1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
4 * Copyright (c) 2013 Red Hat, Inc.
7 #ifndef __XFS_ATTR_LEAF_H__
8 #define __XFS_ATTR_LEAF_H__
11 struct attrlist_cursor_kern;
12 struct xfs_attr_list_context;
15 struct xfs_da_state_blk;
20 * Incore version of the attribute leaf header.
22 struct xfs_attr3_icleaf_hdr {
29 * Firstused is 32-bit here instead of 16-bit like the on-disk variant
30 * to support maximum fsb size of 64k without overflow issues throughout
31 * the attr code. Instead, the overflow condition is handled on
32 * conversion to/from disk.
39 } freemap[XFS_ATTR_LEAF_MAPSIZE];
42 /*========================================================================
43 * Function prototypes for the kernel.
44 *========================================================================*/
47 * Internal routines when attribute fork size < XFS_LITINO(mp).
49 void xfs_attr_shortform_create(struct xfs_da_args *args);
50 void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
51 int xfs_attr_shortform_lookup(struct xfs_da_args *args);
52 int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
53 int xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
54 struct xfs_buf **leaf_bp);
55 int xfs_attr_shortform_remove(struct xfs_da_args *args);
56 int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
57 int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
58 xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
59 void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);
62 * Internal routines when attribute fork size == XFS_LBSIZE(mp).
64 int xfs_attr3_leaf_to_node(struct xfs_da_args *args);
65 int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
66 struct xfs_da_args *args, int forkoff);
67 int xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
68 int xfs_attr3_leaf_setflag(struct xfs_da_args *args);
69 int xfs_attr3_leaf_flipflags(struct xfs_da_args *args);
72 * Routines used for growing the Btree.
74 int xfs_attr3_leaf_split(struct xfs_da_state *state,
75 struct xfs_da_state_blk *oldblk,
76 struct xfs_da_state_blk *newblk);
77 int xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf,
78 struct xfs_da_args *args);
79 int xfs_attr3_leaf_getvalue(struct xfs_buf *bp, struct xfs_da_args *args);
80 int xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer,
81 struct xfs_da_args *args);
82 int xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer,
83 struct xfs_da_args *args);
84 int xfs_attr3_leaf_list_int(struct xfs_buf *bp,
85 struct xfs_attr_list_context *context);
88 * Routines used for shrinking the Btree.
90 int xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval);
91 void xfs_attr3_leaf_unbalance(struct xfs_da_state *state,
92 struct xfs_da_state_blk *drop_blk,
93 struct xfs_da_state_blk *save_blk);
97 xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_buf *bp, int *count);
98 int xfs_attr_leaf_order(struct xfs_buf *leaf1_bp,
99 struct xfs_buf *leaf2_bp);
100 int xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local);
101 int xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
102 xfs_dablk_t bno, struct xfs_buf **bpp);
103 void xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
104 struct xfs_attr3_icleaf_hdr *to,
105 struct xfs_attr_leafblock *from);
106 void xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
107 struct xfs_attr_leafblock *to,
108 struct xfs_attr3_icleaf_hdr *from);
110 #endif /* __XFS_ATTR_LEAF_H__ */