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.h"
36 #include "scsi_id_version.h"
39 * A priority based list of id, naa, and binary/ascii for the identifier
40 * descriptor in VPD page 0x83.
42 * Brute force search for a match starting with the first value in the
43 * following id_search_list. This is not a performance issue, since there
44 * is normally one or some small number of descriptors.
46 static const struct scsi_id_search_values id_search_list[] = {
47 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_BINARY },
48 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_ASCII },
49 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_BINARY },
50 { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_ASCII },
52 * Devices already exist using NAA values that are now marked
53 * reserved. These should not conflict with other values, or it is
54 * a bug in the device. As long as we find the IEEE extended one
55 * first, we really don't care what other ones are used. Using
56 * don't care here means that a device that returns multiple
57 * non-IEEE descriptors in a random order will get different
60 { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
61 { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
62 { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
63 { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
64 { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
65 { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
66 { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
67 { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII },
70 static const char hex_str[]="0123456789abcdef";
73 * Values returned in the result/status, only the ones used by the code
77 #define DID_NO_CONNECT 0x01 /* Unable to connect before timeout */
78 #define DID_BUS_BUSY 0x02 /* Bus remain busy until timeout */
79 #define DID_TIME_OUT 0x03 /* Timed out for some other reason */
80 #define DRIVER_TIMEOUT 0x06
81 #define DRIVER_SENSE 0x08 /* Sense_buffer has been set */
83 /* The following "category" function returns one of the following */
84 #define SG_ERR_CAT_CLEAN 0 /* No errors or other information */
85 #define SG_ERR_CAT_MEDIA_CHANGED 1 /* interpreted from sense buffer */
86 #define SG_ERR_CAT_RESET 2 /* interpreted from sense buffer */
87 #define SG_ERR_CAT_TIMEOUT 3
88 #define SG_ERR_CAT_RECOVERED 4 /* Successful command after recovered err */
89 #define SG_ERR_CAT_NOTSUPPORTED 5 /* Illegal / unsupported command */
90 #define SG_ERR_CAT_SENSE 98 /* Something else in the sense buffer */
91 #define SG_ERR_CAT_OTHER 99 /* Some other error/warning */
93 static int sg_err_category_new(int scsi_status, int msg_status, int
94 host_status, int driver_status, const
95 unsigned char *sense_buffer, int sb_len)
100 * XXX change to return only two values - failed or OK.
103 if (!scsi_status && !host_status && !driver_status)
104 return SG_ERR_CAT_CLEAN;
106 if ((scsi_status == SCSI_CHECK_CONDITION) ||
107 (scsi_status == SCSI_COMMAND_TERMINATED) ||
108 ((driver_status & 0xf) == DRIVER_SENSE)) {
109 if (sense_buffer && (sb_len > 2)) {
113 if (sense_buffer[0] & 0x2) {
114 sense_key = sense_buffer[1] & 0xf;
115 asc = sense_buffer[2];
117 sense_key = sense_buffer[2] & 0xf;
118 asc = (sb_len > 12) ? sense_buffer[12] : 0;
121 if (sense_key == RECOVERED_ERROR)
122 return SG_ERR_CAT_RECOVERED;
123 else if (sense_key == UNIT_ATTENTION) {
125 return SG_ERR_CAT_MEDIA_CHANGED;
127 return SG_ERR_CAT_RESET;
128 } else if (sense_key == ILLEGAL_REQUEST) {
129 return SG_ERR_CAT_NOTSUPPORTED;
132 return SG_ERR_CAT_SENSE;
135 if ((host_status == DID_NO_CONNECT) ||
136 (host_status == DID_BUS_BUSY) ||
137 (host_status == DID_TIME_OUT))
138 return SG_ERR_CAT_TIMEOUT;
140 if (!driver_status) {
141 if (driver_status == DRIVER_TIMEOUT)
142 return SG_ERR_CAT_TIMEOUT;
144 return SG_ERR_CAT_OTHER;
147 static int sg_err_category3(struct sg_io_hdr *hp)
149 return sg_err_category_new(hp->status, hp->msg_status,
150 hp->host_status, hp->driver_status,
151 hp->sbp, hp->sb_len_wr);
154 static int sg_err_category4(struct sg_io_v4 *hp)
156 return sg_err_category_new(hp->device_status, 0,
157 hp->transport_status, hp->driver_status,
158 (unsigned char *)hp->response,
162 static int scsi_dump_sense(struct scsi_id_device *dev_scsi,
163 unsigned char *sense_buffer, int sb_len)
169 int descriptor_format;
172 char out_buffer[256];
177 * Figure out and print the sense key, asc and ascq.
179 * If you want to suppress these for a particular drive model, add
180 * a black list entry in the scsi_id config file.
182 * XXX We probably need to: lookup the sense/asc/ascq in a retry
183 * table, and if found return 1 (after dumping the sense, asc, and
184 * ascq). So, if/when we get something like a power on/reset,
185 * we'll retry the command.
188 dbg("got check condition\n");
191 info("%s: sense buffer empty\n", dev_scsi->kernel);
195 sense_class = (sense_buffer[0] >> 4) & 0x07;
196 code = sense_buffer[0] & 0xf;
198 if (sense_class == 7) {
200 * extended sense data.
202 s = sense_buffer[7] + 8;
204 info("%s: sense buffer too small %d bytes, %d bytes too short\n",
205 dev_scsi->kernel, sb_len, s - sb_len);
208 if ((code == 0x0) || (code == 0x1)) {
209 descriptor_format = 0;
210 sense_key = sense_buffer[2] & 0xf;
215 info("%s: sense result too" " small %d bytes\n",
216 dev_scsi->kernel, s);
219 asc = sense_buffer[12];
220 ascq = sense_buffer[13];
221 } else if ((code == 0x2) || (code == 0x3)) {
222 descriptor_format = 1;
223 sense_key = sense_buffer[1] & 0xf;
224 asc = sense_buffer[2];
225 ascq = sense_buffer[3];
227 info("%s: invalid sense code 0x%x\n",
228 dev_scsi->kernel, code);
231 info("%s: sense key 0x%x ASC 0x%x ASCQ 0x%x\n",
232 dev_scsi->kernel, sense_key, asc, ascq);
235 info("%s: sense buffer too small %d bytes, %d bytes too short\n",
236 dev_scsi->kernel, sb_len, 4 - sb_len);
240 if (sense_buffer[0] < 15)
241 info("%s: old sense key: 0x%x\n", dev_scsi->kernel, sense_buffer[0] & 0x0f);
243 info("%s: sense = %2x %2x\n",
244 dev_scsi->kernel, sense_buffer[0], sense_buffer[2]);
245 info("%s: non-extended sense class %d code 0x%0x\n",
246 dev_scsi->kernel, sense_class, code);
251 for (i = 0, j = 0; (i < s) && (j < 254); i++) {
252 dbg("i %d, j %d\n", i, j);
253 out_buffer[j++] = hex_str[(sense_buffer[i] & 0xf0) >> 4];
254 out_buffer[j++] = hex_str[sense_buffer[i] & 0x0f];
255 out_buffer[j++] = ' ';
257 out_buffer[j] = '\0';
258 info("%s: sense dump:\n", dev_scsi->kernel);
259 info("%s: %s\n", dev_scsi->kernel, out_buffer);
265 static int scsi_dump(struct scsi_id_device *dev_scsi, struct sg_io_hdr *io)
267 if (!io->status && !io->host_status && !io->msg_status &&
268 !io->driver_status) {
270 * Impossible, should not be called.
272 info("%s: called with no error\n", __FUNCTION__);
276 info("%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x\n",
277 dev_scsi->kernel, io->driver_status, io->host_status, io->msg_status, io->status);
278 if (io->status == SCSI_CHECK_CONDITION)
279 return scsi_dump_sense(dev_scsi, io->sbp, io->sb_len_wr);
284 static int scsi_dump_v4(struct scsi_id_device *dev_scsi, struct sg_io_v4 *io)
286 if (!io->device_status && !io->transport_status &&
287 !io->driver_status) {
289 * Impossible, should not be called.
291 info("%s: called with no error\n", __FUNCTION__);
295 info("%s: sg_io failed status 0x%x 0x%x 0x%x\n",
296 dev_scsi->kernel, io->driver_status, io->transport_status,
298 if (io->device_status == SCSI_CHECK_CONDITION)
299 return scsi_dump_sense(dev_scsi, (unsigned char *)io->response,
305 static int scsi_inquiry(struct scsi_id_device *dev_scsi, int fd,
306 unsigned char evpd, unsigned char page,
307 unsigned char *buf, unsigned int buflen)
309 unsigned char inq_cmd[INQUIRY_CMDLEN] =
310 { INQUIRY_CMD, evpd, page, 0, buflen, 0 };
311 unsigned char sense[SENSE_BUFF_LEN];
314 int retry = 3; /* rather random */
316 if (buflen > SCSI_INQ_BUFF_LEN) {
317 info("buflen %d too long\n", buflen);
322 dbg("%s evpd %d, page 0x%x\n", dev_scsi->kernel, evpd, page);
324 if (dev_scsi->use_sg == 4) {
325 struct sg_io_v4 io_v4;
327 memset(&io_v4, 0, sizeof(struct sg_io_v4));
329 io_v4.protocol = BSG_PROTOCOL_SCSI;
330 io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
331 io_v4.request_len = sizeof(inq_cmd);
332 io_v4.request = (uintptr_t)inq_cmd;
333 io_v4.max_response_len = sizeof(sense);
334 io_v4.response = (uintptr_t)sense;
335 io_v4.din_xfer_len = buflen;
336 io_v4.din_xferp = (uintptr_t)buf;
337 io_buf = (void *)&io_v4;
339 struct sg_io_hdr io_hdr;
341 memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
342 io_hdr.interface_id = 'S';
343 io_hdr.cmd_len = sizeof(inq_cmd);
344 io_hdr.mx_sb_len = sizeof(sense);
345 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
346 io_hdr.dxfer_len = buflen;
348 io_hdr.cmdp = inq_cmd;
350 io_hdr.timeout = DEF_TIMEOUT;
351 io_buf = (void *)&io_hdr;
354 if (ioctl(fd, SG_IO, io_buf) < 0) {
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));
364 if (dev_scsi->use_sg == 4)
365 retval = sg_err_category4(io_buf);
367 retval = sg_err_category3(io_buf);
370 case SG_ERR_CAT_NOTSUPPORTED:
373 case SG_ERR_CAT_CLEAN:
374 case SG_ERR_CAT_RECOVERED:
379 if (dev_scsi->use_sg == 4)
380 retval = scsi_dump_v4(dev_scsi, io_buf);
382 retval = scsi_dump(dev_scsi, io_buf);
387 } else if (retval > 0) {
389 dbg("%s: Retrying ...\n", dev_scsi->kernel);
397 info("%s: Unable to get INQUIRY vpd %d page 0x%x.\n",
398 dev_scsi->kernel, evpd, page);
403 /* Get list of supported EVPD pages */
404 static int do_scsi_page0_inquiry(struct scsi_id_device *dev_scsi, int fd,
405 unsigned char *buffer, unsigned int len)
409 memset(buffer, 0, len);
410 retval = scsi_inquiry(dev_scsi, fd, 1, 0x0, buffer, len);
414 if (buffer[1] != 0) {
415 info("%s: page 0 not available.\n", dev_scsi->kernel);
418 if (buffer[3] > len) {
419 info("%s: page 0 buffer too long %d\n", dev_scsi->kernel, buffer[3]);
424 * Following check is based on code once included in the 2.5.x
427 * Some ill behaved devices return the standard inquiry here
428 * rather than the evpd data, snoop the data to verify.
430 if (buffer[3] > MODEL_LENGTH) {
432 * If the vendor id appears in the page assume the page is
435 if (!strncmp((char *)&buffer[VENDOR_LENGTH], dev_scsi->vendor, VENDOR_LENGTH)) {
436 info("%s: invalid page0 data\n", dev_scsi->kernel);
444 * The caller checks that serial is long enough to include the vendor +
447 static int prepend_vendor_model(struct scsi_id_device *dev_scsi, char *serial)
451 strncpy(serial, dev_scsi->vendor, VENDOR_LENGTH);
452 ind = strlen(serial) - 1;
454 strncat(serial, dev_scsi->model, MODEL_LENGTH);
455 ind = strlen(serial) - 1;
459 * This is not a complete check, since we are using strncat/cpy
460 * above, ind will never be too large.
462 if (ind != (VENDOR_LENGTH + MODEL_LENGTH)) {
463 info("%s: expected length %d, got length %d\n",
464 dev_scsi->kernel, (VENDOR_LENGTH + MODEL_LENGTH), ind);
471 * check_fill_0x83_id - check the page 0x83 id, if OK allocate and fill
474 static int check_fill_0x83_id(struct scsi_id_device *dev_scsi,
475 unsigned char *page_83,
476 const struct scsi_id_search_values
477 *id_search, char *serial, char *serial_short, int max_len)
482 * ASSOCIATION must be with the device (value 0)
484 if ((page_83[1] & 0x30) != 0)
487 if ((page_83[1] & 0x0f) != id_search->id_type)
491 * Possibly check NAA sub-type.
493 if ((id_search->naa_type != SCSI_ID_NAA_DONT_CARE) &&
494 (id_search->naa_type != (page_83[4] & 0xf0) >> 4))
498 * Check for matching code set - ASCII or BINARY.
500 if ((page_83[0] & 0x0f) != id_search->code_set)
504 * page_83[3]: identifier length
507 if ((page_83[0] & 0x0f) != SCSI_ID_ASCII)
509 * If not ASCII, use two bytes for each binary value.
514 * Add one byte for the NUL termination, and one for the id_type.
517 if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
518 len += VENDOR_LENGTH + MODEL_LENGTH;
521 info("%s: length %d too short - need %d\n",
522 dev_scsi->kernel, max_len, len);
526 serial[0] = hex_str[id_search->id_type];
529 * For SCSI_ID_VENDOR_SPECIFIC prepend the vendor and model before
530 * the id since it is not unique across all vendors and models,
531 * this differs from SCSI_ID_T10_VENDOR, where the vendor is
532 * included in the identifier.
534 if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
535 if (prepend_vendor_model(dev_scsi, &serial[1]) < 0) {
536 dbg("prepend failed\n");
540 i = 4; /* offset to the start of the identifier */
541 s = j = strlen(serial);
542 if ((page_83[0] & 0x0f) == SCSI_ID_ASCII) {
546 while (i < (4 + page_83[3]))
547 serial[j++] = page_83[i++];
550 * Binary descriptor, convert to ASCII, using two bytes of
551 * ASCII for each byte in the page_83.
553 while (i < (4 + page_83[3])) {
554 serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
555 serial[j++] = hex_str[page_83[i] & 0x0f];
560 strcpy(serial_short, &serial[s]);
564 /* Extract the raw binary from VPD 0x83 pre-SPC devices */
565 static int check_fill_0x83_prespc3(struct scsi_id_device *dev_scsi,
566 unsigned char *page_83,
567 const struct scsi_id_search_values
568 *id_search, char *serial, char *serial_short, int max_len)
572 dbg("using pre-spc3-83 for %s\n", dev_scsi->kernel);
573 serial[0] = hex_str[id_search->id_type];
574 /* serial has been memset to zero before */
575 j = strlen(serial); /* j = 1; */
577 for (i = 0; i < page_83[3]; ++i) {
578 serial[j++] = hex_str[(page_83[4+i] & 0xf0) >> 4];
579 serial[j++] = hex_str[ page_83[4+i] & 0x0f];
581 strcpy(serial_short, serial);
586 /* Get device identification VPD page */
587 static int do_scsi_page83_inquiry(struct scsi_id_device *dev_scsi, int fd,
588 char *serial, char *serial_short, int len)
591 unsigned int id_ind, j;
592 unsigned char page_83[SCSI_INQ_BUFF_LEN];
594 memset(page_83, 0, SCSI_INQ_BUFF_LEN);
595 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_83, page_83,
600 if (page_83[1] != PAGE_83) {
601 info("%s: Invalid page 0x83\n", dev_scsi->kernel);
606 * XXX Some devices (IBM 3542) return all spaces for an identifier if
607 * the LUN is not actually configured. This leads to identifers of
612 * Model 4, 5, and (some) model 6 EMC Symmetrix devices return
613 * a page 83 reply according to SCSI-2 format instead of SPC-2/3.
615 * The SCSI-2 page 83 format returns an IEEE WWN in binary
616 * encoded hexi-decimal in the 16 bytes following the initial
617 * 4-byte page 83 reply header.
619 * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part
620 * of an Identification descriptor. The 3rd byte of the first
621 * Identification descriptor is a reserved (BSZ) byte field.
623 * Reference the 7th byte of the page 83 reply to determine
624 * whether the reply is compliant with SCSI-2 or SPC-2/3
625 * specifications. A zero value in the 7th byte indicates
626 * an SPC-2/3 conformant reply, (i.e., the reserved field of the
627 * first Identification descriptor). This byte will be non-zero
628 * for a SCSI-2 conformant page 83 reply from these EMC
629 * Symmetrix models since the 7th byte of the reply corresponds
630 * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is,
635 return check_fill_0x83_prespc3(dev_scsi, page_83, id_search_list,
636 serial, serial_short, len);
639 * Search for a match in the prioritized id_search_list.
642 id_ind < sizeof(id_search_list)/sizeof(id_search_list[0]);
645 * Examine each descriptor returned. There is normally only
646 * one or a small number of descriptors.
648 for (j = 4; j <= (unsigned int)page_83[3] + 3; j += page_83[j + 3] + 4) {
649 retval = check_fill_0x83_id(dev_scsi, &page_83[j],
650 &id_search_list[id_ind],
651 serial, serial_short, len);
652 dbg("%s id desc %d/%d/%d\n", dev_scsi->kernel,
653 id_search_list[id_ind].id_type,
654 id_search_list[id_ind].naa_type,
655 id_search_list[id_ind].code_set);
659 } else if (retval < 0) {
671 * Get device identification VPD page for older SCSI-2 device which is not
672 * compliant with either SPC-2 or SPC-3 format.
674 * Return the hard coded error code value 2 if the page 83 reply is not
675 * conformant to the SCSI-2 format.
677 static int do_scsi_page83_prespc3_inquiry(struct scsi_id_device *dev_scsi, int fd,
678 char *serial, char *serial_short, int len)
682 unsigned char page_83[SCSI_INQ_BUFF_LEN];
684 memset(page_83, 0, SCSI_INQ_BUFF_LEN);
685 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_83, page_83, SCSI_INQ_BUFF_LEN);
689 if (page_83[1] != PAGE_83) {
690 info("%s: Invalid page 0x83\n", dev_scsi->kernel);
694 * Model 4, 5, and (some) model 6 EMC Symmetrix devices return
695 * a page 83 reply according to SCSI-2 format instead of SPC-2/3.
697 * The SCSI-2 page 83 format returns an IEEE WWN in binary
698 * encoded hexi-decimal in the 16 bytes following the initial
699 * 4-byte page 83 reply header.
701 * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part
702 * of an Identification descriptor. The 3rd byte of the first
703 * Identification descriptor is a reserved (BSZ) byte field.
705 * Reference the 7th byte of the page 83 reply to determine
706 * whether the reply is compliant with SCSI-2 or SPC-2/3
707 * specifications. A zero value in the 7th byte indicates
708 * an SPC-2/3 conformant reply, (i.e., the reserved field of the
709 * first Identification descriptor). This byte will be non-zero
710 * for a SCSI-2 conformant page 83 reply from these EMC
711 * Symmetrix models since the 7th byte of the reply corresponds
712 * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is,
718 serial[0] = hex_str[id_search_list[0].id_type];
720 * The first four bytes contain data, not a descriptor.
725 * Binary descriptor, convert to ASCII,
726 * using two bytes of ASCII for each byte
729 while (i < (page_83[3]+4)) {
730 serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4];
731 serial[j++] = hex_str[page_83[i] & 0x0f];
734 dbg("using pre-spc3-83 for %s\n", dev_scsi->kernel);
738 /* Get unit serial number VPD page */
739 static int do_scsi_page80_inquiry(struct scsi_id_device *dev_scsi, int fd,
740 char *serial, char *serial_short, int max_len)
746 unsigned char buf[SCSI_INQ_BUFF_LEN];
748 memset(buf, 0, SCSI_INQ_BUFF_LEN);
749 retval = scsi_inquiry(dev_scsi, fd, 1, PAGE_80, buf, SCSI_INQ_BUFF_LEN);
753 if (buf[1] != PAGE_80) {
754 info("%s: Invalid page 0x80\n", dev_scsi->kernel);
758 len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3];
760 info("%s: length %d too short - need %d\n",
761 dev_scsi->kernel, max_len, len);
765 * Prepend 'S' to avoid unlikely collision with page 0x83 vendor
766 * specific type where we prepend '0' + vendor + model.
769 ser_ind = prepend_vendor_model(dev_scsi, &serial[1]);
773 for (i = 4; i < len + 4; i++, ser_ind++)
774 serial[ser_ind] = buf[i];
775 memcpy(serial_short, &buf[4], len);
776 serial_short[len] = '\0';
780 int scsi_std_inquiry(struct scsi_id_device *dev_scsi, const char *devname)
783 unsigned char buf[SCSI_INQ_BUFF_LEN];
787 dbg("opening %s\n", devname);
788 fd = open(devname, O_RDONLY | O_NONBLOCK);
790 info("scsi_id: cannot open %s: %s\n",
791 devname, strerror(errno));
795 if (fstat(fd, &statbuf) < 0) {
796 info("scsi_id: cannot stat %s: %s\n",
797 devname, strerror(errno));
801 sprintf(dev_scsi->kernel,"%d:%d", major(statbuf.st_rdev),
802 minor(statbuf.st_rdev));
804 memset(buf, 0, SCSI_INQ_BUFF_LEN);
805 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)) {