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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2011 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/setpgid.h>
#include <libexplain/strtol.h>
#include <libexplain/version_print.h>
static void
usage(void)
{
fprintf(stderr, "Usage: test_setpgid <pid> <pgid>\n");
fprintf(stderr, " test_setpgid -V\n");
exit(EXIT_FAILURE);
}
int
main(int argc, char **argv)
{
pid_t pid;
pid_t pgid;
for (;;)
{
int c = getopt(argc, argv, "V");
if (c == EOF)
break;
switch (c)
{
case 'V':
explain_version_print();
return EXIT_SUCCESS;
default:
usage();
}
}
pid = 0;
pgid = 0;
switch (argc - optind)
{
case 2:
pgid = explain_strtol_or_die(argv[optind + 1], 0, 0);
case 1:
pid = explain_strtol_or_die(argv[optind], 0, 0);
case 0:
break;
default:
usage();
}
explain_setpgid_or_die(pid, pgid);
return EXIT_SUCCESS;
}
/* vim: set ts=8 sw=4 et */
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