1/*
2 *   32bit -> 64bit ioctl wrapper for sequencer API
3 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
4 *
5 *   This program is free software; you can redistribute it and/or modify
6 *   it under the terms of the GNU General Public License as published by
7 *   the Free Software Foundation; either version 2 of the License, or
8 *   (at your option) any later version.
9 *
10 *   This program is distributed in the hope that it will be useful,
11 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 *   GNU General Public License for more details.
14 *
15 *   You should have received a copy of the GNU General Public License
16 *   along with this program; if not, write to the Free Software
17 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
18 *
19 */
20
21/* This file included from seq.c */
22
23#include <linux/compat.h>
24#include <linux/slab.h>
25
26struct snd_seq_port_info32 {
27	struct snd_seq_addr addr;	/* client/port numbers */
28	char name[64];			/* port name */
29
30	u32 capability;	/* port capability bits */
31	u32 type;		/* port type bits */
32	s32 midi_channels;		/* channels per MIDI port */
33	s32 midi_voices;		/* voices per MIDI port */
34	s32 synth_voices;		/* voices per SYNTH port */
35
36	s32 read_use;			/* R/O: subscribers for output (from this port) */
37	s32 write_use;			/* R/O: subscribers for input (to this port) */
38
39	u32 kernel;			/* reserved for kernel use (must be NULL) */
40	u32 flags;		/* misc. conditioning */
41	unsigned char time_queue;	/* queue # for timestamping */
42	char reserved[59];		/* for future use */
43};
44
45static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
46					struct snd_seq_port_info32 __user *data32)
47{
48	int err = -EFAULT;
49	struct snd_seq_port_info *data;
50	mm_segment_t fs;
51
52	data = kmalloc(sizeof(*data), GFP_KERNEL);
53	if (!data)
54		return -ENOMEM;
55
56	if (copy_from_user(data, data32, sizeof(*data32)) ||
57	    get_user(data->flags, &data32->flags) ||
58	    get_user(data->time_queue, &data32->time_queue))
59		goto error;
60	data->kernel = NULL;
61
62	fs = snd_enter_user();
63	err = snd_seq_do_ioctl(client, cmd, data);
64	snd_leave_user(fs);
65	if (err < 0)
66		goto error;
67
68	if (copy_to_user(data32, data, sizeof(*data32)) ||
69	    put_user(data->flags, &data32->flags) ||
70	    put_user(data->time_queue, &data32->time_queue))
71		err = -EFAULT;
72
73 error:
74	kfree(data);
75	return err;
76}
77
78
79
80/*
81 */
82
83enum {
84	SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
85	SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
86	SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
87	SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
88	SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
89};
90
91static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
92{
93	struct snd_seq_client *client = file->private_data;
94	void __user *argp = compat_ptr(arg);
95
96	if (snd_BUG_ON(!client))
97		return -ENXIO;
98
99	switch (cmd) {
100	case SNDRV_SEQ_IOCTL_PVERSION:
101	case SNDRV_SEQ_IOCTL_CLIENT_ID:
102	case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
103	case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
104	case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
105	case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
106	case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
107	case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
108	case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
109	case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
110	case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
111	case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
112	case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
113	case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
114	case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
115	case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
116	case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
117	case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
118	case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
119	case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
120	case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
121	case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
122	case SNDRV_SEQ_IOCTL_QUERY_SUBS:
123	case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
124	case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
125	case SNDRV_SEQ_IOCTL_RUNNING_MODE:
126		return snd_seq_do_ioctl(client, cmd, argp);
127	case SNDRV_SEQ_IOCTL_CREATE_PORT32:
128		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
129	case SNDRV_SEQ_IOCTL_DELETE_PORT32:
130		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
131	case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
132		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
133	case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
134		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
135	case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
136		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
137	}
138	return -ENOIOCTLCMD;
139}
140