1 /* 2 * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_ATTR_SF_H__ 19 #define __XFS_ATTR_SF_H__ 20 21 /* 22 * Attribute storage when stored inside the inode. 23 * 24 * Small attribute lists are packed as tightly as possible so as 25 * to fit into the literal area of the inode. 26 */ 27 typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t; 28 typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_t; 29 30 /* 31 * We generate this then sort it, attr_list() must return things in hash-order. 32 */ 33 typedef struct xfs_attr_sf_sort { 34 __uint8_t entno; /* entry number in original list */ 35 __uint8_t namelen; /* length of name value (no null) */ 36 __uint8_t valuelen; /* length of value */ 37 __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */ 38 xfs_dahash_t hash; /* this entry's hash value */ 39 unsigned char *name; /* name value, pointer into buffer */ 40 } xfs_attr_sf_sort_t; 41 42 #define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \ 43 (((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen))) 44 #define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \ 45 ((1 << (NBBY*(int)sizeof(__uint8_t))) - 1) 46 #define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \ 47 ((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen) 48 #define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \ 49 ((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep))) 50 #define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \ 51 (be16_to_cpu(((xfs_attr_shortform_t *) \ 52 ((dp)->i_afp->if_u1.if_data))->hdr.totsize)) 53 54 #endif /* __XFS_ATTR_SF_H__ */ 55