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use procfs::prelude::*;
use std::collections::HashMap;
fn print(name: &str, indent: usize, mods: &HashMap<&str, Vec<&str>>) {
println!("{}{} {}", if indent == 0 { "-" } else { " " }, " ".repeat(indent), name);
if let Some(uses_list) = mods.get(name) {
for name in uses_list {
print(name, indent + 2, mods);
}
}
}
fn main() {
let procfs::KernelModules(modules) = Current::current().unwrap();
// each module has a list of what other modules use it. Let's invert this and create a list of the modules used by each module.
// This maps a module name to a list of modules that it uses
let mut map: HashMap<&str, Vec<&str>> = HashMap::new();
for module in modules.values() {
for name in &module.used_by {
map.entry(name).or_default().push(&module.name);
}
}
// println!("{:?}", map["xt_policy"]);
for modname in map.keys() {
print(modname, 0, &map);
}
}
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