X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=util-linux%2Ffreeramdisk.c;h=aabb5f98827641ed79ef3c6fa890f6a338c4158b;hb=ace02dc9cd3ca0c95db5b5ebe87b9d6cd6ca1733;hp=43d42d424fb8c84a2949d31d674bfe88aadbc3ca;hpb=a967e3c8f004d9d613e2f531a3bf7869f2e68b90;p=oweals%2Fbusybox.git

diff --git a/util-linux/freeramdisk.c b/util-linux/freeramdisk.c
index 43d42d424..aabb5f988 100644
--- a/util-linux/freeramdisk.c
+++ b/util-linux/freeramdisk.c
@@ -23,40 +23,35 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <sys/mount.h>
 #include <sys/types.h>
-#include <sys/stat.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <errno.h>
-#include "internal.h"
+#include <stdlib.h>
+#include "busybox.h"
 
 
-static const char freeramdisk_usage[] =
-	"freeramdisk DEVICE\n\n"
-	"Frees all memory used by the specified ramdisk.\n";
+/* From linux/fs.h */
+#define BLKFLSBUF  _IO(0x12,97)	/* flush buffer cache */
 
 extern int
 freeramdisk_main(int argc, char **argv)
 {
-	char  rname[256] = "/dev/ram";
-	int   f;
+	FILE *f;
 
-	if (argc > 2 || ( argv[1] && *argv[1] == '-')) {
-		usage(freeramdisk_usage);
+	if (argc != 2 || *argv[1] == '-') {
+		show_usage();
 	}
 
-	if (argc >1)
-		strcpy(rname, argv[1]);
-
-	if ((f = open(rname, O_RDWR)) == -1) {
-		fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
-	}
-	if (ioctl(f, BLKFLSBUF) < 0) {
-		fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
+	f = xfopen(argv[1], "r+");
+	
+	if (ioctl(fileno(f), BLKFLSBUF) < 0) {
+		perror_msg_and_die("failed ioctl on %s", argv[1]);
 	}
-	close(f);
-	exit(TRUE);
+	/* Don't bother closing.  Exit does
+	 * that, so we can save a few bytes */
+	/* close(f); */
+	return EXIT_SUCCESS;
 }
 
 /*