diff --git a/libc/kernel/uapi/linux/pg.h b/libc/kernel/uapi/linux/pg.h
new file mode 100644
index 0000000..82686da
--- /dev/null
+++ b/libc/kernel/uapi/linux/pg.h
@@ -0,0 +1,40 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#define PG_MAGIC 'P'
+#define PG_RESET 'Z'
+#define PG_COMMAND 'C'
+#define PG_MAX_DATA 32768
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct pg_write_hdr {
+ char magic;
+ char func;
+ int dlen;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ int timeout;
+ char packet[12];
+};
+struct pg_read_hdr {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char magic;
+ char scsi;
+ int dlen;
+ int duration;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char pad[12];
+};