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cmd/tailscaled, util/winutil: log our registry keys during tailscaled startup

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In order to improve our ability to understand the state of policies and
registry settings when troubleshooting, we enumerate all values in all subkeys.
x/sys/windows does not already offer this, so we need to call RegEnumValue
directly.

For now we're just logging this during startup, however in a future PR I plan to
also trigger this code during a bugreport. I also want to log more than just
registry.

Fixes #8141

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
This commit is contained in:
Aaron Klotz
2023-05-09 15:51:20 -06:00
parent 88ee857bc8
commit 2aa8299c37
5 changed files with 304 additions and 0 deletions
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2
util/winutil/mksyscall.go
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@@ -4,5 +4,7 @@
package winutil
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go
//go:generate go run golang.org/x/tools/cmd/goimports -w zsyscall_windows.go
//sys queryServiceConfig2(hService windows.Handle, infoLevel uint32, buf *byte, bufLen uint32, bytesNeeded *uint32) (err error) [failretval==0] = advapi32.QueryServiceConfig2W
//sys regEnumValue(key registry.Key, index uint32, valueName *uint16, valueNameLen *uint32, reserved *uint32, valueType *uint32, pData *byte, cbData *uint32) (ret error) [failretval!=0] = advapi32.RegEnumValueW