125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* $NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv Exp $ */
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/disklabel.h>
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#include <sys/syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_ioctl.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/common/linux_blkio.h>
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#include <compat/linux/linux_syscallargs.h>
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int
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linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap,
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register_t *retval)
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{
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u_long com;
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long size;
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int error;
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struct filedesc *fdp;
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struct file *fp;
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int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *));
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struct partinfo partp;
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struct disklabel label;
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fdp = p->p_fd;
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if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
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(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
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(fp->f_iflags & FIF_WANTCLOSE) != 0)
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return (EBADF);
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FILE_USE(fp);
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error = 0;
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ioctlf = fp->f_ops->fo_ioctl;
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com = SCARG(uap, com);
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switch (com) {
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case LINUX_BLKGETSIZE:
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/*
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* Try to get the partition size of this device. If that
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* fails, it may be a disk without label; try to get
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* the default label and compute the size from it.
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*/
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error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p);
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if (error != 0) {
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error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p);
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if (error != 0)
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break;
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size = label.d_nsectors * label.d_ntracks *
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label.d_ncylinders;
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} else
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size = partp.part->p_size;
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error = copyout(&size, SCARG(uap, data), sizeof size);
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break;
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case LINUX_BLKSECTGET:
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error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p);
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if (error != 0)
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break;
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error = copyout(&label.d_secsize, SCARG(uap, data),
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sizeof label.d_secsize);
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break;
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case LINUX_BLKROSET:
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case LINUX_BLKROGET:
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case LINUX_BLKRRPART:
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case LINUX_BLKFLSBUF:
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case LINUX_BLKRASET:
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case LINUX_BLKRAGET:
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case LINUX_BLKFRASET:
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case LINUX_BLKFRAGET:
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case LINUX_BLKSECTSET:
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case LINUX_BLKSSZGET:
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case LINUX_BLKPG:
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default:
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error = ENOTTY;
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}
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FILE_UNUSE(fp, p);
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return error;
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}
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