Struct FileEditFile 

pub struct FileEditFile<'a> { /* private fields */ }

File file editor.

Implementations

impl<'a> FileEditFile<'a>

pub fn descriptor(&self) -> &Descriptor

Gets the file descriptor as-is.

pub fn set_content( &mut self, content_type: u32, content_size: u32, ) -> &mut FileEditFile<'a>

Sets the content type and size for this file descriptor.

Note that a content type of 0 gets overwritten by a type of 1.

pub fn set_section(&mut self, section: &Section) -> &mut FileEditFile<'a>

Assigns an existing section object to this file descriptor.

This can be used to make different descriptors point to the same data.

pub fn allocate_data(&mut self) -> &mut FileEditFile<'a>

Allocates and assigns space for the data.

The size allocated is defined by a previous call to set_content’s content_size argument.

The space allocated is logically uninitialized and must be initialized with write_data or zero_data.

pub fn write_data( &mut self, data: &[u8], key: &Key, ) -> Result<&mut FileEditFile<'a>>

Copies and encrypts the data with the given key into the address specified by this file descriptor.

pub fn zero_data(&mut self, key: &Key) -> Result<&mut FileEditFile<'a>>

Initialize the data with zeroes.

pub fn reencrypt_data(&mut self, old_key: &Key, key: &Key) -> Result<()>

Reencrypts the data.

The file must be initialized (either through init_data or zero_data) before it can be updated.

Consistency guarantees

The file contents are updated inplace. In the case of a failure (forced crash or power loss) the consistency is not guaranteed.

If consistency is important, consider removing & creating the file again instead.