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Add rpaths and runpaths to ELF #294

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merged 2 commits into from
Dec 9, 2021
Merged

Add rpaths and runpaths to ELF #294

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1885a73
elf: add rpaths
messense Dec 5, 2021
29de1ba
elf: add runpaths
messense Dec 5, 2021
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23 changes: 23 additions & 0 deletions src/elf/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,12 @@ if_sylvan! {
pub interpreter: Option<&'a str>,
/// A list of this binary's dynamic libraries it uses, if there are any
pub libraries: Vec<&'a str>,
/// A list of runtime search paths for this binary's dynamic libraries it uses, if there
/// are any. (deprecated)
pub rpaths: Vec<&'a str>,
/// A list of runtime search paths for this binary's dynamic libraries it uses, if there
/// are any.
pub runpaths: Vec<&'a str>,
/// Whether this is a 64-bit elf or not
pub is_64: bool,
/// Whether this is a shared object or not
Expand Down Expand Up @@ -239,6 +245,8 @@ if_sylvan! {
soname: None,
interpreter: None,
libraries: vec![],
rpaths: vec![],
runpaths: vec![],
is_64: misc.is_64,
is_lib: misc.is_lib,
entry: misc.entry,
Expand Down Expand Up @@ -296,6 +304,8 @@ if_sylvan! {

let mut soname = None;
let mut libraries = vec![];
let mut rpaths = vec![];
let mut runpaths = vec![];
let mut dynsyms = Symtab::default();
let mut dynrelas = RelocSection::default();
let mut dynrels = RelocSection::default();
Expand All @@ -316,6 +326,17 @@ if_sylvan! {
if dyn_info.needed_count > 0 {
libraries = dynamic.get_libraries(&dynstrtab);
}
for dyn_ in &dynamic.dyns {
if dyn_.d_tag == dynamic::DT_RPATH {
if let Some(path) = dynstrtab.get_at(dyn_.d_val as usize) {
rpaths.push(path);
}
} else if dyn_.d_tag == dynamic::DT_RUNPATH {
if let Some(path) = dynstrtab.get_at(dyn_.d_val as usize) {
runpaths.push(path);
}
}
}
// parse the dynamic relocations
dynrelas = RelocSection::parse(bytes, dyn_info.rela, dyn_info.relasz, true, ctx)?;
dynrels = RelocSection::parse(bytes, dyn_info.rel, dyn_info.relsz, false, ctx)?;
Expand Down Expand Up @@ -370,6 +391,8 @@ if_sylvan! {
soname,
interpreter,
libraries,
rpaths,
runpaths,
is_64: misc.is_64,
is_lib: misc.is_lib,
entry: misc.entry,
Expand Down