1
2#include <linux/reiserfs_xattr.h>
3#include <linux/init.h>
4#include <linux/list.h>
5#include <linux/rwsem.h>
6#include <linux/xattr.h>
7
8struct inode;
9struct dentry;
10struct iattr;
11struct super_block;
12
13int reiserfs_xattr_register_handlers(void) __init;
14void reiserfs_xattr_unregister_handlers(void);
15int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
16int reiserfs_lookup_privroot(struct super_block *sb);
17int reiserfs_delete_xattrs(struct inode *inode);
18int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
19int reiserfs_permission(struct inode *inode, int mask);
20
21#ifdef CONFIG_REISERFS_FS_XATTR
22#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
23ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
24
25int reiserfs_xattr_get(struct inode *, const char *, void *, size_t);
26int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
27int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *,
28 struct inode *, const char *, const void *,
29 size_t, int);
30
31extern const struct xattr_handler reiserfs_xattr_user_handler;
32extern const struct xattr_handler reiserfs_xattr_trusted_handler;
33extern const struct xattr_handler reiserfs_xattr_security_handler;
34#ifdef CONFIG_REISERFS_FS_SECURITY
35int reiserfs_security_init(struct inode *dir, struct inode *inode,
36 const struct qstr *qstr,
37 struct reiserfs_security_handle *sec);
38int reiserfs_security_write(struct reiserfs_transaction_handle *th,
39 struct inode *inode,
40 struct reiserfs_security_handle *sec);
41void reiserfs_security_free(struct reiserfs_security_handle *sec);
42#endif
43
44static inline int reiserfs_xattrs_initialized(struct super_block *sb)
45{
46 return REISERFS_SB(sb)->priv_root != NULL;
47}
48
49#define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header))
50static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
51{
52 loff_t ret = 0;
53 if (reiserfs_file_data_log(inode)) {
54 ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize);
55 ret >>= inode->i_sb->s_blocksize_bits;
56 }
57 return ret;
58}
59
60
61
62
63
64
65
66
67
68
69
70
71
72static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
73{
74 size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
75
76 if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
77 nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
78 if (d_really_is_negative(REISERFS_SB(inode->i_sb)->xattr_root))
79 nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
80 }
81
82 return nblocks;
83}
84
85static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
86{
87 init_rwsem(&REISERFS_I(inode)->i_xattr_sem);
88}
89
90#else
91
92#define reiserfs_listxattr NULL
93
94static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
95{
96}
97#endif
98
99#ifndef CONFIG_REISERFS_FS_SECURITY
100static inline int reiserfs_security_init(struct inode *dir,
101 struct inode *inode,
102 const struct qstr *qstr,
103 struct reiserfs_security_handle *sec)
104{
105 return 0;
106}
107static inline int
108reiserfs_security_write(struct reiserfs_transaction_handle *th,
109 struct inode *inode,
110 struct reiserfs_security_handle *sec)
111{
112 return 0;
113}
114static inline void reiserfs_security_free(struct reiserfs_security_handle *sec)
115{}
116#endif
117