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208 lines
8.2 KiB
208 lines
8.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
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* All Rights Reserved. |
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*/ |
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#ifndef __XFS_DIR2_PRIV_H__ |
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#define __XFS_DIR2_PRIV_H__ |
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struct dir_context; |
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/* |
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* In-core version of the leaf and free block headers to abstract the |
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* differences in the v2 and v3 disk format of the headers. |
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*/ |
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struct xfs_dir3_icleaf_hdr { |
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uint32_t forw; |
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uint32_t back; |
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uint16_t magic; |
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uint16_t count; |
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uint16_t stale; |
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/* |
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* Pointer to the on-disk format entries, which are behind the |
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* variable size (v4 vs v5) header in the on-disk block. |
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*/ |
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struct xfs_dir2_leaf_entry *ents; |
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}; |
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struct xfs_dir3_icfree_hdr { |
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uint32_t magic; |
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uint32_t firstdb; |
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uint32_t nvalid; |
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uint32_t nused; |
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/* |
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* Pointer to the on-disk format entries, which are behind the |
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* variable size (v4 vs v5) header in the on-disk block. |
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*/ |
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__be16 *bests; |
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}; |
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/* xfs_dir2.c */ |
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xfs_dahash_t xfs_ascii_ci_hashname(struct xfs_name *name); |
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enum xfs_dacmp xfs_ascii_ci_compname(struct xfs_da_args *args, |
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const unsigned char *name, int len); |
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extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, |
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xfs_dir2_db_t *dbp); |
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extern int xfs_dir_cilookup_result(struct xfs_da_args *args, |
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const unsigned char *name, int len); |
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/* xfs_dir2_block.c */ |
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extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp, |
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struct xfs_buf **bpp); |
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extern int xfs_dir2_block_addname(struct xfs_da_args *args); |
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extern int xfs_dir2_block_lookup(struct xfs_da_args *args); |
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extern int xfs_dir2_block_removename(struct xfs_da_args *args); |
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extern int xfs_dir2_block_replace(struct xfs_da_args *args); |
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extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, |
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struct xfs_buf *lbp, struct xfs_buf *dbp); |
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/* xfs_dir2_data.c */ |
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struct xfs_dir2_data_free *xfs_dir2_data_bestfree_p(struct xfs_mount *mp, |
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struct xfs_dir2_data_hdr *hdr); |
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__be16 *xfs_dir2_data_entry_tag_p(struct xfs_mount *mp, |
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struct xfs_dir2_data_entry *dep); |
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uint8_t xfs_dir2_data_get_ftype(struct xfs_mount *mp, |
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struct xfs_dir2_data_entry *dep); |
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void xfs_dir2_data_put_ftype(struct xfs_mount *mp, |
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struct xfs_dir2_data_entry *dep, uint8_t ftype); |
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#ifdef DEBUG |
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extern void xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp); |
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#else |
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#define xfs_dir3_data_check(dp,bp) |
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#endif |
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extern xfs_failaddr_t __xfs_dir3_data_check(struct xfs_inode *dp, |
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struct xfs_buf *bp); |
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int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp, |
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xfs_dablk_t bno, unsigned int flags, struct xfs_buf **bpp); |
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int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno, |
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unsigned int flags); |
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extern struct xfs_dir2_data_free * |
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xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr, |
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struct xfs_dir2_data_free *bf, struct xfs_dir2_data_unused *dup, |
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int *loghead); |
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extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, |
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struct xfs_buf **bpp); |
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/* xfs_dir2_leaf.c */ |
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void xfs_dir2_leaf_hdr_from_disk(struct xfs_mount *mp, |
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struct xfs_dir3_icleaf_hdr *to, struct xfs_dir2_leaf *from); |
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void xfs_dir2_leaf_hdr_to_disk(struct xfs_mount *mp, struct xfs_dir2_leaf *to, |
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struct xfs_dir3_icleaf_hdr *from); |
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int xfs_dir3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp, |
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xfs_dablk_t fbno, struct xfs_buf **bpp); |
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int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, |
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xfs_dablk_t fbno, struct xfs_buf **bpp); |
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extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, |
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struct xfs_buf *dbp); |
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extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); |
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extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, |
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struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp); |
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extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, |
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struct xfs_dir2_leaf_entry *ents, int *indexp, |
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int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); |
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extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, |
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struct xfs_buf **bpp, uint16_t magic); |
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extern void xfs_dir3_leaf_log_ents(struct xfs_da_args *args, |
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struct xfs_dir3_icleaf_hdr *hdr, struct xfs_buf *bp, int first, |
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int last); |
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extern void xfs_dir3_leaf_log_header(struct xfs_da_args *args, |
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struct xfs_buf *bp); |
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extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); |
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extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); |
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extern int xfs_dir2_leaf_replace(struct xfs_da_args *args); |
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extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, |
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struct xfs_buf *lbp); |
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extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, |
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struct xfs_buf *lbp, xfs_dir2_db_t db); |
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extern struct xfs_dir2_leaf_entry * |
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xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr, |
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struct xfs_dir2_leaf_entry *ents, int index, int compact, |
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int lowstale, int highstale, int *lfloglow, int *lfloghigh); |
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extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); |
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extern xfs_failaddr_t xfs_dir3_leaf_check_int(struct xfs_mount *mp, |
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struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf, |
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bool expensive_checks); |
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/* xfs_dir2_node.c */ |
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void xfs_dir2_free_hdr_from_disk(struct xfs_mount *mp, |
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struct xfs_dir3_icfree_hdr *to, struct xfs_dir2_free *from); |
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extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, |
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struct xfs_buf *lbp); |
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extern xfs_dahash_t xfs_dir2_leaf_lasthash(struct xfs_inode *dp, |
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struct xfs_buf *bp, int *count); |
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extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp, |
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struct xfs_da_args *args, int *indexp, |
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struct xfs_da_state *state); |
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extern int xfs_dir2_leafn_order(struct xfs_inode *dp, struct xfs_buf *leaf1_bp, |
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struct xfs_buf *leaf2_bp); |
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extern int xfs_dir2_leafn_split(struct xfs_da_state *state, |
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struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk); |
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extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); |
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extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state, |
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struct xfs_da_state_blk *drop_blk, |
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struct xfs_da_state_blk *save_blk); |
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extern int xfs_dir2_node_addname(struct xfs_da_args *args); |
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extern int xfs_dir2_node_lookup(struct xfs_da_args *args); |
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extern int xfs_dir2_node_removename(struct xfs_da_args *args); |
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extern int xfs_dir2_node_replace(struct xfs_da_args *args); |
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extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, |
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int *rvalp); |
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extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp, |
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xfs_dablk_t fbno, struct xfs_buf **bpp); |
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/* xfs_dir2_sf.c */ |
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xfs_ino_t xfs_dir2_sf_get_ino(struct xfs_mount *mp, struct xfs_dir2_sf_hdr *hdr, |
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struct xfs_dir2_sf_entry *sfep); |
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xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *hdr); |
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void xfs_dir2_sf_put_parent_ino(struct xfs_dir2_sf_hdr *hdr, xfs_ino_t ino); |
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uint8_t xfs_dir2_sf_get_ftype(struct xfs_mount *mp, |
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struct xfs_dir2_sf_entry *sfep); |
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struct xfs_dir2_sf_entry *xfs_dir2_sf_nextentry(struct xfs_mount *mp, |
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struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep); |
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extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, |
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struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp); |
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extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp, |
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int size, xfs_dir2_sf_hdr_t *sfhp); |
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extern int xfs_dir2_sf_addname(struct xfs_da_args *args); |
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extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); |
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extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); |
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extern int xfs_dir2_sf_removename(struct xfs_da_args *args); |
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extern int xfs_dir2_sf_replace(struct xfs_da_args *args); |
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extern xfs_failaddr_t xfs_dir2_sf_verify(struct xfs_inode *ip); |
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int xfs_dir2_sf_entsize(struct xfs_mount *mp, |
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struct xfs_dir2_sf_hdr *hdr, int len); |
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void xfs_dir2_sf_put_ino(struct xfs_mount *mp, struct xfs_dir2_sf_hdr *hdr, |
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struct xfs_dir2_sf_entry *sfep, xfs_ino_t ino); |
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void xfs_dir2_sf_put_ftype(struct xfs_mount *mp, |
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struct xfs_dir2_sf_entry *sfep, uint8_t ftype); |
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/* xfs_dir2_readdir.c */ |
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extern int xfs_readdir(struct xfs_trans *tp, struct xfs_inode *dp, |
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struct dir_context *ctx, size_t bufsize); |
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static inline unsigned int |
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xfs_dir2_data_entsize( |
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struct xfs_mount *mp, |
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unsigned int namelen) |
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{ |
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unsigned int len; |
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len = offsetof(struct xfs_dir2_data_entry, name[0]) + namelen + |
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sizeof(xfs_dir2_data_off_t) /* tag */; |
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if (xfs_has_ftype(mp)) |
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len += sizeof(uint8_t); |
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return round_up(len, XFS_DIR2_DATA_ALIGN); |
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} |
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xfs_dahash_t xfs_dir2_hashname(struct xfs_mount *mp, struct xfs_name *name); |
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enum xfs_dacmp xfs_dir2_compname(struct xfs_da_args *args, |
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const unsigned char *name, int len); |
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#endif /* __XFS_DIR2_PRIV_H__ */
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