1 /*
2 * volume_id - reads filesystem label and uuid
3 *
4 * Copyright (C) 2004 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 //config:config FEATURE_VOLUMEID_ROMFS
21 //config: bool "romfs filesystem"
22 //config: default y
23 //config: depends on VOLUMEID
24
25 //kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_ROMFS) += romfs.o
26
27 #include "volume_id_internal.h"
28
29 struct romfs_super {
30 uint8_t magic[8];
31 uint32_t size;
32 uint32_t checksum;
33 uint8_t name[];
34 } PACKED;
35
volume_id_probe_romfs(struct volume_id * id)36 int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/)
37 {
38 #define off ((uint64_t)0)
39 struct romfs_super *rfs;
40
41 dbg("probing at offset 0x%llx", (unsigned long long) off);
42
43 rfs = volume_id_get_buffer(id, off, 0x200);
44 if (rfs == NULL)
45 return -1;
46
47 if (memcmp(rfs->magic, "-rom1fs-", 4) == 0) {
48 size_t len = strlen((char *)rfs->name);
49
50 if (len) {
51 // volume_id_set_label_raw(id, rfs->name, len);
52 volume_id_set_label_string(id, rfs->name, len);
53 }
54
55 // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
56 IF_FEATURE_BLKID_TYPE(id->type = "romfs";)
57 return 0;
58 }
59
60 return -1;
61 }
62