+/*
+ * Get device identification VPD page for older SCSI-2 device which is not
+ * compliant with either SPC-2 or SPC-3 format.
+ *
+ * Return the hard coded error code value 2 if the page 83 reply is not
+ * conformant to the SCSI-2 format.
+ */
+static int do_scsi_page83_prespc3_inquiry(struct udev *udev,
+ struct scsi_id_device *dev_scsi, int fd,
+ char *serial, char *serial_short, int len)
+{
+ int retval;
+ int i, j;
+ unsigned char page_83[SCSI_INQ_BUFF_LEN];
+
+ memset(page_83, 0, SCSI_INQ_BUFF_LEN);
+ retval = scsi_inquiry(udev, dev_scsi, fd, 1, PAGE_83, page_83, SCSI_INQ_BUFF_LEN);
+ if (retval < 0)
+ return 1;
+
+ if (page_83[1] != PAGE_83) {
+ info(udev, "%s: Invalid page 0x83\n", dev_scsi->kernel);
+ return 1;
+ }
+ /*
+ * Model 4, 5, and (some) model 6 EMC Symmetrix devices return
+ * a page 83 reply according to SCSI-2 format instead of SPC-2/3.
+ *
+ * The SCSI-2 page 83 format returns an IEEE WWN in binary
+ * encoded hexi-decimal in the 16 bytes following the initial
+ * 4-byte page 83 reply header.
+ *
+ * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part
+ * of an Identification descriptor. The 3rd byte of the first
+ * Identification descriptor is a reserved (BSZ) byte field.
+ *
+ * Reference the 7th byte of the page 83 reply to determine
+ * whether the reply is compliant with SCSI-2 or SPC-2/3
+ * specifications. A zero value in the 7th byte indicates
+ * an SPC-2/3 conformant reply, (i.e., the reserved field of the
+ * first Identification descriptor). This byte will be non-zero
+ * for a SCSI-2 conformant page 83 reply from these EMC
+ * Symmetrix models since the 7th byte of the reply corresponds
+ * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is,
+ * 0x006048.
+ */
+ if (page_83[6] == 0)
+ return 2;
+
+ serial[0] = hex_str[id_search_list[0].id_type];
+ /*
+ * The first four bytes contain data, not a descriptor.
+ */
+ i = 4;
+ j = strlen(serial);
+ /*
+ * Binary descriptor, convert to ASCII,
+ * using two bytes of ASCII for each byte
+ * in the page_83.
+ */
+ while (i < (page_83[3]+4)) {
+ serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
+ serial[j++] = hex_str[page_83[i] & 0x0f];
+ i++;
+ }
+ dbg(udev, "using pre-spc3-83 for %s\n", dev_scsi->kernel);
+ return 0;
+}
+
+/* Get unit serial number VPD page */
+static int do_scsi_page80_inquiry(struct udev *udev,
+ struct scsi_id_device *dev_scsi, int fd,
+ char *serial, char *serial_short, int max_len)