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scsi-disk: convert more errno values back to SCSI statuses 

Linux has some OS-specific (and sometimes weird) mappings for various SCSI
statuses and sense codes.  The most important is probably RESERVATION
CONFLICT.  Add them so that they can be reported back to the guest
kernel.

Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-11-12 10:52:04 +01:00
parent b430b51395
commit 3b12a7fd39
1 changed files with 19 additions and 0 deletions
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19
hw/scsi/scsi-disk.c
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@ -461,6 +461,25 @@ static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
}
error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense));
break;
#ifdef CONFIG_LINUX
/* These errno mapping are specific to Linux. For more information:
* - scsi_decide_disposition in drivers/scsi/scsi_error.c
* - scsi_result_to_blk_status in drivers/scsi/scsi_lib.c
* - blk_errors[] in block/blk-core.c
*/
case EBADE:
/* DID_NEXUS_FAILURE -> BLK_STS_NEXUS. */
scsi_req_complete(&r->req, RESERVATION_CONFLICT);
break;
case ENODATA:
/* DID_MEDIUM_ERROR -> BLK_STS_MEDIUM. */
scsi_check_condition(r, SENSE_CODE(READ_ERROR));
break;
case EREMOTEIO:
/* DID_TARGET_FAILURE -> BLK_STS_TARGET. */
scsi_req_complete(&r->req, HARDWARE_ERROR);
break;
#endif
case ENOMEDIUM:
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
break;