Fires when the OS needs to truncate (set the size of) a file.
class FUSETruncateEventParams(object): @property def path() -> str: ... @property def file_context() -> int: ... @property def size() -> int: ... @property def result() -> int: ... @result.setter def result(value) -> None: ... # In class FUSE: @property def on_truncate() -> Callable[[FUSETruncateEventParams], None]: ... @on_truncate.setter def on_truncate(event_hook: Callable[[FUSETruncateEventParams], None]) -> None: ...
This event fires when the OS wants to set the size of the file, identified by either Path or FileContext.
The Size parameter contains the new file size. If the new size is larger than the old size, the added space is expected to be filled with null bytes ('\0').
The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource isn't available, security checks failed, etc.), set it to a negative error code value (e.g. -ENOENT to indicate that the file does not exist) to report an appropriate error. Please refer to the Error Reporting and Handling topic for more information.