1*0a6a1f1dSLionel Sambuc /* $NetBSD: __sigaction14_sigtramp.c,v 1.1 2014/09/19 17:36:25 matt Exp $ */
2*0a6a1f1dSLionel Sambuc
3*0a6a1f1dSLionel Sambuc /*-
4*0a6a1f1dSLionel Sambuc * Copyright (c) 2002 The NetBSD Foundation, Inc.
5*0a6a1f1dSLionel Sambuc * All rights reserved.
6*0a6a1f1dSLionel Sambuc *
7*0a6a1f1dSLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation
8*0a6a1f1dSLionel Sambuc * by Jason R. Thorpe.
9*0a6a1f1dSLionel Sambuc *
10*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
11*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
12*0a6a1f1dSLionel Sambuc * are met:
13*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
14*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
15*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
18*0a6a1f1dSLionel Sambuc *
19*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*0a6a1f1dSLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*0a6a1f1dSLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*0a6a1f1dSLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*0a6a1f1dSLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*0a6a1f1dSLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*0a6a1f1dSLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*0a6a1f1dSLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*0a6a1f1dSLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*0a6a1f1dSLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*0a6a1f1dSLionel Sambuc * POSSIBILITY OF SUCH DAMAGE.
30*0a6a1f1dSLionel Sambuc */
31*0a6a1f1dSLionel Sambuc
32*0a6a1f1dSLionel Sambuc #include <sys/cdefs.h>
33*0a6a1f1dSLionel Sambuc #if defined(LIBC_SCCS) && !defined(lint)
34*0a6a1f1dSLionel Sambuc __RCSID("$NetBSD: __sigaction14_sigtramp.c,v 1.1 2014/09/19 17:36:25 matt Exp $");
35*0a6a1f1dSLionel Sambuc #endif /* LIBC_SCCS and not lint */
36*0a6a1f1dSLionel Sambuc
37*0a6a1f1dSLionel Sambuc #include <sys/types.h>
38*0a6a1f1dSLionel Sambuc #include <stddef.h>
39*0a6a1f1dSLionel Sambuc #include <signal.h>
40*0a6a1f1dSLionel Sambuc #include <errno.h>
41*0a6a1f1dSLionel Sambuc
42*0a6a1f1dSLionel Sambuc #include "extern.h"
43*0a6a1f1dSLionel Sambuc
__weak_alias(__sigaction14,__libc_sigaction14)44*0a6a1f1dSLionel Sambuc __weak_alias(__sigaction14, __libc_sigaction14)
45*0a6a1f1dSLionel Sambuc
46*0a6a1f1dSLionel Sambuc int
47*0a6a1f1dSLionel Sambuc __libc_sigaction14(int sig, const struct sigaction *act, struct sigaction *oact)
48*0a6a1f1dSLionel Sambuc {
49*0a6a1f1dSLionel Sambuc extern const int __sigtramp_siginfo_2[];
50*0a6a1f1dSLionel Sambuc
51*0a6a1f1dSLionel Sambuc /*
52*0a6a1f1dSLionel Sambuc * If no sigaction, use the "default" trampoline since it won't
53*0a6a1f1dSLionel Sambuc * be used.
54*0a6a1f1dSLionel Sambuc */
55*0a6a1f1dSLionel Sambuc if (act == NULL)
56*0a6a1f1dSLionel Sambuc return __sigaction_sigtramp(sig, act, oact, NULL, 0);
57*0a6a1f1dSLionel Sambuc
58*0a6a1f1dSLionel Sambuc #ifdef __LIBC12_SOURCE__
59*0a6a1f1dSLionel Sambuc /*
60*0a6a1f1dSLionel Sambuc * We select the non-SA_SIGINFO trampoline if SA_SIGINFO is not
61*0a6a1f1dSLionel Sambuc * set in the sigaction.
62*0a6a1f1dSLionel Sambuc */
63*0a6a1f1dSLionel Sambuc if ((act->sa_flags & SA_SIGINFO) == 0) {
64*0a6a1f1dSLionel Sambuc extern const int __sigtramp_sigcontext_1[];
65*0a6a1f1dSLionel Sambuc int sav = errno;
66*0a6a1f1dSLionel Sambuc int rv = __sigaction_sigtramp(sig, act, oact,
67*0a6a1f1dSLionel Sambuc __sigtramp_sigcontext_1, 1);
68*0a6a1f1dSLionel Sambuc if (rv >= 0 || errno != EINVAL)
69*0a6a1f1dSLionel Sambuc return rv;
70*0a6a1f1dSLionel Sambuc errno = sav;
71*0a6a1f1dSLionel Sambuc }
72*0a6a1f1dSLionel Sambuc #endif
73*0a6a1f1dSLionel Sambuc
74*0a6a1f1dSLionel Sambuc /*
75*0a6a1f1dSLionel Sambuc * If SA_SIGINFO was specified or the compatibility trampolines
76*0a6a1f1dSLionel Sambuc * can't be used, use the siginfo trampoline.
77*0a6a1f1dSLionel Sambuc */
78*0a6a1f1dSLionel Sambuc return __sigaction_sigtramp(sig, act, oact, __sigtramp_siginfo_2, 2);
79*0a6a1f1dSLionel Sambuc }
80