X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=freeramdisk.c;h=cf25fae6abb61f6d0cf27ff0a0aa29ab039c1ab3;hb=ce4a586edb6abd90c1036666159f831bd2a58895;hp=4106cf1444724e2adfa02403872d3e9a924a031d;hpb=7ab9c7ee52db8759d457819f5480378fa3aa97cc;p=oweals%2Fbusybox.git

diff --git a/freeramdisk.c b/freeramdisk.c
index 4106cf144..cf25fae6a 100644
--- a/freeramdisk.c
+++ b/freeramdisk.c
@@ -23,46 +23,36 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <linux/fs.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"
-#ifndef BB_FEATURE_TRIVIAL_HELP
-	"\nFrees all memory used by the specified ramdisk.\n"
-#endif
-	;
+/* 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;
 
-	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\n", rname, strerror(errno));
+	if ((f = open(argv[1], O_RDWR)) == -1) {
+		perror_msg_and_die("cannot open %s", argv[1]);
 	}
 	if (ioctl(f, BLKFLSBUF) < 0) {
-		fatalError( "freeramdisk: failed ioctl on %s: %s\n", rname, strerror(errno));
+		perror_msg_and_die("failed ioctl on %s", argv[1]);
 	}
 	/* Don't bother closing.  Exit does
 	 * that, so we can save a few bytes */
 	/* close(f); */
-	exit(TRUE);
+	return EXIT_SUCCESS;
 }
 
 /*