Merge pull request #763 from hack3ric/riscv64-support

Add riscv64 support

core/open_out_log_linux_arm64.go → core/open_out_log_linux_dup3.go

@@ -1,5 +1,6 @@
-//go:build linux && arm64
+//go:build linux && (arm64 || riscv64)
 // +build linux,arm64
+// +build linux,riscv64
 
 // Copyright 2017 LinkedIn Corp. Licensed under the Apache License, Version
 // 2.0 (the "License"); you may not use this file except in compliance with
@@ -16,7 +17,7 @@ import (
 	"syscall"
 )
 
-// linux_arm64 doesn't have syscall.Dup2, so use
+// linux_arm64 and linux_riscv64 doesn't have syscall.Dup2, so use
 // the nearly identical syscall.Dup3 instead
 func internalDup2(oldfd uintptr, newfd uintptr) error {
 	return syscall.Dup3(int(oldfd), int(newfd), 0)