LXR busybox/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//config:config CHGRP
  10//config:       bool "chgrp (7.6 kb)"
  11//config:       default y
  12//config:       help
  13//config:       chgrp is used to change the group ownership of files.
  14
  15//applet:IF_CHGRP(APPLET_NOEXEC(chgrp, chgrp, BB_DIR_BIN, BB_SUID_DROP, chgrp))
  16
  17//kbuild:lib-$(CONFIG_CHGRP) += chgrp.o chown.o
  18
  19/* BB_AUDIT SUSv3 defects - none? */
  20/* BB_AUDIT GNU defects - unsupported long options. */
  21/* http://www.opengroup.org/onlinepubs/007904975/utilities/chgrp.html */
  22
  23//usage:#define chgrp_trivial_usage
  24//usage:       "[-Rh"IF_DESKTOP("LHPcvf")"]... GROUP FILE..."
  25//usage:#define chgrp_full_usage "\n\n"
  26//usage:       "Change the group membership of FILEs to GROUP"
  27//usage:     "\n"
  28//usage:     "\n        -h      Affect symlinks instead of symlink targets"
  29//usage:        IF_DESKTOP(
  30//usage:     "\n        -L      Traverse all symlinks to directories"
  31//usage:     "\n        -H      Traverse symlinks on command line only"
  32//usage:     "\n        -P      Don't traverse symlinks (default)"
  33//usage:        )
  34//next 4 options are the same for chmod/chown/chgrp:
  35//usage:     "\n        -R      Recurse"
  36//usage:        IF_DESKTOP(
  37//usage:     "\n        -c      List changed files"
  38//usage:     "\n        -v      Verbose"
  39//usage:     "\n        -f      Hide errors"
  40//usage:        )
  41//usage:
  42//usage:#define chgrp_example_usage
  43//usage:       "$ ls -l /tmp/foo\n"
  44//usage:       "-r--r--r--    1 andersen andersen        0 Apr 12 18:25 /tmp/foo\n"
  45//usage:       "$ chgrp root /tmp/foo\n"
  46//usage:       "$ ls -l /tmp/foo\n"
  47//usage:       "-r--r--r--    1 andersen root            0 Apr 12 18:25 /tmp/foo\n"
  48
  49#include "libbb.h"
  50
  51/* This is a NOEXEC applet. Be very careful! */
  52
  53
  54int chgrp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  55int chgrp_main(int argc, char **argv)
  56{
  57        /* "chgrp [opts] abc file(s)" == "chown [opts] :abc file(s)" */
  58        char **p = argv;
  59        while (*++p) {
  60                if (p[0][0] != '-') {
  61                        p[0] = xasprintf(":%s", p[0]);
  62                        break;
  63                }
  64        }
  65        return chown_main(argc, argv);
  66}
  67