mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini readlink implementation for busybox
|
|
*
|
|
* Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
|
|
*
|
|
* 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 2 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <getopt.h>
|
|
#include "busybox.h"
|
|
|
|
#ifdef CONFIG_FEATURE_READLINK_FOLLOW
|
|
# define READLINK_FOLLOW "f"
|
|
# define READLINK_FLAG_f (1 << 0)
|
|
#else
|
|
# define READLINK_FOLLOW ""
|
|
#endif
|
|
|
|
static const char readlink_options[] = READLINK_FOLLOW;
|
|
|
|
int readlink_main(int argc, char **argv)
|
|
{
|
|
char *buf = NULL;
|
|
unsigned long opt = bb_getopt_ulflags(argc, argv, readlink_options);
|
|
#ifdef CONFIG_FEATURE_READLINK_FOLLOW
|
|
RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
|
|
#endif
|
|
|
|
/* no options, no getopt */
|
|
|
|
if (optind + 1 != argc)
|
|
bb_show_usage();
|
|
|
|
#ifdef CONFIG_FEATURE_READLINK_FOLLOW
|
|
if (opt & READLINK_FLAG_f) {
|
|
buf = realpath(argv[optind], resolved_path);
|
|
} else
|
|
#endif
|
|
buf = xreadlink(argv[optind]);
|
|
|
|
if (!buf)
|
|
return EXIT_FAILURE;
|
|
puts(buf);
|
|
#ifdef CONFIG_FEATURE_CLEAN_UP
|
|
free(buf);
|
|
#endif
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|