1 /* Poll (or wait) for file descriptor I/O availability. Stub version.
2 Copyright (C) 1994-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <sys/poll.h>
20 #include <errno.h>
21
22 /* Poll the file descriptors described by the NFDS structures starting at
23 FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
24 an event to occur; if TIMEOUT is -1, block until an event occurs.
25 Returns the number of file descriptors with events, zero if timed out,
26 or -1 for errors. */
27
28 int
__poll(struct pollfd * fds,nfds_t nfds,int timeout)29 __poll (struct pollfd *fds, nfds_t nfds, int timeout)
30 {
31 __set_errno (ENOSYS);
32 return -1;
33 }
34 libc_hidden_def (__poll)
35 weak_alias (__poll, poll)
36
37 stub_warning (poll)
38