If a file is deleted while still opened by a process, the fd under /proc/$pid/fd/$fd will show up as
[tatref@srv dev]$ ls -ld /proc/12779/fd/*
lr-x------ 1 tatref tatref 64 Oct 16 01:00 /proc/12779/fd/4 -> '/home/tatref/dev/tes (deleted)'
We can get that info with
use std::fs::File;
use std::fs::Metadata;
use std::os::unix::fs::MetadataExt;
let f = File::open(&format!("/proc/{}/fd/{}", p.pid, fd.fd)).unwrap();
let metadata = f.metadata().unwrap();
if metadata.nlink() == 0 {}
So this means format a String, open a file, and do a syscall to get metadata.
Currently it seems there is no easier API in procfs to access this information (please correct me if I'm wrong).
FDTarget has a Path variant, but there is no guarantee that another file with the same name hasn't be created.
Maybe we could store a File in the FDInfo, and add it where it is created:
Hi,
If a file is deleted while still opened by a process, the fd under
/proc/$pid/fd/$fdwill show up asWe can get that info with
So this means format a String, open a file, and do a syscall to get metadata.
Currently it seems there is no easier API in
procfsto access this information (please correct me if I'm wrong).FDTargethas aPathvariant, but there is no guarantee that another file with the same name hasn't be created.Maybe we could store a
Filein theFDInfo, and add it where it is created:https://github.com/eminence/procfs/blob/e303757cd3e21c763e339f6f7e4c9cb4e435ff83/procfs/src/process/mod.rs#L149-L175
What do you think?