4 Extended attributes handling.
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>
10 #ifndef _LINUX_XATTR_H
11 #define _LINUX_XATTR_H
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 */
18 #include <linux/types.h>
21 #define XATTR_OS2_PREFIX "os2."
22 #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
24 #define XATTR_SECURITY_PREFIX "security."
25 #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
27 #define XATTR_SYSTEM_PREFIX "system."
28 #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
30 #define XATTR_TRUSTED_PREFIX "trusted."
31 #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
33 #define XATTR_USER_PREFIX "user."
34 #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
39 struct xattr_handler {
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);
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 *);
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);
62 #endif /* __KERNEL__ */
64 #endif /* _LINUX_XATTR_H */