From a0fde42296592b3bee4503370464b5789cf83440 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lucas=20K=C3=A4ldstr=C3=B6m?=
 <lucas.kaldstrom@hotmail.co.uk>
Date: Thu, 28 Jan 2016 07:48:12 +0200
Subject: [PATCH] Add linux_arm64 support

---
 internal/remote/output_interceptor_unix.go |  9 ++++++---
 internal/remote/syscall_dup_linux_arm64.go | 11 +++++++++++
 internal/remote/syscall_dup_unix.go        | 10 ++++++++++
 3 files changed, 27 insertions(+), 3 deletions(-)
 create mode 100644 internal/remote/syscall_dup_linux_arm64.go
 create mode 100644 internal/remote/syscall_dup_unix.go

diff --git a/internal/remote/output_interceptor_unix.go b/internal/remote/output_interceptor_unix.go
index 181b227e6..1235ad00c 100644
--- a/internal/remote/output_interceptor_unix.go
+++ b/internal/remote/output_interceptor_unix.go
@@ -6,7 +6,6 @@ import (
 	"errors"
 	"io/ioutil"
 	"os"
-	"syscall"
 )
 
 func NewOutputInterceptor() OutputInterceptor {
@@ -31,8 +30,12 @@ func (interceptor *outputInterceptor) StartInterceptingOutput() error {
 		return err
 	}
 
-	syscall.Dup2(int(interceptor.redirectFile.Fd()), 1)
-	syscall.Dup2(int(interceptor.redirectFile.Fd()), 2)
+	// Call a function in ./syscall_dup_*.go
+	// If building for everything other than linux_arm64,
+	// use a "normal" syscall.Dup2(oldfd, newfd) call. If building for linux_arm64 (which doesn't have syscall.Dup2)
+	// call syscall.Dup3(oldfd, newfd, 0). They are nearly identical, see: http://linux.die.net/man/2/dup3
+	syscallDup(int(interceptor.redirectFile.Fd()), 1)
+	syscallDup(int(interceptor.redirectFile.Fd()), 2)
 
 	return nil
 }
diff --git a/internal/remote/syscall_dup_linux_arm64.go b/internal/remote/syscall_dup_linux_arm64.go
new file mode 100644
index 000000000..5c59728ea
--- /dev/null
+++ b/internal/remote/syscall_dup_linux_arm64.go
@@ -0,0 +1,11 @@
+// +build linux,arm64
+
+package remote
+
+import "syscall"
+
+// linux_arm64 doesn't have syscall.Dup2 which ginkgo uses, so
+// use the nearly identical syscall.Dup3 instead
+func syscallDup(oldfd int, newfd int) (err error) {
+	return syscall.Dup3(oldfd, newfd, 0)
+}
\ No newline at end of file
diff --git a/internal/remote/syscall_dup_unix.go b/internal/remote/syscall_dup_unix.go
new file mode 100644
index 000000000..b0111d100
--- /dev/null
+++ b/internal/remote/syscall_dup_unix.go
@@ -0,0 +1,10 @@
+// +build !linux !arm64
+// +build !windows
+
+package remote
+
+import "syscall"
+
+func syscallDup(oldfd int, newfd int) (err error) {
+	return syscall.Dup2(oldfd, newfd)
+}
\ No newline at end of file