// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   32bit -> 64bit ioctl wrapper for PCM API
 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
 */

/* 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;
        err = snd_pcm_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;
        err = snd_pcm_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];
};

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_ABI
/* 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_ABI */

struct compat_snd_pcm_status64 {
        snd_pcm_state_t state;
        u8 rsvd[4]; /* alignment */
        s64 trigger_tstamp_sec;
        s64 trigger_tstamp_nsec;
        s64 tstamp_sec;
        s64 tstamp_nsec;
        u32 appl_ptr;
        u32 hw_ptr;
        s32 delay;
        u32 avail;
        u32 avail_max;
        u32 overrange;
        snd_pcm_state_t suspended_state;
        u32 audio_tstamp_data;
        s64 audio_tstamp_sec;
        s64 audio_tstamp_nsec;
        s64 driver_tstamp_sec;
        s64 driver_tstamp_nsec;
        u32 audio_tstamp_accuracy;
        unsigned char reserved[52-4*sizeof(s64)];
} __packed;

static int snd_pcm_status_user_compat64(struct snd_pcm_substream *substream,
                                        struct compat_snd_pcm_status64 __user *src,
                                        bool ext)
{
        struct snd_pcm_status64 status;
        struct compat_snd_pcm_status64 compat_status64;
        int err;

        memset(&status, 0, sizeof(status));
        memset(&compat_status64, 0, sizeof(compat_status64));
        /*
         * 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_status64(substream, &status);
        if (err < 0)
                return err;

        if (clear_user(src, sizeof(*src)))
                return -EFAULT;

        compat_status64 = (struct compat_snd_pcm_status64) {
                .state = status.state,
                .trigger_tstamp_sec = status.trigger_tstamp_sec,
                .trigger_tstamp_nsec = status.trigger_tstamp_nsec,
                .tstamp_sec = status.tstamp_sec,
                .tstamp_nsec = status.tstamp_nsec,
                .appl_ptr = status.appl_ptr,
                .hw_ptr = status.hw_ptr,
                .delay = status.delay,
                .avail = status.avail,
                .avail_max = status.avail_max,
                .overrange = status.overrange,
                .suspended_state = status.suspended_state,
                .audio_tstamp_data = status.audio_tstamp_data,
                .audio_tstamp_sec = status.audio_tstamp_sec,
                .audio_tstamp_nsec = status.audio_tstamp_nsec,
                .driver_tstamp_sec = status.audio_tstamp_sec,
                .driver_tstamp_nsec = status.audio_tstamp_nsec,
                .audio_tstamp_accuracy = status.audio_tstamp_accuracy,
        };

        if (copy_to_user(src, &compat_status64, sizeof(compat_status64)))
                return -EFAULT;

        return err;
}

/* 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_runtime *runtime;
        int err;

        runtime = substream->runtime;
        if (!runtime)
                return -ENOTTY;

        struct snd_pcm_hw_params *data __free(kfree) =
                kmalloc_obj(*data);
        if (!data)
                return -ENOMEM;

        /* only fifo_size (RO from userspace) is different, so just copy all */
        if (copy_from_user(data, data32, sizeof(*data32)))
                return -EFAULT;

        if (refine) {
                err = snd_pcm_hw_refine(substream, data);
                if (err < 0)
                        return err;
                err = fixup_unreferenced_params(substream, data);
        } else {
                err = snd_pcm_hw_params(substream, data);
        }
        if (err < 0)
                return err;
        if (copy_to_user(data32, data, sizeof(*data32)) ||
            put_user(data->fifo_size, &data32->fifo_size))
                return -EFAULT;

        if (! refine) {
                unsigned int new_boundary = recalculate_boundary(runtime);
                if (new_boundary)
                        runtime->boundary = new_boundary;
        }
        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->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;
        int err, ch, i;

        if (! substream->runtime)
                return -ENOTTY;
        if (substream->stream != dir)
                return -EINVAL;
        if (substream->runtime->state == SNDRV_PCM_STATE_OPEN)
                return -EBADFD;

        ch = substream->runtime->channels;
        if (ch > 128)
                return -EINVAL;
        if (get_user(buf, &data32->bufs) ||
            get_user(frames, &data32->frames))
                return -EFAULT;
        bufptr = compat_ptr(buf);

        void __user **bufs __free(kfree) =
                kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL);
        if (bufs == NULL)
                return -ENOMEM;
        for (i = 0; i < ch; i++) {
                u32 ptr;
                if (get_user(ptr, bufptr))
                        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))
                        return -EFAULT;
        }
        return err;
}

#ifdef CONFIG_X86_X32_ABI
/* X32 ABI has 64bit timespec and 64bit alignment */
struct snd_pcm_mmap_status_x32 {
        snd_pcm_state_t state;
        s32 pad1;
        u32 hw_ptr;
        u32 pad2; /* alignment */
        struct __snd_timespec64 tstamp;
        snd_pcm_state_t suspended_state;
        s32 pad3;
        struct __snd_timespec64 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 (snd_pcm_sync_ptr_get_user(sflags, scontrol, src))
                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;
        scoped_guard(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;
        }
        if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
                snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
        if (snd_pcm_sync_ptr_put_user(sstatus, scontrol, src))
                return -EFAULT;

        return 0;
}
#endif /* CONFIG_X86_X32_ABI */

#ifdef __BIG_ENDIAN
typedef char __pad_before_u32[4];
typedef char __pad_after_u32[0];
#else
typedef char __pad_before_u32[0];
typedef char __pad_after_u32[4];
#endif

/* PCM 2.0.15 API definition had a bug in mmap control; it puts the avail_min
 * at the wrong offset due to a typo in padding type.
 * The bug hits only 32bit.
 * A workaround for incorrect read/write is needed only in 32bit compat mode.
 */
struct __snd_pcm_mmap_control64_buggy {
        __pad_before_u32 __pad1;
        __u32 appl_ptr;
        __pad_before_u32 __pad2;        /* SiC! here is the bug */
        __pad_before_u32 __pad3;
        __u32 avail_min;
        __pad_after_uframe __pad4;
};

static int snd_pcm_ioctl_sync_ptr_buggy(struct snd_pcm_substream *substream,
                                        struct snd_pcm_sync_ptr __user *_sync_ptr)
{
        struct snd_pcm_runtime *runtime = substream->runtime;
        struct snd_pcm_sync_ptr sync_ptr;
        struct __snd_pcm_mmap_control64_buggy *sync_cp;
        volatile struct snd_pcm_mmap_status *status;
        volatile struct snd_pcm_mmap_control *control;
        int err;

        memset(&sync_ptr, 0, sizeof(sync_ptr));
        sync_cp = (struct __snd_pcm_mmap_control64_buggy *)&sync_ptr.c.control;
        if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags)))
                return -EFAULT;
        if (copy_from_user(sync_cp, &(_sync_ptr->c.control), sizeof(*sync_cp)))
                return -EFAULT;
        status = runtime->status;
        control = runtime->control;
        if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
                err = snd_pcm_hwsync(substream);
                if (err < 0)
                        return err;
        }
        scoped_guard(pcm_stream_lock_irq, substream) {
                if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) {
                        err = pcm_lib_apply_appl_ptr(substream, sync_cp->appl_ptr);
                        if (err < 0)
                                return err;
                } else {
                        sync_cp->appl_ptr = control->appl_ptr;
                }
                if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
                        control->avail_min = sync_cp->avail_min;
                else
                        sync_cp->avail_min = control->avail_min;
                sync_ptr.s.status.state = status->state;
                sync_ptr.s.status.hw_ptr = status->hw_ptr;
                sync_ptr.s.status.tstamp = status->tstamp;
                sync_ptr.s.status.suspended_state = status->suspended_state;
                sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
        }
        if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL))
                snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
        if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
                return -EFAULT;
        return 0;
}

/*
 */
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_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32),
        SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _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_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64),
        SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64),
#ifdef CONFIG_X86_X32_ABI
        SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
        SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
#endif /* CONFIG_X86_X32_ABI */
};

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 the old 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:
        case __SNDRV_PCM_IOCTL_SYNC_PTR32:
                return snd_pcm_common_ioctl(file, substream, cmd, argp);
        case __SNDRV_PCM_IOCTL_SYNC_PTR64:
#ifdef CONFIG_X86_X32_ABI
                if (in_x32_syscall())
                        return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
#endif /* CONFIG_X86_X32_ABI */
                return snd_pcm_ioctl_sync_ptr_buggy(substream, 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_STATUS_COMPAT32:
                return snd_pcm_status_user32(substream, argp, false);
        case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32:
                return snd_pcm_status_user32(substream, argp, true);
        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);
        case SNDRV_PCM_IOCTL_STATUS_COMPAT64:
                return snd_pcm_status_user_compat64(substream, argp, false);
        case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64:
                return snd_pcm_status_user_compat64(substream, argp, true);
#ifdef CONFIG_X86_X32_ABI
        case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
                return snd_pcm_ioctl_channel_info_x32(substream, argp);
#endif /* CONFIG_X86_X32_ABI */
        }

        return -ENOIOCTLCMD;
}