diff --git a/libc/kernel/uapi/linux/sed-opal.h b/libc/kernel/uapi/linux/sed-opal.h
new file mode 100644
index 0000000..a532073
--- /dev/null
+++ b/libc/kernel/uapi/linux/sed-opal.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 _UAPI_SED_OPAL_H
+#define _UAPI_SED_OPAL_H
+#include <linux/types.h>
+#define OPAL_KEY_MAX 256
+#define OPAL_MAX_LRS 9
+enum opal_mbr {
+  OPAL_MBR_ENABLE = 0x0,
+  OPAL_MBR_DISABLE = 0x01,
+};
+enum opal_user {
+  OPAL_ADMIN1 = 0x0,
+  OPAL_USER1 = 0x01,
+  OPAL_USER2 = 0x02,
+  OPAL_USER3 = 0x03,
+  OPAL_USER4 = 0x04,
+  OPAL_USER5 = 0x05,
+  OPAL_USER6 = 0x06,
+  OPAL_USER7 = 0x07,
+  OPAL_USER8 = 0x08,
+  OPAL_USER9 = 0x09,
+};
+enum opal_lock_state {
+  OPAL_RO = 0x01,
+  OPAL_RW = 0x02,
+  OPAL_LK = 0x04,
+};
+struct opal_key {
+  __u8 lr;
+  __u8 key_len;
+  __u8 __align[6];
+  __u8 key[OPAL_KEY_MAX];
+};
+struct opal_lr_act {
+  struct opal_key key;
+  __u32 sum;
+  __u8 num_lrs;
+  __u8 lr[OPAL_MAX_LRS];
+  __u8 align[2];
+};
+struct opal_session_info {
+  __u32 sum;
+  __u32 who;
+  struct opal_key opal_key;
+};
+struct opal_user_lr_setup {
+  __u64 range_start;
+  __u64 range_length;
+  __u32 RLE;
+  __u32 WLE;
+  struct opal_session_info session;
+};
+struct opal_lock_unlock {
+  struct opal_session_info session;
+  __u32 l_state;
+  __u8 __align[4];
+};
+struct opal_new_pw {
+  struct opal_session_info session;
+  struct opal_session_info new_user_pw;
+};
+struct opal_mbr_data {
+  struct opal_key key;
+  __u8 enable_disable;
+  __u8 __align[7];
+};
+#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
+#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
+#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
+#define IOC_OPAL_ACTIVATE_LSP _IOW('p', 223, struct opal_lr_act)
+#define IOC_OPAL_SET_PW _IOW('p', 224, struct opal_new_pw)
+#define IOC_OPAL_ACTIVATE_USR _IOW('p', 225, struct opal_session_info)
+#define IOC_OPAL_REVERT_TPR _IOW('p', 226, struct opal_key)
+#define IOC_OPAL_LR_SETUP _IOW('p', 227, struct opal_user_lr_setup)
+#define IOC_OPAL_ADD_USR_TO_LR _IOW('p', 228, struct opal_lock_unlock)
+#define IOC_OPAL_ENABLE_DISABLE_MBR _IOW('p', 229, struct opal_mbr_data)
+#define IOC_OPAL_ERASE_LR _IOW('p', 230, struct opal_session_info)
+#define IOC_OPAL_SECURE_ERASE_LR _IOW('p', 231, struct opal_session_info)
+#endif