1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#undef _FORTIFY_SOURCE
30#include <sys/select.h>
31#include "private/libc_logging.h"
32
33extern "C" int __FD_ISSET_chk(int fd, fd_set* set, size_t set_size) {
34  if (__predict_false(fd < 0)) {
35    __fortify_chk_fail("FD_ISSET: file descriptor < 0", 0);
36  }
37  if (__predict_false(fd >= FD_SETSIZE)) {
38    __fortify_chk_fail("FD_ISSET: file descriptor >= FD_SETSIZE", 0);
39  }
40  if (__predict_false(set_size < sizeof(fd_set))) {
41    __fortify_chk_fail("FD_ISSET: set is too small", 0);
42  }
43  return FD_ISSET(fd, set);
44}
45
46extern "C" void __FD_CLR_chk(int fd, fd_set* set, size_t set_size) {
47  if (__predict_false(fd < 0)) {
48    __fortify_chk_fail("FD_CLR: file descriptor < 0", 0);
49  }
50  if (__predict_false(fd >= FD_SETSIZE)) {
51    __fortify_chk_fail("FD_CLR: file descriptor >= FD_SETSIZE", 0);
52  }
53  if (__predict_false(set_size < sizeof(fd_set))) {
54    __fortify_chk_fail("FD_CLR: set is too small", 0);
55  }
56  FD_CLR(fd, set);
57}
58
59extern "C" void __FD_SET_chk(int fd, fd_set* set, size_t set_size) {
60  if (__predict_false(fd < 0)) {
61    __fortify_chk_fail("FD_SET: file descriptor < 0", 0);
62  }
63  if (__predict_false(fd >= FD_SETSIZE)) {
64    __fortify_chk_fail("FD_SET: file descriptor >= FD_SETSIZE", 0);
65  }
66  if (__predict_false(set_size < sizeof(fd_set))) {
67    __fortify_chk_fail("FD_SET: set is too small", 0);
68  }
69  FD_SET(fd, set);
70}
71