| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1991,92,94-98,2000,2002,2003,2004 |
| 2 | Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 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. |
| 9 | |
| 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 |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 18 | 02111-1307 USA. */ |
| 19 | |
| 20 | #define __UCLIBC_HIDE_DEPRECATED__ |
| 21 | /* psm: need the BSD version of sigpause here */ |
| 22 | #include <errno.h> |
| 23 | #define __FAVOR_BSD |
| 24 | #include <signal.h> |
| 25 | #include <stddef.h> /* For NULL. */ |
| 26 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 27 | #include <sysdep-cancel.h> |
| 28 | #endif |
| 29 | |
| 30 | #include "sigset-cvt-mask.h" |
| 31 | |
| 32 | /* Set the mask of blocked signals to MASK, |
| 33 | wait for a signal to arrive, and then restore the mask. */ |
| 34 | int __sigpause (int sig_or_mask, int is_sig) |
| 35 | { |
| 36 | sigset_t set; |
| 37 | |
| 38 | if (is_sig) |
| 39 | { |
| 40 | /* The modern X/Open implementation is requested. */ |
| 41 | sigprocmask (SIG_BLOCK, NULL, &set); |
| 42 | /* Bound-check sig_or_mask, remove it from the set. */ |
| 43 | if (sigdelset (&set, sig_or_mask) < 0) |
| 44 | return -1; |
| 45 | } |
| 46 | else |
| 47 | sigset_set_old_mask (&set, sig_or_mask); |
| 48 | |
| 49 | /* Note the sigpause() is a cancellation point. But since we call |
| 50 | sigsuspend() which itself is a cancellation point we do not have |
| 51 | to do anything here. */ |
| 52 | return sigsuspend (&set); |
| 53 | } |
| 54 | libc_hidden_def(__sigpause) |
| 55 | |
| 56 | #undef sigpause |
| 57 | |
| 58 | /* We have to provide a default version of this function since the |
| 59 | standards demand it. The version which is a bit more reasonable is |
| 60 | the BSD version. So make this the default. */ |
| 61 | int sigpause (int mask) |
| 62 | { |
| 63 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 64 | if (SINGLE_THREAD_P) |
| 65 | return __sigpause (mask, 0); |
| 66 | |
| 67 | int oldtype = LIBC_CANCEL_ASYNC (); |
| 68 | |
| 69 | int result = __sigpause (mask, 0); |
| 70 | |
| 71 | LIBC_CANCEL_RESET (oldtype); |
| 72 | |
| 73 | return result; |
| 74 | #else |
| 75 | return __sigpause (mask, 0); |
| 76 | #endif |
| 77 | } |