projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 66b3d198 UD |
1 | /* Copyright (C) 1991,92,94-98,2000,2002,2003,2004 |
| 2 | Free Software Foundation, Inc. | |
| 84384f5b | 3 | This file is part of the GNU C Library. |
| 28f540f4 | 4 | |
| 84384f5b | 5 | The GNU C Library is free software; you can redistribute it and/or |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 28f540f4 | 9 | |
| 84384f5b UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 28f540f4 | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 28f540f4 | 18 | |
| 66b3d198 | 19 | #define sigpause __rename_sigpause |
| 28f540f4 RM |
20 | #include <errno.h> |
| 21 | #include <signal.h> | |
| 19361cb7 | 22 | #include <stddef.h> /* For NULL. */ |
| 6ee8d334 | 23 | #include <sysdep-cancel.h> |
| 66b3d198 | 24 | #undef sigpause |
| 28f540f4 | 25 | |
| b5d482d0 RM |
26 | #include <sigset-cvt-mask.h> |
| 27 | ||
| 28f540f4 RM |
28 | /* Set the mask of blocked signals to MASK, |
| 29 | wait for a signal to arrive, and then restore the mask. */ | |
| 6ee8d334 UD |
30 | static int |
| 31 | do_sigpause (int sig_or_mask, int is_sig) | |
| 28f540f4 RM |
32 | { |
| 33 | sigset_t set; | |
| 28f540f4 | 34 | |
| 6d52618b UD |
35 | if (is_sig != 0) |
| 36 | { | |
| 37 | /* The modern X/Open implementation is requested. */ | |
| 50304ef0 | 38 | if (__sigprocmask (0, NULL, &set) < 0 |
| 7ffac51f | 39 | || sigdelset (&set, sig_or_mask) < 0) |
| 6d52618b UD |
40 | return -1; |
| 41 | } | |
| b5d482d0 RM |
42 | else if (sigset_set_old_mask (&set, sig_or_mask) < 0) |
| 43 | return -1; | |
| 6d52618b | 44 | |
| 7a114794 UD |
45 | /* Note the sigpause() is a cancellation point. But since we call |
| 46 | sigsuspend() which itself is a cancellation point we do not have | |
| 47 | to do anything here. */ | |
| 50304ef0 | 48 | return __sigsuspend (&set); |
| 28f540f4 | 49 | } |
| 6ee8d334 UD |
50 | |
| 51 | int | |
| 52 | __sigpause (int sig_or_mask, int is_sig) | |
| 53 | { | |
| 54 | if (SINGLE_THREAD_P) | |
| 55 | return do_sigpause (sig_or_mask, is_sig); | |
| 56 | ||
| 57 | int oldtype = LIBC_CANCEL_ASYNC (); | |
| 58 | ||
| 59 | int result = do_sigpause (sig_or_mask, is_sig); | |
| 60 | ||
| 61 | LIBC_CANCEL_RESET (oldtype); | |
| 62 | ||
| 63 | return result; | |
| 64 | } | |
| 5841dad9 | 65 | libc_hidden_def (__sigpause) |
| 6bc31da0 UD |
66 | |
| 67 | /* We have to provide a default version of this function since the | |
| 68 | standards demand it. The version which is a bit more reasonable is | |
| 69 | the BSD version. So make this the default. */ | |
| 6bc31da0 | 70 | int |
| 34a075be | 71 | __attribute__ ((weak)) |
| 8ce9ea0c | 72 | __default_sigpause (int mask) |
| 6bc31da0 UD |
73 | { |
| 74 | return __sigpause (mask, 0); | |
| 75 | } | |
| df4ef2ab | 76 | #undef sigpause |
| 6bc31da0 | 77 | weak_alias (__default_sigpause, sigpause) |
| e5e45b53 | 78 | strong_alias (__default_sigpause, __libc_sigpause) |
| 8ce9ea0c UD |
79 | |
| 80 | ||
| 81 | /* We have to provide a default version of this function since the | |
| 82 | standards demand it. The version which is a bit more reasonable is | |
| 83 | the BSD version. So make this the default. */ | |
| 84 | int | |
| 34a075be | 85 | __attribute__ ((weak)) |
| 8ce9ea0c UD |
86 | __xpg_sigpause (int sig) |
| 87 | { | |
| 88 | return __sigpause (sig, 1); | |
| 89 | } | |
| e5e45b53 | 90 | strong_alias (__xpg_sigpause, __libc___xpg_sigpause) |