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 23struct hpfs_super { 24 uint8_t magic[4]; 25 uint8_t version; 26} PACKED; 27 28#define HPFS_SUPERBLOCK_OFFSET 0x2000 29 30int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id, uint64_t off) 31{ 32 struct hpfs_super *hs; 33 34 dbg("probing at offset 0x%llx", (unsigned long long) off); 35 36 hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200); 37 if (hs == NULL) 38 return -1; 39 40 if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) { 41// sprintf(id->type_version, "%u", hs->version); 42// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); 43// id->type = "hpfs"; 44 return 0; 45 } 46 47 return -1; 48} 49