mirror of https://gitee.com/openkylin/linux.git
98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
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* Copyright (c) 2013 Red Hat, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_ATTR_LEAF_H__
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#define __XFS_ATTR_LEAF_H__
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struct attrlist;
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struct attrlist_cursor_kern;
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struct xfs_attr_list_context;
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struct xfs_da_args;
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struct xfs_da_state;
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struct xfs_da_state_blk;
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struct xfs_inode;
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struct xfs_trans;
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/*
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* Used to keep a list of "remote value" extents when unlinking an inode.
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*/
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typedef struct xfs_attr_inactive_list {
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xfs_dablk_t valueblk; /* block number of value bytes */
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int valuelen; /* number of bytes in value */
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} xfs_attr_inactive_list_t;
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/*========================================================================
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* Function prototypes for the kernel.
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*========================================================================*/
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/*
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* Internal routines when attribute fork size < XFS_LITINO(mp).
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*/
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void xfs_attr_shortform_create(struct xfs_da_args *args);
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void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
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int xfs_attr_shortform_lookup(struct xfs_da_args *args);
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int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
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int xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
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struct xfs_buf **leaf_bp);
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int xfs_attr_shortform_remove(struct xfs_da_args *args);
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int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
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int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
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xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
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void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);
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/*
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* Internal routines when attribute fork size == XFS_LBSIZE(mp).
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*/
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int xfs_attr3_leaf_to_node(struct xfs_da_args *args);
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int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
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struct xfs_da_args *args, int forkoff);
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int xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
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int xfs_attr3_leaf_setflag(struct xfs_da_args *args);
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int xfs_attr3_leaf_flipflags(struct xfs_da_args *args);
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/*
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* Routines used for growing the Btree.
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*/
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int xfs_attr3_leaf_split(struct xfs_da_state *state,
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struct xfs_da_state_blk *oldblk,
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struct xfs_da_state_blk *newblk);
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int xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf,
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struct xfs_da_args *args);
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int xfs_attr3_leaf_getvalue(struct xfs_buf *bp, struct xfs_da_args *args);
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int xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer,
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struct xfs_da_args *args);
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int xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer,
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struct xfs_da_args *args);
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void xfs_attr3_leaf_list_int(struct xfs_buf *bp,
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struct xfs_attr_list_context *context);
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/*
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* Routines used for shrinking the Btree.
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*/
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int xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval);
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void xfs_attr3_leaf_unbalance(struct xfs_da_state *state,
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struct xfs_da_state_blk *drop_blk,
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struct xfs_da_state_blk *save_blk);
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/*
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* Utility routines.
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*/
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xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_buf *bp, int *count);
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int xfs_attr_leaf_order(struct xfs_buf *leaf1_bp,
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struct xfs_buf *leaf2_bp);
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int xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local);
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int xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
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xfs_dablk_t bno, xfs_daddr_t mappedbno,
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struct xfs_buf **bpp);
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void xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
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struct xfs_attr3_icleaf_hdr *to,
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struct xfs_attr_leafblock *from);
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void xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
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struct xfs_attr_leafblock *to,
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struct xfs_attr3_icleaf_hdr *from);
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#endif /* __XFS_ATTR_LEAF_H__ */
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