mirror of https://gitee.com/openkylin/linux.git
208 lines
8.2 KiB
C
208 lines
8.2 KiB
C
// 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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/* 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_sb_version_hasftype(&mp->m_sb))
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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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