From c0504885ea4a7f763a5c33b5dda8dfd9d42c5be6 Mon Sep 17 00:00:00 2001
From: Kamil Rytarowski <n54@gmx.com>
Date: Sun, 10 Sep 2017 00:16:36 +0200
Subject: [PATCH] unix: add NetBSD support in core.c

NetBSD supports:
 - O_CLOEXEC
 - accept4(2) like API with paccept(2)
   NetBSD 8.0 will get compat accept4(2)
 - SOCK_NONBLOCK
 - SOCK_CLOEXEC
 - dup3(2)

PR-URL: https://github.com/libuv/libuv/pull/1534
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
---
 src/unix/core.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/unix/core.c b/src/unix/core.c
index bee641cb4..ef82ee27b 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -58,13 +58,19 @@
 
 #if defined(__DragonFly__)      || \
     defined(__FreeBSD__)        || \
-    defined(__FreeBSD_kernel__)
+    defined(__FreeBSD_kernel__) || \
+    defined(__NetBSD__)
 # include <sys/sysctl.h>
 # include <sys/filio.h>
 # include <sys/wait.h>
 # define UV__O_CLOEXEC O_CLOEXEC
 # if defined(__FreeBSD__) && __FreeBSD__ >= 10
 #  define uv__accept4 accept4
+# endif
+# if defined(__NetBSD__)
+#  define uv__accept4(a, b, c, d) paccept((a), (b), (c), NULL, (d))
+# endif
+# if (defined(__FreeBSD__) && __FreeBSD__ >= 10) || defined(__NetBSD__)
 #  define UV__SOCK_NONBLOCK SOCK_NONBLOCK
 #  define UV__SOCK_CLOEXEC  SOCK_CLOEXEC
 # endif
@@ -462,7 +468,9 @@ int uv__accept(int sockfd) {
   assert(sockfd >= 0);
 
   while (1) {
-#if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD__ >= 10)
+#if defined(__linux__)                          || \
+    (defined(__FreeBSD__) && __FreeBSD__ >= 10) || \
+    defined(__NetBSD__)
     static int no_accept4;
 
     if (no_accept4)
@@ -988,7 +996,7 @@ int uv__open_cloexec(const char* path, int flags) {
 
 int uv__dup2_cloexec(int oldfd, int newfd) {
   int r;
-#if defined(__FreeBSD__) && __FreeBSD__ >= 10
+#if (defined(__FreeBSD__) && __FreeBSD__ >= 10) || defined(__NetBSD__)
   r = dup3(oldfd, newfd, O_CLOEXEC);
   if (r == -1)
     return -errno;