41ed765b9a
After a total power outage (system and networking gear), it's possible that the system boots up and blow through all the timeouts for DHCP before the network is operational. Unfortunately, I can't always solve that.
77 lines
1.7 KiB
Bash
Executable File
77 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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#set -e
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PREREQ=""
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prereqs()
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{
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echo "$PREREQ"
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}
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case $1 in
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prereqs)
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prereqs
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exit 0
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;;
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esac
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. /scripts/functions
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EXE="$(readlink -f /sbin/tailscaled)" && [ -f "$EXE" ] || exit 1
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PIDFILE="/run/tailscale.pid"
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TAILSCALE_SHUTDOWN_TIMEOUT=60
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TAILSCALE_LOGOUT=
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IFDOWN="*"
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if [ -e /etc/tailscale/initramfs/config ]; then
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. /etc/tailscale/initramfs/config
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fi
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wait_for_tailscaled()
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{
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# shellcheck disable=SC2039,SC3043
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# SC3043: In POSIX sh, 'local' is undefined.
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local pid exe timer="$TAILSCALE_SHUTDOWN_TIMEOUT"
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pid="$(cat "$PIDFILE" 2>/dev/null)" || return 1
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rm -f "$PIDFILE"
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while [ $timer -gt 0 ] && exe="$(readlink -f "/proc/$pid/exe" 2>/dev/null)"; do
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if [ "$exe" = "$EXE" ]; then
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echo "$pid"
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return 0
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fi
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sleep 1
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timer=$(( timer - 1 ))
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done
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return 1
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}
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if PID="$(wait_for_tailscaled)"; then
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if [ -n "$TAILSCALE_LOGOUT" ]; then
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log_begin_msg "Logging out of tailscale"
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/bin/tailscale --socket=/run/tailscale/tailscaled.sock logout 2>>/run/initramfs/tailscale.log || true
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log_end_msg
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fi
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log_begin_msg "Stopping tailscale"
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kill -TERM "$PID"
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wait "$PID" || true
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/sbin/tailscaled -cleanup 2>>/run/initramfs/tailscale.log
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log_end_msg
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fi
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if [ "$BOOT" != nfs ] && [ "$IFDOWN" != none ]; then
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for IFACE in /sys/class/net/$IFDOWN; do
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[ -e "$IFACE" ] || continue
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IFACE="${IFACE#/sys/class/net/}"
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log_begin_msg "Bringing down $IFACE"
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ip link set dev "$IFACE" down
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ip address flush dev "$IFACE"
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ip route flush dev "$IFACE"
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log_end_msg
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done
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fi
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exit 0
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