| 1 | /* Poll (or wait) for file descriptor I/O availability. Stub version. |
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| 2 | Copyright (C) 1994-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <sys/poll.h> |
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| 20 | #include <errno.h> |
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| 21 | |
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| 22 | /* Poll the file descriptors described by the NFDS structures starting at |
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| 23 | FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for |
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| 24 | an event to occur; if TIMEOUT is -1, block until an event occurs. |
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| 25 | Returns the number of file descriptors with events, zero if timed out, |
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| 26 | or -1 for errors. */ |
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| 27 | |
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| 28 | int |
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| 29 | __poll (struct pollfd *fds, nfds_t nfds, int timeout) |
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| 30 | { |
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| 31 | __set_errno (ENOSYS); |
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| 32 | return -1; |
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| 33 | } |
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| 34 | libc_hidden_def (__poll) |
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| 35 | weak_alias (__poll, poll) |
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| 36 | |
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| 37 | stub_warning (poll) |
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| 38 | |
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