From 893fd97cdcfbb040c938acac42658c885da879ee Mon Sep 17 00:00:00 2001
From: Elliott Hughes <enh@google.com>
Date: Wed, 22 Feb 2017 23:22:51 -0800
Subject: [PATCH] Use <linux/eventpoll.h> to implement <sys/epoll.h>.

Bug: https://github.com/android-ndk/ndk/issues/302
Test: builds
Change-Id: Ia3074326a128c38f2488e342c028cc030801cfd9
---
 libc/include/sys/epoll.h           | 14 +++++++-------
 libc/kernel/tools/defaults.py      |  2 ++
 libc/kernel/uapi/linux/eventpoll.h |  2 +-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/libc/include/sys/epoll.h b/libc/include/sys/epoll.h
index 4ec8969a4e3..b7fdd4d8b64 100644
--- a/libc/include/sys/epoll.h
+++ b/libc/include/sys/epoll.h
@@ -31,11 +31,17 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
-#include <fcntl.h> /* For O_CLOEXEC. */
 #include <signal.h> /* For sigset_t. */
 
+#include <linux/eventpoll.h>
+/* TODO: https://lkml.org/lkml/2017/2/23/416 has a better fix. */
+#undef EPOLLWAKEUP
+#undef EPOLLONESHOT
+#undef EPOLLET
+
 __BEGIN_DECLS
 
+/* TODO: remove once https://lkml.org/lkml/2017/2/23/417 is upstream. */
 #define EPOLLIN          0x00000001
 #define EPOLLPRI         0x00000002
 #define EPOLLOUT         0x00000004
@@ -51,12 +57,6 @@ __BEGIN_DECLS
 #define EPOLLONESHOT     0x40000000
 #define EPOLLET          0x80000000
 
-#define EPOLL_CTL_ADD    1
-#define EPOLL_CTL_DEL    2
-#define EPOLL_CTL_MOD    3
-
-#define EPOLL_CLOEXEC O_CLOEXEC
-
 typedef union epoll_data {
   void* ptr;
   int fd;
diff --git a/libc/kernel/tools/defaults.py b/libc/kernel/tools/defaults.py
index d5577da50b2..620bb3137d8 100644
--- a/libc/kernel/tools/defaults.py
+++ b/libc/kernel/tools/defaults.py
@@ -75,6 +75,8 @@
     "SIGRTMAX": "__SIGRTMAX",
     # We want to support both BSD and Linux member names in struct udphdr.
     "udphdr": "__kernel_udphdr",
+    # The kernel's struct epoll_event just has __u64 for the data.
+    "epoll_event": "__kernel_uapi_epoll_event",
     }
 
 # this is the set of known static inline functions that we want to keep
diff --git a/libc/kernel/uapi/linux/eventpoll.h b/libc/kernel/uapi/linux/eventpoll.h
index ec51b9f4e5d..6c7e3553602 100644
--- a/libc/kernel/uapi/linux/eventpoll.h
+++ b/libc/kernel/uapi/linux/eventpoll.h
@@ -37,7 +37,7 @@
 #define EPOLL_PACKED
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-struct epoll_event {
+struct __kernel_uapi_epoll_event {
   __u32 events;
   __u64 data;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */