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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 6/7] tools/xendomains: move to sbin and use init helper
On Sat, 2014-03-22 at 03:17 +0100, Luis R. Rodriguez wrote:
> On Fri, Mar 21, 2014 at 03:34:10PM +0000, Ian Campbell wrote:
> > On Wed, 2014-03-19 at 13:58 -0700, Luis R. Rodriguez wrote:
> > > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> > > Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> > > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > > Cc: Jan RÄkorajski <baggins@xxxxxxxxxxxxx>
> > > Cc: M A Young <m.a.young@xxxxxxxxxxxx>
> > > Cc: Jacek Konieczny <jajcus@xxxxxxxxxx>
> > > Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
> > > Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxx>
> > > ---
> > > tools/hotplug/Linux/Makefile | 4 +++-
> > > tools/hotplug/Linux/init.d/xendomains-init | 33
> > > +++++++++++++++++++++++++++++
> > > tools/hotplug/Linux/{init.d => }/xendomains | 0
> >
> > For some reason we also have tools/hotplug/NetBSD/rc.d/xendomains. I
> > presume there is a non-zero chance that it could call this new tool as
> > well.
>
> I rather have someone with NetBSD verify and then make that change.
OK
>
> > > 3 files changed, 36 insertions(+), 1 deletion(-)
> > > create mode 100644 tools/hotplug/Linux/init.d/xendomains-init
> > > rename tools/hotplug/Linux/{init.d => }/xendomains (100%)
> > >
> > > diff --git a/tools/hotplug/Linux/Makefile b/tools/hotplug/Linux/Makefile
> > > index 47655f6..0be2e8a 100644
> > > --- a/tools/hotplug/Linux/Makefile
> > > +++ b/tools/hotplug/Linux/Makefile
> > > @@ -3,7 +3,8 @@ include $(XEN_ROOT)/tools/Rules.mk
> > >
> > > # Init scripts.
> > > XEND_INITD = init.d/xend
> > > -XENDOMAINS_INITD = init.d/xendomains
> > > +XENDOMAINS_INITD = init.d/xendomains-init
> >
> > The suffix is unnecessary given the directory, isn't it? Plus it avoids
> > upgrade hassle by not changing the name of the initscript.
>
> It does and I tried to use the same name but if one does a git mv of a file
> git adds that old file name and path to a temporary .gitignore requiring you
> to use git add -f on that file. It does this because if you insist you loose
> the history of the file after the move. Its also why I changed the name of
> this modified init.
>
> If you don't want to keep the history I can move forward with a mv but the
> history will be lost. I did explain this in the commit log so hope is that
> anyone with the same WTF reaction would understand why this as done, I know
> I said WTF as well, I tried to avoid this at all costs, let me know if anyone
> thinks of a better way.
>
> What I mean by keeping the history is you can do git log --follow on the
> script after the move.
The history is never lost. If git was actually losing history there
would be uproar, and the structure of the repo prevents it anyway.
I skanked up an example commit (see below) and git comes up with:
2 files changed, 54 insertions(+), 610 deletions(-)
rewrite tools/hotplug/Linux/init.d/xendomains (91%)
rename tools/hotplug/Linux/{init.d => }/xendomains (93%)
and "git log --follow tools/hotplug/Linux/xendomains" works exactly as I
expected, so I think things are fine.
Even if this weren't the case (perhaps the copy/rename detection doesn't
notice it in some versions of git) you could still get at the history
manually, you just don't get it automatically, which I think is fine in
this case.
Ian.
commit e9861de906d91fd2a3c3aad0aa5485d0f90cad67
Author: Ian Campbell <ian.campbell@xxxxxxxxxx>
Date: Mon Mar 24 10:06:45 2014 +0000
testing
diff --git a/tools/hotplug/Linux/init.d/xendomains
b/tools/hotplug/Linux/init.d/xendomains
index 59f1e3d..c91e1a5 100644
--- a/tools/hotplug/Linux/init.d/xendomains
+++ b/tools/hotplug/Linux/init.d/xendomains
@@ -27,559 +27,27 @@
# boots / shuts down.
### END INIT INFO
-. /etc/xen/scripts/hotplugpath.sh
-
-CMD=${SBINDIR}/xm
-HEADCOMP="LinuxGuestRecord"
-$CMD list &> /dev/null
-if test $? -ne 0
-then
- CMD=${SBINDIR}/xl
- HEADCOMP="Xen saved domain"
-fi
-
-$CMD list &> /dev/null
-if test $? -ne 0
-then
- exit 0;
-fi
-
-# Correct exit code would probably be 5, but it's enough
-# if xend complains if we're not running as privileged domain
-if ! [ -e /proc/xen/privcmd ]; then
- exit 0
-fi
-
-# See docs/misc/distro_mapping.txt
-if [ -d /var/lock/subsys ]; then
- LOCKFILE=/var/lock/subsys/xendomains
-else
- LOCKFILE=/var/lock/xendomains
-fi
-
-if [ -d /etc/sysconfig ]; then
- XENDOM_CONFIG=/etc/sysconfig/xendomains
-else
- XENDOM_CONFIG=/etc/default/xendomains
-fi
-
-test -r $XENDOM_CONFIG || { echo "$XENDOM_CONFIG not existing";
- if [ "$1" = "stop" ]; then exit 0;
- else exit 6; fi; }
-
-. $XENDOM_CONFIG
-
-# Use the SUSE rc_ init script functions;
-# emulate them on LSB, RH and other systems
-if test -e /etc/rc.status; then
- # SUSE rc script library
- . /etc/rc.status
-else
- _cmd=$1
- declare -a _SMSG
- if test "${_cmd}" = "status"; then
- _SMSG=(running dead dead unused unknown)
- _RC_UNUSED=3
- else
- _SMSG=(done failed failed missed failed skipped unused failed failed)
- _RC_UNUSED=6
- fi
- if test -e /etc/init.d/functions; then
- # REDHAT
- . /etc/init.d/functions
- echo_rc()
- {
- #echo -n " [${_SMSG[${_RC_RV}]}] "
- if test ${_RC_RV} = 0; then
- success " [${_SMSG[${_RC_RV}]}] "
- else
- failure " [${_SMSG[${_RC_RV}]}] "
- fi
- }
- elif test -e /lib/lsb/init-functions; then
- # LSB
- . /lib/lsb/init-functions
- if alias log_success_msg >/dev/null 2>/dev/null; then
- echo_rc()
- {
- echo " [${_SMSG[${_RC_RV}]}] "
- }
- else
- echo_rc()
- {
- if test ${_RC_RV} = 0; then
- log_success_msg " [${_SMSG[${_RC_RV}]}] "
- else
- log_failure_msg " [${_SMSG[${_RC_RV}]}] "
- fi
- }
- fi
- else
- # emulate it
- echo_rc()
- {
- echo " [${_SMSG[${_RC_RV}]}] "
- }
- fi
- rc_reset() { _RC_RV=0; }
- rc_failed()
- {
- if test -z "$1"; then
- _RC_RV=1;
- elif test "$1" != "0"; then
- _RC_RV=$1;
- fi
- return ${_RC_RV}
- }
- rc_check()
- {
- return rc_failed $?
- }
- rc_status()
- {
- rc_failed $?
- if test "$1" = "-r"; then _RC_RV=0; shift; fi
- if test "$1" = "-s"; then rc_failed 5; echo_rc; rc_failed 3; shift; fi
- if test "$1" = "-u"; then rc_failed ${_RC_UNUSED}; echo_rc; rc_failed
3; shift; fi
- if test "$1" = "-v"; then echo_rc; shift; fi
- if test "$1" = "-r"; then _RC_RV=0; shift; fi
- return ${_RC_RV}
- }
- rc_exit() { exit ${_RC_RV}; }
- rc_active()
- {
- if test -z "$RUNLEVEL"; then read RUNLEVEL REST < <(/sbin/runlevel); fi
- if test -e /etc/init.d/S[0-9][0-9]${1}; then return 0; fi
- return 1
- }
-fi
-
-if ! which usleep >&/dev/null
-then
- usleep()
- {
- if [ -n "$1" ]
- then
- sleep $(( $1 / 1000000 ))
- fi
- }
-fi
-
-# Reset status of this service
-rc_reset
-
-##
-# Returns 0 (success) if the given parameter names a directory, and that
-# directory is not empty.
-#
-contains_something()
-{
- if [ -d "$1" ] && [ `/bin/ls $1 | wc -l` -gt 0 ]
- then
- return 0
- else
- return 1
- fi
-}
-
-# read name from xen config file
-rdname()
-{
- NM=$($CMD create --quiet --dryrun --defconfig "$1" |
- sed -n 's/^.*(name \(.*\))$/\1/p;s/^.*"name": "\(.*\)",$/\1/p')
-}
-
-rdnames()
-{
- NAMES=
- if ! contains_something "$XENDOMAINS_AUTO"
- then
- return
- fi
- for dom in $XENDOMAINS_AUTO/*; do
- rdname $dom
- if test -z $NAMES; then
- NAMES=$NM;
- else
- NAMES="$NAMES|$NM"
- fi
- done
-}
-
-LIST_GREP='(domain\|(domid\|(name\|^ {$\|"name":\|"domid":'
-parseln()
-{
- if [[ "$1" =~ '(domain' ]] || [[ "$1" = "{" ]]; then
- name=;id=
- elif [[ "$1" =~ '(name' ]]; then
- name=$(echo $1 | sed -e 's/^.*(name \(.*\))$/\1/')
- elif [[ "$1" =~ '(domid' ]]; then
- id=$(echo $1 | sed -e 's/^.*(domid \(.*\))$/\1/')
- elif [[ "$1" =~ '"name":' ]]; then
- name=$(echo $1 | sed -e 's/^.*"name": "\(.*\)",$/\1/')
- elif [[ "$1" =~ '"domid":' ]]; then
- id=$(echo $1 | sed -e 's/^.*"domid": \(.*\),$/\1/')
- fi
-
- [ -n "$name" -a -n "$id" ] && return 0 || return 1
-}
-
-is_running()
-{
- rdname $1
- RC=1
- name=;id=
- while read LN; do
- parseln "$LN" || continue
- if test $id = 0; then continue; fi
- case $name in
- ($NM)
- RC=0
- ;;
- esac
- done < <($CMD list -l | grep "$LIST_GREP")
- return $RC
-}
-
-start()
-{
- if [ -f $LOCKFILE ]; then
- echo -e "xendomains already running (lockfile exists)"
- return;
- fi
-
- saved_domains=" "
- if [ "$XENDOMAINS_RESTORE" = "true" ] &&
- contains_something "$XENDOMAINS_SAVE"
- then
- mkdir -p $(dirname "$LOCKFILE")
- touch $LOCKFILE
- echo -n "Restoring Xen domains:"
- saved_domains=`ls $XENDOMAINS_SAVE`
- for dom in $XENDOMAINS_SAVE/*; do
- if [ -f $dom ] ; then
- HEADER=`head -c 16 $dom | head -n 1 2> /dev/null`
- if [ "$HEADER" = "$HEADCOMP" ]; then
- echo -n " ${dom##*/}"
- XMR=`$CMD restore $dom 2>&1 1>/dev/null`
- #$CMD restore $dom
- if [ $? -ne 0 ]; then
- echo -e "\nAn error occurred while restoring domain
${dom##*/}:\n$XMR"
- rc_failed $?
- echo -e '!'
- else
- # mv $dom ${dom%/*}/.${dom##*/}
- rm $dom
- fi
- fi
- fi
- done
- echo -e
- fi
-
- if contains_something "$XENDOMAINS_AUTO"
- then
- touch $LOCKFILE
- echo -n "Starting auto Xen domains:"
- # We expect config scripts for auto starting domains to be in
- # XENDOMAINS_AUTO - they could just be symlinks to files elsewhere
-
- # Create all domains with config files in XENDOMAINS_AUTO.
- # TODO: We should record which domain name belongs
- # so we have the option to selectively shut down / migrate later
- # If a domain statefile from $XENDOMAINS_SAVE matches a domain name
- # in $XENDOMAINS_AUTO, do not try to start that domain; if it didn't
- # restore correctly it requires administrative attention.
- for dom in $XENDOMAINS_AUTO/*; do
- echo -n " ${dom##*/}"
- shortdom=$(echo $dom | sed -n 's/^.*\/\(.*\)$/\1/p')
- echo $saved_domains | grep -w $shortdom > /dev/null
- if [ $? -eq 0 ] || is_running $dom; then
- echo -n "(skip)"
- else
- XMC=`$CMD create --quiet --defconfig $dom`
- if [ $? -ne 0 ]; then
- echo -e "\nAn error occurred while creating domain
${dom##*/}: $XMC\n"
- rc_failed $?
- echo -e '!'
- else
- usleep $XENDOMAINS_CREATE_USLEEP
- fi
- fi
- done
- fi
-}
-
-all_zombies()
-{
- name=;id=
- while read LN; do
- parseln "$LN" || continue
- if test $id = 0; then continue; fi
- if test "$state" != "-b---d" -a "$state" != "-----d"; then
- return 1;
- fi
- done < <($CMD list -l | grep "$LIST_GREP")
- return 0
-}
-
-# Wait for max $XENDOMAINS_STOP_MAXWAIT for $CMD $1 to finish;
-# if it has not exited by that time kill it, so the init script will
-# succeed within a finite amount of time; if $2 is nonnull, it will
-# kill the command as well as soon as no domain (except for zombies)
-# are left (used for shutdown --all). Third parameter, if any, suppresses
-# output of dots per working state (formatting issues)
-watchdog_xencmd()
-{
- if test -z "$XENDOMAINS_STOP_MAXWAIT" -o "$XENDOMAINS_STOP_MAXWAIT" = "0";
then
- exit
- fi
-
- usleep 20000
- for no in `seq 0 $XENDOMAINS_STOP_MAXWAIT`; do
- # exit if $CMD save/migrate/shutdown is finished
- PSAX=`ps axlw | grep "$CMD $1" | grep -v grep`
- if test -z "$PSAX"; then exit; fi
- if ! test -n "$3"; then echo -n '.'; fi
- sleep 1
- # go to kill immediately if there's only zombies left
- if all_zombies && test -n "$2"; then break; fi
- done
- sleep 1
- read PSF PSUID PSPID PSPPID < <(echo "$PSAX")
- # kill $CMD $1
- kill $PSPID >/dev/null 2>&1
-
- echo -e .
-}
-
-stop()
-{
- exec 3>&2 2> /dev/null
-
- # Collect list of domains to shut down
- if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
- rdnames
- fi
- echo -n "Shutting down Xen domains:"
- name=;id=
- while read LN; do
- parseln "$LN" || continue
- if test $id = 0; then continue; fi
- echo -n " $name"
- if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
- eval "
- case \"\$name\" in
- ($NAMES)
- # nothing
- ;;
- (*)
- echo -e '(skip)'
- continue
- ;;
- esac
- "
- fi
- # XENDOMAINS_SYSRQ chould be something like just "s"
- # or "s e i u" or even "s e s i u o"
- # for the latter, you should set XENDOMAINS_USLEEP to 1200000 or so
- if test -n "$XENDOMAINS_SYSRQ"; then
- for sysrq in $XENDOMAINS_SYSRQ; do
- echo -n "(SR-$sysrq)"
- XMR=`$CMD sysrq $id $sysrq 2>&1 1>/dev/null`
- if test $? -ne 0; then
- echo -e "\nAn error occurred while doing sysrq on
domain:\n$XMR\n"
- rc_failed $?
- echo -n '!'
- fi
- # usleep just ignores empty arg
- usleep $XENDOMAINS_USLEEP
- done
- fi
- if test "$state" = "-b---d" -o "$state" = "-----d"; then
- echo -n "(zomb)"
- continue
- fi
- if test -n "$XENDOMAINS_MIGRATE"; then
- echo -n "(migr)"
- watchdog_xencmd migrate &
- WDOG_PID=$!
- XMR=`$CMD migrate $id $XENDOMAINS_MIGRATE 2>&1 1>/dev/null`
- if test $? -ne 0; then
- echo -e "\nAn error occurred while migrating domain:\n$XMR\n"
- rc_failed $?
- echo -e '!'
-
- kill $WDOG_PID >/dev/null 2>&1
- else
- kill $WDOG_PID >/dev/null 2>&1
-
- echo -e .
- usleep 1000
- continue
- fi
- fi
- if test -n "$XENDOMAINS_SAVE"; then
- echo -n "(save)"
- watchdog_xencmd save &
- WDOG_PID=$!
- mkdir -p "$XENDOMAINS_SAVE"
- XMR=`$CMD save $id $XENDOMAINS_SAVE/$name 2>&1 1>/dev/null`
- if test $? -ne 0; then
- echo -e "\nAn error occurred while saving domain:\n$XMR\n"
- rc_failed $?
- echo -e '!'
- kill $WDOG_PID >/dev/null 2>&1
- else
- kill $WDOG_PID >/dev/null 2>&1
- echo -e .
- usleep 1000
- continue
- fi
- fi
- if test -n "$XENDOMAINS_SHUTDOWN"; then
- # XENDOMAINS_SHUTDOWN should be "--wait"
- echo -n "(shut)"
- watchdog_xencmd shutdown &
- WDOG_PID=$!
- XMR=`$CMD shutdown $XENDOMAINS_SHUTDOWN $id 2>&1 1>/dev/null`
- if test $? -ne 0; then
- echo -e "\nAn error occurred while shutting down
domain:\n$XMR\n"
- rc_failed $?
- echo -e '!'
- fi
- kill $WDOG_PID >/dev/null 2>&1
- fi
- done < <($CMD list -l | grep "$LIST_GREP")
-
- # NB. this shuts down ALL Xen domains (politely), not just the ones in
- # AUTODIR/*
- # This is because it's easier to do ;-) but arguably if this script is run
- # on system shutdown then it's also the right thing to do.
- if ! all_zombies && test -n "$XENDOMAINS_SHUTDOWN_ALL"; then
- # XENDOMAINS_SHUTDOWN_ALL should be "--all --wait"
- echo -n " SHUTDOWN_ALL "
- watchdog_xencmd shutdown 1 false &
- WDOG_PID=$!
- XMR=`$CMD shutdown $XENDOMAINS_SHUTDOWN_ALL 2>&1 1>/dev/null`
- if test $? -ne 0; then
- echo -e "\nAn error occurred while shutting down all domains:
$XMR\n"
- rc_failed $?
- echo -e '!'
- fi
- kill $WDOG_PID >/dev/null 2>&1
- fi
-
- # Unconditionally delete lock file
- rm -f $LOCKFILE
-
- exec 2>&3
-}
-
-check_domain_up()
-{
- name=;id=
- while read LN; do
- parseln "$LN" || continue
- if test $id = 0; then continue; fi
- case $name in
- ($1)
- return 0
- ;;
- esac
- done < <($CMD list -l | grep "$LIST_GREP")
- return 1
-}
-
-check_all_auto_domains_up()
-{
- if ! contains_something "$XENDOMAINS_AUTO"
- then
- return 0
- fi
- missing=
- for nm in $XENDOMAINS_AUTO/*; do
- rdname $nm
- found=0
- if check_domain_up "$NM"; then
- echo -n " $name"
- else
- missing="$missing $NM"
- fi
- done
- if test -n "$missing"; then
- echo -n " MISS AUTO:$missing"
- return 1
- fi
- return 0
-}
-
-check_all_saved_domains_up()
-{
- if ! contains_something "$XENDOMAINS_SAVE"
- then
- return 0
- fi
- missing=`/bin/ls $XENDOMAINS_SAVE`
- echo -n " MISS SAVED: " $missing
- return 1
-}
-
-# This does NOT necessarily restart all running domains: instead it
-# stops all running domains and then boots all the domains specified in
-# AUTODIR. If other domains have been started manually then they will
-# not get restarted.
-# Commented out to avoid confusion!
-
-restart()
-{
- stop
- start
-}
-
-reload()
-{
- restart
-}
-
-
case "$1" in
start)
- start
- rc_status
- if test -f $LOCKFILE; then rc_status -v; fi
+ foo start
;;
stop)
- stop
- rc_status -v
+ foo stop
;;
restart)
- restart
+ foo restart
;;
reload)
- reload
+ foo reload
;;
status)
- echo -n "Checking for xendomains:"
- if test ! -f $LOCKFILE; then
- rc_failed 3
- else
- check_all_auto_domains_up
- rc_status
- check_all_saved_domains_up
- rc_status
- fi
- rc_status -v
+ foo status -v
;;
*)
echo "Usage: $0 {start|stop|restart|reload|status}"
- rc_failed 3
- rc_status -v
;;
esac
-
-rc_exit
diff --git a/tools/hotplug/Linux/xendomains b/tools/hotplug/Linux/xendomains
new file mode 100644
index 0000000..7364522
--- /dev/null
+++ b/tools/hotplug/Linux/xendomains
@@ -0,0 +1,561 @@
+#!/bin/bash
+#
+# $libexec/xendomains
+# Start / stop domains automatically when domain 0 boots / shuts down.
+
+. /etc/xen/scripts/hotplugpath.sh
+
+CMD=${SBINDIR}/xm
+HEADCOMP="LinuxGuestRecord"
+$CMD list &> /dev/null
+if test $? -ne 0
+then
+ CMD=${SBINDIR}/xl
+ HEADCOMP="Xen saved domain"
+fi
+
+$CMD list &> /dev/null
+if test $? -ne 0
+then
+ exit 0;
+fi
+
+# Correct exit code would probably be 5, but it's enough
+# if xend complains if we're not running as privileged domain
+if ! [ -e /proc/xen/privcmd ]; then
+ exit 0
+fi
+
+# See docs/misc/distro_mapping.txt
+if [ -d /var/lock/subsys ]; then
+ LOCKFILE=/var/lock/subsys/xendomains
+else
+ LOCKFILE=/var/lock/xendomains
+fi
+
+if [ -d /etc/sysconfig ]; then
+ XENDOM_CONFIG=/etc/sysconfig/xendomains
+else
+ XENDOM_CONFIG=/etc/default/xendomains
+fi
+
+test -r $XENDOM_CONFIG || { echo "$XENDOM_CONFIG not existing";
+ if [ "$1" = "stop" ]; then exit 0;
+ else exit 6; fi; }
+
+. $XENDOM_CONFIG
+
+# Use the SUSE rc_ init script functions;
+# emulate them on LSB, RH and other systems
+if test -e /etc/rc.status; then
+ # SUSE rc script library
+ . /etc/rc.status
+else
+ _cmd=$1
+ declare -a _SMSG
+ if test "${_cmd}" = "status"; then
+ _SMSG=(running dead dead unused unknown)
+ _RC_UNUSED=3
+ else
+ _SMSG=(done failed failed missed failed skipped unused failed failed)
+ _RC_UNUSED=6
+ fi
+ if test -e /etc/init.d/functions; then
+ # REDHAT
+ . /etc/init.d/functions
+ echo_rc()
+ {
+ #echo -n " [${_SMSG[${_RC_RV}]}] "
+ if test ${_RC_RV} = 0; then
+ success " [${_SMSG[${_RC_RV}]}] "
+ else
+ failure " [${_SMSG[${_RC_RV}]}] "
+ fi
+ }
+ elif test -e /lib/lsb/init-functions; then
+ # LSB
+ . /lib/lsb/init-functions
+ if alias log_success_msg >/dev/null 2>/dev/null; then
+ echo_rc()
+ {
+ echo " [${_SMSG[${_RC_RV}]}] "
+ }
+ else
+ echo_rc()
+ {
+ if test ${_RC_RV} = 0; then
+ log_success_msg " [${_SMSG[${_RC_RV}]}] "
+ else
+ log_failure_msg " [${_SMSG[${_RC_RV}]}] "
+ fi
+ }
+ fi
+ else
+ # emulate it
+ echo_rc()
+ {
+ echo " [${_SMSG[${_RC_RV}]}] "
+ }
+ fi
+ rc_reset() { _RC_RV=0; }
+ rc_failed()
+ {
+ if test -z "$1"; then
+ _RC_RV=1;
+ elif test "$1" != "0"; then
+ _RC_RV=$1;
+ fi
+ return ${_RC_RV}
+ }
+ rc_check()
+ {
+ return rc_failed $?
+ }
+ rc_status()
+ {
+ rc_failed $?
+ if test "$1" = "-r"; then _RC_RV=0; shift; fi
+ if test "$1" = "-s"; then rc_failed 5; echo_rc; rc_failed 3; shift; fi
+ if test "$1" = "-u"; then rc_failed ${_RC_UNUSED}; echo_rc; rc_failed
3; shift; fi
+ if test "$1" = "-v"; then echo_rc; shift; fi
+ if test "$1" = "-r"; then _RC_RV=0; shift; fi
+ return ${_RC_RV}
+ }
+ rc_exit() { exit ${_RC_RV}; }
+ rc_active()
+ {
+ if test -z "$RUNLEVEL"; then read RUNLEVEL REST < <(/sbin/runlevel); fi
+ if test -e /etc/init.d/S[0-9][0-9]${1}; then return 0; fi
+ return 1
+ }
+fi
+
+if ! which usleep >&/dev/null
+then
+ usleep()
+ {
+ if [ -n "$1" ]
+ then
+ sleep $(( $1 / 1000000 ))
+ fi
+ }
+fi
+
+# Reset status of this service
+rc_reset
+
+##
+# Returns 0 (success) if the given parameter names a directory, and that
+# directory is not empty.
+#
+contains_something()
+{
+ if [ -d "$1" ] && [ `/bin/ls $1 | wc -l` -gt 0 ]
+ then
+ return 0
+ else
+ return 1
+ fi
+}
+
+# read name from xen config file
+rdname()
+{
+ NM=$($CMD create --quiet --dryrun --defconfig "$1" |
+ sed -n 's/^.*(name \(.*\))$/\1/p;s/^.*"name": "\(.*\)",$/\1/p')
+}
+
+rdnames()
+{
+ NAMES=
+ if ! contains_something "$XENDOMAINS_AUTO"
+ then
+ return
+ fi
+ for dom in $XENDOMAINS_AUTO/*; do
+ rdname $dom
+ if test -z $NAMES; then
+ NAMES=$NM;
+ else
+ NAMES="$NAMES|$NM"
+ fi
+ done
+}
+
+LIST_GREP='(domain\|(domid\|(name\|^ {$\|"name":\|"domid":'
+parseln()
+{
+ if [[ "$1" =~ '(domain' ]] || [[ "$1" = "{" ]]; then
+ name=;id=
+ elif [[ "$1" =~ '(name' ]]; then
+ name=$(echo $1 | sed -e 's/^.*(name \(.*\))$/\1/')
+ elif [[ "$1" =~ '(domid' ]]; then
+ id=$(echo $1 | sed -e 's/^.*(domid \(.*\))$/\1/')
+ elif [[ "$1" =~ '"name":' ]]; then
+ name=$(echo $1 | sed -e 's/^.*"name": "\(.*\)",$/\1/')
+ elif [[ "$1" =~ '"domid":' ]]; then
+ id=$(echo $1 | sed -e 's/^.*"domid": \(.*\),$/\1/')
+ fi
+
+ [ -n "$name" -a -n "$id" ] && return 0 || return 1
+}
+
+is_running()
+{
+ rdname $1
+ RC=1
+ name=;id=
+ while read LN; do
+ parseln "$LN" || continue
+ if test $id = 0; then continue; fi
+ case $name in
+ ($NM)
+ RC=0
+ ;;
+ esac
+ done < <($CMD list -l | grep "$LIST_GREP")
+ return $RC
+}
+
+start()
+{
+ if [ -f $LOCKFILE ]; then
+ echo -e "xendomains already running (lockfile exists)"
+ return;
+ fi
+
+ saved_domains=" "
+ if [ "$XENDOMAINS_RESTORE" = "true" ] &&
+ contains_something "$XENDOMAINS_SAVE"
+ then
+ mkdir -p $(dirname "$LOCKFILE")
+ touch $LOCKFILE
+ echo -n "Restoring Xen domains:"
+ saved_domains=`ls $XENDOMAINS_SAVE`
+ for dom in $XENDOMAINS_SAVE/*; do
+ if [ -f $dom ] ; then
+ HEADER=`head -c 16 $dom | head -n 1 2> /dev/null`
+ if [ "$HEADER" = "$HEADCOMP" ]; then
+ echo -n " ${dom##*/}"
+ XMR=`$CMD restore $dom 2>&1 1>/dev/null`
+ #$CMD restore $dom
+ if [ $? -ne 0 ]; then
+ echo -e "\nAn error occurred while restoring domain
${dom##*/}:\n$XMR"
+ rc_failed $?
+ echo -e '!'
+ else
+ # mv $dom ${dom%/*}/.${dom##*/}
+ rm $dom
+ fi
+ fi
+ fi
+ done
+ echo -e
+ fi
+
+ if contains_something "$XENDOMAINS_AUTO"
+ then
+ touch $LOCKFILE
+ echo -n "Starting auto Xen domains:"
+ # We expect config scripts for auto starting domains to be in
+ # XENDOMAINS_AUTO - they could just be symlinks to files elsewhere
+
+ # Create all domains with config files in XENDOMAINS_AUTO.
+ # TODO: We should record which domain name belongs
+ # so we have the option to selectively shut down / migrate later
+ # If a domain statefile from $XENDOMAINS_SAVE matches a domain name
+ # in $XENDOMAINS_AUTO, do not try to start that domain; if it didn't
+ # restore correctly it requires administrative attention.
+ for dom in $XENDOMAINS_AUTO/*; do
+ echo -n " ${dom##*/}"
+ shortdom=$(echo $dom | sed -n 's/^.*\/\(.*\)$/\1/p')
+ echo $saved_domains | grep -w $shortdom > /dev/null
+ if [ $? -eq 0 ] || is_running $dom; then
+ echo -n "(skip)"
+ else
+ XMC=`$CMD create --quiet --defconfig $dom`
+ if [ $? -ne 0 ]; then
+ echo -e "\nAn error occurred while creating domain
${dom##*/}: $XMC\n"
+ rc_failed $?
+ echo -e '!'
+ else
+ usleep $XENDOMAINS_CREATE_USLEEP
+ fi
+ fi
+ done
+ fi
+}
+
+all_zombies()
+{
+ name=;id=
+ while read LN; do
+ parseln "$LN" || continue
+ if test $id = 0; then continue; fi
+ if test "$state" != "-b---d" -a "$state" != "-----d"; then
+ return 1;
+ fi
+ done < <($CMD list -l | grep "$LIST_GREP")
+ return 0
+}
+
+# Wait for max $XENDOMAINS_STOP_MAXWAIT for $CMD $1 to finish;
+# if it has not exited by that time kill it, so the init script will
+# succeed within a finite amount of time; if $2 is nonnull, it will
+# kill the command as well as soon as no domain (except for zombies)
+# are left (used for shutdown --all). Third parameter, if any, suppresses
+# output of dots per working state (formatting issues)
+watchdog_xencmd()
+{
+ if test -z "$XENDOMAINS_STOP_MAXWAIT" -o "$XENDOMAINS_STOP_MAXWAIT" = "0";
then
+ exit
+ fi
+
+ usleep 20000
+ for no in `seq 0 $XENDOMAINS_STOP_MAXWAIT`; do
+ # exit if $CMD save/migrate/shutdown is finished
+ PSAX=`ps axlw | grep "$CMD $1" | grep -v grep`
+ if test -z "$PSAX"; then exit; fi
+ if ! test -n "$3"; then echo -n '.'; fi
+ sleep 1
+ # go to kill immediately if there's only zombies left
+ if all_zombies && test -n "$2"; then break; fi
+ done
+ sleep 1
+ read PSF PSUID PSPID PSPPID < <(echo "$PSAX")
+ # kill $CMD $1
+ kill $PSPID >/dev/null 2>&1
+
+ echo -e .
+}
+
+stop()
+{
+ exec 3>&2 2> /dev/null
+
+ # Collect list of domains to shut down
+ if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
+ rdnames
+ fi
+ echo -n "Shutting down Xen domains:"
+ name=;id=
+ while read LN; do
+ parseln "$LN" || continue
+ if test $id = 0; then continue; fi
+ echo -n " $name"
+ if test "$XENDOMAINS_AUTO_ONLY" = "true"; then
+ eval "
+ case \"\$name\" in
+ ($NAMES)
+ # nothing
+ ;;
+ (*)
+ echo -e '(skip)'
+ continue
+ ;;
+ esac
+ "
+ fi
+ # XENDOMAINS_SYSRQ chould be something like just "s"
+ # or "s e i u" or even "s e s i u o"
+ # for the latter, you should set XENDOMAINS_USLEEP to 1200000 or so
+ if test -n "$XENDOMAINS_SYSRQ"; then
+ for sysrq in $XENDOMAINS_SYSRQ; do
+ echo -n "(SR-$sysrq)"
+ XMR=`$CMD sysrq $id $sysrq 2>&1 1>/dev/null`
+ if test $? -ne 0; then
+ echo -e "\nAn error occurred while doing sysrq on
domain:\n$XMR\n"
+ rc_failed $?
+ echo -n '!'
+ fi
+ # usleep just ignores empty arg
+ usleep $XENDOMAINS_USLEEP
+ done
+ fi
+ if test "$state" = "-b---d" -o "$state" = "-----d"; then
+ echo -n "(zomb)"
+ continue
+ fi
+ if test -n "$XENDOMAINS_MIGRATE"; then
+ echo -n "(migr)"
+ watchdog_xencmd migrate &
+ WDOG_PID=$!
+ XMR=`$CMD migrate $id $XENDOMAINS_MIGRATE 2>&1 1>/dev/null`
+ if test $? -ne 0; then
+ echo -e "\nAn error occurred while migrating domain:\n$XMR\n"
+ rc_failed $?
+ echo -e '!'
+
+ kill $WDOG_PID >/dev/null 2>&1
+ else
+ kill $WDOG_PID >/dev/null 2>&1
+
+ echo -e .
+ usleep 1000
+ continue
+ fi
+ fi
+ if test -n "$XENDOMAINS_SAVE"; then
+ echo -n "(save)"
+ watchdog_xencmd save &
+ WDOG_PID=$!
+ mkdir -p "$XENDOMAINS_SAVE"
+ XMR=`$CMD save $id $XENDOMAINS_SAVE/$name 2>&1 1>/dev/null`
+ if test $? -ne 0; then
+ echo -e "\nAn error occurred while saving domain:\n$XMR\n"
+ rc_failed $?
+ echo -e '!'
+ kill $WDOG_PID >/dev/null 2>&1
+ else
+ kill $WDOG_PID >/dev/null 2>&1
+ echo -e .
+ usleep 1000
+ continue
+ fi
+ fi
+ if test -n "$XENDOMAINS_SHUTDOWN"; then
+ # XENDOMAINS_SHUTDOWN should be "--wait"
+ echo -n "(shut)"
+ watchdog_xencmd shutdown &
+ WDOG_PID=$!
+ XMR=`$CMD shutdown $XENDOMAINS_SHUTDOWN $id 2>&1 1>/dev/null`
+ if test $? -ne 0; then
+ echo -e "\nAn error occurred while shutting down
domain:\n$XMR\n"
+ rc_failed $?
+ echo -e '!'
+ fi
+ kill $WDOG_PID >/dev/null 2>&1
+ fi
+ done < <($CMD list -l | grep "$LIST_GREP")
+
+ # NB. this shuts down ALL Xen domains (politely), not just the ones in
+ # AUTODIR/*
+ # This is because it's easier to do ;-) but arguably if this script is run
+ # on system shutdown then it's also the right thing to do.
+ if ! all_zombies && test -n "$XENDOMAINS_SHUTDOWN_ALL"; then
+ # XENDOMAINS_SHUTDOWN_ALL should be "--all --wait"
+ echo -n " SHUTDOWN_ALL "
+ watchdog_xencmd shutdown 1 false &
+ WDOG_PID=$!
+ XMR=`$CMD shutdown $XENDOMAINS_SHUTDOWN_ALL 2>&1 1>/dev/null`
+ if test $? -ne 0; then
+ echo -e "\nAn error occurred while shutting down all domains:
$XMR\n"
+ rc_failed $?
+ echo -e '!'
+ fi
+ kill $WDOG_PID >/dev/null 2>&1
+ fi
+
+ # Unconditionally delete lock file
+ rm -f $LOCKFILE
+
+ exec 2>&3
+}
+
+check_domain_up()
+{
+ name=;id=
+ while read LN; do
+ parseln "$LN" || continue
+ if test $id = 0; then continue; fi
+ case $name in
+ ($1)
+ return 0
+ ;;
+ esac
+ done < <($CMD list -l | grep "$LIST_GREP")
+ return 1
+}
+
+check_all_auto_domains_up()
+{
+ if ! contains_something "$XENDOMAINS_AUTO"
+ then
+ return 0
+ fi
+ missing=
+ for nm in $XENDOMAINS_AUTO/*; do
+ rdname $nm
+ found=0
+ if check_domain_up "$NM"; then
+ echo -n " $name"
+ else
+ missing="$missing $NM"
+ fi
+ done
+ if test -n "$missing"; then
+ echo -n " MISS AUTO:$missing"
+ return 1
+ fi
+ return 0
+}
+
+check_all_saved_domains_up()
+{
+ if ! contains_something "$XENDOMAINS_SAVE"
+ then
+ return 0
+ fi
+ missing=`/bin/ls $XENDOMAINS_SAVE`
+ echo -n " MISS SAVED: " $missing
+ return 1
+}
+
+# This does NOT necessarily restart all running domains: instead it
+# stops all running domains and then boots all the domains specified in
+# AUTODIR. If other domains have been started manually then they will
+# not get restarted.
+# Commented out to avoid confusion!
+
+restart()
+{
+ stop
+ start
+}
+
+reload()
+{
+ restart
+}
+
+
+case "$1" in
+ start)
+ start
+ rc_status
+ if test -f $LOCKFILE; then rc_status -v; fi
+ ;;
+
+ stop)
+ stop
+ rc_status -v
+ ;;
+
+ restart)
+ restart
+ ;;
+ reload)
+ reload
+ ;;
+
+ status)
+ echo -n "Checking for xendomains:"
+ if test ! -f $LOCKFILE; then
+ rc_failed 3
+ else
+ check_all_auto_domains_up
+ rc_status
+ check_all_saved_domains_up
+ rc_status
+ fi
+ rc_status -v
+ ;;
+
+ *)
+ echo "Usage: $0 {start|stop|restart|reload|status}"
+ rc_failed 3
+ rc_status -v
+ ;;
+esac
+
+rc_exit
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