60 lines
1.8 KiB
Text
60 lines
1.8 KiB
Text
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#!/bin/sh
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# Clawdie operator USB resolver guard.
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#
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# FreeBSD installer-derived memsticks may leave /etc/resolv.conf pointing at
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# /tmp/bsdinstall_etc/resolv.conf. On this live USB /tmp is tmpfs, so that
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# target disappears at boot and DNS breaks even when DHCP, link, and routing
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# are otherwise healthy. Repair only missing or installer-scratch resolver
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# files; leave a valid operator/DHCP-managed resolver untouched.
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# PROVIDE: clawdie_live_resolver
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# REQUIRE: FILESYSTEMS
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# BEFORE: netif NETWORKING avahi_daemon
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# KEYWORD: nojail
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. /etc/rc.subr
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name="clawdie_live_resolver"
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rcvar="${name}_enable"
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start_cmd="${name}_start"
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stop_cmd=":"
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clawdie_live_resolver_recreate() {
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rm -f /etc/resolv.conf
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{
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echo "# Created by clawdie_live_resolver."
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echo "# DHCP/NetworkMgr may replace this file after interfaces come up."
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} >/etc/resolv.conf
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chmod 0644 /etc/resolv.conf
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}
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clawdie_live_resolver_start() {
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_target=""
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if [ -L /etc/resolv.conf ]; then
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_target="$(readlink /etc/resolv.conf 2>/dev/null || true)"
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case "$_target" in
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/tmp/bsdinstall_etc/*)
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echo "${name}: replacing installer resolver symlink ${_target}"
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clawdie_live_resolver_recreate
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return 0
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;;
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*)
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if [ ! -e /etc/resolv.conf ]; then
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echo "${name}: replacing dangling resolver symlink ${_target}"
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clawdie_live_resolver_recreate
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fi
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return 0
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;;
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esac
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fi
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if [ ! -e /etc/resolv.conf ]; then
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echo "${name}: creating missing /etc/resolv.conf"
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clawdie_live_resolver_recreate
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fi
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}
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load_rc_config "$name"
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: "${clawdie_live_resolver_enable:=YES}"
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run_rc_command "$1"
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