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)
131 $_LOCKFILE "$1" $tmp $2 &
132 $tmp 2>/dev/null || return 1
134 _VS_LOCKS="$! $_VS_LOCKS"
137 ## Usage: unlock [<num>]
144 while test "$#" -gt 0; do
145 kill -HUP "$1" >/dev/null || :
147 test "$num" != 1 || break
148 test -z "$num" || let --num
153 function _pkgMountBindDir()
155 test "$1" != "$2" || return 0
157 mount -n --bind "$1" "$2"
160 function _pkgSetVarsBase
164 if test -d "$vserver/vdir"; then
166 VDIR=$(getPhysicalDir "$vserver/vdir")
168 PKGDIR=$BASEDIR/apps/pkgmgmt
169 test -d "$PKGDIR" || {
170 echo "Can not find configuration-directory for package-managment tools"
173 findDir EXECDIR $PKGDIR/execdir /
175 VDIR=$(getPhysicalDir "$vserver")
180 BASEDIR=$CONFDIR/$vserver
181 test -d "$BASEDIR" || {
182 echo "Can not find configuration-directory"
187 test -d "$VDIR" || VDIR=$DEFAULT_VSERVERDIR/$vserver
188 VDIR=$(getPhysicalDir "$VDIR")
190 PKGDIR=$BASEDIR/apps/pkgmgmt
191 test -d "$PKGDIR" || {
192 echo "Can not find configuration-directory for package-managment tools"
196 findDir EXECDIR $PKGDIR/execdir /
201 if test -z "$WORKAROUND_106057"; then
204 _rpmdb_mntpoint=/.rpmdb
208 function _pkgSetVarsRPM
210 if test "$PKGDIR"; then
211 findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
212 findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
214 findDir RPMLIBDIR $PKGDIR/rpmlib /
217 findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
218 findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
222 RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
223 RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
226 function _pkgSetVarsApt
228 if test "$PKGDIR"; then
229 findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
230 findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
231 findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
232 findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
234 findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
235 findDir APTSTATEDIR "$VDIR"/var/state/apt
236 findDir APTCACHEDIR "$VDIR"/var/cache/apt
237 findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
240 findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
241 test -z "$APT_CONFIG" || export APT_CONFIG
244 function _pkgMountBase
249 function _pkgMountApt
254 function _pkgMountRPM
256 _pkgMountBindDir "$RPMETCDIR" /etc/rpm
257 test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
259 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
260 test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
262 test -e "$VDIR"/proc/self/status || \
263 "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure -t proc none /proc
266 function _pkgSetEnvBase
268 test "$EXECDIR" = "/" || {
270 LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
273 export PATH LD_LIBRARY_PATH
276 function _pkgSetEnvApt
281 function _pkgSetEnvRPM
284 RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
285 RPM_BINARY=$_VRPM_PRELOAD
287 export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
299 rpm) _pkgSetVarsRPM;;
300 apt) _pkgSetVarsApt;;
301 *) echo "Unknown packaging flavor" >&2; exit 1;;
322 _PKG_VSERVER=$vserver
325 function isAvoidNamespace
329 $_VSERVER_INFO - FEATURE namespace || return 0
330 cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
331 test ! -e "$cfgdir"/namespace || return 1
332 test -e "$CONFDIR"/.defaults/nonamespace -o \
333 -e "$cfgdir"/nonamespace
336 function getAllVservers
341 for i in $CONFDIR/*; do
342 test -d "$i" || continue
343 test ! -e "$i"/disabled || continue
344 test -d "$i"/vdir || continue
349 _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}")
352 eval $1='( "${_tmp[@]}" )'
355 ## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
356 ## Returns: 0 iff vserver is running
357 function getVserverStatus
359 test -r "$1"/run || return 1
365 test "$3" || return 0
366 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$_ctx" | $_WC -l )
370 if test "$_tmp" = 0; then
371 local runfile=$($_READLINK "$1/run")
372 test -z "$4" || rm -f "$runfile"
379 ## Usage: isCtxRunning <ctx>
380 function isCtxRunning
382 local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
386 ## Usage: isVserverRunning <vdir> [<ctx-varname>]
387 function isVserverRunning
391 getVserverStatus "$1" ctx procnum 1 || return 1
392 test $procnum != 0 || return 1
393 test -z "$2" || eval "$2"=\$ctx
397 ## Called as 'getFileValue <varname> <filename>'
398 function getFileValue
400 test -r "$2" || return 0
404 ## Called as 'getFileArray <varname> <filename>'
405 function getFileArray
407 test -r "$2" || return 1
409 local IFS=$_VS_NEWLINE
410 eval "$1"='( $(< "$2") )'
413 function checkComponents
424 core) test -x "$_CHBIND" || failed=1;;
425 build) test -x "$_VSERVER_BUILD" || failed=1;;
426 sysv) test -x "$INITRDDIR/vserver" || failed=1;;
427 devel) test -d "$INCLUDEDIR/vserver.h" || failed=1;;
428 *) echo "Unknown component '$i'" >&2
433 test -z "$failed" || {
442 ## Usage: isKernelAPI <ver> [<cmp-modifier>]
445 local api=$($_VSERVER_INFO - APIVER) || api=0
446 test $[ $api ] -${2:-ge} $[ $1 ]
449 ## Usage: callInNamespace <vserver> <command> <args>*
450 function callInNamespace
454 isAvoidNamespace "$1" || \
455 ctx=$( $_VSERVER_INFO "$1" CONTEXT t ) || ctx=
459 $_VNAMESPACE --enter "$ctx" -- "$@"
465 ## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
466 function pkgmgmt.guessStyle()
468 local vdir=$($_VSERVER_INFO "$1" VDIR) || {
469 echo $"Can not determine vserver-root" >&2
472 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
474 if test "$cfgdir" -a -e "$cfgdir"/style; then
475 read style <"$cfgdir"/style
476 elif test -e "$vdir"/etc/redhat-release -o -e "$vdir"/etc/fedora-release; then
478 elif test -e "$vdir"/etc/mandrake-release; then
480 elif test -e "$vdir"/etc/debian_version; then
482 elif test -e "$vdir"/etc/SuSE-release; then
485 echo $"Can not determine packagemanagement style" >&2
493 ## Usage: pkgmgmt.isInternal <vserver>
494 ## returns true iff <vserver> is configured for internal packagemanagement
495 ## A typical application is
497 ## | pkgmgmt.isInternal "$vserver" || is_external=1
498 function pkgmgmt.isInternal
500 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
502 test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
505 ## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
506 function pkgmgmt.isAptAvailable
510 local is_internal="$3"
513 if test "$is_internal"; then
515 test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
518 for i in /bin /usr/bin /usr/local/bin; do
519 test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
523 test "$have_apt" && return 0 || return 1
526 function vshelper.doSanityCheck
528 local vshelper this_xid i
529 declare -a warnings=()
530 local solution_disable=
531 local solution_sysctl=
533 vshelper.isEnabled && vshelper.isEnabled warning || return 0
535 this_xid=$($_VSERVER_INFO - XID) ||
536 panic $"Failed to determine current context; aborting..."
538 ## Do nothing in other xid's; the helper will be executed in xid 0 only
539 test "$this_xid" = 0 || return 0
541 local proc_file=/proc/sys/kernel/vshelper
543 if ! test -r "$proc_file"; then
545 warnings=( "${warnings[@]}"
546 $"File '$proc_file' does not exists but is required for vshelper setup" )
549 vshelper=$(cat "$proc_file")
551 cmp -s "$vshelper" "$_VSHELPER" || {
552 warnings=( "${warnings[@]}"
553 $"The configured vshelper '$vshelper' does not match the 'vshelper'
554 script of the util-vserver package"
561 test -d "$VSHELPERSTATEDIR" || {
562 warnings=( "${warnings[@]}"
564 The vshelper state-directory '$VSHELPERSTATEDIR' does not exist; since
565 it is created by 'make install', this indicates a serious problem with
566 your util-vserver installation" )
570 test "${#warnings[@]}" -eq 0 || {
572 The following problem(s) were encountered while verifying vshelper
575 for i in "${warnings[@]}"; do
581 To fix this, you can:"
583 test -z "$solution_disable" || warning $"\
584 * disable vshelper entirely by executing
585 | touch \"$CONFDIR/.defaults/apps/vshelper/disabled\"
586 * disable only this message by executing
587 | touch \"$CONFDIR/.defaults/apps/vshelper/warning-disabled\""
589 test -x "$solution_sysctl" || warning $"\
590 * configure the util-vserver vshelper script, e.g. by adding
591 | kernel.vshelper = \"$_VSHELPER\"
592 to /etc/sysctl.conf and rebooting the machine, or by executing
593 | echo \"$_VSHELPER\" >$proc_file"
603 ## Usage: vshelper.isEnabled [<style>] [<vserver>]
604 function vshelper.isEnabled
606 local f=${1:+$1-}disabled
607 test ! -e "$CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
608 $_VSERVER_INFO - FEATURE vshelper || return 1
610 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
611 test -z "$2" -o ! -e "$appdir/$f" || return 1
617 function vshelper._getHandlerInternal
622 shift ## HACK: see below the note about the 'set -u' mode
624 while test "$#" -ge 2; do
629 test "$mod" "$obj" || continue
638 (*) panic $"Internal error, unexpected modifier '$mod'"
646 ## Usage: vshelper.getHandler <result-var> <vserver> <action>
647 function vshelper.getHandler
649 local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || appdir=
651 declare -a search_list=( X )
652 ## HACK: when we are in 'set -u' mode, empty lists are causing errors
654 test -z "$appdir" || search_list=( "${search_list[@]}" -x "$appdir/$3" )
655 test -z "$appdir" || search_list=( "${search_list[@]}" -e "$appdir/action" )
656 search_list=( "${search_list[@]}" -x "$CONFDIR"/.defaults/apps/vshelper/"$3" )
657 search_list=( "${search_list[@]}" -e "$CONFDIR"/.defaults/apps/vshelper/action )
659 ! vshelper._getHandlerInternal "$1" "${search_list[@]}" || return 0
663 ## Usage: vshelper.init <vserver> [<method> <args>*]
664 function vshelper.doInit
666 vshelper.isEnabled || return 0
668 local xid=$($_VSERVER_INFO "$1" CONTEXT false) && test "$xid" || {
669 warning $"vshelper.init: can not determine xid of vserver '$vserver'; returned value was '$xid'"
673 local f="$VSHELPERSTATEDIR/$xid"
693 ## Usage: vshelper.doDestroy <vserver> <xid>
694 function vshelper.doDestroy
696 vshelper.isEnabled || return 0
698 rm -f "$VSHELPERSTATEDIR/$2"
701 ## Usage: vshelper.initSync <vserver> <pipe-varname>
702 function vshelper.initSync
704 local tmpdir=$(mktemp -d /tmp/vserver-stop.XXXXXX) || {
705 warning $"Failed to generate temporary directory for vshelper sync"
709 local fifo="$tmpdir"/pipe
711 vshelper.doInit "$VSERVER_DIR" sync "$fifo"
715 ## Usage: vshelper.getSyncTimeout <vserver> <varname>
716 function vshelper.getSyncTimeout
718 local appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || appdir=
721 findFile file ${appdir:+"$appdir"/sync-timeout} "$CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
722 test "$file" || return 1