[thirdparty/xfsprogs-dev.git] / libxfs / xfs_attr_leaf.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
 * Copyright (c) 2013 Red Hat, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_ATTR_LEAF_H__
#define	__XFS_ATTR_LEAF_H__

struct attrlist;
struct attrlist_cursor_kern;
struct xfs_attr_list_context;
struct xfs_da_args;
struct xfs_da_state;
struct xfs_da_state_blk;
struct xfs_inode;
struct xfs_trans;

/*
 * Used to keep a list of "remote value" extents when unlinking an inode.
 */
typedef struct xfs_attr_inactive_list {
	xfs_dablk_t	valueblk;	/* block number of value bytes */
	int		valuelen;	/* number of bytes in value */
} xfs_attr_inactive_list_t;


/*========================================================================
 * Function prototypes for the kernel.
 *========================================================================*/

/*
 * Internal routines when attribute fork size < XFS_LITINO(mp).
 */
void	xfs_attr_shortform_create(struct xfs_da_args *args);
void	xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
int	xfs_attr_shortform_lookup(struct xfs_da_args *args);
int	xfs_attr_shortform_getvalue(struct xfs_da_args *args);
int	xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
			struct xfs_buf **leaf_bp);
int	xfs_attr_shortform_remove(struct xfs_da_args *args);
int	xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
int	xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
void	xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);

/*
 * Internal routines when attribute fork size == XFS_LBSIZE(mp).
 */
int	xfs_attr3_leaf_to_node(struct xfs_da_args *args);
int	xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
				   struct xfs_da_args *args, int forkoff);
int	xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
int	xfs_attr3_leaf_setflag(struct xfs_da_args *args);
int	xfs_attr3_leaf_flipflags(struct xfs_da_args *args);

/*
 * Routines used for growing the Btree.
 */
int	xfs_attr3_leaf_split(struct xfs_da_state *state,
				   struct xfs_da_state_blk *oldblk,
				   struct xfs_da_state_blk *newblk);
int	xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf,
					struct xfs_da_args *args);
int	xfs_attr3_leaf_getvalue(struct xfs_buf *bp, struct xfs_da_args *args);
int	xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer,
				 struct xfs_da_args *args);
int	xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer,
				    struct xfs_da_args *args);
void	xfs_attr3_leaf_list_int(struct xfs_buf *bp,
				      struct xfs_attr_list_context *context);

/*
 * Routines used for shrinking the Btree.
 */
int	xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval);
void	xfs_attr3_leaf_unbalance(struct xfs_da_state *state,
				       struct xfs_da_state_blk *drop_blk,
				       struct xfs_da_state_blk *save_blk);
/*
 * Utility routines.
 */
xfs_dahash_t	xfs_attr_leaf_lasthash(struct xfs_buf *bp, int *count);
int	xfs_attr_leaf_order(struct xfs_buf *leaf1_bp,
				   struct xfs_buf *leaf2_bp);
int	xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local);
int	xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
			xfs_dablk_t bno, xfs_daddr_t mappedbno,
			struct xfs_buf **bpp);
void	xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
				     struct xfs_attr3_icleaf_hdr *to,
				     struct xfs_attr_leafblock *from);
void	xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
				   struct xfs_attr_leafblock *to,
				   struct xfs_attr3_icleaf_hdr *from);

#endif	/* __XFS_ATTR_LEAF_H__ */
Commit	Line	Data
37b3b4d6	1	// SPDX-License-Identifier: GPL-2.0
2bd0ea18	2	/*
f302e9e4	3	* Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
a24374f4	4	* Copyright (c) 2013 Red Hat, Inc.
f302e9e4	5	* All Rights Reserved.
2bd0ea18 NS	6	*/
2bd0ea18 NS	7	#ifndef __XFS_ATTR_LEAF_H__
dfc130f3	8	#define __XFS_ATTR_LEAF_H__
2bd0ea18	9
2bd0ea18 NS	10	struct attrlist;
2bd0ea18 NS	11	struct attrlist_cursor_kern;
5e656dbb	12	struct xfs_attr_list_context;
2bd0ea18 NS	13	struct xfs_da_args;
	14	struct xfs_da_state;
	15	struct xfs_da_state_blk;
	16	struct xfs_inode;
	17	struct xfs_trans;
	18
2bd0ea18 NS	19	/*
	20	* Used to keep a list of "remote value" extents when unlinking an inode.
	21	*/
	22	typedef struct xfs_attr_inactive_list {
	23	xfs_dablk_t valueblk; /* block number of value bytes */
	24	int valuelen; /* number of bytes in value */
	25	} xfs_attr_inactive_list_t;
	26
	27
	28	/*========================================================================
	29	* Function prototypes for the kernel.
	30	========================================================================/
	31
	32	/*
ca86e759	33	* Internal routines when attribute fork size < XFS_LITINO(mp).
2bd0ea18	34	*/
ca86e759 NS	35	void xfs_attr_shortform_create(struct xfs_da_args *args);
ca86e759 NS	36	void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
2bd0ea18 NS	37	int xfs_attr_shortform_lookup(struct xfs_da_args *args);
2bd0ea18 NS	38	int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
3fbc4d7d DW	39	int xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
3fbc4d7d DW	40	struct xfs_buf **leaf_bp);
ca86e759	41	int xfs_attr_shortform_remove(struct xfs_da_args *args);
a2ceac1f	42	int xfs_attr_shortform_allfit(struct xfs_buf bp, struct xfs_inode dp);
b626fb59	43	int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
c7a710b7	44	xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
a37f46d5	45	void xfs_attr_fork_remove(struct xfs_inode ip, struct xfs_trans tp);
2bd0ea18 NS	46
2bd0ea18 NS	47	/*
5a35bf2c	48	* Internal routines when attribute fork size == XFS_LBSIZE(mp).
2bd0ea18	49	*/
a24374f4 DC	50	int xfs_attr3_leaf_to_node(struct xfs_da_args *args);
a24374f4 DC	51	int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
ca86e759	52	struct xfs_da_args *args, int forkoff);
a24374f4 DC	53	int xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
	54	int xfs_attr3_leaf_setflag(struct xfs_da_args *args);
	55	int xfs_attr3_leaf_flipflags(struct xfs_da_args *args);
2bd0ea18 NS	56
	57	/*
	58	* Routines used for growing the Btree.
	59	*/
a24374f4	60	int xfs_attr3_leaf_split(struct xfs_da_state *state,
2bd0ea18 NS	61	struct xfs_da_state_blk *oldblk,
2bd0ea18 NS	62	struct xfs_da_state_blk *newblk);
a24374f4	63	int xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf,
2bd0ea18	64	struct xfs_da_args *args);
a24374f4 DC	65	int xfs_attr3_leaf_getvalue(struct xfs_buf bp, struct xfs_da_args args);
a24374f4 DC	66	int xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer,
2bd0ea18	67	struct xfs_da_args *args);
a24374f4	68	int xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer,
2bd0ea18	69	struct xfs_da_args *args);
601410bb	70	void xfs_attr3_leaf_list_int(struct xfs_buf *bp,
2bd0ea18 NS	71	struct xfs_attr_list_context *context);
	72
	73	/*
	74	* Routines used for shrinking the Btree.
	75	*/
a24374f4 DC	76	int xfs_attr3_leaf_toosmall(struct xfs_da_state state, int retval);
a24374f4 DC	77	void xfs_attr3_leaf_unbalance(struct xfs_da_state *state,
2bd0ea18 NS	78	struct xfs_da_state_blk *drop_blk,
2bd0ea18 NS	79	struct xfs_da_state_blk *save_blk);
2bd0ea18 NS	80	/*
	81	* Utility routines.
	82	*/
a2ceac1f DC	83	xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_buf bp, int count);
	84	int xfs_attr_leaf_order(struct xfs_buf *leaf1_bp,
	85	struct xfs_buf *leaf2_bp);
ff105f75	86	int xfs_attr_leaf_newentsize(struct xfs_da_args args, int local);
a24374f4	87	int xfs_attr3_leaf_read(struct xfs_trans tp, struct xfs_inode dp,
a2ceac1f DC	88	xfs_dablk_t bno, xfs_daddr_t mappedbno,
a2ceac1f DC	89	struct xfs_buf **bpp);
19ebedcf DC	90	void xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
19ebedcf DC	91	struct xfs_attr3_icleaf_hdr *to,
a24374f4	92	struct xfs_attr_leafblock *from);
19ebedcf DC	93	void xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
19ebedcf DC	94	struct xfs_attr_leafblock *to,
658ac3e3	95	struct xfs_attr3_icleaf_hdr *from);
a2ceac1f	96
2bd0ea18	97	#endif /* __XFS_ATTR_LEAF_H__ */