[OSSTEST PATCH 19/28] ts-debian-hvm-install: Defer preseed generation

[Ian Jackson <ian.jackson@eu.citrix.com>]

Defer preseed file generation until after we have fetched and looked
inside the install image, because we are going to want to make changes
to the preseed file based on the image contents.

No overall functional change, although some things happen in a
different order now, and the ISO manipulation takes place in two calls
to target_cmd_root rather than one.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
v4: New patch.  Needed because otherwise the test for the grub install
    image (to be introduced in the next patch) happens before the ISO
    is unpacked, and we would then always fall back to isolinux.
---
 ts-debian-hvm-install |   14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/ts-debian-hvm-install b/ts-debian-hvm-install
index 3b93ebd..bb79d59 100755
--- a/ts-debian-hvm-install
+++ b/ts-debian-hvm-install
@@ -200,13 +200,9 @@ sub prep () {
                           -b boot/grub/efi.img
                           -no-emul-boot
                           -r);
-    my @isogen_opts = (iso_gen_flags_basic(), @isogen_extra);
 
     iso_create_empty($ho, $emptyiso, $emptydir);
 
-    target_putfilecontents_root_stash($ho, 10, preseed(),
-                                      $preseed_file_path);
-
     # If host has >8G free memory, create a guest with 4G memory to catch
     # any error that triggers cross 4G boundary
     my $host_freemem_mb = host_get_free_memory($ho);
@@ -224,8 +220,16 @@ sub prep () {
                           Bios => $r{bios},
                           PostImageHook => sub {
         my $cmds = iso_copy_content_from_image($gho, $newiso);
-        $cmds .= prepare_initrd($initrddir,$newiso,$preseed_file_path);
         target_cmd_root($ho, $cmds, $isotimeout);
+
+        my @isogen_opts = (iso_gen_flags_basic(), @isogen_extra);
+
+        target_putfilecontents_root_stash($ho, 10, preseed(),
+                                          $preseed_file_path);
+
+        $cmds = prepare_initrd($initrddir,$newiso,$preseed_file_path);
+        target_cmd_root($ho, $cmds, $isotimeout);
+
         target_putfilecontents_root_stash($ho, 10, grub_cfg(),
                                           "$newiso/debian/boot/grub/grub.cfg");
 
-- 
1.7.10.4