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1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * xattr.h
5 *
6 * Copyright (C) 2004, 2008 Oracle. All rights reserved.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public
10 * License version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18#ifndef OCFS2_XATTR_H
19#define OCFS2_XATTR_H
20
21#include <linux/init.h>
22#include <linux/xattr.h>
23
24enum ocfs2_xattr_type {
25 OCFS2_XATTR_INDEX_USER = 1,
26 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
27 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
28 OCFS2_XATTR_INDEX_TRUSTED,
29 OCFS2_XATTR_INDEX_SECURITY,
30 OCFS2_XATTR_MAX
31};
32
33struct ocfs2_security_xattr_info {
34 int enable;
35 char *name;
36 void *value;
37 size_t value_len;
38};
39
40extern const struct xattr_handler ocfs2_xattr_user_handler;
41extern const struct xattr_handler ocfs2_xattr_trusted_handler;
42extern const struct xattr_handler ocfs2_xattr_security_handler;
43extern const struct xattr_handler ocfs2_xattr_acl_access_handler;
44extern const struct xattr_handler ocfs2_xattr_acl_default_handler;
45extern const struct xattr_handler *ocfs2_xattr_handlers[];
46
47ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
48int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
49 const char *, void *, size_t);
50int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
51 size_t, int);
52int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
53 int, const char *, const void *, size_t, int,
54 struct ocfs2_alloc_context *,
55 struct ocfs2_alloc_context *);
56int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
57 struct ocfs2_dinode *di);
58int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
59int ocfs2_init_security_get(struct inode *, struct inode *,
60 const struct qstr *,
61 struct ocfs2_security_xattr_info *);
62int ocfs2_init_security_set(handle_t *, struct inode *,
63 struct buffer_head *,
64 struct ocfs2_security_xattr_info *,
65 struct ocfs2_alloc_context *,
66 struct ocfs2_alloc_context *);
67int ocfs2_calc_security_init(struct inode *,
68 struct ocfs2_security_xattr_info *,
69 int *, int *, struct ocfs2_alloc_context **);
70int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
71 int, struct ocfs2_security_xattr_info *,
72 int *, int *, int *);
73
74/*
75 * xattrs can live inside an inode, as part of an external xattr block,
76 * or inside an xattr bucket, which is the leaf of a tree rooted in an
77 * xattr block. Some of the xattr calls, especially the value setting
78 * functions, want to treat each of these locations as equal. Let's wrap
79 * them in a structure that we can pass around instead of raw buffer_heads.
80 */
81struct ocfs2_xattr_value_buf {
82 struct buffer_head *vb_bh;
83 ocfs2_journal_access_func vb_access;
84 struct ocfs2_xattr_value_root *vb_xv;
85};
86
87int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
88 struct buffer_head *fe_bh,
89 struct ocfs2_caching_info *ref_ci,
90 struct buffer_head *ref_root_bh,
91 struct ocfs2_cached_dealloc_ctxt *dealloc);
92int ocfs2_reflink_xattrs(struct inode *old_inode,
93 struct buffer_head *old_bh,
94 struct inode *new_inode,
95 struct buffer_head *new_bh,
96 bool preserve_security);
97int ocfs2_init_security_and_acl(struct inode *dir,
98 struct inode *inode,
99 const struct qstr *qstr);
100#endif /* OCFS2_XATTR_H */
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
14enum 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
23struct ocfs2_security_xattr_info {
24 int enable;
25 const char *name;
26 void *value;
27 size_t value_len;
28};
29
30extern const struct xattr_handler ocfs2_xattr_user_handler;
31extern const struct xattr_handler ocfs2_xattr_trusted_handler;
32extern const struct xattr_handler ocfs2_xattr_security_handler;
33extern const struct xattr_handler * const ocfs2_xattr_handlers[];
34
35ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
36int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
37 const char *, void *, size_t);
38int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
39 size_t, int);
40int 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 *);
44int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
45 struct ocfs2_dinode *di);
46int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
47int ocfs2_init_security_get(struct inode *, struct inode *,
48 const struct qstr *,
49 struct ocfs2_security_xattr_info *);
50int 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 *);
55int ocfs2_calc_security_init(struct inode *,
56 struct ocfs2_security_xattr_info *,
57 int *, int *, struct ocfs2_alloc_context **);
58int 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 */
69struct 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
75int 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);
80int 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);
85int ocfs2_init_security_and_acl(struct inode *dir,
86 struct inode *inode,
87 const struct qstr *qstr);
88#endif /* OCFS2_XATTR_H */