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688903eb | 1 | /* Copyright (C) 1991-2018 Free Software Foundation, Inc. |
84384f5b | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
84384f5b | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
84384f5b UD |
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. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
66b3d198 | 18 | #define sigpause __rename_sigpause |
28f540f4 RM |
19 | #include <errno.h> |
20 | #include <signal.h> | |
19361cb7 | 21 | #include <stddef.h> /* For NULL. */ |
66b3d198 | 22 | #undef sigpause |
28f540f4 | 23 | |
b5d482d0 | 24 | #include <sigset-cvt-mask.h> |
ad4f43a2 | 25 | #include <sysdep-cancel.h> |
b5d482d0 | 26 | |
ad4f43a2 AZ |
27 | int |
28 | __sigpause (int sig_or_mask, int is_sig) | |
28f540f4 RM |
29 | { |
30 | sigset_t set; | |
28f540f4 | 31 | |
6d52618b UD |
32 | if (is_sig != 0) |
33 | { | |
34 | /* The modern X/Open implementation is requested. */ | |
50304ef0 | 35 | if (__sigprocmask (0, NULL, &set) < 0 |
7ffac51f | 36 | || sigdelset (&set, sig_or_mask) < 0) |
6d52618b UD |
37 | return -1; |
38 | } | |
b5d482d0 RM |
39 | else if (sigset_set_old_mask (&set, sig_or_mask) < 0) |
40 | return -1; | |
6d52618b | 41 | |
7a114794 UD |
42 | /* Note the sigpause() is a cancellation point. But since we call |
43 | sigsuspend() which itself is a cancellation point we do not have | |
44 | to do anything here. */ | |
50304ef0 | 45 | return __sigsuspend (&set); |
28f540f4 | 46 | } |
5841dad9 | 47 | libc_hidden_def (__sigpause) |
6bc31da0 UD |
48 | |
49 | /* We have to provide a default version of this function since the | |
50 | standards demand it. The version which is a bit more reasonable is | |
51 | the BSD version. So make this the default. */ | |
6bc31da0 | 52 | int |
34a075be | 53 | __attribute__ ((weak)) |
8ce9ea0c | 54 | __default_sigpause (int mask) |
6bc31da0 UD |
55 | { |
56 | return __sigpause (mask, 0); | |
57 | } | |
df4ef2ab | 58 | #undef sigpause |
6bc31da0 | 59 | weak_alias (__default_sigpause, sigpause) |
e5e45b53 | 60 | strong_alias (__default_sigpause, __libc_sigpause) |
8ce9ea0c UD |
61 | |
62 | ||
63 | /* We have to provide a default version of this function since the | |
64 | standards demand it. The version which is a bit more reasonable is | |
65 | the BSD version. So make this the default. */ | |
66 | int | |
34a075be | 67 | __attribute__ ((weak)) |
8ce9ea0c UD |
68 | __xpg_sigpause (int sig) |
69 | { | |
70 | return __sigpause (sig, 1); | |
71 | } | |
e5e45b53 | 72 | strong_alias (__xpg_sigpause, __libc___xpg_sigpause) |
ad4f43a2 AZ |
73 | |
74 | /* __sigsuspend handles cancellation. */ | |
75 | LIBC_CANCEL_HANDLED (); |