chmod: support -vcf if CONFIG_DESKTOP

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

diff --git a/coreutils/chmod.c b/coreutils/chmod.c
index 390cc6d2c7b36b8d8e338677d510afaeeab95710..18334b8bbf20203018031a04a4f6530cf9179bba 100644 (file)
--- a/coreutils/chmod.c
+++ b/coreutils/chmod.c
@@ -2,111 +2,81 @@
 /*
  * Mini chmod implementation for busybox
  *
- * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
  * Reworked by (C) 2002 Vladimir Oleynik <dzo@simtreas.ru>
  *  to correctly parse '-rwxgoa'
  *
- * 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 tarball for details.
  */
 
 /* BB_AUDIT SUSv3 compliant */
-/* BB_AUDIT GNU defects - unsupported options -c, -f, -v, and long options. */
+/* BB_AUDIT GNU defects - unsupported long options. */
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chmod.html */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/stat.h>
 #include "busybox.h"
 
+#define OPT_RECURSE (option_mask32 & 1)
+#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 2) SKIP_DESKTOP(0))
+#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))
+#define OPT_QUIET   (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))
+#define OPT_STR     ("-R" USE_DESKTOP("vcf"))
+
 static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
 {
-       if (!bb_parse_mode((char *)junk, &(statbuf->st_mode)))
-               bb_error_msg_and_die( "invalid mode: %s", (char *)junk);
-       if (chmod(fileName, statbuf->st_mode) == 0)
-               return (TRUE);
-       bb_perror_msg("%s", fileName);  /* Avoid multibyte problems. */
-       return (FALSE);
+       mode_t newmode = statbuf->st_mode;
+       if (!bb_parse_mode((char *)junk, &newmode))
+               bb_error_msg_and_die("invalid mode: %s", (char *)junk);
+
+       if (chmod(fileName, statbuf->st_mode) == 0) {
+               if (OPT_VERBOSE /* -v verbose? or -c changed? */
+                || (OPT_CHANGED && statbuf->st_mode != newmode)
+               ) {
+                       printf("mode of '%s' changed to %04o (%s)\n", fileName,
+                               newmode & 7777, bb_mode_string(newmode)+1);
+               }
+               return TRUE;
+       }
+       if (!OPT_QUIET) /* not silent (-f)? */
+               bb_perror_msg("%s", fileName);
+       return FALSE;
 }
 
 int chmod_main(int argc, char **argv)
 {
        int retval = EXIT_SUCCESS;
-       int recursiveFlag = FALSE;
-       int count;
+       char *arg, **argp;
        char *smode;
-       char **p;
-       char *p0;
-       char opt = '-';
-
-       ++argv;
-       count = 0;
 
-       for (p = argv  ; *p ; p++) {
-               p0 = p[0];
-               if (p0[0] == opt) {
-                       if ((p0[1] == '-') && !p0[2]) {
-                               opt = 0;        /* Disable further option processing. */
-                               continue;
-                       }
-                       if (p0[1] == 'R') {
-                               char *s = p0 + 2;
-                               while (*s == 'R') {
-                                       ++s;
-                               }
-                               if (*s) {
-                                       bb_show_usage();
-                               }
-                               recursiveFlag = TRUE;
-                               continue;
-                       }
-                       if (count) {
-                               bb_show_usage();
-                       }
+       /* Convert first encountered -r into a-r, etc */
+       argp = argv + 1;
+       while ((arg = *argp)) {
+               /* Protect against mishandling e.g. "chmod 644 -r" */
+               if (arg[0] != '-')
+                       break;
+               /* An option. Not a -- or valid option? */
+               if (arg[1] && !strchr(OPT_STR, arg[1])) {
+                       argp[0] = xasprintf("a%s", arg);
+                       break;
                }
-               argv[count] = p0;
-               ++count;
+               argp++;
        }
+       /* "chmod -rzzz abc" will say "invalid mode: a-rzzz"!
+        * It is easily fixable, but deemed not worth the code */
 
-       argv[count] = NULL;
-
-       if (count < 2) {
-               bb_show_usage();
-       }
+       opt_complementary = "-2";
+       getopt32(argc, argv, OPT_STR + 1); /* Reuse string */
+       argv += optind;
 
-       smode = *argv;
-       ++argv;
+       smode = *argv++;
 
        /* Ok, ready to do the deed now */
        do {
-               if (! recursive_action (*argv, recursiveFlag, FALSE, FALSE,
-                                                               fileAction,     fileAction, smode)) {
+               if (!recursive_action(*argv, OPT_RECURSE, TRUE, FALSE,
+                                       fileAction, fileAction, smode)) {
                        retval = EXIT_FAILURE;
                }
        } while (*++argv);
 
        return retval;
 }
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/