98 lines
2.1 KiB
Bash
Executable File
98 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# $FreeBSD$
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#
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# PROVIDE: netwait
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# REQUIRE: NETWORKING
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# KEYWORD: nojail
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#
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# The netwait script is intended to be used by systems which have
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# statically-configured IP addresses in rc.conf(5). If your system
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# uses DHCP, you should use synchronous_dhclient="YES" in your
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# /etc/rc.conf instead of using netwait.
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. /etc/rc.subr
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name="netwait"
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rc_var=`set_rcvar`
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start_cmd="${name}_start"
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stop_cmd=":"
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netwait_start()
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{
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local ip rc count output link
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if [ -z "${netwait_ip}" ]; then
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err 1 "You must define one or more IP addresses in netwait_ip"
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fi
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if [ ${netwait_timeout} -lt 1 ]; then
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err 1 "netwait_timeout must be >= 1"
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fi
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# Handle SIGINT (Ctrl-C); force abort of while() loop
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trap break SIGINT
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if [ -n "${netwait_if}" ]; then
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echo -n "Waiting for $netwait_if to have link"
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count=1
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while [ ${count} -le ${netwait_if_timeout} ]; do
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if output=`/sbin/ifconfig ${netwait_if} 2>/dev/null`; then
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link=`expr "${output}" : '.*[[:blank:]]status: \(no carrier\)'`
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if [ -z "${link}" ]; then
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echo '.'
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break
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fi
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else
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echo ''
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err 1 "ifconfig ${netwait_if} failed"
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fi
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sleep 1
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count=$((count+1))
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done
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if [ -n "${link}" ]; then
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# Restore default SIGINT handler
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trap - SIGINT
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echo ''
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warn "Interface still has no link. Continuing with startup, but"
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warn "be aware you may not have a fully functional networking"
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warn "layer at this point."
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return
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fi
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fi
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# Handle SIGINT (Ctrl-C); force abort of while() loop
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trap break SIGINT
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for ip in ${netwait_ip}; do
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echo -n "Waiting for ${ip} to respond to ICMP"
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count=1
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while [ ${count} -le ${netwait_timeout} ]; do
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/sbin/ping -t 1 -c 1 -o ${ip} >/dev/null 2>&1
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rc=$?
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if [ $rc -eq 0 ]; then
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# Restore default SIGINT handler
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trap - SIGINT
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echo '.'
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return
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fi
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count=$((count+1))
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done
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echo ': No response from host.'
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done
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# Restore default SIGINT handler
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trap - SIGINT
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warn "Exhausted IP list. Continuing with startup, but be aware you may"
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warn "not have a fully functional networking layer at this point."
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}
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load_rc_config $name
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run_rc_command "$1"
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