From d05d33f63655e8a1595b3dc33d37375afb73c02a Mon Sep 17 00:00:00 2001
From: Marian Buschsieweke <marian.buschsieweke@posteo.net>
Date: Thu, 30 May 2024 09:38:44 +0200
Subject: [PATCH] dist/tools/tapsetup: make compatible with doas

`doas` doesn't set `SUDO_USER`, but `DOAS_USER`. This populates
`SUDO_USER` with `DOAS_USER` if it is empty, so the script works with
both doas and sudo.
---
 dist/tools/tapsetup/tapsetup | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dist/tools/tapsetup/tapsetup b/dist/tools/tapsetup/tapsetup
index 6903544acb04..0ee6b7446b68 100755
--- a/dist/tools/tapsetup/tapsetup
+++ b/dist/tools/tapsetup/tapsetup
@@ -13,6 +13,10 @@ BRIDGE_ROUTES=""
 DEFAULT_PREFIX_LEN=128
 UPLINK=""
 
+# doas uses the DOAS_USER variable instead of SUDO_USER. For compatibility with
+# both, we populate SUDO_USER with DOAS_USER, if SUDO_USER is not existing.
+: "${SUDO_USER:="$DOAS_USER"}"
+
 usage() {
     echo "usage: ${PROGRAM} [arguments]" >&2
     echo "" >&2