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 "$1" || return 1
123 ## Usage: lock <lockfile> [<timeout>]
126 local tmp=$(mktemp /tmp/vserver-lock.XXXXXX)
130 $_LOCKFILE "$1" $tmp $2 &
131 grep -q true $tmp 2>/dev/null || return 1
133 _VS_LOCKS="$! $_VS_LOCKS"
136 ## Usage: unlock [<num>]
143 while test "$#" -gt 0; do
144 kill -HUP "$1" >/dev/null || :
146 test "$num" != 1 || break
147 test -z "$num" || let --num
152 function _pkgMountBindDir()
154 test "$1" != "$2" || return 0
156 mount -n --bind "$1" "$2"
159 function _pkgSetVarsBase
163 if test -d "$vserver/vdir"; then
165 VDIR=$(getPhysicalDir "$vserver/vdir")
167 PKGDIR=$BASEDIR/apps/pkgmgmt
168 test -d "$PKGDIR" || {
169 echo "Can not find configuration-directory for package-managment tools"
172 findDir EXECDIR $PKGDIR/execdir /
174 VDIR=$(getPhysicalDir "$vserver")
179 BASEDIR=$CONFDIR/$vserver
180 test -d "$BASEDIR" || {
181 echo "Can not find configuration-directory"
186 test -d "$VDIR" || VDIR=$DEFAULT_VSERVERDIR/$vserver
187 VDIR=$(getPhysicalDir "$VDIR")
189 PKGDIR=$BASEDIR/apps/pkgmgmt
190 test -d "$PKGDIR" || {
191 echo "Can not find configuration-directory for package-managment tools"
195 findDir EXECDIR $PKGDIR/execdir /
200 if test -z "$WORKAROUND_106057"; then
203 _rpmdb_mntpoint=/.rpmdb
207 function _pkgSetVarsRPM
209 if test "$PKGDIR"; then
210 findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
211 findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
213 findDir RPMLIBDIR $PKGDIR/rpmlib /
216 findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
217 findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
221 RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
222 RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
225 function _pkgSetVarsApt
227 if test "$PKGDIR"; then
228 findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
229 findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
230 findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
231 findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
233 findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
234 findDir APTSTATEDIR "$VDIR"/var/state/apt
235 findDir APTCACHEDIR "$VDIR"/var/cache/apt
236 findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
239 findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
240 test -z "$APT_CONFIG" || export APT_CONFIG
243 function _pkgMountBase
248 function _pkgMountApt
253 function _pkgMountRPM
255 _pkgMountBindDir "$RPMETCDIR" /etc/rpm
256 test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
258 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
259 test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
261 test -e "$VDIR"/proc/self/status || \
262 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure -t proc none /proc
265 function _pkgSetEnvBase
267 test "$EXECDIR" = "/" || {
269 LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
272 export PATH LD_LIBRARY_PATH
275 function _pkgSetEnvApt
280 function _pkgSetEnvRPM
283 RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
284 RPM_BINARY=$_VRPM_PRELOAD
286 export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
298 rpm) _pkgSetVarsRPM;;
299 apt) _pkgSetVarsApt;;
300 *) echo "Unknown packaging flavor" >&2; exit 1;;
321 _PKG_VSERVER=$vserver
324 function isAvoidNamespace
328 $_VSERVER_INFO - FEATURE namespace || return 0
329 cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
330 test ! -e "$cfgdir"/namespace || return 1
331 test -e "$CONFDIR"/.defaults/nonamespace -o \
332 -e "$cfgdir"/nonamespace
335 function getAllVservers
340 for i in $CONFDIR/*; do
341 test -d "$i" || continue
342 test ! -e "$i"/disabled || continue
343 test -d "$i"/vdir || continue
348 _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}")
351 eval $1='( "${_tmp[@]}" )'
354 ## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
355 ## Returns: 0 iff vserver is running
356 function getVserverStatus
358 test -r "$1"/run || return 1
364 test "$3" || return 0
365 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$_ctx" | $_WC -l )
369 if test "$_tmp" = 0; then
370 local runfile=$($_READLINK "$1/run")
371 test -z "$4" || rm -f "$runfile"
378 ## Usage: isCtxRunning <ctx>
379 function isCtxRunning
381 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
385 ## Usage: isVserverRunning <vdir> [<ctx-varname>]
386 function isVserverRunning
390 getVserverStatus "$1" ctx procnum 1 || return 1
391 test $procnum != 0 || return 1
392 test -z "$2" || eval "$2"=\$ctx
396 ## Called as 'getFileValue <varname> <filename>'
397 function getFileValue
399 test -r "$2" || return 0
403 ## Called as 'getFileArray <varname> <filename>'
404 function getFileArray
406 test -r "$2" || return 1
408 local IFS=$_VS_NEWLINE
409 eval "$1"='( $(< "$2") )'
412 function checkComponents
423 core) test -x "$_CHBIND" || failed=1;;
424 build) test -x "$_VSERVER_BUILD" || failed=1;;
425 sysv) test -x "$INITRDDIR/vserver" || failed=1;;
426 devel) test -d "$INCLUDEDIR/vserver.h" || failed=1;;
427 *) echo "Unknown component '$i'" >&2
432 test -z "$failed" || {
441 ## Usage: isKernelAPI <ver> [<cmp-modifier>]
444 local api=$($_VSERVER_INFO - APIVER) || api=0
445 test $[ $api ] -${2:-ge} $[ $1 ]
448 ## Usage: callInNamespace <vserver> <command> <args>*
449 function callInNamespace
453 isAvoidNamespace "$1" || \
454 ctx=$( $_VSERVER_INFO "$1" CONTEXT f ) || ctx=
458 $_VNAMESPACE --enter "$ctx" -- "$@"
464 ## Usage: setDefaultTTY <vdir> [<fallback-tty>]
465 function setDefaultTTY
469 cfgdir=$($_VSERVER_INFO "$1" APPDIR init) || cfgdir=
470 findObject -e ttyname \
471 ${cfgdir:+"$cfgdir"/tty} \
472 "$CONFDIR/.defaults/apps/init/tty" \
480 ## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
481 function pkgmgmt.guessStyle()
483 local vdir=$($_VSERVER_INFO "$1" VDIR) || {
484 echo $"Can not determine vserver-root" >&2
487 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
489 if test "$cfgdir" -a -e "$cfgdir"/style; then
490 read style <"$cfgdir"/style
491 elif test -e "$vdir"/etc/redhat-release -o -e "$vdir"/etc/fedora-release; then
493 elif test -e "$vdir"/etc/mandrake-release; then
495 elif test -e "$vdir"/etc/debian_version; then
497 elif test -e "$vdir"/etc/SuSE-release; then
500 echo $"Can not determine packagemanagement style" >&2
508 ## Usage: pkgmgmt.isInternal <vserver>
509 ## returns true iff <vserver> is configured for internal packagemanagement
510 ## A typical application is
512 ## | pkgmgmt.isInternal "$vserver" || is_external=1
513 function pkgmgmt.isInternal
515 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
517 test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
520 ## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
521 function pkgmgmt.isAptAvailable
525 local is_internal="$3"
528 if test "$is_internal"; then
530 test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
533 for i in /bin /usr/bin /usr/local/bin; do
534 test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
538 test "$have_apt" && return 0 || return 1
541 function vshelper.doSanityCheck
543 local vshelper this_xid i
544 declare -a warnings=()
545 local solution_disable=
546 local solution_sysctl=
548 vshelper.isEnabled && vshelper.isEnabled warning || return 0
550 this_xid=$($_VSERVER_INFO - XID) ||
551 panic $"Failed to determine current context; aborting..."
553 ## Do nothing in other xid's; the helper will be executed in xid 0 only
554 test "$this_xid" = 0 || return 0
556 local proc_file=/proc/sys/kernel/vshelper
558 if ! test -r "$proc_file"; then
560 warnings=( "${warnings[@]}"
561 $"File '$proc_file' does not exists but is required for vshelper setup" )
564 vshelper=$(cat "$proc_file")
566 cmp -s "$vshelper" "$_VSHELPER" || {
567 warnings=( "${warnings[@]}"
568 $"The configured vshelper '$vshelper' does not match the 'vshelper'
569 script of the util-vserver package"
576 test -d "$VSHELPERSTATEDIR" || {
577 warnings=( "${warnings[@]}"
579 The vshelper state-directory '$VSHELPERSTATEDIR' does not exist; since
580 it is created by 'make install', this indicates a serious problem with
581 your util-vserver installation" )
585 test "${#warnings[@]}" -eq 0 || {
587 The following problem(s) were encountered while verifying vshelper
590 for i in "${warnings[@]}"; do
596 To fix this, you can:"
598 test -z "$solution_disable" || warning $"\
599 * disable vshelper entirely by executing
600 | touch \"$CONFDIR/.defaults/apps/vshelper/disabled\"
601 * disable only this message by executing
602 | touch \"$CONFDIR/.defaults/apps/vshelper/warning-disabled\""
604 test -x "$solution_sysctl" || warning $"\
605 * configure the util-vserver vshelper script, e.g. by adding
606 | kernel.vshelper = \"$_VSHELPER\"
607 to /etc/sysctl.conf and rebooting the machine, or by executing
608 | echo \"$_VSHELPER\" >$proc_file"
618 ## Usage: vshelper.isEnabled [<style>] [<vserver>]
619 function vshelper.isEnabled
621 local f=${1:+$1-}disabled
622 test ! -e "$CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
623 $_VSERVER_INFO - FEATURE vshelper || return 1
625 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
626 test -z "$2" -o ! -e "$appdir/$f" || return 1
632 function vshelper._getHandlerInternal
637 shift ## HACK: see below the note about the 'set -u' mode
639 while test "$#" -ge 2; do
644 test "$mod" "$obj" || continue
653 (*) panic $"Internal error, unexpected modifier '$mod'"
661 ## Usage: vshelper.getHandler <result-var> <vserver> <action>
662 function vshelper.getHandler
664 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || appdir=
666 declare -a search_list=( X )
667 ## HACK: when we are in 'set -u' mode, empty lists are causing errors
669 test -z "$appdir" || search_list=( "${search_list[@]}" -x "$appdir/$3" )
670 test -z "$appdir" || search_list=( "${search_list[@]}" -e "$appdir/action" )
671 search_list=( "${search_list[@]}" -x "$CONFDIR"/.defaults/apps/vshelper/"$3" )
672 search_list=( "${search_list[@]}" -e "$CONFDIR"/.defaults/apps/vshelper/action )
674 ! vshelper._getHandlerInternal "$1" "${search_list[@]}" || return 0
678 ## Usage: vshelper.init <vserver> [<method> <args>*]
679 function vshelper.doInit
681 vshelper.isEnabled || return 0
683 local xid=$($_VSERVER_INFO "$1" CONTEXT false) && test "$xid" || {
684 warning $"vshelper.init: can not determine xid of vserver '$vserver'; returned value was '$xid'"
688 local f="$VSHELPERSTATEDIR/$xid"
708 ## Usage: vshelper.doDestroy <vserver> <xid>
709 function vshelper.doDestroy
711 vshelper.isEnabled || return 0
713 rm -f "$VSHELPERSTATEDIR/$2"
716 ## Usage: vshelper.initSync <vserver> <pipe-varname>
717 function vshelper.initSync
719 local tmpdir=$(mktemp -d /tmp/vserver-stop.XXXXXX) || {
720 warning $"Failed to generate temporary directory for vshelper sync"
724 local fifo="$tmpdir"/pipe
726 vshelper.doInit "$VSERVER_DIR" sync "$fifo"
730 ## Usage: vshelper.getSyncTimeout <vserver> <varname>
731 function vshelper.getSyncTimeout
733 local appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || appdir=
736 findFile file ${appdir:+"$appdir"/sync-timeout} "$CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
737 test "$file" || return 1