Method write_incompatible_features

block/src/qcow/header.rs:515–524

Write only the incompatible_features field to the file at its fixed offset.

(&self, file: &mut F)

    /// Write only the incompatible_features field to the file at its fixed offset.
    fn write_incompatible_features<F: Seek + Write>(&self, file: &mut F) -> BlockResult<()> {
        if self.version != 3 {
            return Ok(());
        }
        file.seek(SeekFrom::Start(V2_BARE_HEADER_SIZE as u64))
            .map_err(|e| BlockError::new(BlockErrorKind::Io, Error::WritingHeader(e)))?;
        u64::write_be(file, self.incompatible_features)
            .map_err(|e| BlockError::new(BlockErrorKind::Io, Error::WritingHeader(e)))?;
        Ok(())
    }

    /// Set or clear the dirty bit for QCOW2 v3 images.
    ///