1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
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 |
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. |
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 |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <signal.h> |
19 | #include <time.h> |
20 | #include <unistd.h> |
21 | #include <errno.h> |
22 | |
23 | /* Make the process sleep for SECONDS seconds, or until a signal arrives |
24 | and is not ignored. The function returns the number of seconds less |
25 | than SECONDS which it actually slept (zero if it slept the full time). |
26 | If a signal handler does a `longjmp' or modifies the handling of the |
27 | SIGALRM signal while inside `sleep' call, the handling of the SIGALRM |
28 | signal afterwards is undefined. There is no return value to indicate |
29 | error, but if `sleep' returns SECONDS, it probably didn't work. */ |
30 | unsigned int |
31 | __sleep (unsigned int seconds) |
32 | { |
33 | __set_errno (ENOSYS); |
34 | return seconds; |
35 | } |
36 | weak_alias (__sleep, sleep) |
37 | |
38 | stub_warning (sleep) |
39 | |