Make cp and mv optionally preserve hard links.

[oweals/busybox.git] / util-linux / freeramdisk.c

diff --git a/util-linux/freeramdisk.c b/util-linux/freeramdisk.c
index 927c16946b62eaf434705abdb4921b0a7c3a7f42..aabb5f98827641ed79ef3c6fa890f6a338c4158b 100644 (file)
--- a/util-linux/freeramdisk.c
+++ b/util-linux/freeramdisk.c
@@ -24,43 +24,34 @@
 #include <stdio.h>
 #include <string.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"
 
 
 /* From linux/fs.h */
 #define BLKFLSBUF  _IO(0x12,97)        /* flush buffer cache */
 
-
-static const char freeramdisk_usage[] =
-       "freeramdisk DEVICE\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
-       "\nFrees all memory used by the specified ramdisk.\n"
-#endif
-       ;
-
 extern int
 freeramdisk_main(int argc, char **argv)
 {
-       int   f;
+       FILE *f;
 
        if (argc != 2 || *argv[1] == '-') {
-               usage(freeramdisk_usage);
+               show_usage();
        }
 
-       if ((f = open(argv[1], O_RDWR)) == -1) {
-               fatalError( "cannot open %s: %s\n", argv[1], strerror(errno));
-       }
-       if (ioctl(f, BLKFLSBUF) < 0) {
-               fatalError( "failed ioctl on %s: %s\n", argv[1], strerror(errno));
+       f = xfopen(argv[1], "r+");
+       
+       if (ioctl(fileno(f), BLKFLSBUF) < 0) {
+               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); */
-       return(TRUE);
+       return EXIT_SUCCESS;
 }
 
 /*