diff options
Diffstat (limited to 'util-linux/volume_id/romfs.c')
-rw-r--r-- | util-linux/volume_id/romfs.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/util-linux/volume_id/romfs.c b/util-linux/volume_id/romfs.c new file mode 100644 index 000000000..7c4fc0f70 --- /dev/null +++ b/util-linux/volume_id/romfs.c | |||
@@ -0,0 +1,54 @@ | |||
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 | |||
21 | #include "volume_id_internal.h" | ||
22 | |||
23 | struct romfs_super { | ||
24 | uint8_t magic[8]; | ||
25 | uint32_t size; | ||
26 | uint32_t checksum; | ||
27 | uint8_t name[0]; | ||
28 | } __attribute__((__packed__)); | ||
29 | |||
30 | int volume_id_probe_romfs(struct volume_id *id, uint64_t off) | ||
31 | { | ||
32 | struct romfs_super *rfs; | ||
33 | |||
34 | dbg("probing at offset 0x%llx", (unsigned long long) off); | ||
35 | |||
36 | rfs = volume_id_get_buffer(id, off, 0x200); | ||
37 | if (rfs == NULL) | ||
38 | return -1; | ||
39 | |||
40 | if (memcmp(rfs->magic, "-rom1fs-", 4) == 0) { | ||
41 | size_t len = strlen((char *)rfs->name); | ||
42 | |||
43 | if (len) { | ||
44 | volume_id_set_label_raw(id, rfs->name, len); | ||
45 | volume_id_set_label_string(id, rfs->name, len); | ||
46 | } | ||
47 | |||
48 | volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); | ||
49 | id->type = "romfs"; | ||
50 | return 0; | ||
51 | } | ||
52 | |||
53 | return -1; | ||
54 | } | ||