conf: storage: also sanitize source dir

Commit a7fb2258 added sanitization of storage pool target paths,
however source dir paths were left unsanitized.

A netfs pool with:
<source>
  <host name='10.20.30.40'/>
  <dir path='/nfs/'/>
</source>
will not be correctly detected as mounted by
virStorageBackendFileSystemIsMounted, because it shows up in the
mount list without the trailing slash.

Sanitize the source dir as well.

https://bugzilla.redhat.com/show_bug.cgi?id=1723247Signed-off-by: NJán Tomko <jtomko@redhat.com>
Acked-by: NPeter Krempa <pkrempa@redhat.com>

src/conf/storage_conf.c

@@ -533,6 +533,7 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
     VIR_AUTOFREE(char *) port = NULL;
     VIR_AUTOFREE(char *) ver = NULL;
     VIR_AUTOFREE(xmlNodePtr *) nodeset = NULL;
+    VIR_AUTOFREE(char *) sourcedir = NULL;
 
     relnode = ctxt->node;
     ctxt->node = node;
@@ -630,7 +631,9 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
 
     }
 
-    source->dir = virXPathString("string(./dir/@path)", ctxt);
+    sourcedir = virXPathString("string(./dir/@path)", ctxt);
+    if (sourcedir)
+        source->dir = virFileSanitizePath(sourcedir);
     /* In gluster, a missing dir defaults to "/" */
     if (!source->dir && pool_type == VIR_STORAGE_POOL_GLUSTER &&
         VIR_STRDUP(source->dir, "/") < 0)

tests/storagepoolxml2xmlin/pool-netfs-slash.xml

+<pool type='netfs'>
+  <name>nfsimages</name>
+  <uuid>7641d5a8-af11-f730-a34e-0a7dfcede71f</uuid>
+  <capacity>0</capacity>
+  <allocation>0</allocation>
+  <available>0</available>
+  <source>
+    <host name='localhost'/>
+    <dir path='/var/lib/libvirt/images/'/>
+    <format type='nfs'/>
+  </source>
+  <target>
+    <path>/mnt</path>
+    <permissions>
+      <mode>0700</mode>
+      <owner>0</owner>
+      <group>0</group>
+    </permissions>
+  </target>
+</pool>

tests/storagepoolxml2xmlout/pool-netfs-slash.xml

+<pool type='netfs'>
+  <name>nfsimages</name>
+  <uuid>7641d5a8-af11-f730-a34e-0a7dfcede71f</uuid>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
+  <source>
+    <host name='localhost'/>
+    <dir path='/var/lib/libvirt/images'/>
+    <format type='nfs'/>
+  </source>
+  <target>
+    <path>/mnt</path>
+    <permissions>
+      <mode>0700</mode>
+      <owner>0</owner>
+      <group>0</group>
+    </permissions>
+  </target>
+</pool>

tests/storagepoolxml2xmltest.c

@@ -73,6 +73,7 @@ mymain(void)
     DO_TEST("pool-iscsi");
     DO_TEST("pool-iscsi-auth");
     DO_TEST("pool-netfs");
+    DO_TEST("pool-netfs-slash");
     DO_TEST("pool-netfs-auto");
     DO_TEST("pool-netfs-protocol-ver");
     DO_TEST("pool-netfs-gluster");