LCOM1920-T02G10

/*        $NetBSD: signal.h,v 1.67 2011/01/10 13:56:44 christos Exp $        */

/*

 * 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_

#include <sys/featuretest.h>

#include <sys/sigtypes.h>

#define _NSIG                64

#if defined(_NETBSD_SOURCE)

#define NSIG _NSIG

#endif /* _NETBSD_SOURCE */

#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        SIGUSR1                30        /* user defined signal 1 */

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

#define        SIGPWR                32        /* power fail/restart (not reset when caught) */

#if !defined(__minix)

#ifdef _KERNEL

#define        SIGRTMIN        33        /* Kernel only; not exposed to userland yet */

#define        SIGRTMAX        63        /* Kernel only; not exposed to userland yet */

#endif

#endif /* !defined(__minix) */

#ifndef _KERNEL

#include <sys/cdefs.h>

#endif

#define        SIG_DFL                ((void (*)(int))  0)

#define        SIG_IGN                ((void (*)(int))  1)

#define        SIG_ERR                ((void (*)(int)) -1)

#define        SIG_HOLD        ((void (*)(int))  3)

#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \

    defined(_NETBSD_SOURCE)

#ifdef _KERNEL

#define        sigaddset(s, n)                __sigaddset(s, n)

#define        sigdelset(s, n)                __sigdelset(s, n)

#define        sigismember(s, n)        __sigismember(s, n)

#define        sigemptyset(s)                __sigemptyset(s)

#define        sigfillset(s)                __sigfillset(s)

#define sigplusset(s, t)        __sigplusset(s, t)

#define sigminusset(s, t)        __sigminusset(s, t)

#endif /* _KERNEL */

#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \

    defined(_NETBSD_SOURCE)

#include <sys/siginfo.h>

#endif

#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \

    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)

#include <sys/ucontext.h>

#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */

/*

 * Signal vector "template" used in sigaction call.

 */

struct        sigaction {

        union {

                void (*_sa_handler)(int);

#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \

    defined(_NETBSD_SOURCE)

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

#endif

        } _sa_u;        /* signal handler */

        sigset_t sa_mask;                /* signal mask to apply */

        int        sa_flags;                /* see signal options below */

};

#define sa_handler _sa_u._sa_handler

#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \

    defined(_NETBSD_SOURCE)

#define sa_sigaction _sa_u._sa_sigaction

#endif

#include <machine/signal.h>        /* sigcontext; codes for SIGILL, SIGFPE */

#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \

    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)

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

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

#define SA_RESETHAND        0x0004        /* reset to SIG_DFL when taking signal */

#define SA_NODEFER        0x0010        /* don't mask the signal we're delivering */

#endif /* _XOPEN_SOURCE_EXTENDED || XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */

/* Only valid for SIGCHLD. */

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

#define SA_NOCLDWAIT        0x0020        /* do not generate zombies on unwaited child */

#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \

    defined(_NETBSD_SOURCE)

#if !defined(__minix)

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

#endif /* !defined(__minix) */

#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */

#if defined(_NETBSD_SOURCE)

#define        SA_NOKERNINFO        0x0080        /* siginfo does not print kernel info on tty */

#endif /*_NETBSD_SOURCE */

#ifdef _KERNEL

#define        SA_ALLBITS        0x00ff

#endif

/*

 * 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 */

#if defined(__minix)

#define SIG_INQUIRE    10        /* for internal use only */

#endif /* defined(__minix) */

#if defined(_NETBSD_SOURCE)

typedef        void (*sig_t)(int);        /* type of signal function */

#endif

#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \

    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)

/*

 * Flags used with stack_t/struct sigaltstack.

 */

#define SS_ONSTACK        0x0001        /* take signals on alternate stack */

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

#ifdef _KERNEL

#define        SS_ALLBITS        0x0005

#endif

#define        MINSIGSTKSZ        8192                        /* minimum allowable stack */

#define        SIGSTKSZ        (MINSIGSTKSZ + 32768)        /* recommended stack size */

#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */

#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \

    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)

/*

 * Structure used in sigstack call.

 */

struct        sigstack {

        void        *ss_sp;                        /* signal stack pointer */

        int        ss_onstack;                /* current status */

};

#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */

#if defined(_NETBSD_SOURCE) && !defined(_KERNEL)

/*

 * Macro for converting signal number to a mask suitable for

 * sigblock().

 */

#define sigmask(n)        __sigmask(n)

#define        BADSIG                SIG_ERR

#endif /* _NETBSD_SOURCE */

#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \

    defined(_NETBSD_SOURCE)

struct        sigevent {

        int        sigev_notify;

        int        sigev_signo;

        union sigval        sigev_value;

        void        (*sigev_notify_function)(union sigval);

        void /* pthread_attr_t */        *sigev_notify_attributes;

};

#define SIGEV_NONE        0

#define SIGEV_SIGNAL        1

#define SIGEV_THREAD        2

#if defined(_NETBSD_SOURCE)

#define SIGEV_SA        3

#endif

#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */

#endif        /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */

/*

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

 * defined by <sys/signal.h>.

 */

__BEGIN_DECLS

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

#if (_POSIX_C_SOURCE - 0) >= 200112L || defined(_NETBSD_SOURCE)

int        sigqueue(pid_t, int, const union sigval);

#endif

#if defined(_NETBSD_SOURCE)

int        sigqueueinfo(pid_t, const siginfo_t *);

#endif

__END_DECLS

#if defined(__minix) && defined(_NETBSD_SOURCE)

/* MINIX specific signals. These signals are not used by user proceses, 

 * but meant to inform system processes, like the PM, about system events.

 * The order here determines the order signals are processed by system

 * processes in user-space. Higher-priority signals should be first.

 */

/* Signals delivered by a signal manager. */

#define SIGSNDELAY      70    /* end of delay for signal delivery */

#define SIGS_FIRST       SIGHUP      /* first system signal */

#define SIGS_LAST        SIGSNDELAY   /* last system signal */

#define IS_SIGS(signo)    (signo>=SIGS_FIRST && signo<=SIGS_LAST)

/* Signals delivered by the kernel. */

#define SIGKMEM          71    /* kernel memory request pending */

#define SIGKMESS         72    /* new kernel message */

#define SIGKSIGSM        73    /* kernel signal pending for signal manager */

#define SIGKSIG          74    /* kernel signal pending */

#define SIGK_FIRST       SIGKMEM /* first kernel signal */

#define SIGK_LAST        SIGKSIG /* last kernel signal; _NSIG must cover it! */

#define IS_SIGK(signo)    (signo>=SIGK_FIRST && signo<=SIGK_LAST)

/* Termination signals for Minix system processes. */

#define SIGS_IS_LETHAL(sig) \

    (sig == SIGILL || sig == SIGBUS || sig == SIGFPE || sig == SIGSEGV \

    || sig == SIGEMT || sig == SIGABRT)

#define SIGS_IS_TERMINATION(sig) (SIGS_IS_LETHAL(sig) \

    || (sig == SIGKILL || sig == SIGPIPE))

#define SIGS_IS_STACKTRACE(sig) (SIGS_IS_LETHAL(sig) && sig != SIGABRT)

#endif /* defined(__minix) && defined(_NETBSD_SOURCE) */

#endif        /* !_SYS_SIGNAL_H_ */