[Libguestfs] [PATCH][RFC] launch: appliance is optional

[Olaf Hering]

 # virt-filesystems -v -d 6326ad4e-5805-2ab4-1338-d1dad8c76162 --all
libguestfs: libvirt version = 10002
libguestfs: [00000ms] connect to libvirt
libguestfs: [00001ms] get libvirt capabilities
libguestfs: [00234ms] build appliance
libguestfs: [00234ms] create libvirt XML
libguestfs: error: error constructing libvirt XML at "xmlTextWriterWriteAttribute (xo, BAD_CAST "file", BAD_CAST appliance)": No such file or directory
libguestfs: closing guestfs handle 0x656270 (state 0)

 # ls -lh /usr/lib64/guestfs/*
-rw-r--r-- 1 root root  13M Oct  8 16:15 /usr/lib64/guestfs/initramfs.x86_64.img
-rw-r--r-- 1 root root 3.7M Oct  6 09:25 /usr/lib64/guestfs/vmlinuz.x86_64

Signed-off-by: Olaf Hering <olaf at aepfle.de>
---

perhaps the if (!appliance) check should be somewhere else?

 src/launch-libvirt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/launch-libvirt.c b/src/launch-libvirt.c
index d678266..5914642 100644
--- a/src/launch-libvirt.c
+++ b/src/launch-libvirt.c
@@ -936,6 +936,10 @@ construct_libvirt_xml_appliance (guestfs_h *g, xmlTextWriterPtr xo,
   char drive_name[64] = "sd";
   char scsi_target[64];
 
+  /* appliance is optional */
+  if (appliance == NULL)
+     return 0;
+
   guestfs___drive_name (drv_index, &drive_name[2]);
   snprintf (scsi_target, sizeof scsi_target, "%zu", drv_index);
 
-- 
1.7.12.1