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//! Rustld is a modern (and working) ELF x86_64 & aarch64 loader (static & dynamic linker + compatible glibc & musl) written in Rust
//! You can run (almost) **everything** with it.
//!
//! ## Rust SDK:
//! ```ignore
//! // With syscall trampoline obfuscation:
//! rustld::ElfLoader::new_with_obf(true).execute_from_bytes(target_bytes, target_argv, None, None, false);
//! // Without obfuscation:
//! rustld::ElfLoader::new().execute_from_bytes(target_bytes, target_argv, None, None, false);
//! // Optional explicit entrypoint:
//! rustld::ElfLoader::new_with_obf(true).execute_from_bytes_with_entry(
//! target_bytes, target_argv,
//! Some("hello"), // or None
//! None, // or Some(0x399)
//! None, None, false,
//! );
//! ```
//!
//! ## Basic usage example:
//! ```no_run
//! use std::{ffi::OsStr, os::fd::AsRawFd, os::unix::ffi::OsStrExt};
//! use rustld::ElfLoader;
//!
//! fn main() {
//! unsafe {
//! let argv_storage = collect_process_arguments();
//! if argv_storage.len() < 2 {
//! eprintln!(
//! "Usage: rustld [--entry-symbol <name> | --entry-addr <addr>] <program> [args...]"
//! );
//! std::process::exit(1);
//! }
//! let mut args = argv_storage.into_iter();
//! let _self_name = args.next();
//! let mut entry_symbol: Option<String> = None;
//! let mut entry_address: Option<usize> = None;
//! let mut target_argv: Vec<String> = Vec::new();
//!
//! while let Some(arg) = args.next() {
//! if arg == "--entry-symbol" {
//! let Some(symbol) = args.next() else {
//! eprintln!("Error: --entry-symbol expects a value");
//! std::process::exit(1);
//! };
//! entry_symbol = Some(symbol);
//! continue;
//! }
//! if arg == "--entry-addr" {
//! let Some(raw_addr) = args.next() else {
//! eprintln!("Error: --entry-addr expects a value");
//! std::process::exit(1);
//! };
//! let parsed = parse_address(&raw_addr);
//! entry_address = Some(parsed);
//! continue;
//! }
//! target_argv.push(arg);
//! target_argv.extend(args);
//! break;
//! }
//!
//! if target_argv.is_empty() {
//! eprintln!("Error: missing target program path");
//! std::process::exit(1);
//! }
//! if entry_symbol.is_some() && entry_address.is_some() {
//! eprintln!("Error: --entry-symbol and --entry-addr are mutually exclusive");
//! std::process::exit(1);
//! }
//!
//! let target_bytes = map_file_readonly(OsStr::from_bytes(target_argv[0].as_bytes()));
//!
//! #[cfg(debug_assertions)]
//! eprintln!("Executing target binary: {}", target_argv[0]);
//! if entry_symbol.is_some() || entry_address.is_some() {
//! ElfLoader::new_with_obf(true).execute_from_bytes_with_entry(
//! target_bytes,
//! target_argv,
//! entry_symbol.as_deref(),
//! entry_address,
//! None,
//! None,
//! false,
//! );
//! } else {
//! ElfLoader::new_with_obf(true).execute_from_bytes(target_bytes, target_argv, None, None, false);
//! }
//! }
//! }
//!
//! fn parse_address(raw: &str) -> usize {
//! let (digits, radix) = if let Some(hex) = raw.strip_prefix("0x") {
//! (hex, 16)
//! } else if let Some(hex) = raw.strip_prefix("0X") {
//! (hex, 16)
//! } else {
//! (raw, 10)
//! };
//!
//! match usize::from_str_radix(digits, radix) {
//! Ok(value) => value,
//! Err(_) => {
//! eprintln!("Error: invalid entry address: {raw}");
//! std::process::exit(1);
//! }
//! }
//! }
//!
//! fn collect_process_arguments() -> Vec<String> {
//! std::env::args_os()
//! .map(|arg| arg.to_string_lossy().into_owned())
//! .collect()
//! }
//!
//! unsafe fn map_file_readonly(path: &OsStr) -> &'static [u8] {
//! use rustld::syscall::mmap::{self, MAP_PRIVATE, PROT_READ};
//!
//! let file = match std::fs::File::open(path) {
//! Ok(file) => file,
//! Err(error) => {
//! eprintln!("Error: could not open target binary: {error}");
//! std::process::exit(1);
//! }
//! };
//!
//! let length = match file.metadata() {
//! Ok(metadata) => metadata.len() as usize,
//! Err(error) => {
//! eprintln!("Error: could not stat target binary: {error}");
//! std::process::exit(1);
//! }
//! };
//!
//! if length == 0 {
//! eprintln!("Error: target binary is empty");
//! std::process::exit(1);
//! }
//!
//! let mapped = mmap::mmap(
//! core::ptr::null_mut(),
//! length,
//! PROT_READ,
//! MAP_PRIVATE,
//! file.as_raw_fd() as isize,
//! 0,
//! );
//! let mapped_addr = mapped as isize;
//! if mapped_addr < 0 {
//! eprintln!("Error: could not map target binary");
//! std::process::exit(1);
//! }
//!
//! core::mem::drop(file);
//! core::slice::from_raw_parts(mapped as *const u8, length)
//! }
//! ```
//!
pub
pub use ;
pub use ;