1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 /* -*- mode: c; c-basic-offset: 8; -*-
2 /* !! 2 * vim: noexpandtab sw=8 ts=8 sts=0:
>> 3 *
3 * xattr.h 4 * xattr.h
4 * 5 *
5 * Copyright (C) 2004, 2008 Oracle. All right 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.
6 */ 16 */
7 17
8 #ifndef OCFS2_XATTR_H 18 #ifndef OCFS2_XATTR_H
9 #define OCFS2_XATTR_H 19 #define OCFS2_XATTR_H
10 20
11 #include <linux/init.h> 21 #include <linux/init.h>
12 #include <linux/xattr.h> 22 #include <linux/xattr.h>
13 23
14 enum ocfs2_xattr_type { 24 enum ocfs2_xattr_type {
15 OCFS2_XATTR_INDEX_USER = 1, 25 OCFS2_XATTR_INDEX_USER = 1,
16 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS, 26 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
17 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT, 27 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
18 OCFS2_XATTR_INDEX_TRUSTED, 28 OCFS2_XATTR_INDEX_TRUSTED,
19 OCFS2_XATTR_INDEX_SECURITY, 29 OCFS2_XATTR_INDEX_SECURITY,
20 OCFS2_XATTR_MAX 30 OCFS2_XATTR_MAX
21 }; 31 };
22 32
23 struct ocfs2_security_xattr_info { 33 struct ocfs2_security_xattr_info {
24 int enable; 34 int enable;
25 const char *name; 35 const char *name;
26 void *value; 36 void *value;
27 size_t value_len; 37 size_t value_len;
28 }; 38 };
29 39
30 extern const struct xattr_handler ocfs2_xattr_ 40 extern const struct xattr_handler ocfs2_xattr_user_handler;
31 extern const struct xattr_handler ocfs2_xattr_ 41 extern const struct xattr_handler ocfs2_xattr_trusted_handler;
32 extern const struct xattr_handler ocfs2_xattr_ 42 extern const struct xattr_handler ocfs2_xattr_security_handler;
33 extern const struct xattr_handler * const ocfs !! 43 extern const struct xattr_handler *ocfs2_xattr_handlers[];
34 44
35 ssize_t ocfs2_listxattr(struct dentry *, char 45 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
36 int ocfs2_xattr_get_nolock(struct inode *, str 46 int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
37 const char *, void 47 const char *, void *, size_t);
38 int ocfs2_xattr_set(struct inode *, int, const 48 int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
39 size_t, int); 49 size_t, int);
40 int ocfs2_xattr_set_handle(handle_t *, struct 50 int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
41 int, const char *, 51 int, const char *, const void *, size_t, int,
42 struct ocfs2_alloc_ 52 struct ocfs2_alloc_context *,
43 struct ocfs2_alloc_ 53 struct ocfs2_alloc_context *);
44 int ocfs2_has_inline_xattr_value_outside(struc 54 int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
45 struc 55 struct ocfs2_dinode *di);
46 int ocfs2_xattr_remove(struct inode *, struct 56 int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
47 int ocfs2_init_security_get(struct inode *, st 57 int ocfs2_init_security_get(struct inode *, struct inode *,
48 const struct qstr 58 const struct qstr *,
49 struct ocfs2_secur 59 struct ocfs2_security_xattr_info *);
50 int ocfs2_init_security_set(handle_t *, struct 60 int ocfs2_init_security_set(handle_t *, struct inode *,
51 struct buffer_head 61 struct buffer_head *,
52 struct ocfs2_secur 62 struct ocfs2_security_xattr_info *,
53 struct ocfs2_alloc 63 struct ocfs2_alloc_context *,
54 struct ocfs2_alloc 64 struct ocfs2_alloc_context *);
55 int ocfs2_calc_security_init(struct inode *, 65 int ocfs2_calc_security_init(struct inode *,
56 struct ocfs2_secu 66 struct ocfs2_security_xattr_info *,
57 int *, int *, str 67 int *, int *, struct ocfs2_alloc_context **);
58 int ocfs2_calc_xattr_init(struct inode *, stru 68 int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
59 umode_t, struct ocfs 69 umode_t, struct ocfs2_security_xattr_info *,
60 int *, int *, int *) 70 int *, int *, int *);
61 71
62 /* 72 /*
63 * xattrs can live inside an inode, as part of 73 * xattrs can live inside an inode, as part of an external xattr block,
64 * or inside an xattr bucket, which is the lea 74 * or inside an xattr bucket, which is the leaf of a tree rooted in an
65 * xattr block. Some of the xattr calls, espe 75 * xattr block. Some of the xattr calls, especially the value setting
66 * functions, want to treat each of these loca 76 * functions, want to treat each of these locations as equal. Let's wrap
67 * them in a structure that we can pass around 77 * them in a structure that we can pass around instead of raw buffer_heads.
68 */ 78 */
69 struct ocfs2_xattr_value_buf { 79 struct ocfs2_xattr_value_buf {
70 struct buffer_head *vb_bh 80 struct buffer_head *vb_bh;
71 ocfs2_journal_access_func vb_acc 81 ocfs2_journal_access_func vb_access;
72 struct ocfs2_xattr_value_root *vb_xv 82 struct ocfs2_xattr_value_root *vb_xv;
73 }; 83 };
74 84
75 int ocfs2_xattr_attach_refcount_tree(struct in 85 int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
76 struct bu 86 struct buffer_head *fe_bh,
77 struct oc 87 struct ocfs2_caching_info *ref_ci,
78 struct bu 88 struct buffer_head *ref_root_bh,
79 struct oc 89 struct ocfs2_cached_dealloc_ctxt *dealloc);
80 int ocfs2_reflink_xattrs(struct inode *old_ino 90 int ocfs2_reflink_xattrs(struct inode *old_inode,
81 struct buffer_head *o 91 struct buffer_head *old_bh,
82 struct inode *new_ino 92 struct inode *new_inode,
83 struct buffer_head *n 93 struct buffer_head *new_bh,
84 bool preserve_securit 94 bool preserve_security);
85 int ocfs2_init_security_and_acl(struct inode * 95 int ocfs2_init_security_and_acl(struct inode *dir,
86 struct inode * 96 struct inode *inode,
87 const struct q 97 const struct qstr *qstr);
88 #endif /* OCFS2_XATTR_H */ 98 #endif /* OCFS2_XATTR_H */
89 99
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