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 0bb1e75c97f8340656bb8f6ad8d15ec676e97326..8dca63cf705db4580b768cbbf6414e4fefe9d411 100644 (file)
--- a/coreutils/chgrp.c
+++ b/coreutils/chgrp.c
@@ -1,90 +1,62 @@
 /* vi: set sw=4 ts=4: */
 /*
- * Mini chown/chmod/chgrp implementation for busybox
+ * Mini chgrp implementation for busybox
  *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "busybox.h"
-
-/* Don't use lchown for libc5 or glibc older then 2.1.x */
-#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1)
-#define lchown chown
-#endif
-
-
-static long gid = -1;
-
-static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
-{
-       if (lchown(fileName, statbuf->st_uid, (gid == -1) ? statbuf->st_gid : gid) == 0) {
-               return (TRUE);
-       }
-       perror(fileName);
-       return (FALSE);
-}
-
+//config:config CHGRP
+//config:      bool "chgrp"
+//config:      default y
+//config:      help
+//config:        chgrp is used to change the group ownership of files.
+
+//applet:IF_CHGRP(APPLET_NOEXEC(chgrp, chgrp, BB_DIR_BIN, BB_SUID_DROP, chgrp))
+
+//kbuild:lib-$(CONFIG_CHGRP) += chgrp.o chown.o
+
+/* BB_AUDIT SUSv3 defects - none? */
+/* BB_AUDIT GNU defects - unsupported long options. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/chgrp.html */
+
+//usage:#define chgrp_trivial_usage
+//usage:       "[-RhLHP"IF_DESKTOP("cvf")"]... GROUP FILE..."
+//usage:#define chgrp_full_usage "\n\n"
+//usage:       "Change the group membership of each FILE to GROUP\n"
+//usage:     "\n       -R      Recurse"
+//usage:     "\n       -h      Affect symlinks instead of symlink targets"
+//usage:     "\n       -L      Traverse all symlinks to directories"
+//usage:     "\n       -H      Traverse symlinks on command line only"
+//usage:     "\n       -P      Don't traverse symlinks (default)"
+//usage:       IF_DESKTOP(
+//usage:     "\n       -c      List changed files"
+//usage:     "\n       -v      Verbose"
+//usage:     "\n       -f      Hide errors"
+//usage:       )
+//usage:
+//usage:#define chgrp_example_usage
+//usage:       "$ 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! */
+
+
+int chgrp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int chgrp_main(int argc, char **argv)
 {
-       int opt;
-       int recursiveFlag = FALSE;
-       char *p=NULL;
-
-       /* do normal option parsing */
-       while ((opt = getopt(argc, argv, "R")) > 0) {
-               switch (opt) {
-                       case 'R':
-                               recursiveFlag = TRUE;
-                       default:
-                               show_usage();
+       /* "chgrp [opts] abc file(s)" == "chown [opts] :abc file(s)" */
+       char **p = argv;
+       while (*++p) {
+               if (p[0][0] != '-') {
+                       p[0] = xasprintf(":%s", p[0]);
+                       break;
                }
        }
-
-       if (argc > optind && argc > 2 && argv[optind]) {
-               /* Find the selected group */
-               gid = strtoul(argv[optind], &p, 10);    /* maybe it's already numeric */
-               if (argv[optind] == p)
-                       gid = my_getgrnam(argv[optind]);
-       } else {
-               error_msg_and_die(too_few_args);
-       }
-
-       /* Ok, ready to do the deed now */
-       while (optind++ < argc) {
-               if (recursive_action (argv[optind], recursiveFlag, FALSE, FALSE, 
-                                       fileAction, fileAction, NULL) == FALSE) {
-                       return EXIT_FAILURE;
-               }
-       }
-       return EXIT_SUCCESS;
-
+       return chown_main(argc, argv);
 }
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/