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linux/sound/core/pcm_compat.c
Jeffery Miller 912e4c3320 ALSA: pcm: Return negative delays from SNDRV_PCM_IOCTL_DELAY. 
The commit c2c86a9717 ("ALSA: pcm: Remove set_fs() in PCM core code")
changed SNDRV_PCM_IOCTL_DELAY to return an inconsistent error instead of a
negative delay.  Originally the call would succeed and return the negative
delay.  The Chromium OS Audio Server (CRAS) gets confused and hangs when
the error is returned instead of the negative delay.

Help CRAS avoid the issue by rolling back the behavior to return a
negative delay instead of an error.

Fixes: c2c86a9717 ("ALSA: pcm: Remove set_fs() in PCM core code")
Signed-off-by: Jeffery Miller <jmiller@neverware.com>
Cc: <stable@vger.kernel.org> # v4.13+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-04-23 08:41:35 +02:00

737 lines
22 KiB
C
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/*
* 32bit -> 64bit ioctl wrapper for PCM 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 pcm_native.c */
#include <linux/compat.h>
#include <linux/slab.h>
static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
s32 __user *src)
{
snd_pcm_sframes_t delay;
int err;
err = snd_pcm_delay(substream, &delay);
if (err)
return err;
if (put_user(delay, src))
return -EFAULT;
return 0;
}
static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
u32 __user *src)
{
snd_pcm_uframes_t frames;
int err;
if (get_user(frames, src))
return -EFAULT;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
err = snd_pcm_playback_rewind(substream, frames);
else
err = snd_pcm_capture_rewind(substream, frames);
if (put_user(err, src))
return -EFAULT;
return err < 0 ? err : 0;
}
static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
u32 __user *src)
{
snd_pcm_uframes_t frames;
int err;
if (get_user(frames, src))
return -EFAULT;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
err = snd_pcm_playback_forward(substream, frames);
else
err = snd_pcm_capture_forward(substream, frames);
if (put_user(err, src))
return -EFAULT;
return err < 0 ? err : 0;
}
struct snd_pcm_hw_params32 {
u32 flags;
struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
struct snd_mask mres[5]; /* reserved masks */
struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
struct snd_interval ires[9]; /* reserved intervals */
u32 rmask;
u32 cmask;
u32 info;
u32 msbits;
u32 rate_num;
u32 rate_den;
u32 fifo_size;
unsigned char reserved[64];
};
struct snd_pcm_sw_params32 {
s32 tstamp_mode;
u32 period_step;
u32 sleep_min;
u32 avail_min;
u32 xfer_align;
u32 start_threshold;
u32 stop_threshold;
u32 silence_threshold;
u32 silence_size;
u32 boundary;
u32 proto;
u32 tstamp_type;
unsigned char reserved[56];
};
/* recalcuate the boundary within 32bit */
static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
{
snd_pcm_uframes_t boundary;
if (! runtime->buffer_size)
return 0;
boundary = runtime->buffer_size;
while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
boundary *= 2;
return boundary;
}
static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
struct snd_pcm_sw_params32 __user *src)
{
struct snd_pcm_sw_params params;
snd_pcm_uframes_t boundary;
int err;
memset(&params, 0, sizeof(params));
if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
get_user(params.period_step, &src->period_step) ||
get_user(params.sleep_min, &src->sleep_min) ||
get_user(params.avail_min, &src->avail_min) ||
get_user(params.xfer_align, &src->xfer_align) ||
get_user(params.start_threshold, &src->start_threshold) ||
get_user(params.stop_threshold, &src->stop_threshold) ||
get_user(params.silence_threshold, &src->silence_threshold) ||
get_user(params.silence_size, &src->silence_size) ||
get_user(params.tstamp_type, &src->tstamp_type) ||
get_user(params.proto, &src->proto))
return -EFAULT;
/*
* Check silent_size parameter. Since we have 64bit boundary,
* silence_size must be compared with the 32bit boundary.
*/
boundary = recalculate_boundary(substream->runtime);
if (boundary && params.silence_size >= boundary)
params.silence_size = substream->runtime->boundary;
err = snd_pcm_sw_params(substream, &params);
if (err < 0)
return err;
if (boundary && put_user(boundary, &src->boundary))
return -EFAULT;
return err;
}
struct snd_pcm_channel_info32 {
u32 channel;
u32 offset;
u32 first;
u32 step;
};
static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
struct snd_pcm_channel_info32 __user *src)
{
struct snd_pcm_channel_info info;
int err;
if (get_user(info.channel, &src->channel) ||
get_user(info.offset, &src->offset) ||
get_user(info.first, &src->first) ||
get_user(info.step, &src->step))
return -EFAULT;
err = snd_pcm_channel_info(substream, &info);
if (err < 0)
return err;
if (put_user(info.channel, &src->channel) ||
put_user(info.offset, &src->offset) ||
put_user(info.first, &src->first) ||
put_user(info.step, &src->step))
return -EFAULT;
return err;
}
#ifdef CONFIG_X86_X32
/* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
struct snd_pcm_channel_info __user *src);
#define snd_pcm_ioctl_channel_info_x32(s, p) \
snd_pcm_channel_info_user(s, p)
#endif /* CONFIG_X86_X32 */
struct snd_pcm_status32 {
s32 state;
struct compat_timespec trigger_tstamp;
struct compat_timespec tstamp;
u32 appl_ptr;
u32 hw_ptr;
s32 delay;
u32 avail;
u32 avail_max;
u32 overrange;
s32 suspended_state;
u32 audio_tstamp_data;
struct compat_timespec audio_tstamp;
struct compat_timespec driver_tstamp;
u32 audio_tstamp_accuracy;
unsigned char reserved[52-2*sizeof(struct compat_timespec)];
} __attribute__((packed));
static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
struct snd_pcm_status32 __user *src,
bool ext)
{
struct snd_pcm_status status;
int err;
memset(&status, 0, sizeof(status));
/*
* with extension, parameters are read/write,
* get audio_tstamp_data from user,
* ignore rest of status structure
*/
if (ext && get_user(status.audio_tstamp_data,
(u32 __user *)(&src->audio_tstamp_data)))
return -EFAULT;
err = snd_pcm_status(substream, &status);
if (err < 0)
return err;
if (clear_user(src, sizeof(*src)))
return -EFAULT;
if (put_user(status.state, &src->state) ||
compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
compat_put_timespec(&status.tstamp, &src->tstamp) ||
put_user(status.appl_ptr, &src->appl_ptr) ||
put_user(status.hw_ptr, &src->hw_ptr) ||
put_user(status.delay, &src->delay) ||
put_user(status.avail, &src->avail) ||
put_user(status.avail_max, &src->avail_max) ||
put_user(status.overrange, &src->overrange) ||
put_user(status.suspended_state, &src->suspended_state) ||
put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
return -EFAULT;
return err;
}
#ifdef CONFIG_X86_X32
/* X32 ABI has 64bit timespec and 64bit alignment */
struct snd_pcm_status_x32 {
s32 state;
u32 rsvd; /* alignment */
struct timespec trigger_tstamp;
struct timespec tstamp;
u32 appl_ptr;
u32 hw_ptr;
s32 delay;
u32 avail;
u32 avail_max;
u32 overrange;
s32 suspended_state;
u32 audio_tstamp_data;
struct timespec audio_tstamp;
struct timespec driver_tstamp;
u32 audio_tstamp_accuracy;
unsigned char reserved[52-2*sizeof(struct timespec)];
} __packed;
#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
struct snd_pcm_status_x32 __user *src,
bool ext)
{
struct snd_pcm_status status;
int err;
memset(&status, 0, sizeof(status));
/*
* with extension, parameters are read/write,
* get audio_tstamp_data from user,
* ignore rest of status structure
*/
if (ext && get_user(status.audio_tstamp_data,
(u32 __user *)(&src->audio_tstamp_data)))
return -EFAULT;
err = snd_pcm_status(substream, &status);
if (err < 0)
return err;
if (clear_user(src, sizeof(*src)))
return -EFAULT;
if (put_user(status.state, &src->state) ||
put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
put_timespec(&status.tstamp, &src->tstamp) ||
put_user(status.appl_ptr, &src->appl_ptr) ||
put_user(status.hw_ptr, &src->hw_ptr) ||
put_user(status.delay, &src->delay) ||
put_user(status.avail, &src->avail) ||
put_user(status.avail_max, &src->avail_max) ||
put_user(status.overrange, &src->overrange) ||
put_user(status.suspended_state, &src->suspended_state) ||
put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
return -EFAULT;
return err;
}
#endif /* CONFIG_X86_X32 */
/* both for HW_PARAMS and HW_REFINE */
static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
int refine,
struct snd_pcm_hw_params32 __user *data32)
{
struct snd_pcm_hw_params *data;
struct snd_pcm_runtime *runtime;
int err;
if (! (runtime = substream->runtime))
return -ENOTTY;
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
/* only fifo_size (RO from userspace) is different, so just copy all */
if (copy_from_user(data, data32, sizeof(*data32))) {
err = -EFAULT;
goto error;
}
if (refine)
err = snd_pcm_hw_refine(substream, data);
else
err = snd_pcm_hw_params(substream, data);
if (err < 0)
goto error;
if (copy_to_user(data32, data, sizeof(*data32)) ||
put_user(data->fifo_size, &data32->fifo_size)) {
err = -EFAULT;
goto error;
}
if (! refine) {
unsigned int new_boundary = recalculate_boundary(runtime);
if (new_boundary)
runtime->boundary = new_boundary;
}
error:
kfree(data);
return err;
}
/*
*/
struct snd_xferi32 {
s32 result;
u32 buf;
u32 frames;
};
static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
int dir, struct snd_xferi32 __user *data32)
{
compat_caddr_t buf;
u32 frames;
int err;
if (! substream->runtime)
return -ENOTTY;
if (substream->stream != dir)
return -EINVAL;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (get_user(buf, &data32->buf) ||
get_user(frames, &data32->frames))
return -EFAULT;
if (dir == SNDRV_PCM_STREAM_PLAYBACK)
err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
else
err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
if (err < 0)
return err;
/* copy the result */
if (put_user(err, &data32->result))
return -EFAULT;
return 0;
}
/* snd_xfern needs remapping of bufs */
struct snd_xfern32 {
s32 result;
u32 bufs; /* this is void **; */
u32 frames;
};
/*
* xfern ioctl nees to copy (up to) 128 pointers on stack.
* although we may pass the copied pointers through f_op->ioctl, but the ioctl
* handler there expands again the same 128 pointers on stack, so it is better
* to handle the function (calling pcm_readv/writev) directly in this handler.
*/
static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
int dir, struct snd_xfern32 __user *data32)
{
compat_caddr_t buf;
compat_caddr_t __user *bufptr;
u32 frames;
void __user **bufs;
int err, ch, i;
if (! substream->runtime)
return -ENOTTY;
if (substream->stream != dir)
return -EINVAL;
if ((ch = substream->runtime->channels) > 128)
return -EINVAL;
if (get_user(buf, &data32->bufs) ||
get_user(frames, &data32->frames))
return -EFAULT;
bufptr = compat_ptr(buf);
bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL);
if (bufs == NULL)
return -ENOMEM;
for (i = 0; i < ch; i++) {
u32 ptr;
if (get_user(ptr, bufptr)) {
kfree(bufs);
return -EFAULT;
}
bufs[i] = compat_ptr(ptr);
bufptr++;
}
if (dir == SNDRV_PCM_STREAM_PLAYBACK)
err = snd_pcm_lib_writev(substream, bufs, frames);
else
err = snd_pcm_lib_readv(substream, bufs, frames);
if (err >= 0) {
if (put_user(err, &data32->result))
err = -EFAULT;
}
kfree(bufs);
return err;
}
struct snd_pcm_mmap_status32 {
s32 state;
s32 pad1;
u32 hw_ptr;
struct compat_timespec tstamp;
s32 suspended_state;
struct compat_timespec audio_tstamp;
} __attribute__((packed));
struct snd_pcm_mmap_control32 {
u32 appl_ptr;
u32 avail_min;
};
struct snd_pcm_sync_ptr32 {
u32 flags;
union {
struct snd_pcm_mmap_status32 status;
unsigned char reserved[64];
} s;
union {
struct snd_pcm_mmap_control32 control;
unsigned char reserved[64];
} c;
} __attribute__((packed));
static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
struct snd_pcm_sync_ptr32 __user *src)
{
struct snd_pcm_runtime *runtime = substream->runtime;
volatile struct snd_pcm_mmap_status *status;
volatile struct snd_pcm_mmap_control *control;
u32 sflags;
struct snd_pcm_mmap_control scontrol;
struct snd_pcm_mmap_status sstatus;
snd_pcm_uframes_t boundary;
int err;
if (snd_BUG_ON(!runtime))
return -EINVAL;
if (get_user(sflags, &src->flags) ||
get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
get_user(scontrol.avail_min, &src->c.control.avail_min))
return -EFAULT;
if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
err = snd_pcm_hwsync(substream);
if (err < 0)
return err;
}
status = runtime->status;
control = runtime->control;
boundary = recalculate_boundary(runtime);
if (! boundary)
boundary = 0x7fffffff;
snd_pcm_stream_lock_irq(substream);
/* FIXME: we should consider the boundary for the sync from app */
if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
control->appl_ptr = scontrol.appl_ptr;
else
scontrol.appl_ptr = control->appl_ptr % boundary;
if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
control->avail_min = scontrol.avail_min;
else
scontrol.avail_min = control->avail_min;
sstatus.state = status->state;
sstatus.hw_ptr = status->hw_ptr % boundary;
sstatus.tstamp = status->tstamp;
sstatus.suspended_state = status->suspended_state;
sstatus.audio_tstamp = status->audio_tstamp;
snd_pcm_stream_unlock_irq(substream);
if (put_user(sstatus.state, &src->s.status.state) ||
put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
compat_put_timespec(&sstatus.audio_tstamp,
&src->s.status.audio_tstamp) ||
put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
put_user(scontrol.avail_min, &src->c.control.avail_min))
return -EFAULT;
return 0;
}
#ifdef CONFIG_X86_X32
/* X32 ABI has 64bit timespec and 64bit alignment */
struct snd_pcm_mmap_status_x32 {
s32 state;
s32 pad1;
u32 hw_ptr;
u32 pad2; /* alignment */
struct timespec tstamp;
s32 suspended_state;
s32 pad3;
struct timespec audio_tstamp;
} __packed;
struct snd_pcm_mmap_control_x32 {
u32 appl_ptr;
u32 avail_min;
};
struct snd_pcm_sync_ptr_x32 {
u32 flags;
u32 rsvd; /* alignment */
union {
struct snd_pcm_mmap_status_x32 status;
unsigned char reserved[64];
} s;
union {
struct snd_pcm_mmap_control_x32 control;
unsigned char reserved[64];
} c;
} __packed;
static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
struct snd_pcm_sync_ptr_x32 __user *src)
{
struct snd_pcm_runtime *runtime = substream->runtime;
volatile struct snd_pcm_mmap_status *status;
volatile struct snd_pcm_mmap_control *control;
u32 sflags;
struct snd_pcm_mmap_control scontrol;
struct snd_pcm_mmap_status sstatus;
snd_pcm_uframes_t boundary;
int err;
if (snd_BUG_ON(!runtime))
return -EINVAL;
if (get_user(sflags, &src->flags) ||
get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
get_user(scontrol.avail_min, &src->c.control.avail_min))
return -EFAULT;
if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
err = snd_pcm_hwsync(substream);
if (err < 0)
return err;
}
status = runtime->status;
control = runtime->control;
boundary = recalculate_boundary(runtime);
if (!boundary)
boundary = 0x7fffffff;
snd_pcm_stream_lock_irq(substream);
/* FIXME: we should consider the boundary for the sync from app */
if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
control->appl_ptr = scontrol.appl_ptr;
else
scontrol.appl_ptr = control->appl_ptr % boundary;
if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
control->avail_min = scontrol.avail_min;
else
scontrol.avail_min = control->avail_min;
sstatus.state = status->state;
sstatus.hw_ptr = status->hw_ptr % boundary;
sstatus.tstamp = status->tstamp;
sstatus.suspended_state = status->suspended_state;
sstatus.audio_tstamp = status->audio_tstamp;
snd_pcm_stream_unlock_irq(substream);
if (put_user(sstatus.state, &src->s.status.state) ||
put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
put_user(scontrol.avail_min, &src->c.control.avail_min))
return -EFAULT;
return 0;
}
#endif /* CONFIG_X86_X32 */
/*
*/
enum {
SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
#ifdef CONFIG_X86_X32
SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
#endif /* CONFIG_X86_X32 */
};
static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
{
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream;
void __user *argp = compat_ptr(arg);
pcm_file = file->private_data;
if (! pcm_file)
return -ENOTTY;
substream = pcm_file->substream;
if (! substream)
return -ENOTTY;
/*
* When PCM is used on 32bit mode, we need to disable
* mmap of PCM status/control records because of the size
* incompatibility.
*/
pcm_file->no_compat_mmap = 1;
switch (cmd) {
case SNDRV_PCM_IOCTL_PVERSION:
case SNDRV_PCM_IOCTL_INFO:
case SNDRV_PCM_IOCTL_TSTAMP:
case SNDRV_PCM_IOCTL_TTSTAMP:
case SNDRV_PCM_IOCTL_USER_PVERSION:
case SNDRV_PCM_IOCTL_HWSYNC:
case SNDRV_PCM_IOCTL_PREPARE:
case SNDRV_PCM_IOCTL_RESET:
case SNDRV_PCM_IOCTL_START:
case SNDRV_PCM_IOCTL_DROP:
case SNDRV_PCM_IOCTL_DRAIN:
case SNDRV_PCM_IOCTL_PAUSE:
case SNDRV_PCM_IOCTL_HW_FREE:
case SNDRV_PCM_IOCTL_RESUME:
case SNDRV_PCM_IOCTL_XRUN:
case SNDRV_PCM_IOCTL_LINK:
case SNDRV_PCM_IOCTL_UNLINK:
return snd_pcm_common_ioctl(file, substream, cmd, argp);
case SNDRV_PCM_IOCTL_HW_REFINE32:
return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
case SNDRV_PCM_IOCTL_HW_PARAMS32:
return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
case SNDRV_PCM_IOCTL_SW_PARAMS32:
return snd_pcm_ioctl_sw_params_compat(substream, argp);
case SNDRV_PCM_IOCTL_STATUS32:
return snd_pcm_status_user_compat(substream, argp, false);
case SNDRV_PCM_IOCTL_STATUS_EXT32:
return snd_pcm_status_user_compat(substream, argp, true);
case SNDRV_PCM_IOCTL_SYNC_PTR32:
return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
return snd_pcm_ioctl_channel_info_compat(substream, argp);
case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
case SNDRV_PCM_IOCTL_READI_FRAMES32:
return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
case SNDRV_PCM_IOCTL_READN_FRAMES32:
return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
case SNDRV_PCM_IOCTL_DELAY32:
return snd_pcm_ioctl_delay_compat(substream, argp);
case SNDRV_PCM_IOCTL_REWIND32:
return snd_pcm_ioctl_rewind_compat(substream, argp);
case SNDRV_PCM_IOCTL_FORWARD32:
return snd_pcm_ioctl_forward_compat(substream, argp);
#ifdef CONFIG_X86_X32
case SNDRV_PCM_IOCTL_STATUS_X32:
return snd_pcm_status_user_x32(substream, argp, false);
case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
return snd_pcm_status_user_x32(substream, argp, true);
case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
return snd_pcm_ioctl_channel_info_x32(substream, argp);
#endif /* CONFIG_X86_X32 */
}
return -ENOIOCTLCMD;
}
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