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 <stdlib.h>
27#include <stdio.h>
28#include <errno.h>
29#include <limits.h>
30
31#include "test-runner.h"
32
33static int
34parse_count(const char *str, int *value)
35{
36	char *end;
37	long v;
38
39	errno = 0;
40	v = strtol(str, &end, 10);
41	if ((errno == ERANGE && (v == LONG_MAX || v == LONG_MIN)) ||
42	    (errno != 0 && v == 0) ||
43	    (end == str) ||
44	    (*end != '\0')) {
45		return -1;
46	}
47
48	if (v < 0 || v > INT_MAX) {
49		return -1;
50	}
51
52	*value = v;
53	return 0;
54}
55
56int main(int argc, char *argv[])
57{
58	int expected;
59
60	if (argc != 2)
61		goto help_out;
62
63	if (parse_count(argv[1], &expected) < 0)
64		goto help_out;
65
66	if (count_open_fds() == expected)
67		return EXIT_SUCCESS;
68	else
69		return EXIT_FAILURE;
70
71help_out:
72	fprintf(stderr, "Usage: %s N\n"
73		"where N is the expected number of open file descriptors.\n"
74		"This program exits with a failure if the number "
75		"does not match exactly.\n", argv[0]);
76
77	return EXIT_FAILURE;
78}
79