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 * 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 */ 15 typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t; 16 17 /* 18 * We generate this then sort it, attr_list() must return things in hash-order. 19 */ 20 typedef struct xfs_attr_sf_sort { 21 uint8_t entno; /* entry number in original list */ 22 uint8_t namelen; /* length of name value (no null) */ 23 uint8_t valuelen; /* length of value */ 24 uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */ 25 xfs_dahash_t hash; /* this entry's hash value */ 26 unsigned char *name; /* name value, pointer into buffer */ 27 } xfs_attr_sf_sort_t; 28 29 #define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \ 30 ((1 << (NBBY*(int)sizeof(uint8_t))) - 1) 31 32 /* space name/value uses */ 33 static inline int xfs_attr_sf_entsize_byname(uint8_t nlen, uint8_t vlen) 34 { 35 return sizeof(struct xfs_attr_sf_entry) + nlen + vlen; 36 } 37 38 /* space an entry uses */ 39 static inline int xfs_attr_sf_entsize(struct xfs_attr_sf_entry *sfep) 40 { 41 return struct_size(sfep, nameval, sfep->namelen + sfep->valuelen); 42 } 43 44 /* next entry in struct */ 45 static inline struct xfs_attr_sf_entry * 46 xfs_attr_sf_nextentry(struct xfs_attr_sf_entry *sfep) 47 { 48 return (void *)sfep + xfs_attr_sf_entsize(sfep); 49 } 50 51 #endif /* __XFS_ATTR_SF_H__ */ 52