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b168057a | 1 | /* Copyright (C) 1997-2015 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. |
cbdee279 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
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15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | #include <errno.h> | |
19 | #include <signal.h> | |
e876b090 | 20 | #include <string.h> /* Needed for string function builtin redirection. */ |
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21 | #include <unistd.h> |
22 | ||
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23 | #include <sysdep.h> |
24 | #include <sys/syscall.h> | |
25 | ||
e876b090 | 26 | #include <nptl/pthreadP.h> /* SIGCANCEL, SIGSETXID */ |
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27 | |
28 | ||
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29 | /* Get and/or change the set of blocked signals. */ |
30 | int | |
bd2260a2 | 31 | __sigprocmask (int how, const sigset_t *set, sigset_t *oset) |
cbdee279 | 32 | { |
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33 | #ifdef SIGCANCEL |
34 | sigset_t local_newmask; | |
35 | ||
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36 | /* The only thing we have to make sure here is that SIGCANCEL and |
37 | SIGSETXID are not blocked. */ | |
38 | if (set != NULL | |
39 | && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) | |
40 | # ifdef SIGSETXID | |
41 | || __builtin_expect (__sigismember (set, SIGSETXID), 0) | |
42 | # endif | |
43 | )) | |
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44 | { |
45 | local_newmask = *set; | |
46 | __sigdelset (&local_newmask, SIGCANCEL); | |
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47 | # ifdef SIGSETXID |
48 | __sigdelset (&local_newmask, SIGSETXID); | |
49 | # endif | |
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50 | set = &local_newmask; |
51 | } | |
52 | #endif | |
53 | ||
e5dee2c8 | 54 | return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8); |
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55 | } |
56 | weak_alias (__sigprocmask, sigprocmask) |