Method read_exact

nodedb-wal/src/reader.rs:159–163

(&mut self, buf: &mut [u8])

    }

    fn read_exact(&mut self, buf: &mut [u8]) -> Result<()> {
        self.file.read_exact(buf)?;
        self.offset += buf.len() as u64;
        Ok(())
    }
}

/// Attempt to read a WAL segment preamble from the start of a file.