1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * 32bit -> 64bit ioctl wrapper for sequencer API
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
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 struct snd_seq_port_info *data __free(kfree) = NULL;
35 int err;
36
37 data = kmalloc(sizeof(*data), GFP_KERNEL);
38 if (!data)
39 return -ENOMEM;
40
41 if (copy_from_user(to: data, from: data32, n: 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 err = snd_seq_kernel_client_ctl(client: client->number, cmd, arg: data);
48 if (err < 0)
49 return err;
50
51 if (copy_to_user(to: data32, from: data, n: sizeof(*data32)) ||
52 put_user(data->flags, &data32->flags) ||
53 put_user(data->time_queue, &data32->time_queue))
54 return -EFAULT;
55
56 return err;
57}
58
59
60
61/*
62 */
63
64enum {
65 SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
66 SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
67 SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
68 SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
69 SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
70};
71
72static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
73{
74 struct snd_seq_client *client = file->private_data;
75 void __user *argp = compat_ptr(uptr: arg);
76
77 if (snd_BUG_ON(!client))
78 return -ENXIO;
79
80 switch (cmd) {
81 case SNDRV_SEQ_IOCTL_PVERSION:
82 case SNDRV_SEQ_IOCTL_USER_PVERSION:
83 case SNDRV_SEQ_IOCTL_CLIENT_ID:
84 case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
85 case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
86 case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
87 case SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO:
88 case SNDRV_SEQ_IOCTL_SET_CLIENT_UMP_INFO:
89 case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
90 case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
91 case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
92 case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
93 case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
94 case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
95 case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
96 case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
97 case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
98 case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
99 case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
100 case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
101 case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
102 case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
103 case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
104 case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
105 case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
106 case SNDRV_SEQ_IOCTL_QUERY_SUBS:
107 case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
108 case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
109 case SNDRV_SEQ_IOCTL_RUNNING_MODE:
110 return snd_seq_ioctl(file, cmd, arg);
111 case SNDRV_SEQ_IOCTL_CREATE_PORT32:
112 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, data32: argp);
113 case SNDRV_SEQ_IOCTL_DELETE_PORT32:
114 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, data32: argp);
115 case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
116 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, data32: argp);
117 case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
118 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, data32: argp);
119 case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
120 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, data32: argp);
121 }
122 return -ENOIOCTLCMD;
123}
124