fidl_fuchsia_hardware_block_driver/

fidl_fuchsia_hardware_block_driver.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::client::QueryResponseFut;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use fidl::endpoints::{ControlHandle as _, Responder as _};
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

pub type Vmoid = u16;

pub const BLOCK_GUID_LEN: u32 = 16;

pub const BLOCK_VMOID_INVALID: u16 = 0;

/// Multiple block I/O operations may be sent at once before a response is
/// actually sent back. Block I/O ops may be sent concurrently to different
/// vmoids, and they also may be sent to different groups at any point in time.
///
/// `MAX_TXN_GROUP_COUNT` "groups" are pre-allocated lanes separated on the
/// block server.  Using a group allows multiple message to be buffered at once
/// on a single communication channel before receiving a response.
///
/// Usage of groups is identified by the `GROUP_ITEM` flag, and is optional.
///
/// These groups may be referred to with a "groupid", in the range [0,
/// `MAX_TXN_GROUP_COUNT`).
///
/// The protocol to communicate with a single group is as follows:
/// 1) SEND [N - 1] messages with an allocated groupid for any value of 1 <= N.
///    The `GROUP_ITEM` flag is set for these messages.
/// 2) SEND a final Nth message with the same groupid. The `GROUP_ITEM
///    | GROUP_LAST` flags are set for this message.
/// 3) RECEIVE a single response from the Block I/O server after all N requests
///    have completed. This response is sent once all operations either complete
///    or a single operation fails. At this point, step (1) may begin again for
///    the same groupid.
///
/// For `READ` and `WRITE`, N may be greater than 1. Otherwise,
/// N == 1 (skipping step (1) in the protocol above).
///
/// Notes:
/// - groupids may operate on any number of vmoids at once.
/// - If additional requests are sent on the same groupid before step (3) has
///   completed, then the additional request will not be processed. If
///   `GROUP_LAST` is set, an error will be returned. Otherwise, the
///   request will be silently dropped.
/// - Messages within a group are not guaranteed to be processed in any order
///   relative to each other.
/// - All requests receive responses, except for ones with `GROUP_ITEM`
///   that do not have `GROUP_LAST` set.
///
/// For example, the following is a valid sequence of transactions:
///
///   -> (groupid = 1, vmoid = 1, OP = Write | GroupItem,             reqid = 1)
///   -> (groupid = 1, vmoid = 2, OP = Write | GroupItem,             reqid = 2)
///   -> (groupid = 2, vmoid = 3, OP = Write | GroupItem | GroupLast, reqid = 0)
///   <- Response sent to groupid = 2, reqid = 0
///   -> (groupid = 1, vmoid = 1, OP = Read | GroupItem | GroupLast,  reqid = 3)
///   <- Response sent to groupid = 1, reqid = 3
///   -> (groupid = 3, vmoid = 1, OP = Write | GroupItem,             reqid = 4)
///   -> (groupid = don't care, vmoid = 1, OP = Read, reqid = 5)
///   <- Response sent to reqid = 5
///   -> (groupid = 3, vmoid = 1, OP = Read | GroupItem | GroupLast,  reqid = 6)
///   <- Response sent to groupid = 3, reqid = 6
///
/// Each transaction reads or writes up to `length` blocks from the device,
/// starting at `dev_offset` blocks, into the VMO associated with `vmoid`,
/// starting at `vmo_offset` blocks.  If the transaction is out of range, for
/// example if `length` is too large or if `dev_offset` is beyond the end of the
/// device, `ZX_ERR_OUT_OF_RANGE` is returned.
pub const MAX_TXN_GROUP_COUNT: u32 = 8;

bitflags! {
    #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
    pub struct BlockIoFlag: u32 {
        /// Associate the following request with `group`.
        const GROUP_ITEM = 1;
        /// Only respond after this request (and all previous within group) have
        /// completed. Only valid with `GROUP_ITEM`.
        const GROUP_LAST = 2;
        /// Mark this operation as "Force Unit Access" (FUA), indicating that
        /// it should not complete until the data is written to the non-volatile
        /// medium (write), and that reads should bypass any on-device caches.
        const FORCE_ACCESS = 4;
    }
}

impl BlockIoFlag {
    #[deprecated = "Strict bits should not use `has_unknown_bits`"]
    #[inline(always)]
    pub fn has_unknown_bits(&self) -> bool {
        false
    }

    #[deprecated = "Strict bits should not use `get_unknown_bits`"]
    #[inline(always)]
    pub fn get_unknown_bits(&self) -> u32 {
        0
    }
}

#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u8)]
pub enum BlockOpcode {
    /// Performs a regular data read or write from the device. The operation may
    /// be cached internally.
    Read = 1,
    Write = 2,
    /// Write any controller or device cached data to nonvolatile storage.
    Flush = 3,
    /// Instructs the device to invalidate a number of blocks, making them  usable
    /// for storing something else. This is basically a "delete" optimization,
    /// where the device is in charge of discarding the old content without
    /// clients having to write a given pattern. The operation may be cached
    /// internally.
    Trim = 4,
    /// Detaches the VMO from the block device.
    CloseVmo = 5,
}

impl BlockOpcode {
    #[inline]
    pub fn from_primitive(prim: u8) -> Option<Self> {
        match prim {
            1 => Some(Self::Read),
            2 => Some(Self::Write),
            3 => Some(Self::Flush),
            4 => Some(Self::Trim),
            5 => Some(Self::CloseVmo),
            _ => None,
        }
    }

    #[inline]
    pub const fn into_primitive(self) -> u8 {
        self as u8
    }

    #[deprecated = "Strict enums should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct BlockCommand {
    pub opcode: BlockOpcode,
    pub flags: BlockIoFlag,
}

impl fidl::Persistable for BlockCommand {}

/// `READ`, `WRITE`
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct BlockReadWrite {
    /// Opcode and flags.
    pub command: BlockCommand,
    /// Available for temporary use.
    pub extra: u32,
    /// VMO of data to read or write.
    pub vmo: fidl::Vmo,
    /// Transfer length in blocks (0 is invalid).
    pub length: u32,
    /// Device offset in blocks.
    pub offset_dev: u64,
    /// VMO offset in blocks.
    pub offset_vmo: u64,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for BlockReadWrite {}

/// `TRIM`
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct BlockTrim {
    /// Opcode and flags.
    pub command: BlockCommand,
    /// Transfer length in blocks (0 is invalid).
    pub length: u32,
    /// Device offset in blocks.
    pub offset_dev: u64,
}

impl fidl::Persistable for BlockTrim {}

#[derive(Clone, Debug, PartialEq)]
pub struct CommonQueryResponse {
    pub info: fidl_fuchsia_hardware_block::BlockInfo,
    pub block_op_size: u64,
}

impl fidl::Persistable for CommonQueryResponse {}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct CommonQueueRequest {
    pub txn: BlockOp,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for CommonQueueRequest {}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct CommonQueueResponse {
    pub status: i32,
    pub op: BlockOp,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for CommonQueueResponse {}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum BlockOp {
    /// All Commands
    Command(BlockCommand),
    /// Read and Write ops use rw for parameters.
    Rw(BlockReadWrite),
    Trim(BlockTrim),
}

impl BlockOp {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Command(_) => 1,
            Self::Rw(_) => 2,
            Self::Trim(_) => 3,
        }
    }

    #[deprecated = "Strict unions should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for BlockOp {}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct CommonMarker;

impl fidl::endpoints::ProtocolMarker for CommonMarker {
    type Proxy = CommonProxy;
    type RequestStream = CommonRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = CommonSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) Common";
}

pub trait CommonProxyInterface: Send + Sync {
    type QueryResponseFut: std::future::Future<
            Output = Result<(fidl_fuchsia_hardware_block::BlockInfo, u64), fidl::Error>,
        > + Send;
    fn r#query(&self) -> Self::QueryResponseFut;
    type QueueResponseFut: std::future::Future<Output = Result<(i32, BlockOp), fidl::Error>> + Send;
    fn r#queue(&self, txn: BlockOp) -> Self::QueueResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct CommonSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for CommonSynchronousProxy {
    type Proxy = CommonProxy;
    type Protocol = CommonMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl CommonSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <CommonMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<CommonEvent, fidl::Error> {
        CommonEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Obtains the parameters of the block device (`block_info_t`) and the
    /// required size of `block_txn_t`. The `block_txn_t`s submitted via
    /// `Queue()` must have `block_op_size_out - sizeof(block_op_t)` bytes
    /// available at the end of the structure for the use of the driver.
    pub fn r#query(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<(fidl_fuchsia_hardware_block::BlockInfo, u64), fidl::Error> {
        let _response =
            self.client.send_query::<fidl::encoding::EmptyPayload, CommonQueryResponse>(
                (),
                0x1551192b715c20b0,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok((_response.info, _response.block_op_size))
    }

    /// Submits an I/O request for processing. Ownership of `op` is transferred
    /// to callee until `completion_cb` is invoked. Success or failure will be
    /// reported via the `completion_cb`. This callback may be called before the
    /// `Queue()` method returns.
    pub fn r#queue(
        &self,
        mut txn: BlockOp,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<(i32, BlockOp), fidl::Error> {
        let _response = self.client.send_query::<CommonQueueRequest, CommonQueueResponse>(
            (&mut txn,),
            0x4d57f58df2b01c6a,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok((_response.status, _response.op))
    }
}

#[derive(Debug, Clone)]
pub struct CommonProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for CommonProxy {
    type Protocol = CommonMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl CommonProxy {
    /// Create a new Proxy for fuchsia.hardware.block.driver/Common.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <CommonMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> CommonEventStream {
        CommonEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Obtains the parameters of the block device (`block_info_t`) and the
    /// required size of `block_txn_t`. The `block_txn_t`s submitted via
    /// `Queue()` must have `block_op_size_out - sizeof(block_op_t)` bytes
    /// available at the end of the structure for the use of the driver.
    pub fn r#query(
        &self,
    ) -> fidl::client::QueryResponseFut<
        (fidl_fuchsia_hardware_block::BlockInfo, u64),
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        CommonProxyInterface::r#query(self)
    }

    /// Submits an I/O request for processing. Ownership of `op` is transferred
    /// to callee until `completion_cb` is invoked. Success or failure will be
    /// reported via the `completion_cb`. This callback may be called before the
    /// `Queue()` method returns.
    pub fn r#queue(
        &self,
        mut txn: BlockOp,
    ) -> fidl::client::QueryResponseFut<(i32, BlockOp), fidl::encoding::DefaultFuchsiaResourceDialect>
    {
        CommonProxyInterface::r#queue(self, txn)
    }
}

impl CommonProxyInterface for CommonProxy {
    type QueryResponseFut = fidl::client::QueryResponseFut<
        (fidl_fuchsia_hardware_block::BlockInfo, u64),
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#query(&self) -> Self::QueryResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(fidl_fuchsia_hardware_block::BlockInfo, u64), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                CommonQueryResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x1551192b715c20b0,
            >(_buf?)?;
            Ok((_response.info, _response.block_op_size))
        }
        self.client.send_query_and_decode::<
            fidl::encoding::EmptyPayload,
            (fidl_fuchsia_hardware_block::BlockInfo, u64),
        >(
            (),
            0x1551192b715c20b0,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type QueueResponseFut = fidl::client::QueryResponseFut<
        (i32, BlockOp),
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#queue(&self, mut txn: BlockOp) -> Self::QueueResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(i32, BlockOp), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                CommonQueueResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x4d57f58df2b01c6a,
            >(_buf?)?;
            Ok((_response.status, _response.op))
        }
        self.client.send_query_and_decode::<CommonQueueRequest, (i32, BlockOp)>(
            (&mut txn,),
            0x4d57f58df2b01c6a,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

pub struct CommonEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for CommonEventStream {}

impl futures::stream::FusedStream for CommonEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for CommonEventStream {
    type Item = Result<CommonEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(CommonEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum CommonEvent {}

impl CommonEvent {
    /// Decodes a message buffer as a [`CommonEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<CommonEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <CommonMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.hardware.block.driver/Common.
pub struct CommonRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for CommonRequestStream {}

impl futures::stream::FusedStream for CommonRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for CommonRequestStream {
    type Protocol = CommonMarker;
    type ControlHandle = CommonControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        CommonControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for CommonRequestStream {
    type Item = Result<CommonRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled CommonRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))))
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                    0x1551192b715c20b0 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = CommonControlHandle { inner: this.inner.clone() };
                        Ok(CommonRequest::Query {
                            responder: CommonQueryResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x4d57f58df2b01c6a => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            CommonQueueRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<CommonQueueRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = CommonControlHandle { inner: this.inner.clone() };
                        Ok(CommonRequest::Queue {
                            txn: req.txn,

                            responder: CommonQueueResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <CommonMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

#[derive(Debug)]
pub enum CommonRequest {
    /// Obtains the parameters of the block device (`block_info_t`) and the
    /// required size of `block_txn_t`. The `block_txn_t`s submitted via
    /// `Queue()` must have `block_op_size_out - sizeof(block_op_t)` bytes
    /// available at the end of the structure for the use of the driver.
    Query { responder: CommonQueryResponder },
    /// Submits an I/O request for processing. Ownership of `op` is transferred
    /// to callee until `completion_cb` is invoked. Success or failure will be
    /// reported via the `completion_cb`. This callback may be called before the
    /// `Queue()` method returns.
    Queue { txn: BlockOp, responder: CommonQueueResponder },
}

impl CommonRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_query(self) -> Option<(CommonQueryResponder)> {
        if let CommonRequest::Query { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_queue(self) -> Option<(BlockOp, CommonQueueResponder)> {
        if let CommonRequest::Queue { txn, responder } = self {
            Some((txn, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            CommonRequest::Query { .. } => "query",
            CommonRequest::Queue { .. } => "queue",
        }
    }
}

#[derive(Debug, Clone)]
pub struct CommonControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for CommonControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl CommonControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct CommonQueryResponder {
    control_handle: std::mem::ManuallyDrop<CommonControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`CommonControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for CommonQueryResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for CommonQueryResponder {
    type ControlHandle = CommonControlHandle;

    fn control_handle(&self) -> &CommonControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl CommonQueryResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(
        self,
        mut info: &fidl_fuchsia_hardware_block::BlockInfo,
        mut block_op_size: u64,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(info, block_op_size);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut info: &fidl_fuchsia_hardware_block::BlockInfo,
        mut block_op_size: u64,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(info, block_op_size);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(
        &self,
        mut info: &fidl_fuchsia_hardware_block::BlockInfo,
        mut block_op_size: u64,
    ) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<CommonQueryResponse>(
            (info, block_op_size),
            self.tx_id,
            0x1551192b715c20b0,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct CommonQueueResponder {
    control_handle: std::mem::ManuallyDrop<CommonControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`CommonControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for CommonQueueResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for CommonQueueResponder {
    type ControlHandle = CommonControlHandle;

    fn control_handle(&self) -> &CommonControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl CommonQueueResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut status: i32, mut op: BlockOp) -> Result<(), fidl::Error> {
        let _result = self.send_raw(status, op);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut status: i32,
        mut op: BlockOp,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(status, op);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut status: i32, mut op: BlockOp) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<CommonQueueResponse>(
            (status, &mut op),
            self.tx_id,
            0x4d57f58df2b01c6a,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

mod internal {
    use super::*;
    unsafe impl fidl::encoding::TypeMarker for BlockIoFlag {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    impl fidl::encoding::ValueTypeMarker for BlockIoFlag {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            *value
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Self, D> for BlockIoFlag {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            if self.bits() & Self::all().bits() != self.bits() {
                return Err(fidl::Error::InvalidBitsValue);
            }
            encoder.write_num(self.bits(), offset);
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for BlockIoFlag {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::empty()
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u32>(offset);
            *self = Self::from_bits(prim).ok_or(fidl::Error::InvalidBitsValue)?;
            Ok(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for BlockOpcode {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            std::mem::align_of::<u8>()
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            std::mem::size_of::<u8>()
        }

        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            false
        }
    }

    impl fidl::encoding::ValueTypeMarker for BlockOpcode {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            *value
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Self, D> for BlockOpcode {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            encoder.write_num(self.into_primitive(), offset);
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for BlockOpcode {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Read
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u8>(offset);

            *self = Self::from_primitive(prim).ok_or(fidl::Error::InvalidEnumValue)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for BlockCommand {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for BlockCommand {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            8
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<BlockCommand, D>
        for &BlockCommand
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockCommand>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<BlockCommand, D>::encode(
                (
                    <BlockOpcode as fidl::encoding::ValueTypeMarker>::borrow(&self.opcode),
                    <BlockIoFlag as fidl::encoding::ValueTypeMarker>::borrow(&self.flags),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<BlockOpcode, D>,
            T1: fidl::encoding::Encode<BlockIoFlag, D>,
        > fidl::encoding::Encode<BlockCommand, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockCommand>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(0);
                (ptr as *mut u32).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 4, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for BlockCommand {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                opcode: fidl::new_empty!(BlockOpcode, D),
                flags: fidl::new_empty!(BlockIoFlag, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(0) };
            let padval = unsafe { (ptr as *const u32).read_unaligned() };
            let mask = 0xffffff00u32;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 0 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(BlockOpcode, D, &mut self.opcode, decoder, offset + 0, _depth)?;
            fidl::decode!(BlockIoFlag, D, &mut self.flags, decoder, offset + 4, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for BlockReadWrite {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for BlockReadWrite {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            40
        }
    }

    unsafe impl
        fidl::encoding::Encode<BlockReadWrite, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut BlockReadWrite
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockReadWrite>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<BlockReadWrite, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <BlockCommand as fidl::encoding::ValueTypeMarker>::borrow(&self.command),
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.extra),
                    <fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.vmo),
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.length),
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.offset_dev),
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.offset_vmo),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            T0: fidl::encoding::Encode<BlockCommand, fidl::encoding::DefaultFuchsiaResourceDialect>,
            T1: fidl::encoding::Encode<u32, fidl::encoding::DefaultFuchsiaResourceDialect>,
            T2: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::Vmo,
                    { fidl::ObjectType::VMO.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            T3: fidl::encoding::Encode<u32, fidl::encoding::DefaultFuchsiaResourceDialect>,
            T4: fidl::encoding::Encode<u64, fidl::encoding::DefaultFuchsiaResourceDialect>,
            T5: fidl::encoding::Encode<u64, fidl::encoding::DefaultFuchsiaResourceDialect>,
        > fidl::encoding::Encode<BlockReadWrite, fidl::encoding::DefaultFuchsiaResourceDialect>
        for (T0, T1, T2, T3, T4, T5)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockReadWrite>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(16);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            self.2.encode(encoder, offset + 12, depth)?;
            self.3.encode(encoder, offset + 16, depth)?;
            self.4.encode(encoder, offset + 24, depth)?;
            self.5.encode(encoder, offset + 32, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for BlockReadWrite
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                command: fidl::new_empty!(
                    BlockCommand,
                    fidl::encoding::DefaultFuchsiaResourceDialect
                ),
                extra: fidl::new_empty!(u32, fidl::encoding::DefaultFuchsiaResourceDialect),
                vmo: fidl::new_empty!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect),
                length: fidl::new_empty!(u32, fidl::encoding::DefaultFuchsiaResourceDialect),
                offset_dev: fidl::new_empty!(u64, fidl::encoding::DefaultFuchsiaResourceDialect),
                offset_vmo: fidl::new_empty!(u64, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(16) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 16 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(
                BlockCommand,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.command,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                u32,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.extra,
                decoder,
                offset + 8,
                _depth
            )?;
            fidl::decode!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.vmo, decoder, offset + 12, _depth)?;
            fidl::decode!(
                u32,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.length,
                decoder,
                offset + 16,
                _depth
            )?;
            fidl::decode!(
                u64,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.offset_dev,
                decoder,
                offset + 24,
                _depth
            )?;
            fidl::decode!(
                u64,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.offset_vmo,
                decoder,
                offset + 32,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for BlockTrim {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for BlockTrim {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            24
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<BlockTrim, D>
        for &BlockTrim
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockTrim>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<BlockTrim, D>::encode(
                (
                    <BlockCommand as fidl::encoding::ValueTypeMarker>::borrow(&self.command),
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.length),
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.offset_dev),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<BlockCommand, D>,
            T1: fidl::encoding::Encode<u32, D>,
            T2: fidl::encoding::Encode<u64, D>,
        > fidl::encoding::Encode<BlockTrim, D> for (T0, T1, T2)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockTrim>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(8);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            self.2.encode(encoder, offset + 16, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for BlockTrim {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                command: fidl::new_empty!(BlockCommand, D),
                length: fidl::new_empty!(u32, D),
                offset_dev: fidl::new_empty!(u64, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(8) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 8 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(BlockCommand, D, &mut self.command, decoder, offset + 0, _depth)?;
            fidl::decode!(u32, D, &mut self.length, decoder, offset + 8, _depth)?;
            fidl::decode!(u64, D, &mut self.offset_dev, decoder, offset + 16, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for CommonQueryResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for CommonQueryResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            32
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<CommonQueryResponse, D>
        for &CommonQueryResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueryResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<CommonQueryResponse, D>::encode(
                (
                    <fidl_fuchsia_hardware_block::BlockInfo as fidl::encoding::ValueTypeMarker>::borrow(&self.info),
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.block_op_size),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<fidl_fuchsia_hardware_block::BlockInfo, D>,
            T1: fidl::encoding::Encode<u64, D>,
        > fidl::encoding::Encode<CommonQueryResponse, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueryResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 24, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for CommonQueryResponse {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                info: fidl::new_empty!(fidl_fuchsia_hardware_block::BlockInfo, D),
                block_op_size: fidl::new_empty!(u64, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl_fuchsia_hardware_block::BlockInfo,
                D,
                &mut self.info,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(u64, D, &mut self.block_op_size, decoder, offset + 24, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for CommonQueueRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for CommonQueueRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl
        fidl::encoding::Encode<CommonQueueRequest, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut CommonQueueRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueueRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                CommonQueueRequest,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<BlockOp as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.txn),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<BlockOp, fidl::encoding::DefaultFuchsiaResourceDialect>>
        fidl::encoding::Encode<CommonQueueRequest, fidl::encoding::DefaultFuchsiaResourceDialect>
        for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueueRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for CommonQueueRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { txn: fidl::new_empty!(BlockOp, fidl::encoding::DefaultFuchsiaResourceDialect) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                BlockOp,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.txn,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for CommonQueueResponse {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for CommonQueueResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            24
        }
    }

    unsafe impl
        fidl::encoding::Encode<CommonQueueResponse, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut CommonQueueResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueueResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                CommonQueueResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (
                    <i32 as fidl::encoding::ValueTypeMarker>::borrow(&self.status),
                    <BlockOp as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.op),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
            T0: fidl::encoding::Encode<i32, fidl::encoding::DefaultFuchsiaResourceDialect>,
            T1: fidl::encoding::Encode<BlockOp, fidl::encoding::DefaultFuchsiaResourceDialect>,
        >
        fidl::encoding::Encode<CommonQueueResponse, fidl::encoding::DefaultFuchsiaResourceDialect>
        for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CommonQueueResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(0);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for CommonQueueResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                status: fidl::new_empty!(i32, fidl::encoding::DefaultFuchsiaResourceDialect),
                op: fidl::new_empty!(BlockOp, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(0) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 0 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(
                i32,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.status,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                BlockOp,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.op,
                decoder,
                offset + 8,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for BlockOp {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for BlockOp {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl fidl::encoding::Encode<BlockOp, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut BlockOp
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<BlockOp>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                BlockOp::Command(ref val) => fidl::encoding::encode_in_envelope::<
                    BlockCommand,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                >(
                    <BlockCommand as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                BlockOp::Rw(ref mut val) => fidl::encoding::encode_in_envelope::<
                    BlockReadWrite,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                >(
                    <BlockReadWrite as fidl::encoding::ResourceTypeMarker>::take_or_borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                BlockOp::Trim(ref val) => fidl::encoding::encode_in_envelope::<
                    BlockTrim,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                >(
                    <BlockTrim as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
            }
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect> for BlockOp {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Command(fidl::new_empty!(
                BlockCommand,
                fidl::encoding::DefaultFuchsiaResourceDialect
            ))
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <BlockCommand as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => <BlockReadWrite as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                3 => <BlockTrim as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                _ => return Err(fidl::Error::UnknownUnionTag),
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Command(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = BlockOp::Command(fidl::new_empty!(
                            BlockCommand,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Command(ref mut val) = self {
                        fidl::decode!(
                            BlockCommand,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Rw(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = BlockOp::Rw(fidl::new_empty!(
                            BlockReadWrite,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Rw(ref mut val) = self {
                        fidl::decode!(
                            BlockReadWrite,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                3 => {
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Trim(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = BlockOp::Trim(fidl::new_empty!(
                            BlockTrim,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let BlockOp::Trim(ref mut val) = self {
                        fidl::decode!(
                            BlockTrim,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                ordinal => panic!("unexpected ordinal {:?}", ordinal),
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }
}