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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [sys/] [signalvar.h] - Rev 232
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/* * Copyright (c) 1991, 1993 * The 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 8.6 (Berkeley) 2/19/95 * $Id: signalvar.h,v 1.2 2001-09-27 12:02:00 chris Exp $ */ #ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */ #define _SYS_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_sigreset; /* signals that reset when caught */ sigset_t ps_signodefer; /* signals not masked while handled */ sigset_t ps_oldmask; /* saved mask from before sigpause */ int ps_flags; /* signal flags, below */ struct sigaltstack ps_sigstk; /* sp & on stack state variable */ int ps_sig; /* for core dump/debugger XXX */ u_long ps_code; /* for core dump/debugger XXX */ sigset_t ps_usertramp; /* SunOS compat; libc sigtramp XXX */ }; /* signal flags */ #define SAS_OLDMASK 0x01 /* need to restore mask before pause */ #define SAS_ALTSTACK 0x02 /* have alternate signal stack */ /* additional signal action values, used only temporarily/internally */ #define SIG_CATCH ((__sighandler_t *)2) #define SIG_HOLD ((__sighandler_t *)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 issignal(). */ #define CURSIG(p) \ (((p)->p_siglist == 0 || \ (((p)->p_flag & P_TRACED) == 0 && \ ((p)->p_siglist & ~(p)->p_sigmask) == 0)) ? \ 0 : issignal(p)) /* * Clear a pending signal from a process. */ #define CLRSIG(p, sig) { (p)->p_siglist &= ~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 /* 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 static 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_STOP|SA_TTYSTOP, /* SIGTSTP */ SA_IGNORE|SA_CONT, /* SIGCONT */ SA_IGNORE, /* SIGCHLD */ SA_STOP|SA_TTYSTOP, /* SIGTTIN */ SA_STOP|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 contsigmask (sigmask(SIGCONT)) #define stopsigmask (sigmask(SIGSTOP) | sigmask(SIGTSTP) | \ sigmask(SIGTTIN) | sigmask(SIGTTOU)) #endif /* SIGPROP */ #define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP)) #ifdef KERNEL /* * Machine-independent functions: */ void execsigs __P((struct proc *p)); void gsignal __P((int pgid, int sig)); int issignal __P((struct proc *p)); void killproc __P((struct proc *p, char *why)); void pgsignal __P((struct pgrp *pgrp, int sig, int checkctty)); void postsig __P((int sig)); void psignal __P((struct proc *p, int sig)); void setsigvec __P((struct proc *p, int signum, struct sigaction *sa)); void sigexit __P((struct proc *p, int signum)); void siginit __P((struct proc *p)); void trapsignal __P((struct proc *p, int sig, u_long code)); /* * Machine-dependent functions: */ void sendsig __P((sig_t action, int sig, int returnmask, u_long code)); #endif /* KERNEL */ #endif /* !_SYS_SIGNALVAR_H_ */
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