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51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/*
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* volume_id - reads filesystem label and uuid
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*
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "volume_id_internal.h"
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struct hpfs_super
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{
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uint8_t magic[4];
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uint8_t version;
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} __attribute__((__packed__));
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#define HPFS_SUPERBLOCK_OFFSET 0x2000
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int volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
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{
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struct hpfs_super *hs;
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dbg("probing at offset 0x%llx", (unsigned long long) off);
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hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
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if (hs == NULL)
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return -1;
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if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
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sprintf(id->type_version, "%u", hs->version);
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volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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id->type = "hpfs";
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return 0;
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}
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return -1;
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}
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