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1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Copyright (C) 2011 Lawrence Livermore National Security, LLC. | |
24 | */ | |
25 | ||
26 | #ifndef _ZFS_XATTR_H | |
d1d7e268 | 27 | #define _ZFS_XATTR_H |
777d4af8 | 28 | |
023699cd MM |
29 | #include <linux/posix_acl_xattr.h> |
30 | ||
777d4af8 BB |
31 | /* |
32 | * 2.6.35 API change, | |
33 | * The const keyword was added to the 'struct xattr_handler' in the | |
34 | * generic Linux super_block structure. To handle this we define an | |
35 | * appropriate xattr_handler_t typedef which can be used. This was | |
36 | * the preferred solution because it keeps the code clean and readable. | |
37 | */ | |
38 | #ifdef HAVE_CONST_XATTR_HANDLER | |
39 | typedef const struct xattr_handler xattr_handler_t; | |
40 | #else | |
41 | typedef struct xattr_handler xattr_handler_t; | |
42 | #endif | |
43 | ||
f9637c6c BB |
44 | /* |
45 | * 2.6.33 API change, | |
46 | * The xattr_hander->get() callback was changed to take a dentry | |
47 | * instead of an inode, and a handler_flags argument was added. | |
48 | */ | |
49 | #ifdef HAVE_DENTRY_XATTR_GET | |
d1d7e268 | 50 | #define ZPL_XATTR_GET_WRAPPER(fn) \ |
f9637c6c BB |
51 | static int \ |
52 | fn(struct dentry *dentry, const char *name, void *buffer, size_t size, \ | |
53 | int unused_handler_flags) \ | |
54 | { \ | |
d1d7e268 | 55 | return (__ ## fn(dentry->d_inode, name, buffer, size)); \ |
f9637c6c BB |
56 | } |
57 | #else | |
d1d7e268 | 58 | #define ZPL_XATTR_GET_WRAPPER(fn) \ |
f9637c6c BB |
59 | static int \ |
60 | fn(struct inode *ip, const char *name, void *buffer, size_t size) \ | |
61 | { \ | |
d1d7e268 | 62 | return (__ ## fn(ip, name, buffer, size)); \ |
f9637c6c BB |
63 | } |
64 | #endif /* HAVE_DENTRY_XATTR_GET */ | |
65 | ||
66 | /* | |
67 | * 2.6.33 API change, | |
68 | * The xattr_hander->set() callback was changed to take a dentry | |
69 | * instead of an inode, and a handler_flags argument was added. | |
70 | */ | |
71 | #ifdef HAVE_DENTRY_XATTR_SET | |
d1d7e268 | 72 | #define ZPL_XATTR_SET_WRAPPER(fn) \ |
f9637c6c BB |
73 | static int \ |
74 | fn(struct dentry *dentry, const char *name, const void *buffer, \ | |
75 | size_t size, int flags, int unused_handler_flags) \ | |
76 | { \ | |
d1d7e268 | 77 | return (__ ## fn(dentry->d_inode, name, buffer, size, flags)); \ |
f9637c6c BB |
78 | } |
79 | #else | |
d1d7e268 | 80 | #define ZPL_XATTR_SET_WRAPPER(fn) \ |
f9637c6c BB |
81 | static int \ |
82 | fn(struct inode *ip, const char *name, const void *buffer, \ | |
83 | size_t size, int flags) \ | |
84 | { \ | |
d1d7e268 | 85 | return (__ ## fn(ip, name, buffer, size, flags)); \ |
f9637c6c BB |
86 | } |
87 | #endif /* HAVE_DENTRY_XATTR_SET */ | |
88 | ||
5c03efc3 | 89 | #ifdef HAVE_6ARGS_SECURITY_INODE_INIT_SECURITY |
d1d7e268 | 90 | #define zpl_security_inode_init_security(ip, dip, qstr, nm, val, len) \ |
5c03efc3 BB |
91 | security_inode_init_security(ip, dip, qstr, nm, val, len) |
92 | #else | |
d1d7e268 | 93 | #define zpl_security_inode_init_security(ip, dip, qstr, nm, val, len) \ |
5c03efc3 BB |
94 | security_inode_init_security(ip, dip, nm, val, len) |
95 | #endif /* HAVE_6ARGS_SECURITY_INODE_INIT_SECURITY */ | |
96 | ||
023699cd MM |
97 | /* |
98 | * Linux 3.7 API change. posix_acl_{from,to}_xattr gained the user_ns | |
99 | * parameter. For the HAVE_POSIX_ACL_FROM_XATTR_USERNS version the | |
100 | * userns _may_ not be correct because it's used outside the RCU. | |
101 | */ | |
102 | #ifdef HAVE_POSIX_ACL_FROM_XATTR_USERNS | |
103 | static inline struct posix_acl * | |
104 | zpl_acl_from_xattr(const void *value, int size) | |
105 | { | |
d1d7e268 | 106 | return (posix_acl_from_xattr(CRED()->user_ns, value, size)); |
023699cd MM |
107 | } |
108 | ||
109 | static inline int | |
110 | zpl_acl_to_xattr(struct posix_acl *acl, void *value, int size) | |
111 | { | |
d1d7e268 | 112 | return (posix_acl_to_xattr(CRED()->user_ns, acl, value, size)); |
023699cd MM |
113 | } |
114 | ||
115 | #else | |
116 | ||
117 | static inline struct posix_acl * | |
d1d7e268 | 118 | zpl_acl_from_xattr(const void *value, int size) |
023699cd | 119 | { |
d1d7e268 | 120 | return (posix_acl_from_xattr(value, size)); |
023699cd MM |
121 | } |
122 | ||
123 | static inline int | |
124 | zpl_acl_to_xattr(struct posix_acl *acl, void *value, int size) | |
125 | { | |
d1d7e268 | 126 | return (posix_acl_to_xattr(acl, value, size)); |
023699cd MM |
127 | } |
128 | #endif /* HAVE_POSIX_ACL_FROM_XATTR_USERNS */ | |
129 | ||
777d4af8 | 130 | #endif /* _ZFS_XATTR_H */ |