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qed: Report error for unsupported features 

Instead of just returning -ENOTSUP, generate a more detailed error.

Unfortunately we don't have a helpful text for features that we don't know yet,
so just print the feature mask. It might be useful at least if someone asks for
help.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Kevin Wolf 2011-02-09 11:13:26 +01:00
parent e8cdcec123
commit 10b758e85c
1 changed files with 8 additions and 1 deletions
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9
block/qed.c
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@ -14,6 +14,7 @@
#include "trace.h"
#include "qed.h"
#include "qerror.h"
static void qed_aio_cancel(BlockDriverAIOCB *blockacb)
{
@ -311,7 +312,13 @@ static int bdrv_qed_open(BlockDriverState *bs, int flags)
return -EINVAL;
}
if (s->header.features & ~QED_FEATURE_MASK) {
return -ENOTSUP; /* image uses unsupported feature bits */
/* image uses unsupported feature bits */
char buf[64];
snprintf(buf, sizeof(buf), "%" PRIx64,
s->header.features & ~QED_FEATURE_MASK);
qerror_report(QERR_UNKNOWN_BLOCK_FORMAT_FEATURE,
bs->device_name, "QED", buf);
return -ENOTSUP;
}
if (!qed_is_cluster_size_valid(s->header.cluster_size)) {
return -EINVAL;