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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2008-2011 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
* 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/limits.h> /* for PATH_MAX on Solaris */
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/sys/param.h> /* for PATH_MAX except Solaris */
#include <libexplain/ac/unistd.h>
#include <libexplain/readlink.h>
#include <libexplain/version_print.h>
static void
usage(void)
{
fprintf(stderr, "Usage: test_readlink <pathname>\n");
fprintf(stderr, " test_readlink -V\n");
exit(EXIT_FAILURE);
}
int
main(int argc, char **argv)
{
const char *pathname;
int n;
char data[PATH_MAX + 1];
for (;;)
{
int c = getopt(argc, argv, "V");
if (c == EOF)
break;
switch (c)
{
case 'V':
explain_version_print();
return 0;
default:
usage();
}
}
if (optind + 1 != argc)
usage();
pathname = argv[optind];
n = explain_readlink_or_die(pathname, data, sizeof(data));
printf("%.*s\n", n, data);
return 0;
}
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