cam_compat.c

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    1 /*-
    2  * CAM ioctl compatibility shims
    3  *
    4  * Copyright (c) 2013 Scott Long
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions, and the following disclaimer,
   12  *    without modification, immediately at the beginning of the file.
   13  * 2. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/types.h>
   36 #include <sys/kernel.h>
   37 #include <sys/conf.h>
   38 #include <sys/fcntl.h>
   39 
   40 #include <sys/lock.h>
   41 #include <sys/mutex.h>
   42 #include <sys/sysctl.h>
   43 #include <sys/kthread.h>
   44 
   45 #include <cam/cam.h>
   46 #include <cam/cam_ccb.h>
   47 #include <cam/cam_compat.h>
   48 
   49 #include <cam/scsi/scsi_pass.h>
   50 
   51 #include "opt_cam.h"
   52 
   53 int
   54 cam_compat_ioctl(struct cdev *dev, u_long *cmd, caddr_t *addr, int *flag, struct thread *td)
   55 {
   56         int error;
   57 
   58         switch (*cmd) {
   59         case CAMIOCOMMAND_0x16:
   60         {
   61                 union ccb *ccb;
   62 
   63                 ccb = (union ccb *)*addr;
   64                 if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS_0x16) {
   65                         ccb->ccb_h.flags &= ~CAM_SG_LIST_PHYS_0x16;
   66                         ccb->ccb_h.flags |= CAM_DATA_SG_PADDR;
   67                 }
   68                 if (ccb->ccb_h.flags & CAM_DATA_PHYS_0x16) {
   69                         ccb->ccb_h.flags &= ~CAM_DATA_PHYS_0x16;
   70                         ccb->ccb_h.flags |= CAM_DATA_PADDR;
   71                 }
   72                 if (ccb->ccb_h.flags & CAM_SCATTER_VALID_0x16) {
   73                         ccb->ccb_h.flags &= CAM_SCATTER_VALID_0x16;
   74                         ccb->ccb_h.flags |= CAM_DATA_SG;
   75                 }
   76                 *cmd = CAMIOCOMMAND;
   77                 error = EAGAIN;
   78                 break;
   79         }
   80         case CAMGETPASSTHRU_0x16:
   81                 *cmd = CAMGETPASSTHRU;
   82                 error = EAGAIN;
   83                 break;
   84         default:
   85                 error = ENOTTY;
   86         }
   87 
   88         return (error);
   89 }

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FreeBSD/Linux Kernel Cross Reference sys/cam/cam_compat.c

FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_compat.c