#!/bin/sh /etc/rc.common
# Simple helper to update tailscale before its own init runs
# Provides: update_tailscale
# Required-Start: $network
# Required-Stop:
# Default-Start:  S  # earliest boot stage
# Default-Stop:
# Short-Description: Pre-flight Tailscale update

START=50 # Run before Tailscale (typically START~80)

start() {
    LOGFILE=/var/log/update_tailscale.log
    MAX_RETRIES=10
    RETRY_COUNT=0

    # shellcheck disable=SC2016
    sh -c '
while [ "$RETRY_COUNT" -lt "$MAX_RETRIES" ]; do
  if fn; then
    echo "[update_tailscale] Success at $(date)" >>"$LOGFILE"
    exit 0
  fi
  RETRY_COUNT=$((RETRY_COUNT + 1))
  echo "[update_tailscale] Retry $RETRY_COUNT at $(date)" >>"$LOGFILE"
  sleep 5
done
echo "[update_tailscale] Too many retries. Exiting at $(date)" >>"$LOGFILE"
exit 1
' >>"$LOGFILE" 2>&1 &
}