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 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 38int 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} 76