2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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.
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.
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
21 #include "volume_id_internal.h"
23 struct swap_header_v1_2
{
24 uint8_t bootbits
[1024];
29 uint8_t volume_name
[16];
32 #define LARGEST_PAGESIZE 0x4000
34 int FAST_FUNC
volume_id_probe_linux_swap(struct volume_id
*id
/*,uint64_t off*/)
36 #define off ((uint64_t)0)
37 struct swap_header_v1_2
*sw
;
41 dbg("probing at offset 0x%llx", (unsigned long long) off
);
43 /* the swap signature is at the end of the PAGE_SIZE */
44 for (page
= 0x1000; page
<= LARGEST_PAGESIZE
; page
<<= 1) {
45 buf
= volume_id_get_buffer(id
, off
+ page
-10, 10);
49 if (memcmp(buf
, "SWAP-SPACE", 10) == 0) {
50 // id->type_version[0] = '1';
51 // id->type_version[1] = '\0';
55 if (memcmp(buf
, "SWAPSPACE2", 10) == 0
56 || memcmp(buf
, "S1SUSPEND", 9) == 0
57 || memcmp(buf
, "S2SUSPEND", 9) == 0
58 || memcmp(buf
, "ULSUSPEND", 9) == 0
60 sw
= volume_id_get_buffer(id
, off
, sizeof(struct swap_header_v1_2
));
63 // id->type_version[0] = '2';
64 // id->type_version[1] = '\0';
65 // volume_id_set_label_raw(id, sw->volume_name, 16);
66 volume_id_set_label_string(id
, sw
->volume_name
, 16);
67 volume_id_set_uuid(id
, sw
->uuid
, UUID_DCE
);
74 // volume_id_set_usage(id, VOLUME_ID_OTHER);
75 IF_FEATURE_BLKID_TYPE(id
->type
= "swap";)