projects/linux·blob master · refs

125 lines · 4.0 KiB

1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * 32bit -> 64bit ioctl wrapper for sequencer API
4 * Copyright (c) by Takashi Iwai <[email protected]>
5 */
6
7/* This file included from seq.c */
8
9#include <linux/compat.h>
10#include <linux/slab.h>
11
12struct snd_seq_port_info32 {
13 struct snd_seq_addr addr; /* client/port numbers */
14 char name[64]; /* port name */
15
16 u32 capability; /* port capability bits */
17 u32 type; /* port type bits */
18 s32 midi_channels; /* channels per MIDI port */
19 s32 midi_voices; /* voices per MIDI port */
20 s32 synth_voices; /* voices per SYNTH port */
21
22 s32 read_use; /* R/O: subscribers for output (from this port) */
23 s32 write_use; /* R/O: subscribers for input (to this port) */
24
25 u32 kernel; /* reserved for kernel use (must be NULL) */
26 u32 flags; /* misc. conditioning */
27 unsigned char time_queue; /* queue # for timestamping */
28 char reserved[59]; /* for future use */
29};
30
31static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
32 struct snd_seq_port_info32 __user *data32)
33{
34 int err;
35 struct snd_seq_port_info *data __free(kfree) =
36 kmalloc_obj(*data);
37
38 if (!data)
39 return -ENOMEM;
40
41 if (copy_from_user(data, data32, sizeof(*data32)) ||
42 get_user(data->flags, &data32->flags) ||
43 get_user(data->time_queue, &data32->time_queue))
44 return -EFAULT;
45 data->kernel = NULL;
46
47 scoped_guard(mutex, &client->ioctl_mutex) {
48 err = snd_seq_kernel_client_ctl(client->number, cmd, data);
49 }
50 if (err < 0)
51 return err;
52
53 if (copy_to_user(data32, data, sizeof(*data32)) ||
54 put_user(data->flags, &data32->flags) ||
55 put_user(data->time_queue, &data32->time_queue))
56 return -EFAULT;
57
58 return err;
59}
60
61
62
63/*
64 */
65
66enum {
67 SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
68 SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
69 SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
70 SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
71 SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
72};
73
74static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
75{
76 struct snd_seq_client *client = file->private_data;
77 void __user *argp = compat_ptr(arg);
78
79 if (snd_BUG_ON(!client))
80 return -ENXIO;
81
82 switch (cmd) {
83 case SNDRV_SEQ_IOCTL_PVERSION:
84 case SNDRV_SEQ_IOCTL_USER_PVERSION:
85 case SNDRV_SEQ_IOCTL_CLIENT_ID:
86 case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
87 case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
88 case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
89 case SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO:
90 case SNDRV_SEQ_IOCTL_SET_CLIENT_UMP_INFO:
91 case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
92 case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
93 case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
94 case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
95 case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
96 case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
97 case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
98 case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
99 case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
100 case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
101 case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
102 case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
103 case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
104 case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
105 case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
106 case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
107 case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
108 case SNDRV_SEQ_IOCTL_QUERY_SUBS:
109 case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
110 case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
111 case SNDRV_SEQ_IOCTL_RUNNING_MODE:
112 return snd_seq_ioctl(file, cmd, arg);
113 case SNDRV_SEQ_IOCTL_CREATE_PORT32:
114 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
115 case SNDRV_SEQ_IOCTL_DELETE_PORT32:
116 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
117 case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
118 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
119 case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
120 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
121 case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
122 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
123 }
124 return -ENOIOCTLCMD;
125}