1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * xattr.h
4 *
5 * Copyright (C) 2004, 2008 Oracle. All rights reserved.
6 */
7
8 #ifndef OCFS2_XATTR_H
9 #define OCFS2_XATTR_H
10
11 #include <linux/init.h>
12 #include <linux/xattr.h>
13
14 enum ocfs2_xattr_type {
15 OCFS2_XATTR_INDEX_USER = 1,
16 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
17 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
18 OCFS2_XATTR_INDEX_TRUSTED,
19 OCFS2_XATTR_INDEX_SECURITY,
20 OCFS2_XATTR_MAX
21 };
22
23 struct ocfs2_security_xattr_info {
24 int enable;
25 const char *name;
26 void *value;
27 size_t value_len;
28 };
29
30 extern const struct xattr_handler ocfs2_xattr_user_handler;
31 extern const struct xattr_handler ocfs2_xattr_trusted_handler;
32 extern const struct xattr_handler ocfs2_xattr_security_handler;
33 extern const struct xattr_handler * const ocfs2_xattr_handlers[];
34
35 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
36 int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
37 const char *, void *, size_t);
38 int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
39 size_t, int);
40 int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
41 int, const char *, const void *, size_t, int,
42 struct ocfs2_alloc_context *,
43 struct ocfs2_alloc_context *);
44 int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
45 struct ocfs2_dinode *di);
46 int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
47 int ocfs2_init_security_get(struct inode *, struct inode *,
48 const struct qstr *,
49 struct ocfs2_security_xattr_info *);
50 int ocfs2_init_security_set(handle_t *, struct inode *,
51 struct buffer_head *,
52 struct ocfs2_security_xattr_info *,
53 struct ocfs2_alloc_context *,
54 struct ocfs2_alloc_context *);
55 int ocfs2_calc_security_init(struct inode *,
56 struct ocfs2_security_xattr_info *,
57 int *, int *, struct ocfs2_alloc_context **);
58 int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
59 umode_t, struct ocfs2_security_xattr_info *,
60 int *, int *, int *);
61
62 /*
63 * xattrs can live inside an inode, as part of an external xattr block,
64 * or inside an xattr bucket, which is the leaf of a tree rooted in an
65 * xattr block. Some of the xattr calls, especially the value setting
66 * functions, want to treat each of these locations as equal. Let's wrap
67 * them in a structure that we can pass around instead of raw buffer_heads.
68 */
69 struct ocfs2_xattr_value_buf {
70 struct buffer_head *vb_bh;
71 ocfs2_journal_access_func vb_access;
72 struct ocfs2_xattr_value_root *vb_xv;
73 };
74
75 int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
76 struct buffer_head *fe_bh,
77 struct ocfs2_caching_info *ref_ci,
78 struct buffer_head *ref_root_bh,
79 struct ocfs2_cached_dealloc_ctxt *dealloc);
80 int ocfs2_reflink_xattrs(struct inode *old_inode,
81 struct buffer_head *old_bh,
82 struct inode *new_inode,
83 struct buffer_head *new_bh,
84 bool preserve_security);
85 int ocfs2_init_security_and_acl(struct inode *dir,
86 struct inode *inode,
87 const struct qstr *qstr);
88 #endif /* OCFS2_XATTR_H */
89
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