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make-initrd-ng: use goblin instead of shelling out to patchelf and friends
This commit is contained in:
K900
parent
1356441cb1
commit
daee67dae6
92
pkgs/build-support/kernel/make-initrd-ng/Cargo.lock
generated
92
pkgs/build-support/kernel/make-initrd-ng/Cargo.lock
generated
@ -1,5 +1,97 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "goblin"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "91766b1121940d622933a13e20665857648681816089c9bc2075c4b75a6e4f6b"
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dependencies = [
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"log",
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"plain",
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"scroll",
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]
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[[package]]
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name = "log"
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version = "0.4.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "make-initrd-ng"
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version = "0.1.0"
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dependencies = [
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"goblin",
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]
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[[package]]
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name = "plain"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
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[[package]]
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name = "proc-macro2"
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version = "1.0.42"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c278e965f1d8cf32d6e0e96de3d3e79712178ae67986d9cf9151f51e95aac89b"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.20"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "scroll"
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version = "0.11.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "04c565b551bafbef4157586fa379538366e4385d42082f255bfd96e4fe8519da"
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dependencies = [
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"scroll_derive",
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]
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[[package]]
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name = "scroll_derive"
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version = "0.11.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bdbda6ac5cd1321e724fa9cee216f3a61885889b896f073b8f82322789c5250e"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "syn"
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version = "1.0.98"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "15c61ba63f9235225a22310255a29b806b907c9b8c964bcbd0a2c70f3f2deea7"
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@ -7,3 +7,4 @@ edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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goblin = "0.5.0"
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@ -3,11 +3,13 @@ use std::env;
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use std::ffi::OsStr;
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use std::fs;
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use std::hash::Hash;
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use std::io::{BufRead, BufReader, Error, ErrorKind};
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use std::io::{BufRead, BufReader, Error};
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use std::os::unix;
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use std::path::{Component, Path, PathBuf};
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use std::process::Command;
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use goblin::{elf::Elf, Object};
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struct NonRepeatingQueue<T> {
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queue: VecDeque<T>,
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seen: HashSet<T>,
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@ -38,50 +40,32 @@ impl<T: Clone + Eq + Hash> NonRepeatingQueue<T> {
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}
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}
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fn patch_elf<S: AsRef<OsStr>, P: AsRef<OsStr>>(mode: S, path: P) -> Result<String, Error> {
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let output = Command::new("patchelf").arg(&mode).arg(&path).output()?;
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if output.status.success() {
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Ok(String::from_utf8(output.stdout).expect("Failed to parse output"))
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} else {
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Err(Error::new(
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ErrorKind::Other,
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format!(
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"failed: patchelf {:?} {:?}",
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OsStr::new(&mode),
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OsStr::new(&path)
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),
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))
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}
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}
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fn copy_file<P: AsRef<Path> + AsRef<OsStr>, S: AsRef<Path> + AsRef<OsStr>>(
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fn add_dependencies<P: AsRef<Path> + AsRef<OsStr>>(
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source: P,
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target: S,
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elf: Elf,
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queue: &mut NonRepeatingQueue<Box<Path>>,
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) -> Result<(), Error> {
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fs::copy(&source, &target)?;
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if !Command::new("ldd").arg(&source).output()?.status.success() {
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// Not dynamically linked - no need to recurse
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return Ok(());
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) {
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if let Some(interp) = elf.interpreter {
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queue.push_back(Box::from(Path::new(interp)));
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}
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let rpath_string = patch_elf("--print-rpath", &source)?;
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let needed_string = patch_elf("--print-needed", &source)?;
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// Shared libraries don't have an interpreter
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if let Ok(interpreter_string) = patch_elf("--print-interpreter", &source) {
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queue.push_back(Box::from(Path::new(&interpreter_string.trim())));
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}
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let rpaths = if elf.runpaths.len() > 0 {
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elf.runpaths
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} else if elf.rpaths.len() > 0 {
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elf.rpaths
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} else {
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vec![]
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};
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let rpath = rpath_string
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.trim()
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.split(":")
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let rpaths_as_path = rpaths
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.into_iter()
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.flat_map(|p| p.split(":"))
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.map(|p| Box::<Path>::from(Path::new(p)))
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.collect::<Vec<_>>();
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for line in needed_string.lines() {
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for line in elf.libraries {
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let mut found = false;
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for path in &rpath {
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for path in &rpaths_as_path {
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let lib = path.join(line);
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if lib.exists() {
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// No need to recurse. The queue will bring it back round.
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@ -100,6 +84,19 @@ fn copy_file<P: AsRef<Path> + AsRef<OsStr>, S: AsRef<Path> + AsRef<OsStr>>(
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);
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}
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}
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}
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fn copy_file<P: AsRef<Path> + AsRef<OsStr>, S: AsRef<Path> + AsRef<OsStr>>(
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source: P,
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target: S,
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queue: &mut NonRepeatingQueue<Box<Path>>,
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) -> Result<(), Error> {
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fs::copy(&source, &target)?;
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let contents = fs::read(&source)?;
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if let Ok(Object::Elf(e)) = Object::parse(&contents) {
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add_dependencies(source, e, queue);
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// Make file writable to strip it
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let mut permissions = fs::metadata(&target)?.permissions();
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@ -116,6 +113,7 @@ fn copy_file<P: AsRef<Path> + AsRef<OsStr>, S: AsRef<Path> + AsRef<OsStr>>(
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{
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println!("{:?} was not successfully stripped.", OsStr::new(&target));
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}
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};
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Ok(())
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}
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