215 lines
6.0 KiB
C
215 lines
6.0 KiB
C
/* $NetBSD: linux_ioctl.c,v 1.58 2014/03/23 06:03:38 dholland Exp $ */
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/*-
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* Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Frank van der Linden and Eric Haszlakiewicz.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.58 2014/03/23 06:03:38 dholland Exp $");
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#if defined(_KERNEL_OPT)
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#include "sequencer.h"
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#endif
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/file.h>
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#include <sys/vnode.h>
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#include <sys/filedesc.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <sys/sockio.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_signal.h>
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#include <compat/linux/common/linux_ioctl.h>
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#include <compat/linux/common/linux_ipc.h>
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#include <compat/linux/common/linux_sem.h>
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#include <compat/linux/linux_syscallargs.h>
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#include <compat/ossaudio/ossaudio.h>
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#define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */
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#include <dev/ic/mfiio.h>
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#define LINUX_MEGARAID_CMD _LINUX_IOWR('M', 1, struct mfi_ioc_packet)
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#define LINUX_MEGARAID_GET_AEN _LINUX_IOW('M', 3, struct mfi_ioc_aen)
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/*
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* Most ioctl command are just converted to their NetBSD values,
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* and passed on. The ones that take structure pointers and (flag)
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* values need some massaging.
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*/
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int
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linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(u_long) com;
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syscallarg(void *) data;
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} */
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int error;
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switch (LINUX_IOCGROUP(SCARG(uap, com))) {
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case 'M':
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switch(SCARG(uap, com)) {
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case LINUX_MEGARAID_CMD:
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case LINUX_MEGARAID_GET_AEN:
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{
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struct sys_ioctl_args ua;
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u_long com = 0;
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if (SCARG(uap, com) & IOC_IN)
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com |= IOC_OUT;
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if (SCARG(uap, com) & IOC_OUT)
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com |= IOC_IN;
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SCARG(&ua, fd) = SCARG(uap, fd);
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SCARG(&ua, com) = SCARG(uap, com);
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SCARG(&ua, com) &= ~IOC_DIRMASK;
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SCARG(&ua, com) |= com;
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SCARG(&ua, data) = SCARG(uap, data);
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error = sys_ioctl(l, (const void *)&ua, retval);
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break;
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}
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default:
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error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval);
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break;
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}
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break;
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case 'Q':
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error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval);
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break;
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case 'P':
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error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval);
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break;
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case 'V': /* video4linux2 */
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case 'd': /* drm */
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{
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struct sys_ioctl_args ua;
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u_long com = 0;
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if (SCARG(uap, com) & IOC_IN)
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com |= IOC_OUT;
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if (SCARG(uap, com) & IOC_OUT)
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com |= IOC_IN;
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SCARG(&ua, fd) = SCARG(uap, fd);
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SCARG(&ua, com) = SCARG(uap, com);
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SCARG(&ua, com) &= ~IOC_DIRMASK;
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SCARG(&ua, com) |= com;
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SCARG(&ua, data) = SCARG(uap, data);
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error = sys_ioctl(l, (const void *)&ua, retval);
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break;
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}
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case 'r': /* VFAT ioctls; not yet supported */
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error = ENOSYS;
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break;
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case 'S':
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error = linux_ioctl_cdrom(l, uap, retval);
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break;
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case 't':
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case 'f':
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error = linux_ioctl_termios(l, uap, retval);
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break;
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case 'm':
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error = linux_ioctl_mtio(l, uap, retval);
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break;
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case 'T':
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{
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#if NSEQUENCER > 0
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/* XXX XAX 2x check this. */
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/*
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* Both termios and the MIDI sequencer use 'T' to identify
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* the ioctl, so we have to differentiate them in another
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* way. We do it by indexing in the cdevsw with the major
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* device number and check if that is the sequencer entry.
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*/
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bool is_sequencer = false;
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struct file *fp;
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struct vnode *vp;
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struct vattr va;
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extern const struct cdevsw sequencer_cdevsw;
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if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
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return EBADF;
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if (fp->f_type == DTYPE_VNODE &&
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(vp = (struct vnode *)fp->f_data) != NULL &&
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vp->v_type == VCHR) {
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vn_lock(vp, LK_SHARED | LK_RETRY);
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error = VOP_GETATTR(vp, &va, l->l_cred);
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VOP_UNLOCK(vp);
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if (error == 0 &&
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cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw)
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is_sequencer = true;
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}
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if (is_sequencer) {
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error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap),
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retval);
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}
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else {
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error = linux_ioctl_termios(l, uap, retval);
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}
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fd_putfile(SCARG(uap, fd));
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#else
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error = linux_ioctl_termios(l, uap, retval);
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#endif
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}
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break;
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case '"':
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error = linux_ioctl_sg(l, uap, retval);
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break;
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case 0x89:
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error = linux_ioctl_socket(l, uap, retval);
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break;
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case 0x03:
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error = linux_ioctl_hdio(l, uap, retval);
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break;
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case 0x02:
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error = linux_ioctl_fdio(l, uap, retval);
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break;
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case 0x12:
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error = linux_ioctl_blkio(l, uap, retval);
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break;
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default:
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error = linux_machdepioctl(l, uap, retval);
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break;
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}
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if (error == EPASSTHROUGH) {
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/*
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* linux returns EINVAL or ENOTTY for not supported ioctls.
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*/
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error = EINVAL;
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}
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return error;
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}
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