The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/common/linux_hdio.c

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    1 /*      $NetBSD: linux_hdio.c,v 1.16 2008/03/21 21:54:58 ad Exp $       */
    2 
    3 /*
    4  * Copyright (c) 2000 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Frank van der Linden for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 #include <sys/cdefs.h>
   39 __KERNEL_RCSID(0, "$NetBSD: linux_hdio.c,v 1.16 2008/03/21 21:54:58 ad Exp $");
   40 
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/ioctl.h>
   44 #include <sys/file.h>
   45 #include <sys/filedesc.h>
   46 #include <sys/mount.h>
   47 #include <sys/proc.h>
   48 #include <sys/disklabel.h>
   49 
   50 #include <dev/ata/atareg.h>
   51 #include <dev/ic/wdcreg.h>
   52 #include <sys/ataio.h>
   53 
   54 #include <sys/syscallargs.h>
   55 
   56 #include <compat/linux/common/linux_types.h>
   57 #include <compat/linux/common/linux_ioctl.h>
   58 #include <compat/linux/common/linux_signal.h>
   59 #include <compat/linux/common/linux_util.h>
   60 #include <compat/linux/common/linux_hdio.h>
   61 #include <compat/linux/common/linux_ipc.h>
   62 #include <compat/linux/common/linux_sem.h>
   63 
   64 #include <compat/linux/linux_syscallargs.h>
   65 
   66 int
   67 linux_ioctl_hdio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
   68                  register_t *retval)
   69 {
   70         u_long com;
   71         int error, error1;
   72         struct file *fp;
   73         int (*ioctlf)(struct file *, u_long, void *);
   74         struct atareq req;
   75         struct disklabel label, *labp;
   76         struct partinfo partp;
   77         struct linux_hd_geometry hdg;
   78         struct linux_hd_big_geometry hdg_big;
   79 
   80         if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
   81                 return (EBADF);
   82 
   83         com = SCARG(uap, com);
   84         ioctlf = fp->f_ops->fo_ioctl;
   85         retval[0] = error = 0;
   86 
   87         switch (com) {
   88         case LINUX_HDIO_OBSOLETE_IDENTITY:
   89         case LINUX_HDIO_GET_IDENTITY:
   90                 req.flags = ATACMD_READ;
   91                 req.command = WDCC_IDENTIFY;
   92                 req.databuf = SCARG(uap, data);
   93                 /*
   94                  * 142 is the size of the old structure used by Linux,
   95                  * which doesn't seem to be defined anywhere anymore.
   96                  * The new function should return the entire 512 byte area.
   97                  */
   98                 req.datalen = com == LINUX_HDIO_GET_IDENTITY ? 512 : 142;
   99                 req.timeout = 1000;
  100                 error = ioctlf(fp, ATAIOCCOMMAND, &req);
  101                 if (error != 0)
  102                         break;
  103                 if (req.retsts != ATACMD_OK)
  104                         error = EIO;
  105                 break;
  106         case LINUX_HDIO_GETGEO:
  107                 error = linux_machdepioctl(l, uap, retval);
  108                 if (error == 0)
  109                         break;
  110                 error = ioctlf(fp, DIOCGDEFLABEL, &label);
  111                 error1 = ioctlf(fp, DIOCGPART, &partp);
  112                 if (error != 0 && error1 != 0) {
  113                         error = error1;
  114                         break;
  115                 }
  116                 labp = error != 0 ? &label : partp.disklab;
  117                 hdg.start = error1 != 0 ? partp.part->p_offset : 0;
  118                 hdg.heads = labp->d_ntracks;
  119                 hdg.cylinders = labp->d_ncylinders;
  120                 hdg.sectors = labp->d_nsectors;
  121                 error = copyout(&hdg, SCARG(uap, data), sizeof hdg);
  122                 break;
  123         case LINUX_HDIO_GETGEO_BIG:
  124                 error = linux_machdepioctl(l, uap, retval);
  125                 if (error == 0)
  126                         break;
  127         case LINUX_HDIO_GETGEO_BIG_RAW:
  128                 error = ioctlf(fp, DIOCGDEFLABEL, &label);
  129                 error1 = ioctlf(fp, DIOCGPART, &partp);
  130                 if (error != 0 && error1 != 0) {
  131                         error = error1;
  132                         break;
  133                 }
  134                 labp = error != 0 ? &label : partp.disklab;
  135                 hdg_big.start = error1 != 0 ? partp.part->p_offset : 0;
  136                 hdg_big.heads = labp->d_ntracks;
  137                 hdg_big.cylinders = labp->d_ncylinders;
  138                 hdg_big.sectors = labp->d_nsectors;
  139                 error = copyout(&hdg_big, SCARG(uap, data), sizeof hdg_big);
  140                 break;
  141         case LINUX_HDIO_GET_UNMASKINTR:
  142         case LINUX_HDIO_GET_MULTCOUNT:
  143         case LINUX_HDIO_GET_KEEPSETTINGS:
  144         case LINUX_HDIO_GET_32BIT:
  145         case LINUX_HDIO_GET_NOWERR:
  146         case LINUX_HDIO_GET_DMA:
  147         case LINUX_HDIO_GET_NICE:
  148         case LINUX_HDIO_DRIVE_RESET:
  149         case LINUX_HDIO_TRISTATE_HWIF:
  150         case LINUX_HDIO_DRIVE_TASK:
  151         case LINUX_HDIO_DRIVE_CMD:
  152         case LINUX_HDIO_SET_MULTCOUNT:
  153         case LINUX_HDIO_SET_UNMASKINTR:
  154         case LINUX_HDIO_SET_KEEPSETTINGS:
  155         case LINUX_HDIO_SET_32BIT:
  156         case LINUX_HDIO_SET_NOWERR:
  157         case LINUX_HDIO_SET_DMA:
  158         case LINUX_HDIO_SET_PIO_MODE:
  159         case LINUX_HDIO_SCAN_HWIF:
  160         case LINUX_HDIO_SET_NICE:
  161         case LINUX_HDIO_UNREGISTER_HWIF:
  162                 error = EINVAL;
  163         }
  164 
  165         fd_putfile(SCARG(uap, fd));
  166 
  167         return error;
  168 }

Cache object: 327555f40d6041b10d4d2ce7960a6d94


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