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fix(memtrack): support non-x86 libc paths #183

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Merged
not-matthias merged 1 commit into from
Jan 5, 2026
Merged

fix(memtrack): support non-x86 libc paths #183

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1 change: 1 addition & 0 deletions Cargo.lock
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1 change: 1 addition & 0 deletions crates/memtrack/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ static_assertions = "1.1"
itertools = { workspace = true }
paste = "1.0"
libbpf-rs = { version = "0.25.0", features = ["vendored"], optional = true }
glob = "0.3.3"

[build-dependencies]
libbpf-cargo = { version = "0.25.0", optional = true }
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42 changes: 14 additions & 28 deletions crates/memtrack/src/libc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,36 +2,22 @@
pub fn find_libc_paths() -> anyhow::Result<Vec<std::path::PathBuf>> {
use itertools::Itertools;

let mut paths = vec![
"/lib/x86_64-linux-gnu/libc.so.6".into(),
"/usr/lib/x86_64-linux-gnu/libc.so.6".into(),
"/lib64/libc.so.6".into(),
"/usr/lib64/libc.so.6".into(),
let patterns = [
// Debian, Ubuntu: Standard Linux multiarch paths
"/lib/*-linux-gnu/libc.so.6",
"/usr/lib/*-linux-gnu/libc.so.6",
// RHEL, Fedora, CentOS, Arch:
"/lib*/libc.so.6",
"/usr/lib*/libc.so.6",
// NixOS: find all glibc versions in the Nix store
"/nix/store/*glibc*/lib/libc.so.6",
];

// On NixOS, try to find all glibc versions in the Nix store
if let Ok(entries) = std::fs::read_dir("/nix/store") {
let nix_paths: Vec<_> = entries
.filter_map(|entry| {
let Ok(entry) = entry else { return None };

let path = entry.path();
let file_name = path.file_name()?;
let name = file_name.to_string_lossy();

// Look for glibc directories
if name.contains("glibc") && !name.contains("locales") && !name.contains("iconv") {
return Some(path.join("lib").join("libc.so.6"));
}
None
})
.collect();

paths.extend(nix_paths);
}

let existing_paths = paths
.into_iter()
let existing_paths = patterns
.iter()
.flat_map(|pattern| glob::glob(pattern).ok())
.flatten()
.filter_map(|p| p.ok())
.filter_map(|p| p.canonicalize().ok())
.filter(|path| {
let Ok(metadata) = std::fs::metadata(path) else {
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