Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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/* Namespaces */
17#define XATTR_OS2_PREFIX "os2."
18#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
19
20#define XATTR_SECURITY_PREFIX "security."
21#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
22
23#define XATTR_SYSTEM_PREFIX "system."
24#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
25
26#define XATTR_TRUSTED_PREFIX "trusted."
27#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
28
29#define XATTR_USER_PREFIX "user."
30#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
31
32
33struct xattr_handler {
34 char *prefix;
35 size_t (*list)(struct inode *inode, char *list, size_t list_size,
36 const char *name, size_t name_len);
37 int (*get)(struct inode *inode, const char *name, void *buffer,
38 size_t size);
39 int (*set)(struct inode *inode, const char *name, const void *buffer,
40 size_t size, int flags);
41};
42
43ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t);
44int vfs_setxattr(struct dentry *, char *, void *, size_t, int);
45int vfs_removexattr(struct dentry *, char *);
46
47ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
48ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
49int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
50int generic_removexattr(struct dentry *dentry, const char *name);
51
52#endif /* _LINUX_XATTR_H */