Index: lib/ext2fs/ext2_fs.h
--- lib/ext2fs/ext2_fs.h.orig
+++ lib/ext2fs/ext2_fs.h
@@ -375,6 +375,7 @@ struct ext4_new_group_input {
 #define _IOT_ext2_new_group_input _IOT (_IOTS(__u32), 5, _IOTS(__u16), 2, 0, 0)
 #endif
 
+#ifndef __OpenBSD__
 #define EXT2_IOC_GETFLAGS		_IOR('f', 1, long)
 #define EXT2_IOC_SETFLAGS		_IOW('f', 2, long)
 #define EXT2_IOC_GETVERSION		_IOR('v', 1, long)
@@ -385,6 +386,7 @@ struct ext4_new_group_input {
 #define EXT2_IOC_GROUP_ADD		_IOW('f', 8,struct ext2_new_group_input)
 #define EXT4_IOC_GROUP_ADD		_IOW('f', 8,struct ext4_new_group_input)
 #define EXT4_IOC_RESIZE_FS		_IOW('f', 16, __u64)
+#endif
 
 /*
  * Structure of an inode on the disk