Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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
36struct inode;
37struct dentry;
38
39struct xattr_handler {
40 char *prefix;
41 size_t (*list)(struct inode *inode, char *list, size_t list_size,
42 const char *name, size_t name_len);
43 int (*get)(struct inode *inode, const char *name, void *buffer,
44 size_t size);
45 int (*set)(struct inode *inode, const char *name, const void *buffer,
46 size_t size, int flags);
47};
48
49ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t);
50ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
51int vfs_setxattr(struct dentry *, char *, void *, size_t, int);
52int vfs_removexattr(struct dentry *, char *);
53
54ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
55ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
56int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
57int generic_removexattr(struct dentry *dentry, const char *name);
58
59#endif /* __KERNEL__ */
60
61#endif /* _LINUX_XATTR_H */