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 #ifdef CONFIG_EVM
  15 extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
  16                                              const char *xattr_name,
  17                                              void *xattr_value,
  18                                              size_t xattr_value_len);
  19 extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);
  20 extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
  21                               const void *value, size_t size);
  22 extern void evm_inode_post_setxattr(struct dentry *dentry,
  23                                     const char *xattr_name,
  24                                     const void *xattr_value,
  25                                     size_t xattr_value_len);
  26 extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name);
  27 extern void evm_inode_post_removexattr(struct dentry *dentry,
  28                                        const char *xattr_name);
  29 extern int evm_inode_init_security(struct inode *inode,
  30                                    const struct xattr *xattr_array,
  31                                    struct xattr *evm);
  32 #else
  33 #ifdef CONFIG_INTEGRITY
  34 static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
  35                                                     const char *xattr_name,
  36                                                     void *xattr_value,
  37                                                     size_t xattr_value_len)
  38 {
  39         return INTEGRITY_UNKNOWN;
  40 }
  41 #endif
  42
  43 static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
  44 {
  45         return;
  46 }
  47
  48 static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
  49                                      const void *value, size_t size)
  50 {
  51         return 0;
  52 }
  53
  54 static inline void evm_inode_post_setxattr(struct dentry *dentry,
  55                                            const char *xattr_name,
  56                                            const void *xattr_value,
  57                                            size_t xattr_value_len)
  58 {
  59         return;
  60 }
  61
  62 static inline int evm_inode_removexattr(struct dentry *dentry,
  63                                         const char *xattr_name)
  64 {
  65         return 0;
  66 }
  67
  68 static inline void evm_inode_post_removexattr(struct dentry *dentry,
  69                                               const char *xattr_name)
  70 {
  71         return;
  72 }
  73
  74 static inline int evm_inode_init_security(struct inode *inode,
  75                                           const struct xattr *xattr_array,
  76                                           struct xattr *evm)
  77 {
  78         return -EOPNOTSUPP;
  79 }
  80
  81 #endif /* CONFIG_EVM_H */
  82 #endif /* LINUX_EVM_H */