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 #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 */
 100 #endif /* LINUX_EVM_H */