[PATCH] add scsi_id "extra" program from Patrick Mansfield <patmans@us.ibm.com>

1 files changed, 735 insertions, 0 deletions

diff --git a/extras/scsi_id/scsi_serial.c b/extras/scsi_id/scsi_serial.c
new file mode 100644
index 0000000000..302429c0d4
--- /dev/null
+++ b/extras/scsi_id/scsi_serial.c
@@ -0,0 +1,735 @@
+/*
+ * scsi_serial.c
+ *
+ * Code related to requesting and getting an id from a scsi device
+ *
+ * Copyright (C) IBM Corp. 2003
+ *
+ *  This library is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as
+ *  published by the Free Software Foundation; either version 2.1 of the
+ *  License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ *  USA
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <scsi/sg.h>
+#include <sys/libsysfs.h>
+#include "scsi_id.h"
+#include "scsi.h"
+
+/*
+ * A priority based list of id, naa, and binary/ascii for the identifier
+ * descriptor in VPD page 0x83.
+ *
+ * Brute force search for a match starting with the first value in the
+ * following id_search_list. This is not a performance issue, since there
+ * is normally one or some small number of descriptors.
+ */
+static const struct scsi_id_search_values id_search_list[] = {
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_IEEE_REG_EXTENDED,	SCSI_ID_BINARY },
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_IEEE_REG_EXTENDED,	SCSI_ID_ASCII },
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_IEEE_REG,	SCSI_ID_BINARY },
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_IEEE_REG,	SCSI_ID_ASCII },
+	/*
+	 * Devices already exist using NAA values that are now marked
+	 * reserved. These should not conflict with other values, or it is
+	 * a bug in the device. As long as we find the IEEE extended one
+	 * first, we really don't care what other ones are used. Using
+	 * don't care here means that a device that returns multiple
+	 * non-IEEE descriptors in a random order will get different
+	 * names.
+	 */
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_BINARY },
+	{ SCSI_ID_NAA,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_ASCII },
+	{ SCSI_ID_EUI_64,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_BINARY },
+	{ SCSI_ID_EUI_64,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_ASCII },
+	{ SCSI_ID_T10_VENDOR,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_BINARY },
+	{ SCSI_ID_T10_VENDOR,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_ASCII },
+	{ SCSI_ID_VENDOR_SPECIFIC,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_BINARY },
+	{ SCSI_ID_VENDOR_SPECIFIC,	SCSI_ID_NAA_DONT_CARE,	SCSI_ID_ASCII },
+};
+
+static const char hex_str[]="0123456789abcdef";
+
+/*
+ * XXX maybe move all these to an sg_io.c file.
+ *
+ * From here ...
+ */
+
+/*
+ * Values returned in the result/status, only the ones used by the code
+ * are used here.
+ */
+
+#define DID_NO_CONNECT 0x01     /* Unable to connect before timeout */
+
+#define DID_BUS_BUSY 0x02       /* Bus remain busy until timeout */
+#define DID_TIME_OUT 0x03       /* Timed out for some other reason */
+
+#define DRIVER_TIMEOUT 0x06
+#define DRIVER_SENSE 0x08       /* Sense_buffer has been set */
+
+/* The following "category" function returns one of the following */
+#define SG_ERR_CAT_CLEAN	0      /* No errors or other information */
+#define SG_ERR_CAT_MEDIA_CHANGED	1 /* interpreted from sense buffer */
+#define SG_ERR_CAT_RESET	2      /* interpreted from sense buffer */
+#define SG_ERR_CAT_TIMEOUT	3
+#define SG_ERR_CAT_RECOVERED	4  /* Successful command after recovered err */
+#define SG_ERR_CAT_SENSE	98     /* Something else in the sense buffer */
+#define SG_ERR_CAT_OTHER	99     /* Some other error/warning */
+
+static int sg_err_category_new(int scsi_status, int msg_status, int
+			       host_status, int driver_status, const
+			       unsigned char *sense_buffer, int sb_len)
+{
+	scsi_status &= 0x7e;
+
+	/*
+	 * XXX change to return only two values - failed or OK.
+	 */
+
+	/*
+	 * checks msg_status
+	 */
+	if (!scsi_status && !msg_status && !host_status && !driver_status)
+		return SG_ERR_CAT_CLEAN;
+
+	if ((scsi_status == SCSI_CHECK_CONDITION) ||
+	    (scsi_status == SCSI_COMMAND_TERMINATED) ||
+	    ((driver_status & 0xf) == DRIVER_SENSE)) {
+		if (sense_buffer && (sb_len > 2)) {
+			int sense_key;
+			unsigned char asc;
+
+			if (sense_buffer[0] & 0x2) {
+				sense_key = sense_buffer[1] & 0xf;
+				asc = sense_buffer[2];
+			} else {
+				sense_key = sense_buffer[2] & 0xf;
+				asc = (sb_len > 12) ? sense_buffer[12] : 0;
+			}
+
+			if (sense_key == RECOVERED_ERROR)
+				return SG_ERR_CAT_RECOVERED;
+			else if (sense_key == UNIT_ATTENTION) {
+				if (0x28 == asc)
+					return SG_ERR_CAT_MEDIA_CHANGED;
+				if (0x29 == asc)
+					return SG_ERR_CAT_RESET;
+			}
+		}
+		return SG_ERR_CAT_SENSE;
+	}
+	if (!host_status) {
+		if ((host_status == DID_NO_CONNECT) ||
+		    (host_status == DID_BUS_BUSY) ||
+		    (host_status == DID_TIME_OUT))
+			return SG_ERR_CAT_TIMEOUT;
+	}
+	if (!driver_status) {
+		if (driver_status == DRIVER_TIMEOUT)
+			return SG_ERR_CAT_TIMEOUT;
+	}
+	return SG_ERR_CAT_OTHER;
+}
+
+static int sg_err_category3(struct sg_io_hdr *hp)
+{
+	return sg_err_category_new(hp->status, hp->msg_status,
+				   hp->host_status, hp->driver_status,
+				   hp->sbp, hp->sb_len_wr);
+}
+
+static int scsi_dump_sense(struct sysfs_class_device *scsi_dev,
+			   struct sg_io_hdr *io)
+{
+	unsigned char *sense_buffer;
+	int s;
+	int sb_len;
+	int code;
+	int sense_class;
+	int sense_key;
+	int descriptor_format;
+	int asc, ascq;
+#ifdef DUMP_SENSE
+	char out_buffer[256];
+	int i, j;
+#endif
+
+	/*
+	 * Figure out and print the sense key, asc and ascq.
+	 *
+	 * If you want to suppress these for a particular drive model, add
+	 * a black list entry in the scsi_id config file.
+	 *
+	 * XXX We probably need to: lookup the sense/asc/ascq in a retry
+	 * table, and if found return 1 (after dumping the sense, asc, and
+	 * ascq). So, if/when we get something like a power on/reset,
+	 * we'll retry the command.
+	 */
+
+	dprintf("got check condition\n");
+
+	sb_len = io->sb_len_wr;
+	if (sb_len < 1) {
+		log_message(LOG_WARNING, "%s: sense buffer empty\n",
+			    scsi_dev->name);
+		return -1;
+	}
+
+	sense_buffer = io->sbp;
+	sense_class = (sense_buffer[0] >> 4) & 0x07;
+	code = sense_buffer[0] & 0xf;
+
+	if (sense_class == 7) {
+		/*
+		 * extended sense data.
+		 */
+		s = sense_buffer[7] + 8;
+		if (sb_len < s) {
+			log_message(LOG_WARNING,
+				    "%s: sense buffer too small %d bytes,"
+				    " %d bytes too short\n", scsi_dev->name,
+				    sb_len, s - sb_len);
+			return -1;
+		}
+		if ((code == 0x0) || (code == 0x1)) {
+			descriptor_format = 0;
+			sense_key = sense_buffer[2] & 0xf;
+			if (s < 14) {
+				/*
+				 * Possible?
+				 */
+				log_message(LOG_WARNING, "%s: sense result too"
+					    " small %d bytes\n",
+					    scsi_dev->name, s);
+				return -1;
+			}
+			asc = sense_buffer[12];
+			ascq = sense_buffer[13];
+		} else if ((code == 0x2) || (code == 0x3)) {
+			descriptor_format = 1;
+			sense_key = sense_buffer[1] & 0xf;
+			asc = sense_buffer[2];
+			ascq = sense_buffer[3];
+		} else {
+			log_message(LOG_WARNING,
+				    "%s: invalid sense code 0x%x\n",
+				    scsi_dev->name, code);
+			return -1;
+		}
+		log_message(LOG_WARNING,
+			    "%s: sense key 0x%x ASC 0x%x ASCQ 0x%x\n",
+			    scsi_dev->name, sense_key, asc, ascq);
+	} else {
+		if (sb_len < 4) {
+			log_message(LOG_WARNING,
+				    "%s: sense buffer too small %d bytes, %d bytes too short\n",
+				    scsi_dev->name, sb_len, 4 - sb_len);
+			return -1;
+		}
+
+		if (sense_buffer[0] < 15)
+			log_message(LOG_WARNING, "%s: old sense key: 0x%x\n",
+				    scsi_dev->name, sense_buffer[0] & 0x0f);
+		else
+			log_message(LOG_WARNING, "%s: sense = %2x %2x\n",
+				    scsi_dev->name,  sense_buffer[0],
+				    sense_buffer[2]);
+		log_message(LOG_WARNING,
+			    "%s: non-extended sense class %d code 0x%0x ",
+			    scsi_dev->name, sense_class, code);
+
+	}
+
+#ifdef DUMP_SENSE
+	for (i = 0, j = 0; (i < s) && (j < 254); i++) {
+		dprintf("i %d, j %d\n", i, j);
+		out_buffer[j++] = hex_str[(sense_buffer[i] & 0xf0) >> 4];
+		out_buffer[j++] = hex_str[sense_buffer[i] & 0x0f];
+		out_buffer[j++] = ' ';
+	}
+	out_buffer[j] = '\0';
+	log_message(LOG_WARNING, "%s: sense dump:\n", scsi_dev->name);
+	log_message(LOG_WARNING, "%s: %s\n", scsi_dev->name, out_buffer);
+
+#endif
+	return -1;
+}
+
+static int scsi_dump(struct sysfs_class_device *scsi_dev, struct sg_io_hdr *io)
+{
+	if (!io->status && !io->host_status && !io->msg_status &&
+	    !io->driver_status) {
+		/*
+		 * Impossible, should not be called.
+		 */
+		log_message(LOG_WARNING, "%s: called with no error\n",
+			    __FUNCTION__);
+		return -1;
+	}
+
+	log_message(LOG_WARNING, "%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x\n",
+		    scsi_dev->name, io->driver_status, io->host_status,
+		    io->msg_status, io->status);
+	if (io->status == SCSI_CHECK_CONDITION)
+		return scsi_dump_sense(scsi_dev, io);
+	else
+		return -1;
+}
+
+static int scsi_inquiry(struct sysfs_class_device *scsi_dev, int fd,
+			unsigned char evpd, unsigned char page, unsigned
+			char *buf, unsigned int buflen)
+{
+	unsigned char inq_cmd[INQUIRY_CMDLEN] =
+		{ INQUIRY_CMD, evpd, page, 0, buflen, 0 };
+	unsigned char sense[SENSE_BUFF_LEN];
+	struct sg_io_hdr io_hdr;
+	int retval;
+	unsigned char *inq;
+	unsigned char *buffer;
+	int retry = 3; /* rather random */
+
+	if (buflen > 255) {
+		log_message(LOG_WARNING, "buflen %d too long\n", buflen);
+		return -1;
+	}
+	inq = malloc(OFFSET + sizeof (inq_cmd) + 512);
+	memset(inq, 0, OFFSET + sizeof (inq_cmd) + 512);
+	buffer = inq + OFFSET;
+
+resend:
+	memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
+	io_hdr.interface_id = 'S';
+	io_hdr.cmd_len = sizeof(inq_cmd);
+	io_hdr.mx_sb_len = sizeof(sense);
+	io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+	io_hdr.dxfer_len = buflen;
+	io_hdr.dxferp = buffer;
+	io_hdr.cmdp = inq_cmd;
+	io_hdr.sbp = sense;
+	io_hdr.timeout = DEF_TIMEOUT;
+
+	if (ioctl(fd, SG_IO, &io_hdr) < 0) {
+		log_message(LOG_WARNING, "%s ioctl failed: %s\n",
+			    scsi_dev->name, strerror(errno));
+		return -1;
+	}
+
+	retval = sg_err_category3(&io_hdr);
+
+	switch (retval) {
+		case SG_ERR_CAT_CLEAN:
+		case SG_ERR_CAT_RECOVERED:
+			retval = 0;
+			break;
+
+		default:
+			retval = scsi_dump(scsi_dev, &io_hdr);
+	}
+
+	if (!retval) {
+		retval = buflen;
+		memcpy(buf, buffer, retval);
+	} else if (retval > 0) {
+		if (--retry > 0) {
+			dprintf("%s: Retrying ...\n", scsi_dev->name);
+			goto resend;
+		}
+		retval = -1;
+	}
+
+	free(inq);
+	return retval;
+}
+
+/*
+ * XXX maybe move all these to an sg_io.c file.
+ *
+ * Ending here.
+ */
+
+int do_scsi_page0_inquiry(struct sysfs_class_device *scsi_dev, int fd,
+			  char *buffer, int len)
+{
+	int retval;
+	char *vendor;
+
+	memset(buffer, 0, len);
+	retval = scsi_inquiry(scsi_dev, fd, 1, 0x0, buffer, len);
+	if (retval < 0)
+		return 1;
+
+	if (buffer[1] != 0) {
+		log_message(LOG_WARNING, "%s: page 0 not available.\n",
+			    scsi_dev->name);
+		return 1;
+	}
+	if (buffer[3] > len) {
+		log_message(LOG_WARNING, "%s: page 0 buffer too long %d",
+			   scsi_dev->name,  buffer[3]);
+		return 1;
+	}
+
+	/*
+	 * Following check is based on code once included in the 2.5.x
+	 * kernel.
+	 *
+	 * Some ill behaved devices return the standard inquiry here
+	 * rather than the evpd data, snoop the data to verify.
+	 */
+	if (buffer[3] > MODEL_LENGTH) {
+		/*
+		 * If the vendor id appears in the page assume the page is
+		 * invalid.
+		 */
+		vendor = sysfs_get_attr(scsi_dev, "vendor");
+		if (!vendor) {
+			log_message(LOG_WARNING, "%s: no vendor attribute\n",
+				    scsi_dev->name);
+			return 1;
+		}
+		if (!strncmp(&buffer[VENDOR_LENGTH], vendor, VENDOR_LENGTH)) {
+			log_message(LOG_WARNING, "%s invalid page0 data\n",
+				    scsi_dev->name);
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * The caller checks that serial is long enough to include the vendor +
+ * model.
+ */
+static int prepend_vendor_model(struct sysfs_class_device *scsi_dev,
+				char *serial)
+{
+	char *attr;
+	int ind;
+
+	attr = sysfs_get_attr(scsi_dev, "vendor");
+	if (!attr) {
+		log_message(LOG_WARNING, "%s: no vendor attribute\n",
+			    scsi_dev->name);
+		return 1;
+	}
+	strncpy(serial, attr, VENDOR_LENGTH);
+	ind = strlen(serial) - 1;
+	/*
+	 * Remove sysfs added newlines.
+	 */
+	if (serial[ind] == '\n')
+		serial[ind] = '\0';
+
+	attr = sysfs_get_attr(scsi_dev, "model");
+	if (!attr) {
+		log_message(LOG_WARNING, "%s: no model attribute\n",
+			    scsi_dev->name);
+		return 1;
+	}
+	strncat(serial, attr, MODEL_LENGTH);
+	ind = strlen(serial) - 1;
+	if (serial[ind] == '\n')
+		serial[ind] = '\0';
+	else
+		ind++;
+
+	/*
+	 * This is not a complete check, since we are using strncat/cpy
+	 * above, ind will never be too large.
+	 */
+	if (ind != (VENDOR_LENGTH + MODEL_LENGTH)) {
+		log_message(LOG_WARNING, "%s: expected length %d, got length %d\n",
+			    scsi_dev->name, (VENDOR_LENGTH + MODEL_LENGTH),
+			    ind);
+		return 1;
+	}
+	return ind;
+}
+
+/**
+ * check_fill_0x83_id - check the page 0x83 id, if OK allocate and fill
+ * serial number.
+ **/
+static int check_fill_0x83_id(struct sysfs_class_device *scsi_dev,
+			      char *page_83,
+			      const struct scsi_id_search_values *id_search,
+			      char *serial, int max_len)
+{
+	int i, j, len;
+
+	/*
+	 * ASSOCIATION must be with the device (value 0)
+	 */
+	if ((page_83[1] & 0x30) != 0)
+		return 1;
+
+	if ((page_83[1] & 0x0f) != id_search->id_type)
+		return 1;
+
+	/*
+	 * Possibly check NAA sub-type.
+	 */
+	if ((id_search->naa_type != SCSI_ID_NAA_DONT_CARE) &&
+	    (id_search->naa_type != (page_83[4] & 0xf0) >> 4))
+		return 1;
+
+	/*
+	 * Check for matching code set - ASCII or BINARY.
+	 */
+	if ((page_83[0] & 0x0f) != id_search->code_set)
+		return 1;
+
+	/*
+	 * page_83[3]: identifier length
+	 */
+	len = page_83[3];
+	if ((page_83[0] & 0x0f) != SCSI_ID_ASCII)
+		/*
+		 * If not ASCII, use two bytes for each binary value.
+		 */
+		len *= 2;
+
+       	/*
+	 * Add one byte for the NUL termination, and one for the id_type.
+	 */
+	len += 2;
+	if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
+		len += VENDOR_LENGTH + MODEL_LENGTH;
+
+	if (max_len < len) {
+		log_message(LOG_WARNING, "%s: length %d too short - need %d\n",
+			    scsi_dev->name, max_len, len);
+		return 1;
+	}
+
+	serial[0] = hex_str[id_search->id_type];
+
+	/*
+	 * Prepend the vendor and model before the id since if it is not
+	 * unique across all vendors and models.
+	 */
+	if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
+		if (prepend_vendor_model(scsi_dev, &serial[1]) < 0) {
+			dprintf("prepend failed\n");
+			return 1;
+		}
+
+	i = 4; /* offset to the start of the identifier */
+	j = strlen(serial);
+	if ((page_83[0] & 0x0f) == SCSI_ID_ASCII) {
+		/*
+		 * ASCII descriptor.
+		 */
+		while (i < (4 + page_83[3]))
+			serial[j++] = page_83[i++];
+	} else {
+		/*
+		 * Binary descriptor, convert to ASCII, using two bytes of
+		 * ASCII for each byte in the page_83.
+		 */
+		while (i < (4 + page_83[3])) {
+			serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
+			serial[j++] = hex_str[page_83[i] & 0x0f];
+			i++;
+		}
+	}
+	return 0;
+}
+
+static int do_scsi_page83_inquiry(struct sysfs_class_device *scsi_dev, int fd,
+				  char *serial, int len)
+{
+	int retval;
+	int id_ind, j;
+	unsigned char page_83[256];
+
+	memset(page_83, 0, 256);
+	retval = scsi_inquiry(scsi_dev, fd, 1, 0x83, page_83, 255);
+	if (retval < 0)
+		return 1;
+
+	if (page_83[1] != 0x83) {
+		log_message(LOG_WARNING, "%s: Invalid page 0x83\n",
+			    scsi_dev->name);
+		return 1;
+	}
+
+	/*
+	 * Search for a match in the prioritized id_search_list.
+	 */
+	for (id_ind = 0;
+	     id_ind < sizeof(id_search_list)/sizeof(id_search_list[0]);
+	     id_ind++) {
+		/*
+		 * Examine each descriptor returned. There is normally only
+		 * one or a small number of descriptors.
+		 */
+		for (j = 4; j <= page_83[3] + 3;
+			j += page_83[j + 3] + 4) {
+			retval = check_fill_0x83_id(scsi_dev, &page_83[j],
+						    &id_search_list[id_ind],
+						    serial, len);
+			dprintf("%s id desc %d/%d/%d\n", scsi_dev->name,
+				id_search_list[id_ind].id_type,
+				id_search_list[id_ind].naa_type,
+				id_search_list[id_ind].code_set);
+			if (!retval) {
+				dprintf("	used\n");
+				return retval;
+			} else if (retval < 0) {
+				dprintf("	failed\n");
+				return retval;
+			} else {
+				dprintf("	not used\n");
+			}
+		}
+	}
+	return 1;
+}
+
+int do_scsi_page80_inquiry(struct sysfs_class_device *scsi_dev, int fd,
+			   char *serial, int max_len)
+{
+	int retval;
+	int ser_ind;
+	int i;
+	int len;
+	unsigned char buf[256];
+
+	memset(buf, 0, 256);
+	retval = scsi_inquiry(scsi_dev, fd, 1, 0x80, buf, 255);
+	if (retval < 0)
+		return retval;
+
+	if (buf[1] != 0x80) {
+		log_message(LOG_WARNING, "%s: Invalid page 0x80\n",
+			    scsi_dev->name);
+		return 1;
+	}
+
+	len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3];
+	if (max_len < len) {
+		log_message(LOG_WARNING, "%s: length %d too short - need %d\n",
+			    scsi_dev->name, max_len, len);
+		return 1;
+	}
+	/*
+	 * Prepend 'S' to avoid unlikely collision with page 0x83 vendor
+	 * specific type where we prepend '0' + vendor + model.
+	 */
+	serial[0] = 'S';
+	ser_ind = prepend_vendor_model(scsi_dev, &serial[1]);
+	if (ser_ind < 0)
+		return 1;
+	len = buf[3];
+	for (i = 4; i < len + 4; i++, ser_ind++)
+		serial[ser_ind] = buf[i];
+	return 0;
+}
+
+int scsi_get_serial (struct sysfs_class_device *scsi_dev, const char *devname,
+		     int page_code, char *serial, int len)
+{
+	unsigned char page0[256];
+	int fd;
+	int ind;
+	int retval;
+
+	if (len > 255) {
+	}
+	memset(serial, 0, len);
+	dprintf("opening %s\n", devname);
+	fd = open(devname, O_RDONLY);
+	if (fd < 0) {
+		log_message(LOG_WARNING, "%s cannot open %s: %s\n",
+			    scsi_dev->name, devname, strerror(errno));
+		return 1;
+	}
+
+	if (page_code == 0x80) {
+		if (do_scsi_page80_inquiry(scsi_dev, fd, serial, len)) {
+			retval = 1;
+			goto completed;
+		} else  {
+			retval = 0;
+			goto completed;
+		}
+	} else if (page_code == 0x83) {
+		if (do_scsi_page83_inquiry(scsi_dev, fd, serial, len)) {
+			retval = 1;
+			goto completed;
+		} else  {
+			retval = 0;
+			goto completed;
+		}
+	} else if (page_code != 0x00) {
+		log_message(LOG_WARNING, "%s unsupported page code 0x%d\n",
+			    scsi_dev->name, page_code);
+		return 1;
+	}
+
+	/*
+	 * Get page 0, the page of the pages. By default, try from best to
+	 * worst of supported pages: 0x83 then 0x80.
+	 */
+	if (do_scsi_page0_inquiry(scsi_dev, fd, page0, 255)) {
+		/*
+		 * Don't try anything else. Black list if a specific page
+		 * should be used for this vendor+model, or maybe have an
+		 * optional fall-back to page 0x80 or page 0x83.
+		 */
+		retval = 1;
+		goto completed;
+	}
+
+	dprintf("%s: Checking page0\n", scsi_dev->name);
+
+	for (ind = 4; ind <= page0[3] + 3; ind++)
+		if (page0[ind] == 0x83)
+			if (!do_scsi_page83_inquiry(scsi_dev, fd, serial,
+						    len)) {
+				/*
+				 * Success
+				 */
+				retval = 0;
+				goto completed;
+			}
+
+	for (ind = 4; ind <= page0[3] + 3; ind++)
+		if (page0[ind] == 0x80)
+			if (!do_scsi_page80_inquiry(scsi_dev, fd, serial,
+						    len)) {
+				/*
+				 * Success
+				 */
+				retval = 0;
+				goto completed;
+			}
+	retval = 1;
+completed:
+	if (close(fd) < 0)
+		log_message(LOG_WARNING, "close failed: %s", strerror(errno));
+	return retval;
+}