73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
|
/* $NetBSD: __sigaction14_sigtramp.c,v 1.7 2008/04/28 20:22:57 martin Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2002 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Jason R. Thorpe.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
||
|
|
__RCSID("$NetBSD: __sigaction14_sigtramp.c,v 1.7 2008/04/28 20:22:57 martin Exp $");
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
#include "extern.h"
|
||
|
|
|
||
|
|
__weak_alias(__sigaction14, __libc_sigaction14)
|
||
|
|
|
||
|
|
int
|
||
|
|
__libc_sigaction14(int sig, const struct sigaction *act, struct sigaction *oact)
|
||
|
|
{
|
||
|
|
extern void __sigtramp_siginfo_2(void);
|
||
|
|
|
||
|
|
#ifdef __LIBC12_SOURCE__
|
||
|
|
/*
|
||
|
|
* We select the compatibility SIGCONTEXT trampoline if SA_SIGINFO
|
||
|
|
* is not set in the sigaction.
|
||
|
|
*/
|
||
|
|
if (act && (act->sa_flags & SA_SIGINFO) == 0) {
|
||
|
|
extern void __sigtramp_sigcontext_1(void);
|
||
|
|
int sav = errno;
|
||
|
|
int rv = __sigaction_sigtramp(sig, act, oact,
|
||
|
|
__sigtramp_sigcontext_1, 1);
|
||
|
|
/*
|
||
|
|
* EINVAL might indicate that trampoline version 1 is
|
||
|
|
* not supported by the kernel; fall back on native
|
||
|
|
* SIGINFO trampoline.
|
||
|
|
*/
|
||
|
|
if (rv >= 0 || errno != EINVAL)
|
||
|
|
return rv;
|
||
|
|
errno = sav;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return __sigaction_sigtramp(sig, act, oact, __sigtramp_siginfo_2, 2);
|
||
|
|
}
|