Struct BootLoaderEntryFile 

pub struct BootLoaderEntryFile {
    pub lines: Vec<String>,
}

Represents a parsed Boot Loader Specification entry file.

Contains the lines of a BLS .conf file and provides methods to query and modify entries like kernel paths, initrd files, and command-line options.

Fields

lines: Vec<String>

Lines from the bootloader entry configuration file

Implementations

impl BootLoaderEntryFile

pub fn new(content: &str) -> Self

Creates a new bootloader entry file by parsing the content.

Arguments

• content - The text content of the BLS entry file

Returns

A new BootLoaderEntryFile with lines split on newlines

pub fn get_values<'a>( &'a self, key: &'a str, ) -> impl Iterator<Item = &'a str> + 'a

Returns an iterator over all values for a given key in the entry file.

Arguments

• key - The key to search for (e.g., “initrd”, “options”)

Returns

An iterator yielding the value portion of each matching line

pub fn get_value(&self, key: &str) -> Option<&str>

Returns the first value for a given key in the entry file.

Arguments

• key - The key to search for (e.g., “linux”, “title”)

Returns

The value portion of the first matching line, or None if not found

pub fn add_cmdline(&mut self, arg: &str)

Adds a kernel command-line argument, possibly replacing a previous value.

arg can be something like “composefs=xyz” but it can also be something like “rw”. In either case, if the argument already existed, it will be replaced.

pub fn adjust_cmdline(&mut self, karg: Option<&str>, extra: &[&str])

Adjusts the kernel command-line arguments by adding a composefs karg (if provided) and adding additional arguments.

karg should be a complete kernel argument string such as "composefs.digest=v1-sha256-12:abc123" or "composefs=abc123" as produced by [composefs_boot::cmdline::ComposefsCmdline::to_cmdline_arg].

Trait Implementations

impl Debug for BootLoaderEntryFile

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.