/* Poll (or wait) for file descriptor I/O availability. Stub version. Copyright (C) 1994-2024 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 <https://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)