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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * 32bit -> 64bit ioctl wrapper for sequencer API4 * 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(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 err = snd_seq_kernel_client_ctl(client->number, cmd, data);48 if (err < 0)49 return err;50 51 if (copy_to_user(data32, data, 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(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, argp);113 case SNDRV_SEQ_IOCTL_DELETE_PORT32:114 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);115 case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:116 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);117 case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:118 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);119 case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:120 return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);121 }122 return -ENOIOCTLCMD;123}124