diff --git a/libc/kernel/uapi/linux/dlmconstants.h b/libc/kernel/uapi/linux/dlmconstants.h
new file mode 100644
index 0000000..e24d42c
--- /dev/null
+++ b/libc/kernel/uapi/linux/dlmconstants.h
@@ -0,0 +1,59 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __DLMCONSTANTS_DOT_H__
+#define __DLMCONSTANTS_DOT_H__
+#define DLM_LOCKSPACE_LEN 64
+#define DLM_RESNAME_MAXLEN 64
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LOCK_IV (-1)
+#define DLM_LOCK_NL 0
+#define DLM_LOCK_CR 1
+#define DLM_LOCK_CW 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LOCK_PR 3
+#define DLM_LOCK_PW 4
+#define DLM_LOCK_EX 5
+#define DLM_LKF_NOQUEUE 0x00000001
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LKF_CANCEL 0x00000002
+#define DLM_LKF_CONVERT 0x00000004
+#define DLM_LKF_VALBLK 0x00000008
+#define DLM_LKF_QUECVT 0x00000010
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LKF_IVVALBLK 0x00000020
+#define DLM_LKF_CONVDEADLK 0x00000040
+#define DLM_LKF_PERSISTENT 0x00000080
+#define DLM_LKF_NODLCKWT 0x00000100
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LKF_NODLCKBLK 0x00000200
+#define DLM_LKF_EXPEDITE 0x00000400
+#define DLM_LKF_NOQUEUEBAST 0x00000800
+#define DLM_LKF_HEADQUE 0x00001000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LKF_NOORDER 0x00002000
+#define DLM_LKF_ORPHAN 0x00004000
+#define DLM_LKF_ALTPR 0x00008000
+#define DLM_LKF_ALTCW 0x00010000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define DLM_LKF_FORCEUNLOCK 0x00020000
+#define DLM_LKF_TIMEOUT 0x00040000
+#define DLM_ECANCEL 0x10001
+#define DLM_EUNLOCK 0x10002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif