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/* $NetBSD: linux_ioctl.c,v 1.59 2021/09/19 23:51:37 thorpej Exp $ */
/*-
* Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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_ioctl.c,v 1.59 2021/09/19 23:51:37 thorpej Exp $");
#if defined(_KERNEL_OPT)
#include "sequencer.h"
#endif
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/filedesc.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/sockio.h>
#include <sys/syscallargs.h>
#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_ioctl.h>
#include <compat/linux/common/linux_ipc.h>
#include <compat/linux/common/linux_sem.h>
#include <compat/linux/linux_syscallargs.h>
#include <compat/ossaudio/ossaudio.h>
#define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */
#include <dev/ic/mfiio.h>
#define LINUX_MEGARAID_CMD _LINUX_IOWR('M', 1, struct mfi_ioc_packet)
#define LINUX_MEGARAID_GET_AEN _LINUX_IOW('M', 3, struct mfi_ioc_aen)
/*
* Most ioctl command are just converted to their NetBSD values,
* and passed on. The ones that take structure pointers and (flag)
* values need some massaging.
*/
int
linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(u_long) com;
syscallarg(void *) data;
} */
int error;
switch (LINUX_IOCGROUP(SCARG(uap, com))) {
case 'M':
switch(SCARG(uap, com)) {
case LINUX_MEGARAID_CMD:
case LINUX_MEGARAID_GET_AEN:
{
struct sys_ioctl_args ua;
u_long com = 0;
if (SCARG(uap, com) & IOC_IN)
com |= IOC_OUT;
if (SCARG(uap, com) & IOC_OUT)
com |= IOC_IN;
SCARG(&ua, fd) = SCARG(uap, fd);
SCARG(&ua, com) = SCARG(uap, com);
SCARG(&ua, com) &= ~IOC_DIRMASK;
SCARG(&ua, com) |= com;
SCARG(&ua, data) = SCARG(uap, data);
error = sys_ioctl(l, (const void *)&ua, retval);
break;
}
default:
error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval);
break;
}
break;
case 'Q':
error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval);
break;
case 'P':
error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval);
break;
case 'V': /* video4linux2 */
case 'd': /* drm */
{
struct sys_ioctl_args ua;
u_long com = 0;
if (SCARG(uap, com) & IOC_IN)
com |= IOC_OUT;
if (SCARG(uap, com) & IOC_OUT)
com |= IOC_IN;
SCARG(&ua, fd) = SCARG(uap, fd);
SCARG(&ua, com) = SCARG(uap, com);
SCARG(&ua, com) &= ~IOC_DIRMASK;
SCARG(&ua, com) |= com;
SCARG(&ua, data) = SCARG(uap, data);
error = sys_ioctl(l, (const void *)&ua, retval);
break;
}
case 'r': /* VFAT ioctls; not yet supported */
error = ENOSYS;
break;
case 'S':
error = linux_ioctl_cdrom(l, uap, retval);
break;
case 't':
case 'f':
error = linux_ioctl_termios(l, uap, retval);
break;
case 'm':
error = linux_ioctl_mtio(l, uap, retval);
break;
case 'T':
{
/*
* Termios, the MIDI sequencer, and timerfd use 'T' to
* identify the ioctl, so we have to differentiate them
* in another way.
*
* XXX XAX 2x check this.
*/
struct file *fp;
if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
return EBADF;
if (fp->f_type == DTYPE_TIMERFD) {
error = linux_ioctl_timerfd(l, uap, retval);
fd_putfile(SCARG(uap, fd));
break;
}
#if NSEQUENCER > 0
struct vnode *vp;
if (fp->f_type == DTYPE_VNODE &&
(vp = (struct vnode *)fp->f_data) != NULL &&
vp->v_type == VCHR) {
struct vattr va;
extern const struct cdevsw sequencer_cdevsw;
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(vp, &va, l->l_cred);
VOP_UNLOCK(vp);
if (error == 0 &&
cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) {
error = oss_ioctl_sequencer(l,
(const void *)LINUX_TO_OSS(uap), retval);
fd_putfile(SCARG(uap, fd));
break;
}
}
#endif /* NSEQUENCER > 0 */
error = linux_ioctl_termios(l, uap, retval);
fd_putfile(SCARG(uap, fd));
break;
}
case '"':
error = linux_ioctl_sg(l, uap, retval);
break;
case 0x89:
error = linux_ioctl_socket(l, uap, retval);
break;
case 0x03:
error = linux_ioctl_hdio(l, uap, retval);
break;
case 0x02:
error = linux_ioctl_fdio(l, uap, retval);
break;
case 0x12:
error = linux_ioctl_blkio(l, uap, retval);
break;
default:
error = linux_machdepioctl(l, uap, retval);
break;
}
if (error == EPASSTHROUGH) {
/*
* linux returns EINVAL or ENOTTY for not supported ioctls.
*/
error = EINVAL;
}
return error;
}
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