2000-10-09 18:56:47 +00:00
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/* vi: set sw=4 ts=4: */
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/*
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* Mini readlink implementation for busybox
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*
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2001-10-24 05:00:29 +00:00
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* Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
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2000-10-09 18:56:47 +00:00
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*
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2005-09-11 23:45:28 +00:00
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* Licensed under GPL v2, see file LICENSE in this tarball for details.
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2000-10-09 18:56:47 +00:00
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*/
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#include <errno.h>
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#include <unistd.h>
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2001-01-27 08:24:39 +00:00
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#include <stdlib.h>
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2004-12-08 16:47:28 +00:00
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#include <getopt.h>
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2001-02-20 06:14:08 +00:00
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#include "busybox.h"
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2000-10-09 18:56:47 +00:00
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2005-09-11 23:45:28 +00:00
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#define READLINK_FLAG_f (1 << 0)
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2004-12-08 16:47:28 +00:00
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2000-10-09 18:56:47 +00:00
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int readlink_main(int argc, char **argv)
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{
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2005-09-11 23:45:28 +00:00
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char *buf;
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2005-09-17 11:13:25 +00:00
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unsigned long opt = ENABLE_FEATURE_READLINK_FOLLOW ?
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bb_getopt_ulflags(argc, argv, "f") : 0;
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2001-04-30 18:17:00 +00:00
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2005-09-17 11:13:25 +00:00
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if (argc != (ENABLE_FEATURE_READLINK_FOLLOW ? optind + 1 : 2))
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bb_show_usage();
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2000-10-09 18:56:47 +00:00
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2005-09-17 11:13:25 +00:00
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if (opt & READLINK_FLAG_f)
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2006-05-17 04:09:14 +00:00
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buf = realpath(argv[optind], bb_common_bufsiz1);
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2005-09-11 23:45:28 +00:00
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else
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2005-09-17 11:13:25 +00:00
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buf = xreadlink(argv[ENABLE_FEATURE_READLINK_FOLLOW ? optind : 1]);
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2004-12-08 16:47:28 +00:00
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2001-05-07 17:48:28 +00:00
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if (!buf)
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return EXIT_FAILURE;
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2000-10-09 18:56:47 +00:00
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puts(buf);
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2005-09-11 01:05:30 +00:00
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2006-05-17 04:09:14 +00:00
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if (ENABLE_FEATURE_CLEAN_UP && buf != bb_common_bufsiz1) free(buf);
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2000-10-09 18:56:47 +00:00
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return EXIT_SUCCESS;
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}
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