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add hooks/copy-host-apt-sources-and-preferences

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This commit is contained in:
Johannes Schauer Marin Rodrigues 2023-06-17 13:46:32 +02:00
parent 5a6883970a
commit e523741610
Signed by untrusted user: josch
GPG key ID: F2CBA5C78FBD83E1
2 changed files with 87 additions and 0 deletions
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44
hooks/copy-host-apt-sources-and-preferences/customize00.pl Executable file
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#!/usr/bin/perl
#
# This script makes sure that all packages that are installed both locally as
# well as inside the chroot have the same version.
#
# It is implemented in Perl because there are no associative arrays in POSIX
# shell.
use strict;
use warnings;
sub get_pkgs {
my $root = shift;
my %pkgs = ();
open(my $fh, '-|', 'dpkg-query', "--root=$root", '--showformat',
'${binary:Package}=${Version}\n', '--show')
// die "cannot exec dpkg-query";
while (my $line = <$fh>) {
my ($pkg, $ver) = split(/=/, $line, 2);
$pkgs{$pkg} = $ver;
}
close $fh;
if ($? != 0) { die "failed to run dpkg-query" }
return %pkgs;
}
my %pkgs_local = get_pkgs('/');
my %pkgs_chroot = get_pkgs($ARGV[0]);
my @diff = ();
foreach my $pkg (keys %pkgs_chroot) {
next unless exists $pkgs_local{$pkg};
if ($pkgs_local{$pkg} ne $pkgs_chroot{$pkg}) {
push @diff, $pkg;
}
}
if (scalar @diff > 0) {
print STDERR "E: packages from the host and the chroot differ:\n";
foreach my $pkg (@diff) {
print STDERR "E: $pkg $pkgs_local{$pkg} $pkgs_chroot{$pkg}\n";
}
exit 1;
}

43
hooks/copy-host-apt-sources-and-preferences/setup00.sh Executable file
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#!/bin/sh
set -eu
if [ "${MMDEBSTRAP_VERBOSITY:-1}" -ge 3 ]; then
set -x
fi
if [ -n "${MMDEBSTRAP_SUITE:-}" ]; then
if [ "${MMDEBSTRAP_VERBOSITY:-1}" -ge 1 ]; then
echo "W: using a non-empty suite name $MMDEBSTRAP_SUITE does not make sense with this hook and might select the wrong Essential:yes package set" >&2
fi
fi
rootdir="$1"
SOURCELIST="/etc/apt/sources.list"
eval "$(apt-config shell SOURCELIST Dir::Etc::SourceList/f)"
SOURCEPARTS="/etc/apt/sources.d/"
eval "$(apt-config shell SOURCEPARTS Dir::Etc::SourceParts/d)"
PREFERENCES="/etc/apt/preferences"
eval "$(apt-config shell PREFERENCES Dir::Etc::Preferences/f)"
PREFERENCESPARTS="/etc/apt/preferences.d/"
eval "$(apt-config shell PREFERENCESPARTS Dir::Etc::PreferencesParts/d)"
for f in "$SOURCELIST" \
"$SOURCEPARTS"/*.list \
"$SOURCEPARTS"/*.sources \
"$PREFERENCES" \
"$PREFERENCESPARTS"/*; do
[ -e "$f" ] || continue
if [ -e "$rootdir/$f" ]; then
if [ "${MMDEBSTRAP_VERBOSITY:-1}" -ge 2 ]; then
echo "I: $f already exists in chroot, appending..." >&2
fi
echo >> "$rootdir/$f"
fi
cat "$f" >> "$rootdir/$f"
if [ "${MMDEBSTRAP_VERBOSITY:-1}" -ge 3 ]; then
echo "D: contents of $f inside the chroot:" >&2
cat "$rootdir/$f" >&2
fi
done