mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-24 12:19:49 +00:00
40 lines
860 B
C
40 lines
860 B
C
/* 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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* Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
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* Licensed under GPL v2, see file LICENSE in this tarball for details.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include "busybox.h"
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#define READLINK_FLAG_f (1 << 0)
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int readlink_main(int argc, char **argv)
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{
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char *buf;
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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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if (argc != (ENABLE_FEATURE_READLINK_FOLLOW ? optind + 1 : 2))
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bb_show_usage();
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if (opt & READLINK_FLAG_f)
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buf = realpath(argv[optind], NULL);
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else
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buf = xreadlink(argv[ENABLE_FEATURE_READLINK_FOLLOW ? optind : 1]);
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if (!buf)
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return EXIT_FAILURE;
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puts(buf);
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if (ENABLE_FEATURE_CLEAN_UP) free(buf);
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return EXIT_SUCCESS;
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}
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