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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2019-07-05 13:16:12 -0700 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2019-07-07 16:19:18 +0200 |
| commit | c2464d3c53587eeca4d3efe77de3590cda41be10 (patch) | |
| tree | 638db70ab8a1f532e01189ef4ffc47b4a8caa0dc | |
| parent | 39c076f1e0b34aef0fc6978970ca17bca364282d (diff) | |
| download | palo-c2464d3c53587eeca4d3efe77de3590cda41be10.tar.gz | |
iplboot: update the ext2_fs.h header
A lot has changed in libext2fs since this header was last imported,
but most of it is irrelevant to simply reading files from ext2/3, so
only import the additional changes absolutely necessary for reading
from an ext4 filesystem.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Helge Deller <deller@gmx.de>
| -rw-r--r-- | ipl/ext2_fs.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/ipl/ext2_fs.h b/ipl/ext2_fs.h index 2d1db8f..f104880 100644 --- a/ipl/ext2_fs.h +++ b/ipl/ext2_fs.h @@ -504,7 +504,7 @@ struct ext2_super_block { __u32 s_hash_seed[4]; /* HTREE hash seed */ __u8 s_def_hash_version; /* Default hash version to use */ __u8 s_jnl_backup_type; /* Default type of journal backup */ - __u16 s_reserved_word_pad; + __u16 s_desc_size; __u32 s_default_mount_opts; __u32 s_first_meta_bg; /* First metablock group */ __u32 s_mkfs_time; /* When the filesystem was created */ @@ -565,6 +565,8 @@ struct ext2_super_block { #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 #define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040 +#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 + #define EXT2_FEATURE_COMPAT_SUPP 0 @@ -643,4 +645,42 @@ struct ext2_dir_entry_2 { #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ ~EXT2_DIR_ROUND) +/* from here we have additional structures from ext3_extents.h */ + +/* + * this is extent on-disk structure + * it's used at the bottom of the tree + */ +struct ext3_extent { + __le32 ee_block; /* first logical block extent covers */ + __le16 ee_len; /* number of blocks covered by extent */ + __le16 ee_start_hi; /* high 16 bits of physical block */ + __le32 ee_start; /* low 32 bigs of physical block */ +}; + +/* + * this is index on-disk structure + * it's used at all the levels, but the bottom + */ +struct ext3_extent_idx { + __le32 ei_block; /* index covers logical blocks from 'block' */ + __le32 ei_leaf; /* pointer to the physical block of the next * + * level. leaf or next index could bet here */ + __le16 ei_leaf_hi; /* high 16 bits of physical block */ + __le16 ei_unused; +}; + +/* + * each block (leaves and indexes), even inode-stored has header + */ +struct ext3_extent_header { + __le16 eh_magic; /* probably will support different formats */ + __le16 eh_entries; /* number of valid entries */ + __le16 eh_max; /* capacity of store in entries */ + __le16 eh_depth; /* has tree real underlying blocks? */ + __le32 eh_generation; /* generation of the tree */ +}; + +#define EXT3_EXT_MAGIC 0xf30a + #endif /* _LINUX_EXT2_FS_H */ |