util/pidowner: remove unused packageawly/deadcode-pidowner

Added in 2020, this appears to be unused.

Updates #cleanup

1 files changed, 0 insertions, 36 deletions

diff --git a/util/pidowner/pidowner_linux.go b/util/pidowner/pidowner_linux.go
deleted file mode 100644
index f3f5cd97d..000000000
--- a/util/pidowner/pidowner_linux.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (c) Tailscale Inc & contributors
-// SPDX-License-Identifier: BSD-3-Clause
-
-package pidowner
-
-import (
-	"fmt"
-	"os"
-	"strings"
-
-	"tailscale.com/util/lineiter"
-)
-
-func ownerOfPID(pid int) (userID string, err error) {
-	file := fmt.Sprintf("/proc/%d/status", pid)
-	for lr := range lineiter.File(file) {
-		line, err := lr.Value()
-		if err != nil {
-			if os.IsNotExist(err) {
-				return "", ErrProcessNotFound
-			}
-			return "", err
-		}
-		if len(line) < 4 || string(line[:4]) != "Uid:" {
-			continue
-		}
-		f := strings.Fields(string(line))
-		if len(f) >= 2 {
-			userID = f[1] // real userid
-		}
-	}
-	if userID == "" {
-		return "", fmt.Errorf("missing Uid line in %s", file)
-	}
-	return userID, nil
-}