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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c 
 kernel/fs/xfs/libxfs/xfs_da_btree.h
....@@ -1,4 +1,4 @@
1
-// SPDX-License-Identifier: GPL-2.0
1
+/* SPDX-License-Identifier: GPL-2.0 */
22 /*
33  * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
44  * Copyright (c) 2013 Red Hat, Inc.
....@@ -10,7 +10,6 @@
1010 struct xfs_inode;
1111 struct xfs_trans;
1212 struct zone;
13
-struct xfs_dir_ops;
1413 
1514 /*
1615  * Directory/attribute geometry information. There will be one of these for each
....@@ -18,15 +17,23 @@
1817  * structures will be attached to the xfs_mount.
1918  */
2019 struct xfs_da_geometry {
21
-	int		blksize;	/* da block size in bytes */
22
-	int		fsbcount;	/* da block size in filesystem blocks */
20
+	unsigned int	blksize;	/* da block size in bytes */
21
+	unsigned int	fsbcount;	/* da block size in filesystem blocks */
2322 	uint8_t		fsblog;		/* log2 of _filesystem_ block size */
2423 	uint8_t		blklog;		/* log2 of da block size */
25
-	uint		node_ents;	/* # of entries in a danode */
26
-	int		magicpct;	/* 37% of block size in bytes */
24
+	unsigned int	node_hdr_size;	/* danode header size in bytes */
25
+	unsigned int	node_ents;	/* # of entries in a danode */
26
+	unsigned int	magicpct;	/* 37% of block size in bytes */
2727 	xfs_dablk_t	datablk;	/* blockno of dir data v2 */
28
+	unsigned int	leaf_hdr_size;	/* dir2 leaf header size */
29
+	unsigned int	leaf_max_ents;	/* # of entries in dir2 leaf */
2830 	xfs_dablk_t	leafblk;	/* blockno of leaf data v2 */
31
+	unsigned int	free_hdr_size;	/* dir2 free header size */
32
+	unsigned int	free_max_bests;	/* # of bests entries in dir2 free */
2933 	xfs_dablk_t	freeblk;	/* blockno of free data v2 */
34
+
35
+	xfs_dir2_data_aoff_t data_first_offset;
36
+	size_t		data_entry_offset;
3037 };
3138 
3239 /*========================================================================
....@@ -50,9 +57,10 @@
5057 	const uint8_t		*name;		/* string (maybe not NULL terminated) */
5158 	int		namelen;	/* length of string (maybe no NULL) */
5259 	uint8_t		filetype;	/* filetype of inode for directories */
53
-	uint8_t		*value;		/* set of bytes (maybe contain NULLs) */
60
+	void		*value;		/* set of bytes (maybe contain NULLs) */
5461 	int		valuelen;	/* length of value */
55
-	int		flags;		/* argument flags (eg: ATTR_NOCREATE) */
62
+	unsigned int	attr_filter;	/* XFS_ATTR_{ROOT,SECURE,INCOMPLETE} */
63
+	unsigned int	attr_flags;	/* XATTR_{CREATE,REPLACE} */
5664 	xfs_dahash_t	hashval;	/* hash value of name */
5765 	xfs_ino_t	inumber;	/* input/output inode number */
5866 	struct xfs_inode *dp;		/* directory inode to manipulate */
....@@ -81,13 +89,15 @@
8189 #define XFS_DA_OP_ADDNAME	0x0004	/* this is an add operation */
8290 #define XFS_DA_OP_OKNOENT	0x0008	/* lookup/add op, ENOENT ok, else die */
8391 #define XFS_DA_OP_CILOOKUP	0x0010	/* lookup to return CI name if found */
92
+#define XFS_DA_OP_NOTIME	0x0020	/* don't update inode timestamps */
8493 
8594 #define XFS_DA_OP_FLAGS \
8695 	{ XFS_DA_OP_JUSTCHECK,	"JUSTCHECK" }, \
8796 	{ XFS_DA_OP_RENAME,	"RENAME" }, \
8897 	{ XFS_DA_OP_ADDNAME,	"ADDNAME" }, \
8998 	{ XFS_DA_OP_OKNOENT,	"OKNOENT" }, \
90
-	{ XFS_DA_OP_CILOOKUP,	"CILOOKUP" }
99
+	{ XFS_DA_OP_CILOOKUP,	"CILOOKUP" }, \
100
+	{ XFS_DA_OP_NOTIME,	"NOTIME" }
91101 
92102 /*
93103  * Storage for holding state during Btree searches and split/join ops.
....@@ -123,22 +133,31 @@
123133 } xfs_da_state_t;
124134 
125135 /*
136
+ * In-core version of the node header to abstract the differences in the v2 and
137
+ * v3 disk format of the headers. Callers need to convert to/from disk format as
138
+ * appropriate.
139
+ */
140
+struct xfs_da3_icnode_hdr {
141
+	uint32_t		forw;
142
+	uint32_t		back;
143
+	uint16_t		magic;
144
+	uint16_t		count;
145
+	uint16_t		level;
146
+
147
+	/*
148
+	 * Pointer to the on-disk format entries, which are behind the
149
+	 * variable size (v4 vs v5) header in the on-disk block.
150
+	 */
151
+	struct xfs_da_node_entry *btree;
152
+};
153
+
154
+/*
126155  * Utility macros to aid in logging changed structure fields.
127156  */
128157 #define XFS_DA_LOGOFF(BASE, ADDR)	((char *)(ADDR) - (char *)(BASE))
129158 #define XFS_DA_LOGRANGE(BASE, ADDR, SIZE)	\
130159 		(uint)(XFS_DA_LOGOFF(BASE, ADDR)), \
131160 		(uint)(XFS_DA_LOGOFF(BASE, ADDR)+(SIZE)-1)
132
-
133
-/*
134
- * Name ops for directory and/or attr name operations
135
- */
136
-struct xfs_nameops {
137
-	xfs_dahash_t	(*hashname)(struct xfs_name *);
138
-	enum xfs_dacmp	(*compname)(struct xfs_da_args *,
139
-					const unsigned char *, int);
140
-};
141
-
142161 
143162 /*========================================================================
144163  * Function prototypes.
....@@ -170,25 +189,28 @@
170189 int	xfs_da3_blk_link(xfs_da_state_t *state, xfs_da_state_blk_t *old_blk,
171190 				       xfs_da_state_blk_t *new_blk);
172191 int	xfs_da3_node_read(struct xfs_trans *tp, struct xfs_inode *dp,
173
-			 xfs_dablk_t bno, xfs_daddr_t mappedbno,
174
-			 struct xfs_buf **bpp, int which_fork);
192
+			xfs_dablk_t bno, struct xfs_buf **bpp, int whichfork);
193
+int	xfs_da3_node_read_mapped(struct xfs_trans *tp, struct xfs_inode *dp,
194
+			xfs_daddr_t mappedbno, struct xfs_buf **bpp,
195
+			int whichfork);
175196 
176197 /*
177198  * Utility routines.
178199  */
200
+
201
+#define XFS_DABUF_MAP_HOLE_OK	(1 << 0)
202
+
179203 int	xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno);
180204 int	xfs_da_grow_inode_int(struct xfs_da_args *args, xfs_fileoff_t *bno,
181205 			      int count);
182206 int	xfs_da_get_buf(struct xfs_trans *trans, struct xfs_inode *dp,
183
-			      xfs_dablk_t bno, xfs_daddr_t mappedbno,
184
-			      struct xfs_buf **bp, int whichfork);
207
+		xfs_dablk_t bno, struct xfs_buf **bp, int whichfork);
185208 int	xfs_da_read_buf(struct xfs_trans *trans, struct xfs_inode *dp,
186
-			       xfs_dablk_t bno, xfs_daddr_t mappedbno,
187
-			       struct xfs_buf **bpp, int whichfork,
188
-			       const struct xfs_buf_ops *ops);
209
+		xfs_dablk_t bno, unsigned int flags, struct xfs_buf **bpp,
210
+		int whichfork, const struct xfs_buf_ops *ops);
189211 int	xfs_da_reada_buf(struct xfs_inode *dp, xfs_dablk_t bno,
190
-				xfs_daddr_t mapped_bno, int whichfork,
191
-				const struct xfs_buf_ops *ops);
212
+		unsigned int flags, int whichfork,
213
+		const struct xfs_buf_ops *ops);
192214 int	xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
193215 					  struct xfs_buf *dead_buf);
194216 
....@@ -197,10 +219,14 @@
197219 				const unsigned char *name, int len);
198220 
199221 
200
-xfs_da_state_t *xfs_da_state_alloc(void);
222
+struct xfs_da_state *xfs_da_state_alloc(struct xfs_da_args *args);
201223 void xfs_da_state_free(xfs_da_state_t *state);
202224 
225
+void	xfs_da3_node_hdr_from_disk(struct xfs_mount *mp,
226
+		struct xfs_da3_icnode_hdr *to, struct xfs_da_intnode *from);
227
+void	xfs_da3_node_hdr_to_disk(struct xfs_mount *mp,
228
+		struct xfs_da_intnode *to, struct xfs_da3_icnode_hdr *from);
229
+
203230 extern struct kmem_zone *xfs_da_state_zone;
204
-extern const struct xfs_nameops xfs_default_nameops;
205231 
206232 #endif	/* __XFS_DA_BTREE_H__ */