syscall: don't use AF_LINK on hurd
Patch from Svante Signell.
Fixes https://gcc.gnu.org/PR98153
Change-Id: I80a87d882ef7fb786ef121e0a3d84c8541eabb13
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/275939
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
diff --git a/libgo/go/syscall/socket_bsd.go b/libgo/go/syscall/socket_bsd.go
index b230a32..983d554 100644
--- a/libgo/go/syscall/socket_bsd.go
+++ b/libgo/go/syscall/socket_bsd.go
@@ -4,7 +4,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// +build darwin dragonfly freebsd hurd openbsd netbsd
+// +build darwin dragonfly freebsd openbsd netbsd
package syscall
diff --git a/libgo/go/syscall/socket_hurd.go b/libgo/go/syscall/socket_hurd.go
new file mode 100644
index 0000000..fcb239e
--- /dev/null
+++ b/libgo/go/syscall/socket_hurd.go
@@ -0,0 +1,101 @@
+// socket_hurd.go -- Socket handling specific to GNU/Hurd based systems.
+// This file is derived from socket_bsd.go without SockaddrDatalink since
+// AF_LINK is not yet supported on GNU/Hurd.
+
+// Copyright 2010 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.
+
+// +build hurd
+
+package syscall
+
+import "unsafe"
+
+const SizeofSockaddrInet4 = 16
+const SizeofSockaddrInet6 = 28
+const SizeofSockaddrUnix = 110
+
+type RawSockaddrInet4 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]uint8
+}
+
+func (sa *RawSockaddrInet4) setLen() Socklen_t {
+ sa.Len = SizeofSockaddrInet4
+ return SizeofSockaddrInet4
+}
+
+type RawSockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+func (sa *RawSockaddrInet6) setLen() Socklen_t {
+ sa.Len = SizeofSockaddrInet6
+ return SizeofSockaddrInet6
+}
+
+type RawSockaddrUnix struct {
+ Len uint8
+ Family uint8
+ Path [108]int8
+}
+
+func (sa *RawSockaddrUnix) setLen(n int) {
+ sa.Len = uint8(3 + n) // 2 for Family, Len; 1 for NUL.
+}
+
+func (sa *RawSockaddrUnix) getLen() (int, error) {
+ if sa.Len < 2 || sa.Len > SizeofSockaddrUnix {
+ return 0, EINVAL
+ }
+
+ // Some BSDs include the trailing NUL in the length, whereas
+ // others do not. Work around this by subtracting the leading
+ // family and len. The path is then scanned to see if a NUL
+ // terminator still exists within the length.
+ n := int(sa.Len) - 2 // subtract leading Family, Len
+ for i := 0; i < n; i++ {
+ if sa.Path[i] == 0 {
+ // found early NUL; assume Len included the NUL
+ // or was overestimating.
+ n = i
+ break
+ }
+ }
+ return n, nil
+}
+
+func (sa *RawSockaddrUnix) adjustAbstract(sl Socklen_t) Socklen_t {
+ return sl
+}
+
+type RawSockaddr struct {
+ Len uint8
+ Family uint8
+ Data [14]int8
+}
+
+// BindToDevice binds the socket associated with fd to device.
+func BindToDevice(fd int, device string) (err error) {
+ return ENOSYS
+}
+
+func anyToSockaddrOS(rsa *RawSockaddrAny) (Sockaddr, error) {
+ return nil, EAFNOSUPPORT
+}
+
+func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) {
+ var value IPv6MTUInfo
+ vallen := Socklen_t(SizeofIPv6MTUInfo)
+ err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+ return &value, err
+}
