7943df62f7
Make sure the buffer we're dealing with has enough room. Might as well check for memory issues while we're here, even though I don't imagine they'll happen in practice. Change-Id: I0ae1f0f06aca9ceb91e58c70183bb14e275b92b5
72 lines
2.8 KiB
C
72 lines
2.8 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 _SYS_SELECT_H_
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#define _SYS_SELECT_H_
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#include <sys/cdefs.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <string.h>
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__BEGIN_DECLS
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#define __FD_SETSIZE 1024
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#define __NFDBITS (8 * sizeof(unsigned long))
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#define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)
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typedef struct {
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unsigned long fds_bits[__FDSET_LONGS];
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} fd_set;
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#define __FDELT(fd) ((fd) / __NFDBITS)
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#define __FDMASK(fd) (1UL << ((fd) % __NFDBITS))
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#define __FDS_BITS(set) (((fd_set*)(set))->fds_bits)
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#define __FD_ZERO(set) (memset(set, 0, sizeof(*(fd_set*)(set))))
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#if defined(__BIONIC_FORTIFY)
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extern void __FD_CLR_chk(int, fd_set*, size_t);
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extern void __FD_SET_chk(int, fd_set*, size_t);
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extern int __FD_ISSET_chk(int, fd_set*, size_t);
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#define __FD_CLR(fd, set) __FD_CLR_chk(fd, set, __bos(set))
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#define __FD_SET(fd, set) __FD_SET_chk(fd, set, __bos(set))
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#define __FD_ISSET(fd, set) __FD_ISSET_chk(fd, set, __bos(set))
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#else
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#define __FD_CLR(fd, set) (__FDS_BITS(set)[__FDELT(fd)] &= ~__FDMASK(fd))
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#define __FD_SET(fd, set) (__FDS_BITS(set)[__FDELT(fd)] |= __FDMASK(fd))
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#define __FD_ISSET(fd, set) ((__FDS_BITS(set)[__FDELT(fd)] & __FDMASK(fd)) != 0)
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#endif /* defined(__BIONIC_FORTIFY) */
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extern int select(int, fd_set*, fd_set*, fd_set*, struct timeval*);
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extern int pselect(int n, fd_set* read_fds, fd_set* write_fds, fd_set* err_fds,
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const struct timespec * timeout, const sigset_t* sigmask);
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__END_DECLS
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#endif /* _SYS_SELECT_H_ */
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