2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #if defined(LIBC_SCCS) && !defined(lint)
33 static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93";
34 #endif /* LIBC_SCCS and not lint */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include "namespace.h"
39 #include <sys/param.h>
43 #include "un-namespace.h"
44 #include "libc_private.h"
47 sigvec(int signo, struct sigvec *sv, struct sigvec *osv)
49 struct sigaction sa, osa;
50 struct sigaction *sap, *osap;
54 sa.sa_handler = sv->sv_handler;
55 sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT;
56 sigemptyset(&sa.sa_mask);
57 sa.sa_mask.__bits[0] = sv->sv_mask;
61 osap = osv != NULL ? &osa : NULL;
62 ret = __libc_sigaction(signo, sap, osap);
63 if (ret == 0 && osv != NULL) {
64 osv->sv_handler = osa.sa_handler;
65 osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT;
66 osv->sv_mask = osa.sa_mask.__bits[0];
79 n = __libc_sigprocmask(SIG_SETMASK, &set, &oset);
82 return (oset.__bits[0]);
93 n = __libc_sigprocmask(SIG_BLOCK, &set, &oset);
96 return (oset.__bits[0]);
105 set.__bits[0] = mask;
106 return (__libc_sigsuspend(&set));
110 xsi_sigpause(int sig)
114 if (__libc_sigprocmask(SIG_BLOCK, NULL, &set) == -1)
116 if (sigdelset(&set, sig) == -1)
118 return (__libc_sigsuspend(&set));
127 if (sigaddset(&set, sig) == -1)
129 return (__libc_sigprocmask(SIG_BLOCK, &set, NULL));
137 bzero(&sa, sizeof(sa));
138 sa.sa_handler = SIG_IGN;
139 return (__libc_sigaction(sig, &sa, NULL));
148 if (sigaddset(&set, sig) == -1)
150 return (__libc_sigprocmask(SIG_UNBLOCK, &set, NULL));
154 (*sigset(int sig, void (*disp)(int)))(int)
157 struct sigaction sa, psa;
160 if (sigaddset(&set, sig) == -1)
162 if (__libc_sigprocmask(SIG_BLOCK, NULL, &pset) == -1)
164 if ((__sighandler_t *)disp == SIG_HOLD) {
165 if (__libc_sigprocmask(SIG_BLOCK, &set, &pset) == -1)
167 if (sigismember(&pset, sig))
170 if (__libc_sigaction(sig, NULL, &psa) == -1)
172 return (psa.sa_handler);
175 if (__libc_sigprocmask(SIG_UNBLOCK, &set, &pset) == -1)
179 bzero(&sa, sizeof(sa));
180 sa.sa_handler = disp;
181 if (__libc_sigaction(sig, &sa, &psa) == -1)
183 if (sigismember(&pset, sig))
186 return (psa.sa_handler);