diff options
Diffstat (limited to 'libexec/rc/rc.d/netwait')
| -rwxr-xr-x | libexec/rc/rc.d/netwait | 86 |
1 files changed, 62 insertions, 24 deletions
diff --git a/libexec/rc/rc.d/netwait b/libexec/rc/rc.d/netwait index 3f374806d97c..05874552cf1c 100755 --- a/libexec/rc/rc.d/netwait +++ b/libexec/rc/rc.d/netwait @@ -2,12 +2,14 @@ # # PROVIDE: netwait # REQUIRE: devd ipfw pf routing -# KEYWORD: nojail # -# The netwait script helps handle two situations: +# The netwait script helps handle three situations: # - Systems with USB or other late-attaching network hardware which # is initialized by devd events. The script waits for all the # interfaces named in the netwait_if list to appear. +# - Systems with IPv6 addresses, especially jails, where we need to +# wait for DAD to complete before starting daemons, as they will +# otherwise fail to bind to IN6ADDR_ANY. # - Systems with statically-configured IP addresses in rc.conf(5). # The IP addresses in the netwait_ip list are pinged. The script # waits for any single IP in the list to respond to the ping. If your @@ -29,28 +31,38 @@ netwait_start() { local ip rc count output link wait_if got_if any_error - if [ -z "${netwait_if}" ] && [ -z "${netwait_ip}" ]; then - err 1 "No interface or IP addresses listed, nothing to wait for" + if [ -z "${netwait_if}" ] && [ -z "${netwait_ip}" ] && + ! checkyesno netwait_dad ; then + err 1 "Nothing to wait for" fi - if [ ${netwait_timeout} -lt 1 ]; then + if ! [ "${netwait_if_timeout:=0}" -ge 1 ]; then + err 1 "netwait_if_timeout must be >= 1" + fi + if ! check_kern_features inet6; then + netwait_dad="NO" + elif ! [ "${netwait_dad_timeout:=0}" -ge 1 ]; then + netwait_dad_timeout=$(($(sysctl -n net.inet6.ip6.dad_count)+1)) + fi + if ! [ "${netwait_timeout:=0}" -ge 1 ]; then err 1 "netwait_timeout must be >= 1" fi + any_error=false + if [ -n "${netwait_if}" ]; then - any_error=0 for wait_if in ${netwait_if}; do echo -n "Waiting for ${wait_if}" link="" - got_if=0 + got_if=false count=1 - # Handle SIGINT (Ctrl-C); force abort of while() loop + # Handle SIGINT (Ctrl-C); force abort of while loop trap break SIGINT while [ ${count} -le ${netwait_if_timeout} ]; do if output=`/sbin/ifconfig ${wait_if} 2>/dev/null`; then - if [ ${got_if} -eq 0 ]; then + if ! ${got_if}; then echo -n ", interface present" - got_if=1 + got_if=true fi link=`expr "${output}" : '.*[[:blank:]]status: \(no carrier\)'` if [ -z "${link}" ]; then @@ -63,22 +75,45 @@ netwait_start() done # Restore default SIGINT handler trap - SIGINT - if [ ${got_if} -eq 0 ]; then + if ! ${got_if}; then echo ", wait failed: interface never appeared." - any_error=1 + any_error=true elif [ -n "${link}" ]; then echo ", wait failed: interface still has no link." - any_error=1 + any_error=true fi done - if [ ${any_error} -eq 1 ]; then - warn "Continuing with startup, but be aware you may not have " - warn "a fully functional networking layer at this point." - fi fi + if checkyesno netwait_dad; then + got_dad=false + # Handle SIGINT (Ctrl-C); force abort of while loop + trap break SIGINT + + echo -n "Waiting for DAD to complete" + count=1 + while [ ${count} -le ${netwait_dad_timeout} ]; do + if ! ifconfig | grep -q 'inet6.*tentative'; then + echo ', done.' + got_dad=true + break + fi + sleep 1 + count=$((count+1)) + done + + # Restore default SIGINT handler + trap - SIGINT + + if ! ${got_dad}; then + echo ', timed out.' + any_error=true + fi + fi + if [ -n "${netwait_ip}" ]; then - # Handle SIGINT (Ctrl-C); force abort of for() loop + got_ip=false + # Handle SIGINT (Ctrl-C); force abort of for loop trap break SIGINT for ip in ${netwait_ip}; do @@ -90,11 +125,9 @@ netwait_start() rc=$? if [ $rc -eq 0 ]; then - # Restore default SIGINT handler - trap - SIGINT - echo ', got response.' - return + got_ip=false + break 2 fi count=$((count+1)) done @@ -104,10 +137,15 @@ netwait_start() # Restore default SIGINT handler trap - SIGINT - warn "Exhausted IP list. Continuing with startup, but be aware you may" - warn "not have a fully functional networking layer at this point." + if ! ${got_ip}; then + any_error=true + fi fi + if ${any_error}; then + warn "Continuing with startup, but be aware you may not have " + warn "a fully functional networking layer at this point." + fi } load_rc_config $name |