nodedev: mdev: Report an error when mdev path resolution fails

It might happen that virFileResolveLinkHelper fails on the lstat system
call. virFileResolveLink expects the caller to report an error when it
fails, however this wasn't the case for udevProcessMediatedDevice.

Signed-off-by: Erik Skultety <eskultet@redhat.com>

diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 4c35fd5c981df6f82a639598eb1e9fe5bcfeb45e..0944b41d76392ed120fcc6559919e7631d7a3f3b 100644 (file)
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1121,8 +1121,10 @@ udevProcessMediatedDevice(struct udev_device *dev,
     if (virAsprintf(&linkpath, "%s/mdev_type", udev_device_get_syspath(dev)) < 0)
         goto cleanup;
 
-    if (virFileResolveLink(linkpath, &canonicalpath) < 0)
+    if (virFileResolveLink(linkpath, &canonicalpath) < 0) {
+        virReportSystemError(errno, _("failed to resolve '%s'"), linkpath);
         goto cleanup;
+    }
 
     if (VIR_STRDUP(data->type, last_component(canonicalpath)) < 0)
         goto cleanup;