1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009 IronPort Systems Inc. <ambrisko@ironport.com>
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 ipmi 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#include <sys/ioccom.h>
53#include <sys/ipmi.h>
54
55/* There are multiple ioctl number ranges that need to be handled */
56#define IPMI_LINUX_IOCTL_MIN  0x690b
57#define IPMI_LINUX_IOCTL_MAX  0x6915
58
59/* Linux versions of ioctl's */
60#define L_IPMICTL_RECEIVE_MSG_TRUNC       _IOWR(IPMI_IOC_MAGIC, 11, struct ipmi_recv)
61#define L_IPMICTL_RECEIVE_MSG             _IOWR(IPMI_IOC_MAGIC, 12, struct ipmi_recv)
62#define L_IPMICTL_SEND_COMMAND            _IOW(IPMI_IOC_MAGIC, 13, struct ipmi_req)
63#define L_IPMICTL_REGISTER_FOR_CMD        _IOW(IPMI_IOC_MAGIC, 14, struct ipmi_cmdspec)
64#define L_IPMICTL_UNREGISTER_FOR_CMD      _IOW(IPMI_IOC_MAGIC, 15, struct ipmi_cmdspec)
65#define L_IPMICTL_SET_GETS_EVENTS_CMD     _IOW(IPMI_IOC_MAGIC, 16, int)
66#define L_IPMICTL_SET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 17, unsigned int)
67#define L_IPMICTL_GET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 18, unsigned int)
68#define L_IPMICTL_SET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 19, unsigned int)
69#define L_IPMICTL_GET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 20, unsigned int)
70
71static linux_ioctl_function_t ipmi_linux_ioctl;
72static struct linux_ioctl_handler ipmi_linux_handler = {ipmi_linux_ioctl,
73						       IPMI_LINUX_IOCTL_MIN,
74						       IPMI_LINUX_IOCTL_MAX};
75
76SYSINIT  (ipmi_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
77	  linux_ioctl_register_handler, &ipmi_linux_handler);
78SYSUNINIT(ipmi_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
79	  linux_ioctl_unregister_handler, &ipmi_linux_handler);
80
81static int
82ipmi_linux_modevent(module_t mod, int type, void *data)
83{
84	/* Do we care about any specific load/unload actions? */
85	return (0);
86}
87
88DEV_MODULE(ipmi_linux, ipmi_linux_modevent, NULL);
89MODULE_DEPEND(ipmi_linux, linux, 1, 1, 1);
90
91static int
92ipmi_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
93{
94	cap_rights_t rights;
95	struct file *fp;
96	u_long cmd;
97	int error;
98
99	error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL),
100	    &fp);
101	if (error != 0)
102		return (error);
103	cmd = args->cmd;
104
105	switch(cmd) {
106	case L_IPMICTL_GET_MY_ADDRESS_CMD:
107		cmd = IPMICTL_GET_MY_ADDRESS_CMD;
108		break;
109	case L_IPMICTL_GET_MY_LUN_CMD:
110		cmd = IPMICTL_GET_MY_LUN_CMD;
111		break;
112	}
113	/*
114	 * Pass the ioctl off to our standard handler.
115	 */
116	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
117	fdrop(fp, td);
118	return (error);
119}
120