Line data Source code
1 : /*
2 : File: linux/xattr.h
3 :
4 : Extended attributes handling.
5 :
6 : Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
7 : Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
8 : Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
9 : */
10 : #ifndef _LINUX_XATTR_H
11 : #define _LINUX_XATTR_H
12 :
13 : #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
14 : #define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
15 :
16 : #ifdef __KERNEL__
17 :
18 : #include <linux/types.h>
19 :
20 : /* Namespaces */
21 : #define XATTR_OS2_PREFIX "os2."
22 : #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
23 :
24 : #define XATTR_SECURITY_PREFIX "security."
25 : #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
26 :
27 : #define XATTR_SYSTEM_PREFIX "system."
28 : #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
29 :
30 : #define XATTR_TRUSTED_PREFIX "trusted."
31 : #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
32 :
33 : #define XATTR_USER_PREFIX "user."
34 : #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
35 :
36 : struct inode;
37 : struct dentry;
38 :
39 : struct xattr_handler {
40 : char *prefix;
41 : int flags; /* fs private flags passed back to the handlers */
42 : size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
43 : const char *name, size_t name_len, int handler_flags);
44 : int (*get)(struct dentry *dentry, const char *name, void *buffer,
45 : size_t size, int handler_flags);
46 : int (*set)(struct dentry *dentry, const char *name, const void *buffer,
47 : size_t size, int flags, int handler_flags);
48 : };
49 :
50 : ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
51 : ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
52 : ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
53 : int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
54 : int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
55 : int vfs_removexattr(struct dentry *, const char *);
56 :
57 : ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
58 : ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
59 : int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
60 : int generic_removexattr(struct dentry *dentry, const char *name);
61 1 :
62 : #endif /* __KERNEL__ */
63 :
64 : #endif /* _LINUX_XATTR_H */
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