qemu: Use short domain name in qemuDomainGetPreservedMountPath

Otherwise longer domain names might generate paths that are too long
to be created.  This follows what other parts of the code do as well.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1453194

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 05bf1c7d0250bd4da3e364365e4dd1bd80a72efe..77ae450b76f9bc36c77164f819477f8e9137dee1 100644 (file)
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -7827,14 +7827,18 @@ qemuDomainGetPreservedMountPath(virQEMUDriverConfigPtr cfg,
     char *path = NULL;
     char *tmp;
     const char *suffix = mountpoint + strlen(DEVPREFIX);
+    char *domname = virDomainObjGetShortName(vm->def);
     size_t off;
 
+    if (!domname)
+        return NULL;
+
     if (STREQ(mountpoint, "/dev"))
         suffix = "dev";
 
     if (virAsprintf(&path, "%s/%s.%s",
-                    cfg->stateDir, vm->def->name, suffix) < 0)
-        return NULL;
+                    cfg->stateDir, domname, suffix) < 0)
+        goto cleanup;
 
     /* Now consider that @mountpoint is "/dev/blah/blah2".
      * @suffix then points to "blah/blah2". However, caller
@@ -7850,6 +7854,8 @@ qemuDomainGetPreservedMountPath(virQEMUDriverConfigPtr cfg,
         tmp++;
     }
 
+ cleanup:
+    VIR_FREE(domname);
     return path;
 }