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118 lines
4.3 KiB
Bash
118 lines
4.3 KiB
Bash
#!/bin/sh -ex
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# start this script without arguments and then start sbuild as:
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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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if [ "$#" -eq 1 ]; then
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tmpdir="$1"
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# once something is written to the fifo, it indicates that fatrace should start
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SCHROOT_SESSION_ID=`cat "${tmpdir}/myfifo"`;
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# change to the schroot mount
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cd /var/lib/schroot/mount/$SCHROOT_SESSION_ID
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# start fatrace in the mounted directory
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fatrace --current-mount > "${tmpdir}/fatrace.log" &
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FATRACE_PID=$!
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# give fatrace some time to set up (value is arbitrary)
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sleep 5
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# signal that fatrace was started
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echo > "${tmpdir}/myfifo"
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# wait for build to finish
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cat "${tmpdir}/myfifo" > /dev/null
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kill $FATRACE_PID
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# clean up the fatrace log to only include unique paths
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sed 's/\/var\/lib\/schroot\/mount\/[^\/]\+//' "${tmpdir}/fatrace.log" \
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| awk '{ print $3; }' \
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| grep -v ^/build \
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| sort \
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| uniq \
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> "${tmpdir}/accessed.log"
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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 $namever
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fi
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done > "${tmpdir}/unneededdepends.list" < "${tmpdir}/bdselection.list"
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# signal that the script is about to exit
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echo > "${tmpdir}/myfifo"
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elif [ "$#" -eq 2 ]; then
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case "$1" in
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chroot-setup)
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tmpdir="$2"
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dpkg --list | awk '$1 == "ii" { print $2"="$3 }' | sort > "${tmpdir}/initialselection.list"
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;;
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pre-realbuild)
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tmpdir="$2"
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# get the current selection so that the parent script can find the additional packages that were installed
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dpkg --list | awk '$1 == "ii" { print $2"="$3 }' | sort > "${tmpdir}/fullselection.list"
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# get all packages that were installed on top of the base packages
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comm -13 "${tmpdir}/initialselection.list" "${tmpdir}/fullselection.list" > "${tmpdir}/bdselection.list"
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# output the files belonging to all packages
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dpkg --list | awk '$1 == "ii" { print $2, $3 }' | while read namever; do
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set -- $namever
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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 $name > "${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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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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> "${tmpdir}/sbuild-dummy-depends"
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# output the schroot id to start tracing
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echo $SCHROOT_SESSION_ID > "${tmpdir}/myfifo"
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# wait for fatrace to be forked
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cat "${tmpdir}/myfifo" > /dev/null
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;;
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post-realbuild)
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tmpdir="$2"
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# signal that the build is done
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echo > "${tmpdir}/myfifo"
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# wait for the parent process to finish and exit
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# if we do not do this then schroot cannot umount
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# because our script will still have the directory as
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# its working dir
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cat "${tmpdir}/myfifo" > /dev/null
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# give it some time to really exit (value is arbitrary)
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sleep 1
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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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;;
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*)
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echo "invalid argument: $1" >&2
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;;
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esac
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else
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echo "usage: " >&2
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echo " $0 tmpdir"
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echo " $0 [chroot-setup|pre-realbuild|post-realbuild] tmpdir"
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echo " $0 equivs pkgname"
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exit 1
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fi
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