Commit b8908e5e authored by Dmitry Bogdanov's avatar Dmitry Bogdanov Committed by Martin K. Petersen
Browse files

scsi: target: core: Check emulate_3pc for RECEIVE COPY 



RECEIVE COPY RESULTS is an opcode from 3rd party copy command set and shall
be rejected if emulate_3pc attribute is off like EXTENDED COPY.

Reviewed-by: default avatarRoman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: default avatarDmitry Bogdanov <d.bogdanov@yadro.com>
Link: https://lore.kernel.org/r/20220906103421.22348-6-d.bogdanov@yadro.com


Reviewed-by: default avatarMike Christie <michael.christie@oracle.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent bd217b8c

drivers/target/target_core_xcopy.c

+6 −0
Original line number Diff line number Diff line
@@ -1009,8 +1009,14 @@ sense_reason_t target_do_receive_copy_results(struct se_cmd *se_cmd) 
{

	unsigned char *cdb = &se_cmd->t_task_cdb[0];

	int sa = (cdb[1] & 0x1f), list_id = cdb[2];

	struct se_device *dev = se_cmd->se_dev;

	sense_reason_t rc = TCM_NO_SENSE;



	if (!dev->dev_attrib.emulate_3pc) {

		pr_debug("Third-party copy operations explicitly disabled\n");

		return TCM_UNSUPPORTED_SCSI_OPCODE;

	}



	pr_debug("Entering target_do_receive_copy_results: SA: 0x%02x, List ID:"

		" 0x%02x, AL: %u\n", sa, list_id, se_cmd->data_length);