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
  13 #ifdef CONFIG_EVM
  14 extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
  15                                              const char *xattr_name,
  16                                              void *xattr_value,
  17                                              size_t xattr_value_len);
  18 extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
  19                               const void *value, size_t size);
  20 extern void evm_inode_post_setxattr(struct dentry *dentry,
  21                                     const char *xattr_name,
  22                                     const void *xattr_value,
  23                                     size_t xattr_value_len);
  24 extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name);
  25 extern void evm_inode_post_removexattr(struct dentry *dentry,
  26                                        const char *xattr_name);
  27 #else
  28 #ifdef CONFIG_INTEGRITY
  29 static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
  30                                                     const char *xattr_name,
  31                                                     void *xattr_value,
  32                                                     size_t xattr_value_len)
  33 {
  34         return INTEGRITY_UNKNOWN;
  35 }
  36 #endif
  37
  38 static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
  39                                      const void *value, size_t size)
  40 {
  41         return 0;
  42 }
  43
  44 static inline void evm_inode_post_setxattr(struct dentry *dentry,
  45                                            const char *xattr_name,
  46                                            const void *xattr_value,
  47                                            size_t xattr_value_len)
  48 {
  49         return;
  50 }
  51
  52 static inline int evm_inode_removexattr(struct dentry *dentry,
  53                                         const char *xattr_name)
  54 {
  55         return 0;
  56 }
  57
  58 static inline void evm_inode_post_removexattr(struct dentry *dentry,
  59                                               const char *xattr_name)
  60 {
  61         return;
  62 }
  63
  64 #endif /* CONFIG_EVM_H */
  65 #endif /* LINUX_EVM_H */