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cmd/tailscaled, util/winutil: log Windows service diagnostics when the wintun device fails to install

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I added new functions to winutil to obtain the state of a service and all
its depedencies, serialize them to JSON, and write them to a Logf.

When tstun.New returns a wrapped ERROR_DEVICE_NOT_AVAILABLE, we know that wintun
installation failed. We then log the service graph rooted at "NetSetupSvc".
We are interested in that specific service because network devices will not
install if that service is not running.

Updates https://github.com/tailscale/tailscale/issues/5531

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
This commit is contained in:
Aaron Klotz
2022-09-19 15:49:58 -06:00
parent 18159431ab
commit 44f13d32d7
7 changed files with 376 additions and 1 deletions
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2
cmd/derper/depaware.txt
View File

@@ -107,6 +107,8 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
LD golang.org/x/sys/unix from github.com/jsimonetti/rtnetlink/internal/unix+
W golang.org/x/sys/windows from golang.org/x/sys/windows/registry+
W golang.org/x/sys/windows/registry from golang.zx2c4.com/wireguard/windows/tunnel/winipcfg+
W golang.org/x/sys/windows/svc from golang.org/x/sys/windows/svc/mgr+
W golang.org/x/sys/windows/svc/mgr from tailscale.com/util/winutil
golang.org/x/text/secure/bidirule from golang.org/x/net/idna
golang.org/x/text/transform from golang.org/x/text/secure/bidirule+
golang.org/x/text/unicode/bidi from golang.org/x/net/idna+

2
cmd/tailscale/depaware.txt
View File

@@ -135,6 +135,8 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
LD golang.org/x/sys/unix from tailscale.com/net/netns+
W golang.org/x/sys/windows from golang.org/x/sys/windows/registry+
W golang.org/x/sys/windows/registry from golang.zx2c4.com/wireguard/windows/tunnel/winipcfg+
W golang.org/x/sys/windows/svc from golang.org/x/sys/windows/svc/mgr+
W golang.org/x/sys/windows/svc/mgr from tailscale.com/util/winutil
golang.org/x/text/secure/bidirule from golang.org/x/net/idna
golang.org/x/text/transform from golang.org/x/text/secure/bidirule+
golang.org/x/text/unicode/bidi from golang.org/x/net/idna+

2
cmd/tailscaled/depaware.txt
View File

@@ -342,7 +342,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
W golang.org/x/sys/windows/registry from golang.org/x/sys/windows/svc/eventlog+
W golang.org/x/sys/windows/svc from golang.org/x/sys/windows/svc/mgr+
W golang.org/x/sys/windows/svc/eventlog from tailscale.com/cmd/tailscaled
W golang.org/x/sys/windows/svc/mgr from tailscale.com/cmd/tailscaled
W golang.org/x/sys/windows/svc/mgr from tailscale.com/cmd/tailscaled+
golang.org/x/term from tailscale.com/logpolicy
golang.org/x/text/secure/bidirule from golang.org/x/net/idna
golang.org/x/text/transform from golang.org/x/text/secure/bidirule+

7
cmd/tailscaled/tailscaled_windows.go
View File

@@ -23,6 +23,7 @@ package main // import "tailscale.com/cmd/tailscaled"
import (
"context"
"encoding/json"
"errors"
"fmt"
"log"
"net/netip"
@@ -270,6 +271,12 @@ func startIPNServer(ctx context.Context, logid string) error {
getEngineRaw := func() (wgengine.Engine, *netstack.Impl, error) {
dev, devName, err := tstun.New(logf, "Tailscale")
if err != nil {
if errors.Is(err, windows.ERROR_DEVICE_NOT_AVAILABLE) {
// Wintun is not installing correctly. Dump the state of NetSetupSvc
// (which is a user-mode service that must be active for network devices
// to install) and its dependencies to the log.
winutil.LogSvcState(logf, "NetSetupSvc")
}
return nil, nil, fmt.Errorf("TUN: %w", err)
}
r, err := router.New(logf, dev, nil)