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82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
/* Checking macros for poll functions.
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Copyright (C) 2012-2017 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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<http://www.gnu.org/licenses/>. */
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#ifndef _SYS_POLL_H
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# error "Never include <bits/poll2.h> directly; use <sys/poll.h> instead."
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#endif
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__BEGIN_DECLS
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extern int __REDIRECT (__poll_alias, (struct pollfd *__fds, nfds_t __nfds,
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int __timeout), poll);
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extern int __poll_chk (struct pollfd *__fds, nfds_t __nfds, int __timeout,
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__SIZE_TYPE__ __fdslen);
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extern int __REDIRECT (__poll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
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int __timeout, __SIZE_TYPE__ __fdslen),
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__poll_chk)
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__warnattr ("poll called with fds buffer too small file nfds entries");
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__fortify_function int
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poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
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{
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if (__bos (__fds) != (__SIZE_TYPE__) -1)
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{
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if (! __builtin_constant_p (__nfds))
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return __poll_chk (__fds, __nfds, __timeout, __bos (__fds));
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else if (__bos (__fds) / sizeof (*__fds) < __nfds)
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return __poll_chk_warn (__fds, __nfds, __timeout, __bos (__fds));
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}
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return __poll_alias (__fds, __nfds, __timeout);
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}
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#ifdef __USE_GNU
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extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss), ppoll);
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extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss, __SIZE_TYPE__ __fdslen);
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extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss,
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__SIZE_TYPE__ __fdslen),
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__ppoll_chk)
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__warnattr ("ppoll called with fds buffer too small file nfds entries");
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__fortify_function int
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ppoll (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout,
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const __sigset_t *__ss)
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{
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if (__bos (__fds) != (__SIZE_TYPE__) -1)
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{
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if (! __builtin_constant_p (__nfds))
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return __ppoll_chk (__fds, __nfds, __timeout, __ss, __bos (__fds));
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else if (__bos (__fds) / sizeof (*__fds) < __nfds)
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return __ppoll_chk_warn (__fds, __nfds, __timeout, __ss,
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__bos (__fds));
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}
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return __ppoll_alias (__fds, __nfds, __timeout, __ss);
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}
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#endif
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__END_DECLS
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