Super User's BSD Cross Reference: /FreeBSD/lib/libcam/camlib.c

 /*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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 <assert.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 *tmpstr, *tmpstr2;
 char *newpath;
 int unit_offset;
 int i;

 if (path == NULL) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: device pathname was NULL", __func__);
 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);
 if (newpath == NULL)
 return (-1);

 tmpstr = newpath;

 /*
 * Check to see whether we have an absolute pathname.
 */
 if (*tmpstr == '/') {
 tmpstr2 = tmpstr;
 tmpstr = strrchr(tmpstr2, '/');
 /* We know that tmpstr2 contains a '/', so strrchr can't fail */
 assert(tmpstr != NULL && *tmpstr != '0円');
 tmpstr++;
 }

 if (*tmpstr == '0円') {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: no text after slash", __func__);
 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, nitems(cam_errbuf),
 "%s: must have both device name and unit number",
 __func__);
 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, nitems(cam_errbuf),
 "%s: device name cannot begin with a number",
 __func__);
 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, nitems(cam_errbuf),
 "%s: unable to find device unit number", __func__);
 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円';

 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;
 int fd, bufsize;

 if ((fd = open(XPT_DEVICE, O_RDWR)) < 0) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: couldn't open %s\n%s: %s", __func__, XPT_DEVICE,
 __func__, 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, nitems(cam_errbuf),
 "%s: couldn't malloc match buffer", __func__);
 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, nitems(cam_errbuf),
 "%s: couldn't malloc pattern buffer", __func__);
 free(ccb.cdm.matches);
 ccb.cdm.matches = NULL;
 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, nitems(cam_errbuf),
 "%s: CAMIOCOMMAND ioctl failed\n"
 "%s: %s", __func__, __func__, 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, nitems(cam_errbuf),
 "%s: CAM error %#x, CDM error %d "
 "returned from XPT_DEV_MATCH ccb", __func__,
 ccb.ccb_h.status, ccb.cdm.status);
 goto btl_bailout;
 }

 if (ccb.cdm.status == CAM_DEV_MATCH_MORE) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: CDM reported more than one"
 " passthrough device at %d:%d:%jx!!\n",
 __func__, path_id, target_id, (uintmax_t)target_lun);
 goto btl_bailout;
 }

 if (ccb.cdm.num_matches == 0) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: no passthrough device found at"
 " %d:%d:%jx", __func__, 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);
 ccb.cdm.matches = NULL;
 free(ccb.cdm.patterns);
 ccb.cdm.patterns = NULL;
 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, nitems(cam_errbuf),
 "%s: asked for a peripheral match, but"
 " got a bus or device match", __func__);
 goto btl_bailout;
 break; /* NOTREACHED */
 }

 btl_bailout:
 free(ccb.cdm.matches);
 ccb.cdm.matches = NULL;
 free(ccb.cdm.patterns);
 ccb.cdm.patterns = NULL;
 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];

 /*
 * 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, nitems(cam_errbuf),
 "%s: couldn't open %s\n%s: %s", __func__, XPT_DEVICE,
 __func__, 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__, __func__, dev_name, unit);
 }
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: CAMGETPASSTHRU ioctl failed\n"
 "%s: %s%s", __func__, __func__, 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, nitems(cam_errbuf),
 "%s: device %s%d does not exist!",
 __func__, 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)
{
 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, nitems(cam_errbuf),
 "%s: device structure malloc"
 " failed\n%s: %s", __func__, __func__,
 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円';

 /*
 * 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円';
 device->given_unit_number = given_unit_number;

 if ((fd = open(path, flags)) < 0) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: couldn't open passthrough device %s\n"
 "%s: %s", __func__, path, __func__,
 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, nitems(cam_errbuf),
 "%s: CAMGETPASSTHRU ioctl failed\n"
 "%s: %s", __func__, __func__, 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, nitems(cam_errbuf),
 "%s: passthrough device does not exist!", __func__);
 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, nitems(cam_errbuf),
 "%s: Path Inquiry CCB failed\n"
 "%s: %s", __func__, __func__, 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, nitems(cam_errbuf),
 "%s: Get Device Type CCB failed\n"
 "%s: %s", __func__, __func__, 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.
 */
 CCB_CLEAR_ALL_EXCEPT_HDR(&ccb.cts);

 /*
 * 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, nitems(cam_errbuf),
 "%s: Get Transfer Settings CCB failed\n"
 "%s: %s", __func__, __func__, 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円') ? dev->device_name : "pass",
 dev->dev_unit_num,
 (dev->sim_name[0] != '0円') ? 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)
{
 struct cam_device *newdev;

 if (device == NULL) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: device is NULL", __func__);
 return (NULL);
 }

 newdev = malloc(sizeof(struct cam_device));
 if (newdev == NULL) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: couldn't malloc CAM device structure", __func__);
 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)
{

 if (src == NULL) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: source device struct was NULL", __func__);
 return;
 }

 if (dst == NULL) {
 snprintf(cam_errbuf, nitems(cam_errbuf),
 "%s: destination device struct was NULL", __func__);
 return;
 }

 bcopy(src, dst, sizeof(struct cam_device));

}
 

Indexes created Mon Nov 10 03:54:35 PST 2025