Skip virtual file systems

Author: ksv1986

src/main.rs

@@ -15,7 +15,7 @@ use std::io::BufReader;
 use std::process;
 
 use stats::Stats;
-use util::{bargraph, iec};
+use util::{bargraph, iec, is_virtual};
 
 const FS_SPEC: usize = 0;
 const FS_FILE: usize = 1;
@@ -48,6 +48,9 @@ fn main() {
         match line {
             Ok(line) => {
                 let fields: Vec<&str> = line.split_whitespace().collect();
+                if !matches.is_present("all") && is_virtual(fields[FS_SPEC]) {
+                    continue;
+                }
                 let statvfs = match statvfs(fields[FS_FILE]) {
                     Ok(s) => s,
                     Err(err) => {

src/util.rs

@@ -46,6 +46,13 @@ pub fn bargraph(mut percent: f64) -> String {
     format!("{}{}", bar1, bar2)
 }
 
+pub fn is_virtual(fs: &str) -> bool {
+    match fs {
+        "devtmpfs" | "portal" | "tmpfs" => true,
+        _ => fs.starts_with("/dev/loop") || fs.starts_with("systemd-"),
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::shorten_lv;