block: use proper qerrors in qmp_block_resize

Let's report specific errors so that management tools and users can
identify the problem.

Two new qerrors are needed:
 * QERR_DEVICE_HAS_NO_MEDIUM for ENOMEDIUM
 * QERR_DEVICE_IS_READ_ONLY for EACCES

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/qerror.c b/qerror.c
index 2979b3ef7f..3d95383940 100644
--- a/qerror.c
+++ b/qerror.c
@@ -80,6 +80,10 @@ static const QErrorStringTable qerror_table[] = {
         .desc      = "Migration is disabled when using feature '%(feature)' in device '%(device)'",
     },
     {
+        .error_fmt = QERR_DEVICE_HAS_NO_MEDIUM,
+        .desc      = "Device '%(device)' has no medium",
+    },
+    {
         .error_fmt = QERR_DEVICE_INIT_FAILED,
         .desc      = "Device '%(device)' could not be initialized",
     },
@@ -88,6 +92,10 @@ static const QErrorStringTable qerror_table[] = {
         .desc      = "Device '%(device)' is in use",
     },
     {
+        .error_fmt = QERR_DEVICE_IS_READ_ONLY,
+        .desc      = "Device '%(device)' is read only",
+    },
+    {
         .error_fmt = QERR_DEVICE_LOCKED,
         .desc      = "Device '%(device)' is locked",
     },