Re: [PATCH v2 14/32] util: Fix virStorageBackendSCSINewLun error handling

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On Fri, Feb 08, 2019 at 01:37:08PM -0500, John Ferlan wrote:
Commit a523770c3 added @retval return processing for
virStorageBackendUpdateVolInfo in order to allow a -2
to be return; however, upon successful completion
@retval = 0 and if either the virStorageBackendSCSISerial
or the virStoragePoolObjAddVol failed, the method would
return 0, but not add the @vol to the pool. So let's
just reset retval = -1 and continue processing.

Signed-off-by: John Ferlan <jferlan@xxxxxxxxxx>
---
src/storage/storage_util.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
index fa364941c5..e4913b3405 100644
--- a/src/storage/storage_util.c
+++ b/src/storage/storage_util.c
@@ -3869,6 +3869,9 @@ virStorageBackendSCSINewLun(virStoragePoolObjPtr pool,
                                                 VIR_STORAGE_VOL_READ_NOERROR)) < 0)
        goto cleanup;

+    /* Reset retval for proper error handling */
+    retval = -1;
+

The neater fix is not to mess with the implied return value in
the first place:

if ((rc = UpdateVolInfo()) < 0) {
   retval = rc;
   goto cleanup;
}

But this goes away in the next patch, so:
Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>

Jano

    vol->key = virStorageBackendSCSISerial(vol->target.path,
                                           (def->source.adapter.type ==
                                            VIR_STORAGE_ADAPTER_TYPE_FC_HOST));
--
2.20.1

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