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 "$1" && pwd )
76 if test "$_VS_LOGFILE"; then
77 echo "$@" >>"$_VS_LOGFILE"
85 if test "$_VS_ERRFILE"; then
86 echo "$@" >>"$_VS_ERRFILE"
94 if test "$_VS_ERRFILE"; then
95 echo "$@" >>"$_VS_ERRFILE"
105 test -z "${DEBUG_EXEC:-}" || echo "$@"
106 test "${DEBUG_EXEC:-}" = noexec || exec "$@"
110 ## Usage: isNumber <arg>
114 let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a "$1" || return 1
119 ## Usage: lock <lockfile> [<timeout>]
122 local tmp=$(mktemp /tmp/vserver-lock.XXXXXX)
127 $_LOCKFILE "$1" $tmp $2 &
130 _UV_LOCKS="$! $_UV_LOCKS"
133 ## Usage: unlock [<num>]
140 while test "$#" -gt 0; do
141 kill -HUP "$1" >/dev/null || :
143 test "$num" != 1 || break
144 test -z "$num" || let --num
149 function _pkgMountBindDir()
151 test "$1" != "$2" || return 0
153 mount -n --bind "$1" "$2"
156 function _pkgSetVarsBase
160 if test -d "$vserver/vdir"; then
162 VDIR=$(getPhysicalDir "$vserver/vdir")
164 PKGDIR=$BASEDIR/apps/pkgmgmt
165 test -d "$PKGDIR" || {
166 echo "Can not find configuration-directory for package-managment tools"
169 findDir EXECDIR $PKGDIR/execdir /
171 VDIR=$(getPhysicalDir "$vserver")
176 BASEDIR=$CONFDIR/$vserver
177 test -d "$BASEDIR" || {
178 echo "Can not find configuration-directory"
183 test -d "$VDIR" || VDIR=$DEFAULT_VSERVERDIR/$vserver
184 VDIR=$(getPhysicalDir "$VDIR")
186 PKGDIR=$BASEDIR/apps/pkgmgmt
187 test -d "$PKGDIR" || {
188 echo "Can not find configuration-directory for package-managment tools"
192 findDir EXECDIR $PKGDIR/execdir /
197 if test -z "$WORKAROUND_106057"; then
200 _rpmdb_mntpoint=/.rpmdb
204 function _pkgSetVarsRPM
206 if test "$PKGDIR"; then
207 findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
208 findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
210 findDir RPMLIBDIR $PKGDIR/rpmlib /
213 findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
214 findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
218 RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
219 RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
222 function _pkgSetVarsApt
224 if test "$PKGDIR"; then
225 findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
226 findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
227 findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
228 findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
230 findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
231 findDir APTSTATEDIR "$VDIR"/var/state/apt
232 findDir APTCACHEDIR "$VDIR"/var/cache/apt
233 findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
236 findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
237 test -z "$APT_CONFIG" || export APT_CONFIG
240 function _pkgMountBase
245 function _pkgMountApt
250 function _pkgMountRPM
252 _pkgMountBindDir "$RPMETCDIR" /etc/rpm
253 test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
255 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
256 test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
258 test -e "$VDIR"/proc/self/status || \
259 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure -t proc none /proc
262 function _pkgSetEnvBase
264 test "$EXECDIR" = "/" || {
266 LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
269 export PATH LD_LIBRARY_PATH
272 function _pkgSetEnvApt
277 function _pkgSetEnvRPM
280 RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
281 RPM_BINARY=$_VRPM_PRELOAD
283 export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
295 rpm) _pkgSetVarsRPM;;
296 apt) _pkgSetVarsApt;;
297 *) echo "Unknown packaging flavor" >&2; exit 1;;
318 _PKG_VSERVER=$vserver
321 function isAvoidNamespace
325 $_VSERVER_INFO - FEATURE namespace || return 0
326 cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
327 test ! -e "$cfgdir"/namespace || return 1
328 test -e "$CONFDIR"/.defaults/nonamespace -o \
329 -e "$cfgdir"/nonamespace
332 function getAllVservers
337 for i in $CONFDIR/*; do
338 test -d "$i" || continue
339 test ! -e "$i"/disabled || continue
340 test -d "$i"/vdir || continue
345 _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}")
348 eval $1='( "${_tmp[@]}" )'
351 ## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
352 ## Returns: 0 iff vserver is running
353 function getVserverStatus
355 test -r "$1"/run || return 1
361 test "$3" || return 0
362 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$_ctx" | $_WC -l )
366 if test "$_tmp" = 0; then
367 local runfile=$($_READLINK "$1/run")
368 test -z "$4" || rm -f "$runfile"
375 ## Usage: isCtxRunning <ctx>
376 function isCtxRunning
378 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
382 ## Usage: isVserverRunning <vdir> [<ctx-varname>]
383 function isVserverRunning
387 getVserverStatus "$1" ctx procnum 1 || return 1
388 test $procnum != 0 || return 1
389 test -z "$2" || eval "$2"=\$ctx
393 ## Called as 'getFileValue <varname> <filename>'
394 function getFileValue
396 test -r "$2" || return 0
400 ## Called as 'getFileArray <varname> <filename>'
401 function getFileArray
403 test -r "$2" || return 1
405 local IFS=$_VS_NEWLINE
406 eval "$1"='( $(< "$2") )'
409 function checkComponents
420 core) test -x "$_CHBIND" || failed=1;;
421 build) test -x "$_VSERVER_BUILD" || failed=1;;
422 sysv) test -x "$INITRDDIR/vserver" || failed=1;;
423 devel) test -d "$INCLUDEDIR/vserver.h" || failed=1;;
424 *) echo "Unknown component '$i'" >&2
429 test -z "$failed" || {
438 ## Usage: isKernelAPI <ver> [<cmp-modifier>]
441 local api=$($_VSERVER_INFO - APIVER) || api=0
442 test $[ $api ] -${2:-ge} $[ $1 ]
445 ## Usage: callInNamespace <vserver> <command> <args>*
446 function callInNamespace
450 isAvoidNamespace "$1" || \
451 ctx=$( $_VSERVER_INFO "$1" CONTEXT t ) || ctx=
455 $_VNAMESPACE --enter "$ctx" -- "$@"
461 ## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
462 function pkgmgmt.guessStyle()
464 local vdir=$($_VSERVER_INFO "$1" VDIR) || {
465 echo $"Can not determine vserver-root" >&2
468 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
470 if test "$cfgdir" -a -e "$cfgdir"/style; then
471 read style <"$cfgdir"/style
472 elif test -e "$vdir"/etc/redhat-release -o -e "$vdir"/etc/fedora-release; then
474 elif test -e "$vdir"/etc/mandrake-release; then
476 elif test -e "$vdir"/etc/debian_version; then
478 elif test -e "$vdir"/etc/SuSE-release; then
481 echo $"Can not determine packagemanagement style" >&2
489 ## Usage: pkgmgmt.isInternal <vserver>
490 ## returns true iff <vserver> is configured for internal packagemanagement
491 ## A typical application is
493 ## | pkgmgmt.isInternal "$vserver" || is_external=1
494 function pkgmgmt.isInternal
496 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
498 test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
501 ## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
502 function pkgmgmt.isAptAvailable
506 local is_internal="$3"
509 if test "$is_internal"; then
511 test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
514 for i in /bin /usr/bin /usr/local/bin; do
515 test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
519 test "$have_apt" && return 0 || return 1
522 function vshelper.doSanityCheck
524 local vshelper this_xid i
525 declare -a warnings=()
526 local solution_disable=
527 local solution_sysctl=
529 vshelper.isEnabled && vshelper.isEnabled warning || return 0
531 this_xid=$($_VSERVER_INFO - XID) ||
532 panic $"Failed to determine current context; aborting..."
534 ## Do nothing in other xid's; the helper will be executed in xid 0 only
535 test "$this_xid" = 0 || return 0
537 local proc_file=/proc/sys/kernel/vshelper
539 if ! test -r "$proc_file"; then
541 warnings=( "${warnings[@]}"
542 $"File '$proc_file' does not exists but is required for vshelper setup" )
545 vshelper=$(cat "$proc_file")
547 cmp -s "$vshelper" "$_VSHELPER" || {
548 warnings=( "${warnings[@]}"
549 $"The configured vshelper '$vshelper' does not match the 'vshelper'
550 script of the util-vserver package"
557 test -d "$VSHELPERSTATEDIR" || {
558 warnings=( "${warnings[@]}"
560 The vshelper state-directory '$VSHELPERSTATEDIR' does not exist;
561 since it is created by 'make install', this indicates a serious
562 problem with your util-vserver installation" )
566 test "${#warnings[@]}" -eq 0 || {
568 The following problem(s) were encountered while verifying vshelper
571 for i in "${warnings[@]}"; do
577 To fix this, you can:"
579 test -z "$solution_disable" || warning $"\
580 * disable vshelper entirely by executing
581 | touch \"$CONFDIR/.defaults/apps/vshelper/disabled\"
582 * disable only this message by executing
583 | touch \"$CONFDIR/.defaults/apps/vshelper/warning-disabled\""
585 test -x "$solution_sysctl" || warning $"\
586 * configure the util-vserver vshelper script, e.g. by adding
587 | kernel.vshelper = \"$_VSHELPER\"
588 to /etc/sysctl.conf and rebooting the machine, or by executing
589 | echo \"$_VSHELPER\" >$proc_file"
599 ## Usage: vshelper.isEnabled [<style>] [<vserver>]
600 function vshelper.isEnabled
602 local f=${1:+$1-}disabled
603 test ! -e "$CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
604 $_VSERVER_INFO - FEATURE vshelper || return 1
606 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
607 test -z "$2" -o ! -e "$appdir/$f" || return 1
613 function vshelper._getHandlerInternal
618 shift ## HACK: see below the note about the 'set -u' mode
620 while test "$#" -ge 2; do
625 test "$mod" "$obj" || continue
634 (*) panic $"Internal error, unexpected modifier '$mod'"
642 ## Usage: vshelper.getHandler <result-var> <vserver> <action>
643 function vshelper.getHandler
645 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || appdir=
647 declare -a search_list=( X )
648 ## HACK: when we are in 'set -u' mode, empty lists are causing errors
650 test -z "$appdir" || search_list=( "${search_list[@]}" -x "$appdir/$3" )
651 test -z "$appdir" || search_list=( "${search_list[@]}" -e "$appdir/action" )
652 search_list=( "${search_list[@]}" -x "$CONFDIR"/.defaults/apps/vshelper/"$3" )
653 search_list=( "${search_list[@]}" -e "$CONFDIR"/.defaults/apps/vshelper/action )
655 ! vshelper._getHandlerInternal "$1" "${search_list[@]}" || return 0
659 ## Usage: vshelper.init <vserver> [<method> <args>*]
660 function vshelper.doInit
662 vshelper.isEnabled || return 0
664 local xid=$($_VSERVER_INFO "$1" CONTEXT false) || {
665 warning $"vshelper.init: can not determine xid of vserver '$vserver'"
669 local f="$VSHELPERSTATEDIR/$xid"
689 ## Usage: vshelper.doDestroy <vserver> <xid>
690 function vshelper.doDestroy
692 vshelper.isEnabled || return 0
694 rm -f "$VSHELPERSTATEDIR/$2"
697 ## Usage: vshelper.initSync <vserver> <pipe-varname>
698 function vshelper.initSync
700 local tmpdir=$(mktemp -d /tmp/vserver-stop.XXXXXX) || {
701 warning $"Failed to generate temporary directory for vshelper sync"
705 local fifo="$tmpdir"/pipe
707 vshelper.doInit "$VSERVER_DIR" sync "$fifo"
711 ## Usage: vshelper.getSyncTimeout <vserver> <varname>
712 function vshelper.getSyncTimeout
714 local appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || appdir=
717 findFile file ${appdir:+"$appdir"/sync-timeout} "$CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
718 test "$file" || return 1