[linux-2.6-block.git] / sound / core / timer_compat.c

/*
 *   32bit -> 64bit ioctl wrapper for timer API
 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

/* This file included from timer.c */

#include <linux/compat.h>

struct snd_timer_info32 {
	u32 flags;
	s32 card;
	unsigned char id[64];
	unsigned char name[80];
	u32 reserved0;
	u32 resolution;
	unsigned char reserved[64];
};

static int snd_timer_user_info_compat(struct file *file,
				      struct snd_timer_info32 __user *_info)
{
	struct snd_timer_user *tu;
	struct snd_timer_info32 info;
	struct snd_timer *t;

	tu = file->private_data;
	if (snd_BUG_ON(!tu->timeri))
		return -ENXIO;
	t = tu->timeri->timer;
	if (snd_BUG_ON(!t))
		return -ENXIO;
	memset(&info, 0, sizeof(info));
	info.card = t->card ? t->card->number : -1;
	if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
		info.flags |= SNDRV_TIMER_FLG_SLAVE;
	strlcpy(info.id, t->id, sizeof(info.id));
	strlcpy(info.name, t->name, sizeof(info.name));
	info.resolution = t->hw.resolution;
	if (copy_to_user(_info, &info, sizeof(*_info)))
		return -EFAULT;
	return 0;
}

struct snd_timer_status32 {
	struct compat_timespec tstamp;
	u32 resolution;
	u32 lost;
	u32 overrun;
	u32 queue;
	unsigned char reserved[64];
};

static int snd_timer_user_status_compat(struct file *file,
					struct snd_timer_status32 __user *_status)
{
	struct snd_timer_user *tu;
	struct snd_timer_status32 status;
	
	tu = file->private_data;
	if (snd_BUG_ON(!tu->timeri))
		return -ENXIO;
	memset(&status, 0, sizeof(status));
	status.tstamp.tv_sec = tu->tstamp.tv_sec;
	status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
	status.resolution = snd_timer_resolution(tu->timeri);
	status.lost = tu->timeri->lost;
	status.overrun = tu->overrun;
	spin_lock_irq(&tu->qlock);
	status.queue = tu->qused;
	spin_unlock_irq(&tu->qlock);
	if (copy_to_user(_status, &status, sizeof(status)))
		return -EFAULT;
	return 0;
}

#ifdef CONFIG_X86_X32
/* X32 ABI has the same struct as x86-64 */
#define snd_timer_user_status_x32(file, s) \
	snd_timer_user_status(file, s)
#endif /* CONFIG_X86_X32 */

/*
 */

enum {
	SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
	SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
#ifdef CONFIG_X86_X32
	SNDRV_TIMER_IOCTL_STATUS_X32 = _IOW('T', 0x14, struct snd_timer_status),
#endif /* CONFIG_X86_X32 */
};

static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
{
	void __user *argp = compat_ptr(arg);

	switch (cmd) {
	case SNDRV_TIMER_IOCTL_PVERSION:
	case SNDRV_TIMER_IOCTL_TREAD:
	case SNDRV_TIMER_IOCTL_GINFO:
	case SNDRV_TIMER_IOCTL_GPARAMS:
	case SNDRV_TIMER_IOCTL_GSTATUS:
	case SNDRV_TIMER_IOCTL_SELECT:
	case SNDRV_TIMER_IOCTL_PARAMS:
	case SNDRV_TIMER_IOCTL_START:
	case SNDRV_TIMER_IOCTL_START_OLD:
	case SNDRV_TIMER_IOCTL_STOP:
	case SNDRV_TIMER_IOCTL_STOP_OLD:
	case SNDRV_TIMER_IOCTL_CONTINUE:
	case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
	case SNDRV_TIMER_IOCTL_PAUSE:
	case SNDRV_TIMER_IOCTL_PAUSE_OLD:
	case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
		return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
	case SNDRV_TIMER_IOCTL_INFO32:
		return snd_timer_user_info_compat(file, argp);
	case SNDRV_TIMER_IOCTL_STATUS32:
		return snd_timer_user_status_compat(file, argp);
#ifdef CONFIG_X86_X32
	case SNDRV_TIMER_IOCTL_STATUS_X32:
		return snd_timer_user_status_x32(file, argp);
#endif /* CONFIG_X86_X32 */
	}
	return -ENOIOCTLCMD;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* 32bit -> 64bit ioctl wrapper for timer API
	3	* Copyright (c) by Takashi Iwai <tiwai@suse.de>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18	*
	19	*/
	20
	21	/* This file included from timer.c */
	22
	23	#include <linux/compat.h>
	24
53d2f744	25	struct snd_timer_info32 {
1da177e4 LT	26	u32 flags;
	27	s32 card;
	28	unsigned char id[64];
	29	unsigned char name[80];
	30	u32 reserved0;
	31	u32 resolution;
	32	unsigned char reserved[64];
	33	};
	34
	35	static int snd_timer_user_info_compat(struct file *file,
53d2f744	36	struct snd_timer_info32 __user *_info)
1da177e4	37	{
53d2f744 TI	38	struct snd_timer_user *tu;
	39	struct snd_timer_info32 info;
	40	struct snd_timer *t;
1da177e4 LT	41
1da177e4 LT	42	tu = file->private_data;
7eaa943c TI	43	if (snd_BUG_ON(!tu->timeri))
7eaa943c TI	44	return -ENXIO;
1da177e4	45	t = tu->timeri->timer;
7eaa943c TI	46	if (snd_BUG_ON(!t))
7eaa943c TI	47	return -ENXIO;
1da177e4 LT	48	memset(&info, 0, sizeof(info));
	49	info.card = t->card ? t->card->number : -1;
	50	if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
	51	info.flags \|= SNDRV_TIMER_FLG_SLAVE;
	52	strlcpy(info.id, t->id, sizeof(info.id));
	53	strlcpy(info.name, t->name, sizeof(info.name));
	54	info.resolution = t->hw.resolution;
	55	if (copy_to_user(_info, &info, sizeof(*_info)))
	56	return -EFAULT;
	57	return 0;
	58	}
	59
53d2f744	60	struct snd_timer_status32 {
1da177e4 LT	61	struct compat_timespec tstamp;
	62	u32 resolution;
	63	u32 lost;
	64	u32 overrun;
	65	u32 queue;
	66	unsigned char reserved[64];
	67	};
	68
	69	static int snd_timer_user_status_compat(struct file *file,
53d2f744	70	struct snd_timer_status32 __user *_status)
1da177e4	71	{
53d2f744	72	struct snd_timer_user *tu;
3a72494a	73	struct snd_timer_status32 status;
1da177e4 LT	74
1da177e4 LT	75	tu = file->private_data;
7eaa943c TI	76	if (snd_BUG_ON(!tu->timeri))
7eaa943c TI	77	return -ENXIO;
1da177e4	78	memset(&status, 0, sizeof(status));
3a72494a TI	79	status.tstamp.tv_sec = tu->tstamp.tv_sec;
3a72494a TI	80	status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
1da177e4 LT	81	status.resolution = snd_timer_resolution(tu->timeri);
	82	status.lost = tu->timeri->lost;
	83	status.overrun = tu->overrun;
	84	spin_lock_irq(&tu->qlock);
	85	status.queue = tu->qused;
	86	spin_unlock_irq(&tu->qlock);
	87	if (copy_to_user(_status, &status, sizeof(status)))
	88	return -EFAULT;
	89	return 0;
	90	}
	91
b24e7ad1 TI	92	#ifdef CONFIG_X86_X32
	93	/* X32 ABI has the same struct as x86-64 */
	94	#define snd_timer_user_status_x32(file, s) \
	95	snd_timer_user_status(file, s)
	96	#endif /* CONFIG_X86_X32 */
	97
1da177e4 LT	98	/*
	99	*/
	100
	101	enum {
53d2f744 TI	102	SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
53d2f744 TI	103	SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
b24e7ad1 TI	104	#ifdef CONFIG_X86_X32
	105	SNDRV_TIMER_IOCTL_STATUS_X32 = _IOW('T', 0x14, struct snd_timer_status),
	106	#endif /* CONFIG_X86_X32 */
1da177e4 LT	107	};
	108
	109	static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
	110	{
	111	void __user *argp = compat_ptr(arg);
	112
	113	switch (cmd) {
	114	case SNDRV_TIMER_IOCTL_PVERSION:
	115	case SNDRV_TIMER_IOCTL_TREAD:
	116	case SNDRV_TIMER_IOCTL_GINFO:
	117	case SNDRV_TIMER_IOCTL_GPARAMS:
	118	case SNDRV_TIMER_IOCTL_GSTATUS:
	119	case SNDRV_TIMER_IOCTL_SELECT:
	120	case SNDRV_TIMER_IOCTL_PARAMS:
	121	case SNDRV_TIMER_IOCTL_START:
8c50b37c	122	case SNDRV_TIMER_IOCTL_START_OLD:
1da177e4	123	case SNDRV_TIMER_IOCTL_STOP:
8c50b37c	124	case SNDRV_TIMER_IOCTL_STOP_OLD:
1da177e4	125	case SNDRV_TIMER_IOCTL_CONTINUE:
8c50b37c	126	case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
15790a6b	127	case SNDRV_TIMER_IOCTL_PAUSE:
8c50b37c	128	case SNDRV_TIMER_IOCTL_PAUSE_OLD:
1da177e4 LT	129	case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
	130	return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
	131	case SNDRV_TIMER_IOCTL_INFO32:
	132	return snd_timer_user_info_compat(file, argp);
	133	case SNDRV_TIMER_IOCTL_STATUS32:
	134	return snd_timer_user_status_compat(file, argp);
b24e7ad1 TI	135	#ifdef CONFIG_X86_X32
	136	case SNDRV_TIMER_IOCTL_STATUS_X32:
	137	return snd_timer_user_status_x32(file, argp);
	138	#endif /* CONFIG_X86_X32 */
1da177e4 LT	139	}
	140	return -ENOIOCTLCMD;
	141	}