]>
Commit | Line | Data |
---|---|---|
9a9dab36 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au> | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | * | |
29 | * Added by Dale Stephenson | |
30 | * steph@snapserver.com | |
31 | */ | |
32 | ||
33 | #include "mdadm.h" | |
34 | #include "md_u.h" | |
35 | #include "md_p.h" | |
36 | ||
37 | int Kill(char *dev, int force) | |
38 | { | |
39 | /* | |
40 | * Nothing fancy about Kill. It just zeroes out a superblock | |
41 | * Definitely not safe. | |
42 | */ | |
43 | ||
4b1ac34b | 44 | void *super; |
9a9dab36 | 45 | int fd, rv = 0; |
82d9eba6 | 46 | struct supertype *st; |
9a9dab36 | 47 | |
d7eaf49f | 48 | fd = open(dev, O_RDWR|O_EXCL); |
9a9dab36 NB |
49 | if (fd < 0) { |
50 | fprintf(stderr, Name ": Couldn't open %s for write - not zeroing\n", | |
51 | dev); | |
52 | return 1; | |
f9ce90ba | 53 | } |
82d9eba6 NB |
54 | st = guess_super(fd); |
55 | if (st == NULL) { | |
f9ce90ba NB |
56 | fprintf(stderr, Name ": Unrecognised md component device - %s\n", dev); |
57 | return 1; | |
58 | } | |
82d9eba6 | 59 | rv = st->ss->load_super(st, fd, &super, dev); |
4b1ac34b | 60 | if (force && rv >= 2) |
9a9dab36 | 61 | rv = 0; /* ignore bad data in superblock */ |
4b1ac34b | 62 | if (rv== 0 || (force && rv >= 2)) { |
f9ce90ba NB |
63 | mdu_array_info_t info; |
64 | info.major_version = -1; /* zero superblock */ | |
65 | free(super); | |
96395475 NB |
66 | st->ss->init_super(st, &super, &info); |
67 | if (st->ss->store_super(st, fd, super)) { | |
9a9dab36 NB |
68 | fprintf(stderr, Name ": Could not zero superblock on %s\n", |
69 | dev); | |
70 | rv = 1; | |
4b1ac34b NB |
71 | } else if (rv) { |
72 | fprintf(stderr, Name ": superblock zeroed anyway\n"); | |
73 | rv = 0; | |
9a9dab36 NB |
74 | } |
75 | } | |
76 | close(fd); | |
77 | return rv; | |
78 | } |