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553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
342 lines
12 KiB
C
Vendored
342 lines
12 KiB
C
Vendored
/* $NetBSD: signal.h,v 1.75.4.2 2024/10/14 17:44:57 martin Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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. 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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* @(#)signal.h 8.4 (Berkeley) 5/4/95
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*/
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#ifndef _SYS_SIGNAL_H_
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#define _SYS_SIGNAL_H_
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#include <sys/featuretest.h>
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#include <sys/sigtypes.h>
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#define _NSIG 64
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#if defined(_NETBSD_SOURCE)
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#define NSIG _NSIG
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#endif /* _NETBSD_SOURCE */
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#define SIGHUP 1 /* hangup */
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#define SIGINT 2 /* interrupt */
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#define SIGQUIT 3 /* quit */
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#define SIGILL 4 /* illegal instruction (not reset when caught) */
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#define SIGTRAP 5 /* trace trap (not reset when caught) */
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#define SIGABRT 6 /* abort() */
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#define SIGIOT SIGABRT /* compatibility */
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#define SIGEMT 7 /* EMT instruction */
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#define SIGFPE 8 /* floating point exception */
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#define SIGKILL 9 /* kill (cannot be caught or ignored) */
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#define SIGBUS 10 /* bus error */
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#define SIGSEGV 11 /* segmentation violation */
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#define SIGSYS 12 /* bad argument to system call */
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#define SIGPIPE 13 /* write on a pipe with no one to read it */
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#define SIGALRM 14 /* alarm clock */
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#define SIGTERM 15 /* software termination signal from kill */
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#define SIGURG 16 /* urgent condition on IO channel */
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#define SIGSTOP 17 /* sendable stop signal not from tty */
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#define SIGTSTP 18 /* stop signal from tty */
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#define SIGCONT 19 /* continue a stopped process */
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#define SIGCHLD 20 /* to parent on child stop or exit */
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#define SIGTTIN 21 /* to readers pgrp upon background tty read */
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#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
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#define SIGIO 23 /* input/output possible signal */
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#define SIGXCPU 24 /* exceeded CPU time limit */
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#define SIGXFSZ 25 /* exceeded file size limit */
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#define SIGVTALRM 26 /* virtual time alarm */
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#define SIGPROF 27 /* profiling time alarm */
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#define SIGWINCH 28 /* window size changes */
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#define SIGINFO 29 /* information request */
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#define SIGUSR1 30 /* user defined signal 1 */
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#define SIGUSR2 31 /* user defined signal 2 */
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#define SIGPWR 32 /* power fail/restart (not reset when caught) */
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#define SIGRTMIN 33
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#define SIGRTMAX 63
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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#endif
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#define SIG_DFL ((void (*)(int)) 0)
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#define SIG_IGN ((void (*)(int)) 1)
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#define SIG_ERR ((void (*)(int)) -1)
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#define SIG_HOLD ((void (*)(int)) 3)
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
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defined(_NETBSD_SOURCE)
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#ifdef _KERNEL
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#define sigaddset(s, n) __sigaddset(s, n)
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#define sigdelset(s, n) __sigdelset(s, n)
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#define sigismember(s, n) __sigismember(s, n)
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#define sigemptyset(s) __sigemptyset(s)
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#define sigfillset(s) __sigfillset(s)
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#define sigplusset(s, t) __sigplusset(s, t)
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#define sigminusset(s, t) __sigminusset(s, t)
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#endif /* _KERNEL */
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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#include <sys/siginfo.h>
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#endif
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#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
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#include <sys/ucontext.h>
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#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
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/*
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* Signal vector "template" used in sigaction call.
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*/
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struct sigaction {
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union {
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void (*_sa_handler)(int);
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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void (*_sa_sigaction)(int, siginfo_t *, void *);
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#endif
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} _sa_u; /* signal handler */
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sigset_t sa_mask; /* signal mask to apply */
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int sa_flags; /* see signal options below */
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};
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#define sa_handler _sa_u._sa_handler
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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#define sa_sigaction _sa_u._sa_sigaction
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#endif
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/*
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* Signal return trampoline versioning:
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*
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* In historical BSD, the kernel provided the signal trampoline, copying
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* it out to the process's stack. In NetBSD 2.0, the signal trampoline
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* was moved into libc, and versioned in order to support the historical
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* BSD "sigcontext" style of handler in addition to the modern "siginfo"
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* style of handler. The trampoline and its ABI version are registered
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* with the kernel along with the handlers.
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*
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* The versioning follows this general pattern:
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*
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* 0 Historical BSD style, trampoline provided by the kernel. This is
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* now used only by COMPAT_* modules.
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*
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* 1 Legacy BSD "sigcontext" trampoline. This style is deprecated and
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* no longer documented. However, on platforms that have a legacy
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* "sigcontext" structure, it is still possible to register a handler
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* that uses this trampoline.
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*
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* 2 Modern "siginfo" trampoline. This style is used if a handler
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* explicitly requests "siginfo", or if the deprecation of "sigcontext"
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* style handlers pre-dates support for the platform.
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*
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* Some architectures have, in the past, needed to version the "sigcontext"
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* trampoline; an override mechanism is provided for this purpose. No more
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* changes to the old "sigcontext" trampoline ABI will ever be performed,
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* and support for it should not be included when adding support for new
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* architectures. Those architectures that support the "sigcontext"
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* trampoline must define __HAVE_STRUCT_SIGCONTEXT in <machine/signal.h>.
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* If a 64-bit architecture needs to support "sigcontext" trampolines only
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* for 32-bit compatibility, then __HAVE_STRUCT_SIGCONTEXT can be conditional
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* on _KERNEL.
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*
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* If an architecture defines a sigcontext structure in <machine/signal.h>,
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* it should be visible only for _KERNEL and _LIBC.
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*
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* In the unlikely event that an an architecture needs to version
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* the "siginfo" trampoline, it can achieve this by overriding the
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* various __SIGTRAMP_SIGINFO_VERSION-related constants.
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*/
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#include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
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#define __SIGTRAMP_SIGCODE_VERSION 0
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#define __SIGTRAMP_SIGCONTEXT_VERSION_MIN 1
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#ifndef __SIGTRAMP_SIGCONTEXT_VERSION_MAX
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#define __SIGTRAMP_SIGCONTEXT_VERSION_MAX 1
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#endif
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#ifndef __SIGTRAMP_SIGCONTEXT_VERSION
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#define __SIGTRAMP_SIGCONTEXT_VERSION 1
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#endif
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#if __SIGTRAMP_SIGCONTEXT_VERSION_MAX < __SIGTRAMP_SIGCONTEXT_VERSION_MIN
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#error invalid __SIGTRAMP_SIGCONTEXT_VERSION_MAX
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#endif
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#ifndef __SIGTRAMP_SIGINFO_VERSION_MIN
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#define __SIGTRAMP_SIGINFO_VERSION_MIN 2
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#endif
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#ifndef __SIGTRAMP_SIGINFO_VERSION_MAX
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#define __SIGTRAMP_SIGINFO_VERSION_MAX 2
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#endif
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#ifndef __SIGTRAMP_SIGINFO_VERSION
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#define __SIGTRAMP_SIGINFO_VERSION 2
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#endif
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#if __SIGTRAMP_SIGINFO_VERSION_MAX < __SIGTRAMP_SIGINFO_VERSION_MIN
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#error invalid __SIGTRAMP_SIGINFO_VERSION_MAX
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#endif
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#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
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defined(_NETBSD_SOURCE)
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#define SA_ONSTACK 0x0001 /* take signal on signal stack */
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#define SA_RESTART 0x0002 /* restart system call on signal return */
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#define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */
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#define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */
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#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE */
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/* Only valid for SIGCHLD. */
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#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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#define SA_NOCLDWAIT 0x0020 /* do not generate zombies on unwaited child */
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#define SA_SIGINFO 0x0040 /* take sa_sigaction handler */
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#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */
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#if defined(_NETBSD_SOURCE)
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#define SA_NOKERNINFO 0x0080 /* siginfo does not print kernel info on tty */
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#endif /*_NETBSD_SOURCE */
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#ifdef _KERNEL
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#define SA_ALLBITS 0x00ff
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#endif
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/*
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* Flags for sigprocmask():
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*/
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#define SIG_BLOCK 1 /* block specified signal set */
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#define SIG_UNBLOCK 2 /* unblock specified signal set */
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#define SIG_SETMASK 3 /* set specified signal set */
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#if defined(_NETBSD_SOURCE)
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typedef void (*sig_t)(int); /* type of signal function */
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#define SS_INIT /* Initializer for stack_t */ \
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((stack_t) { .ss_sp = NULL, .ss_flags = SS_DISABLE, .ss_size = 0 })
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#endif
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#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
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defined(_NETBSD_SOURCE)
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/*
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* Flags used with stack_t/struct sigaltstack.
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*/
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#define SS_ONSTACK 0x0001 /* take signals on alternate stack */
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#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
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#ifdef _KERNEL
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#define SS_ALLBITS 0x0005
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#endif
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#define MINSIGSTKSZ 8192 /* minimum allowable stack */
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#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
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#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500
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* || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE
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*/
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#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
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defined(_NETBSD_SOURCE)
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/*
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* Structure used in sigstack call.
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*/
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struct sigstack {
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void *ss_sp; /* signal stack pointer */
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int ss_onstack; /* current status */
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};
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#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500
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* || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE
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*/
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#if defined(_NETBSD_SOURCE) && !defined(_KERNEL)
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/*
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* Macro for converting signal number to a mask suitable for
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* sigblock().
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*/
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#define sigmask(n) __sigmask(n)
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#define BADSIG SIG_ERR
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#endif /* _NETBSD_SOURCE */
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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struct sigevent {
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int sigev_notify;
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int sigev_signo;
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union sigval sigev_value;
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void (*sigev_notify_function)(union sigval);
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void /* pthread_attr_t */ *sigev_notify_attributes;
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};
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#define SIGEV_NONE 0
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#define SIGEV_SIGNAL 1
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#define SIGEV_THREAD 2
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#if defined(_NETBSD_SOURCE)
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#define SIGEV_SA 3
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#endif
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#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */
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#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
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/*
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* For historical reasons; programs expect signal's return value to be
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* defined by <sys/signal.h>.
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*/
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__BEGIN_DECLS
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void (*signal(int, void (*)(int)))(int);
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#if (_POSIX_C_SOURCE - 0) >= 200112L || defined(_NETBSD_SOURCE)
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int sigqueue(pid_t, int, const union sigval);
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#endif
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#if defined(_NETBSD_SOURCE) || \
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(!defined (_XOPEN_SOURCE) && defined(_XOPEN_VERSION) && \
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(_XOPEN_VERSION - 0) >= 4) || \
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(defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE - 0) <= 600)
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/*
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* bsd_signal() was added to the standards in POSIX issue 4 (SusV4)
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* (release 2 of SusV4) and then removed in POSIX issue 7 (2008),
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* after being marked obsolete in POSIX issue 6 (2001). It was
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* always an X/Open extension function (though was moved to the
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* base POSIX spec in issue 5, but still as an extension).
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*/
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void (*bsd_signal(int, void (*)(int)))(int);
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#endif
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#if defined(_NETBSD_SOURCE)
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int sigqueueinfo(pid_t, const siginfo_t *);
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#endif
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__END_DECLS
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#endif /* !_SYS_SIGNAL_H_ */ |