util: storage: Remove detected authentication data for backing chains

We can't really detect all the authentication data in a sane manner for
disk backing chains. Since the old RBD parser parses it in some cases as
the argv->XML convertor requires it, we can't just drop it.

Instead clear any detected authentication data in the code paths related
to disk backing chain lookup and fix the tests to cope with the change.

https://bugzilla.redhat.com/show_bug.cgi?id=1544659Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

src/util/virstoragefile.c

@@ -3405,6 +3405,14 @@ virStorageSourceNewFromBackingAbsolute(const char *path)
             goto error;
 
         virStorageSourceNetworkAssignDefaultPorts(ret);
+
+        /* Some of the legacy parsers parse authentication data since they are
+         * also used in other places. For backing store detection the
+         * authentication data would be invalid anyways, so we clear it */
+        if (ret->auth) {
+            virStorageAuthDefFree(ret->auth);
+            ret->auth = NULL;
+        }
     }
 
     return ret;

tests/virstoragetest.c

@@ -308,8 +308,7 @@ static const char testStorageChainFormat[] =
     "type:%d\n"
     "format:%d\n"
     "protocol:%s\n"
-    "hostname:%s\n"
-    "secret:%s\n";
+    "hostname:%s\n";
 
 static int
 testStorageChain(const void *args)
@@ -374,8 +373,7 @@ testStorageChain(const void *args)
                         data->files[i]->type,
                         data->files[i]->format,
                         virStorageNetProtocolTypeToString(data->files[i]->protocol),
-                        NULLSTR(data->files[i]->hostname),
-                        NULLSTR(data->files[i]->secret)) < 0 ||
+                        NULLSTR(data->files[i]->hostname)) < 0 ||
             virAsprintf(&actual,
                         testStorageChainFormat, i,
                         NULLSTR(elt->path),
@@ -386,8 +384,7 @@ testStorageChain(const void *args)
                         elt->type,
                         elt->format,
                         virStorageNetProtocolTypeToString(elt->protocol),
-                        NULLSTR(elt->nhosts ? elt->hosts[0].name : NULL),
-                        NULLSTR(elt->auth ? elt->auth->username : NULL)) < 0) {
+                        NULLSTR(elt->nhosts ? elt->hosts[0].name : NULL)) < 0) {
             VIR_FREE(expect);
             VIR_FREE(actual);
             goto cleanup;
@@ -1361,9 +1358,6 @@ mymain(void)
     TEST_BACKING_PARSE("rbd:testshare:id=asdf:mon_host=example.com",
                        "<source protocol='rbd' name='testshare'>\n"
                        "  <host name='example.com'/>\n"
-                       "  <auth username='asdf'>\n"
-                       "    <secret type='ceph'/>\n"
-                       "  </auth>\n"
                        "</source>\n");
     TEST_BACKING_PARSE("nbd:example.org:6000:exportname=blah",
                        "<source protocol='nbd' name='blah'>\n"
@@ -1538,9 +1532,6 @@ mymain(void)
                             "}",
                        "<source protocol='rbd' name='testshare'>\n"
                        "  <host name='example.com'/>\n"
-                       "  <auth username='asdf'>\n"
-                       "    <secret type='ceph'/>\n"
-                       "  </auth>\n"
                        "</source>\n");
     TEST_BACKING_PARSE("json:{\"file\":{\"driver\":\"rbd\","
                                        "\"image\":\"test\","