1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #ifndef __XFS_ATTR_SF_H__
7 #define __XFS_ATTR_SF_H__
8
9 /*
10 * Attribute storage when stored inside the inode.
11 *
12 * Small attribute lists are packed as tightly as possible so as
13 * to fit into the literal area of the inode.
14 */
15 typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t;
16 typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_t;
17
18 /*
19 * We generate this then sort it, attr_list() must return things in hash-order.
20 */
21 typedef struct xfs_attr_sf_sort {
22 uint8_t entno; /* entry number in original list */
23 uint8_t namelen; /* length of name value (no null) */
24 uint8_t valuelen; /* length of value */
25 uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
26 xfs_dahash_t hash; /* this entry's hash value */
27 unsigned char *name; /* name value, pointer into buffer */
28 } xfs_attr_sf_sort_t;
29
30 #define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \
31 (((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
32 #define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
33 ((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
34 #define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \
35 ((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
36 #define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
37 ((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
38 #define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \
39 (be16_to_cpu(((xfs_attr_shortform_t *) \
40 ((dp)->i_afp->if_u1.if_data))->hdr.totsize))
41
42 #endif /* __XFS_ATTR_SF_H__ */