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authorNicholas Bellinger <nab@linux-iscsi.org>2013-10-08 05:05:14 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2013-10-09 12:54:44 +0400
commitacb3f2600eb8cdd35643a8b9237719ce61c98d41 (patch)
tree38d93b11145669f061c84bac3932b9c9b9c08f32 /drivers/target
parent3f7a46c67440a7fa422919ab2059cbab838ca558 (diff)
downloadlinux-acb3f2600eb8cdd35643a8b9237719ce61c98d41.tar.xz
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>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_xcopy.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index fe985559eeb8..eeeaf99387ce 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -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");