| t2ex/bsd_source/lib/libc/src_bsd/include/sys/signal.h | bare source | permlink (0.01 seconds) |
1: /* $OpenBSD: signal.h,v 1.23 2011/11/22 21:13:30 guenther Exp $ */ 2: /* $NetBSD: signal.h,v 1.21 1996/02/09 18:25:32 christos Exp $ */ 3: 4: /* 5: * Copyright (c) 1982, 1986, 1989, 1991, 1993 6: * The Regents of the University of California. All rights reserved. 7: * (c) UNIX System Laboratories, Inc. 8: * All or some portions of this file are derived from material licensed 9: * to the University of California by American Telephone and Telegraph 10: * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11: * the permission of UNIX System Laboratories, Inc. 12: * 13: * Redistribution and use in source and binary forms, with or without 14: * modification, are permitted provided that the following conditions 15: * are met: 16: * 1. Redistributions of source code must retain the above copyright 17: * notice, this list of conditions and the following disclaimer. 18: * 2. Redistributions in binary form must reproduce the above copyright 19: * notice, this list of conditions and the following disclaimer in the 20: * documentation and/or other materials provided with the distribution. 21: * 3. Neither the name of the University nor the names of its contributors 22: * may be used to endorse or promote products derived from this software 23: * without specific prior written permission. 24: * 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35: * SUCH DAMAGE. 36: * 37: * @(#)signal.h 8.2 (Berkeley) 1/21/94 38: */ 39: 40: #ifndef _SYS_SIGNAL_H_ 41: #define _SYS_SIGNAL_H_ 42: 43: #include <sys/cdefs.h> 44: #include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */ 45: 46: #define _NSIG 33 /* counting 0 (mask is 1-32) */ 47: 48: #if __BSD_VISIBLE 49: #define NSIG _NSIG 50: #endif 51: 52: #define SIGHUP 1 /* hangup */ 53: #define SIGINT 2 /* interrupt */ 54: #define SIGQUIT 3 /* quit */ 55: #define SIGILL 4 /* illegal instruction (not reset when caught) */ 56: #define SIGTRAP 5 /* trace trap (not reset when caught) */ 57: #define SIGABRT 6 /* abort() */ 58: #if __BSD_VISIBLE 59: #define SIGIOT SIGABRT /* compatibility */ 60: #define SIGEMT 7 /* EMT instruction */ 61: #endif 62: #define SIGFPE 8 /* floating point exception */ 63: #define SIGKILL 9 /* kill (cannot be caught or ignored) */ 64: #define SIGBUS 10 /* bus error */ 65: #define SIGSEGV 11 /* segmentation violation */ 66: #define SIGSYS 12 /* bad argument to system call */ 67: #define SIGPIPE 13 /* write on a pipe with no one to read it */ 68: #define SIGALRM 14 /* alarm clock */ 69: #define SIGTERM 15 /* software termination signal from kill */ 70: #define SIGURG 16 /* urgent condition on IO channel */ 71: #define SIGSTOP 17 /* sendable stop signal not from tty */ 72: #define SIGTSTP 18 /* stop signal from tty */ 73: #define SIGCONT 19 /* continue a stopped process */ 74: #define SIGCHLD 20 /* to parent on child stop or exit */ 75: #define SIGTTIN 21 /* to readers pgrp upon background tty read */ 76: #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */ 77: #if __BSD_VISIBLE 78: #define SIGIO 23 /* input/output possible signal */ 79: #endif 80: #define SIGXCPU 24 /* exceeded CPU time limit */ 81: #define SIGXFSZ 25 /* exceeded file size limit */ 82: #define SIGVTALRM 26 /* virtual time alarm */ 83: #define SIGPROF 27 /* profiling time alarm */ 84: #if __BSD_VISIBLE 85: #define SIGWINCH 28 /* window size changes */ 86: #define SIGINFO 29 /* information request */ 87: #endif 88: #define SIGUSR1 30 /* user defined signal 1 */ 89: #define SIGUSR2 31 /* user defined signal 2 */ 90: #if __BSD_VISIBLE 91: #define SIGTHR 32 /* thread library AST */ 92: #endif 93: 94: /* 95: * Language spec says we must list exactly one parameter, even though we 96: * actually supply three. Ugh! 97: */ 98: #define SIG_DFL (void (*)(int))0 99: #define SIG_IGN (void (*)(int))1 100: #define SIG_ERR (void (*)(int))-1 101: 102: #if __POSIX_VISIBLE || __XPG_VISIBLE 103: typedef unsigned int sigset_t; 104: 105: #include <sys/siginfo.h> 106: 107: /* 108: * Signal vector "template" used in sigaction call. 109: */ 110: struct sigaction { 111: union { /* signal handler */ 112: void (*__sa_handler)(int); 113: void (*__sa_sigaction)(int, siginfo_t *, void *); 114: } __sigaction_u; 115: sigset_t sa_mask; /* signal mask to apply */ 116: int sa_flags; /* see signal options below */ 117: }; 118: 119: /* if SA_SIGINFO is set, sa_sigaction is to be used instead of sa_handler. */ 120: #define sa_handler __sigaction_u.__sa_handler 121: #define sa_sigaction __sigaction_u.__sa_sigaction 122: 123: #if __XPG_VISIBLE >= 500 124: #define SA_ONSTACK 0x0001 /* take signal on signal stack */ 125: #define SA_RESTART 0x0002 /* restart system on signal return */ 126: #define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */ 127: #define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */ 128: #define SA_NOCLDWAIT 0x0020 /* don't create zombies (assign to pid 1) */ 129: #endif /* __XPG_VISIBLE >= 500 */ 130: #define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */ 131: #if __POSIX_VISIBLE >= 199309 || __XPG_VISIBLE >= 500 132: #define SA_SIGINFO 0x0040 /* generate siginfo_t */ 133: #endif 134: 135: /* 136: * Flags for sigprocmask: 137: */ 138: #define SIG_BLOCK 1 /* block specified signal set */ 139: #define SIG_UNBLOCK 2 /* unblock specified signal set */ 140: #define SIG_SETMASK 3 /* set specified signal set */ 141: #endif /* __POSIX_VISIBLE || __XPG_VISIBLE */ 142: 143: #if __BSD_VISIBLE 144: typedef void (*sig_t)(int); /* type of signal function */ 145: 146: /* 147: * 4.3 compatibility: 148: * Signal vector "template" used in sigvec call. 149: */ 150: struct sigvec { 151: void (*sv_handler)(int); /* signal handler */ 152: int sv_mask; /* signal mask to apply */ 153: int sv_flags; /* see signal options below */ 154: }; 155: #define SV_ONSTACK SA_ONSTACK 156: #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */ 157: #define SV_RESETHAND SA_RESETHAND 158: #define sv_onstack sv_flags /* isn't compatibility wonderful! */ 159: 160: /* 161: * Macro for converting signal number to a mask suitable for 162: * sigblock(). 163: */ 164: #define sigmask(m) (1U << ((m)-1)) 165: 166: #define BADSIG SIG_ERR 167: 168: #endif /* __BSD_VISIBLE */ 169: 170: #if __BSD_VISIBLE || __XPG_VISIBLE >= 420 171: /* 172: * Structure used in sigaltstack call. 173: */ 174: typedef struct sigaltstack { 175: void *ss_sp; /* signal stack base */ 176: size_t ss_size; /* signal stack length */ 177: int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */ 178: } stack_t; 179: #define SS_ONSTACK 0x0001 /* take signals on alternate stack */ 180: #define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */ 181: #define MINSIGSTKSZ 8192 /* minimum allowable stack */ 182: #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */ 183: 184: typedef struct sigcontext ucontext_t; 185: #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */ 186: 187: /* 188: * For historical reasons; programs expect signal's return value to be 189: * defined by <sys/signal.h>. 190: */ 191: __BEGIN_DECLS 192: void (*signal(int, void (*)(int)))(int); 193: __END_DECLS 194: #endif /* !_SYS_SIGNAL_H_ */