From: Dmitry Bogdanov Date: Tue, 6 Sep 2022 10:34:20 +0000 (+0300) Subject: scsi: target: core: Check emulate_3pc for RECEIVE COPY X-Git-Tag: v6.2-rc1~97^2~84 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b8908e5e1d1de66e6905fbec7cdfbbf8ac3ecf9a;p=thirdparty%2Flinux.git 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: Roman Bolshakov Signed-off-by: Dmitry Bogdanov Link: https://lore.kernel.org/r/20220906103421.22348-6-d.bogdanov@yadro.com Reviewed-by: Mike Christie Signed-off-by: Martin K. Petersen --- diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 8713cda0c2fb5..edf5222082855 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -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);