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=${_VS_NEWLINE:0-1}
34 test -n "$_fo_i" || continue
35 test ! $_fo_mod "$_fo_i" || { _fo_file=$_fo_i; break; }
38 test -z "$_fo_i" -o -n "$_fo_file" || {
39 echo "Can not find file for '$_fo_var'; aborting"
43 eval "$_fo_var=\"$_fo_file\""
59 test ! -s "$dst" || return 0
65 test -n "$tmp" -a -s "$tmp" || return 0
66 $_CP -af "$tmp" "$dst"
69 function getPhysicalDir
71 ( set -P && cd "$1" && pwd )
74 ## Usage: logging <message>
77 if test -n "$_VS_LOGFILE"; then
78 echo "$@" >>"$_VS_LOGFILE"
84 ## Usage: warning <message>
87 if test -n "$_VS_ERRFILE"; then
88 echo "$@" >>"$_VS_ERRFILE"
94 ## Usage: panic <message>
97 if test -n "$_VS_ERRFILE"; then
98 echo "$@" >>"$_VS_ERRFILE"
106 ## Usage: execute <message>
109 test -z "${DEBUG_EXEC:-}" || echo "$@"
110 test "${DEBUG_EXEC:-}" = noexec || exec "$@"
115 ## Usage: spawn <message>
118 test -z "${DEBUG_EXEC:-}" || echo "$@"
119 test "${DEBUG_EXEC:-}" = noexec || "$@"
122 ## Usage: isNumber <arg>
126 let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a -n "$1" || return 1
130 ## Usage: colorize <style> <command>
140 findFile cfile "$__CONFDIR"/.defaults/styles/"$style" ''
141 if test -n "$cfile"; then
145 (bold) echo -ne "\e[1m";;
146 (emph) echo -ne "\e[34m";;
147 (info) echo -ne "\e[0;34m";;
148 (warn*) echo -ne "\e[1;31m";;
149 (error) echo -ne "\e[1;33;41m";;
159 ## Usage: xtermTitle <title>
163 echo -ne "\e]0;$@\007"
167 ## Usage: lock <lockfile> [<timeout>]
170 local tmp=$($_MKTEMP /tmp/vserver-lock.XXXXXX)
174 $_LOCKFILE "$1" $tmp $2 &
175 $_GREP -q true $tmp 2>/dev/null || return 1
177 _VS_LOCKS="$! $_VS_LOCKS"
180 ## Usage: unlock [<num>]
187 while test "$#" -gt 0; do
188 kill -HUP "$1" >/dev/null || :
190 test "$num" != 1 || break
191 test -z "$num" || let --num
196 function _pkgMountBindDir()
198 test "$1" != "$2" || return 0
200 $_MOUNT -n --bind "$1" "$2"
203 function _pkgSetVarsBase
207 if test -d "$vserver/vdir"; then
209 VDIR=$(getPhysicalDir "$vserver/vdir")
211 PKGDIR=$BASEDIR/apps/pkgmgmt
212 test -d "$PKGDIR" || {
213 echo "Can not find configuration-directory for package-managment tools"
216 findDir EXECDIR $PKGDIR/execdir /
218 VDIR=$(getPhysicalDir "$vserver")
223 BASEDIR=$__CONFDIR/$vserver
224 test -d "$BASEDIR" || {
225 echo "Can not find configuration-directory"
230 test -d "$VDIR" || VDIR=$__DEFAULT_VSERVERDIR/$vserver
231 VDIR=$(getPhysicalDir "$VDIR")
233 PKGDIR=$BASEDIR/apps/pkgmgmt
234 test -d "$PKGDIR" || {
235 echo "Can not find configuration-directory for package-managment tools"
239 findDir EXECDIR $PKGDIR/execdir /
244 if test -z "$WORKAROUND_106057"; then
247 _rpmdb_mntpoint=/.rpmdb
251 function _pkgSetVarsRPM
253 if test -n "$PKGDIR"; then
254 findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
255 findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
257 findDir RPMLIBDIR $PKGDIR/rpmlib /
260 findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
261 findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
265 RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
266 RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
269 function _pkgSetVarsApt
271 if test -n "$PKGDIR"; then
272 findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
273 findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
274 findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
275 findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
277 findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
278 findDir APTSTATEDIR "$VDIR"/var/state/apt
279 findDir APTCACHEDIR "$VDIR"/var/cache/apt
280 findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
283 findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
284 test -z "$APT_CONFIG" || export APT_CONFIG
287 function _pkgSetVarsYum
289 if test -n "$PKGDIR"; then
290 findDir YUMETCDIR $PKGDIR/yumetc $PKGDIR/base/yum/etc /etc
291 findDir YUMCACHEDIR $PKGDIR/yumcache $PKGDIR/base/yum/cache
293 findDir YUMETCDIR "$VDIR"/etc /etc
294 findDir YUMCACHEDIR "$VDIR"/var/cache/yum
299 function _pkgMountBase
304 function _pkgMountApt
309 function _pkgMountYum
314 function _pkgMountRPM
316 _pkgMountBindDir "$RPMETCDIR" /etc/rpm
317 test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
319 pushd "$VDIR" >/dev/null
321 $_SECURE_MOUNT --chroot -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
322 test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
324 test -e "$VDIR"/proc/self/status || \
325 $_SECURE_MOUNT --chroot -n -t proc none /proc
330 function _pkgSetEnvBase
332 test "$EXECDIR" = "/" || {
334 LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
337 export PATH LD_LIBRARY_PATH
340 function _pkgSetEnvApt
345 function _pkgSetEnvYum
350 function _pkgSetEnvRPM
353 RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
354 RPM_BINARY=$_VRPM_PRELOAD
356 export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
368 rpm) _pkgSetVarsRPM;;
369 apt) _pkgSetVarsApt;;
370 yum) _pkgSetVarsYum;;
371 *) echo "Unknown packaging flavor" >&2; exit 1;;
394 _PKG_VSERVER=$vserver
397 function isAvoidNamespace
401 $_VSERVER_INFO - FEATURE namespace || return 0
402 cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
403 test ! -e "$cfgdir"/namespace || return 1
404 test -e "$__CONFDIR"/.defaults/nonamespace -o \
405 -e "$cfgdir"/nonamespace
408 function getAllVservers
411 declare -a _ga_tmp=()
413 for _ga_i in $__CONFDIR/*; do
414 test -d "$_ga_i" || continue
415 test ! -e "$_ga_i"/disabled || continue
416 test -d "$_ga_i"/vdir || continue
421 _ga_tmp=( "${_ga_tmp[@]}" "${_ga_i##$__CONFDIR/}")
424 eval $1='( "${_ga_tmp[@]}" )'
427 ## Usage: _getProcNumberCount <ctx> <var>
428 function _getProcNumberCount
431 local _gp_procnr_cnt=0
433 # Use /proc/virtual from kernel 2.6 when possible
434 if test -d "/proc/virtual"; then
435 set -- $($_GREP '^PROC:' "/proc/virtual/$1/limit" 2>/dev/null)
438 _gp_procnr_cnt=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
441 let _gp_procnr_cnt=_gp_procnr_cnt+0
442 eval $_gp_var=\$_gp_procnr_cnt
445 ## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
446 ## Returns: 0 iff vserver is running
447 function getVserverStatus
449 test -r "$1"/run || return 1
452 read _gvs_ctx <"$1"/run
455 test -n "$3" || return 0
457 _getProcNumberCount "$_gvs_ctx" _gvs_tmp
460 if test "$_gvs_tmp" = 0; then
461 local runfile=$($_READLINK "$1/run")
462 test -z "$4" || $_RM -f "$runfile"
469 ## Usage: isCtxRunning <ctx>
470 function isCtxRunning
473 _getProcNumberCount "$1" _tmp
477 ## Usage: isVserverRunning <vdir> [<ctx-varname>]
478 function isVserverRunning
480 local _ivr_ctx _ivr_procnum
482 getVserverStatus "$1" _ivr_ctx _ivr_procnum 1 || return 1
483 test "$_ivr_procnum" != 0 || return 1
484 test -z "$2" || eval "$2"=\$_ivr_ctx
488 ## Called as 'getFileValue <varname> <filename>+'
489 function getFileValue
495 findFile _gfv_file "$@" ''
496 test -n "$_gfv_file" -a -r "$_gfv_file" || return 0
497 eval read "$_gfv_var" <"$_gfv_file"
500 ## Called as 'getFileArray <varname> <filename>'
501 function getFileArray
503 test -r "$2" || return 1
505 local IFS=$_VS_NEWLINE
506 eval "$1"='( $(< "$2") )'
509 function checkComponents
520 (core) test -x "$_CHBIND" || failed=1;;
521 (build) test -x "$_VSERVER_BUILD" || failed=1;;
522 (sysv) test -x "$__INITRDDIR/vserver" || failed=1;;
523 (devel) test -d "$__INCLUDEDIR/vserver.h" || failed=1;;
524 (*) echo "Unknown component '$i'" >&2
529 test -z "$failed" || {
538 ## Usage: isKernelAPI <ver> [<cmp-modifier>]
542 api=$($_VSERVER_INFO - APIVER) || api=0
543 test $[ $api ] -${2:-ge} $[ $1 ]
546 ## Usage: callInNamespace <vserver> <command> <args>*
547 function callInNamespace
551 isAvoidNamespace "$1" || \
552 ctx=$( $_VSERVER_INFO "$1" CONTEXT f ) || ctx=
555 if test -n "$ctx"; then
556 $_VNAMESPACE --enter "$ctx" -- "$@"
562 ## Usage: setDefaultTTY <vdir> [<fallback-tty>]
563 function setDefaultTTY
567 cfgdir=$($_VSERVER_INFO "$1" APPDIR init) || cfgdir=
568 findObject -e ttyname \
569 ${cfgdir:+"$cfgdir"/tty} \
570 "$__CONFDIR/.defaults/apps/init/tty" \
577 ## Usage: killContext <XID> [<SIG>]
580 $_VKILL -s "${2:-9}" --xid "$1" 1 &>/dev/null || :
581 $_VKILL -s "${2:-9}" --xid "$1" &>/dev/null || :
584 ## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
585 function pkgmgmt.guessStyle()
588 _pgs_vdir=$($_VSERVER_INFO "$1" VDIR) || {
589 echo $"Can not determine vserver-root" >&2
592 local _pgs_cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
594 if test -n "$_pgs_cfgdir" -a -e "$_pgs_cfgdir"/style; then
595 read style <"$_pgs_cfgdir"/style
596 elif test -e "$_pgs_vdir"/etc/redhat-release -o -e "$_pgs_vdir"/etc/fedora-release; then
598 elif test -e "$_pgs_vdir"/etc/mandrake-release; then
600 elif test -e "$_pgs_vdir"/etc/debian_version; then
602 elif test -e "$_pgs_vdir"/etc/SuSE-release; then
605 echo $"Can not determine packagemanagement style" >&2
613 ## Usage: pkgmgmt.isInternal <vserver>
614 ## returns true iff <vserver> is configured for internal packagemanagement
615 ## A typical application is
617 ## | pkgmgmt.isInternal "$vserver" || is_external=1
618 function pkgmgmt.isInternal
620 local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
622 test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
625 ## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
626 function pkgmgmt.isAptAvailable
630 local is_internal="$3"
633 if test -n "$is_internal"; then
635 test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
638 for i in /bin /usr/bin /usr/local/bin; do
639 test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
643 test -n "$have_apt" && return 0 || return 1
646 ## Usage: pkgmgmt.isYumAvailable <cfgdir> <vdir> [<is-internal>]
647 function pkgmgmt.isYumAvailable
651 local is_internal="$3"
654 if test -n "$is_internal"; then
656 test -d "$cfgdir"/base/yum -o -d "$cfgdir"/yumetc || have_yum=
659 for i in /bin /usr/bin /usr/local/bin; do
660 test ! -x "$vdir$i"/yum || { have_yum=1; break; }
664 test -n "$have_yum" && return 0 || return 1
668 function vshelper.doSanityCheck
670 local vshelper this_xid i
671 declare -a warnings=()
672 local solution_disable=
673 local solution_sysctl=
675 vshelper.isEnabled && vshelper.isEnabled warning || return 0
677 this_xid=$($_VSERVER_INFO - XID) ||
678 panic $"Failed to determine current context; aborting..."
680 ## Do nothing in other xid's; the helper will be executed in xid 0 only
681 test "$this_xid" = 0 || return 0
683 local proc_file=/proc/sys/kernel/vshelper
685 if ! test -r "$proc_file"; then
687 warnings=( "${warnings[@]}"
688 $"File '$proc_file' does not exist but is required for vshelper setup" )
691 vshelper=$(cat "$proc_file")
693 $_CMP -s "$vshelper" "$_VSHELPER" || {
694 warnings=( "${warnings[@]}"
695 $"The configured vshelper '$vshelper' does not match the 'vshelper'
696 script of the util-vserver package"
703 test -d "$__VSHELPERSTATEDIR" || {
704 warnings=( "${warnings[@]}"
706 The vshelper state-directory '$__VSHELPERSTATEDIR' does not exist; since
707 it is created by 'make install', this indicates a serious problem with
708 your util-vserver installation" )
712 test "${#warnings[@]}" -eq 0 || {
714 The following problem(s) were encountered while verifying vshelper
717 for i in "${warnings[@]}"; do
723 To fix this, you can:"
725 test -z "$solution_disable" || warning $"\
726 * disable vshelper entirely by executing
727 | touch \"$__CONFDIR/.defaults/apps/vshelper/disabled\"
728 * disable only this message by executing
729 | touch \"$__CONFDIR/.defaults/apps/vshelper/warning-disabled\""
731 test -x "$solution_sysctl" || warning $"\
732 * configure the util-vserver vshelper script, e.g. by adding
733 | kernel.vshelper = \"$_VSHELPER\"
734 to /etc/sysctl.conf and rebooting the machine, or by executing
735 | echo \"$_VSHELPER\" >$proc_file"
745 ## Usage: vshelper.isEnabled [<style>] [<vserver>]
746 function vshelper.isEnabled
748 local f=${1:+$1-}disabled
749 test ! -e "$__CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
750 $_VSERVER_INFO - FEATURE vshelper || return 1
751 if test -n "$2"; then
753 appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
754 test -z "$2" -o ! -e "$appdir/$f" || return 1
760 ## Usage: vshelper.isDebug [<vserver>]
761 function vshelper.isDebug
763 test ! -e "$__CONFDIR"/.defaults/apps/vshelper/debug || return 1
764 $_VSERVER_INFO - FEATURE vshelper || return 1
765 if test -n "$1"; then
767 appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || return 1
768 test -z "$1" -o ! -e "$appdir/debug" || return 1
774 function vshelper._getHandlerInternal
779 shift ## HACK: see below the note about the 'set -u' mode
781 while test "$#" -ge 2; do
786 test "$_vghi_mod" "$_vghi_obj" || continue
789 eval $_vghi_var=\$_vghi_obj
792 read _vghi_tmp <"$_vghi_obj"
793 eval $_vghi_var=:\$_vghi_tmp
795 (*) panic $"Internal error, unexpected modifier '$_vghi_mod'"
803 ## Usage: vshelper.getHandler <result-var> <vserver> <action>
804 function vshelper.getHandler
807 _vgh_appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || _vgh_appdir=
809 declare -a _vgh_search_list=( X )
810 ## HACK: when we are in 'set -u' mode, empty lists are causing errors
812 test -z "$_vgh_appdir" || _vgh_search_list=( "${_vgh_search_list[@]}" -x "$_vgh_appdir/$3" )
813 test -z "$_vgh_appdir" || _vgh_search_list=( "${_vgh_search_list[@]}" -e "$_vgh_appdir/action" )
814 _vgh_search_list=( "${_vgh_search_list[@]}" -x "$__CONFDIR"/.defaults/apps/vshelper/"$3" )
815 _vgh_search_list=( "${_vgh_search_list[@]}" -e "$__CONFDIR"/.defaults/apps/vshelper/action )
817 ! vshelper._getHandlerInternal "$1" "${_vgh_search_list[@]}" || return 0
821 ## Usage: vshelper.init <vserver> [<method> <args>*]
822 function vshelper.doInit
824 vshelper.isEnabled || return 0
827 xid=$($_VSERVER_INFO "$1" CONTEXT false) && test -n "$xid" || {
828 warning $"vshelper.init: can not determine xid of vserver '$vserver'; returned value was '$xid'"
832 local f="$__VSHELPERSTATEDIR/$xid"
839 if test -n "$2"; then
852 ## Usage: vshelper.doDestroy <vserver> <xid>
853 function vshelper.doDestroy
855 vshelper.isEnabled || return 0
857 $_RM -f "$__VSHELPERSTATEDIR/$2"
860 ## Usage: vshelper.initSync <vserver> <pipe-varname> [<method>]
861 function vshelper.initSync
864 _vis_tmpdir=$($_MKTEMPDIR /tmp/vserver-stop.XXXXXX) || {
865 warning $"Failed to generate temporary directory for vshelper sync"
869 local _vis_fifo="$_vis_tmpdir"/pipe
870 $_MKFIFO -m700 "$_vis_fifo"
871 vshelper.doInit "$1" "${method:-sync}" "$_vis_fifo"
875 ## Usage: vshelper.getSyncTimeout <vserver> <varname>
876 function vshelper.getSyncTimeout
878 local _vgst_appdir _vgst_file _vgst_tmp
879 _vgst_appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || _vgst_appdir=
881 findFile _vgst_file ${_vgst_appdir:+"$_vgst_appdir"/sync-timeout} "$__CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
882 test -n "$_vgst_file" || return 1
883 read _vgst_tmp <"$_vgst_file"
888 function _rpmFake.getCapFlags
892 if test -n "$ctx" && ! $_VSERVER_INFO - FEATURE migrate; then
893 set -- $($_CHCONTEXT_COMPAT --xid 1 \
894 $_SH -c "$_CAT /proc/[0-9]*/status | $_EGREP '^(CapBset|s_context|ctxflags)'" | \
895 $_GREP -B 1 -A 1 "^s_context: $ctx " | \
896 $_SED -e '1,3p;d' | $_AWK '{ print $2 }')
901 if test -n "$3"; then
902 RPM_FAKE_CAP=$[ ~0x$1 ]
905 RPM_FAKE_CAP=$[ ~0xd40c04ff ]
910 function rpmFake.init
914 vdir=$($_VSERVER_INFO "$1" VDIR) || vdir="$1"
915 ctx=$($_VSERVER_INFO "$1" CONTEXT) || ctx=
918 panic $"Can not find chroot environment at '$vdir' for '$1'"
920 _rpmFake.getCapFlags "$ctx"
922 RPM_FAKE_CHROOT=$vdir
926 function rpmFake.exec
928 export RPM_FAKE_CHROOT RPM_FAKE_CTX RPM_FAKE_CAP RPM_FAKE_FLAGS
930 LD_PRELOAD=$_RPM_FAKE_SO${LD_PRELOAD:+:$LD_PRELOAD} \