diff options
Diffstat (limited to 'fs/xfs/xfs_attr_leaf.h')
| -rw-r--r-- | fs/xfs/xfs_attr_leaf.h | 79 |
1 files changed, 43 insertions, 36 deletions
diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h index f6143ff251a0..541e34109bb9 100644 --- a/fs/xfs/xfs_attr_leaf.h +++ b/fs/xfs/xfs_attr_leaf.h @@ -63,7 +63,7 @@ struct xfs_trans; * the leaf_entry. The namespaces are independent only because we also look * at the namespace bit when we are looking for a matching attribute name. * - * We also store a "incomplete" bit in the leaf_entry. It shows that an + * We also store an "incomplete" bit in the leaf_entry. It shows that an * attribute is in the middle of being created and should not be shown to * the user if we crash during the time that the bit is set. We clear the * bit when we have finished setting up the attribute. We do this because @@ -72,42 +72,48 @@ struct xfs_trans; */ #define XFS_ATTR_LEAF_MAPSIZE 3 /* how many freespace slots */ +typedef struct xfs_attr_leaf_map { /* RLE map of free bytes */ + __uint16_t base; /* base of free region */ + __uint16_t size; /* length of free region */ +} xfs_attr_leaf_map_t; + +typedef struct xfs_attr_leaf_hdr { /* constant-structure header block */ + xfs_da_blkinfo_t info; /* block type, links, etc. */ + __uint16_t count; /* count of active leaf_entry's */ + __uint16_t usedbytes; /* num bytes of names/values stored */ + __uint16_t firstused; /* first used byte in name area */ + __uint8_t holes; /* != 0 if blk needs compaction */ + __uint8_t pad1; + xfs_attr_leaf_map_t freemap[XFS_ATTR_LEAF_MAPSIZE]; + /* N largest free regions */ +} xfs_attr_leaf_hdr_t; + +typedef struct xfs_attr_leaf_entry { /* sorted on key, not name */ + xfs_dahash_t hashval; /* hash value of name */ + __uint16_t nameidx; /* index into buffer of name/value */ + __uint8_t flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ + __uint8_t pad2; /* unused pad byte */ +} xfs_attr_leaf_entry_t; + +typedef struct xfs_attr_leaf_name_local { + __uint16_t valuelen; /* number of bytes in value */ + __uint8_t namelen; /* length of name bytes */ + __uint8_t nameval[1]; /* name/value bytes */ +} xfs_attr_leaf_name_local_t; + +typedef struct xfs_attr_leaf_name_remote { + xfs_dablk_t valueblk; /* block number of value bytes */ + __uint32_t valuelen; /* number of bytes in value */ + __uint8_t namelen; /* length of name bytes */ + __uint8_t name[1]; /* name bytes */ +} xfs_attr_leaf_name_remote_t; + typedef struct xfs_attr_leafblock { - struct xfs_attr_leaf_hdr { /* constant-structure header block */ - xfs_da_blkinfo_t info; /* block type, links, etc. */ - __uint16_t count; /* count of active leaf_entry's */ - __uint16_t usedbytes; /* num bytes of names/values stored */ - __uint16_t firstused; /* first used byte in name area */ - __uint8_t holes; /* != 0 if blk needs compaction */ - __uint8_t pad1; - struct xfs_attr_leaf_map { /* RLE map of free bytes */ - __uint16_t base; /* base of free region */ - __uint16_t size; /* length of free region */ - } freemap[XFS_ATTR_LEAF_MAPSIZE]; /* N largest free regions */ - } hdr; - struct xfs_attr_leaf_entry { /* sorted on key, not name */ - xfs_dahash_t hashval; /* hash value of name */ - __uint16_t nameidx; /* index into buffer of name/value */ - __uint8_t flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ - __uint8_t pad2; /* unused pad byte */ - } entries[1]; /* variable sized array */ - struct xfs_attr_leaf_name_local { - __uint16_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t nameval[1]; /* name/value bytes */ - } namelist; /* grows from bottom of buf */ - struct xfs_attr_leaf_name_remote { - xfs_dablk_t valueblk; /* block number of value bytes */ - __uint32_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t name[1]; /* name bytes */ - } valuelist; /* grows from bottom of buf */ + xfs_attr_leaf_hdr_t hdr; /* constant-structure header block */ + xfs_attr_leaf_entry_t entries[1]; /* sorted on key, not name */ + xfs_attr_leaf_name_local_t namelist; /* grows from bottom of buf */ + xfs_attr_leaf_name_remote_t valuelist; /* grows from bottom of buf */ } xfs_attr_leafblock_t; -typedef struct xfs_attr_leaf_hdr xfs_attr_leaf_hdr_t; -typedef struct xfs_attr_leaf_map xfs_attr_leaf_map_t; -typedef struct xfs_attr_leaf_entry xfs_attr_leaf_entry_t; -typedef struct xfs_attr_leaf_name_local xfs_attr_leaf_name_local_t; -typedef struct xfs_attr_leaf_name_remote xfs_attr_leaf_name_remote_t; /* * Flags used in the leaf_entry[i].flags field. @@ -150,7 +156,8 @@ xfs_attr_leaf_name_local(xfs_attr_leafblock_t *leafp, int idx) (leafp))[INT_GET((leafp)->entries[idx].nameidx, ARCH_CONVERT)]; } -#define XFS_ATTR_LEAF_NAME(leafp,idx) xfs_attr_leaf_name(leafp,idx) +#define XFS_ATTR_LEAF_NAME(leafp,idx) \ + xfs_attr_leaf_name(leafp,idx) static inline char *xfs_attr_leaf_name(xfs_attr_leafblock_t *leafp, int idx) { return (&((char *) |
