1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002 Scott Long
5 * Copyright (c) 2002-2010 Adaptec, Inc.
6 * Copyright (c) 2010-2012 PMC-Sierra, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 /*
33 * Linux ioctl handler for the aac device driver
34 */
35
36 #include <sys/param.h>
37 #include <sys/capsicum.h>
38 #include <sys/systm.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
57 static linux_ioctl_function_t aacraid_linux_ioctl;
58 static struct linux_ioctl_handler aacraid_linux_handler = {aacraid_linux_ioctl,
59 AAC_LINUX_IOCTL_MIN,
60 AAC_LINUX_IOCTL_MAX};
61
62 SYSINIT (aacraid_linux_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
63 linux_ioctl_register_handler, &aacraid_linux_handler);
64 SYSUNINIT(aacraid_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
65 linux_ioctl_unregister_handler, &aacraid_linux_handler);
66
67 static int
aacraid_linux_modevent(module_t mod,int type,void * data)68 aacraid_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
74 DEV_MODULE(aacraid_linux, aacraid_linux_modevent, NULL);
75 MODULE_DEPEND(aacraid_linux, linux, 1, 1, 1);
76
77 static int
aacraid_linux_ioctl(struct thread * td,struct linux_ioctl_args * args)78 aacraid_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
79 {
80 struct file *fp;
81 cap_rights_t rights;
82 u_long cmd;
83 int error;
84
85 if ((error = fget(td, args->fd,
86 cap_rights_init_one(&rights, CAP_IOCTL),
87 &fp)) != 0) {
88 return (error);
89 }
90 cmd = args->cmd;
91
92 /*
93 * Pass the ioctl off to our standard handler.
94 */
95 error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
96 fdrop(fp, td);
97 return (error);
98 }
99