52 строки
1.5 KiB
C
52 строки
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_ATTR_SF_H__
|
|
#define __XFS_ATTR_SF_H__
|
|
|
|
/*
|
|
* Attribute storage when stored inside the inode.
|
|
*
|
|
* Small attribute lists are packed as tightly as possible so as
|
|
* to fit into the literal area of the inode.
|
|
*/
|
|
typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t;
|
|
|
|
/*
|
|
* We generate this then sort it, attr_list() must return things in hash-order.
|
|
*/
|
|
typedef struct xfs_attr_sf_sort {
|
|
uint8_t entno; /* entry number in original list */
|
|
uint8_t namelen; /* length of name value (no null) */
|
|
uint8_t valuelen; /* length of value */
|
|
uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
|
|
xfs_dahash_t hash; /* this entry's hash value */
|
|
unsigned char *name; /* name value, pointer into buffer */
|
|
} xfs_attr_sf_sort_t;
|
|
|
|
#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
|
|
((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
|
|
|
|
/* space name/value uses */
|
|
static inline int xfs_attr_sf_entsize_byname(uint8_t nlen, uint8_t vlen)
|
|
{
|
|
return sizeof(struct xfs_attr_sf_entry) + nlen + vlen;
|
|
}
|
|
|
|
/* space an entry uses */
|
|
static inline int xfs_attr_sf_entsize(struct xfs_attr_sf_entry *sfep)
|
|
{
|
|
return struct_size(sfep, nameval, sfep->namelen + sfep->valuelen);
|
|
}
|
|
|
|
/* next entry in struct */
|
|
static inline struct xfs_attr_sf_entry *
|
|
xfs_attr_sf_nextentry(struct xfs_attr_sf_entry *sfep)
|
|
{
|
|
return (void *)sfep + xfs_attr_sf_entsize(sfep);
|
|
}
|
|
|
|
#endif /* __XFS_ATTR_SF_H__ */
|