Colony » Colony Scout » Colony Scout OS

/*

 * 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. 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        8.4 (Berkeley) 5/4/95

 */

#ifndef        _SYS_SIGNAL_H_

#define        _SYS_SIGNAL_H_

#define NSIG        32                /* counting 0; could be 33 (mask is 1-32) */

#include <machine/signal.h>        /* sigcontext */

#define        SIGHUP        1        /* hangup */

#define        SIGINT        2        /* interrupt */

#define        SIGQUIT        3        /* quit */

#define        SIGILL        4        /* illegal instruction (not reset when caught) */

#define        SIGTRAP        5        /* trace trap (not reset when caught) */

#define        SIGABRT        6        /* abort() */

#define        SIGIOT        SIGABRT        /* compatibility */

#define        SIGEMT        7        /* EMT instruction */

#define        SIGFPE        8        /* floating point exception */

#define        SIGKILL        9        /* kill (cannot be caught or ignored) */

#define        SIGBUS        10        /* bus error */

#define        SIGSEGV        11        /* segmentation violation */

#define        SIGSYS        12        /* bad argument to system call */

#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 */

#define        SIGURG        16        /* urgent condition on IO channel */

#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&LTOSTOP) */

#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 */

#define SIGPWR        SIGINFO

#define SIGUSR1 30        /* user defined signal 1 */

#define SIGUSR2 31        /* user defined signal 2 */

#ifndef KERNEL

/*

 * 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)

typedef unsigned int sigset_t;

union sigval {

        int        sival_int;

        void        *sival_ptr;

};

struct siginfo {

        int        si_signo;        /* redundant signal number */

        int        si_code;        /* facility that raised this signal */

        union sigval si_value;        /* value that was queued with signal */

};

typedef struct siginfo siginfo_t;

/*

 * Signal vector "template" used in sigaction call.

 */

struct sigaction {

        union {

                void (*__sa_handler) (int);

                void (*__sa_sigaction) (int, siginfo_t *, void *);

        } __sigaction_u;

        sigset_t sa_mask;

        int sa_flags;

};

#define sa_handler      __sigaction_u.__sa_handler

#define sa_sigaction    __sigaction_u.__sa_sigaction

/* sa_flags bits */

#define SA_ONSTACK        0x0001        /* take signal on signal stack */

#define SA_RESTART        0x0002        /* restart system on signal return */

#define        SA_DISABLE        0x0004        /* disable taking signals on alternate stack */

#define SA_NOCLDSTOP        0x0008        /* do not generate SIGCHLD on child stop */

#define SA_SIGINFO        0x0040        /* take sa_sigaction handler */

/*

 * 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 */

#include <sys/cdefs.h>

typedef        void (*sig_t)(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;                /* SA_DISABLE and/or SA_ONSTACK */

};

#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)(int);        /* 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_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

#ifdef _REENTRANT

extern mutex_t __sig_lock;

#define SIGNAL_LOCK()        mutex_lock(&__sig_lock)

#define SIGNAL_UNLOCK()        mutex_unlock(&__sig_lock)

#else

#define SIGNAL_LOCK()

#define SIGNAL_UNLOCK()

#endif

extern struct sigaction __sig_act[NSIG];

extern sigset_t __sig_mask;

extern sigset_t __sig_pending;

/*

 * For historical reasons; programs expect signal's return value to be

 * defined by <sys/signal.h>.

 */

__BEGIN_DECLS

void        (*signal(int, void (*)(int)))(int);

int        __sig_flush(void);

__END_DECLS

#endif /* !KERNEL */

#endif        /* !_SYS_SIGNAL_H_ */