Enum fidl_fuchsia_io::AdvisoryLockingRequest

pub enum AdvisoryLockingRequest {
    AdvisoryLock {
        request: AdvisoryLockRequest,
        responder: AdvisoryLockingAdvisoryLockResponder,
    },
}

Advisory locking protocol.

This protocol is intended to be composed into the |File| protocol to provide support for advisory locking.

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.

These primitives are designed to support the flock() and fcntl(), specifically F_SETLK, F_SETLKW, and F_GETLK, functionality that code running on Fuchsia expects from other operating systems.

Variants

AdvisoryLock

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.

Fields

request: AdvisoryLockRequest

responder: AdvisoryLockingAdvisoryLockResponder

Implementations

impl AdvisoryLockingRequest

pub fn into_advisory_lock( self ) -> Option<(AdvisoryLockRequest, AdvisoryLockingAdvisoryLockResponder)>

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

Name of the method defined in FIDL

Trait Implementations

impl Debug for AdvisoryLockingRequest

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

Formats the value using the given formatter.