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authorIngo Molnar <mingo@elte.hu>2008-08-13 07:08:47 -0400
committerIngo Molnar <mingo@elte.hu>2008-08-13 07:08:47 -0400
commita12e61df4fa1cfae7a6b76976fa65a6fcb048e3f (patch)
tree957c915298b299902aa80afa7c78e94c71b3dc25 /fs/xfs/xfs_attr.h
parent7b27718bdb1b70166383dec91391df5534d449ee (diff)
parent30a2f3c60a84092c8084dfe788b710f8d0768cd4 (diff)
Merge commit 'v2.6.27-rc3' into x86/urgent
Diffstat (limited to 'fs/xfs/xfs_attr.h')
-rw-r--r--fs/xfs/xfs_attr.h90
1 files changed, 30 insertions, 60 deletions
diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
index 6cfc9384fe35..8b2d31c19e4d 100644
--- a/fs/xfs/xfs_attr.h
+++ b/fs/xfs/xfs_attr.h
@@ -18,9 +18,11 @@
18#ifndef __XFS_ATTR_H__ 18#ifndef __XFS_ATTR_H__
19#define __XFS_ATTR_H__ 19#define __XFS_ATTR_H__
20 20
21struct xfs_inode;
22struct xfs_da_args;
23struct xfs_attr_list_context;
24
21/* 25/*
22 * xfs_attr.h
23 *
24 * Large attribute lists are structured around Btrees where all the data 26 * Large attribute lists are structured around Btrees where all the data
25 * elements are in the leaf nodes. Attribute names are hashed into an int, 27 * elements are in the leaf nodes. Attribute names are hashed into an int,
26 * then that int is used as the index into the Btree. Since the hashval 28 * then that int is used as the index into the Btree. Since the hashval
@@ -35,35 +37,6 @@
35 * External interfaces 37 * External interfaces
36 *========================================================================*/ 38 *========================================================================*/
37 39
38struct cred;
39struct xfs_attr_list_context;
40
41typedef int (*attrset_t)(bhv_vnode_t *, char *, void *, size_t, int);
42typedef int (*attrget_t)(bhv_vnode_t *, char *, void *, size_t, int);
43typedef int (*attrremove_t)(bhv_vnode_t *, char *, int);
44typedef int (*attrexists_t)(bhv_vnode_t *);
45typedef int (*attrcapable_t)(bhv_vnode_t *, struct cred *);
46
47typedef struct attrnames {
48 char * attr_name;
49 unsigned int attr_namelen;
50 unsigned int attr_flag;
51 attrget_t attr_get;
52 attrset_t attr_set;
53 attrremove_t attr_remove;
54 attrexists_t attr_exists;
55 attrcapable_t attr_capable;
56} attrnames_t;
57
58#define ATTR_NAMECOUNT 4
59extern struct attrnames attr_user;
60extern struct attrnames attr_secure;
61extern struct attrnames attr_system;
62extern struct attrnames attr_trusted;
63extern struct attrnames *attr_namespaces[ATTR_NAMECOUNT];
64
65extern attrnames_t *attr_lookup_namespace(char *, attrnames_t **, int);
66extern int attr_generic_list(bhv_vnode_t *, void *, size_t, int, ssize_t *);
67 40
68#define ATTR_DONTFOLLOW 0x0001 /* -- unused, from IRIX -- */ 41#define ATTR_DONTFOLLOW 0x0001 /* -- unused, from IRIX -- */
69#define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */ 42#define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */
@@ -71,16 +44,9 @@ extern int attr_generic_list(bhv_vnode_t *, void *, size_t, int, ssize_t *);
71#define ATTR_SECURE 0x0008 /* use attrs in security namespace */ 44#define ATTR_SECURE 0x0008 /* use attrs in security namespace */
72#define ATTR_CREATE 0x0010 /* pure create: fail if attr already exists */ 45#define ATTR_CREATE 0x0010 /* pure create: fail if attr already exists */
73#define ATTR_REPLACE 0x0020 /* pure set: fail if attr does not exist */ 46#define ATTR_REPLACE 0x0020 /* pure set: fail if attr does not exist */
74#define ATTR_SYSTEM 0x0100 /* use attrs in system (pseudo) namespace */
75 47
76#define ATTR_KERNACCESS 0x0400 /* [kernel] iaccess, inode held io-locked */
77#define ATTR_KERNOTIME 0x1000 /* [kernel] don't update inode timestamps */ 48#define ATTR_KERNOTIME 0x1000 /* [kernel] don't update inode timestamps */
78#define ATTR_KERNOVAL 0x2000 /* [kernel] get attr size only, not value */ 49#define ATTR_KERNOVAL 0x2000 /* [kernel] get attr size only, not value */
79#define ATTR_KERNAMELS 0x4000 /* [kernel] list attr names (simple list) */
80
81#define ATTR_KERNORMALS 0x0800 /* [kernel] normal attr list: user+secure */
82#define ATTR_KERNROOTLS 0x8000 /* [kernel] include root in the attr list */
83#define ATTR_KERNFULLS (ATTR_KERNORMALS|ATTR_KERNROOTLS)
84 50
85/* 51/*
86 * The maximum size (into the kernel or returned from the kernel) of an 52 * The maximum size (into the kernel or returned from the kernel) of an
@@ -119,22 +85,6 @@ typedef struct attrlist_ent { /* data from attr_list() */
119 &((char *)buffer)[ ((attrlist_t *)(buffer))->al_offset[index] ]) 85 &((char *)buffer)[ ((attrlist_t *)(buffer))->al_offset[index] ])
120 86
121/* 87/*
122 * Multi-attribute operation vector.
123 */
124typedef struct attr_multiop {
125 int am_opcode; /* operation to perform (ATTR_OP_GET, etc.) */
126 int am_error; /* [out arg] result of this sub-op (an errno) */
127 char *am_attrname; /* attribute name to work with */
128 char *am_attrvalue; /* [in/out arg] attribute value (raw bytes) */
129 int am_length; /* [in/out arg] length of value */
130 int am_flags; /* bitwise OR of attr API flags defined above */
131} attr_multiop_t;
132
133#define ATTR_OP_GET 1 /* return the indicated attr's value */
134#define ATTR_OP_SET 2 /* set/create the indicated attr/value pair */
135#define ATTR_OP_REMOVE 3 /* remove the indicated attr */
136
137/*
138 * Kernel-internal version of the attrlist cursor. 88 * Kernel-internal version of the attrlist cursor.
139 */ 89 */
140typedef struct attrlist_cursor_kern { 90typedef struct attrlist_cursor_kern {
@@ -148,20 +98,40 @@ typedef struct attrlist_cursor_kern {
148 98
149 99
150/*======================================================================== 100/*========================================================================
151 * Function prototypes for the kernel. 101 * Structure used to pass context around among the routines.
152 *========================================================================*/ 102 *========================================================================*/
153 103
154struct xfs_inode; 104
155struct attrlist_cursor_kern; 105typedef int (*put_listent_func_t)(struct xfs_attr_list_context *, int,
156struct xfs_da_args; 106 char *, int, int, char *);
107
108typedef struct xfs_attr_list_context {
109 struct xfs_inode *dp; /* inode */
110 struct attrlist_cursor_kern *cursor; /* position in list */
111 char *alist; /* output buffer */
112 int seen_enough; /* T/F: seen enough of list? */
113 ssize_t count; /* num used entries */
114 int dupcnt; /* count dup hashvals seen */
115 int bufsize; /* total buffer size */
116 int firstu; /* first used byte in buffer */
117 int flags; /* from VOP call */
118 int resynch; /* T/F: resynch with cursor */
119 int put_value; /* T/F: need value for listent */
120 put_listent_func_t put_listent; /* list output fmt function */
121 int index; /* index into output buffer */
122} xfs_attr_list_context_t;
123
124
125/*========================================================================
126 * Function prototypes for the kernel.
127 *========================================================================*/
157 128
158/* 129/*
159 * Overall external interface routines. 130 * Overall external interface routines.
160 */ 131 */
161int xfs_attr_inactive(struct xfs_inode *dp); 132int xfs_attr_inactive(struct xfs_inode *dp);
162
163int xfs_attr_shortform_getvalue(struct xfs_da_args *);
164int xfs_attr_fetch(struct xfs_inode *, struct xfs_name *, char *, int *, int); 133int xfs_attr_fetch(struct xfs_inode *, struct xfs_name *, char *, int *, int);
165int xfs_attr_rmtval_get(struct xfs_da_args *args); 134int xfs_attr_rmtval_get(struct xfs_da_args *args);
135int xfs_attr_list_int(struct xfs_attr_list_context *);
166 136
167#endif /* __XFS_ATTR_H__ */ 137#endif /* __XFS_ATTR_H__ */