#!/bin/sh set -e export LC_ALL=C type=$1 preversion=$2 linux_compare_versions () { verA=$(($(echo "$1" | sed 's/^\([0-9]*\.[0-9]*\)\([^.0-9]\|$\)/\1.0\2/; s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 10000 + \2 \* 100 + \3/'))) verB=$(($(echo "$3" | sed 's/^\([0-9]*\.[0-9]*\)\([^.0-9]\|$\)/\1.0\2/; s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 10000 + \2 \* 100 + \3/'))) test $verA -$2 $verB } kfreebsd_compare_versions () { verA=$(($(echo "$1" | sed 's/\([0-9]*\)\.\([0-9]*\).*/\1 \* 100 + \2/'))) verB=$(($(echo "$3" | sed 's/\([0-9]*\)\.\([0-9]*\).*/\1 \* 100 + \2/'))) test $verA -$2 $verB } # Sanity check. # If there are versions of glibc outside of the normal installation # location (/lib, /lib64, etc.) then things may break very badly # as soon as ld.so is replaced by a new version. This check is not # foolproof, but it's pretty accurate. This script ignores libraries # with different sonames, and libraries incompatible with the # to-be-installed ld.so. check_dir () { msg=$1 dir=$2 # Follow symlinks dir=$(readlink -e $dir || true) # Ignore inexistent directories if ! test -d "$dir" ; then return fi # Detect possible candidates files=$(ls $dir | egrep '^(ld|lib(d|c|m|pthread|rt|dl))-2.*.so' 2>/dev/null || true) if test -z "$files" ; then return fi for file in $files ; do lib=$dir/$file # Skip if it is a symlink (as installed by lsb-core) if test -L "$lib" ; then continue fi # Skip if it is the currently dynamic loader if test "$lib" = "$ldfile" ; then continue fi # See if the found libraries are compatible with the system ld.so; # if they aren't, they'll be ignored. Check e_ident, e_type (which # will just be ET_DYN), and e_machine. If a match is found, there # is a risk of breakage. libbytes=`head -c 20 $lib | od -c` if test "$ldbytes" != "$libbytes" ; then continue fi # Binaries owned packages are considered to do the right thing # First try a quick lookup which should catch all cases on a # normal system if echo $libcfiles | grep -q "[ ^]$lib[ $]" ; then continue fi # Slower lookup to confirm if dpkg-query -S "$lib" >/dev/null 2>&1 ; then continue fi # Output an error message and exit echo echo "A copy of the C library was found $msg:" echo " '$lib'" echo "It is not safe to upgrade the C library in this situation;" echo "please remove that copy of the C library or get it out of" echo "'$dir' and try again." echo exit 1 done } if [ -n "$preversion" ] && dpkg --compare-versions "$preversion" lt 2.31-0ubuntu2; then LDCONFIG_NOTRIGGER=y export LDCONFIG_NOTRIGGER ldconfig || ldconfig --verbose fi if [ "$type" != abort-upgrade ] then # Load debconf module if available and usable if [ -f /usr/share/debconf/confmodule ] && \ ( [ "$DEBCONF_USE_CDEBCONF" ] || perl -e "" 2>/dev/null ) ; then . /usr/share/debconf/confmodule USE_DEBCONF=1 fi # See if LD_LIBRARY_PATH contains the traditional /lib, but not the # multiarch path dirs=$(echo $LD_LIBRARY_PATH | sed 's/:/ /g') for dir in $dirs ; do dir=$(readlink -e $dir || true) case "$dir" in /lib) seen_traditional=1 ;; /lib/x86_64-linux-gnu) seen_multiarch=1 ;; esac done if test -n "$seen_traditional" && test -z "$seen_multiarch" ; then echo echo "LD_LIBRARY_PATH contains the traditional /lib directory," echo "but not the multiarch directory /lib/x86_64-linux-gnu." echo "It is not safe to upgrade the C library in this situation;" echo "please remove the /lib/directory from LD_LIBRARY_PATH and" echo "try again." echo exit 1 fi # glibc kernel version check system=`uname -s` if [ "$system" = "Linux" ] then # sanity checking for the appropriate kernel on each architecture. kernel_ver=`uname -r` case ${DPKG_MAINTSCRIPT_ARCH} in *) # The GNU libc requires a >= 3.2 kernel, found in wheezy kernel_ver_min=3.2 kernel_ver_rec=3.2 ;; esac if linux_compare_versions "$kernel_ver" lt $kernel_ver_min then if [ "$USE_DEBCONF" ] then db_version 2.0 db_fset glibc/kernel-too-old seen false db_reset glibc/kernel-too-old db_subst glibc/kernel-too-old kernel_ver $kernel_ver_rec db_input critical glibc/kernel-too-old || true db_go db_stop else echo "ERROR: This version of the GNU libc requires kernel version" echo "$kernel_ver_rec or later. Please upgrade your kernel before installing" echo "glibc." echo fi exit 1 fi if linux_compare_versions "$kernel_ver" lt $kernel_ver_rec then if [ "$USE_DEBCONF" ] then db_version 2.0 db_fset glibc/kernel-not-supported seen false db_reset glibc/kernel-not-supported db_subst glibc/kernel-not-supported kernel_ver $kernel_ver_rec db_input critical glibc/kernel-not-supported || true db_go db_stop else echo "WARNING: This version of the GNU libc requires kernel version" echo "$kernel_ver_rec or later. Older versions might work but are not officially" echo "supported. Please consider upgrading your kernel." echo fi fi elif [ $system = "GNU/kFreeBSD" ] then kernel_ver=`uname -r` kernel_ver_min=8.3 if kfreebsd_compare_versions "$kernel_ver" lt $kernel_ver_min then if [ "$USE_DEBCONF" ] then db_version 2.0 db_version 2.0 db_fset glibc/kernel-too-old seen false db_reset glibc/kernel-too-old db_subst glibc/kernel-too-old kernel_ver $kernel_ver_min db_input critical glibc/kernel-too-old || true db_go db_stop else echo "ERROR: This version of the GNU libc requires kernel version" echo "$kernel_ver_min or later. Please upgrade your kernel before installing" echo "glibc." echo fi exit 1 fi fi fi if [ "$type" = upgrade ] then # Try to detect copies of the libc library in the various places # the dynamic linker uses. ldfile=$(readlink -m /lib64/ld-linux-x86-64.so.2) if test -f "$file"; then ldbytes=$(head -c 20 /lib64/ld-linux-x86-64.so.2 | od -c) else # If the symlink to the dynamic linker is dangling or missing, set # ldbytes to an empty string, the test below will fail and all the # libraries found will be ignored. ldbytes="" fi libcfiles=$(dpkg-query -L ${DPKG_MAINTSCRIPT_PACKAGE}:${DPKG_MAINTSCRIPT_ARCH} 2>/dev/null) dirs="/lib/x86_64-linux-gnu /lib /lib/tls /lib32 /lib64 /usr/local/lib /usr/local/lib32 /usr/local/lib64" for dir in $dirs ; do check_dir "in an unexpected directory" $dir done if test -n "$LD_LIBRARY_PATH"; then dirs=$(echo $LD_LIBRARY_PATH | sed 's/:/ /g') for dir in $dirs ; do check_dir "via LD_LIBRARY_PATH" $dir done fi if test -e /etc/ld.so.conf; then dirs=$(echo $(cat /etc/ld.so.conf)) if test -n "$dirs" ; then for dir in $dirs ; do check_dir "via /etc/ld.so.conf" $dir done fi fi if [ -e /lib/tls/i686/cmov/libc.so.6 ] || [ -e /lib/i686/cmov/libc.so.6 ] ; then status_i686=$(dpkg -s libc6-i686 2>/dev/null | grep ^Status: | sed -e 's/^Status: \(.*\) \(.*\) \(.*\)/\3/g') status_xen=$(dpkg -s libc6-xen 2>/dev/null | grep ^Status: | sed -e 's/^Status: \(.*\) \(.*\) \(.*\)/\3/g') if ([ -z "$status_i686" ] || [ "$status_i686" = "not-installed" ] || [ "$status_i686" = "config-files" ]) && \ ([ -z "$status_xen" ] || [ "$status_xen" = "not-installed" ] || [ "$status_xen" = "config-files" ]); then echo echo "A non-dpkg owned copy of the libc6-i686 package was found." echo "It is not safe to upgrade the C library in this situation;" echo "please remove that copy of the C library and try again." echo exit 1 fi fi if [ -n "$preversion" ] && [ -x "$(which ischroot)" ] && ! ischroot; then # NSS authentication trouble guard if dpkg --compare-versions "$preversion" lt 2.31; then if pidof xscreensaver xlockmore >/dev/null; then if [ "$USE_DEBCONF" ] ; then db_version 2.0 db_reset glibc/disable-screensaver db_input critical glibc/disable-screensaver || true db_go || true else echo "xscreensaver and xlockmore must be restarted before upgrading" echo echo "One or more running instances of xscreensaver or xlockmore have been" echo "detected on this system. Because of incompatible library changes, the" echo "upgrade of the GNU C library will leave you unable to authenticate to" echo "these programs. You should arrange for these programs to be restarted" echo "or stopped before continuing this upgrade, to avoid locking your users" echo "out of their current sessions." echo frontend=`echo "$DEBIAN_FRONTEND" | tr '[:upper:]' '[:lower:]'` if [ "$frontend" = noninteractive ]; then echo "Non-interactive mode, upgrade glibc forcibly" else echo -n "Press a key to continue" read answer fi echo fi fi check="kdm postgresql xdm" # the following substitution processes the check variable # and returns results in the services variable # NSS services check: echo -n "Checking for services that may need to be restarted..." # Only get the ones that are installed, of the same architecture # as libc (or arch all) and configured [ -n "$check" ] && check=$(dpkg-query -W -f='${binary:Package} ${Status} ${Architecture}\n' $check 2> /dev/null | \ grep -E "installed (all|${DPKG_MAINTSCRIPT_ARCH})$" | sed 's/[: ].*//') # some init scripts don't match the package names check=$(echo $check | \ sed -e's/\bat\b/atd/g' \ -e's/\bdovecot-common\b/dovecot/g' \ -e's/\bexim4-base\b/exim4/g' \ -e's/\blpr\b/lpd/g' \ -e's/\blpr-ppd\b/lpd-ppd/g' \ -e's/\bmysql-server\b/mysql/g' \ -e's/\bsasl2-bin\b/saslauthd/g' \ -e's/\bsamba\b/smbd/g' \ -e's/\bpostgresql-common\b/postgresql/g' \ ) echo echo "Checking init scripts..." for service in $check; do invoke-rc.d ${service} status >/dev/null 2>/dev/null && status=0 || status=$? if [ "$status" = "0" ] || [ "$status" = "2" ] ; then services="$service $services" elif [ "$status" = "100" ] ; then echo "WARNING: init script for $service not found." fi done if [ -n "$services" ]; then if [ "$USE_DEBCONF" ] ; then db_version 2.0 db_reset glibc/upgrade db_subst glibc/upgrade services $services if [ "$RELEASE_UPGRADE_MODE" = desktop ]; then db_input medium glibc/upgrade || true else db_input critical glibc/upgrade || true fi db_go || true db_get glibc/upgrade answer=$RET else echo "Do you want to upgrade glibc now?" echo echo "Running services and programs that are using NSS need to be restarted," echo "otherwise they might not be able to do lookup or authentication any more." echo "The installation process is able to restart some services (such as ssh or" echo "telnetd), but other programs cannot be restarted automatically. One such" echo "program that needs manual stopping and restart after the glibc upgrade by" echo "yourself is xdm - because automatic restart might disconnect your active" echo "X11 sessions." echo echo "This script detected the following installed services which must be" echo "stopped before the upgrade: $services" echo echo "If you want to interrupt the upgrade now and continue later, please" echo "answer No to the question below." echo frontend=`echo "$DEBIAN_FRONTEND" | tr '[:upper:]' '[:lower:]'` if [ "$frontend" = noninteractive ]; then echo "Non-interactive mode, upgrade glibc forcibly" answer=true else echo -n "Do you want to upgrade glibc now? [Y/n] " read answer case $answer in Y*|y*) answer=true ;; N*|n*) answer=false ;; *) answer=true ;; esac fi echo fi if [ "x$answer" != "xtrue" ]; then echo "Stopped glibc upgrade. Please retry the upgrade after you have" echo "checked or stopped services by hand." exit 1 fi fi services="" check="apache2 apache apache-ssl apache-perl autofs at" check="$check boa cucipop courier-authdaemon cron cups exim" check="$check exim4-base dovecot-common cucipop incron lprng lpr" check="$check lpr-ppd mysql-server nis openbsd-inetd" check="$check openldapd postgresql-common proftpd postfix postfix-tls" check="$check rsync samba sasl2-bin slapd smail sendmail snmpd ssh" check="$check spamassassin vsftpd wu-ftpd wu-ftpd-academ wwwoffle" check="$check webmin dropbear gdm gdm3" # the following substitution processes the check variable # and returns results in the services variable # NSS services check: echo -n "Checking for services that may need to be restarted..." # Only get the ones that are installed, of the same architecture # as libc (or arch all) and configured [ -n "$check" ] && check=$(dpkg-query -W -f='${binary:Package} ${Status} ${Architecture}\n' $check 2> /dev/null | \ grep -E "installed (all|${DPKG_MAINTSCRIPT_ARCH})$" | sed 's/[: ].*//') # some init scripts don't match the package names check=$(echo $check | \ sed -e's/\bat\b/atd/g' \ -e's/\bdovecot-common\b/dovecot/g' \ -e's/\bexim4-base\b/exim4/g' \ -e's/\blpr\b/lpd/g' \ -e's/\blpr-ppd\b/lpd-ppd/g' \ -e's/\bmysql-server\b/mysql/g' \ -e's/\bsasl2-bin\b/saslauthd/g' \ -e's/\bsamba\b/smbd/g' \ -e's/\bpostgresql-common\b/postgresql/g' \ ) echo echo "Checking init scripts..." for service in $check; do invoke-rc.d ${service} status >/dev/null 2>/dev/null && status=0 || status=$? if [ "$status" = "0" ] || [ "$status" = "2" ] ; then services="$service $services" elif [ "$status" = "100" ] ; then echo "WARNING: init script for $service not found." fi done if [ -n "$services" ]; then if [ "$USE_DEBCONF" ] ; then db_version 2.0 if [ "$RELEASE_UPGRADE_MODE" = desktop ]; then db_input medium libraries/restart-without-asking || true else db_input critical libraries/restart-without-asking || true fi db_go || true db_get libraries/restart-without-asking if [ "$RET" != true ]; then db_reset glibc/restart-services db_set glibc/restart-services "$services" if [ "$RELEASE_UPGRADE_MODE" = desktop ]; then db_input medium glibc/restart-services || true else db_input critical glibc/restart-services || true fi db_go || true db_get glibc/restart-services services="$RET" fi else echo echo "Name Service Switch update in the C Library: post-installation question." echo echo "Running services and programs that are using NSS need to be restarted," echo "otherwise they might not be able to do lookup or authentication any more" echo "(for services such as ssh, this can affect your ability to login)." echo "Note: restarting sshd/telnetd should not affect any existing connections." echo echo "The services detected are: " echo " $services" echo echo "If other services have begun to fail mysteriously after this upgrade, it is" echo "probably necessary to restart them too. We recommend that you reboot your" echo "machine after the upgrade to avoid NSS-related troubles." echo frontend=`echo "$DEBIAN_FRONTEND" | tr '[:upper:]' '[:lower:]'` if [ "$frontend" = noninteractive ]; then echo "Non-interactive mode, restarting services" answer=yes else echo -n "Do you wish to restart services? [Y/n] " read answer case $answer in N*|n*) services="" ;; *) ;; esac fi fi if [ -n "$services" ]; then echo "Stopping some services possibly affected by the upgrade (will be restarted later):" for service in $services; do case "$service" in cron) # See bug (LP: #508083) echo -n " $service: stopping..." if invoke-rc.d ${service} stop > /dev/null 2>&1; then echo "done." echo "$service" >> /var/run/services.need_start else echo "FAILED! ($?)" echo "$service" >> /var/run/services.need_restart fi ;; *) # log service details to allow postinst to handle the # restart. echo "$service" >> /var/run/services.need_restart ;; esac done fi echo else echo "Nothing to restart." fi fi # end upgrading and $preversion lt 2.31 fi # Upgrading # This will keep us from using hwcap libs (optimized) during an # upgrade. touch /etc/ld.so.nohwcap fi if [ -n "$preversion" ]; then if dpkg --compare-versions "$preversion" lt 2.31; then # unconditionally wipe ld.so.cache on major version upgrades; this # makes those upgrades a bit slower, but is less error-prone than # hoping we notice every time the cache format is changed upstream rm -f /etc/ld.so.cache rm -f /var/cache/ldconfig/aux-cache fi fi exit 0