92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _POLL_H_
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#define _POLL_H_
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#include <sys/cdefs.h>
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#include <linux/poll.h>
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#include <signal.h> /* For sigset_t. */
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#include <time.h> /* For timespec. */
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__BEGIN_DECLS
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typedef unsigned int nfds_t;
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int poll(struct pollfd*, nfds_t, int);
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int ppoll(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*) __INTRODUCED_IN(21);
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int __poll_chk(struct pollfd*, nfds_t, int, size_t) __INTRODUCED_IN(23);
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int __poll_real(struct pollfd*, nfds_t, int) __RENAME(poll);
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__errordecl(__poll_too_small_error, "poll: pollfd array smaller than fd count");
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int __ppoll_chk(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*, size_t)
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__INTRODUCED_IN(23);
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int __ppoll_real(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*) __RENAME(ppoll)
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__INTRODUCED_IN(21);
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__errordecl(__ppoll_too_small_error, "ppoll: pollfd array smaller than fd count");
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#if defined(__BIONIC_FORTIFY)
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__BIONIC_FORTIFY_INLINE
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int poll(struct pollfd* fds, nfds_t fd_count, int timeout) {
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#if defined(__clang__)
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return __poll_chk(fds, fd_count, timeout, __bos(fds));
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#else
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if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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if (!__builtin_constant_p(fd_count)) {
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return __poll_chk(fds, fd_count, timeout, __bos(fds));
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} else if (__bos(fds) / sizeof(*fds) < fd_count) {
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__poll_too_small_error();
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}
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}
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return __poll_real(fds, fd_count, timeout);
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#endif
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}
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__BIONIC_FORTIFY_INLINE
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int ppoll(struct pollfd* fds, nfds_t fd_count, const struct timespec* timeout, const sigset_t* mask) {
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#if defined(__clang__)
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return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds));
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#else
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if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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if (!__builtin_constant_p(fd_count)) {
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return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds));
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} else if (__bos(fds) / sizeof(*fds) < fd_count) {
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__ppoll_too_small_error();
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}
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}
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return __ppoll_real(fds, fd_count, timeout, mask);
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#endif
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}
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#endif
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__END_DECLS
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#endif /* _POLL_H_ */
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