126 lines
3.9 KiB
C
126 lines
3.9 KiB
C
/* $NetBSD: linux_blkio.c,v 1.5 2001/11/13 02:08:48 lukem 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: linux_blkio.c,v 1.5 2001/11/13 02:08:48 lukem Exp $");
|
|
|
|
#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/syscallargs.h>
|
|
|
|
#include <compat/linux/common/linux_types.h>
|
|
#include <compat/linux/common/linux_ioctl.h>
|
|
#include <compat/linux/common/linux_signal.h>
|
|
#include <compat/linux/common/linux_util.h>
|
|
#include <compat/linux/common/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) __P((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);
|
|
|
|
FILE_USE(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, DIOCGDEFLABEL, (caddr_t)&label, p);
|
|
if (error != 0)
|
|
break;
|
|
size = label.d_nsectors * label.d_ntracks *
|
|
label.d_ncylinders;
|
|
} else
|
|
size = partp.part->p_size;
|
|
error = copyout(&size, SCARG(uap, data), sizeof size);
|
|
break;
|
|
case LINUX_BLKSECTGET:
|
|
error = ioctlf(fp, DIOCGDEFLABEL, (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;
|
|
}
|
|
|
|
FILE_UNUSE(fp, p);
|
|
|
|
return error;
|
|
}
|