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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - fs/xfs/libxfs/xfs_attr_leaf.h
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__ */