From 9ef648c8dfcc979544f2552d26bcb6bad5c98265 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Sat, 1 Mar 2025 15:21:17 -0800
Subject: [PATCH] cmd/tailscaled: add default state dir on plan9

Updates #5794

Change-Id: I4729881a36276a5c39233b4aef9550230ccc9316
---
 cmd/tailscaled/tailscaled.go | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/cmd/tailscaled/tailscaled.go b/cmd/tailscaled/tailscaled.go
index 237cdfb55..897f72cb7 100644
--- a/cmd/tailscaled/tailscaled.go
+++ b/cmd/tailscaled/tailscaled.go
@@ -230,7 +230,18 @@ func main() {
 	// Only apply a default statepath when neither have been provided, so that a
 	// user may specify only --statedir if they wish.
 	if args.statepath == "" && args.statedir == "" {
-		args.statepath = paths.DefaultTailscaledStateFile()
+		if runtime.GOOS == "plan9" {
+			home, err := os.UserHomeDir()
+			if err != nil {
+				log.Fatalf("failed to get home directory: %v", err)
+			}
+			args.statedir = filepath.Join(home, "tailscale-state")
+			if err := os.MkdirAll(args.statedir, 0700); err != nil {
+				log.Fatalf("failed to create state directory: %v", err)
+			}
+		} else {
+			args.statepath = paths.DefaultTailscaledStateFile()
+		}
 	}
 
 	if args.disableLogs {