X-Git-Url: http://git.linux-vserver.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=util-vserver%2Fscripts%2Ffunctions;h=4b50d0a5d3e22f62c028ae1d7de360ab80fd49c3;hb=c50b242740fa7305667d0c08986ea4fdceeb071e;hp=6735f2ee6e1c72b605dadf59fc3b2c5b438dc714;hpb=0436b01662c9f461544235dfc4d026ade36d3f1f;p=util-vserver.git diff --git a/util-vserver/scripts/functions b/util-vserver/scripts/functions index 6735f2e..4b50d0a 100644 --- a/util-vserver/scripts/functions +++ b/util-vserver/scripts/functions @@ -15,6 +15,13 @@ # 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} + function findObject { local mod=$1 @@ -46,11 +53,99 @@ function findDir findObject -d "$@" } +function findAndCopy +{ + local dst=$1 + test ! -s "$dst" || return 0 + + local tmp + shift + findFile tmp "$@" + + test "$tmp" -a -s "$tmp" || return 0 + cp -af "$tmp" "$dst" +} + function getPhysicalDir { ( set -P && cd "$1" && pwd ) } +function logging +{ + if test "$_VS_LOGFILE"; then + echo "$@" >>"$_VS_LOGFILE" + else + echo "$@" + fi +} + +function warning +{ + if test "$_VS_ERRFILE"; then + echo "$@" >>"$_VS_ERRFILE" + else + echo "$@" >&2 + fi +} + +function panic +{ + if test "$_VS_ERRFILE"; then + echo "$@" >>"$_VS_ERRFILE" + else + echo "$@" >&2 + fi + + exit 1 +} + +function execute +{ + test -z "${DEBUG_EXEC:-}" || echo "$@" + test "${DEBUG_EXEC:-}" = noexec || exec "$@" + exit 0 +} + +## Usage: isNumber +function isNumber +{ + local tmp + let tmp=$1+0 2>/dev/null || test -z "${1//0/}" -a "$1" || return 1 + return 0 +} + +_UV_LOCKS='' +## Usage: lock [] +function lock +{ + local tmp=$(mktemp /tmp/vserver-lock.XXXXXX) + rm -f $tmp + mkfifo -m600 $tmp + + sleep 10 + $_LOCKFILE "$1" $tmp $2 & + cat <$tmp >/dev/null + + _UV_LOCKS="$! $_UV_LOCKS" +} + +## Usage: unlock [] +function unlock +{ + local num=$1 + local i + + set -- $_UV_LOCKS + while test "$#" -gt 0; do + kill -HUP "$1" >/dev/null || : + shift + test "$num" != 1 || break + test -z "$num" || let --num + done + _UV_LOCKS="$@" +} + function _pkgMountBindDir() { test "$1" != "$2" || return 0 @@ -61,26 +156,38 @@ function _pkgMountBindDir() function _pkgSetVarsBase { case "$vserver" in - /*) - echo "not supported yet" - exit 1 + ./*|/*) + 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=/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 $PKGDIR/execdir / @@ -96,39 +203,38 @@ function _pkgSetVarsBase function _pkgSetVarsRPM { - case "$vserver" in - /*) - echo "not supported yet" - exit 1 - ;; - - *) - findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm - findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state + if test "$PKGDIR"; then + findDir RPMETCDIR $PKGDIR/rpmetc $PKGDIR/base/rpm/etc /etc/rpm + findDir RPMSTATEDIR $PKGDIR/rpmstate $PKGDIR/base/rpm/state - findDir RPMLIBDIR $PKGDIR/rpmlib / + findDir RPMLIBDIR $PKGDIR/rpmlib / - RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR") - RPMETCDIR=$(getPhysicalDir "$RPMETCDIR") - ;; - esac + else + findDir RPMETCDIR "$VDIR"/etc/rpm /etc/rpm + findDir RPMSTATEDIR "$VDIR"/var/lib/rpm + RPMLIBDIR=/ + fi + + RPMSTATEDIR=$(getPhysicalDir "$RPMSTATEDIR") + RPMETCDIR=$(getPhysicalDir "$RPMETCDIR") } function _pkgSetVarsApt { - case "$vserver" in - /*) - echo "not supported yet" - exit 1 - ;; - - *) - 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 $PKGDIR/base/apt/archives /var/cache/apt/archives - ;; - esac + if test "$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 "$APT_CONFIG" || export APT_CONFIG } function _pkgMountBase @@ -146,8 +252,11 @@ function _pkgMountRPM _pkgMountBindDir "$RPMETCDIR" /etc/rpm test "$RPMLIBDIR" = "/" || _pkgMountBindDir "$RPMLIBDIR" /usr/lib/rpm - "$_SECURE_MOUNT" "$VDIR" "$RPMSTATEDIR" "$_rpmdb_mntpoint" + "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint" test -z "$WORKAROUND_106057" || mount -n --bind "$RPMSTATEDIR" "$_rpmdb_mntpoint" + + test -e "$VDIR"/proc/self/status || \ + "$_SECURE_MOUNT" --chroot "$VDIR" -n --secure -t proc none /proc } function _pkgSetEnvBase @@ -185,7 +294,7 @@ function pkgInit case "$i" in rpm) _pkgSetVarsRPM;; apt) _pkgSetVarsApt;; - *) echo "Unknown packaging flavor"; exit 1;; + *) echo "Unknown packaging flavor" >&2; exit 1;; esac done @@ -209,35 +318,404 @@ function pkgInit _PKG_VSERVER=$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 - local var=$1 + declare -a _tmp=() for i in $CONFDIR/*; do test -d "$i" || continue test ! -e "$i"/disabled || continue test -d "$i"/vdir || continue + case "$i" in + *.~*~) continue;; + esac - eval "$var=\"$var ${i##$CONFDIR/}\"" + _tmp=( "${_tmp[@]}" "${i##$CONFDIR/}") done + + eval $1='( "${_tmp[@]}" )' } +## Usage: getVserverCtx [ []] +## Returns: 0 iff vserver is running +function getVserverStatus +{ + test -r "$1"/run || return 1 + + 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 ) + let _tmp=_tmp+0 + eval "$3"=\$_tmp + + if test "$_tmp" = 0; then + local runfile=$($_READLINK "$1/run") + test -z "$4" || rm -f "$runfile" + return 1 + fi + + return 0 +} + +## Usage: isCtxRunning +function isCtxRunning +{ + local _tmp=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$1" | $_WC -l ) + test $_tmp -gt 0 +} + +## Usage: isVserverRunning [] function isVserverRunning { - local vdir=$1 - test -r "$vdir/run" || return 1 + local ctx procnum - local ctx - read ctx <"$vdir"/run || { echo "Failed to read ctx information" >&2; return 0; } + getVserverStatus "$1" ctx procnum 1 || return 1 + test $procnum != 0 || return 1 + test -z "$2" || eval "$2"=\$ctx + return 0 +} + +## Called as 'getFileValue ' +function getFileValue +{ + test -r "$2" || return 0 + eval read "$1" <"$2" +} + +## Called as 'getFileArray ' +function getFileArray +{ + test -r "$2" || return 1 - local cnt=$($_VPS ax | $_AWK '{print $2}' | $_GREP -x "$ctx" | $_WC -l ) + local IFS=$_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 - if test $cnt = 0; then - ## Remove old lock-file - rm -f $(readlink "$vdir/run") + test -z "$x_failed" +} + +## Usage: isKernelAPI [] +function isKernelAPI +{ + local api=$($_VSERVER_INFO - APIVER) || api=0 + test $[ $api ] -${2:-ge} $[ $1 ] +} + +## Usage: callInNamespace * +function callInNamespace +{ + local ctx= + + isAvoidNamespace "$1" || \ + ctx=$( $_VSERVER_INFO "$1" CONTEXT t ) || ctx= + + shift + if test "$ctx"; then + $_VNAMESPACE --enter "$ctx" -- "$@" + else + "$@" + fi +} + +## Usage: pkgmgmt.guessStyle +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 - return 0 + echo $"Can not determine packagemanagement style" >&2 + return 1 + fi + + eval $2=\$style + return 0 +} + +## Usage: pkgmgmt.isInternal +## returns true iff is configured for internal packagemanagement +## A typical application is +## | is_external= +## | pkgmgmt.isInternal "$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 [] +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 [