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https://github.com/freebsd/freebsd-src
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2873d841f8
This is in preparation for annotating copyin() and related functions with __result_use_check. MFC after: 1 week
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2006 The FreeBSD Project
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* All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/capsicum.h>
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#include <sys/file.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <dev/tdfx/tdfx_linux.h>
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LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX);
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/*
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* Linux emulation IOCTL for /dev/tdfx
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*/
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static int
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linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args)
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{
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cap_rights_t rights;
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int error = 0;
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u_long cmd = args->cmd & 0xffff;
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/* The structure passed to ioctl has two shorts, one int
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and one void*. */
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char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)];
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struct file *fp;
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error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL), &fp);
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if (error != 0)
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return (error);
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/* We simply copy the data and send it right to ioctl */
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error = copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio));
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if (error == 0)
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error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td);
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fdrop(fp, td);
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return error;
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}
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static int
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tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused)
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{
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switch (what) {
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case MOD_LOAD:
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case MOD_UNLOAD:
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return (0);
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}
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return (EOPNOTSUPP);
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}
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static moduledata_t tdfx_linux_mod = {
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"tdfx_linux",
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tdfx_linux_modevent,
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0
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};
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/* As in SYSCALL_MODULE */
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DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
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MODULE_VERSION(tdfx_linux, 1);
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MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1);
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MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1);
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