[libvirt PATCH] vmx: Don't error out on missing filename for cdrom

[Martin Kletzander]

This is perfectly valid in VMWare and the VM just boots with an empty drive.  We
used to just skip the whole drive before, but since we changed how we parse
empty cdrom drives this now results in an error and the user not being able to
even dump the XML.  Instead of erroring out, just keep the drive empty.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1903953

Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
---
 src/vmx/vmx.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c
index b86dbe9ca267..40e4ef962992 100644
--- a/src/vmx/vmx.c
+++ b/src/vmx/vmx.c
@@ -2447,10 +2447,18 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
                 goto cleanup;
             }
 
+            tmp = ctx->parseFileName(fileName, ctx->opaque);
             virDomainDiskSetType(*def, VIR_STORAGE_TYPE_FILE);
-            if (!(tmp = ctx->parseFileName(fileName, ctx->opaque)))
-                goto cleanup;
-            virDomainDiskSetSource(*def, tmp);
+            /* It is easily possible to have a cdrom with non-existing filename
+             * as the image and vmware just provides an empty cdrom.
+             *
+             * See: https://bugzilla.redhat.com/1903953
+             */
+            if (tmp) {
+                virDomainDiskSetSource(*def, tmp);
+            } else {
+                virResetLastError();
+            }
             VIR_FREE(tmp);
         } else if (deviceType && STRCASEEQ(deviceType, "atapi-cdrom")) {
             virDomainDiskSetType(*def, VIR_STORAGE_TYPE_BLOCK);
-- 
2.29.2