disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/fs/xfs/libxfs/xfs_dir2_priv.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0
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+/* 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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@@ -8,7 +8,41 @@
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8
 
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 struct dir_context;
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10
 
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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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+	/*
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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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+
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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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+	/*
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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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+
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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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@@ -26,6 +60,15 @@
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 		struct xfs_buf *lbp, struct xfs_buf *dbp);
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61
 
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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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+
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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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@@ -34,10 +77,10 @@
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77
 
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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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-extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
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-		xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
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-extern int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno,
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-		xfs_daddr_t mapped_bno);
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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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@@ -47,10 +90,14 @@
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 		struct xfs_buf **bpp);
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 /* xfs_dir2_leaf.c */
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-extern int xfs_dir3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
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-		xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
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-extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
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-		xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
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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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@@ -62,7 +109,8 @@
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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_buf *bp, int first, int last);
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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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@@ -79,10 +127,11 @@
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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_inode *dp, struct xfs_dir3_icleaf_hdr *hdr,
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-		struct xfs_dir2_leaf *leaf);
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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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@@ -108,6 +157,14 @@
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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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@@ -118,9 +175,33 @@
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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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+
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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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+
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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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+
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 #endif /* __XFS_DIR2_PRIV_H__ */