*: make GNU licensing statement forms more regular

[platform/upstream/busybox.git] / modutils / rmmod.c

diff --git a/modutils/rmmod.c b/modutils/rmmod.c
index d017253..aa1bb01 100644 (file)
--- a/modutils/rmmod.c
+++ b/modutils/rmmod.c
@@ -2,73 +2,52 @@
 /*
  * Mini rmmod implementation for busybox
  *
- * Copyright (C) 1999,2000 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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 2008 Timo Teras <timo.teras@iki.fi>
  *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
-#include "internal.h"
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/syscall.h>
-
-
-
-/* And the system call of the day is...  */
-_syscall1(int, delete_module, const char *, name)
+#include "libbb.h"
+#include "modutils.h"
 
-
-static const char rmmod_usage[] =
-       "rmmod [OPTION]... [MODULE]...\n\n"
-       "Unloads the specified kernel modules from the kernel.\n\n"
-
-       "Options:\n" "\t-a\tTry to remove all unused kernel modules.\n";
-
-
-
-extern int rmmod_main(int argc, char **argv)
+int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int rmmod_main(int argc UNUSED_PARAM, char **argv)
 {
-       if (argc <= 1) {
-               usage(rmmod_usage);
+       int n;
+       unsigned flags = O_NONBLOCK | O_EXCL;
+
+       /* Parse command line. */
+       n = getopt32(argv, "wfas"); // -s ignored
+       argv += optind;
+       if (n & 1)      // --wait
+               flags &= ~O_NONBLOCK;
+       if (n & 2)      // --force
+               flags |= O_TRUNC;
+       if (n & 4) {
+               /* Unload _all_ unused modules via NULL delete_module() call */
+               if (bb_delete_module(NULL, flags) != 0 && errno != EFAULT)
+                       bb_perror_msg_and_die("rmmod");
+               return EXIT_SUCCESS;
        }
 
-       /* Parse any options */
-       while (--argc > 0 && **(++argv) == '-') {
-               while (*(++(*argv))) {
-                       switch (**argv) {
-                       case 'a':
-                               /* Unload _all_ unused modules via NULL delete_module() call */
-                               if (delete_module(NULL)) {
-                                       perror("rmmod");
-                                       exit(FALSE);
-                               }
-                               exit(TRUE);
-                       default:
-                               usage(rmmod_usage);
-                       }
-               }
+       if (!*argv)
+               bb_show_usage();
+
+       n = ENABLE_FEATURE_2_4_MODULES && get_linux_version_code() < KERNEL_VERSION(2,6,0);
+       while (*argv) {
+               char modname[MODULE_NAME_LEN];
+               const char *bname;
+
+               bname = bb_basename(*argv++);
+               if (n)
+                       safe_strncpy(modname, bname, MODULE_NAME_LEN);
+               else
+                       filename2modname(bname, modname);
+               if (bb_delete_module(modname, flags))
+                       bb_error_msg_and_die("can't unload '%s': %s",
+                                            modname, moderror(errno));
        }
 
-       while (argc-- > 0) {
-               if (delete_module(*argv) < 0) {
-                       perror(*argv);
-               }
-               argv++;
-       }
-       exit(TRUE);
+       return EXIT_SUCCESS;
 }