# 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}
( set -P && cd "$1" && pwd )
}
+## Usage: logging <message>
+function logging
+{
+ if test "$_VS_LOGFILE"; then
+ echo "$@" >>"$_VS_LOGFILE"
+ else
+ echo "$@"
+ fi
+}
+
+## Usage: warning <message>
+function warning
+{
+ if test "$_VS_ERRFILE"; then
+ echo "$@" >>"$_VS_ERRFILE"
+ else
+ echo "$@" >&2
+ fi
+}
+
+## Usage: panic <message>
+function panic
+{
+ if test "$_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: isNumber <arg>
+function isNumber
+{
+ local tmp
+ let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a "$1" || return 1
+ return 0
+}
+
+## 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 "$cfile"; then
+ cat "$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" != "$2" || return 0
function _pkgSetVarsBase
{
case "$vserver" in
- /*)
+ ./*|/*)
if test -d "$vserver/vdir"; then
BASEDIR=$vserver
VDIR=$(getPhysicalDir "$vserver/vdir")
test -d "$PKGDIR" || {
echo "Can not find configuration-directory for package-managment tools"
exit 1
- }
+ } >&2
findDir EXECDIR $PKGDIR/execdir /
else
VDIR=$(getPhysicalDir "$vserver")
test -d "$BASEDIR" || {
echo "Can not find configuration-directory"
exit 1
- }
+ } >&2
VDIR=$BASEDIR/vdir
- test -d "$VDIR" || VDIR=/vservers/$vserver
+ test -d "$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 $PKGDIR/execdir /
findDir APTCACHEDIR "$VDIR"/var/cache/apt
findDir APTARCHIVDIR "$VDIR"/var/cache/apt/archives /var/cache/apt/archives
fi
+
+ findFile APT_CONFIG "$APTETCDIR"/apt.conf ""
+ test -z "$APT_CONFIG" || export APT_CONFIG
}
function _pkgMountBase
_pkgMountBindDir "$RPMETCDIR" /etc/rpm
test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm
- "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint"
+ 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 || \
+ "$_SECURE_MOUNT" --chroot -n -t proc none /proc
+
+ popd >/dev/null
}
function _pkgSetEnvBase
case "$i" in
rpm) _pkgSetVarsRPM;;
apt) _pkgSetVarsApt;;
- *) echo "Unknown packaging flavor"; exit 1;;
+ *) echo "Unknown packaging flavor" >&2; exit 1;;
esac
done
_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
+}
+
function getAllVservers
{
local i
- declare -a tmp=()
+ declare -a _tmp=()
for i in $CONFDIR/*; do
test -d "$i" || continue
test ! -e "$i"/disabled || continue
test -d "$i"/vdir || continue
+ case "$i" in
+ *.~*~) continue;;
+ esac
- tmp=( "${tmp[@]}" "${i##$CONFDIR/}")
+ _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}")
done
- eval $1=\$tmp
+ eval $1='( "${_tmp[@]}" )'
+}
+
+## Usage: _getProcNumberCount <ctx> <var>
+function _getProcNumberCount
+{
+ local var=$2
+ local 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)
+ procnr_cnt=$2
+ else
+ procnr_cnt=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l )
+ fi
+
+ let procnr_cnt=procnr_cnt+0
+ eval $var=\$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
- eval read "$2" <"$1"/run
+
+ local _ctx
+ read _ctx <"$1"/run
+ eval "$2"=\$_ctx
test "$3" || return 0
- local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$ctx" | $_WC -l )
+ local _tmp
+ _getProcNumberCount "$_ctx" _tmp
eval "$3"=\$_tmp
- test "$4" -a $_tmp = 0 || return 0
- _tmp=$(readlink "$1/run")
- test "$_tmp" || return 1
- rm -f "$_tmp"
+ if test "$_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
{
## Called as 'getFileArray <varname> <filename>'
function getFileArray
{
- test -r "$2" || return 0
+ 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=$($_VSERVER_INFO - APIVER) || api=0
+ test $[ $api ] -${2:-ge} $[ $1 ]
+}
+
+## Usage: callInNamespace <vserver> <command> <args>*
+function callInNamespace
+{
+ local ctx=
+
+ isAvoidNamespace "$1" || \
+ ctx=$( $_VSERVER_INFO "$1" CONTEXT f ) || ctx=
+
+ shift
+ if test "$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 &>$ttyname
+}
+
+## Usage: pkgmgmt.guessStyle <vserver> <resultvar>
+function pkgmgmt.guessStyle()
+{
+ local vdir=$($_VSERVER_INFO "$1" VDIR) || {
+ echo $"Can not determine vserver-root" >&2
+ return 1
+ }
+ local cfgdir=$($_VSERVER_INFO "$1" APPDIR pkgmgmt) || :
+
+ if test "$cfgdir" -a -e "$cfgdir"/style; then
+ read style <"$cfgdir"/style
+ elif test -e "$vdir"/etc/redhat-release -o -e "$vdir"/etc/fedora-release; then
+ style=redhat
+ elif test -e "$vdir"/etc/mandrake-release; then
+ style=mandrake
+ elif test -e "$vdir"/etc/debian_version; then
+ style=debian
+ elif test -e "$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="$3"
+
+ local have_apt i
+ if test "$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 "$have_apt" && return 0 || return 1
+}
+
+function vshelper.doSanityCheck
+{
+ local vshelper this_xid i
+ declare -a warnings=()
+ local solution_disable=
+ local solution_sysctl=
+
+ vshelper.isEnabled && vshelper.isEnabled warning || return 0
+
+ this_xid=$($_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 exists 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 "$2"; then
+ local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || return 0
+ test -z "$2" -o ! -e "$appdir/$f" || return 1
+ fi
+
+ return 0
+}
+
+function vshelper._getHandlerInternal
+{
+ local var=$1
+ local tmp
+ shift
+ shift ## HACK: see below the note about the 'set -u' mode
+
+ while test "$#" -ge 2; do
+ local mod=$1
+ local obj=$2
+ shift 2
+
+ test "$mod" "$obj" || continue
+ case "$mod" in
+ (-x)
+ eval $var=\$obj
+ ;;
+ (-e)
+ read tmp <"$obj"
+ eval $var=:\$tmp
+ ;;
+ (*) panic $"Internal error, unexpected modifier '$mod'"
+ esac
+ return 0
+ done
+
+ return 1
+}
+
+## Usage: vshelper.getHandler <result-var> <vserver> <action>
+function vshelper.getHandler
+{
+ local appdir=$($_VSERVER_INFO "$2" APPDIR vshelper) || appdir=
+ local script
+ declare -a search_list=( X )
+ ## HACK: when we are in 'set -u' mode, empty lists are causing errors
+
+ test -z "$appdir" || search_list=( "${search_list[@]}" -x "$appdir/$3" )
+ test -z "$appdir" || search_list=( "${search_list[@]}" -e "$appdir/action" )
+ search_list=( "${search_list[@]}" -x "$CONFDIR"/.defaults/apps/vshelper/"$3" )
+ search_list=( "${search_list[@]}" -e "$CONFDIR"/.defaults/apps/vshelper/action )
+
+ ! vshelper._getHandlerInternal "$1" "${search_list[@]}" || return 0
+ eval $1=':restart'
+}
+
+## Usage: vshelper.init <vserver> [<method> <args>*]
+function vshelper.doInit
+{
+ vshelper.isEnabled || return 0
+
+ local xid=$($_VSERVER_INFO "$1" CONTEXT false) && test "$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 "$2"; then
+ shift 1
+ local i
+ for i; do
+ echo "$i"
+ done
+ else
+ echo "default"
+ fi >>"$f"
+
+ return 0
+}
+
+## Usage: vshelper.doDestroy <vserver> <xid>
+function vshelper.doDestroy
+{
+ vshelper.isEnabled || return 0
+
+ rm -f "$VSHELPERSTATEDIR/$2"
+}
+
+## Usage: vshelper.initSync <vserver> <pipe-varname>
+function vshelper.initSync
+{
+ local tmpdir=$(mktemp -d /tmp/vserver-stop.XXXXXX) || {
+ warning $"Failed to generate temporary directory for vshelper sync"
+ return 1
+ }
+
+ local fifo="$tmpdir"/pipe
+ mkfifo -m700 "$fifo"
+ vshelper.doInit "$1" sync "$fifo"
+ eval $2=\$fifo
+}
+
+## Usage: vshelper.getSyncTimeout <vserver> <varname>
+function vshelper.getSyncTimeout
+{
+ local appdir=$($_VSERVER_INFO "$1" APPDIR vshelper) || appdir=
+ local file tmp
+
+ findFile file ${appdir:+"$appdir"/sync-timeout} "$CONFDIR"/.defaults/apps/vshelper/sync-timeout ''
+ test "$file" || return 1
+ read tmp <"$file"
+ eval $2=\$tmp
+}