6d4e89b020c541216bf5b0e51d44e739e0d13e47
[linux-3.10.git] / include / linux / evm.h
1 /*
2  * evm.h
3  *
4  * Copyright (c) 2009 IBM Corporation
5  * Author: Mimi Zohar <zohar@us.ibm.com>
6  */
7
8 #ifndef _LINUX_EVM_H
9 #define _LINUX_EVM_H
10
11 #include <linux/integrity.h>
12 #include <linux/xattr.h>
13
14 struct integrity_iint_cache;
15
16 #ifdef CONFIG_EVM
17 extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
18                                              const char *xattr_name,
19                                              void *xattr_value,
20                                              size_t xattr_value_len,
21                                              struct integrity_iint_cache *iint);
22 extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);
23 extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
24                               const void *value, size_t size);
25 extern void evm_inode_post_setxattr(struct dentry *dentry,
26                                     const char *xattr_name,
27                                     const void *xattr_value,
28                                     size_t xattr_value_len);
29 extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name);
30 extern void evm_inode_post_removexattr(struct dentry *dentry,
31                                        const char *xattr_name);
32 extern int evm_inode_init_security(struct inode *inode,
33                                    const struct xattr *xattr_array,
34                                    struct xattr *evm);
35 #else
36 #ifdef CONFIG_INTEGRITY
37 static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
38                                                     const char *xattr_name,
39                                                     void *xattr_value,
40                                                     size_t xattr_value_len,
41                                         struct integrity_iint_cache *iint)
42 {
43         return INTEGRITY_UNKNOWN;
44 }
45 #endif
46
47 static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
48 {
49         return;
50 }
51
52 static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
53                                      const void *value, size_t size)
54 {
55         return 0;
56 }
57
58 static inline void evm_inode_post_setxattr(struct dentry *dentry,
59                                            const char *xattr_name,
60                                            const void *xattr_value,
61                                            size_t xattr_value_len)
62 {
63         return;
64 }
65
66 static inline int evm_inode_removexattr(struct dentry *dentry,
67                                         const char *xattr_name)
68 {
69         return 0;
70 }
71
72 static inline void evm_inode_post_removexattr(struct dentry *dentry,
73                                               const char *xattr_name)
74 {
75         return;
76 }
77
78 static inline int evm_inode_init_security(struct inode *inode,
79                                           const struct xattr *xattr_array,
80                                           struct xattr *evm)
81 {
82         return -EOPNOTSUPP;
83 }
84
85 #endif /* CONFIG_EVM_H */
86 #endif /* LINUX_EVM_H */