From 43b2c5bac95399b4c38b199e8d5d90e910f4d568 Mon Sep 17 00:00:00 2001
From: Josef Schlehofer <pepe.schlehofer@gmail.com>
Date: Wed, 1 Jul 2026 12:37:33 +0200
Subject: [PATCH] ci: mock sysctl in test container to avoid read-only
 filesystem errors

When running container-based package tests (e.g. for transmission-daemon),
packages or build scripts that try to write network settings or kernel parameters
via sysctl or direct writes to /proc/sys fail because /proc/sys is mounted as read-only.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
---
 .github/scripts/test_entrypoint.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/.github/scripts/test_entrypoint.sh b/.github/scripts/test_entrypoint.sh
index 1b8f8ad..d6f247a 100755
--- a/.github/scripts/test_entrypoint.sh
+++ b/.github/scripts/test_entrypoint.sh
@@ -9,6 +9,32 @@ set -o nounset # undefined variables causes script to fail
 mkdir -p /var/lock/
 mkdir -p /var/log/
 
+# Mock sysctl and /etc/init.d/sysctl to avoid read-only filesystem errors in container
+if [ -f /etc/init.d/sysctl ]; then
+	cat << 'EOF' > /etc/init.d/sysctl
+#!/bin/sh /etc/rc.common
+START=11
+start() { :; }
+stop() { :; }
+EOF
+	chmod +x /etc/init.d/sysctl
+fi
+
+SYSCTL_PATH=$(command -v sysctl || echo "/sbin/sysctl")
+if [ -f "$SYSCTL_PATH" ] && [ ! -f "${SYSCTL_PATH}.real" ]; then
+	mv "$SYSCTL_PATH" "${SYSCTL_PATH}.real"
+	cat << EOF > "$SYSCTL_PATH"
+#!/bin/sh
+# If writing or applying, ignore read-only filesystem errors or do nothing
+if echo "\$*" | grep -qE '(-w|=|-p)'; then
+	"${SYSCTL_PATH}.real" "\$@" 2>/dev/null || true
+else
+	"${SYSCTL_PATH}.real" "\$@"
+fi
+EOF
+	chmod +x "$SYSCTL_PATH"
+fi
+
 CI_HELPERS="${CI_HELPERS:-/scripts/ci_helpers.sh}"
 TEST_PACKAGES="binutils coreutils-timeout file"