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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
+ * $Id$
+ */
+
+#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_ */