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/* 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__
/*
* 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);
}
/* first entry in the SF attr fork */
static inline struct xfs_attr_sf_entry *
xfs_attr_sf_firstentry(struct xfs_attr_sf_hdr *hdr)
{
return (struct xfs_attr_sf_entry *)(hdr + 1);
}
/* next entry after sfep */
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);
}
/* pointer to the space after the last entry, e.g. for adding a new one */
static inline struct xfs_attr_sf_entry *
xfs_attr_sf_endptr(struct xfs_attr_sf_hdr *sf)
{
return (void *)sf + be16_to_cpu(sf->totsize);
}
#endif /* __XFS_ATTR_SF_H__ */
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