Annotation of prex-old/include/sys/signal.h, Revision 1.1
1.1 ! nbrk 1: /*
! 2: * Copyright (c) 1982, 1986, 1989, 1991, 1993
! 3: * The Regents of the University of California. All rights reserved.
! 4: * (c) UNIX System Laboratories, Inc.
! 5: * All or some portions of this file are derived from material licensed
! 6: * to the University of California by American Telephone and Telegraph
! 7: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
! 8: * the permission of UNIX System Laboratories, Inc.
! 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. Neither the name of the University nor the names of its contributors
! 19: * may be used to endorse or promote products derived from this software
! 20: * without specific prior written permission.
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 32: * SUCH DAMAGE.
! 33: *
! 34: * @(#)signal.h 8.4 (Berkeley) 5/4/95
! 35: */
! 36:
! 37: #ifndef _SYS_SIGNAL_H_
! 38: #define _SYS_SIGNAL_H_
! 39:
! 40: #define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
! 41:
! 42: #include <machine/signal.h> /* sigcontext */
! 43:
! 44: #define SIGHUP 1 /* hangup */
! 45: #define SIGINT 2 /* interrupt */
! 46: #define SIGQUIT 3 /* quit */
! 47: #define SIGILL 4 /* illegal instruction (not reset when caught) */
! 48: #define SIGTRAP 5 /* trace trap (not reset when caught) */
! 49: #define SIGABRT 6 /* abort() */
! 50: #define SIGIOT SIGABRT /* compatibility */
! 51: #define SIGEMT 7 /* EMT instruction */
! 52: #define SIGFPE 8 /* floating point exception */
! 53: #define SIGKILL 9 /* kill (cannot be caught or ignored) */
! 54: #define SIGBUS 10 /* bus error */
! 55: #define SIGSEGV 11 /* segmentation violation */
! 56: #define SIGSYS 12 /* bad argument to system call */
! 57: #define SIGPIPE 13 /* write on a pipe with no one to read it */
! 58: #define SIGALRM 14 /* alarm clock */
! 59: #define SIGTERM 15 /* software termination signal from kill */
! 60: #define SIGURG 16 /* urgent condition on IO channel */
! 61: #define SIGSTOP 17 /* sendable stop signal not from tty */
! 62: #define SIGTSTP 18 /* stop signal from tty */
! 63: #define SIGCONT 19 /* continue a stopped process */
! 64: #define SIGCHLD 20 /* to parent on child stop or exit */
! 65: #define SIGTTIN 21 /* to readers pgrp upon background tty read */
! 66: #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
! 67: #define SIGIO 23 /* input/output possible signal */
! 68: #define SIGXCPU 24 /* exceeded CPU time limit */
! 69: #define SIGXFSZ 25 /* exceeded file size limit */
! 70: #define SIGVTALRM 26 /* virtual time alarm */
! 71: #define SIGPROF 27 /* profiling time alarm */
! 72: #define SIGWINCH 28 /* window size changes */
! 73: #define SIGINFO 29 /* information request */
! 74: #define SIGUSR1 30 /* user defined signal 1 */
! 75: #define SIGUSR2 31 /* user defined signal 2 */
! 76:
! 77: #ifndef KERNEL
! 78:
! 79: /*
! 80: * Language spec sez we must list exactly one parameter, even though we
! 81: * actually supply three. Ugh!
! 82: */
! 83: #define SIG_DFL (void (*)(int))0
! 84: #define SIG_IGN (void (*)(int))1
! 85: #define SIG_ERR (void (*)(int))-1
! 86:
! 87: typedef unsigned int sigset_t;
! 88:
! 89: union sigval {
! 90: int sival_int;
! 91: void *sival_ptr;
! 92: };
! 93:
! 94: struct siginfo {
! 95: int si_signo; /* redundant signal number */
! 96: int si_code; /* facility that raised this signal */
! 97: union sigval si_value; /* value that was queued with signal */
! 98: };
! 99:
! 100: typedef struct siginfo siginfo_t;
! 101:
! 102: /*
! 103: * Signal vector "template" used in sigaction call.
! 104: */
! 105: struct sigaction {
! 106: union {
! 107: void (*__sa_handler) (int);
! 108: void (*__sa_sigaction) (int, siginfo_t *, void *);
! 109: } __sigaction_u;
! 110: sigset_t sa_mask;
! 111: int sa_flags;
! 112: };
! 113:
! 114: #define sa_handler __sigaction_u.__sa_handler
! 115: #define sa_sigaction __sigaction_u.__sa_sigaction
! 116:
! 117: /* sa_flags bits */
! 118:
! 119: #define SA_ONSTACK 0x0001 /* take signal on signal stack */
! 120: #define SA_RESTART 0x0002 /* restart system on signal return */
! 121: #define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */
! 122: #define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
! 123: #define SA_SIGINFO 0x0040 /* take sa_sigaction handler */
! 124:
! 125: /*
! 126: * Flags for sigprocmask:
! 127: */
! 128: #define SIG_BLOCK 1 /* block specified signal set */
! 129: #define SIG_UNBLOCK 2 /* unblock specified signal set */
! 130: #define SIG_SETMASK 3 /* set specified signal set */
! 131:
! 132: #include <sys/cdefs.h>
! 133:
! 134: typedef void (*sig_t)(int); /* type of signal function */
! 135:
! 136: /*
! 137: * Structure used in sigaltstack call.
! 138: */
! 139: struct sigaltstack {
! 140: char *ss_base; /* signal stack base */
! 141: int ss_size; /* signal stack length */
! 142: int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */
! 143: };
! 144: #define MINSIGSTKSZ 8192 /* minimum allowable stack */
! 145: #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
! 146:
! 147: /*
! 148: * 4.3 compatibility:
! 149: * Signal vector "template" used in sigvec call.
! 150: */
! 151: struct sigvec {
! 152: void (*sv_handler)(int); /* signal handler */
! 153: int sv_mask; /* signal mask to apply */
! 154: int sv_flags; /* see signal options below */
! 155: };
! 156:
! 157: #define SV_ONSTACK SA_ONSTACK
! 158: #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
! 159: #define sv_onstack sv_flags /* isn't compatibility wonderful! */
! 160:
! 161: /*
! 162: * Structure used in sigstack call.
! 163: */
! 164: struct sigstack {
! 165: char *ss_sp; /* signal stack pointer */
! 166: int ss_onstack; /* current status */
! 167: };
! 168:
! 169: /*
! 170: * Macro for converting signal number to a mask suitable for
! 171: * sigblock().
! 172: */
! 173: #define sigmask(m) (1 << ((m)-1))
! 174:
! 175: #define BADSIG SIG_ERR
! 176:
! 177: /*
! 178: * For historical reasons; programs expect signal's return value to be
! 179: * defined by <sys/signal.h>.
! 180: */
! 181: __BEGIN_DECLS
! 182: void (*signal(int, void (*)(int)))(int);
! 183: __END_DECLS
! 184:
! 185: #endif /* !KERNEL */
! 186: #endif /* !_SYS_SIGNAL_H_ */
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