2 * Copyright (c) 2000, 2002 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
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28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
32 #ifndef __XFS_ATTR_SF_H__
33 #define __XFS_ATTR_SF_H__
36 * Attribute storage when stored inside the inode.
38 * Small attribute lists are packed as tightly as possible so as
39 * to fit into the literal area of the inode.
45 * Entries are packed toward the top as tight as possible.
47 typedef struct xfs_attr_shortform {
48 struct xfs_attr_sf_hdr { /* constant-structure header block */
49 __uint16_t totsize; /* total bytes in shortform list */
50 __uint8_t count; /* count of active entries */
52 struct xfs_attr_sf_entry {
53 __uint8_t namelen; /* actual length of name (no NULL) */
54 __uint8_t valuelen; /* actual length of value (no NULL) */
55 __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
56 __uint8_t nameval[1]; /* name & value bytes concatenated */
57 } list[1]; /* variable sized array */
58 } xfs_attr_shortform_t;
59 typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t;
60 typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_t;
63 * We generate this then sort it, attr_list() must return things in hash-order.
65 typedef struct xfs_attr_sf_sort {
66 __uint8_t entno; /* entry number in original list */
67 __uint8_t namelen; /* length of name value (no null) */
68 __uint8_t valuelen; /* length of value */
69 __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
70 xfs_dahash_t hash; /* this entry's hash value */
71 char *name; /* name value, pointer into buffer */
74 #define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \
75 (((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
76 #define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
77 ((1 << (NBBY*(int)sizeof(__uint8_t))) - 1)
78 #define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \
79 ((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
80 #define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
81 ((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
82 #define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \
83 (INT_GET(((xfs_attr_shortform_t *) \
84 ((dp)->i_afp->if_u1.if_data))->hdr.totsize, ARCH_CONVERT))
86 #if defined(XFS_ATTR_TRACE)
88 * Kernel tracing support for attribute lists
90 struct xfs_attr_list_context;
91 struct xfs_da_intnode;
92 struct xfs_da_node_entry;
93 struct xfs_attr_leafblock;
95 #define XFS_ATTR_TRACE_SIZE 4096 /* size of global trace buffer */
96 extern ktrace_t *xfs_attr_trace_buf;
101 #define XFS_ATTR_KTRACE_L_C 1 /* context */
102 #define XFS_ATTR_KTRACE_L_CN 2 /* context, node */
103 #define XFS_ATTR_KTRACE_L_CB 3 /* context, btree */
104 #define XFS_ATTR_KTRACE_L_CL 4 /* context, leaf */
106 void xfs_attr_trace_l_c(char *where, struct xfs_attr_list_context *context);
107 void xfs_attr_trace_l_cn(char *where, struct xfs_attr_list_context *context,
108 struct xfs_da_intnode *node);
109 void xfs_attr_trace_l_cb(char *where, struct xfs_attr_list_context *context,
110 struct xfs_da_node_entry *btree);
111 void xfs_attr_trace_l_cl(char *where, struct xfs_attr_list_context *context,
112 struct xfs_attr_leafblock *leaf);
113 void xfs_attr_trace_enter(int type, char *where,
114 __psunsigned_t a2, __psunsigned_t a3,
115 __psunsigned_t a4, __psunsigned_t a5,
116 __psunsigned_t a6, __psunsigned_t a7,
117 __psunsigned_t a8, __psunsigned_t a9,
118 __psunsigned_t a10, __psunsigned_t a11,
119 __psunsigned_t a12, __psunsigned_t a13,
120 __psunsigned_t a14, __psunsigned_t a15);
122 #define xfs_attr_trace_l_c(w,c)
123 #define xfs_attr_trace_l_cn(w,c,n)
124 #define xfs_attr_trace_l_cb(w,c,b)
125 #define xfs_attr_trace_l_cl(w,c,l)
126 #endif /* XFS_ATTR_TRACE */
128 #endif /* __XFS_ATTR_SF_H__ */