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+ +[[bin]] +name = "automount" +test = false +bench = false diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..eb16cd8 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,93 @@ +use anyhow::Result; +use dns_lookup::lookup_host; +use mountinfo::{MountInfo, ReadWrite, MountPoint}; +use ping::{dgramsock, rawsock::ping}; +use std::{ffi::OsStr, fs, path::PathBuf, sync::mpsc::{self, Receiver, Sender}, thread, time::Duration}; +use sys_mount::{unmount, UnmountFlags}; + +fn main() { + let mtab = MountInfo::new().unwrap(); + let mounting_points = mtab.mounting_points; + let relevant_mounts = mounting_points.iter().filter(|&mount_point| { + match &mount_point.fstype { + mountinfo::FsType::Other(fsstring) => match fsstring.as_str() { + "cifs" => { + true + }, + _ => false + }, + _ => false + } + }); + + println!("Scanning for hanging mounts"); + for mount_point in relevant_mounts { + let path = mount_point.path.to_owned(); + let fstype = match &mount_point.fstype { + mountinfo::FsType::Other(fsstring) => fsstring, + _ => "" + }; + let what = &mount_point.what; + println!("Processing {fstype} @ {path:?} from {what}"); + process_mount(fstype, what, path); + + } +} + +fn process_mount(fstype: &str, what: &String, path: PathBuf) { + match fstype { + "cifs" => { + let path_parts = what.replace("//","/"); + let host = path_parts.split("/").nth(1).unwrap(); + println!("Checking ping to host {host}"); + let ips = lookup_host(host).unwrap(); + let ip = ips.first().unwrap(); + println!("Using ip {ip:?}"); + match ping::ping(ip.to_owned(),Some(Duration::from_millis(100)),Some(10),None, None, None) { + Ok(_) => { + println!("Ping ok, proceeding") + }, + Err(err) => { + println!("Ping failed with errror {err:?} -> unmount"); + remove_mount(path.as_os_str()); + }, + } + }, + _ => {} + } + + + let timeout = Duration::from_millis(500); + println!("Checking file access timeout {timeout:?}"); + let (sender, receiver) = mpsc::channel(); + let path_copy = path.clone(); + thread::spawn(move || { + match fs::read_dir(path_copy) { + Ok(_) => { + match sender.send(()){ + Ok(_) => {}, + Err(err) => { + println!("Listing succeded, but probably after timeout, ignore me {err:?}") + }, + } + }, + Err(err) => { + println!("Listing failed, probably after timeout, ignore me {err:?}") + }, + } + }); + let read_successful = receiver.recv_timeout(timeout); + match read_successful { + Ok(_) => { + println!("passed, mount still valid") + }, + Err(err) => { + println!("Listing failed with errror {err:?} -> unmount"); + remove_mount(path.as_os_str()); + }, + } +} + +fn remove_mount(path: &OsStr){ + //unmount(path, UnmountFlags::FORCE | UnmountFlags::DETACH).unwrap() +} \ No newline at end of file