eutils_rs/proc/
pid.rs

1use super::{PidFd, PidNs};
2use anyhow::Result;
3use std::{
4    fs,
5    path::{Path, PathBuf},
6};
7
8#[derive(Debug)]
9pub struct Pid {
10    // parse from /proc/<PID>/fd
11    pub fds: Vec<PidFd>,
12
13    // parse from /proc/<PID>/ns
14    pub nss: Vec<PidNs>,
15}
16
17impl Pid {
18    pub fn from_file<P>(path: P) -> Pid
19    where
20        P: AsRef<Path>,
21    {
22        let mut pb = PathBuf::new();
23        let mut fds = Vec::default();
24        pb.push(path);
25
26        // /proc/<PID>/fd
27        pb.push("fd");
28        match fs::read_dir(&pb) {
29            Ok(entrys) => {
30                for entry in entrys {
31                    match entry {
32                        Ok(ent) => match PidFd::from_file(ent.path()) {
33                            Ok(fd) => {
34                                log::debug!("{:?}: {:?}", ent.path(), fd);
35                                fds.push(fd);
36                            }
37                            Err(e) => {
38                                println!("failed to parse file: {:?}, error: {}", ent.path(), e);
39                            }
40                        },
41                        Err(e) => {
42                            println!("failed to get entry: {}", e);
43                        }
44                    }
45                }
46            }
47            Err(e) => {
48                println!("failed to readdir: directory-{:?}, error-{}", pb, e);
49            }
50        }
51
52        pb.pop();
53
54        // /proc/<PID>/ns
55        pb.push("ns");
56        for entry in fs::read_dir(&pb) {}
57        pb.pop();
58
59        Pid {
60            fds,
61            nss: Vec::default(),
62        }
63    }
64}
65
66#[cfg(test)]
67mod tests {
68    use super::*;
69    #[test]
70    fn test_pid_from_file() {
71        let pid = Pid::from_file("/proc/1/");
72        // assert_eq!(pid.is_ok(), true);
73    }
74}
eutils_rs/proc/pid.rs

eutils_rs/proc/
pid.rs
