diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_attr_leaf.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_attr_leaf.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h new file mode 100644 index 000000000000..e2929da7c3ba --- /dev/null +++ b/fs/xfs/libxfs/xfs_attr_leaf.h @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc. + * Copyright (c) 2013 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#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); +int xfs_attr_shortform_remove(struct xfs_da_args *args); +int xfs_attr_shortform_list(struct xfs_attr_list_context *context); +int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp); +int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes); + + +/* + * 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); +int 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); +int xfs_attr3_root_inactive(struct xfs_trans **trans, struct xfs_inode *dp); + +/* + * 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_attr3_icleaf_hdr *to, + struct xfs_attr_leafblock *from); +void xfs_attr3_leaf_hdr_to_disk(struct xfs_attr_leafblock *to, + struct xfs_attr3_icleaf_hdr *from); + +#endif /* __XFS_ATTR_LEAF_H__ */ |