fidl_next_fuchsia_io

Trait FileClientSender

Source 
pub trait FileClientSender {
    type Transport: Transport;


Show 31 methods    // Required methods
    fn advisory_lock<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, AdvisoryLock>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireAdvisoryLockingAdvisoryLockRequest>;
    fn link_into<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, LinkInto>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireLinkableLinkIntoRequest>;
    fn clone<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireCloneableCloneRequest>;
    fn close(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, Close>, EncodeError>;
    fn query(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, Query>, EncodeError>;
    fn deprecated_clone<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedCloneRequest>;
    fn get_attr(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetAttr>, EncodeError>;
    fn set_attr<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, SetAttr>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetAttrRequest>;
    fn deprecated_get_flags(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedGetFlags>, EncodeError>;
    fn deprecated_set_flags<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedSetFlags>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedSetFlagsRequest>;
    fn get_flags(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetFlags>, EncodeError>;
    fn set_flags<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, SetFlags>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetFlagsRequest>;
    fn query_filesystem(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, QueryFilesystem>, EncodeError>;
    fn get_connection_info(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetConnectionInfo>, EncodeError>;
    fn get_attributes<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetAttributes>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetAttributesRequest>;
    fn update_attributes<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, UpdateAttributes>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireMutableNodeAttributes>;
    fn sync(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, Sync>, EncodeError>;
    fn list_extended_attributes<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeListExtendedAttributesRequest>;
    fn get_extended_attribute<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetExtendedAttribute>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetExtendedAttributeRequest>;
    fn set_extended_attribute<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, SetExtendedAttribute>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetExtendedAttributeRequest>;
    fn remove_extended_attribute<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, RemoveExtendedAttribute>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeRemoveExtendedAttributeRequest>;
    fn read<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, Read>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireReadableReadRequest>;
    fn write<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, Write>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireWritableWriteRequest>;
    fn describe(
        &self,
    ) -> Result<ResponseFuture<'_, Self::Transport, Describe>, EncodeError>;
    fn seek<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, Seek>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileSeekRequest>;
    fn read_at<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, ReadAt>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileReadAtRequest>;
    fn write_at<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, WriteAt>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileWriteAtRequest>;
    fn resize<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, Resize>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileResizeRequest>;
    fn get_backing_memory<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, GetBackingMemory>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileGetBackingMemoryRequest>;
    fn allocate<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, Allocate>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileAllocateRequest>;
    fn enable_verity<___R>(
        &self,
        request: &mut ___R,
    ) -> Result<ResponseFuture<'_, Self::Transport, EnableVerity>, EncodeError>
       where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileEnableVerityRequest>;

}
Expand description

A helper trait for the File client sender.

Required Associated Types§

Source

type Transport: Transport

Required Methods§

Source

fn advisory_lock<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, AdvisoryLock>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireAdvisoryLockingAdvisoryLockRequest>,

Acquires an advisory lock on the underlying file.

The lock lasts until either this connection is closed or this method is called with |AdvisoryLockType.UNLOCK| to release the lock explicitly.

Advisory locks are purely advisory. They do not prevent actual read or write operations from occurring on the file, either through this connection or through other connections.

This method requires the following rights:

  • [Rights.READ_BYTES] if request.type is [AdvisoryLockType.READ].
  • [Rights.WRITE_BYTES] if request.type is [AdvisoryLockType.WRITE].
§Errors
  • ZX_ERR_BAD_STATE The specified type of lock cannot be acquired. For example, another connection might hold a conflicting lock type.
  • ZX_ERR_NOT_SUPPORTED This file does not support advisory locking.
  • ZX_ERR_ACCESS_DENIED This connection does not have sufficient rights to acquire the given type of lock.

Creates a link to this this object with name dst in the directory represented by dst_parent_token.

dst must be a resolved object name. Including “/” in the string will return ZX_ERR_INVALID_ARGS.

This method requires the maximal set of rights supported by the filesystem for this object. For files this would typically be [Rights.READ_BYTES], [Rights.WRITE_BYTES], [Rights.GET_ATTRIBUTES] and [Rights.UPDATE_ATTRIBUTES]. Some filesystems might also support the [Rights.EXECUTE] right. Insufficient rights will result in ZX_ERR_ACCESS_DENIED.

If this object has no links and is NOT an unnamed temporary object (objects opened with Flags.FLAG_CREATE_AS_UNNAMED_TEMPORARY), it will fail with ZX_ERR_NOT_FOUND.

For unnamed temporary objects, use LinkInto to give it a name. Upon successful completion, the object will be permanently linked to the filesystem. Requires that the unnamed temporary object is linkable, if not, it will fail with ZX_ERR_NOT_FOUND.

This method does not have the same atomicity properties has the Directory::Link method, which means that calling Open then LinkInto is not equivalent to Directory::Link because LinkInto will not prevent the source from being renamed or unlinked.

Source

fn clone<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireCloneableCloneRequest>,

Source

fn close( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Close>, EncodeError>

Terminates the connection.

After calling Close, the client must not send any other requests.

Servers, after sending the status response, should close the connection regardless of status and without sending an epitaph.

Closing the client end of the channel should be semantically equivalent to calling Close without knowing when the close has completed or its status.

Source

fn query( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Query>, EncodeError>

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fn deprecated_clone<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedCloneRequest>,

DEPRECATED - Use fuchsia.unknown/Cloneable.Clone instead.

Source

fn get_attr( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetAttr>, EncodeError>

Acquires information about the node.

This method does not require any rights.

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fn set_attr<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetAttr>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetAttrRequest>,

Updates information about the node.

Returns ZX_ERR_NOT_SUPPORTED if any attributes specified by [flags] are not supported.

This method requires following rights: OpenFlags.RIGHT_WRITABLE, otherwise returns ZX_ERR_BAD_HANDLE.

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fn deprecated_get_flags( &self, ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedGetFlags>, EncodeError>

[DEPRECATED - Use new GetFlags method instead.]

Source

fn deprecated_set_flags<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedSetFlags>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedSetFlagsRequest>,

[DEPRECATED - Use new SetFlags method instead.]

Source

fn get_flags( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetFlags>, EncodeError>

Queries the flags that apply to this node after it has been opened/created. This method does not require any rights.

Note that the final set of flags that apply to the connection may differ from those specified with the fuchsia.io/Directory.Open request used to create it:

  • Flags.PERM_INHERIT_*: Only applies when determining connection rights.
  • Flags.PROTOCOL_*: Only the protocol of the connection will be present.
  • Flags.FLAG_*: Only applies when opening the resource, not part of the connection.
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fn set_flags<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetFlags>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetFlagsRequest>,

Sets the flags that apply to this node after it has been opened. This method does not require any rights.

Only Flags.FILE_APPEND is currently supported. Calling this method without any flags will clear append mode.

Errors:

  • ZX_ERR_NOT_SUPPORTED: The object does not support this feature or the specified flags.
  • ZX_ERR_INVALID_ARGS: flags other than Flags.FILE_APPEND were specified.
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fn query_filesystem( &self, ) -> Result<ResponseFuture<'_, Self::Transport, QueryFilesystem>, EncodeError>

Query the filesystem for filesystem-specific information.

Source

fn get_connection_info( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetConnectionInfo>, EncodeError>

Acquires information about the connection.

This method does not require any rights.

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fn get_attributes<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetAttributes>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetAttributesRequest>,

Acquires information about the node.

The attributes of a node should be stable, independent of the specific protocol used to access it.

If a particular attribute is not applicable or not supported, filesystems should leave the corresponding field absent.

  • query a bit-mask specifying which attributes to fetch. The server should not return more than necessary.
  • attributes the returned attributes.

This method requires the [Rights.GET_ATTRIBUTES] right.

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fn update_attributes<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, UpdateAttributes>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireMutableNodeAttributes>,

Updates information about the node.

  • attributes the presence of a table field in attributes indicates the intent to update the corresponding attribute.

Returns ZX_ERR_NOT_SUPPORTED if the node does not support any of the specified attributes.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn sync(&self) -> Result<ResponseFuture<'_, Self::Transport, Sync>, EncodeError>

Synchronizes updates to the node to the underlying media, if it exists.

This method will return when the filesystem server has flushed the relevant updates to the underlying media, but does not guarantee the underlying media has persisted the information, nor that any information is committed to hardware. Clients may use Sync to ensure ordering between operations.

This method does not require any rights.

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fn list_extended_attributes<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeListExtendedAttributesRequest>,

Creates an iterator over all the extended attribute names associated with this node. If an error occurs it is returned as an epitaph on the iterator request channel, and then the channel is closed.

GetExtendedAttributes can be used with any of these names to retrieve the associated value.

This method requires the [Rights.GET_ATTRIBUTES] right.

Source

fn get_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetExtendedAttributeRequest>,

Get the value associated with the given attribute name for this node.

Attribute names have a maximum length of MAX_ATTRIBUTE_NAME. No particular structure is imposed on them.

This method requires the [Rights.GET_ATTRIBUTES] right.

Source

fn set_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetExtendedAttributeRequest>,

Set the value for the given attribute name to value for this node.

The attribute name may exist, in which case the attribute is updated. If the attribute doesn’t exist, it is created. The name should have no null bytes in it. If it does, ZX_ERR_INVALID_ARGS is returned.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn remove_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, RemoveExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeRemoveExtendedAttributeRequest>,

Remove the specified extended attribute.

If the attribute doesn’t exist, ZX_ERR_NOT_FOUND is returned.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn read<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Read>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireReadableReadRequest>,

Reads up to ‘count’ bytes at the seek offset. The seek offset is moved forward by the number of bytes read.

§Invariants
  • The returned data.length will never be greater than count.
  • If data.length is less than count, it means that the seek offset has reached the end of file as part of this operation.
  • If data.length is zero while count is not, it means that the seek offset is already at or beyond the end of file, and no data could be read.
  • If count is zero, the server should perform all the checks ensuring read access without actually read anything, and return an empty data vector.

This method requires the [Rights.READ_BYTES] right.

Returns ZX_ERR_OUT_OF_RANGE if count is greater than MAX_TRANSFER_SIZE.

Source

fn write<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Write>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireWritableWriteRequest>,

Writes data at the seek offset. The seek offset is moved forward by the number of bytes written. If the file is in append mode, the seek offset is first set to the end of the file, followed by the write, in one atomic step.

The file size may grow if the seek offset plus data.length is beyond the current end of file.

  • request data the byte buffer to write to the file.
  • response actual_count the number of bytes written.
§Invariants
  • The returned actual_count will never be greater than data.length.
  • If the server is unable to write all the data due to e.g. not enough space, actual_count may be less than data.length. If no bytes could be written, an error is returned.
  • If data.length is zero, the server should perform all the checks ensuring write access without mutating the file and return a successful write of zero bytes. The seek offset is still updated if in append mode.

This method requires the [Rights.WRITE_BYTES] right.

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fn describe( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Describe>, EncodeError>

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fn seek<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Seek>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileSeekRequest>,

Moves the offset at which the next invocation of [Read] or [Write] will occur. The seek offset is specific to each file connection.

  • request origin the reference point where offset will be based on.
  • request offset the number of bytes to seek.
  • response offset_from_start the adjusted seek offset, from the start of the file.

This method does not require any rights.

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fn read_at<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, ReadAt>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileReadAtRequest>,

Reads up to ‘count’ bytes at the provided offset. Does not affect the seek offset.

§Invariants
  • The returned data.length will never be greater than count.
  • If data.length is less than count, it means that ReadAt has hit the end of file as part of this operation.
  • If data.length is zero while count is not, it means that offset is at or past the end of file, and no data can be read.
  • If count is zero, the server should perform all the checks ensuring read access without actually reading anything, and return an empty data vector.

This method requires the [Rights.READ_BYTES] right.

Returns ZX_ERR_OUT_OF_RANGE if count is greater than MAX_TRANSFER_SIZE.

Source

fn write_at<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, WriteAt>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileWriteAtRequest>,

Writes data at the provided offset. Does not affect the seek offset.

The file size may grow if offset plus data.length is past the current end of file.

  • request data the byte buffer to write to the file.
  • request offset the offset from start of the file to begin writing.
  • response actual_count the number of bytes written.
§Invariants
  • The returned actual_count will never be greater than data.length.
  • If the server is unable to write all the data due to e.g. not enough space, actual_count may be less than data.length. If no bytes could be written, an error is returned.
  • If data.length is zero, the server should perform all the checks ensuring write access without mutating the file, and will return a successful write of zero bytes.

This method requires the [Rights.WRITE_BYTES] right.

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fn resize<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Resize>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileResizeRequest>,

Shrinks or grows the file size to ‘length’ bytes.

If file size is reduced by this operation, the extra trailing data’ is discarded. If file size is increased by this operation, the extended area appears as if it was zeroed.

This method requires the [Rights.WRITE_BYTES] right.

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fn get_backing_memory<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetBackingMemory>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileGetBackingMemoryRequest>,

Acquires a [zx.Handle:VMO] representing this file, if there is one, with the requested access rights.

Implementations are not required to implement files backed by VMOs so this request may fail. Additionally, implementations may only support a certain subset of the flags. Clients should be prepared with fallback behavior if this request fails.

If a client specifies neither PRIVATE_CLONE nor SHARED_BUFFER, the implementation is free to choose the semantics of the returned VMO.

  • request flags a VmoFlags indicating the desired mode of access.
  • response vmo the requested [zx.Handle:VMO].
  • error a [zx.Status] value indicating the failure.

This method requires the following rights:

  • [Rights.READ_BYTES] if flags includes [VmoFlags.READ].
  • [Rights.WRITE_BYTES] if flags includes [VmoFlags.WRITE].
  • [Rights.EXECUTE] if flags includes [VmoFlags.EXECUTE].
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fn allocate<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Allocate>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileAllocateRequest>,

Pre-allocate on-disk space for this file.

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fn enable_verity<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, EnableVerity>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileEnableVerityRequest>,

Enables verification for the file (permanently) which involves computing a merkle tree for the file. Forces a flush prior to building the merkle tree to ensure cached data is captured. Future reads will be verified against the computed merkle tree and writes will be rejected. This method can take some time to complete as it depends on the size of the file. This method can be aborted by closing the connection that this method was issued on.

This method requires the [Rights.UPDATE_ATTRIBUTES] right. Returns ZX_ERR_NOT_SUPPORTED if the filesystem does not support verity. Returns ZX_ERR_ALREADY_EXISTS if the file was already fsverity-enabled. Also returns any error that might arise from reading the file, or from flushing the file, such as ZX_ERR_IO.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

Source§

impl<___T> FileClientSender for ClientSender<___T, File>
where ___T: Transport,

Source§

fn advisory_lock<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, AdvisoryLock>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireAdvisoryLockingAdvisoryLockRequest>,

Acquires an advisory lock on the underlying file.

The lock lasts until either this connection is closed or this method is called with |AdvisoryLockType.UNLOCK| to release the lock explicitly.

Advisory locks are purely advisory. They do not prevent actual read or write operations from occurring on the file, either through this connection or through other connections.

This method requires the following rights:

  • [Rights.READ_BYTES] if request.type is [AdvisoryLockType.READ].
  • [Rights.WRITE_BYTES] if request.type is [AdvisoryLockType.WRITE].
§Errors
  • ZX_ERR_BAD_STATE The specified type of lock cannot be acquired. For example, another connection might hold a conflicting lock type.
  • ZX_ERR_NOT_SUPPORTED This file does not support advisory locking.
  • ZX_ERR_ACCESS_DENIED This connection does not have sufficient rights to acquire the given type of lock.

Creates a link to this this object with name dst in the directory represented by dst_parent_token.

dst must be a resolved object name. Including “/” in the string will return ZX_ERR_INVALID_ARGS.

This method requires the maximal set of rights supported by the filesystem for this object. For files this would typically be [Rights.READ_BYTES], [Rights.WRITE_BYTES], [Rights.GET_ATTRIBUTES] and [Rights.UPDATE_ATTRIBUTES]. Some filesystems might also support the [Rights.EXECUTE] right. Insufficient rights will result in ZX_ERR_ACCESS_DENIED.

If this object has no links and is NOT an unnamed temporary object (objects opened with Flags.FLAG_CREATE_AS_UNNAMED_TEMPORARY), it will fail with ZX_ERR_NOT_FOUND.

For unnamed temporary objects, use LinkInto to give it a name. Upon successful completion, the object will be permanently linked to the filesystem. Requires that the unnamed temporary object is linkable, if not, it will fail with ZX_ERR_NOT_FOUND.

This method does not have the same atomicity properties has the Directory::Link method, which means that calling Open then LinkInto is not equivalent to Directory::Link because LinkInto will not prevent the source from being renamed or unlinked.

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fn close( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Close>, EncodeError>

Terminates the connection.

After calling Close, the client must not send any other requests.

Servers, after sending the status response, should close the connection regardless of status and without sending an epitaph.

Closing the client end of the channel should be semantically equivalent to calling Close without knowing when the close has completed or its status.

Source§

fn deprecated_clone<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedCloneRequest>,

DEPRECATED - Use fuchsia.unknown/Cloneable.Clone instead.

Source§

fn get_attr( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetAttr>, EncodeError>

Acquires information about the node.

This method does not require any rights.

Source§

fn set_attr<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetAttr>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetAttrRequest>,

Updates information about the node.

Returns ZX_ERR_NOT_SUPPORTED if any attributes specified by [flags] are not supported.

This method requires following rights: OpenFlags.RIGHT_WRITABLE, otherwise returns ZX_ERR_BAD_HANDLE.

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fn deprecated_get_flags( &self, ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedGetFlags>, EncodeError>

[DEPRECATED - Use new GetFlags method instead.]

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fn deprecated_set_flags<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, DeprecatedSetFlags>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeDeprecatedSetFlagsRequest>,

[DEPRECATED - Use new SetFlags method instead.]

Source§

fn get_flags( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetFlags>, EncodeError>

Queries the flags that apply to this node after it has been opened/created. This method does not require any rights.

Note that the final set of flags that apply to the connection may differ from those specified with the fuchsia.io/Directory.Open request used to create it:

  • Flags.PERM_INHERIT_*: Only applies when determining connection rights.
  • Flags.PROTOCOL_*: Only the protocol of the connection will be present.
  • Flags.FLAG_*: Only applies when opening the resource, not part of the connection.
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fn set_flags<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetFlags>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetFlagsRequest>,

Sets the flags that apply to this node after it has been opened. This method does not require any rights.

Only Flags.FILE_APPEND is currently supported. Calling this method without any flags will clear append mode.

Errors:

  • ZX_ERR_NOT_SUPPORTED: The object does not support this feature or the specified flags.
  • ZX_ERR_INVALID_ARGS: flags other than Flags.FILE_APPEND were specified.
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fn query_filesystem( &self, ) -> Result<ResponseFuture<'_, Self::Transport, QueryFilesystem>, EncodeError>

Query the filesystem for filesystem-specific information.

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fn get_connection_info( &self, ) -> Result<ResponseFuture<'_, Self::Transport, GetConnectionInfo>, EncodeError>

Acquires information about the connection.

This method does not require any rights.

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fn get_attributes<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetAttributes>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetAttributesRequest>,

Acquires information about the node.

The attributes of a node should be stable, independent of the specific protocol used to access it.

If a particular attribute is not applicable or not supported, filesystems should leave the corresponding field absent.

  • query a bit-mask specifying which attributes to fetch. The server should not return more than necessary.
  • attributes the returned attributes.

This method requires the [Rights.GET_ATTRIBUTES] right.

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fn update_attributes<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, UpdateAttributes>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireMutableNodeAttributes>,

Updates information about the node.

  • attributes the presence of a table field in attributes indicates the intent to update the corresponding attribute.

Returns ZX_ERR_NOT_SUPPORTED if the node does not support any of the specified attributes.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn sync(&self) -> Result<ResponseFuture<'_, Self::Transport, Sync>, EncodeError>

Synchronizes updates to the node to the underlying media, if it exists.

This method will return when the filesystem server has flushed the relevant updates to the underlying media, but does not guarantee the underlying media has persisted the information, nor that any information is committed to hardware. Clients may use Sync to ensure ordering between operations.

This method does not require any rights.

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fn list_extended_attributes<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeListExtendedAttributesRequest>,

Creates an iterator over all the extended attribute names associated with this node. If an error occurs it is returned as an epitaph on the iterator request channel, and then the channel is closed.

GetExtendedAttributes can be used with any of these names to retrieve the associated value.

This method requires the [Rights.GET_ATTRIBUTES] right.

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fn get_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeGetExtendedAttributeRequest>,

Get the value associated with the given attribute name for this node.

Attribute names have a maximum length of MAX_ATTRIBUTE_NAME. No particular structure is imposed on them.

This method requires the [Rights.GET_ATTRIBUTES] right.

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fn set_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, SetExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeSetExtendedAttributeRequest>,

Set the value for the given attribute name to value for this node.

The attribute name may exist, in which case the attribute is updated. If the attribute doesn’t exist, it is created. The name should have no null bytes in it. If it does, ZX_ERR_INVALID_ARGS is returned.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn remove_extended_attribute<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, RemoveExtendedAttribute>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireNodeRemoveExtendedAttributeRequest>,

Remove the specified extended attribute.

If the attribute doesn’t exist, ZX_ERR_NOT_FOUND is returned.

This method requires the [Rights.UPDATE_ATTRIBUTES] right.

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fn read<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Read>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireReadableReadRequest>,

Reads up to ‘count’ bytes at the seek offset. The seek offset is moved forward by the number of bytes read.

§Invariants
  • The returned data.length will never be greater than count.
  • If data.length is less than count, it means that the seek offset has reached the end of file as part of this operation.
  • If data.length is zero while count is not, it means that the seek offset is already at or beyond the end of file, and no data could be read.
  • If count is zero, the server should perform all the checks ensuring read access without actually read anything, and return an empty data vector.

This method requires the [Rights.READ_BYTES] right.

Returns ZX_ERR_OUT_OF_RANGE if count is greater than MAX_TRANSFER_SIZE.

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fn write<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Write>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireWritableWriteRequest>,

Writes data at the seek offset. The seek offset is moved forward by the number of bytes written. If the file is in append mode, the seek offset is first set to the end of the file, followed by the write, in one atomic step.

The file size may grow if the seek offset plus data.length is beyond the current end of file.

  • request data the byte buffer to write to the file.
  • response actual_count the number of bytes written.
§Invariants
  • The returned actual_count will never be greater than data.length.
  • If the server is unable to write all the data due to e.g. not enough space, actual_count may be less than data.length. If no bytes could be written, an error is returned.
  • If data.length is zero, the server should perform all the checks ensuring write access without mutating the file and return a successful write of zero bytes. The seek offset is still updated if in append mode.

This method requires the [Rights.WRITE_BYTES] right.

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fn seek<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Seek>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileSeekRequest>,

Moves the offset at which the next invocation of [Read] or [Write] will occur. The seek offset is specific to each file connection.

  • request origin the reference point where offset will be based on.
  • request offset the number of bytes to seek.
  • response offset_from_start the adjusted seek offset, from the start of the file.

This method does not require any rights.

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fn read_at<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, ReadAt>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileReadAtRequest>,

Reads up to ‘count’ bytes at the provided offset. Does not affect the seek offset.

§Invariants
  • The returned data.length will never be greater than count.
  • If data.length is less than count, it means that ReadAt has hit the end of file as part of this operation.
  • If data.length is zero while count is not, it means that offset is at or past the end of file, and no data can be read.
  • If count is zero, the server should perform all the checks ensuring read access without actually reading anything, and return an empty data vector.

This method requires the [Rights.READ_BYTES] right.

Returns ZX_ERR_OUT_OF_RANGE if count is greater than MAX_TRANSFER_SIZE.

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fn write_at<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, WriteAt>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileWriteAtRequest>,

Writes data at the provided offset. Does not affect the seek offset.

The file size may grow if offset plus data.length is past the current end of file.

  • request data the byte buffer to write to the file.
  • request offset the offset from start of the file to begin writing.
  • response actual_count the number of bytes written.
§Invariants
  • The returned actual_count will never be greater than data.length.
  • If the server is unable to write all the data due to e.g. not enough space, actual_count may be less than data.length. If no bytes could be written, an error is returned.
  • If data.length is zero, the server should perform all the checks ensuring write access without mutating the file, and will return a successful write of zero bytes.

This method requires the [Rights.WRITE_BYTES] right.

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fn resize<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Resize>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileResizeRequest>,

Shrinks or grows the file size to ‘length’ bytes.

If file size is reduced by this operation, the extra trailing data’ is discarded. If file size is increased by this operation, the extended area appears as if it was zeroed.

This method requires the [Rights.WRITE_BYTES] right.

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fn get_backing_memory<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, GetBackingMemory>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileGetBackingMemoryRequest>,

Acquires a [zx.Handle:VMO] representing this file, if there is one, with the requested access rights.

Implementations are not required to implement files backed by VMOs so this request may fail. Additionally, implementations may only support a certain subset of the flags. Clients should be prepared with fallback behavior if this request fails.

If a client specifies neither PRIVATE_CLONE nor SHARED_BUFFER, the implementation is free to choose the semantics of the returned VMO.

  • request flags a VmoFlags indicating the desired mode of access.
  • response vmo the requested [zx.Handle:VMO].
  • error a [zx.Status] value indicating the failure.

This method requires the following rights:

  • [Rights.READ_BYTES] if flags includes [VmoFlags.READ].
  • [Rights.WRITE_BYTES] if flags includes [VmoFlags.WRITE].
  • [Rights.EXECUTE] if flags includes [VmoFlags.EXECUTE].
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fn allocate<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, Allocate>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileAllocateRequest>,

Pre-allocate on-disk space for this file.

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fn enable_verity<___R>( &self, request: &mut ___R, ) -> Result<ResponseFuture<'_, Self::Transport, EnableVerity>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireFileEnableVerityRequest>,

Enables verification for the file (permanently) which involves computing a merkle tree for the file. Forces a flush prior to building the merkle tree to ensure cached data is captured. Future reads will be verified against the computed merkle tree and writes will be rejected. This method can take some time to complete as it depends on the size of the file. This method can be aborted by closing the connection that this method was issued on.

This method requires the [Rights.UPDATE_ATTRIBUTES] right. Returns ZX_ERR_NOT_SUPPORTED if the filesystem does not support verity. Returns ZX_ERR_ALREADY_EXISTS if the file was already fsverity-enabled. Also returns any error that might arise from reading the file, or from flushing the file, such as ZX_ERR_IO.

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type Transport = ___T

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fn clone<___R>( &self, request: &mut ___R, ) -> Result<SendFuture<'_, Self::Transport>, EncodeError>
where ___R: Encode<<Self::Transport as Transport>::SendBuffer, Encoded = WireCloneableCloneRequest>,

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fn query( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Query>, EncodeError>

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fn describe( &self, ) -> Result<ResponseFuture<'_, Self::Transport, Describe>, EncodeError>

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