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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 * We generate this then sort it, attr_list() must return things in hash-order.11 */12typedef struct xfs_attr_sf_sort {13 uint8_t entno; /* entry number in original list */14 uint8_t namelen; /* length of name value (no null) */15 uint8_t valuelen; /* length of value */16 uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */17 xfs_dahash_t hash; /* this entry's hash value */18 unsigned char *name; /* name value, pointer into buffer */19 void *value;20} xfs_attr_sf_sort_t;21 22#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \23 ((1 << (NBBY*(int)sizeof(uint8_t))) - 1)24 25/* space name/value uses */26static inline int xfs_attr_sf_entsize_byname(uint8_t nlen, uint8_t vlen)27{28 return sizeof(struct xfs_attr_sf_entry) + nlen + vlen;29}30 31/* space an entry uses */32static inline int xfs_attr_sf_entsize(struct xfs_attr_sf_entry *sfep)33{34 return struct_size(sfep, nameval, sfep->namelen + sfep->valuelen);35}36 37/* first entry in the SF attr fork */38static inline struct xfs_attr_sf_entry *39xfs_attr_sf_firstentry(struct xfs_attr_sf_hdr *hdr)40{41 return (struct xfs_attr_sf_entry *)(hdr + 1);42}43 44/* next entry after sfep */45static inline struct xfs_attr_sf_entry *46xfs_attr_sf_nextentry(struct xfs_attr_sf_entry *sfep)47{48 return (void *)sfep + xfs_attr_sf_entsize(sfep);49}50 51/* pointer to the space after the last entry, e.g. for adding a new one */52static inline struct xfs_attr_sf_entry *53xfs_attr_sf_endptr(struct xfs_attr_sf_hdr *sf)54{55 return (void *)sf + be16_to_cpu(sf->totsize);56}57 58#endif /* __XFS_ATTR_SF_H__ */59