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[t2-trunk.git] / package / base / util-linux / freeramdisk.c
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1 /*
2 * --- T2-COPYRIGHT-NOTE-BEGIN ---
3 * This copyright note is auto-generated by ./scripts/Create-CopyPatch.
4 *
5 * T2 SDE: package/.../util-linux/freeramdisk.c
6 * Copyright (C) 2004 - 2006 The T2 SDE Project
7 *
8 * More information can be found in the files COPYING and README.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License. A copy of the
13 * GNU General Public License can be found in the file COPYING.
14 * --- T2-COPYRIGHT-NOTE-END ---
16 #include <stdio.h>
17 #include <string.h>
18 #include <sys/mount.h>
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <fcntl.h>
22 #include <unistd.h>
23 #include <sys/ioctl.h>
24 #include <errno.h>
26 int main(int argc, char **argv)
28 int c, f, rc=0;
30 if (argc == 1) {
31 fprintf(stderr,"Usage: %s /dev/rd/initrd "
32 "[ /dev/rd/12 [ .. ] ]\n", argv[0]);
33 return 1;
36 for (c=1; c < argc; c++) {
37 if ((f=open(argv[c], O_RDWR)) == -1) {
38 fprintf(stderr, "freeramdisk: cannot open %s: %s\n",
39 argv[c], strerror(errno));
40 rc++;
41 } else {
42 ioctl(f, BLKFLSBUF);
43 close(f);
46 return rc;