1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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 /*
31 * Linux ioctl handler for the aac device driver
32 */
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/capsicum.h>
37 #include <sys/conf.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/file.h>
41 #include <sys/proc.h>
42 #ifdef __amd64__
43 #include <machine/../linux32/linux.h>
44 #include <machine/../linux32/linux32_proto.h>
45 #else
46 #include <machine/../linux/linux.h>
47 #include <machine/../linux/linux_proto.h>
48 #endif
49 #include <compat/linux/linux_ioctl.h>
50
51 /* There are multiple ioctl number ranges that need to be handled */
52 #define AAC_LINUX_IOCTL_MIN 0x0000
53 #define AAC_LINUX_IOCTL_MAX 0x21ff
54
55 static linux_ioctl_function_t aac_linux_ioctl;
56 static struct linux_ioctl_handler aac_linux_handler = {aac_linux_ioctl,
57 AAC_LINUX_IOCTL_MIN,
58 AAC_LINUX_IOCTL_MAX};
59
60 SYSINIT (aac_linux_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
61 linux_ioctl_register_handler, &aac_linux_handler);
62 SYSUNINIT(aac_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
63 linux_ioctl_unregister_handler, &aac_linux_handler);
64
65 static int
aac_linux_modevent(module_t mod,int type,void * data)66 aac_linux_modevent(module_t mod, int type, void *data)
67 {
68 /* Do we care about any specific load/unload actions? */
69 return (0);
70 }
71
72 DEV_MODULE(aac_linux, aac_linux_modevent, NULL);
73 MODULE_DEPEND(aac_linux, linux, 1, 1, 1);
74
75 static int
aac_linux_ioctl(struct thread * td,struct linux_ioctl_args * args)76 aac_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
77 {
78 cap_rights_t rights;
79 struct file *fp;
80 u_long cmd;
81 int error;
82
83 error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL),
84 &fp);
85 if (error != 0)
86 return (error);
87 cmd = args->cmd;
88
89 /*
90 * Pass the ioctl off to our standard handler.
91 */
92 error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
93 fdrop(fp, td);
94 return (error);
95 }
96