1 /*
2 * Copyright © 2012 Collabora, Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial
14 * portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 */
25
26 #include <assert.h>
27 #include <errno.h>
28 #include <dirent.h>
29 #include <stdio.h>
30 #include <unistd.h>
31 #include <time.h>
32
33 #include "test-runner.h"
34
35 int
count_open_fds(void)36 count_open_fds(void)
37 {
38 DIR *dir;
39 struct dirent *ent;
40 int count = 0;
41
42 dir = opendir("/proc/self/fd");
43 assert(dir && "opening /proc/self/fd failed.");
44
45 errno = 0;
46 while ((ent = readdir(dir))) {
47 const char *s = ent->d_name;
48 if (s[0] == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
49 continue;
50 count++;
51 }
52 assert(errno == 0 && "reading /proc/self/fd failed.");
53
54 closedir(dir);
55
56 return count;
57 }
58
59 void
exec_fd_leak_check(int nr_expected_fds)60 exec_fd_leak_check(int nr_expected_fds)
61 {
62 const char *exe = "./exec-fd-leak-checker";
63 char number[16] = { 0 };
64
65 snprintf(number, sizeof number - 1, "%d", nr_expected_fds);
66 execl(exe, exe, number, (char *)NULL);
67 assert(0 && "execing fd leak checker failed");
68 }
69
70 #define USEC_TO_NSEC(n) (1000 * (n))
71
72 /* our implementation of usleep and sleep functions that are safe to use with
73 * timeouts (timeouts are implemented using alarm(), so it is not safe use
74 * usleep and sleep. See man pages of these functions)
75 */
76 void
test_usleep(useconds_t usec)77 test_usleep(useconds_t usec)
78 {
79 struct timespec ts = {
80 .tv_sec = 0,
81 .tv_nsec = USEC_TO_NSEC(usec)
82 };
83
84 assert(nanosleep(&ts, NULL) == 0);
85 }
86
87 /* we must write the whole function instead of
88 * wrapping test_usleep, because useconds_t may not
89 * be able to contain such a big number of microseconds */
90 void
test_sleep(unsigned int sec)91 test_sleep(unsigned int sec)
92 {
93 struct timespec ts = {
94 .tv_sec = sec,
95 .tv_nsec = 0
96 };
97
98 assert(nanosleep(&ts, NULL) == 0);
99 }
100