2 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include "namespace.h"
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/signalvar.h>
40 #include "un-namespace.h"
41 #include "thr_private.h"
43 __weak_reference(_pthread_sigmask, pthread_sigmask);
46 _pthread_sigmask(int how, const sigset_t *set, sigset_t *oset)
48 struct pthread *curthread = _get_curthread();
49 sigset_t oldset, newset;
52 if (curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) {
53 ret = __sys_sigprocmask(how, set, oset);
56 /* Get a fresh copy */
57 __sys_sigprocmask(SIG_SETMASK, NULL, &curthread->sigmask);
64 THR_SCHED_LOCK(curthread, curthread);
68 /* Return the current mask: */
69 oldset = curthread->sigmask;
71 /* Check if a new signal set was provided by the caller: */
73 /* Process according to what to do: */
77 /* Add signals to the existing mask: */
78 SIGSETOR(curthread->sigmask, newset);
81 /* Unblock signals: */
83 /* Clear signals from the existing mask: */
84 SIGSETNAND(curthread->sigmask, newset);
87 /* Set the signal process mask: */
89 /* Set the new mask: */
90 curthread->sigmask = newset;
93 /* Trap invalid actions: */
95 /* Return an invalid argument: */
99 SIG_CANTMASK(curthread->sigmask);
100 THR_SCHED_UNLOCK(curthread, curthread);
103 * Run down any pending signals:
106 _thr_sig_check_pending(curthread);
108 THR_SCHED_UNLOCK(curthread, curthread);
110 if (ret == 0 && oset != NULL)