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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/tailscaled/depaware.txt
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@@ -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+