mirror of https://gitee.com/openkylin/linux.git
123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* 32bit -> 64bit ioctl wrapper for sequencer API
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* Copyright (c) by Takashi Iwai <tiwai@suse.de>
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*/
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/* This file included from seq.c */
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#include <linux/compat.h>
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#include <linux/slab.h>
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struct snd_seq_port_info32 {
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struct snd_seq_addr addr; /* client/port numbers */
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char name[64]; /* port name */
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u32 capability; /* port capability bits */
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u32 type; /* port type bits */
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s32 midi_channels; /* channels per MIDI port */
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s32 midi_voices; /* voices per MIDI port */
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s32 synth_voices; /* voices per SYNTH port */
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s32 read_use; /* R/O: subscribers for output (from this port) */
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s32 write_use; /* R/O: subscribers for input (to this port) */
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u32 kernel; /* reserved for kernel use (must be NULL) */
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u32 flags; /* misc. conditioning */
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unsigned char time_queue; /* queue # for timestamping */
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char reserved[59]; /* for future use */
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};
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static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
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struct snd_seq_port_info32 __user *data32)
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{
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int err = -EFAULT;
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struct snd_seq_port_info *data;
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data = kmalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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if (copy_from_user(data, data32, sizeof(*data32)) ||
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get_user(data->flags, &data32->flags) ||
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get_user(data->time_queue, &data32->time_queue))
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goto error;
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data->kernel = NULL;
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err = snd_seq_kernel_client_ctl(client->number, cmd, data);
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if (err < 0)
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goto error;
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if (copy_to_user(data32, data, sizeof(*data32)) ||
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put_user(data->flags, &data32->flags) ||
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put_user(data->time_queue, &data32->time_queue))
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err = -EFAULT;
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error:
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kfree(data);
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return err;
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}
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/*
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*/
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enum {
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SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
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SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
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SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
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SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
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SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
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};
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static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
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{
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struct snd_seq_client *client = file->private_data;
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void __user *argp = compat_ptr(arg);
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if (snd_BUG_ON(!client))
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return -ENXIO;
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switch (cmd) {
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case SNDRV_SEQ_IOCTL_PVERSION:
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case SNDRV_SEQ_IOCTL_CLIENT_ID:
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case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
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case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
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case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
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case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
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case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
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case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
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case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
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case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
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case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
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case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
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case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
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case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
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case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
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case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
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case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
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case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
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case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
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case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
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case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
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case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
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case SNDRV_SEQ_IOCTL_QUERY_SUBS:
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case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
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case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
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case SNDRV_SEQ_IOCTL_RUNNING_MODE:
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return snd_seq_ioctl(file, cmd, arg);
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case SNDRV_SEQ_IOCTL_CREATE_PORT32:
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return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
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case SNDRV_SEQ_IOCTL_DELETE_PORT32:
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return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
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case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
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return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
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case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
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return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
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case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
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return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
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}
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return -ENOIOCTLCMD;
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}
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