4 * Code related to requesting and getting an id from a scsi device
6 * Copyright (C) IBM Corp. 2003
9 * Patrick Mansfield<patmans@us.ibm.com>
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation version 2 of the License.
16 #include <sys/types.h>
17 #include <sys/ioctl.h>
27 #include <scsi/scsi.h>
29 #include <linux/types.h>
30 /* #include <linux/bsg.h> */
33 #include "../../udev/udev.h"
38 * A priority based list of id, naa, and binary/ascii for the identifier
39 * descriptor in VPD page 0x83.
41 * Brute force search for a match starting with the first value in the
42 * following id_search_list. This is not a performance issue, since there
43 * is normally one or some small number of descriptors.
45 static const struct scsi_id_search_values id_search_list[] = {
46 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_BINARY },
47 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_ASCII },
48 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_BINARY },
49 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_ASCII },
51 * Devices already exist using NAA values that are now marked
52 * reserved. These should not conflict with other values, or it is
53 * a bug in the device. As long as we find the IEEE extended one
54 * first, we really don't care what other ones are used. Using
55 * don't care here means that a device that returns multiple
56 * non-IEEE descriptors in a random order will get different
59 { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
60 { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
61 { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
62 { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
63 { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
64 { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
65 { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
66 { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
69 static const char hex_str[]="0123456789abcdef";
72 * Values returned in the result/status, only the ones used by the code
76 #define DID_NO_CONNECT 0x01 /* Unable to connect before timeout */
77 #define DID_BUS_BUSY 0x02 /* Bus remain busy until timeout */
78 #define DID_TIME_OUT 0x03 /* Timed out for some other reason */
79 #define DRIVER_TIMEOUT 0x06
80 #define DRIVER_SENSE 0x08 /* Sense_buffer has been set */
82 /* The following "category" function returns one of the following */
83 #define SG_ERR_CAT_CLEAN 0 /* No errors or other information */
84 #define SG_ERR_CAT_MEDIA_CHANGED 1 /* interpreted from sense buffer */
85 #define SG_ERR_CAT_RESET 2 /* interpreted from sense buffer */
86 #define SG_ERR_CAT_TIMEOUT 3
87 #define SG_ERR_CAT_RECOVERED 4 /* Successful command after recovered err */
88 #define SG_ERR_CAT_NOTSUPPORTED 5 /* Illegal / unsupported command */
89 #define SG_ERR_CAT_SENSE 98 /* Something else in the sense buffer */
90 #define SG_ERR_CAT_OTHER 99 /* Some other error/warning */
92 static int sg_err_category_new(int scsi_status, int msg_status, int
93 host_status, int driver_status, const
94 unsigned char *sense_buffer, int sb_len)
99 * XXX change to return only two values - failed or OK.
102 if (!scsi_status && !host_status && !driver_status)
103 return SG_ERR_CAT_CLEAN;
105 if ((scsi_status == SCSI_CHECK_CONDITION) ||
106 (scsi_status == SCSI_COMMAND_TERMINATED) ||
107 ((driver_status & 0xf) == DRIVER_SENSE)) {
108 if (sense_buffer && (sb_len > 2)) {
112 if (sense_buffer[0] & 0x2) {
113 sense_key = sense_buffer[1] & 0xf;
114 asc = sense_buffer[2];
116 sense_key = sense_buffer[2] & 0xf;
117 asc = (sb_len > 12) ? sense_buffer[12] : 0;
120 if (sense_key == RECOVERED_ERROR)
121 return SG_ERR_CAT_RECOVERED;
122 else if (sense_key == UNIT_ATTENTION) {
124 return SG_ERR_CAT_MEDIA_CHANGED;
126 return SG_ERR_CAT_RESET;
127 } else if (sense_key == ILLEGAL_REQUEST) {
128 return SG_ERR_CAT_NOTSUPPORTED;
131 return SG_ERR_CAT_SENSE;
134 if ((host_status == DID_NO_CONNECT) ||
135 (host_status == DID_BUS_BUSY) ||
136 (host_status == DID_TIME_OUT))
137 return SG_ERR_CAT_TIMEOUT;
139 if (!driver_status) {
140 if (driver_status == DRIVER_TIMEOUT)
141 return SG_ERR_CAT_TIMEOUT;
143 return SG_ERR_CAT_OTHER;
146 static int sg_err_category3(struct sg_io_hdr *hp)
148 return sg_err_category_new(hp->status, hp->msg_status,
149 hp->host_status, hp->driver_status,
150 hp->sbp, hp->sb_len_wr);
153 static int sg_err_category4(struct sg_io_v4 *hp)
155 return sg_err_category_new(hp->device_status, 0,
156 hp->transport_status, hp->driver_status,
157 (unsigned char *)hp->response,
161 static int scsi_dump_sense(struct scsi_id_device *dev_scsi,
162 unsigned char *sense_buffer, int sb_len)
168 int descriptor_format;
171 char out_buffer[256];
176 * Figure out and print the sense key, asc and ascq.
178 * If you want to suppress these for a particular drive model, add
179 * a black list entry in the scsi_id config file.
181 * XXX We probably need to: lookup the sense/asc/ascq in a retry
182 * table, and if found return 1 (after dumping the sense, asc, and
183 * ascq). So, if/when we get something like a power on/reset,
184 * we'll retry the command.
187 dbg("got check condition\n");
190 info("%s: sense buffer empty\n", dev_scsi->kernel);
194 sense_class = (sense_buffer[0] >> 4) & 0x07;
195 code = sense_buffer[0] & 0xf;
197 if (sense_class == 7) {
199 * extended sense data.
201 s = sense_buffer[7] + 8;
203 info("%s: sense buffer too small %d bytes, %d bytes too short\n",
204 dev_scsi->kernel, sb_len, s - sb_len);
207 if ((code == 0x0) || (code == 0x1)) {
208 descriptor_format = 0;
209 sense_key = sense_buffer[2] & 0xf;
214 info("%s: sense result too" " small %d bytes\n",
215 dev_scsi->kernel, s);
218 asc = sense_buffer[12];
219 ascq = sense_buffer[13];
220 } else if ((code == 0x2) || (code == 0x3)) {
221 descriptor_format = 1;
222 sense_key = sense_buffer[1] & 0xf;
223 asc = sense_buffer[2];
224 ascq = sense_buffer[3];
226 info("%s: invalid sense code 0x%x\n",
227 dev_scsi->kernel, code);
230 info("%s: sense key 0x%x ASC 0x%x ASCQ 0x%x\n",
231 dev_scsi->kernel, sense_key, asc, ascq);
234 info("%s: sense buffer too small %d bytes, %d bytes too short\n",
235 dev_scsi->kernel, sb_len, 4 - sb_len);
239 if (sense_buffer[0] < 15)
240 info("%s: old sense key: 0x%x\n", dev_scsi->kernel, sense_buffer[0] & 0x0f);
242 info("%s: sense = %2x %2x\n",
243 dev_scsi->kernel, sense_buffer[0], sense_buffer[2]);
244 info("%s: non-extended sense class %d code 0x%0x\n",
245 dev_scsi->kernel, sense_class, code);
250 for (i = 0, j = 0; (i < s) && (j < 254); i++) {
251 dbg("i %d, j %d\n", i, j);
252 out_buffer[j++] = hex_str[(sense_buffer[i] & 0xf0) >> 4];
253 out_buffer[j++] = hex_str[sense_buffer[i] & 0x0f];
254 out_buffer[j++] = ' ';
256 out_buffer[j] = '\0';
257 info("%s: sense dump:\n", dev_scsi->kernel);
258 info("%s: %s\n", dev_scsi->kernel, out_buffer);
264 static int scsi_dump(struct scsi_id_device *dev_scsi, struct sg_io_hdr *io)
266 if (!io->status && !io->host_status && !io->msg_status &&
267 !io->driver_status) {
269 * Impossible, should not be called.
271 info("%s: called with no error\n", __FUNCTION__);
275 info("%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x\n",
276 dev_scsi->kernel, io->driver_status, io->host_status, io->msg_status, io->status);
277 if (io->status == SCSI_CHECK_CONDITION)
278 return scsi_dump_sense(dev_scsi, io->sbp, io->sb_len_wr);
283 static int scsi_dump_v4(struct scsi_id_device *dev_scsi, struct sg_io_v4 *io)
285 if (!io->device_status && !io->transport_status &&
286 !io->driver_status) {
288 * Impossible, should not be called.
290 info("%s: called with no error\n", __FUNCTION__);
294 info("%s: sg_io failed status 0x%x 0x%x 0x%x\n",
295 dev_scsi->kernel, io->driver_status, io->transport_status,
297 if (io->device_status == SCSI_CHECK_CONDITION)
298 return scsi_dump_sense(dev_scsi, (unsigned char *)io->response,
304 static int scsi_inquiry(struct scsi_id_device *dev_scsi, int fd,
305 unsigned char evpd, unsigned char page,
306 unsigned char *buf, unsigned int buflen)
308 unsigned char inq_cmd[INQUIRY_CMDLEN] =
309 { INQUIRY_CMD, evpd, page, 0, buflen, 0 };
310 unsigned char sense[SENSE_BUFF_LEN];
313 int retry = 3; /* rather random */
315 if (buflen > SCSI_INQ_BUFF_LEN) {
316 info("buflen %d too long\n", buflen);
321 dbg("%s evpd %d, page 0x%x\n", dev_scsi->kernel, evpd, page);
323 if (dev_scsi->use_sg == 4) {
324 struct sg_io_v4 io_v4;
326 memset(&io_v4, 0, sizeof(struct sg_io_v4));
328 io_v4.protocol = BSG_PROTOCOL_SCSI;
329 io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
330 io_v4.request_len = sizeof(inq_cmd);
331 io_v4.request = (uintptr_t)inq_cmd;
332 io_v4.max_response_len = sizeof(sense);
333 io_v4.response = (uintptr_t)sense;
334 io_v4.din_xfer_len = buflen;
335 io_v4.din_xferp = (uintptr_t)buf;
336 io_buf = (void *)&io_v4;
338 struct sg_io_hdr io_hdr;
340 memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
341 io_hdr.interface_id = 'S';
342 io_hdr.cmd_len = sizeof(inq_cmd);
343 io_hdr.mx_sb_len = sizeof(sense);
344 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
345 io_hdr.dxfer_len = buflen;
347 io_hdr.cmdp = inq_cmd;
349 io_hdr.timeout = DEF_TIMEOUT;
350 io_buf = (void *)&io_hdr;
353 retval = ioctl(fd, SG_IO, io_buf);
355 if ((errno == EINVAL || errno == ENOSYS) && dev_scsi->use_sg == 4) {
356 dev_scsi->use_sg = 3;
359 info("%s: ioctl failed: %s\n", dev_scsi->kernel, strerror(errno));
363 if (dev_scsi->use_sg == 4)
364 retval = sg_err_category4(io_buf);
366 retval = sg_err_category3(io_buf);
369 case SG_ERR_CAT_NOTSUPPORTED:
372 case SG_ERR_CAT_CLEAN:
373 case SG_ERR_CAT_RECOVERED:
378 if (dev_scsi->use_sg == 4)
379 retval = scsi_dump_v4(dev_scsi, io_buf);
381 retval = scsi_dump(dev_scsi, io_buf);
386 } else if (retval > 0) {
388 dbg("%s: Retrying ...\n", dev_scsi->kernel);
396 info("%s: Unable to get INQUIRY vpd %d page 0x%x.\n",
397 dev_scsi->kernel, evpd, page);
402 /* Get list of supported EVPD pages */
403 static int do_scsi_page0_inquiry(struct scsi_id_device *dev_scsi, int fd,
404 unsigned char *buffer, unsigned int len)
408 memset(buffer, 0, len);
409 retval = scsi_inquiry(dev_scsi, fd, 1, 0x0, buffer, len);
413 if (buffer[1] != 0) {
414 info("%s: page 0 not available.\n", dev_scsi->kernel);
417 if (buffer[3] > len) {
418 info("%s: page 0 buffer too long %d\n", dev_scsi->kernel, buffer[3]);
423 * Following check is based on code once included in the 2.5.x
426 * Some ill behaved devices return the standard inquiry here
427 * rather than the evpd data, snoop the data to verify.
429 if (buffer[3] > MODEL_LENGTH) {
431 * If the vendor id appears in the page assume the page is
434 if (!strncmp((char *)&buffer[VENDOR_LENGTH], dev_scsi->vendor, VENDOR_LENGTH)) {
435 info("%s: invalid page0 data\n", dev_scsi->kernel);
443 * The caller checks that serial is long enough to include the vendor +
446 static int prepend_vendor_model(struct scsi_id_device *dev_scsi, char *serial)
450 strncpy(serial, dev_scsi->vendor, VENDOR_LENGTH);
451 ind = strlen(serial) - 1;
453 strncat(serial, dev_scsi->model, MODEL_LENGTH);
454 ind = strlen(serial) - 1;
458 * This is not a complete check, since we are using strncat/cpy
459 * above, ind will never be too large.
461 if (ind != (VENDOR_LENGTH + MODEL_LENGTH)) {
462 info("%s: expected length %d, got length %d\n",
463 dev_scsi->kernel, (VENDOR_LENGTH + MODEL_LENGTH), ind);
470 * check_fill_0x83_id - check the page 0x83 id, if OK allocate and fill
473 static int check_fill_0x83_id(struct scsi_id_device *dev_scsi,
474 unsigned char *page_83,
475 const struct scsi_id_search_values
476 *id_search, char *serial, char *serial_short, int max_len)
481 * ASSOCIATION must be with the device (value 0)
483 if ((page_83[1] & 0x30) != 0)
486 if ((page_83[1] & 0x0f) != id_search->id_type)
490 * Possibly check NAA sub-type.
492 if ((id_search->naa_type != SCSI_ID_NAA_DONT_CARE) &&
493 (id_search->naa_type != (page_83[4] & 0xf0) >> 4))
497 * Check for matching code set - ASCII or BINARY.
499 if ((page_83[0] & 0x0f) != id_search->code_set)
503 * page_83[3]: identifier length
506 if ((page_83[0] & 0x0f) != SCSI_ID_ASCII)
508 * If not ASCII, use two bytes for each binary value.
513 * Add one byte for the NUL termination, and one for the id_type.
516 if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
517 len += VENDOR_LENGTH + MODEL_LENGTH;
520 info("%s: length %d too short - need %d\n",
521 dev_scsi->kernel, max_len, len);
525 serial[0] = hex_str[id_search->id_type];
528 * For SCSI_ID_VENDOR_SPECIFIC prepend the vendor and model before
529 * the id since it is not unique across all vendors and models,
530 * this differs from SCSI_ID_T10_VENDOR, where the vendor is
531 * included in the identifier.
533 if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
534 if (prepend_vendor_model(dev_scsi, &serial[1]) < 0) {
535 dbg("prepend failed\n");
539 i = 4; /* offset to the start of the identifier */
540 s = j = strlen(serial);
541 if ((page_83[0] & 0x0f) == SCSI_ID_ASCII) {
545 while (i < (4 + page_83[3]))
546 serial[j++] = page_83[i++];
549 * Binary descriptor, convert to ASCII, using two bytes of
550 * ASCII for each byte in the page_83.
552 while (i < (4 + page_83[3])) {
553 serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
554 serial[j++] = hex_str[page_83[i] & 0x0f];
559 strcpy(serial_short, &serial[s]);
563 /* Extract the raw binary from VPD 0x83 pre-SPC devices */
564 static int check_fill_0x83_prespc3(struct scsi_id_device *dev_scsi,
565 unsigned char *page_83,
566 const struct scsi_id_search_values
567 *id_search, char *serial, char *serial_short, int max_len)
571 dbg("using pre-spc3-83 for %s\n", dev_scsi->kernel);
572 serial[0] = hex_str[id_search->id_type];
573 /* serial has been memset to zero before */
574 j = strlen(serial); /* j = 1; */
576 for (i = 0; i < page_83[3]; ++i) {
577 serial[j++] = hex_str[(page_83[4+i] & 0xf0) >> 4];
578 serial[j++] = hex_str[ page_83[4+i] & 0x0f];
580 strcpy(serial_short, serial);
585 /* Get device identification VPD page */
586 static int do_scsi_page83_inquiry(struct scsi_id_device *dev_scsi, int fd,
587 char *serial, char *serial_short, int len)
590 unsigned int id_ind, j;
591 unsigned char page_83[SCSI_INQ_BUFF_LEN];
593 memset(page_83, 0, SCSI_INQ_BUFF_LEN);
594 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_83, page_83,
599 if (page_83[1] != PAGE_83) {
600 info("%s: Invalid page 0x83\n", dev_scsi->kernel);
605 * XXX Some devices (IBM 3542) return all spaces for an identifier if
606 * the LUN is not actually configured. This leads to identifers of
611 * Model 4, 5, and (some) model 6 EMC Symmetrix devices return
612 * a page 83 reply according to SCSI-2 format instead of SPC-2/3.
614 * The SCSI-2 page 83 format returns an IEEE WWN in binary
615 * encoded hexi-decimal in the 16 bytes following the initial
616 * 4-byte page 83 reply header.
618 * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part
619 * of an Identification descriptor. The 3rd byte of the first
620 * Identification descriptor is a reserved (BSZ) byte field.
622 * Reference the 7th byte of the page 83 reply to determine
623 * whether the reply is compliant with SCSI-2 or SPC-2/3
624 * specifications. A zero value in the 7th byte indicates
625 * an SPC-2/3 conformant reply, (i.e., the reserved field of the
626 * first Identification descriptor). This byte will be non-zero
627 * for a SCSI-2 conformant page 83 reply from these EMC
628 * Symmetrix models since the 7th byte of the reply corresponds
629 * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is,
634 return check_fill_0x83_prespc3(dev_scsi, page_83, id_search_list,
635 serial, serial_short, len);
638 * Search for a match in the prioritized id_search_list.
641 id_ind < sizeof(id_search_list)/sizeof(id_search_list[0]);
644 * Examine each descriptor returned. There is normally only
645 * one or a small number of descriptors.
647 for (j = 4; j <= (unsigned int)page_83[3] + 3; j += page_83[j + 3] + 4) {
648 retval = check_fill_0x83_id(dev_scsi, &page_83[j],
649 &id_search_list[id_ind],
650 serial, serial_short, len);
651 dbg("%s id desc %d/%d/%d\n", dev_scsi->kernel,
652 id_search_list[id_ind].id_type,
653 id_search_list[id_ind].naa_type,
654 id_search_list[id_ind].code_set);
658 } else if (retval < 0) {
670 * Get device identification VPD page for older SCSI-2 device which is not
671 * compliant with either SPC-2 or SPC-3 format.
673 * Return the hard coded error code value 2 if the page 83 reply is not
674 * conformant to the SCSI-2 format.
676 static int do_scsi_page83_prespc3_inquiry(struct scsi_id_device *dev_scsi, int fd,
677 char *serial, char *serial_short, int len)
681 unsigned char page_83[SCSI_INQ_BUFF_LEN];
683 memset(page_83, 0, SCSI_INQ_BUFF_LEN);
684 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_83, page_83, SCSI_INQ_BUFF_LEN);
688 if (page_83[1] != PAGE_83) {
689 info("%s: Invalid page 0x83\n", dev_scsi->kernel);
693 * Model 4, 5, and (some) model 6 EMC Symmetrix devices return
694 * a page 83 reply according to SCSI-2 format instead of SPC-2/3.
696 * The SCSI-2 page 83 format returns an IEEE WWN in binary
697 * encoded hexi-decimal in the 16 bytes following the initial
698 * 4-byte page 83 reply header.
700 * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part
701 * of an Identification descriptor. The 3rd byte of the first
702 * Identification descriptor is a reserved (BSZ) byte field.
704 * Reference the 7th byte of the page 83 reply to determine
705 * whether the reply is compliant with SCSI-2 or SPC-2/3
706 * specifications. A zero value in the 7th byte indicates
707 * an SPC-2/3 conformant reply, (i.e., the reserved field of the
708 * first Identification descriptor). This byte will be non-zero
709 * for a SCSI-2 conformant page 83 reply from these EMC
710 * Symmetrix models since the 7th byte of the reply corresponds
711 * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is,
717 serial[0] = hex_str[id_search_list[0].id_type];
719 * The first four bytes contain data, not a descriptor.
724 * Binary descriptor, convert to ASCII,
725 * using two bytes of ASCII for each byte
728 while (i < (page_83[3]+4)) {
729 serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
730 serial[j++] = hex_str[page_83[i] & 0x0f];
733 dbg("using pre-spc3-83 for %s\n", dev_scsi->kernel);
737 /* Get unit serial number VPD page */
738 static int do_scsi_page80_inquiry(struct scsi_id_device *dev_scsi, int fd,
739 char *serial, char *serial_short, int max_len)
745 unsigned char buf[SCSI_INQ_BUFF_LEN];
747 memset(buf, 0, SCSI_INQ_BUFF_LEN);
748 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_80, buf, SCSI_INQ_BUFF_LEN);
752 if (buf[1] != PAGE_80) {
753 info("%s: Invalid page 0x80\n", dev_scsi->kernel);
757 len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3];
759 info("%s: length %d too short - need %d\n",
760 dev_scsi->kernel, max_len, len);
764 * Prepend 'S' to avoid unlikely collision with page 0x83 vendor
765 * specific type where we prepend '0' + vendor + model.
768 ser_ind = prepend_vendor_model(dev_scsi, &serial[1]);
772 for (i = 4; i < len + 4; i++, ser_ind++)
773 serial[ser_ind] = buf[i];
774 memcpy(serial_short, &buf[4], len);
775 serial_short[len] = '\0';
779 int scsi_std_inquiry(struct scsi_id_device *dev_scsi, const char *devname)
782 unsigned char buf[SCSI_INQ_BUFF_LEN];
786 dbg("opening %s\n", devname);
787 fd = open(devname, O_RDONLY | O_NONBLOCK);
789 info("scsi_id: cannot open %s: %s\n",
790 devname, strerror(errno));
794 if (fstat(fd, &statbuf) < 0) {
795 info("scsi_id: cannot stat %s: %s\n",
796 devname, strerror(errno));
800 sprintf(dev_scsi->kernel,"%d:%d", major(statbuf.st_rdev),
801 minor(statbuf.st_rdev));
803 memset(buf, 0, SCSI_INQ_BUFF_LEN);
804 err = scsi_inquiry(dev_scsi, fd, 0, 0, buf, SCSI_INQ_BUFF_LEN);
809 memcpy(dev_scsi->vendor, buf + 8, 8);
810 dev_scsi->vendor[8] = '\0';
811 memcpy(dev_scsi->model, buf + 16, 16);
812 dev_scsi->model[16] = '\0';
813 memcpy(dev_scsi->revision, buf + 32, 4);
814 dev_scsi->revision[4] = '\0';
815 sprintf(dev_scsi->type,"%x", buf[0] & 0x1f);
822 int scsi_get_serial (struct scsi_id_device *dev_scsi, const char *devname,
823 int page_code, char *serial_short, int len)
825 unsigned char page0[SCSI_INQ_BUFF_LEN];
831 memset(dev_scsi->serial, 0, len);
832 dbg("opening %s\n", devname);
834 fd = open(devname, O_RDONLY | O_NONBLOCK);
837 info("%s: cannot open %s: %s\n", dev_scsi->kernel, devname, strerror(errno));
840 usleep(500000 + (rand() % 100000) );
845 if (page_code == PAGE_80) {
846 if (do_scsi_page80_inquiry(dev_scsi, fd, dev_scsi->serial, serial_short, len)) {
853 } else if (page_code == PAGE_83) {
854 if (do_scsi_page83_inquiry(dev_scsi, fd, dev_scsi->serial, serial_short, len)) {
861 } else if (page_code == PAGE_83_PRE_SPC3) {
862 retval = do_scsi_page83_prespc3_inquiry(dev_scsi, fd, dev_scsi->serial, serial_short, len);
865 * Fallback to servicing a SPC-2/3 compliant page 83
866 * inquiry if the page 83 reply format does not
867 * conform to pre-SPC3 expectations.
870 if (do_scsi_page83_inquiry(dev_scsi, fd, dev_scsi->serial, serial_short, len)) {
886 } else if (page_code != 0x00) {
887 info("%s: unsupported page code 0x%d\n", dev_scsi->kernel, page_code);
892 * Get page 0, the page of the pages. By default, try from best to
893 * worst of supported pages: 0x83 then 0x80.
895 if (do_scsi_page0_inquiry(dev_scsi, fd, page0, SCSI_INQ_BUFF_LEN)) {
897 * Don't try anything else. Black list if a specific page
898 * should be used for this vendor+model, or maybe have an
899 * optional fall-back to page 0x80 or page 0x83.
905 dbg("%s: Checking page0\n", dev_scsi->kernel);
907 for (ind = 4; ind <= page0[3] + 3; ind++)
908 if (page0[ind] == PAGE_83)
909 if (!do_scsi_page83_inquiry(dev_scsi, fd,
910 dev_scsi->serial, serial_short, len)) {
918 for (ind = 4; ind <= page0[3] + 3; ind++)
919 if (page0[ind] == PAGE_80)
920 if (!do_scsi_page80_inquiry(dev_scsi, fd,
921 dev_scsi->serial, serial_short, len)) {