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Diffstat (limited to 'extras/scsi_id/scsi_serial.c')
-rw-r--r--extras/scsi_id/scsi_serial.c735
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;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-15 14:50:31 +0000