From 9555bcde0c6a6cd260623a1a1a5b49442543af2c Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Wed, 17 Feb 2021 14:07:18 +0100
Subject: [PATCH] unix: add Pipe2 on netbsd

Re-submit after CL 283593 broke the dragonfly builders.

Change-Id: Ifdeb7642be32f5d3d3862aacdff90a0da4886365
Reviewed-on: https://go-review.googlesource.com/c/sys/+/283599
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
---
 unix/pipe2_test.go            |  2 +-
 unix/syscall_netbsd.go        | 13 +++++++++++++
 unix/zsyscall_netbsd_386.go   | 10 ++++++++++
 unix/zsyscall_netbsd_amd64.go | 10 ++++++++++
 unix/zsyscall_netbsd_arm.go   | 10 ++++++++++
 unix/zsyscall_netbsd_arm64.go | 10 ++++++++++
 6 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/unix/pipe2_test.go b/unix/pipe2_test.go
index 3e1c01fe..3cd3bbde 100644
--- a/unix/pipe2_test.go
+++ b/unix/pipe2_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build dragonfly freebsd linux openbsd solaris
+// +build dragonfly freebsd linux netbsd openbsd solaris
 
 package unix_test
 
diff --git a/unix/syscall_netbsd.go b/unix/syscall_netbsd.go
index 9b150709..853d5f0f 100644
--- a/unix/syscall_netbsd.go
+++ b/unix/syscall_netbsd.go
@@ -120,6 +120,19 @@ func Pipe(p []int) (err error) {
 	return
 }
 
+//sysnb	pipe2(p *[2]_C_int, flags int) (err error)
+
+func Pipe2(p []int, flags int) error {
+	if len(p) != 2 {
+		return EINVAL
+	}
+	var pp [2]_C_int
+	err := pipe2(&pp, flags)
+	p[0] = int(pp[0])
+	p[1] = int(pp[1])
+	return err
+}
+
 //sys	Getdents(fd int, buf []byte) (n int, err error)
 
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
diff --git a/unix/zsyscall_netbsd_386.go b/unix/zsyscall_netbsd_386.go
index 3bbd9e39..1d6f71d9 100644
--- a/unix/zsyscall_netbsd_386.go
+++ b/unix/zsyscall_netbsd_386.go
@@ -362,6 +362,16 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+	_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
diff --git a/unix/zsyscall_netbsd_amd64.go b/unix/zsyscall_netbsd_amd64.go
index d8cf5012..82f50506 100644
--- a/unix/zsyscall_netbsd_amd64.go
+++ b/unix/zsyscall_netbsd_amd64.go
@@ -362,6 +362,16 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+	_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
diff --git a/unix/zsyscall_netbsd_arm.go b/unix/zsyscall_netbsd_arm.go
index 1153fe69..b4db55a0 100644
--- a/unix/zsyscall_netbsd_arm.go
+++ b/unix/zsyscall_netbsd_arm.go
@@ -362,6 +362,16 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+	_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
diff --git a/unix/zsyscall_netbsd_arm64.go b/unix/zsyscall_netbsd_arm64.go
index 24b4ebb4..e9f6d797 100644
--- a/unix/zsyscall_netbsd_arm64.go
+++ b/unix/zsyscall_netbsd_arm64.go
@@ -362,6 +362,16 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+	_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {