-/*
+/* -*- 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
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
+#include <time.h>
#include <inttypes.h>
#include <scsi/scsi.h>
#include <scsi/sg.h>
#include <linux/types.h>
-/* #include <linux/bsg.h> */
-#include "bsg.h"
+#include <linux/bsg.h>
-#include "../../udev/udev.h"
+#include "libudev.h"
+#include "libudev-private.h"
#include "scsi.h"
#include "scsi_id.h"
#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_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
int code;
int sense_class;
int sense_key;
- int descriptor_format;
int asc, ascq;
#ifdef DUMP_SENSE
char out_buffer[256];
return -1;
}
if ((code == 0x0) || (code == 0x1)) {
- descriptor_format = 0;
sense_key = sense_buffer[2] & 0xf;
if (s < 14) {
/*
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];
return 1;
}
if (buffer[3] > len) {
- info(udev, "%s: page 0 buffer too long %d\n", dev_scsi->kernel, buffer[3]);
+ info(udev, "%s: page 0 buffer too long %d\n", dev_scsi->kernel, buffer[3]);
return 1;
}
int ind;
strncpy(serial, dev_scsi->vendor, VENDOR_LENGTH);
- ind = strlen(serial) - 1;
-
strncat(serial, dev_scsi->model, MODEL_LENGTH);
- ind = strlen(serial) - 1;
- ind++;
+ ind = strlen(serial);
/*
* This is not a complete check, since we are using strncat/cpy
if (ind != (VENDOR_LENGTH + MODEL_LENGTH)) {
info(udev, "%s: expected length %d, got length %d\n",
dev_scsi->kernel, (VENDOR_LENGTH + MODEL_LENGTH), ind);
- return 1;
+ return -1;
}
return ind;
}
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)
+ *id_search, char *serial, char *serial_short, int max_len,
+ char *wwn,
+ char *wwn_vendor_extension)
{
int i, j, s, len;
}
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;
}
/* serial has been memset to zero before */
j = strlen(serial); /* j = 1; */
- for (i = 0; i < page_83[3]; ++i) {
+ 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];
}
- strcpy(serial_short, serial);
+ 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 *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(udev, dev_scsi, fd, 1, PAGE_83, page_83,
SCSI_INQ_BUFF_LEN);
/*
* 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 ".
*/
serial, serial_short, len);
/*
- * Search for a match in the prioritized id_search_list.
+ * 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]);
retval = check_fill_0x83_id(udev,
dev_scsi, &page_83[j],
&id_search_list[id_ind],
- serial, serial_short, len);
+ 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,
len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3];
if (max_len < len) {
info(udev, "%s: length %d too short - need %d\n",
- dev_scsi->kernel, max_len, len);
+ 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(udev, dev_scsi, &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];
- memcpy(serial_short, &buf[4], len);
- serial_short[len] = '\0';
+ 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 udev *udev,
struct scsi_id_device *dev_scsi, const char *devname,
- int page_code, char *serial_short, int len)
+ int page_code, int len)
{
unsigned char page0[SCSI_INQ_BUFF_LEN];
int fd = -1;
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;
- usleep(500000 + (rand() % 100000) );
+ 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, serial_short, len)) {
+ if (do_scsi_page80_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len)) {
retval = 1;
goto completed;
} else {
goto completed;
}
} else if (page_code == PAGE_83) {
- if (do_scsi_page83_inquiry(udev, dev_scsi, fd, dev_scsi->serial, serial_short, len)) {
+ 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 {
goto completed;
}
} else if (page_code == PAGE_83_PRE_SPC3) {
- retval = do_scsi_page83_prespc3_inquiry(udev, dev_scsi, fd, dev_scsi->serial, serial_short, len);
+ 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
* conform to pre-SPC3 expectations.
*/
if (retval == 2) {
- if (do_scsi_page83_inquiry(udev, dev_scsi, fd, dev_scsi->serial, serial_short, len)) {
+ 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 {
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, serial_short, len)) {
+ 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] == PAGE_80)
if (!do_scsi_page80_inquiry(udev, dev_scsi, fd,
- dev_scsi->serial, serial_short, len)) {
+ dev_scsi->serial, dev_scsi->serial_short, len)) {
/*
* Success
*/
~ianmdlvl / elogind.git / blobdiff