[thirdparty/xfsprogs-dev.git] / libxfs / xfs_attr_sf.h

// 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;
typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_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_BYNAME(nlen,vlen)	/* space name/value uses */ \
	(((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
#define XFS_ATTR_SF_ENTSIZE_MAX			/* max space for name&value */ \
	((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
#define XFS_ATTR_SF_ENTSIZE(sfep)		/* space an entry uses */ \
	((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
#define XFS_ATTR_SF_NEXTENTRY(sfep)		/* next entry in struct */ \
	((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
#define XFS_ATTR_SF_TOTSIZE(dp)			/* total space in use */ \
	(be16_to_cpu(((xfs_attr_shortform_t *)	\
		((dp)->i_afp->if_u1.if_data))->hdr.totsize))

#endif	/* __XFS_ATTR_SF_H__ */
Commit	Line	Data
37b3b4d6	1	// SPDX-License-Identifier: GPL-2.0
2bd0ea18	2	/*
f302e9e4 NS	3	* Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
f302e9e4 NS	4	* All Rights Reserved.
2bd0ea18 NS	5	*/
2bd0ea18 NS	6	#ifndef __XFS_ATTR_SF_H__
dfc130f3	7	#define __XFS_ATTR_SF_H__
2bd0ea18 NS	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	*/
2bd0ea18 NS	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 {
4a492e72 DW	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) */
2bd0ea18	26	xfs_dahash_t hash; /* this entry's hash value */
56b2de80	27	unsigned char name; / name value, pointer into buffer */
2bd0ea18 NS	28	} xfs_attr_sf_sort_t;
2bd0ea18 NS	29
2bd0ea18	30	#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \
f302e9e4	31	(((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
2bd0ea18	32	#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
4a492e72	33	((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
2bd0ea18 NS	34	#define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \
2bd0ea18 NS	35	((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
2bd0ea18	36	#define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
f302e9e4	37	((xfs_attr_sf_entry_t )((char )(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
2bd0ea18	38	#define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \
5e656dbb BN	39	(be16_to_cpu(((xfs_attr_shortform_t *) \
5e656dbb BN	40	((dp)->i_afp->if_u1.if_data))->hdr.totsize))
2bd0ea18	41
2bd0ea18	42	#endif /* __XFS_ATTR_SF_H__ */