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 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 #else
  37 #ifdef CONFIG_INTEGRITY
  38 static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
  39                                                     const char *xattr_name,
  40                                                     void *xattr_value,
  41                                                     size_t xattr_value_len,
  42                                         struct integrity_iint_cache *iint)
  43 {
  44         return INTEGRITY_UNKNOWN;
  45 }
  46 #endif
  47
  48 static int evm_inode_setattr(struct dentry *dentry, struct iattr *attr)
  49 {
  50         return 0;
  51 }
  52
  53 static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
  54 {
  55         return;
  56 }
  57
  58 static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
  59                                      const void *value, size_t size)
  60 {
  61         return 0;
  62 }
  63
  64 static inline void evm_inode_post_setxattr(struct dentry *dentry,
  65                                            const char *xattr_name,
  66                                            const void *xattr_value,
  67                                            size_t xattr_value_len)
  68 {
  69         return;
  70 }
  71
  72 static inline int evm_inode_removexattr(struct dentry *dentry,
  73                                         const char *xattr_name)
  74 {
  75         return 0;
  76 }
  77
  78 static inline void evm_inode_post_removexattr(struct dentry *dentry,
  79                                               const char *xattr_name)
  80 {
  81         return;
  82 }
  83
  84 static inline int evm_inode_init_security(struct inode *inode,
  85                                           const struct xattr *xattr_array,
  86                                           struct xattr *evm)
  87 {
  88         return -EOPNOTSUPP;
  89 }
  90
  91 #endif /* CONFIG_EVM_H */
  92 #endif /* LINUX_EVM_H */