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
25struct snd_seq_port_info32 {
26	struct snd_seq_addr addr;	/* client/port numbers */
27	char name[64];			/* port name */
28
29	u32 capability;	/* port capability bits */
30	u32 type;		/* port type bits */
31	s32 midi_channels;		/* channels per MIDI port */
32	s32 midi_voices;		/* voices per MIDI port */
33	s32 synth_voices;		/* voices per SYNTH port */
34
35	s32 read_use;			/* R/O: subscribers for output (from this port) */
36	s32 write_use;			/* R/O: subscribers for input (to this port) */
37
38	u32 kernel;			/* reserved for kernel use (must be NULL) */
39	u32 flags;		/* misc. conditioning */
40	unsigned char time_queue;	/* queue # for timestamping */
41	char reserved[59];		/* for future use */
42};
43
44static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
45					struct snd_seq_port_info32 __user *data32)
46{
47	int err = -EFAULT;
48	struct snd_seq_port_info *data;
49	mm_segment_t fs;
50
51	data = kmalloc(sizeof(*data), GFP_KERNEL);
52	if (! data)
53		return -ENOMEM;
54
55	if (copy_from_user(data, data32, sizeof(*data32)) ||
56	    get_user(data->flags, &data32->flags) ||
57	    get_user(data->time_queue, &data32->time_queue))
58		goto error;
59	data->kernel = NULL;
60
61	fs = snd_enter_user();
62	err = snd_seq_do_ioctl(client, cmd, data);
63	snd_leave_user(fs);
64	if (err < 0)
65		goto error;
66
67	if (copy_to_user(data32, data, sizeof(*data32)) ||
68	    put_user(data->flags, &data32->flags) ||
69	    put_user(data->time_queue, &data32->time_queue))
70		err = -EFAULT;
71
72 error:
73	kfree(data);
74	return err;
75}
76
77
78
79/*
80 */
81
82enum {
83	SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
84	SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
85	SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
86	SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
87	SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
88};
89
90static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
91{
92	struct snd_seq_client *client = file->private_data;
93	void __user *argp = compat_ptr(arg);
94
95	snd_assert(client != NULL, return -ENXIO);
96
97	switch (cmd) {
98	case SNDRV_SEQ_IOCTL_PVERSION:
99	case SNDRV_SEQ_IOCTL_CLIENT_ID:
100	case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
101	case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
102	case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
103	case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
104	case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
105	case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
106	case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
107	case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
108	case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
109	case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
110	case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
111	case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
112	case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
113	case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
114	case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
115	case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
116	case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
117	case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
118	case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
119	case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
120	case SNDRV_SEQ_IOCTL_QUERY_SUBS:
121	case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
122	case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
123	case SNDRV_SEQ_IOCTL_RUNNING_MODE:
124		return snd_seq_do_ioctl(client, cmd, argp);
125	case SNDRV_SEQ_IOCTL_CREATE_PORT32:
126		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
127	case SNDRV_SEQ_IOCTL_DELETE_PORT32:
128		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
129	case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
130		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
131	case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
132		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
133	case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
134		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
135	}
136	return -ENOIOCTLCMD;
137}
138