Created attachment 402392 [details] emerge --info Hi there, I have just upgraded my openssh to 6.7_p1. After install, I restarted the service (/etc/init.d/sshd restart) and the script froze on " * Caching service dependencies ...", never exiting. After some strace, it appeared that /sbin/depscan.sh was stuck in some gawk commande line (last lines of "/sbin/depscan.sh -d") : + echo -ne ' * Caching service dependencies ...' * Caching service dependencies ...+ LAST_E_CMD=einfon + return 0 + [[ yes == \y\e\s ]] + echo + LAST_E_LEN=35 + LAST_E_CMD=ebegin + return 0 + rm -rf /var/lib/init.d/depcache /var/lib/init.d/deptree '/var/lib/init.d/broken/*' '/var/lib/init.d/snapshot/*' + retval=0 + SVCDIR=/var/lib/init.d + DEPTYPES='need use' + ORDTYPES='before after' + export SVCDIR DEPTYPES ORDTYPES + cd /etc/init.d + /bin/gawk -f /lib/rcscripts/awk/functions.awk -f /lib/rcscripts/awk/cachedepends.awk + bash /var/lib/init.d/depcache + /bin/gawk -f /lib/rcscripts/awk/functions.awk -f /lib/rcscripts/awk/gendepends.awk ^C When removing /etc/init.d/sshd, depscan.sh worked properly. When reinstalling the newly installed /etc/init.d/sshd, depscan.sh stalled again. I commented a big part of the depend() function of /etc/init.d/sshd script, from: depend() { use logger dns if [ "${rc_need+set}" = "set" ]; then : # Do nothing, the user has explicitly set rc_need else warn_addr='' for x in $(awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" 2>/dev/null) ; do case "$x" in 0.0.0.0|0.0.0.0:*) ;; ::|\[::\]*) ;; *) warn_addr="${warn_addr} $x" ;; esac done unset x if [ "${warn_addr:+set}" = "set" ]; then need net ewarn "You are binding an interface in ListenAddress statement in your sshd_config!" ewarn "You must add rc_need=\"net.FOO\" to your /etc/conf.d/sshd" ewarn "where FOO is the interface(s) providing the following address(es):" ewarn "${warn_addr}" fi unset warn_addr fi } to: depend() { use logger dns # if [ "${rc_need+set}" = "set" ]; then # : # Do nothing, the user has explicitly set rc_need # else # warn_addr='' # for x in $(awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" 2>/dev/null) ; do # case "$x" in # 0.0.0.0|0.0.0.0:*) ;; # ::|\[::\]*) ;; # *) warn_addr="${warn_addr} $x" ;; # esac # done # unset x # if [ "${warn_addr:+set}" = "set" ]; then # need net # ewarn "You are binding an interface in ListenAddress statement in your sshd_config!" # ewarn "You must add rc_need=\"net.FOO\" to your /etc/conf.d/sshd" # ewarn "where FOO is the interface(s) providing the following address(es):" # ewarn "${warn_addr}" # fi # unset warn_addr # fi } This "commenting session" led to /sbin/depscan.sh working properly. I suppose it could be caused by this depend() function making use of "awk" (hypothesis) : the depend() function is cached into /var/lib/init.d/depcache by depscan.sh, and /var/lib/init.d/depcache is then used by /bin/gawk -f /lib/rcscripts/awk/functions.awk -f /lib/rcscripts/awk/gendepends.awk (the stalled command). More generally, the stalled/frozen /sbin/depscan.sh problem receive generates a lot of questions on the web and it looks like it could be often linked to the depend() function cached and the re-used by gawk. Don't hesitate to ask for more spec/details and tests if needed. Regards
(In reply to Georges A. from comment #0) try commenting out just the for loop. if that works, add some debugging info: ewarn "SSHD_CONFIG = $SSHD_CONFIG" then run the awk command manually on your system: awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" what is /usr/bin/awk pointing to ? gawk ? what version of that package do you have installed ?
(In reply to SpanKY from comment #1) > (In reply to Georges A. from comment #0) > > try commenting out just the for loop. if that works, add some debugging > info: > ewarn "SSHD_CONFIG = $SSHD_CONFIG" > > then run the awk command manually on your system: > awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" > > what is /usr/bin/awk pointing to ? gawk ? what version of that package do > you have installed ? Hi, Commenting out the for loop makes the script stall/freeze. Manually running awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" equivalent to awk '/^ListenAddress/{ print $2 }' /etc/ssh/sshd_config works properly Info: # which awk /usr/bin/awk # ls -la /usr/bin/awk lrwxrwxrwx 1 root root 15 2011-04-04 15:15 /usr/bin/awk -> /bin/gawk-3.1.6 # equery belongs /bin/gawk-3.1.6 [ Searching for file(s) /bin/gawk-3.1.6 in *... ] sys-apps/gawk-3.1.6 (/bin/gawk-3.1.6) Regards, G.
(In reply to Georges A. from comment #2) put a `set -x` at the top of depend func then and see what tracing output you get. the fact that it hangs on a few variable checks is suspicious.
(In reply to SpanKY from comment #3) > (In reply to Georges A. from comment #2) > > put a `set -x` at the top of depend func then and see what tracing output > you get. the fact that it hangs on a few variable checks is suspicious. Here is the output: # /etc/init.d/sshd restart * Caching service dependencies ... + use logger dns + echo 'USE logger dns' + return 0 + '[' '' = set ']' + warn_addr= ++ awk '/^ListenAddress/{ print $2 }' '' ^C * ERROR: sshd caught an interrupt
you're running a pretty old set of packages. what version of openrc do you have exactly ?
(In reply to SpanKY from comment #5) > you're running a pretty old set of packages. what version of openrc do you > have exactly ? I am running baselayout-1 and, I suppose, no openrc :(
sorry, but baselayout-1 hasn't been supported for a long time. looks like a change in the depscan logic doesn't work here -- namely that vars initialized in the global scope aren't preserved for the depend function. feel free to keep that hack locally, but we dropped support for baselayout-1 in the tree a while ago.
(In reply to SpanKY from comment #7) > sorry, but baselayout-1 hasn't been supported for a long time. looks like a > change in the depscan logic doesn't work here -- namely that vars > initialized in the global scope aren't preserved for the depend function. > > feel free to keep that hack locally, but we dropped support for baselayout-1 > in the tree a while ago. Big thank you for your help & feedback ! Regards, G.
