1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2011, 2012 Peter Miller
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/getpgid.h>
#include <libexplain/strtol.h>
#include <libexplain/version_print.h>
static void
usage(void)
{
fprintf(stderr, "Usage: test_getpgid <pid>\n");
fprintf(stderr, " test_getpgid -V\n");
exit(EXIT_FAILURE);
}
int
main(int argc, char **argv)
{
pid_t pid;
for (;;)
{
int c = getopt(argc, argv, "V");
if (c == EOF)
break;
switch (c)
{
case 'V':
explain_version_print();
return EXIT_SUCCESS;
default:
usage();
}
}
if (optind + 1 != argc)
usage();
pid = explain_strtol_or_die(argv[optind], 0, 0);
printf("%d\n", (int)explain_getpgid_or_die(pid));
return EXIT_SUCCESS;
}
/* vim: set ts=8 sw=4 et : */
|
