diff options
Diffstat (limited to 'hooks/maybe-jessie-or-older/extract01.sh')
| -rwxr-xr-x | hooks/maybe-jessie-or-older/extract01.sh | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/hooks/maybe-jessie-or-older/extract01.sh b/hooks/maybe-jessie-or-older/extract01.sh new file mode 100755 index 0000000..9a92d6d --- /dev/null +++ b/hooks/maybe-jessie-or-older/extract01.sh @@ -0,0 +1,57 @@ +#!/bin/sh + +set -eu + +# The jessie-or-older extract01 hook has to be run up to the point where the +# Essential:yes field was removed from the init package (with +# init-system-helpers 1.34). Since the essential packages have only been +# extracted but not installed, we cannot use dpkg-query to find out its +# version. Since /usr/share/doc might be missing due to dpkg --path-exclude, we +# also cannot check whether /usr/share/doc/init/copyright exists. There also +# was a time (before init-system-helpers 1.20) where there was no init package +# at all where we also want to apply this hook. So we just ask apt about the +# candidate version for init-system-helpers. This should only fail in +# situations where there are multiple versions of init-system-helpers in +# different suites. +ver=$(env --chdir="$1" APT_CONFIG="$MMDEBSTRAP_APT_CONFIG" apt-cache show --no-all-versions init-system-helpers 2>/dev/null | sed -ne 's/^Version: \(.*\)$/\1/p' || printf '') +if [ -z "$ver" ]; then + # there is no package called init-system-helpers, so either: + # - this is so old that init-system-helpers didn't exist yet + # - we are in a future where init-system-helpers doesn't exist anymore + # - something strange is going on + # we should only call the hook in the first case + ver=$(env --chdir="$1" APT_CONFIG="$MMDEBSTRAP_APT_CONFIG" apt-cache show --no-all-versions base-files 2>/dev/null | sed -ne 's/^Version: \(.*\)$/\1/p' || printf '') + if [ -z "$ver" ]; then + echo "neither init-system-helpers nor base-files can be installed -- not running jessie-or-older extract01 hook" >&2 + exit 0 + fi + + # Jessie is Debian 8 + if dpkg --compare-versions "$ver" ge 8; then + echo "there is no init-system-helpers but base-files version $ver is >= 8 -- not running jessie-or-older extract01 hook" >&2 + exit 0 + else + echo "there is no init-system-helpers but base-files version $ver is << 8 -- running jessie-or-older extract01 hook" >&2 + fi +else + if dpkg --compare-versions "$ver" ge 1.34; then + echo "init-system-helpers version $ver is >= 1.34 -- not running jessie-or-older extract01 hook" >&2 + exit 0 + else + echo "init-system-helpers version $ver is << 1.34 -- running jessie-or-older extract01 hook" >&2 + fi +fi + +# resolve the script path using several methods in order: +# 1. using dirname -- "$0" +# 2. using ./hooks +# 3. using /usr/share/mmdebstrap/hooks/ +for p in "$(dirname -- "$0")/.." ./hooks /usr/share/mmdebstrap/hooks; do + if [ -x "$p/jessie-or-older/extract00.sh" ] && [ -x "$p/jessie-or-older/extract01.sh" ]; then + "$p/jessie-or-older/extract01.sh" "$1" + exit 0 + fi +done + +echo "cannot find jessie-or-older hook anywhere" >&2 +exit 1 |