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/* $OpenBSD: linux_blkio.c,v 1.8 2010/05/18 04:41:14 dlg Exp $ */
/* $NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden for Wasabi Systems, Inc.
*
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/disklabel.h>
#include <sys/dkio.h>
#include <sys/syscallargs.h>
#include <compat/linux/linux_types.h>
#include <compat/linux/linux_ioctl.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_util.h>
#include <compat/linux/linux_blkio.h>
#include <compat/linux/linux_syscallargs.h>
int
linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap,
register_t *retval)
{
u_long com;
long size;
int error;
struct filedesc *fdp;
struct file *fp;
int (*ioctlf)(struct file *, u_long, caddr_t, struct proc *);
struct partinfo partp;
struct disklabel label;
fdp = p->p_fd;
if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
return (EBADF);
FREF(fp);
error = 0;
ioctlf = fp->f_ops->fo_ioctl;
com = SCARG(uap, com);
switch (com) {
case LINUX_BLKGETSIZE:
/*
* Try to get the partition size of this device. If that
* fails, it may be a disk without label; try to get
* the default label and compute the size from it.
*/
error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p);
if (error != 0) {
error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
if (error != 0)
break;
size = label.d_nsectors * label.d_ntracks *
label.d_ncylinders;
} else
/* XXX ignores > 32bit blocks */
size = DL_GETPSIZE(partp.part);
error = copyout(&size, SCARG(uap, data), sizeof size);
break;
case LINUX_BLKSECTGET:
error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
if (error != 0)
break;
error = copyout(&label.d_secsize, SCARG(uap, data),
sizeof label.d_secsize);
break;
case LINUX_BLKROSET:
case LINUX_BLKROGET:
case LINUX_BLKRRPART:
case LINUX_BLKFLSBUF:
case LINUX_BLKRASET:
case LINUX_BLKRAGET:
case LINUX_BLKFRASET:
case LINUX_BLKFRAGET:
case LINUX_BLKSECTSET:
case LINUX_BLKSSZGET:
case LINUX_BLKPG:
default:
error = ENOTTY;
}
FRELE(fp);
return error;
}
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