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- /* $NetBSD: signal.h,v 1.19 1995/08/13 22:51:24 mycroft Exp $ */
-
- /*
- * Copyright (c) 1982, 1986, 1989, 1991, 1993
- * The Regents of the University of California. All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)signal.h 8.2 (Berkeley) 1/21/94
- */
-
- #ifndef _SYS_SIGNAL_H_
- #define _SYS_SIGNAL_H_
-
- #include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
-
- #define _NSIG 33 /* counting 0; could be 33 (mask is 1-32) */
-
- #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
- #define NSIG _NSIG
- #endif
-
- #define SIGHUP 1 /* hangup */
- #define SIGINT 2 /* interrupt */
- #define SIGQUIT 3 /* quit */
- #define SIGILL 4 /* illegal instruction (not reset when caught) */
- #ifndef _POSIX_SOURCE
- #define SIGTRAP 5 /* trace trap (not reset when caught) */
- #endif
- #define SIGABRT 6 /* abort() */
- #ifndef _POSIX_SOURCE
- #define SIGIOT SIGABRT /* compatibility */
- #define SIGEMT 7 /* EMT instruction */
- #endif
- #define SIGFPE 8 /* floating point exception */
- #define SIGKILL 9 /* kill (cannot be caught or ignored) */
- #ifndef _POSIX_SOURCE
- #define SIGBUS 10 /* bus error */
- #endif
- #define SIGSEGV 11 /* segmentation violation */
- #ifndef _POSIX_SOURCE
- #define SIGSYS 12 /* bad argument to system call */
- #endif
- #define SIGPIPE 13 /* write on a pipe with no one to read it */
- #define SIGALRM 14 /* alarm clock */
- #define SIGTERM 15 /* software termination signal from kill */
- #ifndef _POSIX_SOURCE
- #define SIGURG 16 /* urgent condition on IO channel */
- #endif
- #define SIGSTOP 17 /* sendable stop signal not from tty */
- #define SIGTSTP 18 /* stop signal from tty */
- #define SIGCONT 19 /* continue a stopped process */
- #define SIGCHLD 20 /* to parent on child stop or exit */
- #define SIGTTIN 21 /* to readers pgrp upon background tty read */
- #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
- #ifndef _POSIX_SOURCE
- #define SIGIO 23 /* input/output possible signal */
- #define SIGXCPU 24 /* exceeded CPU time limit */
- #define SIGXFSZ 25 /* exceeded file size limit */
- #define SIGVTALRM 26 /* virtual time alarm */
- #define SIGPROF 27 /* profiling time alarm */
- #define SIGWINCH 28 /* window size changes */
- #define SIGINFO 29 /* information request */
- #endif
- #define SIGUSR1 30 /* user defined signal 1 */
- #define SIGUSR2 31 /* user defined signal 2 */
- #define SIGMSG 32 /* an AmigaOS signal has been set. SIGMSG is normally ignored.
- (code is the mask of new signals) */
-
- #if defined(_ANSI_SOURCE) || defined(__cplusplus)
- /*
- * Language spec sez we must list exactly one parameter, even though we
- * actually supply three. Ugh!
- */
- #define SIG_DFL (void (*)(int))0
- #define SIG_IGN (void (*)(int))1
- #define SIG_ERR (void (*)(int))-1
- #else
- #define SIG_DFL (void (*)())0
- #define SIG_IGN (void (*)())1
- #define SIG_ERR (void (*)())-1
- #endif
-
- #ifndef _ANSI_SOURCE
- typedef unsigned int sigset_t;
-
- /*
- * Signal vector "template" used in sigaction call.
- */
- struct sigaction {
- void (*sa_handler)(); /* signal handler */
- sigset_t sa_mask; /* signal mask to apply */
- int sa_flags; /* see signal options below */
- };
- #ifndef _POSIX_SOURCE
- #define SA_ONSTACK 0x0001 /* take signal on signal stack */
- #define SA_RESTART 0x0002 /* restart system on signal return */
- #define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */
- #define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */
- #ifdef COMPAT_SUNOS
- #define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */
- #endif
- #endif
- #define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
-
- /*
- * Flags for sigprocmask:
- */
- #define SIG_BLOCK 1 /* block specified signal set */
- #define SIG_UNBLOCK 2 /* unblock specified signal set */
- #define SIG_SETMASK 3 /* set specified signal set */
-
- #ifndef _POSIX_SOURCE
- #ifndef _KERNEL
- #include <sys/cdefs.h>
- #endif
- typedef void (*sig_t) __P((int)); /* type of signal function */
-
- /*
- * Structure used in sigaltstack call.
- */
- struct sigaltstack {
- char *ss_base; /* signal stack base */
- int ss_size; /* signal stack length */
- int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */
- };
- #define SS_ONSTACK 0x0001 /* take signals on alternate stack */
- #define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
- #define MINSIGSTKSZ 8192 /* minimum allowable stack */
- #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
-
- /*
- * 4.3 compatibility:
- * Signal vector "template" used in sigvec call.
- */
- struct sigvec {
- void (*sv_handler)(); /* signal handler */
- int sv_mask; /* signal mask to apply */
- int sv_flags; /* see signal options below */
- };
- #define SV_ONSTACK SA_ONSTACK
- #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
- #define SV_RESETHAND SA_RESETHAND
- #define sv_onstack sv_flags /* isn't compatibility wonderful! */
-
- /*
- * Structure used in sigstack call.
- */
- struct sigstack {
- char *ss_sp; /* signal stack pointer */
- int ss_onstack; /* current status */
- };
-
- /*
- * Macro for converting signal number to a mask suitable for
- * sigblock().
- */
- #define sigmask(m) (1 << ((m)-1))
-
- #define BADSIG SIG_ERR
-
- #endif /* !_POSIX_SOURCE */
- #endif /* !_ANSI_SOURCE */
-
- #ifdef _KERNEL
-
- #define SIG_CATCH (void (*)())2
- #define SIG_HOLD (void (*)())3
-
- #define sigcantmask (sigmask(SIGKILL)|sigmask(SIGSTOP))
- /*
- * get signal action for process and signal; currently only for current process
- */
- #define SIGACTION(p, sig) (u.u_signal[(sig)])
-
- /*
- * Determine signal that should be delivered to process p, the current process,
- * 0 if none. If there is a pending stop signal with default action,
- * the process stops in issig().
- */
- #define CURSIG(p) \
- (((p)->p_sig == 0 || \
- (((p)->p_flag&STRC) == 0 && ((p)->p_sig &~ (p)->p_sigmask) == 0)) ? \
- 0 : issig(p))
-
- /*
- * Clear a pending signal from a process.
- */
- #define CLRSIG(p, sig) { (p)->p_sig &= ~sigmask(sig); }
-
- #endif
-
- /*
- * For historical reasons; programs expect signal's return value to be
- * defined by <sys/signal.h>.
- */
- __BEGIN_DECLS
- void (*signal __P((int, void (*) __P((int))))) __P((int));
- __END_DECLS
- #endif /* !_SYS_SIGNAL_H_ */
-