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47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Linux poll implementation.
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Copyright (C) 2017-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/poll.h>
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#include <sysdep-cancel.h>
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#include <sys/syscall.h>
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int
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__poll (struct pollfd *fds, nfds_t nfds, int timeout)
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{
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#ifdef __NR_poll
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return SYSCALL_CANCEL (poll, fds, nfds, timeout);
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#else
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struct timespec timeout_ts;
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struct timespec *timeout_ts_p = NULL;
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if (timeout >= 0)
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{
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timeout_ts.tv_sec = timeout / 1000;
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timeout_ts.tv_nsec = (timeout % 1000) * 1000000;
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timeout_ts_p = &timeout_ts;
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}
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return SYSCALL_CANCEL (ppoll, fds, nfds, timeout_ts_p, NULL, 0);
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#endif
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}
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libc_hidden_def (__poll)
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weak_alias (__poll, poll)
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strong_alias (__poll, __libc_poll)
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