Date: Tue, 28 Nov 2000 17:34:52 +0100 From: Stijn Hoop <stijn@win.tue.nl> To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Cc: ports@freebsd.org Subject: Re: Upgrade hack idea Message-ID: <20001128173452.A94211@pcwin002.win.tue.nl> In-Reply-To: <200011272051.PAA96852@khavrinen.lcs.mit.edu>; from wollman@khavrinen.lcs.mit.edu on Mon, Nov 27, 2000 at 03:51:56PM -0500 References: <200011272051.PAA96852@khavrinen.lcs.mit.edu>
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Hi,
On Mon, Nov 27, 2000 at 03:51:56PM -0500, Garrett Wollman wrote:
> I just did an upgrade from libpng.so.3 to libpng.so.4 on one of my
> machines. I did not want to recompile the client applications, and I
> did want to keep some record of the installation of this library and
> its dependencies so I remember to delete it when I do recompile those
> clients.
>
> I went through the following steps, which seem to be fairly
> automatable, and would make a nice script hack (on the level of
> `save_shared_libraries png-1.0.5 png-compat-1.0.5').
[snip procedure]
I took your idea and automated it. Attached is my updateport script
that takes these exact steps. Before running it, you need to create
${PREFIX}/lib/compat (for the port, this usually means /usr/X11R6 and
/usr/local) and add it to /etc/rc.conf in the ${ldconfig_path} variable.
The one thing this script doesn't do: it doesn't handle updating dependencies
at the same time. So if port #1 depends on an update of port #2, and you
run portupdate port #1, you'll *install* the new version of port #2, not
update it. You'd have to run updateport port #2 first.
I suppose this idea really needs to be in bsd.port.mk, but the script is older
than your idea, I just updated it and thought that this could be handy for
others. It could also be updated to use Maxim's new information in /var/db/pkg
as to the origin of a package, but I don't have the right bsd.port.mk now
so I couldn't test that. For now it guesses the old version of a port from
the information in /var/db/pkg.
Note that I only tested it with your shared library idea *ONCE* on
print/gnomeprint, upgraded from under gnumeric. This worked like a charm
but YMMV of course. Warning, alpha quality code, here be dragons, etc.
Regards,
--Stijn
--oyUTqETQ0mS9luUI
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#!/bin/sh
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# <stijn@win.tue.nl> wrote this file. As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return. Stijn Hoop
# ----------------------------------------------------------------------------
# Global settings
PORTSDIR=/usr/ports
PKGDBDIR=/var/db/pkg
COMPATLIBDIR=lib/compat
# Check arguments
if [ -z "$1" ]; then
echo "Usage: $0 <port-to-upgrade>"
echo
echo "For example:"
echo " $0 misc/screen"
exit 1
fi
if [ ! -d "${PORTSDIR}/$1" ]; then
echo "===> Error: ${PORTSDIR}/$1 not found. Stop."
exit 1
fi
# Figure out the upgrade path
echo "===> Determining installed port version for $1"
cd $PORTSDIR/$1 || exit 1
PORTNAME=`make -V PKGNAMEPREFIX``make -V PORTNAME``make -V PKGNAMESUFFIX`
OLDVERSION=`ls -d ${PKGDBDIR}/${PORTNAME}-[0-9]* 2>/dev/null | \
sed "s/^.*-\(.*\)$/\1/"`
if [ -z $OLDVERSION ]; then
echo "===> No old version of $PORTNAME installed."
exit 1
fi
OLDNAME=${PORTNAME}-${OLDVERSION}
NEWVERSION=`make -V PORTVERSION``make -V _SUF1``make -V _SUF2`
NEWNAME=`make -V PKGNAME`
if [ $NEWNAME = $OLDNAME ]; then
echo "===> ${PORTNAME} is up to date (at version $OLDVERSION)."
exit 2
fi
# For shared library compatability
PREFIX=`make -V PREFIX`
COMPATNAME=${PORTNAME}-compat-${OLDVERSION}
# Figure out if the port installs shared libraries
if [ ! -z `make -V INSTALLS_SHLIB` ]; then
SHLIB_SAVE=
# Determine upgraded libraries
NEWLIBS=`grep '\.so\.' pkg-plist | sort`
for i in $NEWLIBS; do
NEWLIBNAME=`echo $i | sed "s/\.[0-9][0-9]*$//"`
NEWLIBVERSION=`echo $i | sed "s/^.*\.\([0-9][0-9]*\)$/\1/"`
OLDLIBNAME=`grep "$NEWLIBNAME\." \
${PKGDBDIR}/${OLDNAME}/+CONTENTS`
OLDLIBVERSION=`echo ${OLDLIBNAME} | \
sed "s/^.*\.\([0-9][0-9]*\)$/\1/"`
if [ ! -z $OLDLIBVERSION ]; then
if [ $OLDLIBVERSION != $NEWLIBVERSION ]; then
# An incompatible shared library version
SHLIB_SAVE="${SHLIB_SAVE} ${OLDLIBNAME}"
fi
fi
done
# Now determine libraries that aren't in the new port anymore, and
# save them too
OLDLIBS=`grep '\.so\.' ${PKGDBDIR}/${OLDNAME}/+CONTENTS | sort`
for i in $OLDLIBS; do
OLDLIBNAME=`echo $i | sed "s/\.[0-9][0-9]*$//"`
if ! grep $OLDLIBNAME pkg-plist >/dev/null; then
SHLIB_SAVE="${SHLIB_SAVE} $i"
fi
done
else
SHLIB_SAVE=
fi
# Ask for confirmation for now, this script is still not well tested.
echo "===> Upgrading ${OLDNAME} to ${NEWNAME}"
if [ ! -z "$SHLIB_SAVE" ]; then
echo " WARNING: this will upgrade shared libraries, which other"
echo " programs may depend on! Doing this automatically is not"
echo " always guaranteed to yield usable results."
fi
read -p "===> Are you sure you want to do this? [y/n] " ANS
if [ "x$ANS" != "xyes" -a "x$ANS" != "xy" ]; then
echo "===> Upgrade cancelled."
exit 1;
fi
# Save the old package metadata for later use
cp -rp ${PKGDBDIR}/${OLDNAME} ${PKGDBDIR}/${COMPATNAME}
if [ ! -z "$SHLIB_SAVE" ]; then
# Build a new +CONTENTS for the compat package, containing
# just the shared libraries.
CONTENTS=`mktemp -t updateport`
if [ $? -ne 0 ]; then
echo "$0: Can't create temporary file."
exit 1
fi
echo "@name ${COMPATNAME}" >> $CONTENTS
echo "@cwd ${PREFIX}" >> $CONTENTS
for i in $SHLIB_SAVE; do
cp -p ${PREFIX}/$i ${PREFIX}/${COMPATLIBDIR}
echo $i | sed "s#lib/#${COMPATLIBDIR}/#" >> $CONTENTS
echo "@comment MD5:"`md5 -q ${PREFIX}/$i` >> $CONTENTS
done
echo "@unexec ldconfig -R" >> $CONTENTS
mv -f $CONTENTS ${PKGDBDIR}/${COMPATNAME}/+CONTENTS
chmod a+r ${PKGDBDIR}/${COMPATNAME}/+CONTENTS
ldconfig -m ${PREFIX}/${COMPATLIBDIR}
fi
# Upgrade the port (building it if necessary)
make || exit 1
pkg_delete -f ${OLDNAME} || exit 1
make install || exit 1
# Update dependencies
echo "===> Updating dependencies from ${OLDNAME} to ${NEWNAME}"
if [ -e ${PKGDBDIR}/${COMPATNAME}/+REQUIRED_BY ]; then
if [ -z "$SHLIB_SAVE" ]; then
# Let's just hope we are binary compatible...
REPLACE=${NEWNAME}
else
# Change the dependencies to use compat package
REPLACE=${COMPATNAME}
fi
for i in `cat ${PKGDBDIR}/${COMPATNAME}/+REQUIRED_BY`; do
if [ -e ${PKGDBDIR}/$i/+CONTENTS ]; then
perl -pi -e "s/${OLDNAME}/${REPLACE}/g" \
${PKGDBDIR}/$i/+CONTENTS
fi
done
if [ -z "$SHLIB_SAVE" ]; then
cp ${PKGDBDIR}/${COMPATNAME}/+REQUIRED_BY \
${PKGDBDIR}/${REPLACE}/+REQUIRED_BY
fi
fi
# Remove the compat 'package' if we're not installing a new shared library
if [ -z "$SHLIB_SAVE" ]; then
rm -rf ${PKGDBDIR}/${COMPATNAME}
else
echo "===> The old shared libraries (if any) were saved in a"
echo " compatability 'package' named ${COMPATNAME} for"
echo " your convenience."
fi
--oyUTqETQ0mS9luUI--
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