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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
- * Copyright (c) 2013 Red Hat, Inc.
- * All Rights Reserved.
- */
- #ifndef __XFS_ATTR_LEAF_H__
- #define __XFS_ATTR_LEAF_H__
- struct attrlist;
- struct xfs_attr_list_context;
- struct xfs_da_args;
- struct xfs_da_state;
- struct xfs_da_state_blk;
- struct xfs_inode;
- struct xfs_trans;
- /*
- * Incore version of the attribute leaf header.
- */
- struct xfs_attr3_icleaf_hdr {
- uint32_t forw;
- uint32_t back;
- uint16_t magic;
- uint16_t count;
- uint16_t usedbytes;
- /*
- * Firstused is 32-bit here instead of 16-bit like the on-disk variant
- * to support maximum fsb size of 64k without overflow issues throughout
- * the attr code. Instead, the overflow condition is handled on
- * conversion to/from disk.
- */
- uint32_t firstused;
- __u8 holes;
- struct {
- uint16_t base;
- uint16_t size;
- } freemap[XFS_ATTR_LEAF_MAPSIZE];
- };
- /*========================================================================
- * 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_sf_removename(struct xfs_da_args *args);
- int xfs_attr_sf_findname(struct xfs_da_args *args,
- struct xfs_attr_sf_entry **sfep,
- unsigned int *basep);
- int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
- int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
- xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
- void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);
- /*
- * 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);
- /*
- * 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, struct xfs_buf **bpp);
- void xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
- struct xfs_attr3_icleaf_hdr *to,
- struct xfs_attr_leafblock *from);
- void xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
- struct xfs_attr_leafblock *to,
- struct xfs_attr3_icleaf_hdr *from);
- #endif /* __XFS_ATTR_LEAF_H__ */
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