1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002 Scott Long
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32/*
33 * Linux ioctl handler for the aac device driver
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/capsicum.h>
39#include <sys/conf.h>
40#include <sys/kernel.h>
41#include <sys/module.h>
42#include <sys/file.h>
43#include <sys/proc.h>
44#ifdef __amd64__
45#include <machine/../linux32/linux.h>
46#include <machine/../linux32/linux32_proto.h>
47#else
48#include <machine/../linux/linux.h>
49#include <machine/../linux/linux_proto.h>
50#endif
51#include <compat/linux/linux_ioctl.h>
52
53/* There are multiple ioctl number ranges that need to be handled */
54#define AAC_LINUX_IOCTL_MIN  0x0000
55#define AAC_LINUX_IOCTL_MAX  0x21ff
56
57static linux_ioctl_function_t aac_linux_ioctl;
58static struct linux_ioctl_handler aac_linux_handler = {aac_linux_ioctl,
59						       AAC_LINUX_IOCTL_MIN,
60						       AAC_LINUX_IOCTL_MAX};
61
62SYSINIT  (aac_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
63	  linux_ioctl_register_handler, &aac_linux_handler);
64SYSUNINIT(aac_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
65	  linux_ioctl_unregister_handler, &aac_linux_handler);
66
67static int
68aac_linux_modevent(module_t mod, int type, void *data)
69{
70	/* Do we care about any specific load/unload actions? */
71	return (0);
72}
73
74DEV_MODULE(aac_linux, aac_linux_modevent, NULL);
75MODULE_DEPEND(aac_linux, linux, 1, 1, 1);
76
77static int
78aac_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
79{
80	cap_rights_t rights;
81	struct file *fp;
82	u_long cmd;
83	int error;
84
85	error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL),
86	    &fp);
87	if (error != 0)
88		return (error);
89	cmd = args->cmd;
90
91	/*
92	 * Pass the ioctl off to our standard handler.
93	 */
94	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
95	fdrop(fp, td);
96	return (error);
97}
98