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/* vi: set sw=4 ts=4: */
/*
* Mini readlink implementation for busybox
*
* Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* Licensed under GPL v2, see file LICENSE in this tarball for details.
*/
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
#include "busybox.h"
#define READLINK_FLAG_f (1 << 0)
int readlink_main(int argc, char **argv)
{
char *buf;
unsigned long opt = ENABLE_FEATURE_READLINK_FOLLOW ?
bb_getopt_ulflags(argc, argv, "f") : 0;
if (argc != (ENABLE_FEATURE_READLINK_FOLLOW ? optind + 1 : 2))
bb_show_usage();
if (opt & READLINK_FLAG_f)
buf = realpath(argv[optind], NULL);
else
buf = xreadlink(argv[ENABLE_FEATURE_READLINK_FOLLOW ? optind : 1]);
if (!buf)
return EXIT_FAILURE;
puts(buf);
if (ENABLE_FEATURE_CLEAN_UP) free(buf);
return EXIT_SUCCESS;
}
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