diff options
| -rw-r--r-- | debian/tests/control | 10 | ||||
| -rwxr-xr-x | debian/tests/debian-testing | 270 | ||||
| -rwxr-xr-x | debian/tests/fake/pbuilder-0.228.4-1 | 31 | ||||
| -rwxr-xr-x | debian/tests/fake/schroot-1.6.10-3 | 47 |
4 files changed, 358 insertions, 0 deletions
diff --git a/debian/tests/control b/debian/tests/control new file mode 100644 index 0000000..12d78c7 --- /dev/null +++ b/debian/tests/control @@ -0,0 +1,10 @@ +Tests: debian-testing +Depends: + debootstrap, + libdistro-info-perl, + libdpkg-perl, + libipc-run-perl, + perl, + systemd [linux-any], + systemd-container [linux-any], +Restrictions: allow-stderr, needs-root diff --git a/debian/tests/debian-testing b/debian/tests/debian-testing new file mode 100755 index 0000000..3f8e81a --- /dev/null +++ b/debian/tests/debian-testing @@ -0,0 +1,270 @@ +#!/usr/bin/perl +# Verify that debootstrap'ing Debian testing produces a usable chroot, +# and in particular that using it with early 2017 versions of schroot and +# pbuilder results in working pseudo-terminals (#817236) +# +# Copyright © 2017 Simon McVittie +# SPDX-License-Identifier: MIT +# (see debian/copyright) + +use strict; +use warnings; + +use Cwd qw(getcwd); +use Debian::DistroInfo; +use Dpkg::Version; +use IPC::Run qw(run); +use Test::More; + +my $srcdir = getcwd; + +sub verbose_run { + my $argv = shift; + diag("Running: @{$argv}"); + return run($argv, @_); +} + +sub capture { + my $output; + my $argv = shift; + ok(verbose_run($argv, '>', \$output), "@{$argv}"); + chomp $output; + return $output; +} + +sub check_fake_schroot { + my %params = @_; + my $reference = $params{reference}; + my $extra_argv = $params{extra_argv} || []; + + my $response = capture([qw(unshare -m), + "$srcdir/debian/tests/fake/schroot-1.6.10-3", @{$extra_argv}, + $params{chroot}, + qw(runuser -u nobody --), + qw(script -q -c), 'cat /etc/debian_version', '/dev/null']); + $response =~ s/\r//g; + is($response, $reference, 'script(1) should work under (fake) schroot'); +} + +sub check_fake_pbuilder { + my %params = @_; + my $reference = $params{reference}; + + my $response = capture([qw(unshare -m), + "$srcdir/debian/tests/fake/pbuilder-0.228.4-1", $params{chroot}, + qw(runuser -u nobody --), + qw(script -q -c), 'cat /etc/debian_version', '/dev/null']); + $response =~ s/\r//g; + is($response, $reference, + 'script(1) should work under (fake) pbuilder'); +} + +sub check_chroot { + my %params = @_; + my $chroot = $params{chroot}; + my $response; + + ok(-f "$chroot/etc/debian_version", + 'chroot should have /etc/debian_version'); + ok(-x "$chroot/usr/bin/env", + 'chroot should have /usr/bin/env which is Essential'); + ok(-x "$chroot/usr/bin/hello", 'chroot should have /usr/bin/hello due to --include'); + ok(-d "$chroot/usr/share/doc", 'chroot should have /usr/share/doc'); + + ok(-c "$chroot/dev/full", '/dev/full should be a character device'); + is(capture(['/usr/bin/stat', '--printf=%t %T %a', "$chroot/dev/full"]), + '1 7 666', '/dev/full should be device 1,7 with 0666 permissions'); + ok(-c "$chroot/dev/null"); + is(capture(['/usr/bin/stat', '--printf=%t %T %a', "$chroot/dev/null"]), + '1 3 666', '/dev/null should be device 1,3 with 0666 permissions'); + + my $did_mknod_ptmx; + + if (-l "$chroot/dev/ptmx") { + # Necessary if debootstrap is run inside some containers, see + # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817236#77 + diag("/dev/ptmx is a symbolic link"); + like(readlink("$chroot/dev/ptmx"), qr{(?:/dev/)?pts/ptmx}, + 'if /dev/ptmx is a symlink it should be to /dev/pts/ptmx'); + $did_mknod_ptmx = 0; + } + else { + diag("/dev/ptmx is not a symbolic link"); + ok(-c "$chroot/dev/ptmx", + 'if /dev/pts is not a symlink it should be a character device'); + is(capture(['/usr/bin/stat', '--printf=%t %T %a', + "$chroot/dev/ptmx"]), '5 2 666', + 'if /dev/pts is a device node it should be 5,2 with 0666 permissions'); + $did_mknod_ptmx = 1; + } + + if ($params{can_mknod_ptmx}) { + ok($did_mknod_ptmx, 'able to mknod ptmx so should have done so'); + } + + my $reference = capture(['cat', "$chroot/etc/debian_version"]); + + is(capture([qw(chroot chroot.d runuser -u nobody -- + cat /etc/debian_version)]), + $reference); + + # Use unshare -m to make sure the /dev mount gets cleaned up on exit, even + # on failures + check_fake_schroot(%params, reference => $reference); + + # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817236 + if (Dpkg::Version->new($params{kernel}) < Dpkg::Version->new('4.7') && + defined $params{container} && $params{container} eq 'lxc') { + TODO: { + local $TODO = "schroot --sbuild doesn't work in lxc on older ". + "kernels"; + check_fake_schroot(%params, reference => $reference, + extra_argv => ['--sbuild']); + } + } + elsif (! $params{can_mknod_ptmx}) { + TODO: { + local $TODO = "schroot --sbuild doesn't work when /dev/ptmx is ". + "a symlink to /dev/pts/ptmx"; + check_fake_schroot(%params, reference => $reference, + extra_argv => ['--sbuild']); + } + } + else { + check_fake_schroot(%params, reference => $reference, + extra_argv => ['--sbuild']); + } + + # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817236 + if (! $params{can_mknod_ptmx}) { + TODO: { + local $TODO = "schroot --sbuild doesn't work when /dev/ptmx is ". + "a symlink to /dev/pts/ptmx"; + check_fake_pbuilder(%params, reference => $reference); + } + } + else { + check_fake_pbuilder(%params, reference => $reference); + } +} + +my $mirror = 'http://deb.debian.org/debian'; +my $tmp = $ENV{AUTOPKGTEST_TMP} || $ENV{ADTTMP}; +die "no autopkgtest temporary directory specified" unless $tmp; +chdir $tmp or die "chdir $tmp: $!"; + +$ENV{LC_ALL} = 'C.UTF-8'; + +# Try to inherit a Debian mirror from the host +foreach my $file ('/etc/apt/sources.list', + glob('/etc/apt/sources.list.d/*.list')) { + open(my $fh, '<', $file); + while (<$fh>) { + if (m{^deb\s+(http://[-a-zA-Z0-9.:]+/debian)\s}) { + $mirror = $1; + last; + } + } + close $fh; +} + +if (run(['ischroot'], '>&2')) { + diag("In a chroot according to ischroot(1)"); +} +else { + diag("Not in a chroot according to ischroot(1)"); +} + +my $virtualization; +if ($^O ne 'linux') { + diag("Cannot use systemd-detect-virt on non-Linux"); +} +elsif (run(['systemd-detect-virt', '--vm'], '>', \$virtualization)) { + chomp $virtualization; + diag("Virtualization: $virtualization"); +} +else { + $virtualization = undef; + diag("Virtualization: (not in a virtual machine)"); +} + +my $in_container = 0; +my $container; +if ($^O ne 'linux') { + diag("Cannot use systemd-detect-virt on non-Linux"); +} +elsif (run(['systemd-detect-virt', '--container'], '>', \$container)) { + $in_container = 1; + chomp $container; + diag("Container: $container"); +} +else { + $container = undef; + diag("Container: (not in a container)"); +} + +my $kernel = capture([qw(uname -r)]); +chomp $kernel; + +open(my $fh, '<', '/proc/self/mountinfo'); +while (<$fh>) { + chomp; + diag("mountinfo: $_"); +} +close $fh; + +my $can_mknod_ptmx; +if (run([qw(mknod -m000 ptmx c 5 2)], '&>', '/dev/null')) { + diag("mknod ptmx succeeded"); + $can_mknod_ptmx = 1; +} +else { + diag("mknod ptmx failed, are we in a container?"); + $can_mknod_ptmx = 0; +} + +my $distro_info = DebianDistroInfo->new; +my $testing = $distro_info->testing; + +if (!verbose_run(['debootstrap', + '--include=debootstrap,debian-archive-keyring,gnupg,hello', + '--variant=minbase', + $testing, 'chroot.d', $mirror], '>&2')) { + BAIL_OUT("debootstrap failed: $?"); +} + +check_chroot(chroot => 'chroot.d', can_mknod_ptmx => $can_mknod_ptmx, + kernel => $kernel, container => $container); + +if ($^O ne 'linux') { + diag("Cannot use systemd-nspawn on non-Linux"); +} +elsif ($in_container) { + diag('in a container according to systemd --container, not trying to '. + 'use systemd-nspawn'); +} +elsif (! -d '/run/systemd/system') { + diag('systemd not booted, not trying to use systemd-nspawn'); +} +else { + if (!verbose_run(['systemd-nspawn', '-D', 'chroot.d', + "--bind=$ENV{ADTTMP}:/mnt", + '--bind-ro=/usr/sbin/debootstrap', + '--bind-ro=/usr/share/debootstrap', + '--', + 'debootstrap', '--include=hello', '--variant=minbase', + $testing, '/mnt/from-nspawn.d', $mirror], '>&2')) { + BAIL_OUT("debootstrap wrapped in systemd-nspawn failed: $?"); + } + + check_chroot(chroot => 'from-nspawn.d', can_mknod_ptmx => 0, + kernel => $kernel, container => "nspawn"); +} + +if (!run([qw(rm -fr --one-file-system chroot.d)], '>&2')) { + BAIL_OUT('Unable to remove chroot.d'); +} + +done_testing; + +# vim:set sw=4 sts=4 et: diff --git a/debian/tests/fake/pbuilder-0.228.4-1 b/debian/tests/fake/pbuilder-0.228.4-1 new file mode 100755 index 0000000..95191b7 --- /dev/null +++ b/debian/tests/fake/pbuilder-0.228.4-1 @@ -0,0 +1,31 @@ +#!/bin/sh +# fake/pbuilder-0.228.4-1 -- emulate how pbuilder/0.228.4-1 would chroot. +# It mounts /dev/pts, without explicitly requesting a new instance or a +# usable /dev/pts/ptmx. +# (There is of course a lot more that it does, but these are the parts that +# affect pty users like script(1).) +# +# Copyright © 2017 Simon McVittie +# SPDX-License-Identifier: MIT +# (see debian/copyright) + +set -e + +chroot="$1" +shift +if test -z "$chroot" || test -z "$1"; then + echo "Usage: $0 CHROOT COMMAND...">&2 + exit 2 +fi + +mkdir -p "$chroot/dev/pts" +mount -t devpts none "$chroot/dev/pts" -onoexec,nosuid,gid=5,mode=620 + +ls -l "$chroot/dev/ptmx" | sed -e 's/^/# fake-pbuilder: /' >&2 +ls -l "$chroot/dev/pts/ptmx" | sed -e 's/^/# fake-pbuilder: /' >&2 + +e=0 +chroot "$chroot" "$@" || e=$? + +umount "$chroot/dev/pts" +exit "$e" diff --git a/debian/tests/fake/schroot-1.6.10-3 b/debian/tests/fake/schroot-1.6.10-3 new file mode 100755 index 0000000..00d3531 --- /dev/null +++ b/debian/tests/fake/schroot-1.6.10-3 @@ -0,0 +1,47 @@ +#!/bin/sh +# fake/schroot-1.6.10-3 -- emulate how schroot/1.6.10-3 would chroot. +# It bind-mounts /dev/pts and maybe /dev from the host system. +# (There is of course a lot more that it does, but these are the parts that +# affect pty users like script(1).) +# +# Copyright © 2017 Simon McVittie +# SPDX-License-Identifier: MIT +# (see debian/copyright) + +set -e + +# /etc/schroot/default/fstab +bind_dev=yes + +while true; do + case "$1" in + (--sbuild) + shift + # /etc/schroot/sbuild/fstab + bind_dev=no + ;; + (*) + break + esac +done + +chroot="$1" +shift +if test -z "$chroot" || test -z "$1"; then + echo "Usage: $0 CHROOT COMMAND...">&2 + exit 2 +fi + +[ "$bind_dev" = no ] || mount --bind /dev "$chroot/dev" +mount --bind /dev/pts "$chroot/dev/pts" + +ls -l "$chroot/dev/ptmx" | sed -e 's/^/# fake-schroot: /' >&2 +ls -l "$chroot/dev/pts/ptmx" | sed -e 's/^/# fake-schroot: /' >&2 + +e=0 +chroot "$chroot" "$@" || e=$? + +umount "$chroot/dev/pts" +[ "$bind_dev" = no ] || umount "$chroot/dev" + +exit "$e" |