source: MondoRescue/branches/2.2.5/mindi-busybox/coreutils/readlink.c @ 1765

Last change on this file since 1765 was 1765, checked in by Bruno Cornec, 12 years ago

Update to busybox 1.7.2

  • Property svn:eol-style set to native
File size: 1.0 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini readlink implementation for busybox
4 *
5 * Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
6 *
7 * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include <getopt.h>
11
12#include "libbb.h"
13
14int readlink_main(int argc, char **argv);
15int readlink_main(int argc, char **argv)
16{
17    char *buf;
18    char *fname;
19
20    USE_FEATURE_READLINK_FOLLOW(
21        unsigned opt;
22        /* We need exactly one non-option argument.  */
23        opt_complementary = "=1";
24        opt = getopt32(argv, "f");
25        fname = argv[optind];
26    )
27    SKIP_FEATURE_READLINK_FOLLOW(
28        const unsigned opt = 0;
29        if (argc != 2) bb_show_usage();
30        fname = argv[1];
31    )
32
33    /* compat: coreutils readlink reports errors silently via exit code */
34    logmode = LOGMODE_NONE;
35
36    if (opt) {
37        buf = realpath(fname, bb_common_bufsiz1);
38    } else {
39        buf = xmalloc_readlink_or_warn(fname);
40    }
41
42    if (!buf)
43        return EXIT_FAILURE;
44    puts(buf);
45
46    if (ENABLE_FEATURE_CLEAN_UP && !opt)
47        free(buf);
48
49    fflush_stdout_and_exit(EXIT_SUCCESS);
50}
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