2d4f06f66b
Set dev->fd to -1 when calling cam_close_spec_device with a valid dev->fd descriptor to avoid trashing valid file descriptors that access dev->fd at a later point in time PR: 192671 Submitted by: Scott Ferris <scott.ferris@isilon.com> Sponsored by: EMC / Isilon Storage Division
755 lines
20 KiB
C
755 lines
20 KiB
C
/*
|
|
* Copyright (c) 1997, 1998, 1999, 2002 Kenneth D. Merry.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
|
|
#include <cam/cam.h>
|
|
#include <cam/scsi/scsi_all.h>
|
|
#include <cam/cam_ccb.h>
|
|
#include <cam/scsi/scsi_pass.h>
|
|
#include "camlib.h"
|
|
|
|
|
|
static const char *nonrewind_devs[] = {
|
|
"sa"
|
|
};
|
|
|
|
char cam_errbuf[CAM_ERRBUF_SIZE];
|
|
|
|
static struct cam_device *cam_real_open_device(const char *path, int flags,
|
|
struct cam_device *device,
|
|
const char *given_path,
|
|
const char *given_dev_name,
|
|
int given_unit_number);
|
|
static struct cam_device *cam_lookup_pass(const char *dev_name, int unit,
|
|
int flags, const char *given_path,
|
|
struct cam_device *device);
|
|
|
|
/*
|
|
* Send a ccb to a passthrough device.
|
|
*/
|
|
int
|
|
cam_send_ccb(struct cam_device *device, union ccb *ccb)
|
|
{
|
|
return(ioctl(device->fd, CAMIOCOMMAND, ccb));
|
|
}
|
|
|
|
/*
|
|
* Malloc a CCB, zero out the header and set its path, target and lun ids.
|
|
*/
|
|
union ccb *
|
|
cam_getccb(struct cam_device *dev)
|
|
{
|
|
union ccb *ccb;
|
|
|
|
ccb = (union ccb *)malloc(sizeof(union ccb));
|
|
if (ccb != NULL) {
|
|
bzero(&ccb->ccb_h, sizeof(struct ccb_hdr));
|
|
ccb->ccb_h.path_id = dev->path_id;
|
|
ccb->ccb_h.target_id = dev->target_id;
|
|
ccb->ccb_h.target_lun = dev->target_lun;
|
|
}
|
|
|
|
return(ccb);
|
|
}
|
|
|
|
/*
|
|
* Free a CCB.
|
|
*/
|
|
void
|
|
cam_freeccb(union ccb *ccb)
|
|
{
|
|
free(ccb);
|
|
}
|
|
|
|
/*
|
|
* Take a device name or path passed in by the user, and attempt to figure
|
|
* out the device name and unit number. Some possible device name formats are:
|
|
* /dev/foo0
|
|
* foo0
|
|
* nfoo0
|
|
*
|
|
* Some peripheral drivers create separate device nodes with 'n' prefix for
|
|
* non-rewind operations. Currently only sa(4) tape driver has this feature.
|
|
* We extract pure peripheral name as device name for this special case.
|
|
*
|
|
* Input parameters: device name/path, length of devname string
|
|
* Output: device name, unit number
|
|
* Return values: returns 0 for success, -1 for failure
|
|
*/
|
|
int
|
|
cam_get_device(const char *path, char *dev_name, int devnamelen, int *unit)
|
|
{
|
|
char *func_name = "cam_get_device";
|
|
char *tmpstr, *tmpstr2;
|
|
char *newpath;
|
|
int unit_offset;
|
|
int i;
|
|
|
|
|
|
if (path == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: device pathname was NULL", func_name);
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* We can be rather destructive to the path string. Make a copy of
|
|
* it so we don't hose the user's string.
|
|
*/
|
|
newpath = (char *)strdup(path);
|
|
tmpstr = newpath;
|
|
|
|
/*
|
|
* Check to see whether we have an absolute pathname.
|
|
*/
|
|
if (*tmpstr == '/') {
|
|
tmpstr2 = tmpstr;
|
|
tmpstr = strrchr(tmpstr2, '/');
|
|
if ((tmpstr != NULL) && (*tmpstr != '\0'))
|
|
tmpstr++;
|
|
}
|
|
|
|
if (*tmpstr == '\0') {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: no text after slash", func_name);
|
|
free(newpath);
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* Check to see whether the user has given us a nonrewound tape
|
|
* device.
|
|
*/
|
|
if (*tmpstr == 'n' || *tmpstr == 'e') {
|
|
for (i = 0; i < sizeof(nonrewind_devs)/sizeof(char *); i++) {
|
|
int len = strlen(nonrewind_devs[i]);
|
|
if (strncmp(tmpstr + 1, nonrewind_devs[i], len) == 0) {
|
|
if (isdigit(tmpstr[len + 1])) {
|
|
tmpstr++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We should now have just a device name and unit number.
|
|
* That means that there must be at least 2 characters.
|
|
* If we only have 1, we don't have a valid device name.
|
|
*/
|
|
if (strlen(tmpstr) < 2) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: must have both device name and unit number",
|
|
func_name);
|
|
free(newpath);
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* If the first character of the string is a digit, then the user
|
|
* has probably given us all numbers. Point out the error.
|
|
*/
|
|
if (isdigit(*tmpstr)) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: device name cannot begin with a number",
|
|
func_name);
|
|
free(newpath);
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* At this point, if the last character of the string isn't a
|
|
* number, we know the user either didn't give us a device number,
|
|
* or he gave us a device name/number format we don't recognize.
|
|
*/
|
|
if (!isdigit(tmpstr[strlen(tmpstr) - 1])) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: unable to find device unit number", func_name);
|
|
free(newpath);
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* Attempt to figure out where the device name ends and the unit
|
|
* number begins. As long as unit_offset is at least 1 less than
|
|
* the length of the string, we can still potentially have a device
|
|
* name at the front of the string. When we get to something that
|
|
* isn't a digit, we've hit the device name. Because of the check
|
|
* above, we know that this cannot happen when unit_offset == 1.
|
|
* Therefore it is okay to decrement unit_offset -- it won't cause
|
|
* us to go past the end of the character array.
|
|
*/
|
|
for (unit_offset = 1;
|
|
(unit_offset < (strlen(tmpstr)))
|
|
&& (isdigit(tmpstr[strlen(tmpstr) - unit_offset])); unit_offset++);
|
|
|
|
unit_offset--;
|
|
|
|
/*
|
|
* Grab the unit number.
|
|
*/
|
|
*unit = atoi(&tmpstr[strlen(tmpstr) - unit_offset]);
|
|
|
|
/*
|
|
* Put a null in place of the first number of the unit number so
|
|
* that all we have left is the device name.
|
|
*/
|
|
tmpstr[strlen(tmpstr) - unit_offset] = '\0';
|
|
|
|
strlcpy(dev_name, tmpstr, devnamelen);
|
|
|
|
/* Clean up allocated memory */
|
|
free(newpath);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
/*
|
|
* Backwards compatible wrapper for the real open routine. This translates
|
|
* a pathname into a device name and unit number for use with the real open
|
|
* routine.
|
|
*/
|
|
struct cam_device *
|
|
cam_open_device(const char *path, int flags)
|
|
{
|
|
int unit;
|
|
char dev_name[DEV_IDLEN + 1];
|
|
|
|
/*
|
|
* cam_get_device() has already put an error message in cam_errbuf,
|
|
* so we don't need to.
|
|
*/
|
|
if (cam_get_device(path, dev_name, sizeof(dev_name), &unit) == -1)
|
|
return(NULL);
|
|
|
|
return(cam_lookup_pass(dev_name, unit, flags, path, NULL));
|
|
}
|
|
|
|
/*
|
|
* Open the passthrough device for a given bus, target and lun, if the
|
|
* passthrough device exists.
|
|
*/
|
|
struct cam_device *
|
|
cam_open_btl(path_id_t path_id, target_id_t target_id, lun_id_t target_lun,
|
|
int flags, struct cam_device *device)
|
|
{
|
|
union ccb ccb;
|
|
struct periph_match_pattern *match_pat;
|
|
char *func_name = "cam_open_btl";
|
|
int fd, bufsize;
|
|
|
|
if ((fd = open(XPT_DEVICE, O_RDWR)) < 0) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't open %s\n%s: %s", func_name, XPT_DEVICE,
|
|
func_name, strerror(errno));
|
|
return(NULL);
|
|
}
|
|
|
|
bzero(&ccb, sizeof(union ccb));
|
|
ccb.ccb_h.func_code = XPT_DEV_MATCH;
|
|
ccb.ccb_h.path_id = CAM_XPT_PATH_ID;
|
|
ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
|
|
ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
|
|
|
|
/* Setup the result buffer */
|
|
bufsize = sizeof(struct dev_match_result);
|
|
ccb.cdm.match_buf_len = bufsize;
|
|
ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize);
|
|
if (ccb.cdm.matches == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't malloc match buffer", func_name);
|
|
close(fd);
|
|
return(NULL);
|
|
}
|
|
ccb.cdm.num_matches = 0;
|
|
|
|
/* Setup the pattern buffer */
|
|
ccb.cdm.num_patterns = 1;
|
|
ccb.cdm.pattern_buf_len = sizeof(struct dev_match_pattern);
|
|
ccb.cdm.patterns = (struct dev_match_pattern *)malloc(
|
|
sizeof(struct dev_match_pattern));
|
|
if (ccb.cdm.patterns == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't malloc pattern buffer", func_name);
|
|
free(ccb.cdm.matches);
|
|
close(fd);
|
|
return(NULL);
|
|
}
|
|
ccb.cdm.patterns[0].type = DEV_MATCH_PERIPH;
|
|
match_pat = &ccb.cdm.patterns[0].pattern.periph_pattern;
|
|
|
|
/*
|
|
* We're looking for the passthrough device associated with this
|
|
* particular bus/target/lun.
|
|
*/
|
|
sprintf(match_pat->periph_name, "pass");
|
|
match_pat->path_id = path_id;
|
|
match_pat->target_id = target_id;
|
|
match_pat->target_lun = target_lun;
|
|
/* Now set the flags to indicate what we're looking for. */
|
|
match_pat->flags = PERIPH_MATCH_PATH | PERIPH_MATCH_TARGET |
|
|
PERIPH_MATCH_LUN | PERIPH_MATCH_NAME;
|
|
|
|
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: CAMIOCOMMAND ioctl failed\n"
|
|
"%s: %s", func_name, func_name, strerror(errno));
|
|
goto btl_bailout;
|
|
}
|
|
|
|
/*
|
|
* Check for an outright error.
|
|
*/
|
|
if ((ccb.ccb_h.status != CAM_REQ_CMP)
|
|
|| ((ccb.cdm.status != CAM_DEV_MATCH_LAST)
|
|
&& (ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: CAM error %#x, CDM error %d "
|
|
"returned from XPT_DEV_MATCH ccb", func_name,
|
|
ccb.ccb_h.status, ccb.cdm.status);
|
|
goto btl_bailout;
|
|
}
|
|
|
|
if (ccb.cdm.status == CAM_DEV_MATCH_MORE) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: CDM reported more than one"
|
|
" passthrough device at %d:%d:%jx!!\n",
|
|
func_name, path_id, target_id, (uintmax_t)target_lun);
|
|
goto btl_bailout;
|
|
}
|
|
|
|
if (ccb.cdm.num_matches == 0) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: no passthrough device found at"
|
|
" %d:%d:%jx", func_name, path_id, target_id,
|
|
(uintmax_t)target_lun);
|
|
goto btl_bailout;
|
|
}
|
|
|
|
switch(ccb.cdm.matches[0].type) {
|
|
case DEV_MATCH_PERIPH: {
|
|
int pass_unit;
|
|
char dev_path[256];
|
|
struct periph_match_result *periph_result;
|
|
|
|
periph_result = &ccb.cdm.matches[0].result.periph_result;
|
|
pass_unit = periph_result->unit_number;
|
|
free(ccb.cdm.matches);
|
|
free(ccb.cdm.patterns);
|
|
close(fd);
|
|
sprintf(dev_path, "/dev/pass%d", pass_unit);
|
|
return(cam_real_open_device(dev_path, flags, device, NULL,
|
|
NULL, 0));
|
|
break; /* NOTREACHED */
|
|
}
|
|
default:
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: asked for a peripheral match, but"
|
|
" got a bus or device match", func_name);
|
|
goto btl_bailout;
|
|
break; /* NOTREACHED */
|
|
}
|
|
|
|
btl_bailout:
|
|
free(ccb.cdm.matches);
|
|
free(ccb.cdm.patterns);
|
|
close(fd);
|
|
return(NULL);
|
|
}
|
|
|
|
struct cam_device *
|
|
cam_open_spec_device(const char *dev_name, int unit, int flags,
|
|
struct cam_device *device)
|
|
{
|
|
return(cam_lookup_pass(dev_name, unit, flags, NULL, device));
|
|
}
|
|
|
|
struct cam_device *
|
|
cam_open_pass(const char *path, int flags, struct cam_device *device)
|
|
{
|
|
return(cam_real_open_device(path, flags, device, path, NULL, 0));
|
|
}
|
|
|
|
static struct cam_device *
|
|
cam_lookup_pass(const char *dev_name, int unit, int flags,
|
|
const char *given_path, struct cam_device *device)
|
|
{
|
|
int fd;
|
|
union ccb ccb;
|
|
char dev_path[256];
|
|
char *func_name = "cam_lookup_pass";
|
|
|
|
/*
|
|
* The flags argument above only applies to the actual passthrough
|
|
* device open, not our open of the given device to find the
|
|
* passthrough device.
|
|
*/
|
|
if ((fd = open(XPT_DEVICE, O_RDWR)) < 0) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't open %s\n%s: %s", func_name, XPT_DEVICE,
|
|
func_name, strerror(errno));
|
|
return(NULL);
|
|
}
|
|
|
|
/* This isn't strictly necessary for the GETPASSTHRU ioctl. */
|
|
ccb.ccb_h.func_code = XPT_GDEVLIST;
|
|
|
|
/* These two are necessary for the GETPASSTHRU ioctl to work. */
|
|
strlcpy(ccb.cgdl.periph_name, dev_name, sizeof(ccb.cgdl.periph_name));
|
|
ccb.cgdl.unit_number = unit;
|
|
|
|
/*
|
|
* Attempt to get the passthrough device. This ioctl will fail if
|
|
* the device name is null, if the device doesn't exist, or if the
|
|
* passthrough driver isn't in the kernel.
|
|
*/
|
|
if (ioctl(fd, CAMGETPASSTHRU, &ccb) == -1) {
|
|
char tmpstr[256];
|
|
|
|
/*
|
|
* If we get ENOENT from the transport layer version of
|
|
* the CAMGETPASSTHRU ioctl, it means one of two things:
|
|
* either the device name/unit number passed in doesn't
|
|
* exist, or the passthrough driver isn't in the kernel.
|
|
*/
|
|
if (errno == ENOENT) {
|
|
snprintf(tmpstr, sizeof(tmpstr),
|
|
"\n%s: either the pass driver isn't in "
|
|
"your kernel\n%s: or %s%d doesn't exist",
|
|
func_name, func_name, dev_name, unit);
|
|
}
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: CAMGETPASSTHRU ioctl failed\n"
|
|
"%s: %s%s", func_name, func_name, strerror(errno),
|
|
(errno == ENOENT) ? tmpstr : "");
|
|
|
|
close(fd);
|
|
return(NULL);
|
|
}
|
|
|
|
close(fd);
|
|
|
|
/*
|
|
* If the ioctl returned the right status, but we got an error back
|
|
* in the ccb, that means that the kernel found the device the user
|
|
* passed in, but was unable to find the passthrough device for
|
|
* the device the user gave us.
|
|
*/
|
|
if (ccb.cgdl.status == CAM_GDEVLIST_ERROR) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: device %s%d does not exist!",
|
|
func_name, dev_name, unit);
|
|
return(NULL);
|
|
}
|
|
|
|
sprintf(dev_path, "/dev/%s%d", ccb.cgdl.periph_name,
|
|
ccb.cgdl.unit_number);
|
|
|
|
return(cam_real_open_device(dev_path, flags, device, NULL,
|
|
dev_name, unit));
|
|
}
|
|
|
|
/*
|
|
* Open a given device. The path argument isn't strictly necessary, but it
|
|
* is copied into the cam_device structure as a convenience to the user.
|
|
*/
|
|
static struct cam_device *
|
|
cam_real_open_device(const char *path, int flags, struct cam_device *device,
|
|
const char *given_path, const char *given_dev_name,
|
|
int given_unit_number)
|
|
{
|
|
char *func_name = "cam_real_open_device";
|
|
union ccb ccb;
|
|
int fd = -1, malloced_device = 0;
|
|
|
|
/*
|
|
* See if the user wants us to malloc a device for him.
|
|
*/
|
|
if (device == NULL) {
|
|
if ((device = (struct cam_device *)malloc(
|
|
sizeof(struct cam_device))) == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: device structure malloc"
|
|
" failed\n%s: %s", func_name, func_name,
|
|
strerror(errno));
|
|
return(NULL);
|
|
}
|
|
device->fd = -1;
|
|
malloced_device = 1;
|
|
}
|
|
|
|
/*
|
|
* If the user passed in a path, save it for him.
|
|
*/
|
|
if (given_path != NULL)
|
|
strlcpy(device->device_path, given_path,
|
|
sizeof(device->device_path));
|
|
else
|
|
device->device_path[0] = '\0';
|
|
|
|
/*
|
|
* If the user passed in a device name and unit number pair, save
|
|
* those as well.
|
|
*/
|
|
if (given_dev_name != NULL)
|
|
strlcpy(device->given_dev_name, given_dev_name,
|
|
sizeof(device->given_dev_name));
|
|
else
|
|
device->given_dev_name[0] = '\0';
|
|
device->given_unit_number = given_unit_number;
|
|
|
|
if ((fd = open(path, flags)) < 0) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't open passthrough device %s\n"
|
|
"%s: %s", func_name, path, func_name,
|
|
strerror(errno));
|
|
goto crod_bailout;
|
|
}
|
|
|
|
device->fd = fd;
|
|
|
|
bzero(&ccb, sizeof(union ccb));
|
|
|
|
/*
|
|
* Unlike the transport layer version of the GETPASSTHRU ioctl,
|
|
* we don't have to set any fields.
|
|
*/
|
|
ccb.ccb_h.func_code = XPT_GDEVLIST;
|
|
|
|
/*
|
|
* We're only doing this to get some information on the device in
|
|
* question. Otherwise, we'd have to pass in yet another
|
|
* parameter: the passthrough driver unit number.
|
|
*/
|
|
if (ioctl(fd, CAMGETPASSTHRU, &ccb) == -1) {
|
|
/*
|
|
* At this point we know the passthrough device must exist
|
|
* because we just opened it above. The only way this
|
|
* ioctl can fail is if the ccb size is wrong.
|
|
*/
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: CAMGETPASSTHRU ioctl failed\n"
|
|
"%s: %s", func_name, func_name, strerror(errno));
|
|
goto crod_bailout;
|
|
}
|
|
|
|
/*
|
|
* If the ioctl returned the right status, but we got an error back
|
|
* in the ccb, that means that the kernel found the device the user
|
|
* passed in, but was unable to find the passthrough device for
|
|
* the device the user gave us.
|
|
*/
|
|
if (ccb.cgdl.status == CAM_GDEVLIST_ERROR) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: passthrough device does not exist!", func_name);
|
|
goto crod_bailout;
|
|
}
|
|
|
|
device->dev_unit_num = ccb.cgdl.unit_number;
|
|
strlcpy(device->device_name, ccb.cgdl.periph_name,
|
|
sizeof(device->device_name));
|
|
device->path_id = ccb.ccb_h.path_id;
|
|
device->target_id = ccb.ccb_h.target_id;
|
|
device->target_lun = ccb.ccb_h.target_lun;
|
|
|
|
ccb.ccb_h.func_code = XPT_PATH_INQ;
|
|
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: Path Inquiry CCB failed\n"
|
|
"%s: %s", func_name, func_name, strerror(errno));
|
|
goto crod_bailout;
|
|
}
|
|
strlcpy(device->sim_name, ccb.cpi.dev_name, sizeof(device->sim_name));
|
|
device->sim_unit_number = ccb.cpi.unit_number;
|
|
device->bus_id = ccb.cpi.bus_id;
|
|
|
|
/*
|
|
* It doesn't really matter what is in the payload for a getdev
|
|
* CCB, the kernel doesn't look at it.
|
|
*/
|
|
ccb.ccb_h.func_code = XPT_GDEV_TYPE;
|
|
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: Get Device Type CCB failed\n"
|
|
"%s: %s", func_name, func_name, strerror(errno));
|
|
goto crod_bailout;
|
|
}
|
|
device->pd_type = SID_TYPE(&ccb.cgd.inq_data);
|
|
bcopy(&ccb.cgd.inq_data, &device->inq_data,
|
|
sizeof(struct scsi_inquiry_data));
|
|
device->serial_num_len = ccb.cgd.serial_num_len;
|
|
bcopy(&ccb.cgd.serial_num, &device->serial_num, device->serial_num_len);
|
|
|
|
/*
|
|
* Zero the payload, the kernel does look at the flags.
|
|
*/
|
|
bzero(&(&ccb.ccb_h)[1], sizeof(struct ccb_trans_settings));
|
|
|
|
/*
|
|
* Get transfer settings for this device.
|
|
*/
|
|
ccb.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
|
|
|
|
ccb.cts.type = CTS_TYPE_CURRENT_SETTINGS;
|
|
|
|
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: Get Transfer Settings CCB failed\n"
|
|
"%s: %s", func_name, func_name, strerror(errno));
|
|
goto crod_bailout;
|
|
}
|
|
if (ccb.cts.transport == XPORT_SPI) {
|
|
struct ccb_trans_settings_spi *spi =
|
|
&ccb.cts.xport_specific.spi;
|
|
device->sync_period = spi->sync_period;
|
|
device->sync_offset = spi->sync_offset;
|
|
device->bus_width = spi->bus_width;
|
|
} else {
|
|
device->sync_period = 0;
|
|
device->sync_offset = 0;
|
|
device->bus_width = 0;
|
|
}
|
|
|
|
return(device);
|
|
|
|
crod_bailout:
|
|
|
|
if (fd >= 0)
|
|
close(fd);
|
|
|
|
if (malloced_device)
|
|
free(device);
|
|
|
|
return(NULL);
|
|
}
|
|
|
|
void
|
|
cam_close_device(struct cam_device *dev)
|
|
{
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
cam_close_spec_device(dev);
|
|
|
|
free(dev);
|
|
}
|
|
|
|
void
|
|
cam_close_spec_device(struct cam_device *dev)
|
|
{
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
if (dev->fd >= 0) {
|
|
close(dev->fd);
|
|
dev->fd = -1;
|
|
}
|
|
}
|
|
|
|
char *
|
|
cam_path_string(struct cam_device *dev, char *str, int len)
|
|
{
|
|
if (dev == NULL) {
|
|
snprintf(str, len, "No path");
|
|
return(str);
|
|
}
|
|
|
|
snprintf(str, len, "(%s%d:%s%d:%d:%d:%jx): ",
|
|
(dev->device_name[0] != '\0') ? dev->device_name : "pass",
|
|
dev->dev_unit_num,
|
|
(dev->sim_name[0] != '\0') ? dev->sim_name : "unknown",
|
|
dev->sim_unit_number,
|
|
dev->bus_id,
|
|
dev->target_id,
|
|
(uintmax_t)dev->target_lun);
|
|
|
|
return(str);
|
|
}
|
|
|
|
/*
|
|
* Malloc/duplicate a CAM device structure.
|
|
*/
|
|
struct cam_device *
|
|
cam_device_dup(struct cam_device *device)
|
|
{
|
|
char *func_name = "cam_device_dup";
|
|
struct cam_device *newdev;
|
|
|
|
if (device == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: device is NULL", func_name);
|
|
return(NULL);
|
|
}
|
|
|
|
newdev = malloc(sizeof(struct cam_device));
|
|
if (newdev == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: couldn't malloc CAM device structure", func_name);
|
|
return(NULL);
|
|
}
|
|
|
|
bcopy(device, newdev, sizeof(struct cam_device));
|
|
|
|
return(newdev);
|
|
}
|
|
|
|
/*
|
|
* Copy a CAM device structure.
|
|
*/
|
|
void
|
|
cam_device_copy(struct cam_device *src, struct cam_device *dst)
|
|
{
|
|
char *func_name = "cam_device_copy";
|
|
|
|
if (src == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: source device struct was NULL", func_name);
|
|
return;
|
|
}
|
|
|
|
if (dst == NULL) {
|
|
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
|
|
"%s: destination device struct was NULL", func_name);
|
|
return;
|
|
}
|
|
|
|
bcopy(src, dst, sizeof(struct cam_device));
|
|
|
|
}
|