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evm.h
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1 /*
2  * evm.h
3  *
4  * Copyright (c) 2009 IBM Corporation
5  * Author: Mimi Zohar <[email protected]>
6  */
7 
8 #ifndef _LINUX_EVM_H
9 #define _LINUX_EVM_H
10 
11 #include <linux/integrity.h>
12 #include <linux/xattr.h>
13 
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 int evm_inode_setattr(struct dentry *dentry, struct iattr *attr);
23 extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);
24 extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
25  const void *value, size_t size);
26 extern void evm_inode_post_setxattr(struct dentry *dentry,
27  const char *xattr_name,
28  const void *xattr_value,
29  size_t xattr_value_len);
30 extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name);
31 extern void evm_inode_post_removexattr(struct dentry *dentry,
32  const char *xattr_name);
33 extern int evm_inode_init_security(struct inode *inode,
34  const struct xattr *xattr_array,
35  struct xattr *evm);
36 #ifdef CONFIG_FS_POSIX_ACL
37 extern int posix_xattr_acl(const char *xattrname);
38 #else
39 static inline int posix_xattr_acl(const char *xattrname)
40 {
41  return 0;
42 }
43 #endif
44 #else
45 #ifdef CONFIG_INTEGRITY
46 static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
47  const char *xattr_name,
48  void *xattr_value,
49  size_t xattr_value_len,
50  struct integrity_iint_cache *iint)
51 {
52  return INTEGRITY_UNKNOWN;
53 }
54 #endif
55 
56 static inline int evm_inode_setattr(struct dentry *dentry, struct iattr *attr)
57 {
58  return 0;
59 }
60 
61 static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
62 {
63  return;
64 }
65 
66 static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
67  const void *value, size_t size)
68 {
69  return 0;
70 }
71 
72 static inline void evm_inode_post_setxattr(struct dentry *dentry,
73  const char *xattr_name,
74  const void *xattr_value,
75  size_t xattr_value_len)
76 {
77  return;
78 }
79 
80 static inline int evm_inode_removexattr(struct dentry *dentry,
81  const char *xattr_name)
82 {
83  return 0;
84 }
85 
86 static inline void evm_inode_post_removexattr(struct dentry *dentry,
87  const char *xattr_name)
88 {
89  return;
90 }
91 
92 static inline int evm_inode_init_security(struct inode *inode,
93  const struct xattr *xattr_array,
94  struct xattr *evm)
95 {
96  return 0;
97 }
98 
99 #endif /* CONFIG_EVM_H */
100 #endif /* LINUX_EVM_H */