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gerrit-public.fairphone.software / kernel / msm-4.9 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / sound / core / seq / seq_compat.c
blob: 902ad8b0c3551df679205b8d557c344b296495e6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]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 sndrv_seq_port_info32 {
26 struct sndrv_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(client_t *client, unsigned int cmd,
45 struct sndrv_seq_port_info32 __user *data32)
46{
47 int err = -EFAULT;
48 snd_seq_port_info_t *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 sndrv_seq_port_info32),
84 SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct sndrv_seq_port_info32),
85 SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct sndrv_seq_port_info32),
86 SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct sndrv_seq_port_info32),
87 SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct sndrv_seq_port_info32),
88};
89
90static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
91{
92 client_t *client = (client_t *) 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}