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88499a87 | 1 | /* Linux pause syscall implementation. |
dff8da6b | 2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
a63c7fa1 | 3 | This file is part of the GNU C Library. |
a63c7fa1 CM |
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 | |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
a63c7fa1 CM |
18 | |
19 | #include <signal.h> | |
20 | #include <unistd.h> | |
21 | #include <sysdep-cancel.h> | |
22 | ||
23 | /* Suspend the process until a signal arrives. | |
24 | This always returns -1 and sets errno to EINTR. */ | |
c6bb095e AZ |
25 | int |
26 | __libc_pause (void) | |
a63c7fa1 | 27 | { |
88499a87 AZ |
28 | #ifdef __NR_pause |
29 | return SYSCALL_CANCEL (pause); | |
30 | #else | |
31 | return SYSCALL_CANCEL (ppoll, NULL, 0, NULL, NULL); | |
32 | #endif | |
a63c7fa1 | 33 | } |
a63c7fa1 | 34 | weak_alias (__libc_pause, pause) |