2 * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
3 * Copyright (c) 2013 Red Hat, Inc.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it would be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef __XFS_ATTR_LEAF_H__
20 #define __XFS_ATTR_LEAF_H__
23 struct attrlist_cursor_kern;
24 struct xfs_attr_list_context;
27 struct xfs_da_state_blk;
32 * Used to keep a list of "remote value" extents when unlinking an inode.
34 typedef struct xfs_attr_inactive_list {
35 xfs_dablk_t valueblk; /* block number of value bytes */
36 int valuelen; /* number of bytes in value */
37 } xfs_attr_inactive_list_t;
40 /*========================================================================
41 * Function prototypes for the kernel.
42 *========================================================================*/
45 * Internal routines when attribute fork size < XFS_LITINO(mp).
47 void xfs_attr_shortform_create(struct xfs_da_args *args);
48 void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
49 int xfs_attr_shortform_lookup(struct xfs_da_args *args);
50 int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
51 int xfs_attr_shortform_to_leaf(struct xfs_da_args *args);
52 int xfs_attr_shortform_remove(struct xfs_da_args *args);
53 int xfs_attr_shortform_list(struct xfs_attr_list_context *context);
54 int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
55 int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes);
56 void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);
59 * Internal routines when attribute fork size == XFS_LBSIZE(mp).
61 int xfs_attr3_leaf_to_node(struct xfs_da_args *args);
62 int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
63 struct xfs_da_args *args, int forkoff);
64 int xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
65 int xfs_attr3_leaf_setflag(struct xfs_da_args *args);
66 int xfs_attr3_leaf_flipflags(struct xfs_da_args *args);
69 * Routines used for growing the Btree.
71 int xfs_attr3_leaf_split(struct xfs_da_state *state,
72 struct xfs_da_state_blk *oldblk,
73 struct xfs_da_state_blk *newblk);
74 int xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf,
75 struct xfs_da_args *args);
76 int xfs_attr3_leaf_getvalue(struct xfs_buf *bp, struct xfs_da_args *args);
77 int xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer,
78 struct xfs_da_args *args);
79 int xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer,
80 struct xfs_da_args *args);
81 int xfs_attr3_leaf_list_int(struct xfs_buf *bp,
82 struct xfs_attr_list_context *context);
85 * Routines used for shrinking the Btree.
87 int xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval);
88 void xfs_attr3_leaf_unbalance(struct xfs_da_state *state,
89 struct xfs_da_state_blk *drop_blk,
90 struct xfs_da_state_blk *save_blk);
91 int xfs_attr3_root_inactive(struct xfs_trans **trans, struct xfs_inode *dp);
96 xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_buf *bp, int *count);
97 int xfs_attr_leaf_order(struct xfs_buf *leaf1_bp,
98 struct xfs_buf *leaf2_bp);
99 int xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local);
100 int xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
101 xfs_dablk_t bno, xfs_daddr_t mappedbno,
102 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__ */