diff --git a/libc/kernel/uapi/asm-generic/signal-defs.h b/libc/kernel/uapi/asm-generic/signal-defs.h
new file mode 100644
index 0000000..f47cbe7
--- /dev/null
+++ b/libc/kernel/uapi/asm-generic/signal-defs.h
@@ -0,0 +1,45 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 __ASM_GENERIC_SIGNAL_DEFS_H
+#define __ASM_GENERIC_SIGNAL_DEFS_H
+#include <linux/compiler.h>
+#ifndef SIG_BLOCK
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SIG_BLOCK 0
+#endif
+#ifndef SIG_UNBLOCK
+#define SIG_UNBLOCK 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef SIG_SETMASK
+#define SIG_SETMASK 2
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef __ASSEMBLY__
+typedef void __signalfn_t(int);
+typedef __signalfn_t __user *__sighandler_t;
+typedef void __restorefn_t(void);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+typedef __restorefn_t __user *__sigrestore_t;
+#define SIG_DFL ((__force __sighandler_t)0)
+#define SIG_IGN ((__force __sighandler_t)1)
+#define SIG_ERR ((__force __sighandler_t)-1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#endif