// SPDX-License-Identifier: GPL-2.0
  /*
   * linux/fs/ext2/xattr_security.c
   * Handler for storing security labels as extended attributes.
   */
  
  #include "ext2.h"
  #include <linux/security.h>
  #include "xattr.h"
  
  static int
  ext2_xattr_security_get(const struct xattr_handler *handler,
  			struct dentry *unused, struct inode *inode,
  			const char *name, void *buffer, size_t size)
  {
  	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
  			      buffer, size);
  }
  
  static int
  ext2_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 ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
  			      value, size, flags);
  }
  
  static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
  			   void *fs_info)
  {
  	const struct xattr *xattr;
  	int err = 0;
  
  	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
  		err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
  				     xattr->name, xattr->value,
  				     xattr->value_len, 0);
  		if (err < 0)
  			break;
  	}
  	return err;
  }
  
  int
  ext2_init_security(struct inode *inode, struct inode *dir,
  		   const struct qstr *qstr)
  {
  	return security_inode_init_security(inode, dir, qstr,
  					    &ext2_initxattrs, NULL);
  }
  
  const struct xattr_handler ext2_xattr_security_handler = {
  	.prefix	= XATTR_SECURITY_PREFIX,
  	.get	= ext2_xattr_security_get,
  	.set	= ext2_xattr_security_set,
  };