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make sure that the unshared user has read access to the included package files

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Johannes Schauer Marin Rodrigues 2022-12-22 10:16:27 +01:00
parent 0dfd9adf2b
commit a6a31e60eb
Signed by untrusted user: josch
GPG key ID: F2CBA5C78FBD83E1
1 changed files with 30 additions and 0 deletions
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mmdebstrap
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@ -5576,6 +5576,36 @@ sub main() {
$? == 0 or error "chown failed";
}
# check if .deb files given by --include are readable by the unshared user
if ($options->{mode} eq 'unshare'
and scalar(grep { /^\// } @{ $options->{include} }) > 0) {
my $pid = get_unshare_cmd(
sub {
my $ret = 0;
foreach my $f (grep { /^\// } @{ $options->{include} }) {
# open the file for real because -r will report the file as
# readable even though open will fail (in contrast to the
# coreutils test utility, perl doesn't use faccessat)
my $res = open(my $fh, '<', $f);
if (!$res) {
warning "unshared user cannot access $f for reading";
$ret = 1;
} else {
close $fh;
}
}
exit $ret;
},
\@idmap
);
waitpid $pid, 0;
if ($? != 0) {
warning "no read access for some packages for the unshared user";
warning "maybe try running mmdebstrap with "
. "--hook-dir=/usr/share/mmdebstrap/hooks/file-mirror-automount";
}
}
# figure out whether we have mknod
$options->{havemknod} = 0;
if ($options->{mode} eq 'unshare') {