- if (len && s->sector_count) {
- bdrv_read(s->bdrv, s->sector, s->buf, 1);
- s->sector++;
- s->sector_count--;
- s->buf_pos = 0;
- s->buf_len = 512;
- /* Recurse to complete the partial read. */
- return scsi_read_data(s, data, len);
+/* Helper function for command completion. */
+static void scsi_command_complete(SCSIRequest *r, int sense)
+{
+ SCSIDevice *s = r->dev;
+ uint32_t tag;
+ DPRINTF("Command complete tag=0x%x sense=%d\n", r->tag, sense);
+ s->sense = sense;
+ tag = r->tag;
+ scsi_remove_request(r);
+ s->completion(s->opaque, SCSI_REASON_DONE, tag, sense);
+}
+
+/* Cancel a pending data transfer. */
+void scsi_cancel_io(SCSIDevice *s, uint32_t tag)
+{
+ SCSIRequest *r;
+ DPRINTF("Cancel tag=0x%x\n", tag);
+ r = scsi_find_request(s, tag);
+ if (r) {
+ if (r->aiocb)
+ bdrv_aio_cancel(r->aiocb);
+ r->aiocb = NULL;
+ scsi_remove_request(r);