6 # REQUIRE: devd ipfilter ipfw pf routing
9 # The netwait script helps handle two situations:
10 # - Systems with USB or other late-attaching network hardware which
11 # is initialized by devd events. The script waits for all the
12 # interfaces named in the netwait_if list to appear.
13 # - Systems with statically-configured IP addresses in rc.conf(5).
14 # The IP addresses in the netwait_ip list are pinged. The script
15 # waits for any single IP in the list to respond to the ping. If your
16 # system uses DHCP, you should probably use synchronous_dhclient="YES"
17 # in your /etc/rc.conf instead of netwait_ip.
18 # Either or both of the wait lists can be used (at least one must be
19 # non-empty if netwait is enabled).
24 rcvar="netwait_enable"
26 start_cmd="${name}_start"
31 local ip rc count output link wait_if got_if any_error
33 if [ -z "${netwait_if}" ] && [ -z "${netwait_ip}" ]; then
34 err 1 "No interface or IP addresses listed, nothing to wait for"
37 if [ ${netwait_timeout} -lt 1 ]; then
38 err 1 "netwait_timeout must be >= 1"
41 if [ -n "${netwait_if}" ]; then
43 for wait_if in ${netwait_if}; do
44 echo -n "Waiting for ${wait_if}"
48 # Handle SIGINT (Ctrl-C); force abort of while() loop
50 while [ ${count} -le ${netwait_if_timeout} ]; do
51 if output=`/sbin/ifconfig ${wait_if} 2>/dev/null`; then
52 if [ ${got_if} -eq 0 ]; then
53 echo -n ", interface present"
56 link=`expr "${output}" : '.*[[:blank:]]status: \(no carrier\)'`
57 if [ -z "${link}" ]; then
65 # Restore default SIGINT handler
67 if [ ${got_if} -eq 0 ]; then
68 echo ", wait failed: interface never appeared."
70 elif [ -n "${link}" ]; then
71 echo ", wait failed: interface still has no link."
75 if [ ${any_error} -eq 1 ]; then
76 warn "Continuing with startup, but be aware you may not have "
77 warn "a fully functional networking layer at this point."
81 if [ -n "${netwait_ip}" ]; then
82 # Handle SIGINT (Ctrl-C); force abort of for() loop
85 for ip in ${netwait_ip}; do
86 echo -n "Waiting for ${ip} to respond to ICMP ping"
89 while [ ${count} -le ${netwait_timeout} ]; do
90 /sbin/ping -t 1 -c 1 -o ${ip} >/dev/null 2>&1
93 if [ $rc -eq 0 ]; then
94 # Restore default SIGINT handler
97 echo ', got response.'
102 echo ', failed: No response from host.'
105 # Restore default SIGINT handler
108 warn "Exhausted IP list. Continuing with startup, but be aware you may"
109 warn "not have a fully functional networking layer at this point."