diff --git a/libc/kernel/common/linux/signalfd.h b/libc/kernel/common/linux/signalfd.h
new file mode 100644
index 0000000..a064192
--- /dev/null
+++ b/libc/kernel/common/linux/signalfd.h
@@ -0,0 +1,51 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 _LINUX_SIGNALFD_H
+#define _LINUX_SIGNALFD_H
+#include <linux/types.h>
+#include <linux/fcntl.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SFD_CLOEXEC O_CLOEXEC
+#define SFD_NONBLOCK O_NONBLOCK
+struct signalfd_siginfo {
+ __u32 ssi_signo;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __s32 ssi_errno;
+ __s32 ssi_code;
+ __u32 ssi_pid;
+ __u32 ssi_uid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __s32 ssi_fd;
+ __u32 ssi_tid;
+ __u32 ssi_band;
+ __u32 ssi_overrun;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u32 ssi_trapno;
+ __s32 ssi_status;
+ __s32 ssi_int;
+ __u64 ssi_ptr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 ssi_utime;
+ __u64 ssi_stime;
+ __u64 ssi_addr;
+ __u16 ssi_addr_lsb;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u8 __pad[46];
+};
+#endif