os, net, crypto/x509: add hurd support

    
    Patch by Svante Signell.
    
    Reviewed-on: https://go-review.googlesource.com/c/161519

From-SVN: r268604

3 files changed, 60 insertions, 0 deletions

diff --git a/libgo/go/net/cgo_hurd.go b/libgo/go/net/cgo_hurd.go
new file mode 100644
index 0000000..98e4cfa
--- /dev/null
+++ b/libgo/go/net/cgo_hurd.go
@@ -0,0 +1,17 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// This file is derived from cgo_bsd.go
+
+// +build cgo,!netgo
+// +build hurd
+
+package net
+
+/*
+#include <netdb.h>
+*/
+
+import "syscall"
+
+const cgoAddrInfoFlags = syscall.AI_CANONNAME | syscall.AI_V4MAPPED | syscall.AI_ALL
diff --git a/libgo/go/net/sendfile_linux.go b/libgo/go/net/sendfile_glibc.go
index 297e625..a71cfc9 100644
--- a/libgo/go/net/sendfile_linux.go
+++ b/libgo/go/net/sendfile_glibc.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build hurd linux
+
 package net
 
 import (
diff --git a/libgo/go/net/sockopt_hurd.go b/libgo/go/net/sockopt_hurd.go
new file mode 100644
index 0000000..c6de7a9
--- /dev/null
+++ b/libgo/go/net/sockopt_hurd.go
@@ -0,0 +1,41 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package net
+
+import (
+	"os"
+	"syscall"
+)
+
+func setDefaultSockopts(s, family, sotype int, ipv6only bool) error {
+	if family == syscall.AF_INET6 && sotype != syscall.SOCK_RAW {
+		// Allow both IP versions even if the OS default
+		// is otherwise. Note that some operating systems
+		// never admit this option.
+		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
+	}
+	// Allow broadcast.
+	if err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1); err != nil {
+		return os.NewSyscallError("setsockopt", err)
+	}
+	return nil
+}
+
+func setDefaultListenerSockopts(s int) error {
+	// Allow reuse of recently-used addresses.
+	if err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1); err != nil {
+		return os.NewSyscallError("setsockopt", err)
+	}
+	return nil
+}
+
+func setDefaultMulticastSockopts(s int) error {
+	// Allow multicast UDP and raw IP datagram sockets to listen
+	// concurrently across multiple listeners.
+	if err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1); err != nil {
+		return os.NewSyscallError("setsockopt", err)
+	}
+	return nil
+}