mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
edbcf872c1
There are common patterns where a temporary buffer is allocated and freed at the exit, and those can be simplified with the recent cleanup mechanism via __free(kfree). No functional changes, only code refactoring. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20240222111509.28390-10-tiwai@suse.de
124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* 32bit -> 64bit ioctl wrapper for sequencer API
|
|
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
|
|
*/
|
|
|
|
/* This file included from seq.c */
|
|
|
|
#include <linux/compat.h>
|
|
#include <linux/slab.h>
|
|
|
|
struct snd_seq_port_info32 {
|
|
struct snd_seq_addr addr; /* client/port numbers */
|
|
char name[64]; /* port name */
|
|
|
|
u32 capability; /* port capability bits */
|
|
u32 type; /* port type bits */
|
|
s32 midi_channels; /* channels per MIDI port */
|
|
s32 midi_voices; /* voices per MIDI port */
|
|
s32 synth_voices; /* voices per SYNTH port */
|
|
|
|
s32 read_use; /* R/O: subscribers for output (from this port) */
|
|
s32 write_use; /* R/O: subscribers for input (to this port) */
|
|
|
|
u32 kernel; /* reserved for kernel use (must be NULL) */
|
|
u32 flags; /* misc. conditioning */
|
|
unsigned char time_queue; /* queue # for timestamping */
|
|
char reserved[59]; /* for future use */
|
|
};
|
|
|
|
static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
|
|
struct snd_seq_port_info32 __user *data32)
|
|
{
|
|
struct snd_seq_port_info *data __free(kfree) = NULL;
|
|
int err;
|
|
|
|
data = kmalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(data, data32, sizeof(*data32)) ||
|
|
get_user(data->flags, &data32->flags) ||
|
|
get_user(data->time_queue, &data32->time_queue))
|
|
return -EFAULT;
|
|
data->kernel = NULL;
|
|
|
|
err = snd_seq_kernel_client_ctl(client->number, cmd, data);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (copy_to_user(data32, data, sizeof(*data32)) ||
|
|
put_user(data->flags, &data32->flags) ||
|
|
put_user(data->time_queue, &data32->time_queue))
|
|
return -EFAULT;
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
*/
|
|
|
|
enum {
|
|
SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
|
|
SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
|
|
SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
|
|
SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
|
|
SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
|
|
};
|
|
|
|
static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct snd_seq_client *client = file->private_data;
|
|
void __user *argp = compat_ptr(arg);
|
|
|
|
if (snd_BUG_ON(!client))
|
|
return -ENXIO;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_SEQ_IOCTL_PVERSION:
|
|
case SNDRV_SEQ_IOCTL_USER_PVERSION:
|
|
case SNDRV_SEQ_IOCTL_CLIENT_ID:
|
|
case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
|
|
case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
|
|
case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
|
|
case SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO:
|
|
case SNDRV_SEQ_IOCTL_SET_CLIENT_UMP_INFO:
|
|
case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
|
|
case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
|
|
case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
|
|
case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
|
|
case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
|
|
case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
|
|
case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
|
|
case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
|
|
case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
|
|
case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
|
|
case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
|
|
case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
|
|
case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
|
|
case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
|
|
case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
|
|
case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
|
|
case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
|
|
case SNDRV_SEQ_IOCTL_QUERY_SUBS:
|
|
case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
|
|
case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
|
|
case SNDRV_SEQ_IOCTL_RUNNING_MODE:
|
|
return snd_seq_ioctl(file, cmd, arg);
|
|
case SNDRV_SEQ_IOCTL_CREATE_PORT32:
|
|
return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
|
|
case SNDRV_SEQ_IOCTL_DELETE_PORT32:
|
|
return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
|
|
case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
|
|
return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
|
|
case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
|
|
return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
|
|
case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
|
|
return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
|
|
}
|
|
return -ENOIOCTLCMD;
|
|
}
|