target: change sprintf to snprintf in transport_dump_vpd_ident

"buf" is 128 characters and "vpd->device_identifier" is 256.  It makes
the static checkers complain.

Also bump VPD_TMP_BUF_SIZE to match INQUIRY_VPD_DEVICE_IDENTIFIER_LEN.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_transport.c

@@ -907,15 +907,18 @@ int transport_dump_vpd_ident(
 
 	switch (vpd->device_identifier_code_set) {
 	case 0x01: /* Binary */
-		sprintf(buf, "T10 VPD Binary Device Identifier: %s\n",
+		snprintf(buf, sizeof(buf),
+			"T10 VPD Binary Device Identifier: %s\n",
 			&vpd->device_identifier[0]);
 		break;
 	case 0x02: /* ASCII */
-		sprintf(buf, "T10 VPD ASCII Device Identifier: %s\n",
+		snprintf(buf, sizeof(buf),
+			"T10 VPD ASCII Device Identifier: %s\n",
 			&vpd->device_identifier[0]);
 		break;
 	case 0x03: /* UTF-8 */
-		sprintf(buf, "T10 VPD UTF-8 Device Identifier: %s\n",
+		snprintf(buf, sizeof(buf),
+			"T10 VPD UTF-8 Device Identifier: %s\n",
 			&vpd->device_identifier[0]);
 		break;
 	default:

include/target/target_core_base.h

@@ -44,7 +44,7 @@
 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
 #define TG_PT_GROUP_NAME_BUF			256
 /* Used to parse VPD into struct t10_vpd */
-#define VPD_TMP_BUF_SIZE			128
+#define VPD_TMP_BUF_SIZE			254
 /* Used by transport_generic_cmd_sequencer() */
 #define READ_BLOCK_LEN          		6
 #define READ_CAP_LEN            		8