diff options
Diffstat (limited to 'usr/kinit/fstype/ocfs2_fs.h')
| -rw-r--r-- | usr/kinit/fstype/ocfs2_fs.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/usr/kinit/fstype/ocfs2_fs.h b/usr/kinit/fstype/ocfs2_fs.h new file mode 100644 index 0000000..b71cb61 --- /dev/null +++ b/usr/kinit/fstype/ocfs2_fs.h @@ -0,0 +1,90 @@ +#ifndef _OCFS2_FS_H +#define _OCFS2_FS_H + +/* Object signatures */ +#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2" + +#define OCFS2_VOL_UUID_LEN 16 +#define OCFS2_MAX_VOL_LABEL_LEN 64 + +/* + * On disk superblock for OCFS2 + * Note that it is contained inside an ocfs2_dinode, so all offsets + * are relative to the start of ocfs2_dinode.id2. + */ +struct ocfs2_super_block { +/*00*/ uint16_t s_major_rev_level; + uint16_t s_minor_rev_level; + uint16_t s_mnt_count; + int16_t s_max_mnt_count; + uint16_t s_state; /* File system state */ + uint16_t s_errors; /* Behaviour when detecting errors */ + uint32_t s_checkinterval; /* Max time between checks */ +/*10*/ uint64_t s_lastcheck; /* Time of last check */ + uint32_t s_creator_os; /* OS */ + uint32_t s_feature_compat; /* Compatible feature set */ +/*20*/ uint32_t s_feature_incompat; /* Incompatible feature set */ + uint32_t s_feature_ro_compat; /* Readonly-compatible feature set */ + uint64_t s_root_blkno; /* Offset, in blocks, of root directory + dinode */ +/*30*/ uint64_t s_system_dir_blkno; /* Offset, in blocks, of system + directory dinode */ + uint32_t s_blocksize_bits; /* Blocksize for this fs */ + uint32_t s_clustersize_bits; /* Clustersize for this fs */ +/*40*/ uint16_t s_max_slots; /* Max number of simultaneous mounts + before tunefs required */ + uint16_t s_reserved1; + uint32_t s_reserved2; + uint64_t s_first_cluster_group; /* Block offset of 1st cluster + * group header */ +/*50*/ uint8_t s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */ +/*90*/ uint8_t s_uuid[OCFS2_VOL_UUID_LEN]; /* 128-bit uuid */ +/*A0*/ +} __attribute__ ((packed)); + +/* + * On disk inode for OCFS2 + */ +struct ocfs2_dinode { +/*00*/ uint8_t i_signature[8]; /* Signature for validation */ + uint32_t i_generation; /* Generation number */ + uint16_t i_suballoc_slot; /* Slot suballocator this inode + belongs to */ + int16_t i_suballoc_bit; /* Bit offset in suballocator + block group */ +/*10*/ uint32_t i_reserved0; + uint32_t i_clusters; /* Cluster count */ + uint32_t i_uid; /* Owner UID */ + uint32_t i_gid; /* Owning GID */ +/*20*/ uint64_t i_size; /* Size in bytes */ + uint16_t i_mode; /* File mode */ + uint16_t i_links_count; /* Links count */ + uint32_t i_flags; /* File flags */ +/*30*/ uint64_t i_atime; /* Access time */ + uint64_t i_ctime; /* Creation time */ +/*40*/ uint64_t i_mtime; /* Modification time */ + uint64_t i_dtime; /* Deletion time */ +/*50*/ uint64_t i_blkno; /* Offset on disk, in blocks */ + uint64_t i_last_eb_blk; /* Pointer to last extent + block */ +/*60*/ uint32_t i_fs_generation; /* Generation per fs-instance */ + uint32_t i_atime_nsec; + uint32_t i_ctime_nsec; + uint32_t i_mtime_nsec; + uint32_t i_attr; + uint16_t i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL + was set in i_flags */ + uint16_t i_reserved1; +/*70*/ uint64_t i_reserved2[8]; +/*B8*/ uint64_t i_pad1; + uint64_t i_rdev; /* Device number */ + uint32_t i_used; /* Bits (ie, clusters) used */ + uint32_t i_total; /* Total bits (clusters) + available */ + uint32_t ij_flags; /* Mounted, version, etc. */ + uint32_t ij_pad; +/*C0*/ struct ocfs2_super_block i_super; +/* Actual on-disk size is one block */ +} __attribute__ ((packed)); + +#endif /* _OCFS2_FS_H */ |