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
70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
/*
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* Copyright (C) 2013 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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#undef _FORTIFY_SOURCE
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#include <sys/select.h>
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#include "libc_logging.h"
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extern "C" int __FD_ISSET_chk(int fd, fd_set* set, size_t set_size) {
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if (__predict_false(fd < 0)) {
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__fortify_chk_fail("file descriptor is negative for FD_ISSET", 0);
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}
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if (__predict_false(fd >= FD_SETSIZE)) {
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__fortify_chk_fail("file descriptor is too big for FD_ISSET", 0);
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}
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if (__predict_false(set_size < sizeof(fd_set))) {
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__fortify_chk_fail("set is too small", 0);
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}
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return FD_ISSET(fd, set);
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}
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extern "C" void __FD_CLR_chk(int fd, fd_set* set, size_t set_size) {
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if (__predict_false(fd < 0)) {
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__fortify_chk_fail("file descriptor is negative for FD_CLR", 0);
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}
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if (__predict_false(fd >= FD_SETSIZE)) {
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__fortify_chk_fail("file descriptor is too big for FD_CLR", 0);
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}
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if (__predict_false(set_size < sizeof(fd_set))) {
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__fortify_chk_fail("set is too small", 0);
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}
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FD_CLR(fd, set);
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}
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extern "C" void __FD_SET_chk(int fd, fd_set* set, size_t set_size) {
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if (__predict_false(fd < 0)) {
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__fortify_chk_fail("file descriptor is negative for FD_SET", 0);
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}
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if (__predict_false(fd >= FD_SETSIZE)) {
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__fortify_chk_fail("file descriptor is too big for FD_SET", 0);
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}
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if (__predict_false(set_size < sizeof(fd_set))) {
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__fortify_chk_fail("set is too small", 0);
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}
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FD_SET(fd, set);
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}
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