1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc. 4 * Copyright (c) 2013 Red Hat, Inc. 5 * All Rights Reserved. 6 */ 7 #ifndef __XFS_ATTR_LEAF_H__ 8 #define __XFS_ATTR_LEAF_H__ 9 10 struct attrlist; 11 struct attrlist_cursor_kern; 12 struct xfs_attr_list_context; 13 struct xfs_da_args; 14 struct xfs_da_state; 15 struct xfs_da_state_blk; 16 struct xfs_inode; 17 struct xfs_trans; 18 19 /* 20 * Used to keep a list of "remote value" extents when unlinking an inode. 21 */ 22 typedef struct xfs_attr_inactive_list { 23 xfs_dablk_t valueblk; /* block number of value bytes */ 24 int valuelen; /* number of bytes in value */ 25 } xfs_attr_inactive_list_t; 26 27 28 /*======================================================================== 29 * Function prototypes for the kernel. 30 *========================================================================*/ 31 32 /* 33 * Internal routines when attribute fork size < XFS_LITINO(mp). 34 */ 35 void xfs_attr_shortform_create(struct xfs_da_args *args); 36 void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff); 37 int xfs_attr_shortform_lookup(struct xfs_da_args *args); 38 int xfs_attr_shortform_getvalue(struct xfs_da_args *args); 39 int xfs_attr_shortform_to_leaf(struct xfs_da_args *args, 40 struct xfs_buf **leaf_bp); 41 int xfs_attr_shortform_remove(struct xfs_da_args *args); 42 int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp); 43 int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes); 44 xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip); 45 void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp); 46 47 /* 48 * Internal routines when attribute fork size == XFS_LBSIZE(mp). 49 */ 50 int xfs_attr3_leaf_to_node(struct xfs_da_args *args); 51 int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp, 52 struct xfs_da_args *args, int forkoff); 53 int xfs_attr3_leaf_clearflag(struct xfs_da_args *args); 54 int xfs_attr3_leaf_setflag(struct xfs_da_args *args); 55 int xfs_attr3_leaf_flipflags(struct xfs_da_args *args); 56 57 /* 58 * Routines used for growing the Btree. 59 */ 60 int xfs_attr3_leaf_split(struct xfs_da_state *state, 61 struct xfs_da_state_blk *oldblk, 62 struct xfs_da_state_blk *newblk); 63 int xfs_attr3_leaf_lookup_int(struct xfs_buf *leaf, 64 struct xfs_da_args *args); 65 int xfs_attr3_leaf_getvalue(struct xfs_buf *bp, struct xfs_da_args *args); 66 int xfs_attr3_leaf_add(struct xfs_buf *leaf_buffer, 67 struct xfs_da_args *args); 68 int xfs_attr3_leaf_remove(struct xfs_buf *leaf_buffer, 69 struct xfs_da_args *args); 70 void xfs_attr3_leaf_list_int(struct xfs_buf *bp, 71 struct xfs_attr_list_context *context); 72 73 /* 74 * Routines used for shrinking the Btree. 75 */ 76 int xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval); 77 void xfs_attr3_leaf_unbalance(struct xfs_da_state *state, 78 struct xfs_da_state_blk *drop_blk, 79 struct xfs_da_state_blk *save_blk); 80 /* 81 * Utility routines. 82 */ 83 xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_buf *bp, int *count); 84 int xfs_attr_leaf_order(struct xfs_buf *leaf1_bp, 85 struct xfs_buf *leaf2_bp); 86 int xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local); 87 int xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp, 88 xfs_dablk_t bno, xfs_daddr_t mappedbno, 89 struct xfs_buf **bpp); 90 void xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo, 91 struct xfs_attr3_icleaf_hdr *to, 92 struct xfs_attr_leafblock *from); 93 void xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo, 94 struct xfs_attr_leafblock *to, 95 struct xfs_attr3_icleaf_hdr *from); 96 97 #endif /* __XFS_ATTR_LEAF_H__ */ 98