use heuristic to detect meta package
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josch
parent
57a0241b09
commit
dcbc17a1c9
2 changed files with 88 additions and 23 deletions
107
findunusedbd.sh
107
findunusedbd.sh
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@ -3,6 +3,47 @@
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#
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# sbuild --chroot-setup-commands='/home/prebuildcmd.sh chroot-setup' --pre-realbuild-commands='/home/prebuildcmd.sh pre-realbuild' --post-realbuild-commands='/home/prebuildcmd.sh post-realbuild'
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get_metaset() {
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name=$1
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ver=$2
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ismeta="no"
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# now run all tests for meta package and skip to the end if package was
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# found to be a meta package by one of the methods
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# check for tag role::dummy and role::metapackage
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if [ $ismeta = "no" ]; then
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# we need grep-dctrl because the Tag field can be multi-line
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if apt-cache show --no-all-versions "${name}=${ver}" \
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| grep-dctrl -P "" -s Tag -n \
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| sed 's/, /\n/g; s/[, ]//g;' \
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| egrep '^(role::metapackage|role::dummy)$'; then
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ismeta="yes"
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fi
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fi
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# check if there is any regular file in the package besides /usr/share/doc
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if [ $ismeta = "no" ]; then
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apt-get download "${name}=${ver}"
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mkdir "$name"
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dpkg -x ${name}_${ver}_*.deb $name
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if [ -d ${name}/usr/share/doc ]; then
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rm -r ${name}/usr/share/doc
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fi
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# check if besides /usr/share/doc there is any regular file
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# in this package (symlinks do not count)
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if [ `find tmp -type f | wc -l` -eq 0 ]; then
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ismeta="yes"
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fi
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rm -r ${name}_${ver}_*.deb $name
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fi
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if [ $ismeta = "yes" ]; then
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# retrieve all its unversioned dependencies
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# we already require grep-dctrl above so we can use it now too
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apt-cache depends --important --installed "${name}=${ver}" \
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| awk ' $1 ~ /\|?(Depends|PreDepends):/ { print $2; }'
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fi
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# output this package as well in any case
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echo $name
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}
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if [ "$#" -eq 1 ]; then
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tmpdir="$1"
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# once something is written to the fifo, it indicates that fatrace should start
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@ -29,7 +70,6 @@ if [ "$#" -eq 1 ]; then
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# now get all packages in /tmp/pkglists that have files that never appear in the collected trace
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while read namever; do
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name=`echo $namever | cut -d '=' -f 1 | cut -d ':' -f 1`
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# FIXME: the following cannot handle dependencies on virtual packages
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if [ -z "`comm -12 "${tmpdir}/accessed.log" "${tmpdir}/$namever"`" ] \
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&& grep --line-regexp "$name" "${tmpdir}/sbuild-dummy-depends" > /dev/null; then
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echo $namever
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@ -55,18 +95,30 @@ elif [ "$#" -eq 2 ]; then
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name=$1
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ver=$2
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if grep --line-regexp "${name}=${ver}" "${tmpdir}/bdselection.list"; then
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dpkg -L $name | sort > "${tmpdir}/${name}=${ver}"
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# if the package contains no other files than in /usr/share/doc
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# or if all the other files are symlinks
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# or if it is tagged role::dummy
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# or if it is tagged role::metapackage
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# then it is a meta package and we append to the file it contains
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# the files contained by the packages it depends upon
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get_metaset $name $ver | sort | uniq \
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| while read pkgname; do
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dpkg --listfiles $pkgname
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done | sort | uniq \
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> "${tmpdir}/${name}=${ver}"
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fi
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done
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# output the dependencies of the sbuild dummy package
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# find sbuild dummy package name
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dpkg --get-selections | awk '{ print $1; }' \
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| grep sbuild-build-depends \
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| grep -v sbuild-build-depends-core-dummy \
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| grep -v sbuild-build-depends-essential-dummy \
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| grep -v sbuild-build-depends-lintian-dummy \
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| xargs -I {} dpkg-query --showformat='${Depends}\n' --show {} \
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| sed 's/, \+/\n/'g \
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| sed 's/\([a-zA-Z0-9][a-zA-Z0-9+.-]*\).*/\1/' \
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| grep -v sbuild-build-depends-lintian-dummy`
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# output the dependencies of the sbuild dummy package
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# we use apt to show dependencies because we do not want
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# disjunctions or purely virtual packages to be in the output
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apt-cache depends --important --installed $dummypkgname \
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| awk ' $1 ~ /\|?(Depends|PreDepends):/ { print $2; }' \
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| sort \
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| uniq \
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> "${tmpdir}/sbuild-dummy-depends"
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@ -89,22 +141,33 @@ elif [ "$#" -eq 2 ]; then
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;;
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equivs)
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namever="$2"
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# create and install a package with same name and version but without dependencies
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# removing Source: field because of bug#751942
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apt-cache show --no-all-versions $namever \
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| grep -v "^Pre-Depends:" \
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| grep -v "^Depends:" \
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| grep -v "^Recommends:" \
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| grep -v "^Suggests:" \
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| grep -v "^Conflicts:" \
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| grep -v "^Breaks:" \
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| grep -v "^Provides:" \
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| grep -v "^Replaces:" \
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| grep -v "^Source:" \
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| equivs-build -
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name=`echo $namever | cut -d '=' -f 1 | cut -d ':' -f 1`
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# we use a wildcard because there should only be a single file anyways
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dpkg -i ${name}_*.deb
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ver=`echo $namever | cut -d '=' -f 2`
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# if the package contains no other files than in /usr/share/doc
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# or if all the other files are symlinks
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# or if it is tagged role::dummy
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# or if it is tagged role::metapackage
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# then it is a meta package and we also create fake equivs
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# packages for all packages it depends upon
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get_metaset $name $ver | sort | uniq \
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| while read pkgname; do
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# create and install a package with same name and version but without dependencies
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# removing Source: field because of bug#751942
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apt-cache show --no-all-versions $pkgname \
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| grep -v "^Pre-Depends:" \
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| grep -v "^Depends:" \
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| grep -v "^Recommends:" \
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| grep -v "^Suggests:" \
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| grep -v "^Conflicts:" \
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| grep -v "^Breaks:" \
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| grep -v "^Provides:" \
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| grep -v "^Replaces:" \
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| grep -v "^Source:" \
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| equivs-build -
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# we use a wildcard because there should only be a single file anyways
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dpkg -i ${pkgname}_*.deb
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rm ${pkgname}_*.deb
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done
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;;
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*)
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echo "invalid argument: $1" >&2
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4
run.sh
4
run.sh
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@ -68,8 +68,10 @@ check () {
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fi
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while read bd; do
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# now run sbuild with "findunusedbd.sh equivs" creating a fake equivs package
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# we need to run it as a pre-realbuild-commands hook because it needs all
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# dependencies to be installed
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sbuild --$archall --quiet \
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--chroot-setup-commands="/home/findunusedbd.sh equivs $bd" \
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--pre-realbuild-commands="/home/findunusedbd.sh equivs $bd" \
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"$dscname"
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if [ $? -eq 0 ]; then
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echo $bd >> "${unusedbdname}".real
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