/usr/lib/util-vserver/functions is in util-vserver 0.30.216-pre2864-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2003,2004,2005,2006 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:: isDirectoryEmpty <dir> [<ignore-lost+found>]
function isDirectoryEmpty
{
(
shopt -s dotglob || *
shopt -s nullglob || *
ignore_lostfound=1
test -z "$2" -o "$2" = 0 || ignore_lostfound=
for i in "$1"/*; do
case "$i" in
($1/lost+found)
test "$ignore_lostfound" || exit 1
;;
(*) echo "$i"; exit 1
esac
done
exit 0
)
}
## Usage: logging <message>
function logging
{
if test -n "$_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
}
function colpanic
{
if test -n "$_VS_ERRFILE"; then
echo "$@" >>"$_VS_ERRFILE"
else
colorize error echo -n "$@" >&2
fi
echo
exit 1
}
function colwarning
{
colorize warning warning "$@"
}
function colinfo
{
colorize info echo "$@"
}
## 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 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 get_init_cwd
{
if test -n "$INIT_CWD"; then
echo "$INIT_CWD"
else
pwd
fi
}
function set_init_cwd
{
INIT_CWD="`pwd`"
export INIT_CWD
}
function _setVserverDir
{
local vserver="$1"
case "$vserver" in
./*) VSERVER_DIR="`get_init_cwd`/$vserver";;
/*) VSERVER_DIR="$vserver" ;;
*) VSERVER_DIR="$__CONFDIR/$vserver" ;;
esac
}
function _setVserverName
{
if test -e "$VSERVER_DIR"/name; then
read VSERVER_NAME <"$VSERVER_DIR"/name
else
VSERVER_NAME=$(basename "$VSERVER_DIR")
fi
}
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
}
function isNamespaceCleanup
{
local cfgdir
$_VSERVER_INFO - FEATURE namespace || return 1
cfgdir=$($_VSERVER_INFO "$1" CFGDIR) || return 1
isAvoidNamespace "$1" && return 1
test -e "$cfgdir"/namespace-cleanup && return 0
test -e "$cfgdir"/nonamespace-cleanup -o \
-e "$__CONFDIR"/.defaults/nonamespace-cleanup && return 1
return 0
}
## 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 '^Tasks:' "/proc/virtual/$1/status" 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
if test "$1" = "$($_VUNAME -g --xid "$_gvs_ctx" context)"; then
test -n "$3" || return 0
local _gvs_tmp
_getProcNumberCount "$_gvs_ctx" _gvs_tmp
eval "$3"=\$_gvs_tmp
else
test -n "$3" || return 1
eval "$3"=0
_gvs_tmp=0
fi
if test "$_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
{
local _gfa_var=$1
local _gfa_file
shift
findFile _gfa_file "$@" ''
test -n "$_gfa_file" -a -r "$_gfa_file" || return 0
local IFS=$_VS_NEWLINE
eval "$_gfa_var"='( $(< "$_gfa_file") )'
}
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" \
$2 /dev/null
if test -f "$ttyname"; then
exec </dev/null
else
exec <$ttyname
fi
exec >>$ttyname 2>&1
}
## 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 "$1" 1 &>/dev/null || :
}
function useVlogin
{
test ! -e "$__CONFDIR/.defaults/apps/vlogin/disable"
}
## 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" "$_VSHELPER" || {
local readable=""
test -r "$vshelper" && readable=1
warnings=( "${warnings[@]}"
$"The configured vshelper '$vshelper' does not match the 'vshelper'
script of the util-vserver package.${readable:+ Maybe you have two versions installed?}"
)
solution_disable=1
solution_sysctl=1
}
fi
test -d "$__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 '$xid'
This usually means that you're using an init-less init-style, but the
guest isn't configured to start any service. Try enabling a service,
changing the init-style, or making the contexts persistent."
return 1
}
local f="$__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 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 $2=\$_vgst_tmp
}
function vshelper.initStopSync
{
local _iss_sync_dir=$($_MKTEMPDIR vshelper-stop-sync.XXXXXX) || {
warning $"Failed to generate directory for vshelper sync"
exit 1
}
$_MKFIFO -m700 "$_iss_sync_dir/pipe"
eval "$1"=\$_iss_sync_dir
VSHELPER_STOP_SYNC="$_iss_sync_dir/pipe"
export VSHELPER_STOP_SYNC
}
function vshelper.waitForStopSync
{
local sync_dir=$1
cat "$sync_dir/pipe" &> /dev/null
rm -fr "$sync_dir"
}
function vshelper.doStopSync
{
test ! -p "$VSHELPER_STOP_SYNC" || echo stopped > "$VSHELPER_STOP_SYNC"
}
function vshelper.isStopSync
{
test -p "$VSHELPER_STOP_SYNC" || return 1
return 0
}
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:+:$LD_PRELOAD} \
exec "$@"
}
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