diff options
Diffstat (limited to 'part.h')
| -rw-r--r-- | part.h | 79 |
1 files changed, 79 insertions, 0 deletions
@@ -0,0 +1,79 @@ +/* + * mdadm - manage Linux "md" devices aka RAID arrays. + * + * Copyright (C) 2010 Neil Brown <neilb@suse.de> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Author: Neil Brown + * Email: <neil@brown.name> + * + */ + +/* Structure definitions ext for MBR and GPT partition tables + */ + +#define MBR_SIGNATURE_MAGIC __cpu_to_le16(0xAA55) +#define MBR_PARTITIONS 4 + +struct MBR_part_record { + __u8 bootable; + __u8 first_head; + __u8 first_sector; + __u8 first_cyl; + __u8 part_type; + __u8 last_head; + __u8 last_sector; + __u8 last_cyl; + __u32 first_sect_lba; + __u32 blocks_num; +} __attribute__((packed)); + +struct MBR { + __u8 pad[446]; + struct MBR_part_record parts[MBR_PARTITIONS]; + __u16 magic; +} __attribute__((packed)); + +#define GPT_SIGNATURE_MAGIC __cpu_to_le64(0x5452415020494645ULL) +#define MBR_GPT_PARTITION_TYPE 0xEE + +struct GPT_part_entry { + unsigned char type_guid[16]; + unsigned char partition_guid[16]; + __u64 starting_lba; + __u64 ending_lba; + unsigned char attr_bits[8]; + unsigned char name[72]; +} __attribute__((packed)); + +struct GPT { + __u64 magic; + __u32 revision; + __u32 header_size; + __u32 crc; + __u32 pad1; + __u64 current_lba; + __u64 backup_lba; + __u64 first_lba; + __u64 last_lba; + __u8 guid[16]; + __u64 part_start; + __u32 part_cnt; + __u32 part_size; + __u32 part_crc; + __u8 pad2[420]; +} __attribute__((packed)); |