linux/fs/xfs/libxfs/xfs_attr_sf.h
Carlos Maiolino e01b7eed5d xfs: Convert xfs_attr_sf macros to inline functions
xfs_attr_sf_totsize() requires access to xfs_inode structure, so, once
xfs_attr_shortform_addname() is its only user, move it to xfs_attr.c
instead of playing with more #includes.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-09-15 20:52:42 -07:00

52 lines
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__ */