ns_relocate::anonymous_namespace{relocate.hpp} Namespace Reference

Functions
Value< void >	relocate_impl (char **argv, uint32_t offset, fs::path const &path_file_self)
	Relocate the binary (by copying it) from the image.

Variables
constexpr std::array< const char *, 403 > const	arr_busybox_applet

Function Documentation

relocate_impl()

Value< void > ns_relocate::anonymous_namespace{relocate.hpp}::relocate_impl ( char ** argv, uint32_t offset, fs::path const & path_file_self )

inlinenodiscard

Relocate the binary (by copying it) from the image.

The binary is copied from the image to the instance directory, for an execve to be performed. This is done to free the main flatimage file to mount the filesystems.

Parameters

argv	Argument vector passed to the main program
offset	Offset to the reserved space, past the elf and appended binaries
path_file_self	Path to the current executable binary

Returns

Nothing on success, or the respective error

Lambda function to write a binary by reading its ELF header offset

Extracts a binary from the flatimage by reading its ELF header to determine size, and writes it to the specified path. Skips if the file already exists.

Parameters

path_file	Destination path for the extracted binary
offset_end	Current end offset in the source file

Returns

Value<std::pair<uint64_t,uint64_t>> Pair of (begin_offset, end_offset) for the next binary, or error

Lambda function to write a binary by reading size metadata at a specific offset

Reads a uint64_t size value at the specified offset, then extracts that many bytes to write the binary to the specified path. Skips if the file already exists.

Parameters

file_binary	Input stream positioned in the source flatimage file
path_file	Destination path for the extracted binary
offset_end	Current end offset in the source file

Returns

Value<std::pair<uint64_t,uint64_t>> Pair of (begin_offset, end_offset) for the next binary, or error

Definition at line 85 of file relocate.hpp.

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Variable Documentation

arr_busybox_applet

std::array<const char*,403> const ns_relocate::anonymous_namespace{relocate.hpp}::arr_busybox_applet

constexpr

Definition at line 38 of file relocate.hpp.