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//config:### config FEATURE_VOLUMEID_VIARAID 21//config:### bool "via raid" 22//config:### default y 23//config:### depends on VOLUMEID 24 25//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_VIARAID) += via_raid.o 26 27#include "volume_id_internal.h" 28 29struct via_meta { 30 uint16_t signature; 31 uint8_t version_number; 32 struct via_array { 33 uint16_t disk_bits; 34 uint8_t disk_array_ex; 35 uint32_t capacity_low; 36 uint32_t capacity_high; 37 uint32_t serial_checksum; 38 } PACKED array; 39 uint32_t serial_checksum[8]; 40 uint8_t checksum; 41} PACKED; 42 43#define VIA_SIGNATURE 0xAA55 44 45int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size) 46{ 47 uint64_t meta_off; 48 struct via_meta *via; 49 50 dbg("probing at offset 0x%llx, size 0x%llx", 51 (unsigned long long) off, (unsigned long long) size); 52 53 if (size < 0x10000) 54 return -1; 55 56 meta_off = ((size / 0x200)-1) * 0x200; 57 58 via = volume_id_get_buffer(id, off + meta_off, 0x200); 59 if (via == NULL) 60 return -1; 61 62 if (via->signature != cpu_to_le16(VIA_SIGNATURE)) 63 return -1; 64 65 if (via->version_number > 1) 66 return -1; 67 68// volume_id_set_usage(id, VOLUME_ID_RAID); 69// id->type_version[0] = '0' + via->version_number; 70// id->type_version[1] = '\0'; 71// id->type = "via_raid_member"; 72 73 return 0; 74} 75