[Libguestfs] [PATCH 4/4] v2v: reuse main guestfs for virtio win drivers iso

If we're given a ISO image as the source of virtio windows drivers, reuse the same guestfs handle that is open for accessing the guest being inspected, rather than creating a new one. This is lighter-weight and more convenient, and, given the support for hot-inserting/ejecting an ISO image in libguestfs, appears no less reliable. Signed-off-by: Roman Kagan <rkagan(a)virtuozzo.com&gt; --- v2v/convert_windows.ml | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/v2v/convert_windows.ml b/v2v/convert_windows.ml index b6e6c62..51bbd8c 100644 --- a/v2v/convert_windows.ml +++ b/v2v/convert_windows.ml @@ -254,18 +254,15 @@ echo uninstalling Xen PV driver ) else if is_regular_file virtio_win then ( try - let g2 = new Guestfs.guestfs () in - if trace () then g2#set_trace true; - if verbose () then g2#set_verbose true; - g2#add_drive_opts virtio_win ~readonly:true; - g2#launch (); - let vio_root = "/" in - g2#mount_ro "/dev/sda" vio_root; - let paths = g2#find vio_root in + let label = "viowin" in + g#add_drive_opts virtio_win ~readonly:true ~label:label; + let vio_root = (g#mkdtemp (driverdir // "isoXXXXXX")) in + g#mount_ro ("/dev/disk/guestfs" // label) vio_root; + let paths = g#find vio_root in Array.iter ( fun path -> let source = vio_root // path in - if ((g2#is_file source ~followsymlinks:false) && + if ((g#is_file source ~followsymlinks:false) && (match_vio_path_with_os path inspect.i_arch inspect.i_major_version inspect.i_minor_version inspect.i_product_variant)) then @@ -275,9 +272,11 @@ echo uninstalling Xen PV driver printf "Copying virtio driver bits: '%s:%s' -> '%s'\n" virtio_win path target; - g#write target (g2#read_file source) + g#cp source target ) paths; - g2#close() + g#umount vio_root; + g#remove_drive label; + g#rmdir vio_root with Guestfs.Error msg -> error (f_"%s: cannot open virtio-win ISO file: %s") virtio_win msg ) -- 2.4.3