[linux-2.6-block.git] / sound / core / seq / seq_compat.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)
{
	int err = -EFAULT;
	struct snd_seq_port_info *data;

	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))
		goto error;
	data->kernel = NULL;

	err = snd_seq_kernel_client_ctl(client->number, cmd, data);
	if (err < 0)
		goto error;

	if (copy_to_user(data32, data, sizeof(*data32)) ||
	    put_user(data->flags, &data32->flags) ||
	    put_user(data->time_queue, &data32->time_queue))
		err = -EFAULT;

 error:
	kfree(data);
	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_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_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;
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* 32bit -> 64bit ioctl wrapper for sequencer API
	4	* Copyright (c) by Takashi Iwai <tiwai@suse.de>
1da177e4 LT	5	*/
	6
	7	/* This file included from seq.c */
	8
	9	#include <linux/compat.h>
5a0e3ad6	10	#include <linux/slab.h>
1da177e4	11
c7e0b5bf TI	12	struct snd_seq_port_info32 {
c7e0b5bf TI	13	struct snd_seq_addr addr; /* client/port numbers */
1da177e4 LT	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
c7e0b5bf TI	31	static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
c7e0b5bf TI	32	struct snd_seq_port_info32 __user *data32)
1da177e4 LT	33	{
1da177e4 LT	34	int err = -EFAULT;
c7e0b5bf	35	struct snd_seq_port_info *data;
1da177e4	36
9586495d NB	37	data = kmalloc(sizeof(*data), GFP_KERNEL);
	38	if (!data)
	39	return -ENOMEM;
1da177e4	40
9586495d NB	41	if (copy_from_user(data, data32, sizeof(*data32)) \|\|
9586495d NB	42	get_user(data->flags, &data32->flags) \|\|
1da177e4 LT	43	get_user(data->time_queue, &data32->time_queue))
	44	goto error;
	45	data->kernel = NULL;
	46
30c07022	47	err = snd_seq_kernel_client_ctl(client->number, cmd, data);
1da177e4 LT	48	if (err < 0)
	49	goto error;
	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	err = -EFAULT;
	55
	56	error:
	57	kfree(data);
	58	return err;
	59	}
	60
	61
	62
	63	/*
	64	*/
	65
	66	enum {
c7e0b5bf TI	67	SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
	68	SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
	69	SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
	70	SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
	71	SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
1da177e4 LT	72	};
	73
	74	static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
	75	{
c7e0b5bf	76	struct snd_seq_client *client = file->private_data;
1da177e4 LT	77	void __user *argp = compat_ptr(arg);
1da177e4 LT	78
7eaa943c TI	79	if (snd_BUG_ON(!client))
7eaa943c TI	80	return -ENXIO;
1da177e4 LT	81
	82	switch (cmd) {
	83	case SNDRV_SEQ_IOCTL_PVERSION:
	84	case SNDRV_SEQ_IOCTL_CLIENT_ID:
	85	case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
	86	case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
	87	case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
	88	case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
	89	case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
	90	case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
	91	case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
	92	case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
	93	case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
	94	case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
	95	case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
	96	case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
	97	case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
	98	case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
	99	case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
	100	case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
	101	case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
	102	case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
	103	case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
	104	case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
	105	case SNDRV_SEQ_IOCTL_QUERY_SUBS:
	106	case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
	107	case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
	108	case SNDRV_SEQ_IOCTL_RUNNING_MODE:
e12ec251	109	return snd_seq_ioctl(file, cmd, arg);
1da177e4 LT	110	case SNDRV_SEQ_IOCTL_CREATE_PORT32:
	111	return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
	112	case SNDRV_SEQ_IOCTL_DELETE_PORT32:
	113	return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
	114	case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
	115	return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
	116	case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
	117	return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
	118	case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
	119	return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
	120	}
	121	return -ENOIOCTLCMD;
	122	}