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 | |
12 | struct 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 | |
31 | static 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(size: 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 | |
64 | enum { |
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 | |
72 | static 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 | |