diff --git a/libc/kernel/uapi/linux/ndctl.h b/libc/kernel/uapi/linux/ndctl.h
new file mode 100644
index 0000000..6626e24
--- /dev/null
+++ b/libc/kernel/uapi/linux/ndctl.h
@@ -0,0 +1,168 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 __NDCTL_H__
+#define __NDCTL_H__
+#include <linux/types.h>
+struct nd_cmd_smart {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+  __u8 data[128];
+} __packed;
+struct nd_cmd_smart_threshold {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+  __u8 data[8];
+} __packed;
+struct nd_cmd_dimm_flags {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+  __u32 flags;
+} __packed;
+struct nd_cmd_get_config_size {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+  __u32 config_size;
+  __u32 max_xfer;
+} __packed;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct nd_cmd_get_config_data_hdr {
+  __u32 in_offset;
+  __u32 in_length;
+  __u32 status;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u8 out_buf[0];
+} __packed;
+struct nd_cmd_set_config_hdr {
+  __u32 in_offset;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 in_length;
+  __u8 in_buf[0];
+} __packed;
+struct nd_cmd_vendor_hdr {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 opcode;
+  __u32 in_length;
+  __u8 in_buf[0];
+} __packed;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct nd_cmd_vendor_tail {
+  __u32 status;
+  __u32 out_length;
+  __u8 out_buf[0];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+} __packed;
+struct nd_cmd_ars_cap {
+  __u64 address;
+  __u64 length;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+  __u32 max_ars_out;
+} __packed;
+struct nd_cmd_ars_start {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u64 address;
+  __u64 length;
+  __u16 type;
+  __u8 reserved[6];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 status;
+} __packed;
+struct nd_cmd_ars_status {
+  __u32 status;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 out_length;
+  __u64 address;
+  __u64 length;
+  __u16 type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 num_records;
+  struct nd_ars_record {
+    __u32 handle;
+    __u32 flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+    __u64 err_address;
+    __u64 length;
+  } __packed records[0];
+} __packed;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum {
+  ND_CMD_IMPLEMENTED = 0,
+  ND_CMD_ARS_CAP = 1,
+  ND_CMD_ARS_START = 2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ND_CMD_ARS_STATUS = 3,
+  ND_CMD_SMART = 1,
+  ND_CMD_SMART_THRESHOLD = 2,
+  ND_CMD_DIMM_FLAGS = 3,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ND_CMD_GET_CONFIG_SIZE = 4,
+  ND_CMD_GET_CONFIG_DATA = 5,
+  ND_CMD_SET_CONFIG_DATA = 6,
+  ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ND_CMD_VENDOR_EFFECT_LOG = 8,
+  ND_CMD_VENDOR = 9,
+};
+enum {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ND_ARS_VOLATILE = 1,
+  ND_ARS_PERSISTENT = 2,
+};
+#define ND_IOCTL 'N'
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART, struct nd_cmd_smart)
+#define ND_IOCTL_SMART_THRESHOLD _IOWR(ND_IOCTL, ND_CMD_SMART_THRESHOLD, struct nd_cmd_smart_threshold)
+#define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS, struct nd_cmd_dimm_flags)
+#define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE, struct nd_cmd_get_config_size)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA, struct nd_cmd_get_config_data_hdr)
+#define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA, struct nd_cmd_set_config_hdr)
+#define ND_IOCTL_VENDOR _IOWR(ND_IOCTL, ND_CMD_VENDOR, struct nd_cmd_vendor_hdr)
+#define ND_IOCTL_ARS_CAP _IOWR(ND_IOCTL, ND_CMD_ARS_CAP, struct nd_cmd_ars_cap)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ND_IOCTL_ARS_START _IOWR(ND_IOCTL, ND_CMD_ARS_START, struct nd_cmd_ars_start)
+#define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS, struct nd_cmd_ars_status)
+#define ND_DEVICE_DIMM 1
+#define ND_DEVICE_REGION_PMEM 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ND_DEVICE_REGION_BLK 3
+#define ND_DEVICE_NAMESPACE_IO 4
+#define ND_DEVICE_NAMESPACE_PMEM 5
+#define ND_DEVICE_NAMESPACE_BLK 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum nd_driver_flags {
+  ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM,
+  ND_DRIVER_REGION_PMEM = 1 << ND_DEVICE_REGION_PMEM,
+  ND_DRIVER_REGION_BLK = 1 << ND_DEVICE_REGION_BLK,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ND_DRIVER_NAMESPACE_IO = 1 << ND_DEVICE_NAMESPACE_IO,
+  ND_DRIVER_NAMESPACE_PMEM = 1 << ND_DEVICE_NAMESPACE_PMEM,
+  ND_DRIVER_NAMESPACE_BLK = 1 << ND_DEVICE_NAMESPACE_BLK,
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum {
+  ND_MIN_NAMESPACE_SIZE = 0x00400000,
+};
+enum ars_masks {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  ARS_STATUS_MASK = 0x0000FFFF,
+  ARS_EXT_STATUS_SHIFT = 16,
+};
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */