Function read_capped 

pub fn read_capped<R: Read>(
    reader: R,
    limit: u64,
) -> Result<Vec<u8>, PathSecurityError>

Read at most limit bytes from reader, erroring if more are available.

This bounds memory use for streamed inputs (e.g. standard input) where no size is known in advance.

Errors

Returns PathSecurityError::TooLarge if reader yields more than limit bytes, or PathSecurityError::Io on an underlying read error.