]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/xattr.h
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
14 #include <linux/slab.h>
15 #include <linux/types.h>
16 #include <linux/spinlock.h>
17 #include <uapi/linux/xattr.h>
22 struct xattr_handler
{
24 int flags
; /* fs private flags */
25 size_t (*list
)(const struct xattr_handler
*, struct dentry
*dentry
,
26 char *list
, size_t list_size
, const char *name
,
28 int (*get
)(const struct xattr_handler
*, struct dentry
*dentry
,
29 const char *name
, void *buffer
, size_t size
);
30 int (*set
)(const struct xattr_handler
*, struct dentry
*dentry
,
31 const char *name
, const void *buffer
, size_t size
,
35 const char *xattr_full_name(const struct xattr_handler
*, const char *);
43 ssize_t
xattr_getsecurity(struct inode
*, const char *, void *, size_t);
44 ssize_t
vfs_getxattr(struct dentry
*, const char *, void *, size_t);
45 ssize_t
vfs_listxattr(struct dentry
*d
, char *list
, size_t size
);
46 int __vfs_setxattr_noperm(struct dentry
*, const char *, const void *, size_t, int);
47 int vfs_setxattr(struct dentry
*, const char *, const void *, size_t, int);
48 int vfs_removexattr(struct dentry
*, const char *);
50 ssize_t
generic_getxattr(struct dentry
*dentry
, const char *name
, void *buffer
, size_t size
);
51 ssize_t
generic_listxattr(struct dentry
*dentry
, char *buffer
, size_t buffer_size
);
52 int generic_setxattr(struct dentry
*dentry
, const char *name
, const void *value
, size_t size
, int flags
);
53 int generic_removexattr(struct dentry
*dentry
, const char *name
);
54 ssize_t
vfs_getxattr_alloc(struct dentry
*dentry
, const char *name
,
55 char **xattr_value
, size_t size
, gfp_t flags
);
56 int vfs_xattr_cmp(struct dentry
*dentry
, const char *xattr_name
,
57 const char *value
, size_t size
, gfp_t flags
);
59 struct simple_xattrs
{
60 struct list_head head
;
65 struct list_head list
;
72 * initialize the simple_xattrs structure
74 static inline void simple_xattrs_init(struct simple_xattrs
*xattrs
)
76 INIT_LIST_HEAD(&xattrs
->head
);
77 spin_lock_init(&xattrs
->lock
);
83 static inline void simple_xattrs_free(struct simple_xattrs
*xattrs
)
85 struct simple_xattr
*xattr
, *node
;
87 list_for_each_entry_safe(xattr
, node
, &xattrs
->head
, list
) {
93 struct simple_xattr
*simple_xattr_alloc(const void *value
, size_t size
);
94 int simple_xattr_get(struct simple_xattrs
*xattrs
, const char *name
,
95 void *buffer
, size_t size
);
96 int simple_xattr_set(struct simple_xattrs
*xattrs
, const char *name
,
97 const void *value
, size_t size
, int flags
);
98 int simple_xattr_remove(struct simple_xattrs
*xattrs
, const char *name
);
99 ssize_t
simple_xattr_list(struct simple_xattrs
*xattrs
, char *buffer
,
101 void simple_xattr_list_add(struct simple_xattrs
*xattrs
,
102 struct simple_xattr
*new_xattr
);
104 #endif /* _LINUX_XATTR_H */