diff options
| -rw-r--r-- | fs/xfs/xfs_dir2_data.c | 15 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_data.h | 33 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_leaf.c | 6 |
3 files changed, 23 insertions, 31 deletions
diff --git a/fs/xfs/xfs_dir2_data.c b/fs/xfs/xfs_dir2_data.c index 2bbc216..8e47ac3 100644 --- a/fs/xfs/xfs_dir2_data.c +++ b/fs/xfs/xfs_dir2_data.c @@ -53,7 +53,6 @@ xfs_dir2_data_check( xfs_dir2_data_free_t *bf; /* bestfree table */ xfs_dir2_block_tail_t *btp=NULL; /* block tail */ int count; /* count of entries found */ - xfs_dir2_data_t *d; /* data block pointer */ xfs_dir2_data_hdr_t *hdr; /* data block header */ xfs_dir2_data_entry_t *dep; /* data entry */ xfs_dir2_data_free_t *dfp; /* bestfree entry */ @@ -70,10 +69,9 @@ xfs_dir2_data_check( struct xfs_name name; mp = dp->i_mount; - d = bp->data; - hdr = &d->hdr; + hdr = bp->data; bf = hdr->bestfree; - p = (char *)d->u; + p = (char *)(hdr + 1); if (be32_to_cpu(hdr->magic) == XFS_DIR2_BLOCK_MAGIC) { btp = xfs_dir2_block_tail_p(mp, hdr); @@ -336,7 +334,6 @@ xfs_dir2_data_freescan( xfs_dir2_data_hdr_t *hdr, /* data block header */ int *loghead) /* out: log data header */ { - xfs_dir2_data_t *d = (xfs_dir2_data_t *)hdr; xfs_dir2_block_tail_t *btp; /* block tail */ xfs_dir2_data_entry_t *dep; /* active data entry */ xfs_dir2_data_unused_t *dup; /* unused data entry */ @@ -355,7 +352,7 @@ xfs_dir2_data_freescan( /* * Set up pointers. */ - p = (char *)d->u; + p = (char *)(hdr + 1); if (be32_to_cpu(hdr->magic) == XFS_DIR2_BLOCK_MAGIC) { btp = xfs_dir2_block_tail_p(mp, hdr); endp = (char *)xfs_dir2_block_leaf_p(btp); @@ -398,7 +395,6 @@ xfs_dir2_data_init( xfs_dabuf_t **bpp) /* output block buffer */ { xfs_dabuf_t *bp; /* block buffer */ - xfs_dir2_data_t *d; /* pointer to block */ xfs_dir2_data_hdr_t *hdr; /* data block header */ xfs_inode_t *dp; /* incore directory inode */ xfs_dir2_data_unused_t *dup; /* unused entry pointer */ @@ -424,8 +420,7 @@ xfs_dir2_data_init( /* * Initialize the header. */ - d = bp->data; - hdr = &d->hdr; + hdr = bp->data; hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC); hdr->bestfree[0].offset = cpu_to_be16(sizeof(*hdr)); for (i = 1; i < XFS_DIR2_DATA_FD_COUNT; i++) { @@ -436,7 +431,7 @@ xfs_dir2_data_init( /* * Set up an unused entry for the block's body. */ - dup = &d->u[0].unused; + dup = (xfs_dir2_data_unused_t *)(hdr + 1); dup->freetag = cpu_to_be16(XFS_DIR2_DATA_FREE_TAG); t = mp->m_dirblksize - (uint)sizeof(*hdr); diff --git a/fs/xfs/xfs_dir2_data.h b/fs/xfs/xfs_dir2_data.h index aa6bf91c..ca02cc7 100644 --- a/fs/xfs/xfs_dir2_data.h +++ b/fs/xfs/xfs_dir2_data.h @@ -20,6 +20,22 @@ /* * Directory format 2, data block structures. + * + * A pure data block looks like the following drawing on disk: + * + * +-------------------------------------------------+ + * | xfs_dir2_data_hdr_t | + * +-------------------------------------------------+ + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | ... | + * +-------------------------------------------------+ + * | unused space | + * +-------------------------------------------------+ + * + * As all the entries are variable size structures the accessors in this + * file should be used to iterate over them. */ struct xfs_dabuf; @@ -103,23 +119,6 @@ typedef struct xfs_dir2_data_unused { __be16 tag; /* starting offset of us */ } xfs_dir2_data_unused_t; -typedef union { - xfs_dir2_data_entry_t entry; - xfs_dir2_data_unused_t unused; -} xfs_dir2_data_union_t; - -/* - * Generic data block structure, for xfs_db. - */ -typedef struct xfs_dir2_data { - xfs_dir2_data_hdr_t hdr; /* magic XFS_DIR2_DATA_MAGIC */ - xfs_dir2_data_union_t u[1]; -} xfs_dir2_data_t; - -/* - * Macros. - */ - /* * Size of a data entry. */ diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index d7b4d44..067a6ab 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -785,7 +785,6 @@ xfs_dir2_leaf_getdents( int byteoff; /* offset in current block */ xfs_dir2_db_t curdb; /* db for current block */ xfs_dir2_off_t curoff; /* current overall offset */ - xfs_dir2_data_t *data; /* data block structure */ xfs_dir2_data_hdr_t *hdr; /* data block header */ xfs_dir2_data_entry_t *dep; /* data entry */ xfs_dir2_data_unused_t *dup; /* unused entry */ @@ -1044,13 +1043,12 @@ xfs_dir2_leaf_getdents( else if (curoff > newoff) ASSERT(xfs_dir2_byte_to_db(mp, curoff) == curdb); - data = bp->data; - hdr = &data->hdr; + hdr = bp->data; xfs_dir2_data_check(dp, bp); /* * Find our position in the block. */ - ptr = (char *)&data->u; + ptr = (char *)(hdr + 1); byteoff = xfs_dir2_byte_to_off(mp, curoff); /* * Skip past the header. |
