3 # Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; version 2 of the License.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 declare -r _VS_NEWLINE=${_VS_NEWLINE:0-1}
35 test ! $mod "$i" || { file=$i; break; }
38 test -z "$i" -o "$file" || {
39 echo "Can not find file for '$var'; aborting"
59 test ! -s "$dst" || return 0
65 test "$tmp" -a -s "$tmp" || return 0
69 function getPhysicalDir
71 ( set -P && cd "$1" && pwd )
74 ## Usage: logging <message>
77 if test "$_VS_LOGFILE"; then
78 echo "$@" >>"$_VS_LOGFILE"
84 ## Usage: warning <message>
87 if test "$_VS_ERRFILE"; then
88 echo "$@" >>"$_VS_ERRFILE"
94 ## Usage: panic <message>
97 if test "$_VS_ERRFILE"; then
98 echo "$@" >>"$_VS_ERRFILE"
106 ## Usage: execute <message>
109 test -z "${DEBUG_EXEC:-}" || echo "$@"
110 test "${DEBUG_EXEC:-}" = noexec || exec "$@"
114 ## Usage: isNumber <arg>
118 let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a "$1" || return 1
122 ## Usage: colorize <style> <command>
132 findFile cfile "$CONFDIR"/.defaults/styles/"$style" ''
133 if test "$cfile"; then
137 (bold) echo -ne "\e[1m";;
138 (emph) echo -ne "\e[34m";;
139 (info) echo -ne "\e[0;34m";;
140 (warn*) echo -ne "\e[1;31m";;
141 (error) echo -ne "\e[1;33;41m";;
151 ## Usage: xtermTitle <title>
155 echo -ne "\e]0;$@\007"
159 ## Usage: lock <lockfile> [<timeout>]
162 local tmp=$(mktemp /tmp/vserver-lock.XXXXXX)
166 $_LOCKFILE "$1" $tmp $2 &
167 grep -q true $tmp 2>/dev/null || return 1
169 _VS_LOCKS="$! $_VS_LOCKS"
172 ## Usage: unlock [<num>]
179 while test "$#" -gt 0; do
180 kill -HUP "$1" >/dev/null || :
182 test "$num" != 1 || break
183 test -z "$num" || let --num
188 function _pkgMountBindDir()
190 test "$1" != "$2" || return 0
192 mount -n --bind "$1" "$2"
195 function _pkgSetVarsBase
199 if test -d "$vserver/vdir"; then
201 VDIR=$(getPhysicalDir "$vserver/vdir")
203 PKGDIR=$BASEDIR/apps/pkgmgmt
204 test -d "$PKGDIR" || {
205 echo "Can not find configuration-directory for package-managment tools"
208 findDir EXECDIR $PKGDIR/execdir /
210 VDIR=$(getPhysicalDir "$vserver")
215 BASEDIR=$CONFDIR/$vserver
216 test -d "$BASEDIR" || {
217 echo "Can not find configuration-directory"
222 test -d "$VDIR" || VDIR=$DEFAULT_VSERVERDIR/$vserver
223 VDIR=$(getPhysicalDir "$VDIR")
225 PKGDIR=$BASEDIR/apps/pkgmgmt
226 test -d "$PKGDIR" || {
227 echo "Can not find configuration-directory for package-managment tools"
231 findDir EXECDIR $PKGDIR/execdir /
236 if test -z "$WORKAROUND_106057"; then
239 _rpmdb_mntpoint=/.rpmdb
243 function _pkgSetVarsRPM
245 if test "$PKGDIR"; then
246 findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
247 findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
249 findDir RPMLIBDIR $PKGDIR/rpmlib /
252 findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
253 findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
257 RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
258 RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
261 function _pkgSetVarsApt
263 if test "$PKGDIR"; then
264 findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
265 findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
266 findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
267 findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
269 findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
270 findDir APTSTATEDIR "$VDIR"/var/state/apt
271 findDir APTCACHEDIR "$VDIR"/var/cache/apt
272 findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
275 findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
276 test -z "$APT_CONFIG" || export APT_CONFIG
279 function _pkgMountBase
284 function _pkgMountApt
289 function _pkgMountRPM
291 _pkgMountBindDir "$RPMETCDIR" /etc/rpm
292 test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
294 pushd "$VDIR" >/dev/null
296 "$_SECURE_MOUNT" --chroot -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
297 test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
299 test -e "$VDIR"/proc/self/status || \
300 "$_SECURE_MOUNT" --chroot -n -t proc none /proc
305 function _pkgSetEnvBase
307 test "$EXECDIR" = "/" || {
309 LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
312 export PATH LD_LIBRARY_PATH
315 function _pkgSetEnvApt
320 function _pkgSetEnvRPM
323 RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
324 RPM_BINARY=$_VRPM_PRELOAD
326 export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
338 rpm) _pkgSetVarsRPM;;
339 apt) _pkgSetVarsApt;;
340 *) echo "Unknown packaging flavor" >&2; exit 1;;
361 _PKG_VSERVER=$vserver
364 function isAvoidNamespace
368 $_VSERVER_INFO - FEATURE namespace || return 0
369 cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
370 test ! -e "$cfgdir"/namespace || return 1
371 test -e "$CONFDIR"/.defaults/nonamespace -o \
372 -e "$cfgdir"/nonamespace
375 function getAllVservers
380 for i in $CONFDIR/*; do
381 test -d "$i" || continue
382 test ! -e "$i"/disabled || continue
383 test -d "$i"/vdir || continue
388 _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}")
391 eval $1='( "${_tmp[@]}" )'
394 ## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
395 ## Returns: 0 iff vserver is running
396 function getVserverStatus
398 test -r "$1"/run || return 1
404 test "$3" || return 0
405 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$_ctx" | $_WC -l )
409 if test "$_tmp" = 0; then
410 local runfile=$($_READLINK "$1/run")
411 test -z "$4" || rm -f "$runfile"
418 ## Usage: isCtxRunning <ctx>
419 function isCtxRunning
421 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
425 ## Usage: isVserverRunning <vdir> [<ctx-varname>]
426 function isVserverRunning
430 getVserverStatus "$1" ctx procnum 1 || return 1
431 test $procnum != 0 || return 1
432 test -z "$2" || eval "$2"=\$ctx
436 ## Called as 'getFileValue <varname> <filename>'
437 function getFileValue
439 test -r "$2" || return 0
443 ## Called as 'getFileArray <varname> <filename>'
444 function getFileArray
446 test -r "$2" || return 1
448 local IFS=$_VS_NEWLINE
449 eval "$1"='( $(< "$2") )'
452 function checkComponents
463 core) test -x "$_CHBIND" || failed=1;;
464 build) test -x "$_VSERVER_BUILD" || failed=1;;
465 sysv) test -x "$INITRDDIR/vserver" || failed=1;;
466 devel) test -d "$INCLUDEDIR/vserver.h" || failed=1;;
467 *) echo "Unknown component '$i'" >&2
472 test -z "$failed" || {
481 ## Usage: isKernelAPI <ver> [<cmp-modifier>]
484 local api=$($_VSERVER_INFO - APIVER) || api=0
485 test $[ $api ] -${2:-ge} $[ $1 ]
488 ## Usage: callInNamespace <vserver> <command> <args>*
489 function callInNamespace
493 isAvoidNamespace "$1" || \
494 ctx=$( $_VSERVER_INFO "$1" CONTEXT f ) || ctx=
498 $_VNAMESPACE --enter "$ctx" -- "$@"
504 ## Usage: setDefaultTTY <vdir> [<fallback-tty>]
505 function setDefaultTTY
509 cfgdir=$($_VSERVER_INFO "$1" APPDIR init) || cfgdir=
510 findObject -e ttyname \
511 ${cfgdir:+"$cfgdir"/tty} \
512 "$CONFDIR/.defaults/apps/init/tty" \
519 ## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
520 function pkgmgmt.guessStyle()
522 local vdir=$($_VSERVER_INFO "$1" VDIR) || {
523 echo $"Can not determine vserver-root" >&2
526 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
528 if test "$cfgdir" -a -e "$cfgdir"/style; then
529 read style <"$cfgdir"/style
530 elif test -e "$vdir"/etc/redhat-release -o -e "$vdir"/etc/fedora-release; then
532 elif test -e "$vdir"/etc/mandrake-release; then
534 elif test -e "$vdir"/etc/debian_version; then
536 elif test -e "$vdir"/etc/SuSE-release; then
539 echo $"Can not determine packagemanagement style" >&2
547 ## Usage: pkgmgmt.isInternal <vserver>
548 ## returns true iff <vserver> is configured for internal packagemanagement
549 ## A typical application is
551 ## | pkgmgmt.isInternal "$vserver" || is_external=1
552 function pkgmgmt.isInternal
554 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
556 test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
559 ## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
560 function pkgmgmt.isAptAvailable
564 local is_internal="$3"
567 if test "$is_internal"; then
569 test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
572 for i in /bin /usr/bin /usr/local/bin; do
573 test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
577 test "$have_apt" && return 0 || return 1
580 function vshelper.doSanityCheck
582 local vshelper this_xid i
583 declare -a warnings=()
584 local solution_disable=
585 local solution_sysctl=
587 vshelper.isEnabled && vshelper.isEnabled warning || return 0
589 this_xid=$($_VSERVER_INFO - XID) ||
590 panic $"Failed to determine current context; aborting..."
592 ## Do nothing in other xid's; the helper will be executed in xid 0 only
593 test "$this_xid" = 0 || return 0
595 local proc_file=/proc/sys/kernel/vshelper
597 if ! test -r "$proc_file"; then
599 warnings=( "${warnings[@]}"
600 $"File '$proc_file' does not exists but is required for vshelper setup" )
603 vshelper=$(cat "$proc_file")
605 cmp -s "$vshelper" "$_VSHELPER" || {
606 warnings=( "${warnings[@]}"
607 $"The configured vshelper '$vshelper' does not match the 'vshelper'
608 script of the util-vserver package"
615 test -d "$VSHELPERSTATEDIR" || {
616 warnings=( "${warnings[@]}"
618 The vshelper state-directory '$VSHELPERSTATEDIR' does not exist; since
619 it is created by 'make install', this indicates a serious problem with
620 your util-vserver installation" )
624 test "${#warnings[@]}" -eq 0 || {
626 The following problem(s) were encountered while verifying vshelper
629 for i in "${warnings[@]}"; do
635 To fix this, you can:"
637 test -z "$solution_disable" || warning $"\
638 * disable vshelper entirely by executing
639 | touch \"$CONFDIR/.defaults/apps/vshelper/disabled\"
640 * disable only this message by executing
641 | touch \"$CONFDIR/.defaults/apps/vshelper/warning-disabled\""
643 test -x "$solution_sysctl" || warning $"\
644 * configure the util-vserver vshelper script, e.g. by adding
645 | kernel.vshelper = \"$_VSHELPER\"
646 to /etc/sysctl.conf and rebooting the machine, or by executing
647 | echo \"$_VSHELPER\" >$proc_file"
657 ## Usage: vshelper.isEnabled [<style>] [<vserver>]
658 function vshelper.isEnabled
660 local f=${1:+$1-}disabled
661 test ! -e "$CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
662 $_VSERVER_INFO - FEATURE vshelper || return 1
664 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
665 test -z "$2" -o ! -e "$appdir/$f" || return 1
671 function vshelper._getHandlerInternal
676 shift ## HACK: see below the note about the 'set -u' mode
678 while test "$#" -ge 2; do
683 test "$mod" "$obj" || continue
692 (*) panic $"Internal error, unexpected modifier '$mod'"
700 ## Usage: vshelper.getHandler <result-var> <vserver> <action>
701 function vshelper.getHandler
703 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || appdir=
705 declare -a search_list=( X )
706 ## HACK: when we are in 'set -u' mode, empty lists are causing errors
708 test -z "$appdir" || search_list=( "${search_list[@]}" -x "$appdir/$3" )
709 test -z "$appdir" || search_list=( "${search_list[@]}" -e "$appdir/action" )
710 search_list=( "${search_list[@]}" -x "$CONFDIR"/.defaults/apps/vshelper/"$3" )
711 search_list=( "${search_list[@]}" -e "$CONFDIR"/.defaults/apps/vshelper/action )
713 ! vshelper._getHandlerInternal "$1" "${search_list[@]}" || return 0
717 ## Usage: vshelper.init <vserver> [<method> <args>*]
718 function vshelper.doInit
720 vshelper.isEnabled || return 0
722 local xid=$($_VSERVER_INFO "$1" CONTEXT false) && test "$xid" || {
723 warning $"vshelper.init: can not determine xid of vserver '$vserver'; returned value was '$xid'"
727 local f="$VSHELPERSTATEDIR/$xid"
747 ## Usage: vshelper.doDestroy <vserver> <xid>
748 function vshelper.doDestroy
750 vshelper.isEnabled || return 0
752 rm -f "$VSHELPERSTATEDIR/$2"
755 ## Usage: vshelper.initSync <vserver> <pipe-varname>
756 function vshelper.initSync
758 local tmpdir=$(mktemp -d /tmp/vserver-stop.XXXXXX) || {
759 warning $"Failed to generate temporary directory for vshelper sync"
763 local fifo="$tmpdir"/pipe
765 vshelper.doInit "$1" sync "$fifo"
769 ## Usage: vshelper.getSyncTimeout <vserver> <varname>
770 function vshelper.getSyncTimeout
772 local appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || appdir=
775 findFile file ${appdir:+"$appdir"/sync-timeout} "$CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
776 test "$file" || return 1