50 lines
1.0 KiB
C
50 lines
1.0 KiB
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 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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int readlink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int readlink_main(int argc ATTRIBUTE_UNUSED, char **argv)
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{
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char *buf;
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char *fname;
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char pathbuf[PATH_MAX];
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USE_FEATURE_READLINK_FOLLOW(
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unsigned opt;
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/* We need exactly one non-option argument. */
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opt_complementary = "=1";
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opt = getopt32(argv, "f");
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fname = argv[optind];
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)
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SKIP_FEATURE_READLINK_FOLLOW(
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const unsigned opt = 0;
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if (argc != 2) bb_show_usage();
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fname = argv[1];
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)
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/* compat: coreutils readlink reports errors silently via exit code */
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logmode = LOGMODE_NONE;
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if (opt) {
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buf = realpath(fname, pathbuf);
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} else {
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buf = xmalloc_readlink_or_warn(fname);
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}
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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 && !opt)
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free(buf);
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fflush_stdout_and_exit(EXIT_SUCCESS);
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}
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