/* SPDX-License-Identifier: GPL-2.0 */

  /*
   * evm.h
   *
   * Copyright (c) 2009 IBM Corporation
   * Author: Mimi Zohar <zohar@us.ibm.com>
   */
  
  #ifndef _LINUX_EVM_H
  #define _LINUX_EVM_H
  
  #include <linux/integrity.h>

  #include <linux/xattr.h>

  struct integrity_iint_cache;

  #ifdef CONFIG_EVM

  extern int evm_set_key(void *key, size_t keylen);

  extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
  					     const char *xattr_name,
  					     void *xattr_value,

  					     size_t xattr_value_len,
  					     struct integrity_iint_cache *iint);

  extern int evm_inode_setattr(struct dentry *dentry, struct iattr *attr);

  extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);

  extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
  			      const void *value, size_t size);
  extern void evm_inode_post_setxattr(struct dentry *dentry,
  				    const char *xattr_name,
  				    const void *xattr_value,
  				    size_t xattr_value_len);
  extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name);

  extern void evm_inode_post_removexattr(struct dentry *dentry,
  				       const char *xattr_name);

  extern int evm_inode_init_security(struct inode *inode,
  				   const struct xattr *xattr_array,
  				   struct xattr *evm);

  #ifdef CONFIG_FS_POSIX_ACL
  extern int posix_xattr_acl(const char *xattrname);
  #else
  static inline int posix_xattr_acl(const char *xattrname)
  {
  	return 0;
  }
  #endif

  #else

  
  static inline int evm_set_key(void *key, size_t keylen)
  {
  	return -EOPNOTSUPP;
  }

  #ifdef CONFIG_INTEGRITY
  static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
  						    const char *xattr_name,
  						    void *xattr_value,

  						    size_t xattr_value_len,
  					struct integrity_iint_cache *iint)

  {
  	return INTEGRITY_UNKNOWN;
  }
  #endif

  static inline int evm_inode_setattr(struct dentry *dentry, struct iattr *attr)

  {
  	return 0;
  }

  static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
  {
  	return;
  }

  static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
  				     const void *value, size_t size)
  {
  	return 0;
  }
  
  static inline void evm_inode_post_setxattr(struct dentry *dentry,
  					   const char *xattr_name,
  					   const void *xattr_value,
  					   size_t xattr_value_len)
  {
  	return;
  }
  
  static inline int evm_inode_removexattr(struct dentry *dentry,
  					const char *xattr_name)
  {
  	return 0;
  }

  
  static inline void evm_inode_post_removexattr(struct dentry *dentry,
  					      const char *xattr_name)
  {
  	return;
  }

  static inline int evm_inode_init_security(struct inode *inode,
  					  const struct xattr *xattr_array,
  					  struct xattr *evm)
  {

  	return 0;

  }

  #endif /* CONFIG_EVM */

  #endif /* LINUX_EVM_H */