Enum PartitionRequest

pub enum PartitionRequest {
    GetInfo {
        responder: PartitionGetInfoResponder,
    },
    GetStats {
        clear: bool,
        responder: PartitionGetStatsResponder,
    },
    OpenSession {
        session: ServerEnd<SessionMarker>,
        control_handle: PartitionControlHandle,
    },
    OpenSessionWithOffsetMap {
        session: ServerEnd<SessionMarker>,
        offset_map: Option<ClientEnd<OffsetMapMarker>>,
        initial_mappings: Option<Vec<BlockOffsetMapping>>,
        control_handle: PartitionControlHandle,
    },
    GetTypeGuid {
        responder: PartitionGetTypeGuidResponder,
    },
    GetInstanceGuid {
        responder: PartitionGetInstanceGuidResponder,
    },
    GetName {
        responder: PartitionGetNameResponder,
    },
    GetMetadata {
        responder: PartitionGetMetadataResponder,
    },
}

Partition describes a region of one or more block devices, labelled with distinguishing identifiers.

Variants

GetInfo

Get information about the underlying block device.

Fields

responder: PartitionGetInfoResponder

GetStats

Returns stats about block device operations. Setting clear will reset stats counters.

Fields

clear: bool

responder: PartitionGetStatsResponder

OpenSession

Opens a new FIFO-based session on the block device.

Fields

session: ServerEnd<SessionMarker>

control_handle: PartitionControlHandle

OpenSessionWithOffsetMap

Opens a new FIFO-based session on the block device, providing an offset lookup map which transparently translates device offsets in block FIFO requests.

initial_mappings is a static set of mappings which the server can immediately use. If offset_map is not provided, this must be non-empty, and requests that fall outside of the mapped range will fail.

If offset_map is provided, whenever the server receives a request with a dev_offset that falls outside of the known range, it will consult offset_map to attempt to resolve the offset. Because these offset mappings must be stable for the duration of the session, the server may cache any mappings.

This interface is intended to be used internally between nested Block implementations, in order to provide passthrough I/O. For example, a fixed partition map (e.g. GPT) will serve a Block protocol for each partition, and will respond to OpenSession requests by calling OpenSessionWithOffsetMap on the underlying block device, establishing itself as the source for translating client block offsets (relative to the partition start) to absolute offsets. The client can then communicate directly with the underlying block device, and the partition offsets can be transparently applied to requests.

Fields

session: ServerEnd<SessionMarker>

offset_map: Option<ClientEnd<OffsetMapMarker>>

initial_mappings: Option<Vec<BlockOffsetMapping>>

control_handle: PartitionControlHandle

GetTypeGuid

Gets the type GUID of the partition (if one exists). If the partition has no type GUID, ZX_ERR_NOT_SUPPORTED is returned.

Fields

responder: PartitionGetTypeGuidResponder

GetInstanceGuid

Gets the instance GUID of the partition (if one exists). If the partition has no instance GUID, ZX_ERR_NOT_SUPPORTED is returned.

Fields

responder: PartitionGetInstanceGuidResponder

GetName

Gets the name of the partition (if one exists). If the partition has no name, ZX_ERR_NOT_SUPPORTED is returned.

Fields

responder: PartitionGetNameResponder

GetMetadata

Gets the metadata for the partition.

Fields may be absent if the partition doesn’t have the given metadata.

Fields

responder: PartitionGetMetadataResponder

Implementations

impl PartitionRequest

pub fn into_get_info(self) -> Option<PartitionGetInfoResponder>

pub fn into_get_stats(self) -> Option<(bool, PartitionGetStatsResponder)>

pub fn into_open_session( self, ) -> Option<(ServerEnd<SessionMarker>, PartitionControlHandle)>

pub fn into_open_session_with_offset_map( self, ) -> Option<(ServerEnd<SessionMarker>, Option<ClientEnd<OffsetMapMarker>>, Option<Vec<BlockOffsetMapping>>, PartitionControlHandle)>

pub fn into_get_type_guid(self) -> Option<PartitionGetTypeGuidResponder>

pub fn into_get_instance_guid(self) -> Option<PartitionGetInstanceGuidResponder>

pub fn into_get_name(self) -> Option<PartitionGetNameResponder>

pub fn into_get_metadata(self) -> Option<PartitionGetMetadataResponder>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for PartitionRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.