--- /dev/null
+# $Id: functions,v 1.62 2005/07/03 17:42:49 ensc Exp $ --*- sh -*--
+
+# Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+_VS_LOGFILE=
+_VS_ERRFILE=
+
+_VS_NEWLINE='
+'
+declare -r _VS_NEWLINE=${_VS_NEWLINE:0-1}
+declare -r VS_ALLVSERVERS_ARGS=all,marked,unmarked,stopped,running
+
+function findObject
+{
+ local _fo_mod=$1
+ local _fo_var=$2
+ local _fo_file=
+ local _fo_i=X
+ shift 2
+
+ for _fo_i; do
+ test -n "$_fo_i" || continue
+ test ! $_fo_mod "$_fo_i" || { _fo_file=$_fo_i; break; }
+ done
+
+ test -z "$_fo_i" -o -n "$_fo_file" || {
+ echo "Can not find file for '$_fo_var'; aborting"
+ exit 1
+ } >&2
+
+ eval "$_fo_var=\"$_fo_file\""
+}
+
+function findFile
+{
+ findObject -f "$@"
+}
+
+function findDir
+{
+ findObject -d "$@"
+}
+
+function findAndCopy
+{
+ local dst=$1
+ test ! -s "$dst" || return 0
+
+ local tmp
+ shift
+ findFile tmp "$@"
+
+ test -n "$tmp" -a -s "$tmp" || return 0
+ $_CP -af "$tmp" "$dst"
+}
+
+## Usage: isRegularFile <filename> [<mod>]
+function isRegularFile
+{
+ test ${2:--f} "$1" || return 1
+
+ case $1 in
+ (*.rpmsave|*.rpmnew|*.rpmorig|*.cfsaved*|*.~*~) return 1;;
+ esac
+
+ return 0
+}
+
+function getPhysicalDir
+{
+ ( set -P && cd "$1" && pwd )
+}
+
+## Usage: logging <message>
+function logging
+{
+ if test -n "$_VS_LOGFILE"; then
+ echo "$@" >>"$_VS_LOGFILE"
+ else
+ echo "$@"
+ fi
+}
+
+## Usage: warning <message>
+function warning
+{
+ if test -n "$_VS_ERRFILE"; then
+ echo "$@" >>"$_VS_ERRFILE"
+ else
+ echo "$@" >&2
+ fi
+}
+
+## Usage: panic <message>
+function panic
+{
+ if test -n "$_VS_ERRFILE"; then
+ echo "$@" >>"$_VS_ERRFILE"
+ else
+ echo "$@" >&2
+ fi
+
+ exit 1
+}
+
+## Usage: execute <message>
+function execute
+{
+ test -z "${DEBUG_EXEC:-}" || echo "$@"
+ test "${DEBUG_EXEC:-}" = noexec || exec "$@"
+ exit 0
+}
+
+
+## Usage: spawn <message>
+function spawn
+{
+ test -z "${DEBUG_EXEC:-}" || echo "$@"
+ test "${DEBUG_EXEC:-}" = noexec || "$@"
+}
+
+## Usage: isNumber <arg>
+function isNumber
+{
+ local tmp
+ let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a -n "$1" || return 1
+ return 0
+}
+
+## Usage: hasSubstring <haystack> <needle>+
+function hasSubstring
+{
+ local pat=$1
+ local i
+
+ shift
+
+ for i; do
+ test x"${pat/*$i*/$i}" = x"$i" || continue
+ return 0
+ done
+
+ return 1
+}
+
+## Usage: colorize <style> <command>
+function colorize
+{
+ local style=$1
+ shift
+
+ if ! $_TTY -s; then
+ "$@"
+ else
+ local cfile
+ findFile cfile "$__CONFDIR"/.defaults/styles/"$style" ''
+ if test -n "$cfile"; then
+ $_CAT "$cfile"
+ else
+ case "$style" in
+ (bold) echo -ne "\e[1m";;
+ (emph) echo -ne "\e[34m";;
+ (info) echo -ne "\e[0;34m";;
+ (warn*) echo -ne "\e[1;31m";;
+ (error) echo -ne "\e[1;33;41m";;
+ (*) ;;
+ esac
+ fi
+
+ "$@"
+ echo -ne "\e[m"
+ fi
+}
+
+## Usage: xtermTitle <title>
+function xtermTitle
+{
+ $_TTY -s || return 0
+ echo -ne "\e]0;$@\007"
+}
+
+_VS_LOCKS=''
+## Usage: lock <lockfile> [<timeout>]
+function lock
+{
+ local tmp=$($_MKTEMP /tmp/vserver-lock.XXXXXX)
+ $_RM -f $tmp
+ $_MKFIFO -m600 $tmp
+
+ $_LOCKFILE "$1" $tmp $2 &
+ $_GREP -q true $tmp 2>/dev/null || return 1
+
+ _VS_LOCKS="$! $_VS_LOCKS"
+}
+
+## Usage: unlock [<num>]
+function unlock
+{
+ local num=$1
+ local i
+
+ set -- $_VS_LOCKS
+ while test "$#" -gt 0; do
+ kill -HUP "$1" >/dev/null || :
+ shift
+ test "$num" != 1 || break
+ test -z "$num" || let --num
+ done
+ _VS_LOCKS="$@"
+}
+
+function _pkgMountBindDir()
+{
+ test "$1" != "$2" || return 0
+
+ $_MOUNT -n --bind "$1" "$2"
+}
+
+function _pkgSetVarsBase
+{
+ case "$vserver" in
+ ./*|/*)
+ if test -d "$vserver/vdir"; then
+ BASEDIR=$vserver
+ VDIR=$(getPhysicalDir "$vserver/vdir")
+
+ PKGDIR=$BASEDIR/apps/pkgmgmt
+ test -d "$PKGDIR" || {
+ echo "Can not find configuration-directory for package-managment tools"
+ exit 1
+ } >&2
+ findDir EXECDIR $PKGDIR/execdir /
+ else
+ VDIR=$(getPhysicalDir "$vserver")
+ PKGDIR=
+ fi
+ ;;
+ *)
+ BASEDIR=$__CONFDIR/$vserver
+ test -d "$BASEDIR" || {
+ echo "Can not find configuration-directory"
+ exit 1
+ } >&2
+
+ VDIR=$BASEDIR/vdir
+ test -d "$VDIR" || VDIR=$__DEFAULT_VSERVERDIR/$vserver
+ VDIR=$(getPhysicalDir "$VDIR")
+
+ PKGDIR=$BASEDIR/apps/pkgmgmt
+ test -d "$PKGDIR" || {
+ echo "Can not find configuration-directory for package-managment tools"
+ exit 1
+ } >&2
+
+ findDir EXECDIR $PKGDIR/execdir /
+
+ ;;
+ esac
+
+ if test -z "$WORKAROUND_106057"; then
+ _rpmdb_mntpoint=/dev
+ else
+ _rpmdb_mntpoint=/.rpmdb
+ fi
+}
+
+function _pkgSetVarsRPM
+{
+ if test -n "$PKGDIR"; then
+ findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm
+ findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state
+
+ findDir RPMLIBDIR $PKGDIR/rpmlib /
+
+ else
+ findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm
+ findDir RPMSTATEDIR "$VDIR"/var/lib/rpm
+ RPMLIBDIR=/
+ fi
+
+ RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR")
+ RPMETCDIR=$(getPhysicalDir "$RPMETCDIR")
+}
+
+function _pkgSetVarsApt
+{
+ if test -n "$PKGDIR"; then
+ findDir APTETCDIR $PKGDIR/aptetc $PKGDIR/base/apt/etc /etc/apt
+ findDir APTSTATEDIR $PKGDIR/aptstate $PKGDIR/base/apt/state
+ findDir APTCACHEDIR $PKGDIR/aptcache $PKGDIR/base/apt/cache
+ findDir APTARCHIVDIR $PKGDIR/aptarchives $PKGDIR/base/apt/archives /var/cache/apt/archives
+ else
+ findDir APTETCDIR "$VDIR"/etc/apt /etc/apt
+ findDir APTSTATEDIR "$VDIR"/var/state/apt
+ findDir APTCACHEDIR "$VDIR"/var/cache/apt
+ findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
+ fi
+
+ findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
+ test -z "$APT_CONFIG" || export APT_CONFIG
+}
+
+function _pkgSetVarsYum
+{
+ if test -n "$PKGDIR"; then
+ findDir YUMETCDIR $PKGDIR/yumetc $PKGDIR/base/yum/etc /etc
+ findDir YUMCACHEDIR $PKGDIR/yumcache $PKGDIR/base/yum/cache
+ else
+ findDir YUMETCDIR "$VDIR"/etc /etc
+ findDir YUMCACHEDIR "$VDIR"/var/cache/yum
+ fi
+}
+
+
+function _pkgMountBase
+{
+ :
+}
+
+function _pkgMountApt
+{
+ :
+}
+
+function _pkgMountYum
+{
+ :
+}
+
+function _pkgMountRPM
+{
+ _pkgMountBindDir "$RPMETCDIR" /etc/rpm
+ test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
+
+ pushd "$VDIR" >/dev/null
+
+ $_SECURE_MOUNT --chroot -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
+ test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
+
+ test -e "$VDIR"/proc/self/status || \
+ $_SECURE_MOUNT --chroot -n -t proc none /proc
+
+ popd >/dev/null
+}
+
+function _pkgSetEnvBase
+{
+ test "$EXECDIR" = "/" || {
+ PATH=$EXECDIR:$PATH
+ LD_LIBRARY_PATH=$EXECDIR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
+ }
+
+ export PATH LD_LIBRARY_PATH
+}
+
+function _pkgSetEnvApt
+{
+ :
+}
+
+function _pkgSetEnvYum
+{
+ :
+}
+
+function _pkgSetEnvRPM
+{
+ CUR_VSERVER=$vserver
+ RPM_FAKE_NAMESPACE_MOUNTS=$_rpmdb_mntpoint
+ RPM_BINARY=$_VRPM_PRELOAD
+
+ export CUR_VSERVER RPM_FAKE_NAMESPACE_MOUNTS RPM_BINARY
+}
+
+function pkgInit
+{
+ local i
+ local vserver=$1
+ shift
+
+ _pkgSetVarsBase
+ for i; do
+ case "$i" in
+ rpm) _pkgSetVarsRPM;;
+ apt) _pkgSetVarsApt;;
+ yum) _pkgSetVarsYum;;
+ *) echo "Unknown packaging flavor" >&2; exit 1;;
+ esac
+ done
+
+ _pkgMountBase
+ for i; do
+ case "$i" in
+ rpm) _pkgMountRPM;;
+ apt) _pkgMountApt;;
+ yum) _pkgMountYum;;
+ esac
+ done
+
+ _pkgSetEnvBase
+ for i; do
+ case "$i" in
+ rpm) _pkgSetEnvRPM;;
+ apt) _pkgSetEnvApt;;
+ yum) _pkgSetEnvYum;;
+ esac
+ done
+
+ _PKG_FLAVORS="$@"
+ _PKG_VSERVER=$vserver
+}
+
+function isAvoidNamespace
+{
+ local cfgdir
+
+ $_VSERVER_INFO - FEATURE namespace || return 0
+ cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 0
+ test ! -e "$cfgdir"/namespace || return 1
+ test -e "$__CONFDIR"/.defaults/nonamespace -o \
+ -e "$cfgdir"/nonamespace
+}
+
+## Usage: getAllVservers <var> [<KIND>*]
+function getAllVservers
+{
+ local _ga_i
+ declare -a _ga_tmp=()
+
+ for _ga_i in $__CONFDIR/*; do
+ isRegularFile "$_ga_i" -d || continue
+
+ test ! -e "$_ga_i"/disabled || continue
+ test -d "$_ga_i"/vdir || continue
+
+ local _ga_doadd=1
+ local _ga_markfile=$_ga_i/apps/init/mark
+
+ case ${2:-ALL} in
+ (MARKED) test -s "$_ga_markfile" || _ga_doadd=;;
+ (UNMARKED) test ! -s "$_ga_markfile" || _ga_doadd=;;
+ (STOPPED) ! $_VSERVER "$_ga_i" running &>/dev/null || _ga_doadd=;;
+ (RUNNING) $_VSERVER "$_ga_i" running &>/dev/null || _ga_doadd=;;
+ (ALL) ;;
+ (*) panic $"Unknown vserver tagging '$2'";;
+ esac
+
+ test -z "$_ga_doadd" || _ga_tmp=( "${_ga_tmp[@]}" "${_ga_i##$__CONFDIR/}")
+ done
+
+ eval $1='( "${_ga_tmp[@]}" )'
+}
+
+## Usage: getAllVserversByArg <var> <arg>
+function getAllVserversByArg
+{
+ local _gav_mark=
+
+ case $2 in
+ (--all) _gav_mark=ALL;;
+ (--marked) _gav_mark=MARKED;;
+ (--unmarked) _gav_mark=UNMARKED;;
+ (--stopped) _gav_mark=STOPPED;;
+ (--running) _gav_mark=RUNNING;;
+ (*) return 1;;
+ esac
+
+ getAllVservers "$1" "$_gav_mark"
+}
+
+## Usage: _getProcNumberCount <ctx> <var>
+function _getProcNumberCount
+{
+ local _gp_var=$2
+ local _gp_procnr_cnt=0
+
+ # Use /proc/virtual from kernel 2.6 when possible
+ if test -d "/proc/virtual"; then
+ set -- $($_GREP '^PROC:' "/proc/virtual/$1/limit" 2>/dev/null)
+ _gp_procnr_cnt=$2
+ else
+ _gp_procnr_cnt=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
+ fi
+
+ let _gp_procnr_cnt=_gp_procnr_cnt+0
+ eval $_gp_var=\$_gp_procnr_cnt
+}
+
+## Usage: getVserverCtx <vdir> <result-varname> [<procnumber-varname> [<do-cleanup>]]
+## Returns: 0 iff vserver is running
+function getVserverStatus
+{
+ test -r "$1"/run || return 1
+
+ local _gvs_ctx
+ read _gvs_ctx <"$1"/run
+ eval "$2"=\$_gvs_ctx
+
+ test -n "$3" || return 0
+ local _gvs_tmp
+ _getProcNumberCount "$_gvs_ctx" _gvs_tmp
+ eval "$3"=\$_gvs_tmp
+
+ if test "$_gvs_tmp" = 0; then
+ local runfile=$($_READLINK "$1/run")
+ test -z "$4" || $_RM -f "$runfile"
+ return 1
+ fi
+
+ return 0
+}
+
+## Usage: isCtxRunning <ctx>
+function isCtxRunning
+{
+ local _tmp
+ _getProcNumberCount "$1" _tmp
+ test $_tmp -gt 0
+}
+
+## Usage: isVserverRunning <vdir> [<ctx-varname>]
+function isVserverRunning
+{
+ local _ivr_ctx _ivr_procnum
+
+ getVserverStatus "$1" _ivr_ctx _ivr_procnum 1 || return 1
+ test "$_ivr_procnum" != 0 || return 1
+ test -z "$2" || eval "$2"=\$_ivr_ctx
+ return 0
+}
+
+## Called as 'getFileValue <varname> <filename>+'
+function getFileValue
+{
+ local _gfv_var=$1
+ local _gfv_file
+ shift
+
+ findFile _gfv_file "$@" ''
+ test -n "$_gfv_file" -a -r "$_gfv_file" || return 0
+ eval read "$_gfv_var" <"$_gfv_file"
+}
+
+## Called as 'getFileArray <varname> <filename>'
+function getFileArray
+{
+ test -r "$2" || return 1
+
+ local IFS=$_VS_NEWLINE
+ eval "$1"='( $(< "$2") )'
+}
+
+function checkComponents
+{
+ local i
+ local msg=$1
+ local x_failed=
+
+ shift
+
+ for i; do
+ local failed=
+ case "$i" in
+ (core) test -x "$_CHBIND" || failed=1;;
+ (build) test -x "$_VSERVER_BUILD" || failed=1;;
+ (sysv) test -x "$__INITRDDIR/vserver" || failed=1;;
+ (devel) test -d "$__INCLUDEDIR/vserver.h" || failed=1;;
+ (*) echo "Unknown component '$i'" >&2
+ return false
+ ;;
+ esac
+
+ test -z "$failed" || {
+ echo "$msg: $i"
+ x_failed=1
+ } >&2
+ done
+
+ test -z "$x_failed"
+}
+
+## Usage: isKernelAPI <ver> [<cmp-modifier>]
+function isKernelAPI
+{
+ local api
+ api=$($_VSERVER_INFO - APIVER) || api=0
+ test $[ $api ] -${2:-ge} $[ $1 ]
+}
+
+## Usage: callInNamespace <vserver> <command> <args>*
+function callInNamespace
+{
+ local ctx=
+
+ isAvoidNamespace "$1" || \
+ ctx=$( $_VSERVER_INFO "$1" CONTEXT f ) || ctx=
+
+ shift
+ if test -n "$ctx"; then
+ $_VNAMESPACE --enter "$ctx" -- "$@"
+ else
+ "$@"
+ fi
+}
+
+## Usage: setDefaultTTY <vdir> [<fallback-tty>]
+function setDefaultTTY
+{
+ local cfgdir ttyname
+
+ cfgdir=$($_VSERVER_INFO "$1" APPDIR init) || cfgdir=
+ findObject -e ttyname \
+ ${cfgdir:+"$cfgdir"/tty} \
+ "$__CONFDIR/.defaults/apps/init/tty" \
+ $2 /dev/null
+
+ exec <$ttyname
+ exec &>$ttyname
+}
+
+## Usage: killContext <XID> [<SIG>]
+function killContext
+{
+ local sig=${2:-9}
+
+ #$_VKILL -s STOP --xid "$1" 1 &>/dev/null || :
+ $_VKILL -s "$sig" --xid "$1" 1 &>/dev/null || :
+ $_VKILL -s "$sig" --xid "$1" &>/dev/null || :
+ #$_VKILL -s "$sig" --xid "$1" 1 &>/dev/null || :
+ #$_VKILL -s CONT --xid "$1" 1 &>/dev/null || :
+}
+
+## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
+function pkgmgmt.guessStyle()
+{
+ local _pgs_vdir
+ _pgs_vdir=$($_VSERVER_INFO "$1" VDIR) || {
+ echo $"Can not determine vserver-root" >&2
+ return 1
+ }
+ local _pgs_cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
+
+ if test -n "$_pgs_cfgdir" -a -e "$_pgs_cfgdir"/style; then
+ read style <"$_pgs_cfgdir"/style
+ elif test -e "$_pgs_vdir"/etc/redhat-release -o -e "$_pgs_vdir"/etc/fedora-release; then
+ style=redhat
+ elif test -e "$_pgs_vdir"/etc/mandrake-release; then
+ style=mandrake
+ elif test -e "$_pgs_vdir"/etc/debian_version; then
+ style=debian
+ elif test -e "$_pgs_vdir"/etc/SuSE-release; then
+ style=suse
+ else
+ echo $"Can not determine packagemanagement style" >&2
+ return 1
+ fi
+
+ eval $2=\$style
+ return 0
+}
+
+## Usage: pkgmgmt.isInternal <vserver>
+## returns true iff <vserver> is configured for internal packagemanagement
+## A typical application is
+## | is_external=
+## | pkgmgmt.isInternal "$vserver" || is_external=1
+function pkgmgmt.isInternal
+{
+ local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
+
+ test -z "$cfgdir" -o ! -d "$cfgdir" -o -e "$cfgdir"/internal
+}
+
+## Usage: pkgmgmt.isAptAvailable <cfgdir> <vdir> [<is-internal>]
+function pkgmgmt.isAptAvailable
+{
+ local cfgdir="$1"
+ local vdir="$2"
+ local is_internal="$3"
+
+ local have_apt i
+ if test -n "$is_internal"; then
+ have_apt=1
+ test -d "$cfgdir"/base/apt -o -d "$cfgdir"/aptetc || have_apt=
+ else
+ have_apt=
+ for i in /bin /usr/bin /usr/local/bin; do
+ test ! -x "$vdir$i"/apt-get || { have_apt=1; break; }
+ done
+ fi
+
+ test -n "$have_apt" && return 0 || return 1
+}
+
+## Usage: pkgmgmt.isYumAvailable <cfgdir> <vdir> [<is-internal>]
+function pkgmgmt.isYumAvailable
+{
+ local cfgdir="$1"
+ local vdir="$2"
+ local is_internal="$3"
+
+ local have_yum i
+ if test -n "$is_internal"; then
+ have_yum=1
+ test -d "$cfgdir"/base/yum -o -d "$cfgdir"/yumetc || have_yum=
+ else
+ have_yum=
+ for i in /bin /usr/bin /usr/local/bin; do
+ test ! -x "$vdir$i"/yum || { have_yum=1; break; }
+ done
+ fi
+
+ test -n "$have_yum" && return 0 || return 1
+}
+
+
+function vshelper.doSanityCheck
+{
+ local vshelper this_xid i
+ declare -a warnings=()
+ local solution_disable=
+ local solution_sysctl=
+
+ vshelper.isEnabled && vshelper.isEnabled warning || return 0
+
+ this_xid=$($_VSERVER_INFO - XID) ||
+ panic $"Failed to determine current context; aborting..."
+
+ ## Do nothing in other xid's; the helper will be executed in xid 0 only
+ test "$this_xid" = 0 || return 0
+
+ local proc_file=/proc/sys/kernel/vshelper
+
+ if ! test -r "$proc_file"; then
+ vshelper=
+ warnings=( "${warnings[@]}"
+ $"File '$proc_file' does not exist but is required for vshelper setup" )
+ solution_disable=1
+ else
+ vshelper=$(cat "$proc_file")
+
+ $_CMP -s "$vshelper" "$_VSHELPER" || {
+ warnings=( "${warnings[@]}"
+ $"The configured vshelper '$vshelper' does not match the 'vshelper'
+ script of the util-vserver package"
+ )
+ solution_disable=1
+ solution_sysctl=1
+ }
+ fi
+
+ test -d "$__VSHELPERSTATEDIR" || {
+ warnings=( "${warnings[@]}"
+ $"\
+The vshelper state-directory '$__VSHELPERSTATEDIR' does not exist; since
+it is created by 'make install', this indicates a serious problem with
+your util-vserver installation" )
+ solution_disable=1
+ }
+
+ test "${#warnings[@]}" -eq 0 || {
+ warning $"\
+The following problem(s) were encountered while verifying vshelper
+functionality:"
+
+ for i in "${warnings[@]}"; do
+ warning "* $i"
+ done
+
+ warning $"\
+
+To fix this, you can:"
+
+ test -z "$solution_disable" || warning $"\
+* disable vshelper entirely by executing
+ | touch \"$__CONFDIR/.defaults/apps/vshelper/disabled\"
+* disable only this message by executing
+ | touch \"$__CONFDIR/.defaults/apps/vshelper/warning-disabled\""
+
+ test -x "$solution_sysctl" || warning $"\
+* configure the util-vserver vshelper script, e.g. by adding
+ | kernel.vshelper = $_VSHELPER
+ to /etc/sysctl.conf and rebooting the machine, or by executing
+ | echo \"$_VSHELPER\" >$proc_file"
+
+ warning ""
+
+ return 1
+ }
+
+ return 0
+}
+
+## Usage: vshelper.isEnabled [<style>] [<vserver>]
+function vshelper.isEnabled
+{
+ local f=${1:+$1-}disabled
+ test ! -e "$__CONFDIR"/.defaults/apps/vshelper/"$f" || return 1
+ $_VSERVER_INFO - FEATURE vshelper || return 1
+ if test -n "$2"; then
+ local appdir
+ appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
+ test -z "$2" -o ! -e "$appdir/$f" || return 1
+ fi
+
+ return 0
+}
+
+## Usage: vshelper.isDebug [<vserver>]
+function vshelper.isDebug
+{
+ test ! -e "$__CONFDIR"/.defaults/apps/vshelper/debug || return 0
+ $_VSERVER_INFO - FEATURE vshelper || return 1
+ if test -n "$1"; then
+ local appdir
+ appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || return 1
+ test ! -e "$appdir/debug" || return 0
+ fi
+
+ return 1
+}
+
+function vshelper._getHandlerInternal
+{
+ local _vghi_var=$1
+ local _vghi_tmp
+ shift
+ shift ## HACK: see below the note about the 'set -u' mode
+
+ while test "$#" -ge 2; do
+ local _vghi_mod=$1
+ local _vghi_obj=$2
+ shift 2
+
+ test "$_vghi_mod" "$_vghi_obj" || continue
+ case "$_vghi_mod" in
+ (-x)
+ eval $_vghi_var=\$_vghi_obj
+ ;;
+ (-e)
+ read _vghi_tmp <"$_vghi_obj"
+ eval $_vghi_var=:\$_vghi_tmp
+ ;;
+ (*) panic $"Internal error, unexpected modifier '$_vghi_mod'"
+ esac
+ return 0
+ done
+
+ return 1
+}
+
+## Usage: vshelper.getHandler <result-var> <vserver> <action>
+function vshelper.getHandler
+{
+ local _vgh_appdir
+ _vgh_appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || _vgh_appdir=
+
+ declare -a _vgh_search_list=( X )
+ ## HACK: when we are in 'set -u' mode, empty lists are causing errors
+
+ test -z "$_vgh_appdir" || _vgh_search_list=( "${_vgh_search_list[@]}" -x "$_vgh_appdir/$3" )
+ test -z "$_vgh_appdir" || _vgh_search_list=( "${_vgh_search_list[@]}" -e "$_vgh_appdir/action" )
+ _vgh_search_list=( "${_vgh_search_list[@]}" -x "$__CONFDIR"/.defaults/apps/vshelper/"$3" )
+ _vgh_search_list=( "${_vgh_search_list[@]}" -e "$__CONFDIR"/.defaults/apps/vshelper/action )
+
+ ! vshelper._getHandlerInternal "$1" "${_vgh_search_list[@]}" || return 0
+ eval $1=':restart'
+}
+
+## Usage: vshelper.init <vserver> [<method> <args>*]
+function vshelper.doInit
+{
+ vshelper.isEnabled || return 0
+
+ local xid
+ xid=$($_VSERVER_INFO "$1" CONTEXT false) && test -n "$xid" || {
+ warning $"vshelper.init: can not determine xid of vserver '$vserver'; returned value was '$xid'"
+ return 1
+ }
+
+ local f="$__VSHELPERSTATEDIR/$xid"
+
+ set -C
+ $_RM -f "$f"
+ echo "$1" >"$f"
+ set +C
+
+ if test -n "$2"; then
+ shift 1
+ local i
+ for i; do
+ echo "$i"
+ done
+ else
+ echo "default"
+ fi >>"$f"
+
+ return 0
+}
+
+## Usage: vshelper.doDestroy <vserver> <xid>
+function vshelper.doDestroy
+{
+ vshelper.isEnabled || return 0
+
+ $_RM -f "$__VSHELPERSTATEDIR/$2"
+}
+
+## Usage: vshelper.initSync <vserver> <pipe-varname> [<method>]
+function vshelper.initSync
+{
+ local _vis_tmpdir
+ _vis_tmpdir=$($_MKTEMPDIR /tmp/vserver-stop.XXXXXX) || {
+ warning $"Failed to generate temporary directory for vshelper sync"
+ return 1
+ }
+
+ local _vis_fifo="$_vis_tmpdir"/pipe
+ $_MKFIFO -m700 "$_vis_fifo"
+ vshelper.doInit "$1" "${3:-sync}" "$_vis_fifo"
+ eval $2=\$_vis_fifo
+}
+
+## Usage: vshelper.getSyncTimeout <vserver> <varname>
+function vshelper.getSyncTimeout
+{
+ local _vgst_appdir _vgst_file _vgst_tmp
+ _vgst_appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || _vgst_appdir=
+
+ findFile _vgst_file ${_vgst_appdir:+"$_vgst_appdir"/sync-timeout} "$__CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
+ test -n "$_vgst_file" || return 1
+ read _vgst_tmp <"$_vgst_file"
+ eval $2=\$_vgst_tmp
+}
+
+
+function _rpmFake.getCapFlags
+{
+ local ctx=$1
+
+ if test -n "$ctx" && ! $_VSERVER_INFO - FEATURE migrate; then
+ set -- $($_CHCONTEXT_COMPAT --xid 1 \
+ $_SH -c "$_CAT /proc/[0-9]*/status | $_EGREP '^(CapBset|s_context|ctxflags)'" | \
+ $_GREP -B 1 -A 1 "^s_context: $ctx " | \
+ $_SED -e '1,3p;d' | $_AWK '{ print $2 }')
+ else
+ set --
+ fi
+
+ if test -n "$3"; then
+ RPM_FAKE_CAP=$[ ~0x$1 ]
+ RPM_FAKE_FLAGS=$3
+ else
+ RPM_FAKE_CAP=$[ ~0xd40c04ff ]
+ RPM_FAKE_FLAGS=4
+ fi
+}
+
+function rpmFake.init
+{
+ local vdir ctx
+
+ vdir=$($_VSERVER_INFO "$1" VDIR) || vdir="$1"
+ ctx=$($_VSERVER_INFO "$1" CONTEXT) || ctx=
+
+ test -d "$vdir" ||
+ panic $"Can not find chroot environment at '$vdir' for '$1'"
+
+ _rpmFake.getCapFlags "$ctx"
+
+ RPM_FAKE_CHROOT=$vdir
+ RPM_FAKE_CTX=$ctx
+}
+
+function rpmFake.exec
+{
+ export RPM_FAKE_CHROOT RPM_FAKE_CTX RPM_FAKE_CAP RPM_FAKE_FLAGS
+
+ LD_PRELOAD=$_RPM_FAKE_SO${LD_PRELOAD:+:$LD_PRELOAD} \
+ exec "$@"
+}
git://git.onelab.eu / util-vserver.git / blobdiff