2 * Copyright (c) 1995 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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include "pthread_private.h"
40 sigprocmask(int how, const sigset_t * set, sigset_t * oset)
45 /* Check if the existing signal process mask is to be returned: */
47 /* Return the current mask: */
48 *oset = _thread_run->sigmask;
50 /* Check if a new signal set was provided by the caller: */
52 /* Block signals while the signal mask is changed: */
53 _thread_kern_sig_block(&status);
55 /* Process according to what to do: */
59 /* Add signals to the existing mask: */
60 _thread_run->sigmask |= *set;
63 /* Unblock signals: */
65 /* Clear signals from the existing mask: */
66 _thread_run->sigmask &= ~(*set);
69 /* Set the signal process mask: */
71 /* Set the new mask: */
72 _thread_run->sigmask = *set;
75 /* Trap invalid actions: */
77 /* Return an invalid argument: */
84 * Schedule the next thread in case there are signals that
85 * now need to be acted on:
87 _thread_kern_sched(NULL);
89 /* Return the completion status: */