diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/ext3/xattr.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/ext3/xattr.h')
-rw-r--r-- | fs/ext3/xattr.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/fs/ext3/xattr.h b/fs/ext3/xattr.h new file mode 100644 index 000000000000..eb31a69e82dc --- /dev/null +++ b/fs/ext3/xattr.h | |||
@@ -0,0 +1,135 @@ | |||
1 | /* | ||
2 | File: fs/ext3/xattr.h | ||
3 | |||
4 | On-disk format of extended attributes for the ext3 filesystem. | ||
5 | |||
6 | (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org> | ||
7 | */ | ||
8 | |||
9 | #include <linux/config.h> | ||
10 | #include <linux/xattr.h> | ||
11 | |||
12 | /* Magic value in attribute blocks */ | ||
13 | #define EXT3_XATTR_MAGIC 0xEA020000 | ||
14 | |||
15 | /* Maximum number of references to one attribute block */ | ||
16 | #define EXT3_XATTR_REFCOUNT_MAX 1024 | ||
17 | |||
18 | /* Name indexes */ | ||
19 | #define EXT3_XATTR_INDEX_USER 1 | ||
20 | #define EXT3_XATTR_INDEX_POSIX_ACL_ACCESS 2 | ||
21 | #define EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT 3 | ||
22 | #define EXT3_XATTR_INDEX_TRUSTED 4 | ||
23 | #define EXT3_XATTR_INDEX_LUSTRE 5 | ||
24 | #define EXT3_XATTR_INDEX_SECURITY 6 | ||
25 | |||
26 | struct ext3_xattr_header { | ||
27 | __le32 h_magic; /* magic number for identification */ | ||
28 | __le32 h_refcount; /* reference count */ | ||
29 | __le32 h_blocks; /* number of disk blocks used */ | ||
30 | __le32 h_hash; /* hash value of all attributes */ | ||
31 | __u32 h_reserved[4]; /* zero right now */ | ||
32 | }; | ||
33 | |||
34 | struct ext3_xattr_ibody_header { | ||
35 | __le32 h_magic; /* magic number for identification */ | ||
36 | }; | ||
37 | |||
38 | struct ext3_xattr_entry { | ||
39 | __u8 e_name_len; /* length of name */ | ||
40 | __u8 e_name_index; /* attribute name index */ | ||
41 | __le16 e_value_offs; /* offset in disk block of value */ | ||
42 | __le32 e_value_block; /* disk block attribute is stored on (n/i) */ | ||
43 | __le32 e_value_size; /* size of attribute value */ | ||
44 | __le32 e_hash; /* hash value of name and value */ | ||
45 | char e_name[0]; /* attribute name */ | ||
46 | }; | ||
47 | |||
48 | #define EXT3_XATTR_PAD_BITS 2 | ||
49 | #define EXT3_XATTR_PAD (1<<EXT3_XATTR_PAD_BITS) | ||
50 | #define EXT3_XATTR_ROUND (EXT3_XATTR_PAD-1) | ||
51 | #define EXT3_XATTR_LEN(name_len) \ | ||
52 | (((name_len) + EXT3_XATTR_ROUND + \ | ||
53 | sizeof(struct ext3_xattr_entry)) & ~EXT3_XATTR_ROUND) | ||
54 | #define EXT3_XATTR_NEXT(entry) \ | ||
55 | ( (struct ext3_xattr_entry *)( \ | ||
56 | (char *)(entry) + EXT3_XATTR_LEN((entry)->e_name_len)) ) | ||
57 | #define EXT3_XATTR_SIZE(size) \ | ||
58 | (((size) + EXT3_XATTR_ROUND) & ~EXT3_XATTR_ROUND) | ||
59 | |||
60 | # ifdef CONFIG_EXT3_FS_XATTR | ||
61 | |||
62 | extern struct xattr_handler ext3_xattr_user_handler; | ||
63 | extern struct xattr_handler ext3_xattr_trusted_handler; | ||
64 | extern struct xattr_handler ext3_xattr_acl_access_handler; | ||
65 | extern struct xattr_handler ext3_xattr_acl_default_handler; | ||
66 | extern struct xattr_handler ext3_xattr_security_handler; | ||
67 | |||
68 | extern ssize_t ext3_listxattr(struct dentry *, char *, size_t); | ||
69 | |||
70 | extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t); | ||
71 | extern int ext3_xattr_list(struct inode *, char *, size_t); | ||
72 | extern int ext3_xattr_set(struct inode *, int, const char *, const void *, size_t, int); | ||
73 | extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int); | ||
74 | |||
75 | extern void ext3_xattr_delete_inode(handle_t *, struct inode *); | ||
76 | extern void ext3_xattr_put_super(struct super_block *); | ||
77 | |||
78 | extern int init_ext3_xattr(void); | ||
79 | extern void exit_ext3_xattr(void); | ||
80 | |||
81 | extern struct xattr_handler *ext3_xattr_handlers[]; | ||
82 | |||
83 | # else /* CONFIG_EXT3_FS_XATTR */ | ||
84 | |||
85 | static inline int | ||
86 | ext3_xattr_get(struct inode *inode, int name_index, const char *name, | ||
87 | void *buffer, size_t size, int flags) | ||
88 | { | ||
89 | return -EOPNOTSUPP; | ||
90 | } | ||
91 | |||
92 | static inline int | ||
93 | ext3_xattr_list(struct inode *inode, void *buffer, size_t size) | ||
94 | { | ||
95 | return -EOPNOTSUPP; | ||
96 | } | ||
97 | |||
98 | static inline int | ||
99 | ext3_xattr_set(struct inode *inode, int name_index, const char *name, | ||
100 | const void *value, size_t size, int flags) | ||
101 | { | ||
102 | return -EOPNOTSUPP; | ||
103 | } | ||
104 | |||
105 | static inline int | ||
106 | ext3_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, | ||
107 | const char *name, const void *value, size_t size, int flags) | ||
108 | { | ||
109 | return -EOPNOTSUPP; | ||
110 | } | ||
111 | |||
112 | static inline void | ||
113 | ext3_xattr_delete_inode(handle_t *handle, struct inode *inode) | ||
114 | { | ||
115 | } | ||
116 | |||
117 | static inline void | ||
118 | ext3_xattr_put_super(struct super_block *sb) | ||
119 | { | ||
120 | } | ||
121 | |||
122 | static inline int | ||
123 | init_ext3_xattr(void) | ||
124 | { | ||
125 | return 0; | ||
126 | } | ||
127 | |||
128 | static inline void | ||
129 | exit_ext3_xattr(void) | ||
130 | { | ||
131 | } | ||
132 | |||
133 | #define ext3_xattr_handlers NULL | ||
134 | |||
135 | # endif /* CONFIG_EXT3_FS_XATTR */ | ||