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authorStefan Brüns <stefan.bruens@rwth-aachen.de>2016-09-17 03:10:06 +0300
committerDongjin Kim <tobetter@gmail.com>2020-02-10 16:44:41 +0300
commit851818665e1b4c667ab3706d99d855a4d802c9f6 (patch)
tree6519bd79d13dc9a0eb864128f06bc0706b4d18e1
parentb8be547b3d0c993ee03d32f14a0b05b8ead3a3ee (diff)
downloadu-boot-851818665e1b4c667ab3706d99d855a4d802c9f6.tar.xz
ext4: Update ext2/3/4 superblock, group descriptor and inode structures
Most importantly, the superblock provides the used group descriptor size, which is required for the EXT4_FEATURE_INCOMPAT_64BIT. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
-rw-r--r--include/ext_common.h50
1 files changed, 46 insertions, 4 deletions
diff --git a/include/ext_common.h b/include/ext_common.h
index 67a4e70d40..a7a6abc8fa 100644
--- a/include/ext_common.h
+++ b/include/ext_common.h
@@ -99,6 +99,33 @@ struct ext2_sblock {
char volume_name[16];
char last_mounted_on[64];
__le32 compression_info;
+ uint8_t prealloc_blocks;
+ uint8_t prealloc_dir_blocks;
+ __le16 reserved_gdt_blocks;
+ uint8_t journal_uuid[16];
+ __le32 journal_inode;
+ __le32 journal_dev;
+ __le32 last_orphan;
+ __le32 hash_seed[4];
+ uint8_t default_hash_version;
+ uint8_t journal_backup_type;
+ __le16 descriptor_size;
+ __le32 default_mount_options;
+ __le32 first_meta_block_group;
+ __le32 mkfs_time;
+ __le32 journal_blocks[17];
+ __le32 total_blocks_high;
+ __le32 reserved_blocks_high;
+ __le32 free_blocks_high;
+ __le16 min_extra_inode_size;
+ __le16 want_extra_inode_size;
+ __le32 flags;
+ __le16 raid_stride;
+ __le16 mmp_interval;
+ __le64 mmp_block;
+ __le32 raid_stripe_width;
+ uint8_t log2_groups_per_flex;
+ uint8_t checksum_type;
};
struct ext2_block_group {
@@ -109,9 +136,23 @@ struct ext2_block_group {
__le16 free_inodes; /* Free inodes count */
__le16 used_dir_cnt; /* Directories count */
__le16 bg_flags;
- __le32 bg_reserved[2];
+ __le32 bg_exclude_bitmap;
+ __le16 bg_block_id_csum;
+ __le16 bg_inode_id_csum;
__le16 bg_itable_unused; /* Unused inodes count */
- __le16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
+ __le16 bg_checksum; /* crc16(s_uuid+group_num+group_desc)*/
+ /* following fields only exist if descriptor size is 64 */
+ __le32 block_id_high;
+ __le32 inode_id_high;
+ __le32 inode_table_id_high;
+ __le16 free_blocks_high;
+ __le16 free_inodes_high;
+ __le16 used_dir_cnt_high;
+ __le16 bg_itable_unused_high;
+ __le32 bg_exclude_bitmap_high;
+ __le16 bg_block_id_csum_high;
+ __le16 bg_inode_id_csum_high;
+ __le32 bg_reserved;
};
/* The ext2 inode. */
@@ -125,7 +166,7 @@ struct ext2_inode {
__le32 dtime;
__le16 gid;
__le16 nlinks;
- __le32 blockcnt; /* Blocks of 512 bytes!! */
+ __le32 blockcnt; /* Blocks of either 512 or block_size bytes */
__le32 flags;
__le32 osd1;
union {
@@ -136,10 +177,11 @@ struct ext2_inode {
__le32 triple_indir_block;
} blocks;
char symlink[60];
+ char inline_data[60];
} b;
__le32 version;
__le32 acl;
- __le32 dir_acl;
+ __le32 size_high; /* previously dir_acl, but never used */
__le32 fragment_addr;
__le32 osd2[3];
};