1/*
2 * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24#include <stdio.h>
25#include <string.h>
26#include <stdlib.h>
27#include <fcntl.h>
28#include <err.h>
29#include <unistd.h>
30
31#include "util.h"
32
33void
34doDestroy(const char *dev) {
35	int bs;
36	if (gVerbose) {
37		fprintf(stderr, "Destroying device %s", dev);
38	}
39
40	if (!IsAppleLabel(dev)) {
41		errx(4,"doDestroy:  device %s is not an Apple Label device", dev);
42	}
43
44	bs = GetBlockSize(dev);
45	if (bs != 0) {
46		int fd;
47		char bz[bs];
48		memset(bz, 0, bs);
49
50		fd = open(dev, O_WRONLY);
51		if (fd == -1) {
52			err(1, "doDestroy:  cannot open device %s for writing", dev);
53		}
54		if (write(fd, bz, bs) != bs) {
55			err(2, "doDestroy:  cannot write %d bytes onto device %s", bs, dev);
56		}
57		close(fd);
58	} else {
59		errx(3, "doDestroy:  cannot get blocksize for device %s", dev);
60	}
61}
62