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target: Reject EXTENDED_COPY when emulate_3pc is disabled 

This patch rejects EXTENDED_COPY when the emulate_3pc attribute has
been explicitly disabled for the receiving device.

It also adds a similar check in target_xcopy_locate_se_dev_e4() to
ignore these devices when doing a search based upon the identifier
WWN provided by EXTENDED_COPY parameter list target descriptors.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2013-10-07 18:05:14 -07:00
parent 3f7a46c674
commit acb3f2600e
1 changed files with 9 additions and 0 deletions
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9
drivers/target/target_core_xcopy.c
View File

@ -82,6 +82,9 @@ static int target_xcopy_locate_se_dev_e4(struct se_cmd *se_cmd, struct xcopy_op
mutex_lock(&g_device_mutex);
list_for_each_entry(se_dev, &g_device_list, g_dev_node) {
if (!se_dev->dev_attrib.emulate_3pc)
continue;
memset(&tmp_dev_wwn[0], 0, XCOPY_NAA_IEEE_REGEX_LEN);
target_xcopy_gen_naa_ieee(se_dev, &tmp_dev_wwn[0]);
@ -884,12 +887,18 @@ out:
sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
{
struct se_device *dev = se_cmd->se_dev;
struct xcopy_op *xop = NULL;
unsigned char *p = NULL, *seg_desc;
unsigned int list_id, list_id_usage, sdll, inline_dl, sa;
int rc;
unsigned short tdll;
if (!dev->dev_attrib.emulate_3pc) {
pr_err("EXTENDED_COPY operation explicitly disabled\n");
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
sa = se_cmd->t_task_cdb[1] & 0x1f;
if (sa != 0x00) {
pr_err("EXTENDED_COPY(LID4) not supported\n");