| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <signal.h> |
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| 19 | #include <time.h> |
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| 20 | #include <unistd.h> |
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| 21 | #include <errno.h> |
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| 22 | |
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| 23 | /* Make the process sleep for SECONDS seconds, or until a signal arrives |
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| 24 | and is not ignored. The function returns the number of seconds less |
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| 25 | than SECONDS which it actually slept (zero if it slept the full time). |
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| 26 | If a signal handler does a `longjmp' or modifies the handling of the |
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| 27 | SIGALRM signal while inside `sleep' call, the handling of the SIGALRM |
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| 28 | signal afterwards is undefined. There is no return value to indicate |
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| 29 | error, but if `sleep' returns SECONDS, it probably didn't work. */ |
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| 30 | unsigned int |
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| 31 | __sleep (unsigned int seconds) |
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| 32 | { |
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| 33 | __set_errno (ENOSYS); |
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| 34 | return seconds; |
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| 35 | } |
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| 36 | weak_alias (__sleep, sleep) |
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| 37 | |
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| 38 | stub_warning (sleep) |
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| 39 | |
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