Tito unified fdflush and freeramdisk. I tweaked the result a bit.

1 files changed, 9 insertions, 40 deletions

diff --git a/util-linux/freeramdisk.c b/util-linux/freeramdisk.c
index cfea35bea..b5449750a 100644
--- a/util-linux/freeramdisk.c
+++ b/util-linux/freeramdisk.c
@@ -1,24 +1,12 @@
 /* vi: set sw=4 ts=4: */
 /*
- * freeramdisk implementation for busybox
+ * freeramdisk and fdflush implementations for busybox
  *
  * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
  * Adjusted a bit by Erik Andersen <andersen@codepoet.org>
+ * Unified with fdflush by Tito Ragusa <farmatito@tiscali.it>
  *
- * 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.
  */
 
 #include <stdio.h>
@@ -30,40 +18,21 @@
 #include <unistd.h>
 #include "busybox.h"
 
-
-/* From linux/fs.h */
-#define BLKFLSBUF  _IO(0x12,97) /* flush buffer cache */
-
-extern int
-freeramdisk_main(int argc, char **argv)
+extern int freeramdisk_main(int argc, char **argv)
 {
         int result;
         int fd;
 
-        if (argc != 2) {
-                bb_show_usage();
-        }
+        if (argc != 2) bb_show_usage();
 
         fd = bb_xopen(argv[1], O_RDWR);
 
-        result = ioctl(fd, BLKFLSBUF);
+        // Act like freeramdisk, fdflush, or both depending on configuration.
+        result = ioctl(fd, (bb_applet_name[1]=='r' && ENABLE_FREERAMDISK)
+                        || !ENABLE_FDFLUSH ? _IO(0x12,97) : _IO(2,0x4b));
 
         if (ENABLE_FEATURE_CLEAN_UP) close(fd);
 
-        if (result < 0) {
-                bb_perror_msg_and_die("failed ioctl on %s", argv[1]);
-        }
-
-        /* Don't bother closing.  Exit does
-         * that, so we can save a few bytes */
+        if (result) bb_perror_msg_and_die("%s", argv[1]);
         return EXIT_SUCCESS;
 }
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
-