Struct CpioBuilder 

pub struct CpioBuilder { /* private fields */ }

A builder for creating cpio newc archives suitable for Linux initramfs.

Implementations

impl CpioBuilder

pub fn new() -> Self

Create a new, empty cpio archive builder.

pub fn add_dir(&mut self, path: &str)

Add a directory entry to the archive.

path must not include a leading / in the archive (e.g., “bin”, “etc”). Mode 0o755 is used for directories.

pub fn add_file(&mut self, path: &str, mode: u32, content: &[u8])

Add a regular file to the archive.

path is the archive-internal path (e.g., “init”, “bin/busybox”). mode is the Unix file mode (e.g., 0o100755 for executable).

pub fn add_symlink(&mut self, path: &str, target: &str)

Add a symlink to the archive.

The symlink path will point to target.

pub fn add_device( &mut self, path: &str, mode: u32, devmajor: u32, devminor: u32, )

Add a device node (character or block).

mode should include the device type bits (e.g., 0o020666 for char device). devmajor and devminor are the device major/minor numbers.

pub fn finish(self) -> Vec<u8>

Finalize the archive by appending the TRAILER!!! entry.

Returns the raw (uncompressed) cpio archive bytes.

pub fn finish_gzipped(self) -> Result<Vec<u8>, KernelError>

Finalize and gzip-compress the archive.

Returns the gzipped cpio archive suitable for use as a Linux initramfs.

Trait Implementations

impl Default for CpioBuilder

fn default() -> Self

Returns the “default value” for a type.