1 /*-
2 * Copyright (c) 2005 Paul Saab
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/9.0/sys/dev/amr/amr_linux.c 224778 2011-08-11 12:30:23Z rwatson $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/capability.h>
34 #include <sys/conf.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/file.h>
38 #include <sys/proc.h>
39
40 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
41 #include <machine/../linux32/linux.h>
42 #include <machine/../linux32/linux32_proto.h>
43 #else
44 #include <machine/../linux/linux.h>
45 #include <machine/../linux/linux_proto.h>
46 #endif
47 #include <compat/linux/linux_ioctl.h>
48
49 /* There are multiple ioctl number ranges that need to be handled */
50 #define AMR_LINUX_IOCTL_MIN 0x6d00
51 #define AMR_LINUX_IOCTL_MAX 0x6d01
52
53 static linux_ioctl_function_t amr_linux_ioctl;
54 static struct linux_ioctl_handler amr_linux_handler = {amr_linux_ioctl,
55 AMR_LINUX_IOCTL_MIN,
56 AMR_LINUX_IOCTL_MAX};
57
58 SYSINIT (amr_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
59 linux_ioctl_register_handler, &amr_linux_handler);
60 SYSUNINIT(amr_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
61 linux_ioctl_unregister_handler, &amr_linux_handler);
62
63 static int
64 amr_linux_modevent(module_t mod, int cmd, void *data)
65 {
66 return (0);
67 }
68
69 DEV_MODULE(amr_linux, amr_linux_modevent, NULL);
70 MODULE_DEPEND(amr, linux, 1, 1, 1);
71
72 static int
73 amr_linux_ioctl(struct thread *p, struct linux_ioctl_args *args)
74 {
75 struct file *fp;
76 int error;
77
78 if ((error = fget(p, args->fd, CAP_IOCTL, &fp)) != 0)
79 return (error);
80 error = fo_ioctl(fp, args->cmd, (caddr_t)args->arg, p->td_ucred, p);
81 fdrop(fp, p);
82 return (error);
83 }
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