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
__FD_ISSET_chk(int fd,fd_set * set,size_t set_size)33 extern "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
__FD_CLR_chk(int fd,fd_set * set,size_t set_size)46 extern "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
__FD_SET_chk(int fd,fd_set * set,size_t set_size)59 extern "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