-/*
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
* 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.
+ * Author:
+ * Patrick Mansfield<patmans@us.ibm.com>
*
- * 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
+ * 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 version 2 of the License.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
+#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
-#include <linux/compiler.h> /* need __user when built via klibc */
+#include <time.h>
+#include <inttypes.h>
+#include <scsi/scsi.h>
#include <scsi/sg.h>
-#include <sysfs/libsysfs.h>
-#include "scsi_id.h"
+#include <linux/types.h>
+#include <linux/bsg.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
#include "scsi.h"
+#include "scsi_id.h"
/*
* A priority based list of id, naa, and binary/ascii for the identifier
* 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 */
+#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
+#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)
{
* XXX change to return only two values - failed or OK.
*/
- /*
- * checks msg_status
- */
- if (!scsi_status && !msg_status && !host_status && !driver_status)
+ if (!scsi_status && !host_status && !driver_status)
return SG_ERR_CAT_CLEAN;
if ((scsi_status == SCSI_CHECK_CONDITION) ||
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;
return SG_ERR_CAT_OTHER;
}
-static int sg_err_category3(struct sg_io_hdr *hp)
+static int sg_err_category3(struct udev *udev, struct sg_io_hdr *hp)
{
- return sg_err_category_new(hp->status, hp->msg_status,
+ 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 scsi_dump_sense(struct sysfs_device *scsi_dev, struct sg_io_hdr *io)
+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)
{
- 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];
* we'll retry the command.
*/
- dprintf("got check condition\n");
+ dbg(udev, "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);
+ info(udev, "%s: sense buffer empty\n", dev_scsi->kernel);
return -1;
}
- sense_buffer = io->sbp;
sense_class = (sense_buffer[0] >> 4) & 0x07;
code = sense_buffer[0] & 0xf;
*/
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);
+ info(udev, "%s: sense buffer too small %d bytes, %d bytes too short\n",
+ dev_scsi->kernel, 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);
+ info(udev, "%s: sense result too" " small %d bytes\n",
+ dev_scsi->kernel, 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);
+ info(udev, "%s: invalid sense code 0x%x\n",
+ dev_scsi->kernel, 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);
+ info(udev, "%s: sense key 0x%x ASC 0x%x ASCQ 0x%x\n",
+ dev_scsi->kernel, 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);
+ info(udev, "%s: sense buffer too small %d bytes, %d bytes too short\n",
+ dev_scsi->kernel, 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);
+ info(udev, "%s: old sense key: 0x%x\n", dev_scsi->kernel, 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\n",
- scsi_dev->name, sense_class, code);
+ info(udev, "%s: sense = %2x %2x\n",
+ dev_scsi->kernel, sense_buffer[0], sense_buffer[2]);
+ info(udev, "%s: non-extended sense class %d code 0x%0x\n",
+ dev_scsi->kernel, sense_class, code);
}
#ifdef DUMP_SENSE
for (i = 0, j = 0; (i < s) && (j < 254); i++) {
- dprintf("i %d, j %d\n", i, j);
+ dbg(udev, "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);
+ info(udev, "%s: sense dump:\n", dev_scsi->kernel);
+ info(udev, "%s: %s\n", dev_scsi->kernel, out_buffer);
#endif
return -1;
}
-static int scsi_dump(struct sysfs_device *scsi_dev, struct sg_io_hdr *io)
+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_message(LOG_WARNING, "%s: called with no error\n",
- __FUNCTION__);
+ info(udev, "%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);
+ info(udev, "%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x\n",
+ dev_scsi->kernel, io->driver_status, io->host_status, io->msg_status, io->status);
if (io->status == SCSI_CHECK_CONDITION)
- return scsi_dump_sense(scsi_dev, io);
+ 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.
+ */
+ info(udev, "%s: called with no error\n", __FUNCTION__);
+ return -1;
+ }
+
+ info(udev, "%s: sg_io failed status 0x%x 0x%x 0x%x\n",
+ 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 sysfs_device *scsi_dev, int fd, unsigned
- char evpd, unsigned char page, unsigned char *buf,
- unsigned int buflen)
+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];
- struct sg_io_hdr io_hdr;
+ void *io_buf;
int retval;
int retry = 3; /* rather random */
if (buflen > SCSI_INQ_BUFF_LEN) {
- log_message(LOG_WARNING, "buflen %d too long\n", buflen);
+ info(udev, "buflen %d too long\n", buflen);
return -1;
}
resend:
- dprintf("%s evpd %d, page 0x%x\n", scsi_dev->name, evpd, page);
-
- 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 = buf;
- 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));
- retval = -1;
+ dbg(udev, "%s evpd %d, page 0x%x\n", dev_scsi->kernel, evpd, page);
+
+ if (dev_scsi->use_sg == 4) {
+ struct sg_io_v4 io_v4;
+
+ memset(&io_v4, 0, 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 {
+ struct sg_io_hdr io_hdr;
+
+ 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 = 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;
+ }
+ info(udev, "%s: ioctl failed: %s\n", dev_scsi->kernel, strerror(errno));
goto error;
}
- retval = sg_err_category3(&io_hdr);
+ 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:
- retval = scsi_dump(scsi_dev, &io_hdr);
+ 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) {
- dprintf("%s: Retrying ...\n", scsi_dev->name);
+ dbg(udev, "%s: Retrying ...\n", dev_scsi->kernel);
goto resend;
}
retval = -1;
error:
if (retval < 0)
- log_message(LOG_WARNING,
- "%s: Unable to get INQUIRY vpd %d page 0x%x.\n",
- scsi_dev->name, evpd, page);
+ info(udev, "%s: Unable to get INQUIRY vpd %d page 0x%x.\n",
+ dev_scsi->kernel, evpd, page);
return retval;
}
/* Get list of supported EVPD pages */
-static int do_scsi_page0_inquiry(struct sysfs_device *scsi_dev, int fd,
- char *buffer, int len)
+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;
- struct sysfs_attribute *vendor;
memset(buffer, 0, len);
- retval = scsi_inquiry(scsi_dev, fd, 1, 0x0, buffer, len);
+ retval = scsi_inquiry(udev, dev_scsi, 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);
+ info(udev, "%s: page 0 not available.\n", dev_scsi->kernel);
return 1;
}
if (buffer[3] > len) {
- log_message(LOG_WARNING, "%s: page 0 buffer too long %d\n",
- scsi_dev->name, buffer[3]);
+ info(udev, "%s: page 0 buffer too long %d\n", dev_scsi->kernel, buffer[3]);
return 1;
}
* If the vendor id appears in the page assume the page is
* invalid.
*/
- vendor = sysfs_get_device_attr(scsi_dev, "vendor");
- if (!vendor) {
- log_message(LOG_WARNING,
- "%s: cannot get model attribute\n",
- scsi_dev->name);
- return 1;
- }
- if (!strncmp(&buffer[VENDOR_LENGTH], vendor->value,
- VENDOR_LENGTH)) {
- log_message(LOG_WARNING, "%s: invalid page0 data\n",
- scsi_dev->name);
+ if (!strncmp((char *)&buffer[VENDOR_LENGTH], dev_scsi->vendor, VENDOR_LENGTH)) {
+ info(udev, "%s: invalid page0 data\n", dev_scsi->kernel);
return 1;
}
}
* The caller checks that serial is long enough to include the vendor +
* model.
*/
-static int prepend_vendor_model(struct sysfs_device *scsi_dev, char *serial)
+static int prepend_vendor_model(struct udev *udev,
+ struct scsi_id_device *dev_scsi, char *serial)
{
- struct sysfs_attribute *attr;
int ind;
- attr = sysfs_get_device_attr(scsi_dev, "vendor");
- if (!attr) {
- log_message(LOG_WARNING, "%s: cannot get vendor attribute\n",
- scsi_dev->name);
- return 1;
- }
- strncpy(serial, attr->value, VENDOR_LENGTH);
- ind = strlen(serial) - 1;
- /*
- * Remove sysfs added newlines.
- */
- if (serial[ind] == '\n')
- serial[ind] = '\0';
-
- attr = sysfs_get_device_attr(scsi_dev, "model");
- if (!attr) {
- log_message(LOG_WARNING, "%s: cannot get model attribute\n",
- scsi_dev->name);
- return 1;
- }
- strncat(serial, attr->value, MODEL_LENGTH);
- ind = strlen(serial) - 1;
- if (serial[ind] == '\n')
- serial[ind] = '\0';
- else
- 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_message(LOG_WARNING, "%s: expected length %d, got length %d\n",
- scsi_dev->name, (VENDOR_LENGTH + MODEL_LENGTH),
- ind);
- return 1;
+ info(udev, "%s: expected length %d, got length %d\n",
+ 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 sysfs_device *scsi_dev, char
- *page_83, const struct scsi_id_search_values
- *id_search, char *serial, int max_len)
+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)
{
- int i, j, len;
+ int i, j, s, len;
/*
* ASSOCIATION must be with the device (value 0)
*/
len *= 2;
- /*
+ /*
* Add one byte for the NUL termination, and one for the id_type.
*/
len += 2;
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);
+ info(udev, "%s: length %d too short - need %d\n",
+ dev_scsi->kernel, max_len, len);
return 1;
}
* included in the identifier.
*/
if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC)
- if (prepend_vendor_model(scsi_dev, &serial[1]) < 0) {
- dprintf("prepend failed\n");
+ if (prepend_vendor_model(udev, dev_scsi, &serial[1]) < 0) {
+ dbg(udev, "prepend failed\n");
return 1;
}
i = 4; /* offset to the start of the identifier */
- j = strlen(serial);
+ s = j = strlen(serial);
if ((page_83[0] & 0x0f) == SCSI_ID_ASCII) {
/*
* ASCII descriptor.
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;
+
+ dbg(udev, "using pre-spc3-83 for %s\n", dev_scsi->kernel);
+ 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 sysfs_device *scsi_dev, int fd,
- char *serial, int len)
+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)
{
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);
+
memset(page_83, 0, SCSI_INQ_BUFF_LEN);
- retval = scsi_inquiry(scsi_dev, fd, 1, 0x83, page_83,
+ 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] != 0x83) {
- log_message(LOG_WARNING, "%s: Invalid page 0x83\n",
- scsi_dev->name);
+ if (page_83[1] != PAGE_83) {
+ info(udev, "%s: Invalid page 0x83\n", 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 identifers of
+ * the LUN is not actually configured. This leads to identifiers of
* the form: "1 ".
*/
/*
- * Search for a match in the prioritized id_search_list.
+ * 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]);
* 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(scsi_dev, &page_83[j],
+ retval = check_fill_0x83_id(udev,
+ dev_scsi, &page_83[j],
&id_search_list[id_ind],
- serial, len);
- dprintf("%s id desc %d/%d/%d\n", scsi_dev->name,
+ serial, serial_short, len,
+ wwn,
+ wwn_vendor_extension);
+ dbg(udev, "%s id desc %d/%d/%d\n", dev_scsi->kernel,
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");
+ dbg(udev, " used\n");
return retval;
} else if (retval < 0) {
- dprintf(" failed\n");
+ dbg(udev, " failed\n");
return retval;
} else {
- dprintf(" not used\n");
+ dbg(udev, " not used\n");
}
}
}
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];
+
+ memset(page_83, 0, 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) {
+ info(udev, "%s: Invalid page 0x83\n", 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++;
+ }
+ dbg(udev, "using pre-spc3-83 for %s\n", dev_scsi->kernel);
+ return 0;
+}
+
/* Get unit serial number VPD page */
-static int do_scsi_page80_inquiry(struct sysfs_device *scsi_dev, int fd,
- char *serial, int max_len)
+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;
unsigned char buf[SCSI_INQ_BUFF_LEN];
memset(buf, 0, SCSI_INQ_BUFF_LEN);
- retval = scsi_inquiry(scsi_dev, fd, 1, 0x80, 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] != 0x80) {
- log_message(LOG_WARNING, "%s: Invalid page 0x80\n",
- scsi_dev->name);
+ if (buf[1] != PAGE_80) {
+ info(udev, "%s: Invalid page 0x80\n", dev_scsi->kernel);
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);
+ info(udev, "%s: length %d too short - need %d\n",
+ 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.
*/
- 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];
+ 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;
+ 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_get_serial (struct sysfs_device *scsi_dev, const char *devname,
- int page_code, char *serial, int len)
+int scsi_std_inquiry(struct udev *udev,
+ struct scsi_id_device *dev_scsi, const char *devname)
{
- unsigned char page0[SCSI_INQ_BUFF_LEN];
int fd;
- int ind;
- int retval;
+ unsigned char buf[SCSI_INQ_BUFF_LEN];
+ struct stat statbuf;
+ int err = 0;
- memset(serial, 0, len);
- dprintf("opening %s\n", devname);
+ dbg(udev, "opening %s\n", devname);
fd = open(devname, O_RDONLY | O_NONBLOCK);
if (fd < 0) {
- log_message(LOG_WARNING, "%s: cannot open %s: %s\n",
- scsi_dev->name, devname, strerror(errno));
+ info(udev, "scsi_id: cannot open %s: %s\n",
+ devname, strerror(errno));
return 1;
}
- if (page_code == 0x80) {
- if (do_scsi_page80_inquiry(scsi_dev, fd, serial, len)) {
+ if (fstat(fd, &statbuf) < 0) {
+ info(udev, "scsi_id: cannot stat %s: %s\n",
+ devname, strerror(errno));
+ err = 2;
+ goto out;
+ }
+ sprintf(dev_scsi->kernel,"%d:%d", major(statbuf.st_rdev),
+ minor(statbuf.st_rdev));
+
+ memset(buf, 0, 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 = 10;
+ int ind;
+ int retval;
+
+ memset(dev_scsi->serial, 0, len);
+ dbg(udev, "opening %s\n", devname);
+ while (--cnt) {
+ const struct timespec duration = { 0, 500 * 1000 * 1000 };
+
+ fd = open(devname, O_RDONLY | O_NONBLOCK);
+ if (fd >= 0)
+ break;
+ info(udev, "%s: cannot open %s: %s\n", dev_scsi->kernel, devname, strerror(errno));
+ if (errno != EBUSY)
+ break;
+ 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 == 0x83) {
- if (do_scsi_page83_inquiry(scsi_dev, fd, serial, len)) {
+ } 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)) {
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)) {
+ 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_message(LOG_WARNING, "%s: unsupported page code 0x%d\n",
- scsi_dev->name, page_code);
+ info(udev, "%s: unsupported page code 0x%d\n", dev_scsi->kernel, 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, SCSI_INQ_BUFF_LEN)) {
+ 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
goto completed;
}
- dprintf("%s: Checking page0\n", scsi_dev->name);
+ dbg(udev, "%s: Checking page0\n", dev_scsi->kernel);
for (ind = 4; ind <= page0[3] + 3; ind++)
- if (page0[ind] == 0x83)
- if (!do_scsi_page83_inquiry(scsi_dev, fd, serial,
- len)) {
+ 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)) {
/*
* Success
*/
}
for (ind = 4; ind <= page0[3] + 3; ind++)
- if (page0[ind] == 0x80)
- if (!do_scsi_page80_inquiry(scsi_dev, fd, serial,
- len)) {
+ if (page0[ind] == PAGE_80)
+ if (!do_scsi_page80_inquiry(udev, dev_scsi, fd,
+ dev_scsi->serial, dev_scsi->serial_short, len)) {
/*
* Success
*/
goto completed;
}
retval = 1;
+
completed:
- if (close(fd) < 0)
- log_message(LOG_WARNING, "%s: close failed: %s\n",
- scsi_dev->name, strerror(errno));
+ close(fd);
return retval;
}
~ianmdlvl / elogind.git / blobdiff