235 lines
8.1 KiB
C
235 lines
8.1 KiB
C
/* $NetBSD: signalvar.h,v 1.30 2001/06/06 21:46:59 mrg Exp $ */
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/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)signalvar.h 8.6 (Berkeley) 2/19/95
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*/
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#ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */
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#define _SYS_SIGNALVAR_H_
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/*
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* Kernel signal definitions and data structures,
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* not exported to user programs.
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*/
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/*
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* Process signal actions, possibly shared between threads.
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*/
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struct sigacts {
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struct sigaction sa_sigact[NSIG]; /* disposition of signals */
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int sa_refcnt; /* reference count */
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};
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/*
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* Process signal state.
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*/
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struct sigctx {
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/* This needs to be zeroed on fork */
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sigset_t ps_siglist; /* Signals arrived but not delivered. */
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char ps_sigcheck; /* May have deliverable signals. */
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/* This should be copied on fork */
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#define ps_startcopy ps_sigstk
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struct sigaltstack ps_sigstk; /* sp & on stack state variable */
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sigset_t ps_oldmask; /* saved mask from before sigpause */
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int ps_flags; /* signal flags, below */
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int ps_sig; /* for core dump/debugger XXX */
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long ps_code; /* for core dump/debugger XXX */
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void *ps_sigcode; /* address of signal trampoline */
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sigset_t ps_sigmask; /* Current signal mask. */
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sigset_t ps_sigignore; /* Signals being ignored. */
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sigset_t ps_sigcatch; /* Signals being caught by user. */
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};
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/* signal flags */
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#define SAS_OLDMASK 0x01 /* need to restore mask before pause */
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/* additional signal action values, used only temporarily/internally */
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#define SIG_CATCH (void (*) __P((int)))2
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#define SIG_HOLD (void (*) __P((int)))3
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/*
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* get signal action for process and signal; currently only for current process
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*/
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#define SIGACTION(p, sig) (p->p_sigacts->sa_sigact[(sig)])
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#define SIGACTION_PS(ps, sig) (ps->sa_sigact[(sig)])
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/*
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* Mark that signals for a process need to be checked.
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*/
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#define CHECKSIGS(p) \
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do { \
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(p)->p_sigctx.ps_sigcheck = 1; \
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signotify(p); \
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} while (/* CONSTCOND */ 0)
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/*
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* Determine signal that should be delivered to process p, the current
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* process, 0 if none. If there is a pending stop signal with default
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* action, the process stops in issignal().
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*/
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#define CURSIG(p) (p->p_sigctx.ps_sigcheck ? issignal(p) : 0)
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/*
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* Clear a pending signal from a process.
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*/
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#define CLRSIG(p, sig) sigdelset(&p->p_sigctx.ps_siglist, sig)
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/*
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* Signal properties and actions.
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* The array below categorizes the signals and their default actions
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* according to the following properties:
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*/
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#define SA_KILL 0x01 /* terminates process by default */
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#define SA_CORE 0x02 /* ditto and coredumps */
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#define SA_STOP 0x04 /* suspend process */
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#define SA_TTYSTOP 0x08 /* ditto, from tty */
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#define SA_IGNORE 0x10 /* ignore by default */
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#define SA_CONT 0x20 /* continue if suspended */
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#define SA_CANTMASK 0x40 /* non-maskable, catchable */
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#define SA_NORESET 0x80 /* not reset when caught */
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#ifdef SIGPROP
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const int sigprop[NSIG] = {
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0, /* unused */
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SA_KILL, /* SIGHUP */
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SA_KILL, /* SIGINT */
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SA_KILL|SA_CORE, /* SIGQUIT */
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SA_KILL|SA_CORE|SA_NORESET, /* SIGILL */
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SA_KILL|SA_CORE|SA_NORESET, /* SIGTRAP */
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SA_KILL|SA_CORE, /* SIGABRT */
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SA_KILL|SA_CORE, /* SIGEMT */
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SA_KILL|SA_CORE, /* SIGFPE */
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SA_KILL|SA_CANTMASK, /* SIGKILL */
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SA_KILL|SA_CORE, /* SIGBUS */
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SA_KILL|SA_CORE, /* SIGSEGV */
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SA_KILL|SA_CORE, /* SIGSYS */
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SA_KILL, /* SIGPIPE */
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SA_KILL, /* SIGALRM */
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SA_KILL, /* SIGTERM */
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SA_IGNORE, /* SIGURG */
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SA_STOP|SA_CANTMASK, /* SIGSTOP */
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SA_STOP|SA_TTYSTOP, /* SIGTSTP */
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SA_IGNORE|SA_CONT, /* SIGCONT */
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SA_IGNORE, /* SIGCHLD */
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SA_STOP|SA_TTYSTOP, /* SIGTTIN */
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SA_STOP|SA_TTYSTOP, /* SIGTTOU */
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SA_IGNORE, /* SIGIO */
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SA_KILL, /* SIGXCPU */
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SA_KILL, /* SIGXFSZ */
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SA_KILL, /* SIGVTALRM */
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SA_KILL, /* SIGPROF */
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SA_IGNORE, /* SIGWINCH */
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SA_IGNORE, /* SIGINFO */
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SA_KILL, /* SIGUSR1 */
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SA_KILL, /* SIGUSR2 */
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SA_IGNORE|SA_NORESET, /* SIGPWR */
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};
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#endif /* SIGPROP */
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#ifdef _KERNEL
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extern sigset_t contsigmask, stopsigmask, sigcantmask;
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/*
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* Set if we need to short-cut coredump() with the 32-bit version
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* on a 64-bit platform.
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*/
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struct vnode;
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extern int (*coredump32_hook)(struct proc *p, struct vnode *vp);
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/*
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* Machine-independent functions:
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*/
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int coredump __P((struct proc *p));
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void execsigs __P((struct proc *p));
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void gsignal __P((int pgid, int sig));
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int issignal __P((struct proc *p));
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void pgsignal __P((struct pgrp *pgrp, int sig, int checkctty));
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void postsig __P((int sig));
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void psignal1 __P((struct proc *p, int sig, int dolock));
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#define psignal(p, sig) psignal1((p), (sig), 1)
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#define sched_psignal(p, sig) psignal1((p), (sig), 0)
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void siginit __P((struct proc *p));
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void trapsignal __P((struct proc *p, int sig, u_long code));
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void sigexit __P((struct proc *, int));
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void setsigvec __P((struct proc *, int, struct sigaction *));
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int killpg1 __P((struct proc *, int, int, int));
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int sigaction1 __P((struct proc *p, int signum, \
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const struct sigaction *nsa, struct sigaction *osa));
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int sigprocmask1 __P((struct proc *p, int how, \
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const sigset_t *nss, sigset_t *oss));
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void sigpending1 __P((struct proc *p, sigset_t *ss));
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int sigsuspend1 __P((struct proc *p, const sigset_t *ss));
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int sigaltstack1 __P((struct proc *p, \
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const struct sigaltstack *nss, struct sigaltstack *oss));
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int sigismasked __P((struct proc *, int));
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void signal_init __P((void));
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void sigactsinit __P((struct proc *, struct proc *, int));
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void sigactsunshare __P((struct proc *));
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void sigactsfree __P((struct proc *));
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/*
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* Machine-dependent functions:
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*/
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void sendsig __P((sig_t action, int sig, sigset_t *returnmask, u_long code));
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struct core;
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struct core32;
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struct vnode;
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struct ucred;
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int cpu_coredump __P((struct proc *, struct vnode *, struct ucred *,
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struct core *));
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int cpu_coredump32 __P((struct proc *, struct vnode *, struct ucred *,
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struct core32 *));
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/*
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* Compatibility functions. See compat/common/kern_sig_13.c.
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*/
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void native_sigset13_to_sigset __P((const sigset13_t *, sigset_t *));
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void native_sigset_to_sigset13 __P((const sigset_t *, sigset13_t *));
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void native_sigaction13_to_sigaction __P((const struct sigaction13 *,
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struct sigaction *));
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void native_sigaction_to_sigaction13 __P((const struct sigaction *,
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struct sigaction13 *));
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void native_sigaltstack13_to_sigaltstack __P((const struct sigaltstack13 *,
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struct sigaltstack *));
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void native_sigaltstack_to_sigaltstack13 __P((const struct sigaltstack *,
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struct sigaltstack13 *));
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#endif /* _KERNEL */
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#endif /* !_SYS_SIGNALVAR_H_ */
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