| 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 minix_super_block {
|
|---|
| 24 | uint16_t s_ninodes;
|
|---|
| 25 | uint16_t s_nzones;
|
|---|
| 26 | uint16_t s_imap_blocks;
|
|---|
| 27 | uint16_t s_zmap_blocks;
|
|---|
| 28 | uint16_t s_firstdatazone;
|
|---|
| 29 | uint16_t s_log_zone_size;
|
|---|
| 30 | uint32_t s_max_size;
|
|---|
| 31 | uint16_t s_magic;
|
|---|
| 32 | uint16_t s_state;
|
|---|
| 33 | uint32_t s_zones;
|
|---|
| 34 | } PACKED;
|
|---|
| 35 |
|
|---|
| 36 | #define MINIX_SUPERBLOCK_OFFSET 0x400
|
|---|
| 37 |
|
|---|
| 38 | int FAST_FUNC volume_id_probe_minix(struct volume_id *id, uint64_t off)
|
|---|
| 39 | {
|
|---|
| 40 | struct minix_super_block *ms;
|
|---|
| 41 |
|
|---|
| 42 | dbg("probing at offset 0x%llx", (unsigned long long) off);
|
|---|
| 43 |
|
|---|
| 44 | ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
|
|---|
| 45 | if (ms == NULL)
|
|---|
| 46 | return -1;
|
|---|
| 47 |
|
|---|
| 48 | if (ms->s_magic == cpu_to_le16(0x137f)) {
|
|---|
| 49 | // id->type_version[0] = '1';
|
|---|
| 50 | goto found;
|
|---|
| 51 | }
|
|---|
| 52 |
|
|---|
| 53 | if (ms->s_magic == cpu_to_le16(0x1387)) {
|
|---|
| 54 | // id->type_version[0] = '1';
|
|---|
| 55 | goto found;
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | if (ms->s_magic == cpu_to_le16(0x2468)) {
|
|---|
| 59 | // id->type_version[0] = '2';
|
|---|
| 60 | goto found;
|
|---|
| 61 | }
|
|---|
| 62 |
|
|---|
| 63 | if (ms->s_magic == cpu_to_le16(0x2478)) {
|
|---|
| 64 | // id->type_version[0] = '2';
|
|---|
| 65 | goto found;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | return -1;
|
|---|
| 69 |
|
|---|
| 70 | found:
|
|---|
| 71 | // id->type_version[1] = '\0';
|
|---|
| 72 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
|
|---|
| 73 | // id->type = "minix";
|
|---|
| 74 | return 0;
|
|---|
| 75 | }
|
|---|
