Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/siginfo.h
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1 /* $NetBSD: siginfo.h,v 1.14 2005/12/11 12:25:21 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _SYS_SIGINFO_H_ 40 #define _SYS_SIGINFO_H_ 41 42 #include <machine/signal.h> /* XXX: __HAVE_SIGINFO */ 43 #ifdef _KERNEL 44 #include <sys/queue.h> 45 #endif 46 47 typedef union sigval { 48 int sival_int; 49 void *sival_ptr; 50 } sigval_t; 51 52 struct _ksiginfo { 53 int _signo; 54 int _code; 55 int _errno; 56 #ifdef _LP64 57 /* In _LP64 the union starts on an 8-byte boundary. */ 58 int _pad; 59 #endif 60 union { 61 struct { 62 pid_t _pid; 63 uid_t _uid; 64 sigval_t _sigval; 65 } _rt; 66 67 struct { 68 pid_t _pid; 69 uid_t _uid; 70 int _status; 71 clock_t _utime; 72 clock_t _stime; 73 } _child; 74 75 struct { 76 void *_addr; 77 int _trap; 78 } _fault; 79 80 struct { 81 long _band; 82 int _fd; 83 } _poll; 84 } _reason; 85 }; 86 87 #ifdef _KERNEL 88 typedef struct ksiginfo { 89 u_long ksi_flags; /* 4 or 8 bytes, depending on LP64 */ 90 CIRCLEQ_ENTRY(ksiginfo) ksi_list; 91 struct _ksiginfo ksi_info; 92 } ksiginfo_t; 93 94 #define KSI_TRAP 0x01 /* signal caused by trap */ 95 #define KSI_EMPTY 0x02 /* no additional information */ 96 97 /* Macros to initialize a ksiginfo_t. */ 98 #define KSI_INIT(ksi) \ 99 do { \ 100 memset((ksi), 0, sizeof(*(ksi))); \ 101 } while (/*CONSTCOND*/0) 102 103 #define KSI_INIT_EMPTY(ksi) \ 104 do { \ 105 KSI_INIT((ksi)); \ 106 (ksi)->ksi_flags = KSI_EMPTY; \ 107 } while (/*CONSTCOND*/0) 108 109 #define KSI_INIT_TRAP(ksi) \ 110 do { \ 111 KSI_INIT((ksi)); \ 112 (ksi)->ksi_flags = KSI_TRAP; \ 113 } while (/*CONSTCOND*/0) 114 115 /* Copy the part of ksiginfo_t without the queue pointers */ 116 #define KSI_COPY(fksi, tksi) \ 117 do { \ 118 (tksi)->ksi_info = (fksi)->ksi_info; \ 119 (tksi)->ksi_flags = (fksi)->ksi_flags; \ 120 } while (/*CONSTCOND*/0) 121 122 123 /* Predicate macros to test how a ksiginfo_t was generated. */ 124 #define KSI_TRAP_P(ksi) (((ksi)->ksi_flags & KSI_TRAP) != 0) 125 #define KSI_EMPTY_P(ksi) (((ksi)->ksi_flags & KSI_EMPTY) != 0) 126 127 /* 128 * Old-style signal handler "code" arguments were only non-zero for 129 * signals caused by traps. 130 */ 131 #define KSI_TRAPCODE(ksi) (KSI_TRAP_P(ksi) ? (ksi)->ksi_trap : 0) 132 #endif /* _KERNEL */ 133 134 typedef union siginfo { 135 char si_pad[128]; /* Total size; for future expansion */ 136 struct _ksiginfo _info; 137 } siginfo_t; 138 139 /** Field access macros */ 140 #define si_signo _info._signo 141 #define si_code _info._code 142 #define si_errno _info._errno 143 144 #define si_sigval _info._reason._rt._sigval 145 #define si_pid _info._reason._child._pid 146 #define si_uid _info._reason._child._uid 147 #define si_status _info._reason._child._status 148 #define si_utime _info._reason._child._utime 149 #define si_stime _info._reason._child._stime 150 151 #define si_addr _info._reason._fault._addr 152 #define si_trap _info._reason._fault._trap 153 154 #define si_band _info._reason._poll._band 155 #define si_fd _info._reason._poll._fd 156 157 #ifdef _KERNEL 158 /** Field access macros */ 159 #define ksi_signo ksi_info._signo 160 #define ksi_code ksi_info._code 161 #define ksi_errno ksi_info._errno 162 163 #define ksi_sigval ksi_info._reason._rt._sigval 164 #define ksi_pid ksi_info._reason._child._pid 165 #define ksi_uid ksi_info._reason._child._uid 166 #define ksi_status ksi_info._reason._child._status 167 #define ksi_utime ksi_info._reason._child._utime 168 #define ksi_stime ksi_info._reason._child._stime 169 170 #define ksi_addr ksi_info._reason._fault._addr 171 #define ksi_trap ksi_info._reason._fault._trap 172 173 #define ksi_band ksi_info._reason._poll._band 174 #define ksi_fd ksi_info._reason._poll._fd 175 #endif /* _KERNEL */ 176 177 /** si_code */ 178 /* SIGILL */ 179 #define ILL_ILLOPC 1 /* Illegal opcode */ 180 #define ILL_ILLOPN 2 /* Illegal operand */ 181 #define ILL_ILLADR 3 /* Illegal addressing mode */ 182 #define ILL_ILLTRP 4 /* Illegal trap */ 183 #define ILL_PRVOPC 5 /* Privileged opcode */ 184 #define ILL_PRVREG 6 /* Privileged register */ 185 #define ILL_COPROC 7 /* Coprocessor error */ 186 #define ILL_BADSTK 8 /* Internal stack error */ 187 188 /* SIGFPE */ 189 #define FPE_INTDIV 1 /* Integer divide by zero */ 190 #define FPE_INTOVF 2 /* Integer overflow */ 191 #define FPE_FLTDIV 3 /* Floating point divide by zero */ 192 #define FPE_FLTOVF 4 /* Floating point overflow */ 193 #define FPE_FLTUND 5 /* Floating point underflow */ 194 #define FPE_FLTRES 6 /* Floating point inexact result */ 195 #define FPE_FLTINV 7 /* Invalid Floating point operation */ 196 #define FPE_FLTSUB 8 /* Subscript out of range */ 197 198 /* SIGSEGV */ 199 #define SEGV_MAPERR 1 /* Address not mapped to object */ 200 #define SEGV_ACCERR 2 /* Invalid permissions for mapped object*/ 201 202 /* SIGBUS */ 203 #define BUS_ADRALN 1 /* Invalid address alignment */ 204 #define BUS_ADRERR 2 /* Non-existent physical address */ 205 #define BUS_OBJERR 3 /* Object specific hardware error */ 206 207 /* SIGTRAP */ 208 #define TRAP_BRKPT 1 /* Process breakpoint */ 209 #define TRAP_TRACE 2 /* Process trace trap */ 210 211 /* SIGCHLD */ 212 #define CLD_EXITED 1 /* Child has exited */ 213 #define CLD_KILLED 2 /* Child has terminated abnormally but */ 214 /* did not create a core file */ 215 #define CLD_DUMPED 3 /* Child has terminated abnormally and */ 216 /* created a core file */ 217 #define CLD_TRAPPED 4 /* Traced child has trapped */ 218 #define CLD_STOPPED 5 /* Child has stopped */ 219 #define CLD_CONTINUED 6 /* Stopped child has continued */ 220 221 /* SIGPOLL */ 222 #define POLL_IN 1 /* Data input available */ 223 #define POLL_OUT 2 /* Output buffers available */ 224 #define POLL_MSG 3 /* Input message available */ 225 #define POLL_ERR 4 /* I/O Error */ 226 #define POLL_PRI 5 /* High priority input available */ 227 #define POLL_HUP 4 /* Device disconnected */ 228 229 230 /** si_code */ 231 #define SI_NOINFO 32767 /* No signal specific info available */ 232 #define SI_USER 0 /* Sent by kill(2) */ 233 #define SI_QUEUE -1 /* Sent by the sigqueue(2) */ 234 #define SI_TIMER -2 /* Generated by expiration of a timer */ 235 /* set by timer_settime(2) */ 236 #define SI_ASYNCIO -3 /* Generated by completion of an */ 237 /* asynchronous I/O signal */ 238 #define SI_MESGQ -4 /* Generated by arrival of a message on */ 239 /* an empty message queue */ 240 241 #endif /* !_SYS_SIGINFO_H_ */
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