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Diffstat (limited to 'src/udev/scsi_id/scsi_serial.c')
-rw-r--r--src/udev/scsi_id/scsi_serial.c964
1 files changed, 0 insertions, 964 deletions
diff --git a/src/udev/scsi_id/scsi_serial.c b/src/udev/scsi_id/scsi_serial.c
deleted file mode 100644
index e079e28698..0000000000
--- a/src/udev/scsi_id/scsi_serial.c
+++ /dev/null
@@ -1,964 +0,0 @@
-/*
- * Copyright (C) IBM Corp. 2003
- *
- * Author: Patrick Mansfield<patmans@us.ibm.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <linux/bsg.h>
-#include <linux/types.h>
-#include <scsi/scsi.h>
-#include <scsi/sg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "libudev.h"
-
-#include "libudev-private.h"
-#include "random-util.h"
-#include "scsi.h"
-#include "scsi_id.h"
-#include "string-util.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_TGTGROUP, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY },
- { 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";
-
-/*
- * 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_NOTSUPPORTED 5 /* Illegal / unsupported command */
-#define SG_ERR_CAT_SENSE 98 /* Something else in the sense buffer */
-#define SG_ERR_CAT_OTHER 99 /* Some other error/warning */
-
-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);
-
-static int sg_err_category_new(struct udev *udev,
- 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.
- */
-
- if (!scsi_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;
- } else if (sense_key == ILLEGAL_REQUEST)
- return SG_ERR_CAT_NOTSUPPORTED;
- }
- 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 udev *udev, struct sg_io_hdr *hp)
-{
- return sg_err_category_new(udev,
- hp->status, hp->msg_status,
- hp->host_status, hp->driver_status,
- hp->sbp, hp->sb_len_wr);
-}
-
-static int sg_err_category4(struct udev *udev, struct sg_io_v4 *hp)
-{
- return sg_err_category_new(udev, hp->device_status, 0,
- hp->transport_status, hp->driver_status,
- (unsigned char *)(uintptr_t)hp->response,
- hp->response_len);
-}
-
-static int scsi_dump_sense(struct udev *udev,
- struct scsi_id_device *dev_scsi,
- unsigned char *sense_buffer, int sb_len)
-{
- int s;
- int code;
- int sense_class;
- int sense_key;
- 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.
- */
-
- if (sb_len < 1) {
- log_debug("%s: sense buffer empty", dev_scsi->kernel);
- return -1;
- }
-
- 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_debug("%s: sense buffer too small %d bytes, %d bytes too short",
- dev_scsi->kernel, sb_len, s - sb_len);
- return -1;
- }
- if ((code == 0x0) || (code == 0x1)) {
- sense_key = sense_buffer[2] & 0xf;
- if (s < 14) {
- /*
- * Possible?
- */
- log_debug("%s: sense result too" " small %d bytes",
- dev_scsi->kernel, s);
- return -1;
- }
- asc = sense_buffer[12];
- ascq = sense_buffer[13];
- } else if ((code == 0x2) || (code == 0x3)) {
- sense_key = sense_buffer[1] & 0xf;
- asc = sense_buffer[2];
- ascq = sense_buffer[3];
- } else {
- log_debug("%s: invalid sense code 0x%x",
- dev_scsi->kernel, code);
- return -1;
- }
- log_debug("%s: sense key 0x%x ASC 0x%x ASCQ 0x%x",
- dev_scsi->kernel, sense_key, asc, ascq);
- } else {
- if (sb_len < 4) {
- log_debug("%s: sense buffer too small %d bytes, %d bytes too short",
- dev_scsi->kernel, sb_len, 4 - sb_len);
- return -1;
- }
-
- if (sense_buffer[0] < 15)
- log_debug("%s: old sense key: 0x%x", dev_scsi->kernel, sense_buffer[0] & 0x0f);
- else
- log_debug("%s: sense = %2x %2x",
- dev_scsi->kernel, sense_buffer[0], sense_buffer[2]);
- log_debug("%s: non-extended sense class %d code 0x%0x",
- dev_scsi->kernel, sense_class, code);
-
- }
-
-#ifdef DUMP_SENSE
- for (i = 0, j = 0; (i < s) && (j < 254); i++) {
- 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_debug("%s: sense dump:", dev_scsi->kernel);
- log_debug("%s: %s", dev_scsi->kernel, out_buffer);
-
-#endif
- return -1;
-}
-
-static int scsi_dump(struct udev *udev,
- struct scsi_id_device *dev_scsi, struct sg_io_hdr *io)
-{
- if (!io->status && !io->host_status && !io->msg_status &&
- !io->driver_status) {
- /*
- * Impossible, should not be called.
- */
- log_debug("%s: called with no error", __FUNCTION__);
- return -1;
- }
-
- log_debug("%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x",
- dev_scsi->kernel, io->driver_status, io->host_status, io->msg_status, io->status);
- if (io->status == SCSI_CHECK_CONDITION)
- return scsi_dump_sense(udev, dev_scsi, io->sbp, io->sb_len_wr);
- else
- return -1;
-}
-
-static int scsi_dump_v4(struct udev *udev,
- struct scsi_id_device *dev_scsi, struct sg_io_v4 *io)
-{
- if (!io->device_status && !io->transport_status &&
- !io->driver_status) {
- /*
- * Impossible, should not be called.
- */
- log_debug("%s: called with no error", __FUNCTION__);
- return -1;
- }
-
- log_debug("%s: sg_io failed status 0x%x 0x%x 0x%x",
- dev_scsi->kernel, io->driver_status, io->transport_status, io->device_status);
- if (io->device_status == SCSI_CHECK_CONDITION)
- return scsi_dump_sense(udev, dev_scsi, (unsigned char *)(uintptr_t)io->response,
- io->response_len);
- else
- return -1;
-}
-
-static int scsi_inquiry(struct udev *udev,
- struct scsi_id_device *dev_scsi, 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];
- void *io_buf;
- struct sg_io_v4 io_v4;
- struct sg_io_hdr io_hdr;
- int retry = 3; /* rather random */
- int retval;
-
- if (buflen > SCSI_INQ_BUFF_LEN) {
- log_debug("buflen %d too long", buflen);
- return -1;
- }
-
-resend:
- if (dev_scsi->use_sg == 4) {
- memzero(&io_v4, sizeof(struct sg_io_v4));
- io_v4.guard = 'Q';
- io_v4.protocol = BSG_PROTOCOL_SCSI;
- io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
- io_v4.request_len = sizeof(inq_cmd);
- io_v4.request = (uintptr_t)inq_cmd;
- io_v4.max_response_len = sizeof(sense);
- io_v4.response = (uintptr_t)sense;
- io_v4.din_xfer_len = buflen;
- io_v4.din_xferp = (uintptr_t)buf;
- io_buf = (void *)&io_v4;
- } else {
- memzero(&io_hdr, 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 = buf;
- io_hdr.cmdp = inq_cmd;
- io_hdr.sbp = sense;
- io_hdr.timeout = DEF_TIMEOUT;
- io_buf = (void *)&io_hdr;
- }
-
- retval = ioctl(fd, SG_IO, io_buf);
- if (retval < 0) {
- if ((errno == EINVAL || errno == ENOSYS) && dev_scsi->use_sg == 4) {
- dev_scsi->use_sg = 3;
- goto resend;
- }
- log_debug_errno(errno, "%s: ioctl failed: %m", dev_scsi->kernel);
- goto error;
- }
-
- if (dev_scsi->use_sg == 4)
- retval = sg_err_category4(udev, io_buf);
- else
- retval = sg_err_category3(udev, io_buf);
-
- switch (retval) {
- case SG_ERR_CAT_NOTSUPPORTED:
- buf[1] = 0;
- /* Fallthrough */
- case SG_ERR_CAT_CLEAN:
- case SG_ERR_CAT_RECOVERED:
- retval = 0;
- break;
-
- default:
- if (dev_scsi->use_sg == 4)
- retval = scsi_dump_v4(udev, dev_scsi, io_buf);
- else
- retval = scsi_dump(udev, dev_scsi, io_buf);
- }
-
- if (!retval) {
- retval = buflen;
- } else if (retval > 0) {
- if (--retry > 0)
- goto resend;
- retval = -1;
- }
-
-error:
- if (retval < 0)
- log_debug("%s: Unable to get INQUIRY vpd %d page 0x%x.",
- dev_scsi->kernel, evpd, page);
-
- return retval;
-}
-
-/* Get list of supported EVPD pages */
-static int do_scsi_page0_inquiry(struct udev *udev,
- struct scsi_id_device *dev_scsi, int fd,
- unsigned char *buffer, unsigned int len)
-{
- int retval;
-
- memzero(buffer, len);
- retval = scsi_inquiry(udev, dev_scsi, fd, 1, 0x0, buffer, len);
- if (retval < 0)
- return 1;
-
- if (buffer[1] != 0) {
- log_debug("%s: page 0 not available.", dev_scsi->kernel);
- return 1;
- }
- if (buffer[3] > len) {
- log_debug("%s: page 0 buffer too long %d", dev_scsi->kernel, 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.
- */
- if (strneq((char *)&buffer[VENDOR_LENGTH], dev_scsi->vendor, VENDOR_LENGTH)) {
- log_debug("%s: invalid page0 data", dev_scsi->kernel);
- return 1;
- }
- }
- return 0;
-}
-
-/*
- * The caller checks that serial is long enough to include the vendor +
- * model.
- */
-static int prepend_vendor_model(struct udev *udev,
- struct scsi_id_device *dev_scsi, char *serial)
-{
- int ind;
-
- strncpy(serial, dev_scsi->vendor, VENDOR_LENGTH);
- strncat(serial, dev_scsi->model, MODEL_LENGTH);
- ind = strlen(serial);
-
- /*
- * 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_debug("%s: expected length %d, got length %d",
- dev_scsi->kernel, (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 udev *udev,
- struct scsi_id_device *dev_scsi,
- unsigned char *page_83,
- const struct scsi_id_search_values
- *id_search, char *serial, char *serial_short,
- int max_len, char *wwn,
- char *wwn_vendor_extension, char *tgpt_group)
-{
- int i, j, s, len;
-
- /*
- * ASSOCIATION must be with the device (value 0)
- * or with the target port for SCSI_ID_TGTPORT
- */
- if ((page_83[1] & 0x30) == 0x10) {
- if (id_search->id_type != SCSI_ID_TGTGROUP)
- return 1;
- } else 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_debug("%s: length %d too short - need %d",
- dev_scsi->kernel, max_len, len);
- return 1;
- }
-
- if (id_search->id_type == SCSI_ID_TGTGROUP && tgpt_group != NULL) {
- unsigned int group;
-
- group = ((unsigned int)page_83[6] << 8) | page_83[7];
- sprintf(tgpt_group,"%x", group);
- return 1;
- }
-
- serial[0] = hex_str[id_search->id_type];
-
- /*
- * For SCSI_ID_VENDOR_SPECIFIC prepend the vendor and model before
- * the id since it is not unique across all vendors and models,
- * this differs from SCSI_ID_T10_VENDOR, where the vendor is
- * included in the identifier.
- */
- if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
- if (prepend_vendor_model(udev, dev_scsi, &serial[1]) < 0)
- return 1;
-
- i = 4; /* offset to the start of the identifier */
- s = 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++;
- }
- }
-
- strcpy(serial_short, &serial[s]);
-
- if (id_search->id_type == SCSI_ID_NAA && wwn != NULL) {
- strncpy(wwn, &serial[s], 16);
- if (wwn_vendor_extension != NULL)
- strncpy(wwn_vendor_extension, &serial[s + 16], 16);
- }
-
- return 0;
-}
-
-/* Extract the raw binary from VPD 0x83 pre-SPC devices */
-static int check_fill_0x83_prespc3(struct udev *udev,
- struct scsi_id_device *dev_scsi,
- unsigned char *page_83,
- const struct scsi_id_search_values
- *id_search, char *serial, char *serial_short, int max_len)
-{
- int i, j;
-
- serial[0] = hex_str[id_search->id_type];
- /* serial has been memset to zero before */
- j = strlen(serial); /* j = 1; */
-
- for (i = 0; (i < page_83[3]) && (j < max_len-3); ++i) {
- serial[j++] = hex_str[(page_83[4+i] & 0xf0) >> 4];
- serial[j++] = hex_str[ page_83[4+i] & 0x0f];
- }
- serial[max_len-1] = 0;
- strncpy(serial_short, serial, max_len-1);
- return 0;
-}
-
-
-/* Get device identification VPD page */
-static int do_scsi_page83_inquiry(struct udev *udev,
- struct scsi_id_device *dev_scsi, int fd,
- char *serial, char *serial_short, int len,
- char *unit_serial_number, char *wwn,
- char *wwn_vendor_extension, char *tgpt_group)
-{
- int retval;
- unsigned int id_ind, j;
- unsigned char page_83[SCSI_INQ_BUFF_LEN];
-
- /* also pick up the page 80 serial number */
- do_scsi_page80_inquiry(udev, dev_scsi, fd, NULL, unit_serial_number, MAX_SERIAL_LEN);
-
- memzero(page_83, 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) {
- log_debug("%s: Invalid page 0x83", dev_scsi->kernel);
- return 1;
- }
-
- /*
- * XXX Some devices (IBM 3542) return all spaces for an identifier if
- * the LUN is not actually configured. This leads to identifiers of
- * the form: "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 check_fill_0x83_prespc3(udev,
- dev_scsi, page_83, id_search_list,
- serial, serial_short, len);
-
- /*
- * Search for a match in the prioritized id_search_list - since WWN ids
- * come first we can pick up the WWN in check_fill_0x83_id().
- */
- 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 <= (unsigned int)page_83[3] + 3; j += page_83[j + 3] + 4) {
- retval = check_fill_0x83_id(udev,
- dev_scsi, &page_83[j],
- &id_search_list[id_ind],
- serial, serial_short, len,
- wwn, wwn_vendor_extension,
- tgpt_group);
- if (!retval)
- return retval;
- else if (retval < 0)
- return retval;
- }
- }
- return 1;
-}
-
-/*
- * 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];
-
- memzero(page_83, 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) {
- log_debug("%s: Invalid page 0x83", 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++;
- }
- 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)
-{
- int retval;
- int ser_ind;
- int i;
- int len;
- unsigned char buf[SCSI_INQ_BUFF_LEN];
-
- memzero(buf, SCSI_INQ_BUFF_LEN);
- retval = scsi_inquiry(udev, dev_scsi, fd, 1, PAGE_80, buf, SCSI_INQ_BUFF_LEN);
- if (retval < 0)
- return retval;
-
- if (buf[1] != PAGE_80) {
- log_debug("%s: Invalid page 0x80", dev_scsi->kernel);
- return 1;
- }
-
- len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3];
- if (max_len < len) {
- log_debug("%s: length %d too short - need %d",
- dev_scsi->kernel, max_len, len);
- return 1;
- }
- /*
- * Prepend 'S' to avoid unlikely collision with page 0x83 vendor
- * specific type where we prepend '0' + vendor + model.
- */
- len = buf[3];
- if (serial != NULL) {
- serial[0] = 'S';
- ser_ind = prepend_vendor_model(udev, dev_scsi, &serial[1]);
- if (ser_ind < 0)
- return 1;
- ser_ind++; /* for the leading 'S' */
- for (i = 4; i < len + 4; i++, ser_ind++)
- serial[ser_ind] = buf[i];
- }
- if (serial_short != NULL) {
- memcpy(serial_short, &buf[4], len);
- serial_short[len] = '\0';
- }
- return 0;
-}
-
-int scsi_std_inquiry(struct udev *udev,
- struct scsi_id_device *dev_scsi, const char *devname)
-{
- int fd;
- unsigned char buf[SCSI_INQ_BUFF_LEN];
- struct stat statbuf;
- int err = 0;
-
- fd = open(devname, O_RDONLY | O_NONBLOCK | O_CLOEXEC);
- if (fd < 0) {
- log_debug_errno(errno, "scsi_id: cannot open %s: %m", devname);
- return 1;
- }
-
- if (fstat(fd, &statbuf) < 0) {
- log_debug_errno(errno, "scsi_id: cannot stat %s: %m", devname);
- err = 2;
- goto out;
- }
- sprintf(dev_scsi->kernel,"%d:%d", major(statbuf.st_rdev),
- minor(statbuf.st_rdev));
-
- memzero(buf, SCSI_INQ_BUFF_LEN);
- err = scsi_inquiry(udev, dev_scsi, fd, 0, 0, buf, SCSI_INQ_BUFF_LEN);
- if (err < 0)
- goto out;
-
- err = 0;
- memcpy(dev_scsi->vendor, buf + 8, 8);
- dev_scsi->vendor[8] = '\0';
- memcpy(dev_scsi->model, buf + 16, 16);
- dev_scsi->model[16] = '\0';
- memcpy(dev_scsi->revision, buf + 32, 4);
- dev_scsi->revision[4] = '\0';
- sprintf(dev_scsi->type,"%x", buf[0] & 0x1f);
-
-out:
- close(fd);
- return err;
-}
-
-int scsi_get_serial(struct udev *udev,
- struct scsi_id_device *dev_scsi, const char *devname,
- int page_code, int len)
-{
- unsigned char page0[SCSI_INQ_BUFF_LEN];
- int fd = -1;
- int cnt;
- int ind;
- int retval;
-
- memzero(dev_scsi->serial, len);
- initialize_srand();
- for (cnt = 20; cnt > 0; cnt--) {
- struct timespec duration;
-
- fd = open(devname, O_RDONLY | O_NONBLOCK | O_CLOEXEC);
- if (fd >= 0 || errno != EBUSY)
- break;
- duration.tv_sec = 0;
- duration.tv_nsec = (200 * 1000 * 1000) + (rand() % 100 * 1000 * 1000);
- nanosleep(&duration, NULL);
- }
- if (fd < 0)
- return 1;
-
- if (page_code == PAGE_80) {
- if (do_scsi_page80_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len)) {
- retval = 1;
- goto completed;
- } else {
- retval = 0;
- goto completed;
- }
- } else if (page_code == PAGE_83) {
- if (do_scsi_page83_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len, dev_scsi->unit_serial_number, dev_scsi->wwn, dev_scsi->wwn_vendor_extension, dev_scsi->tgpt_group)) {
- retval = 1;
- goto completed;
- } else {
- retval = 0;
- goto completed;
- }
- } else if (page_code == PAGE_83_PRE_SPC3) {
- retval = do_scsi_page83_prespc3_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len);
- if (retval) {
- /*
- * Fallback to servicing a SPC-2/3 compliant page 83
- * inquiry if the page 83 reply format does not
- * conform to pre-SPC3 expectations.
- */
- if (retval == 2) {
- if (do_scsi_page83_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len, dev_scsi->unit_serial_number, dev_scsi->wwn, dev_scsi->wwn_vendor_extension, dev_scsi->tgpt_group)) {
- retval = 1;
- goto completed;
- } else {
- retval = 0;
- goto completed;
- }
- }
- else {
- retval = 1;
- goto completed;
- }
- } else {
- retval = 0;
- goto completed;
- }
- } else if (page_code != 0x00) {
- log_debug("%s: unsupported page code 0x%d", dev_scsi->kernel, page_code);
- retval = 1;
- goto completed;
- }
-
- /*
- * 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(udev, dev_scsi, fd, page0, SCSI_INQ_BUFF_LEN)) {
- /*
- * 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;
- }
-
- for (ind = 4; ind <= page0[3] + 3; ind++)
- if (page0[ind] == PAGE_83)
- if (!do_scsi_page83_inquiry(udev, dev_scsi, fd,
- dev_scsi->serial, dev_scsi->serial_short, len, dev_scsi->unit_serial_number, dev_scsi->wwn, dev_scsi->wwn_vendor_extension, dev_scsi->tgpt_group)) {
- /*
- * Success
- */
- retval = 0;
- goto completed;
- }
-
- for (ind = 4; ind <= page0[3] + 3; ind++)
- if (page0[ind] == PAGE_80)
- if (!do_scsi_page80_inquiry(udev, dev_scsi, fd,
- dev_scsi->serial, dev_scsi->serial_short, len)) {
- /*
- * Success
- */
- retval = 0;
- goto completed;
- }
- retval = 1;
-
-completed:
- close(fd);
- return retval;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 12:10:14 +0000