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This work is in support of wireGuard/wireguard-go#39 Change-Id: Id205d28935b76b49ec6b29aba0a741659c5c01d7 Reviewed-on: https://go-review.googlesource.com/c/sys/+/345610 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Trust: Cherry Mui <cherryyz@google.com>
70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build illumos
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// +build illumos
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package unix_test
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import (
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"fmt"
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"os/exec"
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"strings"
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"testing"
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"golang.org/x/sys/unix"
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)
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func TestLifreqSetName(t *testing.T) {
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var l unix.Lifreq
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err := l.SetName("12345678901234356789012345678901234567890")
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if err == nil {
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t.Fatal(`Lifreq.SetName should reject names that are too long`)
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}
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err = l.SetName("tun0")
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if err != nil {
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t.Errorf(`Lifreq.SetName("tun0") failed: %v`, err)
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}
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}
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func TestLifreqGetMTU(t *testing.T) {
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// Find links and their MTU using CLI tooling
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// $ dladm show-link -p -o link,mtu
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// net0:1500
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out, err := exec.Command("dladm", "show-link", "-p", "-o", "link,mtu").Output()
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if err != nil {
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t.Fatalf("unable to use dladm to find data links: %v", err)
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}
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lines := strings.Split(string(out), "\n")
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tc := make(map[string]string)
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for _, line := range lines {
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v := strings.Split(line, ":")
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if len(v) == 2 {
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tc[v[0]] = v[1]
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}
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}
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ip_fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
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if err != nil {
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t.Fatalf("could not open udp socket: %v", err)
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}
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// SIOCGLIFMTU is negative which confuses the compiler if used inline:
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// Using "unix.IoctlLifreq(ip_fd, unix.SIOCGLIFMTU, &l)" results in
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// "constant -1065850502 overflows uint"
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reqnum := int(unix.SIOCGLIFMTU)
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var l unix.Lifreq
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for link, mtu := range tc {
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err = l.SetName(link)
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if err != nil {
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t.Fatalf("Lifreq.SetName(%q) failed: %v", link, err)
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}
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if err = unix.IoctlLifreq(ip_fd, uint(reqnum), &l); err != nil {
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t.Fatalf("unable to SIOCGLIFMTU: %v", err)
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}
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m := l.GetLifruUint()
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if fmt.Sprintf("%d", m) != mtu {
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t.Errorf("unable to read MTU correctly: expected %s, got %d", mtu, m)
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}
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}
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}
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