libbb: move isqrt from factor, use it in diff too

[oweals/busybox.git] / coreutils / chgrp.c

diff --git a/coreutils/chgrp.c b/coreutils/chgrp.c
index 465ea0ccf5cb61ceb27937e1104d03e7dd7ba110..8dca63cf705db4580b768cbbf6414e4fefe9d411 100644 (file)
--- a/coreutils/chgrp.c
+++ b/coreutils/chgrp.c
@@ -4,18 +4,50 @@
  *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config CHGRP
+//config:      bool "chgrp"
+//config:      default y
+//config:      help
+//config:        chgrp is used to change the group ownership of files.
 
-/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
+//applet:IF_CHGRP(APPLET_NOEXEC(chgrp, chgrp, BB_DIR_BIN, BB_SUID_DROP, chgrp))
+
+//kbuild:lib-$(CONFIG_CHGRP) += chgrp.o chown.o
+
+/* BB_AUDIT SUSv3 defects - none? */
 /* BB_AUDIT GNU defects - unsupported long options. */
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chgrp.html */
 
-#include "busybox.h"
+//usage:#define chgrp_trivial_usage
+//usage:       "[-RhLHP"IF_DESKTOP("cvf")"]... GROUP FILE..."
+//usage:#define chgrp_full_usage "\n\n"
+//usage:       "Change the group membership of each FILE to GROUP\n"
+//usage:     "\n       -R      Recurse"
+//usage:     "\n       -h      Affect symlinks instead of symlink targets"
+//usage:     "\n       -L      Traverse all symlinks to directories"
+//usage:     "\n       -H      Traverse symlinks on command line only"
+//usage:     "\n       -P      Don't traverse symlinks (default)"
+//usage:       IF_DESKTOP(
+//usage:     "\n       -c      List changed files"
+//usage:     "\n       -v      Verbose"
+//usage:     "\n       -f      Hide errors"
+//usage:       )
+//usage:
+//usage:#define chgrp_example_usage
+//usage:       "$ ls -l /tmp/foo\n"
+//usage:       "-r--r--r--    1 andersen andersen        0 Apr 12 18:25 /tmp/foo\n"
+//usage:       "$ chgrp root /tmp/foo\n"
+//usage:       "$ ls -l /tmp/foo\n"
+//usage:       "-r--r--r--    1 andersen root            0 Apr 12 18:25 /tmp/foo\n"
+
+#include "libbb.h"
+
+/* This is a NOEXEC applet. Be very careful! */
 
-/* FIXME - move to .h */
-extern int chown_main(int argc, char **argv);
 
+int chgrp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int chgrp_main(int argc, char **argv)
 {
        /* "chgrp [opts] abc file(s)" == "chown [opts] :abc file(s)" */