3 # Common functions for build scripts used by various packages
4 # incorporated (e.g., build, bootcd, nodeimage, sliceimage)
6 # Marc E. Fiuczynski <mef@cs.princeton.edu>
7 # Copyright (C) 2007 The Trustees of Princeton University
8 # Thierry Parmentelat <thierry.parmentelat@inria.fr> INRIA
10 # supported distros f12 f14 f16 f18 f20
11 # and debians/ubuntus to a lesser extent
13 # for locating pkgs.py
16 # old guests have e.g. mount in /bin but this is no longer part of
17 # the standard PATH in recent hosts after usrmove, so let's keep it simple
18 export PATH=$PATH:/bin:/sbin
20 # would be much simpler if enter-lxc-namespace was looking along a PATH...
21 function bin_in_container () {
24 for path in $(echo $PATH | sed -e s,:, ); do
25 [ -f /vservers/$lxc/$path/$binary ] && { echo $path/$binary; return; }
26 [ -f /vservers/$lxc/rootfs/$path/$binary ] && { echo $path/$binary; return; }
28 echo bin_in_container_cannot_find_$binary
31 # returns 'Fedora' or 'CentOS' for now
32 function pl_getDistro() {
33 if [ -f "/etc/redhat-release" ] ; then
34 distro=$(awk ' { print $1 } ' /etc/redhat-release)
35 case $distro in Scientific*) distro="SL" ; esac
36 elif [ -f /etc/lsb-release ] ; then
38 echo $DISTRIB_CODENAME
39 elif [ -f /etc/debian_version ] ; then
40 case $(cat /etc/debian_version) in
41 6.*) distro=squeeze ;;
43 *) distro=unknown.debian.in.build.common ;;
46 [ -z "$distro" ] && { echo "build.common.pl_getDistro-unknown"; exit 1; }
51 # returns something like 8, 10, or 5.3
52 function pl_getRelease() {
53 if [ -f "/etc/redhat-release" ] ; then
54 release=$(awk ' { if ($1=="Fedora" && $2=="Core") print $4 ; if (($1=="Fedora" && $2!="Core")||$1=="CentOS") print $3 ; if ($1=="Scientific") print $4 } ' /etc/redhat-release)
56 echo "build.common.pl_getRelease-unknown"
59 # keep only the major number
60 echo "$release" | cut -d. -f1
64 # returns distro shortname, something like 'f8' or 'centos5'
65 function pl_getReleaseName () {
80 releasename=sl$release
82 squeeze|wheezy|oneiric|precise|quantal|raring|saucy)
86 releasename="unknown-name-for-${pl_DISTRO}-please-edit-build.common"
87 echo 1>&2 "build.common: WARNING - releasename not set for distro=$distro"
95 # yum exclusions are now defined in yumexclude.pkgs
96 # so they can now depend both on the linux distro and the pl distro
97 function pl_yumexclude () {
102 # search for file "yumexclude.pkgs"
103 yumexclude_file=$(pl_locateDistroFile $builddir $pldistro "yumexclude.pkgs")
105 # check if pkgs.py is in PATH
106 type -p pkgs.py >& /dev/null || export PATH=$builddir:$PATH
109 pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro $keyword $yumexclude_file || \
110 { echo pl_yumexclude failed with fcdistro=$fcdistro and pldistro=$pldistro; return 1 ; }
113 # <> fcdistro pldistro builddir
114 # node side : use the 'nodeyumexclude' keywork in yumexclude.pkgs
115 function pl_nodeyumexclude () { pl_yumexclude 'nodeyumexclude' "$@" ; }
116 # server side : use the 'plcyumexclude' keywork in yumexclude.pkgs
117 function pl_plcyumexclude () { pl_yumexclude 'plcyumexclude' "$@" ; }
120 # figure out which redhat distro we are using (fedora, centos, redhat)
121 pl_DISTRO=$(pl_getDistro)
123 # select basearch of the host devel environment - protected for macos for local tests
124 # try arch for testing stuff on a mac
125 pl_DISTRO_ARCH=$(uname -i 2>/dev/null || arch 2> /dev/null || echo unknownarch)
127 # the release number (plain number)
128 pl_DISTRO_RELEASE=$(pl_getRelease)
130 # the release name - something like 'f8' or 'sl6'
131 pl_DISTRO_NAME=$(pl_getReleaseName $pl_DISTRO $pl_DISTRO_RELEASE)
133 # get path to appropriate yumgroups.xml file
134 # Thierry: quick & dirty improvement
135 # this file is updated by the toplevel build, from the .pkgs files
136 pl_DISTRO_YUMGROUPS="../../../RPMS/yumgroups.xml"
138 function pl_process_fedora_options () {
141 while getopts "l:r:a:h" opt ; do
144 pl_DISTRO_URL=$OPTARG
145 let shiftcount=$shiftcount+2
148 pl_DISTRO_RELEASE=$OPTARG
149 let shiftcount=$shiftcount+2
152 pl_DISTRO_ARCH=$OPTARG
153 let shiftcount=$shiftcount+2
156 echo "Usage: $0 [OPTION]..."
157 echo " -l url distro mirror location (default: $pl_DISTRO_URL)"
158 echo " -r release distro release number (default: $pl_DISTRO_RELEASE)"
159 echo " -a arch distro architecture (default: $pl_DISTRO_ARCH)"
160 echo "where distro can be either fedora, centos, or redhat"
161 echo " -h This message"
169 ######################################## handling a root image
170 function pl_root_rpm_macros () {
172 %_install_langs C:en_US:en
173 %_netsharedpath /proc:/dev/pts:/usr/share/info
175 %__file_context_path /dev/null
179 function pl_root_makedevs() {
181 # Clean ${vroot}/dev, but only when ${vroot}!=""
182 [ -n $vroot ] && rm -rf $vroot/dev
185 mknod -m 666 $vroot/dev/null c 1 3
186 mknod -m 666 $vroot/dev/zero c 1 5
187 mknod -m 666 $vroot/dev/full c 1 7
188 mknod -m 644 $vroot/dev/random c 1 8
189 mknod -m 644 $vroot/dev/urandom c 1 9
190 mknod -m 666 $vroot/dev/tty c 5 0
191 mknod -m 666 $vroot/dev/ptmx c 5 2
192 # For bash command substitution
193 ln -nsf ../proc/self/fd $vroot/dev/fd
195 # For df and linuxconf
196 touch $vroot/dev/hdv1
199 mkdir -p $vroot/dev/pts
202 mkdir -p $vroot/dev/shm
205 mkdir -p $vroot/dev/net
206 mknod -m 600 $vroot/dev/net/tun c 10 200
208 # For mkinitrd (in case a kernel is being installed)
209 # As well as for loop back mounting within a vm.
210 for i in $(seq 0 255) ; do
211 mknod -m 640 $vroot/dev/loop$i b 7 $i
215 function mkfedora_usage() {
216 echo "Usage: pl_root_mkfedora [OPTION]... basedir pldistro pkgsfile(s)"
217 echo " -l url Fedora mirror location."
218 echo " Defaults are searched in <pldistro>.mirrors"
219 echo " -v Be verbose"
220 echo " -h This message"
221 echo " target selection (defaults based on current build VM context)"
222 echo " -r release Fedora release number (default: $releasever)"
223 echo " -a arch Fedora architecture (default: $basearch)"
227 function pl_root_mkfedora () {
229 echo "* Entering pl_root_mkfedora" "$@"
231 if [ $UID -ne 0 ] ; then
232 echo "Error: You must run this script as root."
239 # Release and architecture to install : defaults to current vm settings or previously parsed fedora_options
240 releasever=$pl_DISTRO_RELEASE
241 basearch=$pl_DISTRO_ARCH
244 while getopts "vh" opt ; do
246 v) verbose=1; set -x ;;
247 h|*) mkfedora_usage ;;
251 shift $(($OPTIND - 1))
252 [[ "$#" -lt 3 ]] && mkfedora_usage
256 vroot=$(cd $vroot && pwd -P)
257 [ -d $vroot ] || mkfedora_usage
260 # parse pkgsfile and add to local vars
261 fcdistro=${pl_DISTRO_NAME}
262 pkgs_packages=$(pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro package $pkgsfile)
263 pkgs_groups=$(pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro group $pkgsfile)
264 # what can get trashed to save space
265 pkgs_junk=$(pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro junk $pkgsfile)
267 pkgs_precious=$(pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro precious $pkgsfile)
268 # formerly related to mkfedora -k : packages to take from our own build
269 # and thus need be excluded frem the stock repos
270 # locate builddir by looking for pkgs.py
271 builddir=$(dirname $(type -p pkgs.py))
272 SUBST_NODEYUMEXCLUDE=$(pl_nodeyumexclude $fcdistro $pldistro $builddir)
273 pkgs_yumexclude=$(pkgs.py -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro yumexclude $pkgsfile | sed -e s,@NODEYUMEXCLUDE@,"$SUBST_NODEYUMEXCLUDE",)
274 # get mirrors if not specified with -l
275 if [ -z "$mirrors" ] ; then
276 mirrorsfile=$(pl_locateDistroFile ../build/ $pldistro "$pldistro.mirrors")
277 # do not sort mirrors, keep order from input
278 mirrors=$(pkgs.py -u -a $pl_DISTRO_ARCH -f $fcdistro -d $pldistro mirror $mirrorsfile)
282 [ -n "$pkgs_yumexclude" ] && yumexclude_line="exclude=$pkgs_yumexclude"
284 echo "$0: candidate mirrors"
285 for mirror in $mirrors ; do
286 echo "* candidate mirror $mirror"
289 # the repo part of the final yum.conf
290 yum_conf_repos=$vroot/xxxmkfedora-repos.confxxx
291 if ! yumconf_mirrors $yum_conf_repos ../build/ $fcdistro "$yumexclude_line" $mirrors ; then
292 echo xxx -- error ; return 1
295 # Do not tolerate errors
298 public_gpg_key=$(yumconf_gpgkey $yum_conf_repos)
300 ## make rpms ignore installing stuff to special fs entries like /proc
301 # Because of https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=52725
302 # you have to use at least one language beside 'C'
303 # Prevent all locales from being installed in reference image
304 mkdir -p $vroot/etc/rpm
305 pl_root_rpm_macros > $vroot/etc/rpm/macros
307 # Trick rpm and yum, who read the real root /etc/rpm/macros file
308 # rather than the one installed in the reference image, despite what
309 # you might expect the --root and --installroot options to mean. Both
310 # programs always read $HOME/.rpmmacros.
311 export HOME=$vroot/tmp
313 pl_root_rpm_macros > $vroot/tmp/.rpmmacros
315 function mkfedora_cleanup () {
316 umount -l $vroot/proc
317 umount -l $vroot/dev/shm
318 umount -l $vroot/dev/pts
321 # Clean up before exiting if anything goes wrong
322 trap "mkfedora_cleanup" ERR INT
324 # Mount in reference image
325 mount -t devpts none $vroot/dev/pts
326 mount -t tmpfs none $vroot/dev/shm
328 mount -t proc none $vroot/proc
330 # Create a /var/lib dirs for yum & rpm
331 mkdir -p $vroot/var/lib/yum
332 mkdir -p $vroot/var/lib/rpm
333 mkdir -p $vroot/usr/share/info
335 # Create a dummy /etc/fstab in reference image
337 cat >$vroot/etc/fstab <<EOF
338 # This fake fstab exists only to please df and linuxconf.
339 /dev/hdv1 / ext2 defaults 1 1
341 cp $vroot/etc/fstab $vroot/etc/mtab
343 # Necessary for some scripts
344 mkdir -p $vroot/etc/sysconfig
345 echo "NETWORKING=yes" > $vroot/etc/sysconfig/network
347 # Initialize RPM database in reference image
348 mkdir -p $vroot/var/lib/rpm
349 rpm --root $vroot --initdb
350 rpm --root $vroot --import $public_gpg_key
352 # Initialize yum in reference image
353 mkdir -p $vroot/var/cache/yum $vroot/var/log
355 # yum.conf is for building only - store in different location than /etc/yum.conf
356 yum_conf=$vroot/etc/mkfedora-yum.conf
357 cat > $yum_conf <<EOF
359 cachedir=/var/cache/yum
361 logfile=/var/log/yum.log
364 distroverpkg=redhat-release
370 # Prevent yum-2.4 from loading additional repository definitions
371 # (e.g., from /etc/yum.repos.d/)
375 cat $yum_conf_repos >> $yum_conf
377 # If we are being built as part of an automated RPM build, solve the
378 # bootstrap problem by including any just built packages in the yum
379 # configuration. This cooperates with the PlanetLab build system.
380 if [ -n "$RPM_BUILD_DIR" ] ; then
381 RPM_RPMS_DIR=$(cd $(dirname $RPM_BUILD_DIR)/RPMS && pwd -P)
382 # If run under sudo, allow user to delete the headers/ and
383 # repodata/ directories.
384 if [ -n "$SUDO_USER" ] ; then
385 chown -R $SUDO_USER $RPM_RPMS_DIR
387 cat >> $yum_conf <<EOF
390 name=Building - $basearch - $RPM_RPMS_DIR/
391 baseurl=file://$RPM_RPMS_DIR/
395 echo "========== Dumping $yum_conf"
397 echo "========== EndDump $yum_conf"
400 # yum --help | grep verbose &> /dev/null && yum_options="$yum_options --verbose"
401 yum_options="$yum_options -y"
402 yum_options="$yum_options -c $yum_conf"
403 yum_options="$yum_options --installroot=$vroot"
405 # glibc must be specified explicitly for the correct arch to be
407 echo "* Installing glibc"
408 # ignore yum's return code that is basically undefined
409 yum $yum_options install glibc || :
412 if [ -n "$pkgs_packages" ] ; then
413 echo "* Installing optional packages" $pkgs_packages
414 # ignore yum's return code that is basically undefined
415 echo "* Install options" $vroot $yum_options
416 yum $yum_options install $pkgs_packages || :
417 if ! rpm --root $vroot -q $pkgs_packages >/dev/null ; then
418 echo "* Warning: Missing packages"
419 rpm --root $vroot -q $pkgs_packages | grep "not installed"
423 if [ -n "$pkgs_groups" ] ; then
424 ## call yum sequentially to get finer-grained info on dependencies
425 for group_plus in $pkgs_groups ; do
426 group=$(echo $group_plus | sed -e "s,+++, ,g")
427 echo "* Installing optional group $group"
428 # ignore yum's return code that is basically undefined
429 yum $yum_options groupinstall "$group" || :
433 # formerly in bootcd/prep.sh : to optimize footprint
434 if [ -n "$pkgs_junk" ] ; then
435 echo "* Removing unnecessary junk"
437 # Save precious files
438 [ -n "$pkgs_precious" ] && tar --ignore-failed-read -cpf precious.tar $pkgs_precious
439 # Remove unnecessary junk
440 [ -n "$pkgs_junk" ] && rm -rf $pkgs_junk
441 # Restore precious files
442 [ -n "$pkgs_precious" ] && tar -xpf precious.tar && rm -f precious.tar
449 # NOTE: this hack is for Fedora >= 12.
450 # if kernel-debug is installed, clean it up
451 # we link to our version of kernel/initrd and clean up
452 # kernel-debug manually
453 if rpm --root $vroot --quiet -q kernel-debug ; then
454 echo "* Cleaning up kernel-debug - (workaround for f12)"
456 rm -rf kernel-boot kernel-bootsmp initrd-boot initrd-bootsmp
457 ln -s vmlinuz-*${pldistro}* kernel-boot
458 ln -s vmlinuz-*${pldistro}* kernel-bootsmp
459 ln -s initrd-*${pldistro}* initrd-boot
460 ln -s initrd-*${pldistro}* initrd-bootsmp
461 rpm --root $vroot --nodeps -e kernel-debug || :
465 # ignore yum's return code that is basically undefined
466 yum $yum_options clean all || :
469 rm -f $vroot/var/lib/rpm/__db*
471 # Set time zone to UTC
472 if [ -f $vroot/usr/share/zoneinfo/UTC -a -f $vroot/etc/localtime ] ; then
473 rm -f $vroot/etc/localtime
474 ln -s /usr/share/zoneinfo/UTC $vroot/etc/localtime
477 echo "Dumping current list of rpms in /etc/mkfedora-rpms.txt"
478 chroot $vroot rpm -aq | sort > $vroot/etc/mkfedora-rpms.txt
480 # remove trap handler, as we are about to call it directly.
489 function pl_root_tune_image () {
492 # Disable all services in reference image
493 chroot $root sh -c "/sbin/chkconfig --list | awk '{ print \$1 }' | xargs -i /sbin/chkconfig {} off"
495 # FC2 minilogd starts up during shutdown and makes unmounting
496 # impossible. Just get rid of it.
497 rm -f $root/sbin/minilogd
498 ln -nsf /bin/true $root/sbin/minilogd
500 # This tells the Boot Manager that it is okay to update
501 # /etc/resolv.conf and /etc/hosts whenever the network configuration
502 # changes. Users are free to delete this file.
503 touch $root/etc/AUTO_UPDATE_NET_FILES
506 # Move specified directories out of a src tree into a dst tree, and
507 # then for each moved directory create a symlink in src to dst.
508 function pl_move_dirs() {
515 for datadir in "$@" ; do
516 mkdir -p ${data}${datadir}
517 if [ -d ${root}/${datadir} -a ! -h ${root}/${datadir} ] ; then
518 (cd ${root} && find ./${datadir} | cpio -p -d -u ../${data}/)
520 rm -rf ${root}/${datadir}
521 mkdir -p $(dirname ${root}/${datadir})
522 ln -nsf ${store}/${datadir} ${root}/${datadir}
526 # Construct an image file from given some directory
527 # XXX in the future maybe use livecdtools?
528 function pl_make_image() {
533 # Leave about 100 MB free space and allow for about 20% inode overhead
534 bytes=$((($(du -sb $root | cut -f1) + $extraspace) * 120 / 100))
536 blocks=$(($bytes / $bs))
537 dd bs=$bs count=$blocks if=/dev/zero of=$image
538 mkfs.ext3 -b $bs -j -F $image
540 # Temporarily mount it
541 tmp=$(mktemp -d tmp.XXXXXX)
542 mount -o loop $image $tmp
543 trap "umount $tmp; rmdir $tmp" ERR INT
546 (cd $root && tar cpf - .) | (cd $tmp && tar xpf -)
554 # Fix permissions on tmp directories
555 function pl_fixtmp_permissions() {
557 chmod 1777 $root/tmp $root/usr/tmp $root/var/tmp
560 function pl_fixdirs() {
563 for datadir in datadirs ; do
564 if [ -h ${root}/${datadir} ] ; then
565 rm -f ${root}/${datadir}
566 mkdir -p ${root}/${datadir}
571 ########## .pkgs format
572 # Usage: pl_parsePkgs keyword [-a arch] fcdistro pldistro pkgs-file[..s]
573 # pkgs.py should be found in PATH, like this file build.common
574 # only usage should be for pl_getPackages and pl_getGroups,
575 # which in turn are usednow be in {node,slice}image/build.sh
576 function pl_parsePkgs () {
577 target_arch=$pl_DISTRO_ARCH
579 [ "$1" == "-a" ] && { shift; target_arch="$1"; shift; }
583 echo 1>&2 "pl_parsePkgs: using -a $target_arch -f $fcdistro -d $pldistro $keyword $@"
584 pkgs.py -a $target_arch -f $fcdistro -d $pldistro $keyword "$@"
586 # usage: pl_getPackages [-a arch] fcdistro pldistro pkg-file[..s]
587 function pl_getPackages() { pl_parsePkgs package "$@" ; }
588 function pl_getGroups() { pl_parsePkgs group "$@" ; }
590 ##############################
592 # locates a pldistro-dependant file
593 # tries first in build/<pldistro>/, then in build/planetlab/
594 function pl_locateDistroFile () {
600 # if config dir is missing but a .svnpath or a .gitpath exists, use it to extract the config dir
601 configdir="$builddir/config.${pldistro}"
602 if [ ! -d $configdir ] ; then
603 if [ -f "${configdir}.svnpath" -o -f "${configdir}.gitpath" ] ; then
604 echo 1>&2 "Invoking make to extract remote config.${pldistro}"
605 # we set PLDISTROTAGS here to /dev/null because when dealing with remote distros
606 # at a very early stage (like searching for devel.pkgs even before the build VM is created)
607 # then make screams because it cannot find a mandatory include file
608 # OTOH this mechanism here is not intended to depend on tags specifically
609 make 1>&2 --no-print-directory -C $builddir stage1=true config.${pldistro} PLDISTROTAGS=/dev/null
613 paths="$builddir/config.$pldistro/$pkgsfile $builddir/config.planetlab/$pkgsfile"
614 for path in $paths; do
615 if [ -f $path ] ; then
620 if [ -z "$pkgspath" ] ; then
621 echo 1>&2 "pl_locateDistroFile - in $(pwd) : cannot locate $pkgsfile in $builddir"
622 echo 1>&2 "candidates were $paths"
623 echo "not-found-by-pl_locateDistroFile"
626 echo 1>&2 "pl_locateDistroFile: using $pkgspath"
632 function yumgroups_from_pkgs () {
638 sedargs="-e s,@FCDISTRO@,$fcdistro,g"
641 <?xml version="1.0"?>
642 <!DOCTYPE comps PUBLIC "-//Red Hat, Inc.//DTD Comps info//EN" "comps.dtd">
646 for pkgsname in $pkgsnames; do
647 pkgsfile=$(pl_locateDistroFile $builddir $pldistro $pkgsname)
648 packages=$(pl_getPackages $fcdistro $pldistro $pkgsfile)
650 groupname=$(pkgs.py groupname $pkgsfile | sed $sedargs)
651 groupdesc=$(pkgs.py groupdesc $pkgsfile | sed $sedargs)
653 if [ -z "$groupname" -o -z "$groupdesc" ] ; then
654 echo "Cannot find groupname: and groupdesc: in $pkgsfile -- skipped" 1>&2
658 cat << __group_header
660 <id>$(echo $groupname|tr A-Z a-z)</id>
661 <name>$groupname</name>
662 <description>$groupdesc</description>
663 <uservisible>true</uservisible>
666 for package in $packages; do
667 echo "<packagereq type=\"mandatory\">$package</packagereq>"
669 cat << __group_footer
680 function build_fetch () {
681 curl --fail --silent --max-time 60 --output /dev/null "$1"
684 # tries to compute a valid yum.conf for that pldistro from the template in mirroring/
685 # returns 0 and writes <dest_yumconf> on success
686 # returns 1 on failure, in which case <dest_yumconf> is deleted
687 function yumconf_mirrors () {
688 dest_yumconf=$1; shift
691 yumexclude_line="$1" ; shift
694 template=$builddir/mirroring/$fcdistro/yum.repos.d/building.repo.in
696 if [ ! -f $template ] ; then
697 echo "yumconf_mirrors: cannot locate template $template"
702 for mirror in $mirrors; do
703 if yumconf_mirror $dest_yumconf $template "$yumexclude_line" $mirror; then
707 echo 'yumconf_mirrors in build.common : ran out of mirrors -- BAILING OUT'
712 # computes a yum.conf from the template, and checks that all baseurl defined in there are valid repos
713 # returns 0 on success and 1 on failure
714 function yumconf_mirror () {
715 dest_yumconf=$1; shift
717 yumexclude_line="$1" ; shift
720 sed -e "s,@MIRRORURL@,$mirror,g" \
722 $yumexclude_line" $template > $dest_yumconf
724 # capture all lines defining baseurl
725 baseurl_defs=$(grep '^baseurl=' $dest_yumconf)
726 if [ -z "$baseurl_defs" ] ; then
730 for baseurl_def in $baseurl_defs; do
731 baseurl=$(echo $baseurl_def | sed \
733 -e 's,$basearch,'"$pl_DISTRO_ARCH",g)
734 repomd=$baseurl/repodata/repomd.xml
736 echo "* Trying to fetch $repomd"
737 if ! build_fetch $repomd ; then
738 echo "* Failed to fetch $repomd"
742 echo "* Selected mirror $mirror"
746 # from a yum.conf as generated above, computes the gpgkey urls
747 function yumconf_gpgkey () {
748 dest_yumconf=$1; shift
750 values=$(grep -h '^gpgkey=' $dest_yumconf | sed -e s,gpgkey=,, | sed -e 's,$basearch,'"$pl_DISTRO_ARCH",g | sed -e 's, ,\n,g' | sort | uniq | xargs)
751 [ -n "$values" ] || return 1
756 # patches a yum conf to insert an exclude line in each declared repo
757 function yumconf_exclude () {
759 yumexclude_line="$1" ; shift
761 sed -i -e "/#baseurl=.*$/i\\
762 $yumexclude_line" $repo