scsi: Implement 'get_sense' callback

The get_sense callback copies existing sense information into
the provided buffer. This is required if sense information
should be transferred together with the command response.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 686d59d818..ae16a2d6f7 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -156,6 +156,15 @@ uint8_t *scsi_req_get_buf(SCSIRequest *req)
     return req->dev->info->get_buf(req);
 }
 
+int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len)
+{
+    if (req->dev->info->get_sense) {
+        return req->dev->info->get_sense(req, buf, len);
+    } else {
+        return 0;
+    }
+}
+
 int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf)
 {
     int32_t rc;