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glibc/io/poll.c
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/* Poll (or wait) for file descriptor I/O availability. Stub version. | |
Copyright (C) 1994-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <sys/poll.h> | |
#include <errno.h> | |
/* Poll the file descriptors described by the NFDS structures starting at | |
FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for | |
an event to occur; if TIMEOUT is -1, block until an event occurs. | |
Returns the number of file descriptors with events, zero if timed out, | |
or -1 for errors. */ | |
int | |
__poll (struct pollfd *fds, nfds_t nfds, int timeout) | |
{ | |
__set_errno (ENOSYS); | |
return -1; | |
} | |
libc_hidden_def (__poll) | |
weak_alias (__poll, poll) | |
stub_warning (poll) |