coreutils/chgrp.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini chgrp implementation for busybox
   4  *
   5  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8  */
   9
  10 /* BB_AUDIT SUSv3 defects - none? */
  11 /* BB_AUDIT GNU defects - unsupported long options. */
  12 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chgrp.html */
  13
  14 //usage:#define chgrp_trivial_usage
  15 //usage:       "[-RhLHP"IF_DESKTOP("cvf")"]... GROUP FILE..."
  16 //usage:#define chgrp_full_usage "\n\n"
  17 //usage:       "Change the group membership of each FILE to GROUP\n"
  18 //usage:     "\n        -R      Recurse"
  19 //usage:     "\n        -h      Affect symlinks instead of symlink targets"
  20 //usage:     "\n        -L      Traverse all symlinks to directories"
  21 //usage:     "\n        -H      Traverse symlinks on command line only"
  22 //usage:     "\n        -P      Don't traverse symlinks (default)"
  23 //usage:        IF_DESKTOP(
  24 //usage:     "\n        -c      List changed files"
  25 //usage:     "\n        -v      Verbose"
  26 //usage:     "\n        -f      Hide errors"
  27 //usage:        )
  28 //usage:
  29 //usage:#define chgrp_example_usage
  30 //usage:       "$ ls -l /tmp/foo\n"
  31 //usage:       "-r--r--r--    1 andersen andersen        0 Apr 12 18:25 /tmp/foo\n"
  32 //usage:       "$ chgrp root /tmp/foo\n"
  33 //usage:       "$ ls -l /tmp/foo\n"
  34 //usage:       "-r--r--r--    1 andersen root            0 Apr 12 18:25 /tmp/foo\n"
  35
  36 #include "libbb.h"
  37
  38 /* This is a NOEXEC applet. Be very careful! */
  39
  40
  41 int chgrp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  42 int chgrp_main(int argc, char **argv)
  43 {
  44         /* "chgrp [opts] abc file(s)" == "chown [opts] :abc file(s)" */
  45         char **p = argv;
  46         while (*++p) {
  47                 if (p[0][0] != '-') {
  48                         p[0] = xasprintf(":%s", p[0]);
  49                         break;
  50                 }
  51         }
  52         return chown_main(argc, argv);
  53 }