| 1 | /*
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| 2 | * volume_id - reads filesystem label and uuid
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| 3 | *
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| 4 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Lesser General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2.1 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public
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| 17 | * License along with this library; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 19 | */
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| 20 |
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| 21 | //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_HPFS) += hpfs.o
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| 22 |
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| 23 | //config:
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| 24 | //config:### config FEATURE_VOLUMEID_HPFS
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| 25 | //config:### bool "hpfs filesystem"
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| 26 | //config:### default y
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| 27 | //config:### depends on VOLUMEID
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| 28 | //config:### help
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| 29 | //config:### TODO
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| 30 | //config:
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| 31 |
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| 32 | #include "volume_id_internal.h"
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| 33 |
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| 34 | struct hpfs_super {
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| 35 | uint8_t magic[4];
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| 36 | uint8_t version;
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| 37 | } PACKED;
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| 38 |
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| 39 | #define HPFS_SUPERBLOCK_OFFSET 0x2000
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| 40 |
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| 41 | int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
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| 42 | {
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| 43 | struct hpfs_super *hs;
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| 44 |
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| 45 | dbg("probing at offset 0x%llx", (unsigned long long) off);
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| 46 |
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| 47 | hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
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| 48 | if (hs == NULL)
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| 49 | return -1;
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| 50 |
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| 51 | if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
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| 52 | // sprintf(id->type_version, "%u", hs->version);
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| 53 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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| 54 | // id->type = "hpfs";
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| 55 | return 0;
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| 56 | }
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| 57 |
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| 58 | return -1;
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| 59 | }
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