigval.sival_ptr
  109. # define si_addr _sifields._sigfault.si_addr
  110. # define si_band _sifields._sigpoll.si_band
  111. # define si_fd _sifields._sigpoll.si_fd
  112. # define si_call_addr _sifields._sigsys._call_addr
  113. # define si_syscall _sifields._sigsys._syscall
  114. # define si_arch _sifields._sigsys._arch
  115. # ifdef __USE_GNU
  116. # define si_imm _sifields._sigfault._si_imm
  117. # define si_segvflags _sifields._sigfault._si_flags
  118. # define si_isr _sifields._sigfault._si_isr
  119. # endif
  120. /* Values for `si_code'. Positive values are reserved for kernel-generated
  121. signals. */
  122. enum
  123. {
  124. SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */
  125. # define SI_ASYNCNL SI_ASYNCNL
  126. SI_TKILL = -6, /* Sent by tkill. */
  127. # define SI_TKILL SI_TKILL
  128. SI_SIGIO, /* Sent by queued SIGIO. */
  129. # define SI_SIGIO SI_SIGIO
  130. SI_ASYNCIO, /* Sent by AIO completion. */
  131. # define SI_ASYNCIO SI_ASYNCIO
  132. SI_MESGQ, /* Sent by real time mesq state change. */
  133. # define SI_MESGQ SI_MESGQ
  134. SI_TIMER, /* Sent by timer expiration. */
  135. # define SI_TIMER SI_TIMER
  136. SI_QUEUE, /* Sent by sigqueue. */
  137. # define SI_QUEUE SI_QUEUE
  138. SI_USER, /* Sent by kill, sigsend, raise. */
  139. # define SI_USER SI_USER
  140. SI_KERNEL = 0x80 /* Send by kernel. */
  141. #define SI_KERNEL SI_KERNEL
  142. };
  143. /* `si_code' values for SIGILL signal. */
  144. enum
  145. {
  146. ILL_ILLOPC = 1, /* Illegal opcode. */
  147. # define ILL_ILLOPC ILL_ILLOPC
  148. ILL_ILLOPN, /* Illegal operand. */
  149. # define ILL_ILLOPN ILL_ILLOPN
  150. ILL_ILLADR, /* Illegal addressing mode. */
  151. # define ILL_ILLADR ILL_ILLADR
  152. ILL_ILLTRP, /* Illegal trap. */
  153. # define ILL_ILLTRP ILL_ILLTRP
  154. ILL_PRVOPC, /* Privileged opcode. */
  155. # define ILL_PRVOPC ILL_PRVOPC
  156. ILL_PRVREG, /* Privileged register. */
  157. # define ILL_PRVREG ILL_PRVREG
  158. ILL_COPROC, /* Coprocessor error. */
  159. # define ILL_COPROC ILL_COPROC
  160. ILL_BADSTK, /* Internal stack error. */
  161. # define ILL_BADSTK ILL_BADSTK
  162. ILL_BADIADDR /* Unimplemented instruction address. */
  163. # define ILL_BADIADDR ILL_BADIADDR
  164. # ifdef __USE_GNU
  165. , ILL_BREAK
  166. # define ILL_BREAK ILL_BREAK
  167. # endif
  168. };
  169. /* `si_code' values for SIGFPE signal. */
  170. enum
  171. {
  172. FPE_INTDIV = 1, /* Integer divide by zero. */
  173. # define FPE_INTDIV FPE_INTDIV
  174. FPE_INTOVF, /* Integer overflow. */
  175. # define FPE_INTOVF FPE_INTOVF
  176. FPE_FLTDIV, /* Floating point divide by zero. */
  177. # define FPE_FLTDIV FPE_FLTDIV
  178. FPE_FLTOVF, /* Floating point overflow. */
  179. # define FPE_FLTOVF FPE_FLTOVF
  180. FPE_FLTUND, /* Floating point underflow. */
  181. # define FPE_FLTUND FPE_FLTUND
  182. FPE_FLTRES, /* Floating point inexact result. */
  183. # define FPE_FLTRES FPE_FLTRES
  184. FPE_FLTINV, /* Floating point invalid operation. */
  185. # define FPE_FLTINV FPE_FLTINV
  186. FPE_FLTSUB /* Subscript out of range. */
  187. # define FPE_FLTSUB FPE_FLTSUB
  188. # ifdef __USE_GNU
  189. , FPE_DECOVF
  190. # define FPE_DECOVF FPE_DECOVF
  191. , FPE_DECDIV
  192. # define FPE_DECDIV FPE_DECDIV
  193. , FPE_DECERR
  194. # define FPE_DECERR FPE_DECERR
  195. , FPE_INVASC
  196. # define FPE_INVASC FPE_INVASC
  197. , FPE_INVDEC
  198. # define FPE_INVDEC FPE_INVDEC
  199. # endif
  200. };
  201. /* `si_code' values for SIGSEGV signal. */
  202. enum
  203. {
  204. SEGV_MAPERR = 1, /* Address not mapped to object. */
  205. # define SEGV_MAPERR SEGV_MAPERR
  206. SEGV_ACCERR /* Invalid permissions for mapped object. */
  207. # define SEGV_ACCERR SEGV_ACCERR
  208. # ifdef __USE_GNU
  209. , SEGV_PSTKOVF /* Paragraph stack overflow. */
  210. # define SEGV_PSTKOVF SEGV_PSTKOVF
  211. # endif
  212. };
  213. /* `si_code' values for SIGBUS signal. */
  214. enum
  215. {
  216. BUS_ADRALN = 1, /* Invalid address alignment. */
  217. # define BUS_ADRALN BUS_ADRALN
  218. BUS_ADRERR, /* Non-existant physical address. */
  219. # define BUS_ADRERR BUS_ADRERR
  220. BUS_OBJERR /* Object specific hardware error. */
  221. # define BUS_OBJERR BUS_OBJERR
  222. };
  223. /* `si_code' values for SIGTRAP signal. */
  224. enum
  225. {
  226. TRAP_BRKPT = 1, /* Process breakpoint. */
  227. # define TRAP_BRKPT TRAP_BRKPT
  228. TRAP_TRACE /* Process trace trap. */
  229. # define TRAP_TRACE TRAP_TRACE
  230. # ifdef __USE_GNU
  231. , TRAP_BRANCH
  232. # define TRAP_BRANCH TRAP_BRANCH
  233. , TRAP_HWBKPT
  234. # define TRAP_HWBKPT TRAP_HWBKPT
  235. # endif
  236. };
  237. /* `si_code' values for SIGCHLD signal. */
  238. enum
  239. {
  240. CLD_EXITED = 1, /* Child has exited. */
  241. # define CLD_EXITED CLD_EXITED
  242. CLD_KILLED, /* Child was killed. */
  243. # define CLD_KILLED CLD_KILLED
  244. CLD_DUMPED, /* Child terminated abnormally. */
  245. # define CLD_DUMPED CLD_DUMPED
  246. CLD_TRAPPED, /* Traced child has trapped. */
  247. # define CLD_TRAPPED CLD_TRAPPED
  248. CLD_STOPPED, /* Child has stopped. */
  249. # define CLD_STOPPED CLD_STOPPED
  250. CLD_CONTINUED /* Stopped child has continued. */
  251. # define CLD_CONTINUED CLD_CONTINUED
  252. };
  253. /* `si_code' values for SIGPOLL signal. */
  254. enum
  255. {
  256. POLL_IN = 1, /* Data input available. */
  257. # define POLL_IN POLL_IN
  258. POLL_OUT, /* Output buffers available. */
  259. # define POLL_OUT POLL_OUT
  260. POLL_MSG, /* Input message available. */
  261. # define POLL_MSG POLL_MSG
  262. POLL_ERR, /* I/O error. */
  263. # define POLL_ERR POLL_ERR
  264. POLL_PRI, /* High priority input available. */
  265. # define POLL_PRI POLL_PRI
  266. POLL_HUP /* Device disconnected. */
  267. # define POLL_HUP POLL_HUP
  268. };
  269. # undef __need_siginfo_t
  270. #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
  271. #if (defined _SIGNAL_H || defined __need_sigevent_t) \
  272. && !defined __have_sigevent_t
  273. # define __have_sigevent_t 1
  274. /* Structure to transport application-defined values with signals. */
  275. # define __SIGEV_MAX_SIZE 64
  276. # if __WORDSIZE == 64
  277. # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
  278. # else
  279. # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
  280. # endif
  281. typedef struct sigevent
  282. {
  283. sigval_t sigev_value;
  284. int sigev_signo;
  285. int sigev_notify;
  286. union
  287. {
  288. int _pad[__SIGEV_PAD_SIZE];
  289. /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
  290. thread to receive the signal. */
  291. __pid_t _tid;
  292. struct
  293. {
  294. void (*_function) (sigval_t); /* Function to start. */
  295. void *_attribute; /* Really pthread_attr_t. */
  296. } _sigev_thread;
  297. } _sigev_un;
  298. } sigevent_t;
  299. /* POSIX names to access some of the members. */
  300. # define sigev_notify_function _sigev_un._sigev_thread._function
  301. # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
  302. /* `sigev_notify' values. */
  303. enum
  304. {
  305. SIGEV_SIGNAL = 0, /* Notify via signal. */
  306. # define SIGEV_SIGNAL SIGEV_SIGNAL
  307. SIGEV_NONE, /* Other notification: meaningless. */
  308. # define SIGEV_NONE SIGEV_NONE
  309. SIGEV_THREAD, /* Deliver via thread creation. */
  310. # define SIGEV_THREAD SIGEV_THREAD
  311. SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */
  312. #define SIGEV_THREAD_ID SIGEV_THREAD_ID
  313. };
  314. #endif /* have _SIGNAL_H. */