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37ba7d66 | 1 | /* Copyright (C) 1991, 1996, 1997, 1998, 2002 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
478b92f0 | 13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
28f540f4 | 18 | |
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19 | #include <errno.h> |
20 | #include <signal.h> | |
21 | #include <stddef.h> | |
22 | #include <unistd.h> | |
23 | ||
24 | ||
25 | /* Change the set of blocked signals to SET, | |
26 | wait until a signal arrives, and restore the set of blocked signals. */ | |
27 | int | |
a9ddb793 | 28 | __sigsuspend (set) |
c4029823 | 29 | const sigset_t *set; |
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30 | { |
31 | sigset_t oset; | |
32 | int save; | |
33 | ||
34 | if (set == NULL) | |
35 | { | |
c4029823 | 36 | __set_errno (EINVAL); |
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37 | return -1; |
38 | } | |
39 | ||
c4029823 | 40 | if (sigprocmask (SIG_SETMASK, set, &oset) < 0) |
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41 | return -1; |
42 | ||
43 | (void) pause(); | |
44 | save = errno; | |
45 | ||
c4029823 | 46 | if (sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL) < 0) |
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47 | return -1; |
48 | ||
c4029823 | 49 | __set_errno (save); |
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50 | return -1; |
51 | } | |
37ba7d66 | 52 | libc_hidden_def (__sigsuspend) |
a9ddb793 | 53 | weak_alias (__sigsuspend, sigsuspend) |