sys/compat/linux/common/linux_fdio.c

   1 /*      $NetBSD: linux_fdio.c,v 1.12 2007/12/20 23:02:54 dsl 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_fdio.c,v 1.12 2007/12/20 23:02:54 dsl 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 <sys/fdio.h>
  51
  52 #include <sys/syscallargs.h>
  53
  54 #include <dev/isa/fdreg.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_fdio.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_fdio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
  68                  register_t *retval)
  69 {
  70         file_t *fp;
  71         int error;
  72         int (*ioctlf)(file_t *, u_long, void *);
  73         u_long com;
  74         struct fdformat_parms fparams;
  75         struct linux_floppy_struct lflop;
  76         struct linux_floppy_drive_struct ldrive;
  77
  78         com = (u_long)SCARG(uap, data);
  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
  86         retval[0] = error = 0;
  87
  88         switch (com) {
  89         case LINUX_FDMSGON:
  90         case LINUX_FDMSGOFF:
  91         case LINUX_FDTWADDLE:
  92         case LINUX_FDCLRPRM:
  93                 /* whatever you say */
  94                 break;
  95         case LINUX_FDPOLLDRVSTAT:
  96                 /*
  97                  * Just fill in some innocent defaults.
  98                  */
  99                 memset(&ldrive, 0, sizeof ldrive);
 100                 ldrive.fd_ref = 1;
 101                 ldrive.maxblock = 2;
 102                 ldrive.maxtrack = ldrive.track = 1;
 103                 ldrive.flags = LINUX_FD_DISK_WRITABLE;
 104                 error = copyout(&ldrive, SCARG(uap, data), sizeof ldrive);
 105                 break;
 106         case LINUX_FDGETPRM:
 107                 error = ioctlf(fp, FDIOCGETFORMAT, &fparams);
 108                 if (error != 0)
 109                         break;
 110                 lflop.size = fparams.ncyl * fparams.nspt * fparams.ntrk;
 111                 lflop.sect = fparams.nspt;
 112                 lflop.head = fparams.ntrk;
 113                 lflop.track = fparams.ncyl;
 114                 lflop.stretch = fparams.stepspercyl == 2 ? 1 : 0;
 115                 lflop.fmt_gap = fparams.gaplen;
 116                 /*
 117                  * XXXX Use knowledge of floppy for these fields.
 118                  * FDIOCGETFORMAT does not provide enough information.
 119                  * It would be better to have FDIOCGETFORMAT return more
 120                  * information.
 121                  */
 122                 switch (fparams.xfer_rate) {
 123                 case 500 * 1024:
 124                         lflop.spec1 = 0xcf;
 125                         lflop.gap = 0x1b;
 126                         lflop.rate = FDC_500KBPS;
 127                         break;
 128                 case 300 * 1024:
 129                         lflop.spec1 = 0xdf;
 130                         lflop.gap = 0x23;
 131                         lflop.rate = FDC_300KBPS;
 132                         break;
 133                 case 250 * 1024:
 134                         lflop.spec1 = 0xdf;
 135                         lflop.gap = 0x2a;
 136                         lflop.rate = FDC_250KBPS;
 137                         break;
 138                 }
 139                 error = copyout(&lflop, SCARG(uap, data), sizeof lflop);
 140                 break;
 141         case LINUX_FDSETPRM:
 142                 /*
 143                  * Should use FDIOCSETFORMAT here, iff its interface
 144                  * is extended.
 145                  */
 146         case LINUX_FDDEFPRM:
 147         case LINUX_FDFMTBEG:
 148         case LINUX_FDFMTTRK:
 149         case LINUX_FDFMTEND:
 150         case LINUX_FDSETEMSGTRESH:
 151         case LINUX_FDFLUSH:
 152         case LINUX_FDSETMAXERRS:
 153         case LINUX_FDGETMAXERRS:
 154         case LINUX_FDGETDRVTYP:
 155         case LINUX_FDSETDRVPRM:
 156         case LINUX_FDGETDRVPRM:
 157         case LINUX_FDGETDRVSTAT:
 158         case LINUX_FDRESET:
 159         case LINUX_FDGETFDCSTAT:
 160         case LINUX_FDWERRORCLR:
 161         case LINUX_FDWERRORGET:
 162         case LINUX_FDRAWCMD:
 163         case LINUX_FDEJECT:
 164         default:
 165                 error = EINVAL;
 166         }
 167
 168         fd_putfile(SCARG(uap, fd));
 169
 170         return 0;
 171 }