aacraid_linux.c revision 331722 
1/*-
2 * Copyright (c) 2002 Scott Long
3 * Copyright (c) 2002-2010 Adaptec, Inc.
4 * Copyright (c) 2010-2012 PMC-Sierra, Inc.
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: stable/11/sys/dev/aacraid/aacraid_linux.c 331722 2018-03-29 02:50:57Z eadler $");
31
32/*
33 * Linux ioctl handler for the aac device driver
34 */
35
36#include <sys/param.h>
37#if __FreeBSD_version >= 900000
38#include <sys/capsicum.h>
39#endif
40#include <sys/systm.h>
41#include <sys/conf.h>
42#include <sys/kernel.h>
43#include <sys/module.h>
44#include <sys/file.h>
45#include <sys/proc.h>
46#ifdef __amd64__
47#include <machine/../linux32/linux.h>
48#include <machine/../linux32/linux32_proto.h>
49#else
50#include <machine/../linux/linux.h>
51#include <machine/../linux/linux_proto.h>
52#endif
53#include <compat/linux/linux_ioctl.h>
54
55/* There are multiple ioctl number ranges that need to be handled */
56#define AAC_LINUX_IOCTL_MIN  0x0000
57#define AAC_LINUX_IOCTL_MAX  0x21ff
58
59static linux_ioctl_function_t aacraid_linux_ioctl;
60static struct linux_ioctl_handler aacraid_linux_handler = {aacraid_linux_ioctl,
61						       AAC_LINUX_IOCTL_MIN,
62						       AAC_LINUX_IOCTL_MAX};
63
64SYSINIT  (aacraid_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
65	  linux_ioctl_register_handler, &aacraid_linux_handler);
66SYSUNINIT(aacraid_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
67	  linux_ioctl_unregister_handler, &aacraid_linux_handler);
68
69static int
70aacraid_linux_modevent(module_t mod, int type, void *data)
71{
72	/* Do we care about any specific load/unload actions? */
73	return (0);
74}
75
76DEV_MODULE(aacraid_linux, aacraid_linux_modevent, NULL);
77MODULE_DEPEND(aacraid_linux, linux, 1, 1, 1);
78
79static int
80aacraid_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
81{
82	struct file *fp;
83#if __FreeBSD_version >= 900000
84	cap_rights_t rights;
85#endif
86	u_long cmd;
87	int error;
88
89	if ((error = fget(td, args->fd,
90#if __FreeBSD_version >= 900000
91	    cap_rights_init(&rights, CAP_IOCTL),
92#endif
93	    &fp)) != 0) {
94		return (error);
95	}
96	cmd = args->cmd;
97
98	/*
99	 * Pass the ioctl off to our standard handler.
100	 */
101	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
102	fdrop(fp, td);
103	return (error);
104}
105