Contents of /trunk/mkinitrd-magellan/busybox/util-linux/volume_id/unused_promise_raid.c
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Fri Apr 24 18:33:46 2009 UTC (15 years, 1 month ago) by niro
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Fri Apr 24 18:33:46 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1807 byte(s)
-updated to busybox-1.13.4
1 | /* |
2 | * volume_id - reads filesystem label and uuid |
3 | * |
4 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2.1 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with this library; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | #include "volume_id_internal.h" |
22 | |
23 | struct promise_meta { |
24 | uint8_t sig[24]; |
25 | } __attribute__((packed)); |
26 | |
27 | #define PDC_CONFIG_OFF 0x1200 |
28 | #define PDC_SIGNATURE "Promise Technology, Inc." |
29 | |
30 | int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size) |
31 | { |
32 | static const unsigned short sectors[] = { |
33 | 63, 255, 256, 16, 399 |
34 | }; |
35 | |
36 | struct promise_meta *pdc; |
37 | unsigned i; |
38 | |
39 | dbg("probing at offset 0x%llx, size 0x%llx", |
40 | (unsigned long long) off, (unsigned long long) size); |
41 | |
42 | if (size < 0x40000) |
43 | return -1; |
44 | |
45 | for (i = 0; i < ARRAY_SIZE(sectors); i++) { |
46 | uint64_t meta_off; |
47 | |
48 | meta_off = ((size / 0x200) - sectors[i]) * 0x200; |
49 | pdc = volume_id_get_buffer(id, off + meta_off, 0x200); |
50 | if (pdc == NULL) |
51 | return -1; |
52 | |
53 | if (memcmp(pdc->sig, PDC_SIGNATURE, sizeof(PDC_SIGNATURE)-1) == 0) |
54 | goto found; |
55 | } |
56 | return -1; |
57 | |
58 | found: |
59 | // volume_id_set_usage(id, VOLUME_ID_RAID); |
60 | // id->type = "promise_fasttrack_raid_member"; |
61 | |
62 | return 0; |
63 | } |