/*

   * linux/fs/ext4/xattr_security.c

   * Handler for storing security labels as extended attributes.
   */

  #include <linux/string.h>
  #include <linux/fs.h>

  #include <linux/security.h>

  #include <linux/slab.h>

  #include "ext4_jbd2.h"
  #include "ext4.h"

  #include "xattr.h"

  static int

  ext4_xattr_security_get(const struct xattr_handler *handler,

  			struct dentry *unused, struct inode *inode,
  			const char *name, void *buffer, size_t size)

  {

  	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,

  			      name, buffer, size);

  }
  
  static int

  ext4_xattr_security_set(const struct xattr_handler *handler,

  			struct dentry *unused, struct inode *inode,
  			const char *name, const void *value,
  			size_t size, int flags)

  {

  	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY,

  			      name, value, size, flags);

  }

  static int
  ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
  		void *fs_info)

  {

  	const struct xattr *xattr;
  	handle_t *handle = fs_info;
  	int err = 0;

  	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
  		err = ext4_xattr_set_handle(handle, inode,
  					    EXT4_XATTR_INDEX_SECURITY,
  					    xattr->name, xattr->value,
  					    xattr->value_len, 0);
  		if (err < 0)
  			break;

  	}

  	return err;
  }

  int
  ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
  		   const struct qstr *qstr)
  {
  	return security_inode_init_security(inode, dir, qstr,
  					    &ext4_initxattrs, handle);
  }

  const struct xattr_handler ext4_xattr_security_handler = {

  	.prefix	= XATTR_SECURITY_PREFIX,

  	.get	= ext4_xattr_security_get,
  	.set	= ext4_xattr_security_set,

  };