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