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- /*
- * Mach Operating System
- * Copyright (c) 1992 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * HISTORY
- * $Log: signalvar.h,v $
- * Revision 2.2 92/07/08 16:20:42 mrt
- * Corrected declaration of sendsig to have 6 parameters.
- * [92/06/26 mrt]
- *
- * Revision 2.1 92/04/21 17:15:41 rwd
- * BSDSS
- *
- *
- */
-
- /*
- * Copyright (c) 1991 Regents of the University of California.
- * All rights reserved.
- *
- * 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.
- *
- * @(#)signalvar.h 7.1 (Berkeley) 5/9/91
- */
-
- #ifndef _SIGNALVAR_H_ /* tmp for user.h */
- #define _SIGNALVAR_H_
-
-
- /*
- * Kernel signal definitions and data structures,
- * not exported to user programs.
- */
-
- /*
- * Process signal actions and state, needed only within the process
- * (not necessarily resident).
- */
- struct sigacts {
- sig_t ps_sigact[NSIG]; /* disposition of signals */
- sigset_t ps_catchmask[NSIG]; /* signals to be blocked */
- sigset_t ps_sigonstack; /* signals to take on sigstack */
- sigset_t ps_sigintr; /* signals that interrupt syscalls */
- sigset_t ps_oldmask; /* saved mask from before sigpause */
- int ps_flags; /* signal flags, below */
- struct sigstack ps_sigstack; /* sp & on stack state variable */
- int ps_sig; /* for core dump/debugger XXX */
- int ps_code; /* for core dump/debugger XXX */
- };
-
- #define ps_onstack ps_sigstack.ss_onstack
- #define ps_sigsp ps_sigstack.ss_sp
-
- /* signal flags */
- #define SA_OLDMASK 0x01 /* need to restore mask before pause */
-
- /* additional signal action values, used only temporarily/internally */
- #define SIG_CATCH (void (*)())2
- #define SIG_HOLD (void (*)())3
-
- /*
- * get signal action for process and signal; currently only for current process
- */
- #define SIGACTION(p, sig) (p->p_sigacts->ps_sigact[(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))
-
- #define HAVE_SIGNALS(p) \
- ( (p)->p_sig & ~ \
- ( (p)->p_sigmask \
- | ( ((p)->p_flag&STRC) ? 0 : (p)->p_sigignore) \
- ) \
- )
-
- #define EXITING(p) (((p)->p_flag & SWEXIT) != 0)
- /*
- * Clear a pending signal from a process.
- */
- #define CLRSIG(p, sig) { (p)->p_sig &= ~sigmask(sig); }
-
- /*
- * Signal properties and actions.
- * The array below categorizes the signals and their default actions
- * according to the following properties:
- */
- #define SA_KILL 0x01 /* terminates process by default */
- #define SA_CORE 0x02 /* ditto and coredumps */
- #define SA_STOP 0x04 /* suspend process */
- #define SA_TTYSTOP (0x08|SA_STOP) /* ditto, from tty */
- #define SA_IGNORE 0x10 /* ignore by default */
- #define SA_CONT 0x20 /* continue if suspended */
- #define SA_CANTMASK 0x40 /* non-maskable, catchable */
-
- #ifdef SIGPROP
- int sigprop[NSIG + 1] = {
- 0, /* unused */
- SA_KILL, /* SIGHUP */
- SA_KILL, /* SIGINT */
- SA_KILL|SA_CORE, /* SIGQUIT */
- SA_KILL|SA_CORE, /* SIGILL */
- SA_KILL|SA_CORE, /* SIGTRAP */
- SA_KILL|SA_CORE, /* SIGABRT */
- SA_KILL|SA_CORE, /* SIGEMT */
- SA_KILL|SA_CORE, /* SIGFPE */
- SA_KILL, /* SIGKILL */
- SA_KILL|SA_CORE, /* SIGBUS */
- SA_KILL|SA_CORE, /* SIGSEGV */
- SA_KILL|SA_CORE, /* SIGSYS */
- SA_KILL, /* SIGPIPE */
- SA_KILL, /* SIGALRM */
- SA_KILL, /* SIGTERM */
- SA_IGNORE, /* SIGURG */
- SA_STOP, /* SIGSTOP */
- SA_TTYSTOP, /* SIGTSTP */
- SA_IGNORE|SA_CONT, /* SIGCONT */
- SA_IGNORE, /* SIGCHLD */
- SA_TTYSTOP, /* SIGTTIN */
- SA_TTYSTOP, /* SIGTTOU */
- SA_IGNORE, /* SIGIO */
- SA_KILL, /* SIGXCPU */
- SA_KILL, /* SIGXFSZ */
- SA_KILL, /* SIGVTALRM */
- SA_KILL, /* SIGPROF */
- SA_IGNORE, /* SIGWINCH */
- SA_IGNORE, /* SIGINFO */
- SA_KILL, /* SIGUSR1 */
- SA_KILL, /* SIGUSR2 */
- };
-
- #define stopsigmask (sigmask(SIGSTOP)|sigmask(SIGTSTP)|\
- sigmask(SIGTTIN)|sigmask(SIGTTOU))
- #define contsigmask (sigmask(SIGCONT))
-
- #endif /* SIGPROP */
-
- #define sigcantmask (sigmask(SIGKILL)|sigmask(SIGSTOP))
-
- #ifdef KERNEL
- #include <uxkern/import_mach.h>
- /*
- * Machine-independent functions:
- */
- void siginit __P((struct proc *p));
- void execsigs __P((struct proc *p));
- void gsignal __P((int pgid, int sig));
- void pgsignal __P((struct pgrp *pgrp, int sig, int checkctty));
- void trapsignal __P((struct proc *p, int sig, unsigned code));
- void psignal __P((struct proc *p, int sig));
- int issig __P((struct proc *p));
- void psig __P((int sig));
- int coredump __P((struct proc *p));
-
- /*
- * Machine-dependent functions:
- */
- void sendsig __P((struct proc *p, thread_t thread, sig_t action, int sig, int code, int returnmask));
- #endif /* KERNEL */
- #endif /* !_SIGNALVAR_H_ */
-