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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 const 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_handlers[];
44
45ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
46int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
47 const char *, void *, size_t);
48int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
49 size_t, int);
50int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
51 int, const char *, const void *, size_t, int,
52 struct ocfs2_alloc_context *,
53 struct ocfs2_alloc_context *);
54int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
55 struct ocfs2_dinode *di);
56int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
57int ocfs2_init_security_get(struct inode *, struct inode *,
58 const struct qstr *,
59 struct ocfs2_security_xattr_info *);
60int ocfs2_init_security_set(handle_t *, struct inode *,
61 struct buffer_head *,
62 struct ocfs2_security_xattr_info *,
63 struct ocfs2_alloc_context *,
64 struct ocfs2_alloc_context *);
65int ocfs2_calc_security_init(struct inode *,
66 struct ocfs2_security_xattr_info *,
67 int *, int *, struct ocfs2_alloc_context **);
68int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
69 umode_t, struct ocfs2_security_xattr_info *,
70 int *, int *, int *);
71
72/*
73 * xattrs can live inside an inode, as part of an external xattr block,
74 * or inside an xattr bucket, which is the leaf of a tree rooted in an
75 * xattr block. Some of the xattr calls, especially the value setting
76 * functions, want to treat each of these locations as equal. Let's wrap
77 * them in a structure that we can pass around instead of raw buffer_heads.
78 */
79struct ocfs2_xattr_value_buf {
80 struct buffer_head *vb_bh;
81 ocfs2_journal_access_func vb_access;
82 struct ocfs2_xattr_value_root *vb_xv;
83};
84
85int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
86 struct buffer_head *fe_bh,
87 struct ocfs2_caching_info *ref_ci,
88 struct buffer_head *ref_root_bh,
89 struct ocfs2_cached_dealloc_ctxt *dealloc);
90int ocfs2_reflink_xattrs(struct inode *old_inode,
91 struct buffer_head *old_bh,
92 struct inode *new_inode,
93 struct buffer_head *new_bh,
94 bool preserve_security);
95int ocfs2_init_security_and_acl(struct inode *dir,
96 struct inode *inode,
97 const struct qstr *qstr);
98#endif /* OCFS2_XATTR_H */
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 umode_t, 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 */