1 /* $OpenBSD: sigwait.c,v 1.1 2019/01/12 00:16:03 jca Exp $ */
2 /*
3 * Copyright (c) 2005 Ted Unangst <tedu@openbsd.org>
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 /*
19 * signals
20 */
21
22 #include <signal.h>
23 #include <errno.h>
24
25 #include <pthread.h>
26
27 #include "thread/rthread.h"
28 #include "cancel.h" /* in libc/include */
29
30 int
sigwait(const sigset_t * set,int * sig)31 sigwait(const sigset_t *set, int *sig)
32 {
33 sigset_t s = *set;
34 int ret;
35
36 sigdelset(&s, SIGTHR);
37 do {
38 ENTER_CANCEL_POINT(1);
39 ret = __thrsigdivert(s, NULL, NULL);
40 LEAVE_CANCEL_POINT(ret == -1);
41 } while (ret == -1 && errno == EINTR);
42 if (ret == -1)
43 return (errno);
44 *sig = ret;
45 return (0);
46 }
47
48 #if 0 /* need kernel to fill in more siginfo_t bits first */
49 int
50 sigwaitinfo(const sigset_t *set, siginfo_t *info)
51 {
52 sigset_t s = *set;
53 int ret;
54
55 sigdelset(&s, SIGTHR);
56 ENTER_CANCEL_POINT(1);
57 ret = __thrsigdivert(s, info, NULL);
58 LEAVE_CANCEL_POINT(ret == -1);
59 return (ret);
60 }
61
62 int
63 sigtimedwait(const sigset_t *set, siginfo_t *info,
64 const struct timespec *timeout)
65 {
66 sigset_t s = *set;
67 int ret;
68
69 sigdelset(&s, SIGTHR);
70 ENTER_CANCEL_POINT(1);
71 ret = __thrsigdivert(s, info, timeout);
72 LEAVE_CANCEL_POINT(ret == -1);
73 return (ret);
74 }
75 #endif
76