diff options
Diffstat (limited to 'fs/xfs/xfs_dir2_priv.h')
| -rw-r--r-- | fs/xfs/xfs_dir2_priv.h | 247 |
1 files changed, 193 insertions, 54 deletions
diff --git a/fs/xfs/xfs_dir2_priv.h b/fs/xfs/xfs_dir2_priv.h index 067f403ecf8..27ce0794d19 100644 --- a/fs/xfs/xfs_dir2_priv.h +++ b/fs/xfs/xfs_dir2_priv.h @@ -18,91 +18,229 @@ #ifndef __XFS_DIR2_PRIV_H__ #define __XFS_DIR2_PRIV_H__ +struct dir_context; + +/* + * Directory offset/block conversion functions. + * + * DB blocks here are logical directory block numbers, not filesystem blocks. + */ + +/* + * Convert dataptr to byte in file space + */ +static inline xfs_dir2_off_t +xfs_dir2_dataptr_to_byte(xfs_dir2_dataptr_t dp) +{ + return (xfs_dir2_off_t)dp << XFS_DIR2_DATA_ALIGN_LOG; +} + +/* + * Convert byte in file space to dataptr. It had better be aligned. + */ +static inline xfs_dir2_dataptr_t +xfs_dir2_byte_to_dataptr(xfs_dir2_off_t by) +{ + return (xfs_dir2_dataptr_t)(by >> XFS_DIR2_DATA_ALIGN_LOG); +} + +/* + * Convert byte in space to (DB) block + */ +static inline xfs_dir2_db_t +xfs_dir2_byte_to_db(struct xfs_da_geometry *geo, xfs_dir2_off_t by) +{ + return (xfs_dir2_db_t)(by >> geo->blklog); +} + +/* + * Convert dataptr to a block number + */ +static inline xfs_dir2_db_t +xfs_dir2_dataptr_to_db(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp) +{ + return xfs_dir2_byte_to_db(geo, xfs_dir2_dataptr_to_byte(dp)); +} + +/* + * Convert byte in space to offset in a block + */ +static inline xfs_dir2_data_aoff_t +xfs_dir2_byte_to_off(struct xfs_da_geometry *geo, xfs_dir2_off_t by) +{ + return (xfs_dir2_data_aoff_t)(by & (geo->blksize - 1)); +} + +/* + * Convert dataptr to a byte offset in a block + */ +static inline xfs_dir2_data_aoff_t +xfs_dir2_dataptr_to_off(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp) +{ + return xfs_dir2_byte_to_off(geo, xfs_dir2_dataptr_to_byte(dp)); +} + +/* + * Convert block and offset to byte in space + */ +static inline xfs_dir2_off_t +xfs_dir2_db_off_to_byte(struct xfs_da_geometry *geo, xfs_dir2_db_t db, + xfs_dir2_data_aoff_t o) +{ + return ((xfs_dir2_off_t)db << geo->blklog) + o; +} + +/* + * Convert block (DB) to block (dablk) + */ +static inline xfs_dablk_t +xfs_dir2_db_to_da(struct xfs_da_geometry *geo, xfs_dir2_db_t db) +{ + return (xfs_dablk_t)(db << (geo->blklog - geo->fsblog)); +} + +/* + * Convert byte in space to (DA) block + */ +static inline xfs_dablk_t +xfs_dir2_byte_to_da(struct xfs_da_geometry *geo, xfs_dir2_off_t by) +{ + return xfs_dir2_db_to_da(geo, xfs_dir2_byte_to_db(geo, by)); +} + +/* + * Convert block and offset to dataptr + */ +static inline xfs_dir2_dataptr_t +xfs_dir2_db_off_to_dataptr(struct xfs_da_geometry *geo, xfs_dir2_db_t db, + xfs_dir2_data_aoff_t o) +{ + return xfs_dir2_byte_to_dataptr(xfs_dir2_db_off_to_byte(geo, db, o)); +} + +/* + * Convert block (dablk) to block (DB) + */ +static inline xfs_dir2_db_t +xfs_dir2_da_to_db(struct xfs_da_geometry *geo, xfs_dablk_t da) +{ + return (xfs_dir2_db_t)(da >> (geo->blklog - geo->fsblog)); +} + +/* + * Convert block (dablk) to byte offset in space + */ +static inline xfs_dir2_off_t +xfs_dir2_da_to_byte(struct xfs_da_geometry *geo, xfs_dablk_t da) +{ + return xfs_dir2_db_off_to_byte(geo, xfs_dir2_da_to_db(geo, da), 0); +} + +/* + * Directory tail pointer accessor functions. Based on block geometry. + */ +static inline struct xfs_dir2_block_tail * +xfs_dir2_block_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_data_hdr *hdr) +{ + return ((struct xfs_dir2_block_tail *) + ((char *)hdr + geo->blksize)) - 1; +} + +static inline struct xfs_dir2_leaf_tail * +xfs_dir2_leaf_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_leaf *lp) +{ + return (struct xfs_dir2_leaf_tail *) + ((char *)lp + geo->blksize - + sizeof(struct xfs_dir2_leaf_tail)); +} + /* xfs_dir2.c */ extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); -extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r); -extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r); extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, xfs_dir2_db_t *dbp); -extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, - struct xfs_dabuf *bp); extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const unsigned char *name, int len); +#define S_SHIFT 12 +extern const unsigned char xfs_mode_to_ftype[]; + +extern unsigned char xfs_dir3_get_dtype(struct xfs_mount *mp, + __uint8_t filetype); + + /* xfs_dir2_block.c */ +extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp, + struct xfs_buf **bpp); extern int xfs_dir2_block_addname(struct xfs_da_args *args); -extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); extern int xfs_dir2_block_lookup(struct xfs_da_args *args); extern int xfs_dir2_block_removename(struct xfs_da_args *args); extern int xfs_dir2_block_replace(struct xfs_da_args *args); extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, - struct xfs_dabuf *lbp, struct xfs_dabuf *dbp); + struct xfs_buf *lbp, struct xfs_buf *dbp); /* xfs_dir2_data.c */ #ifdef DEBUG -extern void xfs_dir2_data_check(struct xfs_inode *dp, struct xfs_dabuf *bp); +#define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp); #else -#define xfs_dir2_data_check(dp,bp) +#define xfs_dir3_data_check(dp,bp) #endif + +extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp); +extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp, + xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp); +extern int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno, + xfs_daddr_t mapped_bno); + extern struct xfs_dir2_data_free * xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr, - struct xfs_dir2_data_unused *dup, int *loghead); -extern void xfs_dir2_data_freescan(struct xfs_mount *mp, - struct xfs_dir2_data_hdr *hdr, int *loghead); -extern int xfs_dir2_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, - struct xfs_dabuf **bpp); -extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_dabuf *bp, - struct xfs_dir2_data_entry *dep); -extern void xfs_dir2_data_log_header(struct xfs_trans *tp, - struct xfs_dabuf *bp); -extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_dabuf *bp, - struct xfs_dir2_data_unused *dup); -extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_dabuf *bp, - xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len, - int *needlogp, int *needscanp); -extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_dabuf *bp, - struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset, - xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); + struct xfs_dir2_data_free *bf, struct xfs_dir2_data_unused *dup, + int *loghead); +extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, + struct xfs_buf **bpp); /* xfs_dir2_leaf.c */ +extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, + xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp); extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, - struct xfs_dabuf *dbp); + struct xfs_buf *dbp); extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); -extern void xfs_dir2_leaf_compact(struct xfs_da_args *args, - struct xfs_dabuf *bp); -extern void xfs_dir2_leaf_compact_x1(struct xfs_dabuf *bp, int *indexp, +extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, + struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp); +extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int *indexp, int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); -extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent, - size_t bufsize, xfs_off_t *offset, filldir_t filldir); -extern int xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno, - struct xfs_dabuf **bpp, int magic); -extern void xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_dabuf *bp, - int first, int last); -extern void xfs_dir2_leaf_log_header(struct xfs_trans *tp, - struct xfs_dabuf *bp); +extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, + struct xfs_buf **bpp, __uint16_t magic); +extern void xfs_dir3_leaf_log_ents(struct xfs_da_args *args, + struct xfs_buf *bp, int first, int last); +extern void xfs_dir3_leaf_log_header(struct xfs_da_args *args, + struct xfs_buf *bp); extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); extern int xfs_dir2_leaf_replace(struct xfs_da_args *args); extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, - struct xfs_dabuf *lbp); + struct xfs_buf *lbp); extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, - struct xfs_dabuf *lbp, xfs_dir2_db_t db); + struct xfs_buf *lbp, xfs_dir2_db_t db); extern struct xfs_dir2_leaf_entry * -xfs_dir2_leaf_find_entry(struct xfs_dir2_leaf *leaf, int index, int compact, - int lowstale, int highstale, - int *lfloglow, int *lfloghigh); +xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int index, int compact, + int lowstale, int highstale, int *lfloglow, int *lfloghigh); extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); +extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, struct xfs_inode *dp, + struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf); + /* xfs_dir2_node.c */ extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, - struct xfs_dabuf *lbp); -extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); -extern int xfs_dir2_leafn_lookup_int(struct xfs_dabuf *bp, + struct xfs_buf *lbp); +extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp, + struct xfs_buf *bp, int *count); +extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp, struct xfs_da_args *args, int *indexp, struct xfs_da_state *state); -extern int xfs_dir2_leafn_order(struct xfs_dabuf *leaf1_bp, - struct xfs_dabuf *leaf2_bp); +extern int xfs_dir2_leafn_order(struct xfs_inode *dp, struct xfs_buf *leaf1_bp, + struct xfs_buf *leaf2_bp); extern int xfs_dir2_leafn_split(struct xfs_da_state *state, struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk); extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); @@ -115,21 +253,22 @@ extern int xfs_dir2_node_removename(struct xfs_da_args *args); extern int xfs_dir2_node_replace(struct xfs_da_args *args); extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, int *rvalp); +extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp, + xfs_dablk_t fbno, struct xfs_buf **bpp); /* xfs_dir2_sf.c */ -extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp); -extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp, - struct xfs_dir2_sf_entry *sfep); extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp); -extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_dabuf *bp, +extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp, int size, xfs_dir2_sf_hdr_t *sfhp); extern int xfs_dir2_sf_addname(struct xfs_da_args *args); extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); -extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); extern int xfs_dir2_sf_removename(struct xfs_da_args *args); extern int xfs_dir2_sf_replace(struct xfs_da_args *args); +/* xfs_dir2_readdir.c */ +extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx, + size_t bufsize); + #endif /* __XFS_DIR2_PRIV_H__ */ |