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Define stack_t in sys/_sigaltstack.h
The sigaltstack(2) definition needs this type so make it available without all of sys/signal.h. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D44383
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sys/sys/_sigaltstack.h
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sys/sys/_sigaltstack.h
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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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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#ifndef _SYS__SIGALTSTACK_H_
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#define _SYS__SIGALTSTACK_H_
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#include <sys/_types.h>
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#if __XSI_VISIBLE
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#if __BSD_VISIBLE
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#define __stack_t sigaltstack
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#endif
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typedef struct __stack_t stack_t;
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#define SS_ONSTACK 0x0001 /* take signal on alternate stack */
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#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
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#define MINSIGSTKSZ __MINSIGSTKSZ /* minimum stack size */
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#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
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#endif
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/*
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* Structure used in sigaltstack call. Its definition is always
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* needed for __ucontext. If __BSD_VISIBLE is defined, the structure
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* tag is actually sigaltstack.
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*/
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struct __stack_t {
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void *ss_sp; /* signal stack base */
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__size_t ss_size; /* signal stack length */
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int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */
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};
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#endif /* !_SYS__SIGALTSTACK_H_ */
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@ -40,6 +40,7 @@
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#include <sys/cdefs.h>
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#include <sys/_types.h>
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#include <sys/_sigset.h>
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#include <sys/_sigaltstack.h>
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#include <machine/_limits.h> /* __MINSIGSTKSZ */
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#include <machine/signal.h> /* sig_atomic_t; trap codes; sigcontext */
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@ -426,29 +427,6 @@ typedef __sighandler_t *sig_t; /* type of pointer to a signal function */
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typedef void __siginfohandler_t(int, struct __siginfo *, void *);
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#endif
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#if __XSI_VISIBLE
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#if __BSD_VISIBLE
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#define __stack_t sigaltstack
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#endif
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typedef struct __stack_t stack_t;
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#define SS_ONSTACK 0x0001 /* take signal on alternate stack */
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#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
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#define MINSIGSTKSZ __MINSIGSTKSZ /* minimum stack size */
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#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
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#endif
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/*
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* Structure used in sigaltstack call. Its definition is always
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* needed for __ucontext. If __BSD_VISIBLE is defined, the structure
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* tag is actually sigaltstack.
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*/
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struct __stack_t {
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void *ss_sp; /* signal stack base */
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__size_t ss_size; /* signal stack length */
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int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */
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};
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#if __BSD_VISIBLE
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/*
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* 4.3 compatibility:
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