diff options
Diffstat (limited to 'debian/apt.auto-removal.sh')
| -rw-r--r-- | debian/apt.auto-removal.sh | 74 |
1 files changed, 24 insertions, 50 deletions
diff --git a/debian/apt.auto-removal.sh b/debian/apt.auto-removal.sh index 807c6f745..f615fa677 100644 --- a/debian/apt.auto-removal.sh +++ b/debian/apt.auto-removal.sh @@ -1,72 +1,45 @@ #!/bin/sh set -e - -# Author: Steve Langasek <steve.langasek@canonical.com> -# # Mark as not-for-autoremoval those kernel packages that are: # - the currently booted version # - the kernel version we've been called for -# - the latest kernel version (determined using rules copied from the grub -# package for deciding which kernel to boot) -# - the second-latest kernel version, if the booted kernel version is -# already the latest and this script is called for that same version, -# to ensure a fallback remains available in the event the newly-installed -# kernel at this ABI fails to boot -# In the common case, this results in exactly two kernels saved, but it can -# result in three kernels being saved. It's better to err on the side of -# saving too many kernels than saving too few. +# - the latest kernel version (as determined by debian version number) +# - the second-latest kernel version # -# We generate this list and save it to /etc/apt/apt.conf.d instead of marking -# packages in the database because this runs from a postinst script, and apt -# will overwrite the db when it exits. - +# In the common case this results in two kernels saved (booted into the +# second-latest kernel, we install the latest kernel in an upgrade), but +# can save up to four. Kernel refers here to a distinct release, which can +# potentially be installed in multiple flavours counting as one kernel. eval $(apt-config shell APT_CONF_D Dir::Etc::parts/d) test -n "${APT_CONF_D}" || APT_CONF_D="/etc/apt/apt.conf.d" -config_file=${APT_CONF_D}/01autoremove-kernels +config_file="${APT_CONF_D}/01autoremove-kernels" eval $(apt-config shell DPKG Dir::bin::dpkg/f) test -n "$DPKG" || DPKG="/usr/bin/dpkg" -installed_version="$1" -running_version="$(uname -r)" +list="$(${DPKG} -l | awk '/^[ih][^nc][ ]+(linux|kfreebsd|gnumach)-image-[0-9]+\./ && $2 !~ /-dbg$/ && $2 !~ /-dbgsym$/ { print $2,$3; }' \ + | sed -e 's#^\(linux\|kfreebsd\|gnumach\)-image-##' -e 's#:[^:]\+ # #')" +debverlist="$(echo "$list" | cut -d' ' -f 2 | sort --unique --reverse --version-sort)" -version_test_gt () -{ - local version_test_gt_sedexp="s/[._-]\(pre\|rc\|test\|git\|old\|trunk\)/~\1/g" - local version_a="`echo "$1" | sed -e "$version_test_gt_sedexp"`" - local version_b="`echo "$2" | sed -e "$version_test_gt_sedexp"`" - $DPKG --compare-versions "$version_a" gt "$version_b" - return "$?" -} - -list="$(${DPKG} -l | awk '/^ii[ ]+(linux|kfreebsd|gnumach)-image-[0-9]+\./ && $2 !~ /-dbg$/ { print $2 }' | sed -e 's#\(linux\|kfreebsd\|gnumach\)-image-##')" - -latest_version="" -previous_version="" -for i in $list; do - if version_test_gt "$i" "$latest_version"; then - previous_version="$latest_version" - latest_version="$i" - elif version_test_gt "$i" "$previous_version"; then - previous_version="$i" - fi -done - -if [ "$latest_version" != "$installed_version" ] \ - || [ "$latest_version" != "$running_version" ] \ - || [ "$installed_version" != "$running_version" ] -then - # We have at least two kernels that we have reason to think the - # user wants, so don't save the second-newest version. - previous_version= +if [ -n "$1" ]; then + installed_version="$(echo "$list" | awk "\$1 == \"$1\" { print \$2;exit; }")" +fi +unamer="$(uname -r)" +if [ -n "$unamer" ]; then + running_version="$(echo "$list" | awk "\$1 == \"$unamer\" { print \$2;exit; }")" fi +latest_version="$(echo "$debverlist" | sed -n 1p)" +previous_version="$(echo "$debverlist" | sed -n 2p)" -kernels="$(echo "$latest_version +debkernels="$(echo "$latest_version $installed_version $running_version -$previous_version" | sort -u | sed -e 's#\.#\\.#g' )" +$previous_version" | sort -u | sed -e '/^$/ d')" +kernels="$( (echo "$1 +$unamer"; for deb in $debkernels; do echo "$list" | awk "\$2 == \"$deb\" { print \$1; }"; done; ) \ + | sed -e 's#\.#\\.#g' -e '/^$/ d' | sort -u)" generateconfig() { cat <<EOF @@ -83,3 +56,4 @@ EOF } generateconfig > "${config_file}.dpkg-new" mv "${config_file}.dpkg-new" "$config_file" +chmod 444 "$config_file" |