[PATCH OSSTEST v2 01/18] apt: lock osstest's usages of apt-get against each other

[Ian Campbell <ian.campbell@citrix.com>]

Currently we rely on all apt-get invocations being in a single
ts-xen-build-prep job which can't run on a shared host.

That is a bit inflexible so instead use our own lock. We wait indefinitely and
rely on osstest's existing command timeout infrastructure to catch problems.

target_install_packages*() previous estimated the time taken to install the
packages based on the number of packages. This no longer applies because the
install might get stuck behind some other large install. Use a 3000s (nearly
an hour) timeout instead (I expect failures here to be unusual so erred on the
big side)

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
 Osstest/Debian.pm      | 2 +-
 Osstest/TestSupport.pm | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/Osstest/Debian.pm b/Osstest/Debian.pm
index c8db601..b343f0f 100644
--- a/Osstest/Debian.pm
+++ b/Osstest/Debian.pm
@@ -492,7 +492,7 @@ d-i apt-setup/another boolean false
 d-i apt-setup/non-free boolean false
 d-i apt-setup/contrib boolean false
 
-d-i pkgsel/include string openssh-server, ntp, ntpdate, ethtool, $extra_packages
+d-i pkgsel/include string openssh-server, ntp, ntpdate, ethtool, chiark-utils-bin, $extra_packages
 
 $xopts{ExtraPreseed}
 
diff --git a/Osstest/TestSupport.pm b/Osstest/TestSupport.pm
index e6c54bc..2ac490f 100644
--- a/Osstest/TestSupport.pm
+++ b/Osstest/TestSupport.pm
@@ -433,17 +433,18 @@ sub target_putfile_root ($$$$;$) {
 sub target_run_apt {
     my ($ho, $timeout, @aptopts) = @_;
     target_cmd_root($ho,
-   "DEBIAN_PRIORITY=critical UCF_FORCE_CONFFOLD=y apt-get @aptopts",
+   "DEBIAN_PRIORITY=critical UCF_FORCE_CONFFOLD=y \
+        with-lock-ex -w /var/lock/osstest-apt apt-get @aptopts",
                     $timeout);
 }
 sub target_install_packages {
     my ($ho, @packages) = @_;
-    target_run_apt($ho, 300 + 100 * @packages,
+    target_run_apt($ho, 3000,
 		   qw(-y install), @packages);
 }
 sub target_install_packages_norec {
     my ($ho, @packages) = @_;
-    target_run_apt($ho, 300 + 100 * @packages,
+    target_run_apt($ho, 3000,
 		   qw(--no-install-recommends -y install), @packages);
 }
 
-- 
2.1.1