pub fn add_watch(fd: &Fd, path: &str, mask: u32) -> Result<i32, CoreError>Expand description
Add a watch to an existing inotify instance.
§Arguments
fd- The inotify file descriptor.path- Path to the file or directory to watch.mask- Events to monitor (e.g.,MODIFY_MASK).
§Errors
Returns CoreError if inotify_add_watch fails or if the path contains a NUL byte.
Examples found in repository?
examples/watch_temp.rs (line 13)
5fn main() -> Result<(), Box<dyn std::error::Error>> {
6 let mut reactor = Reactor::new()?;
7 let (inotify_fd, inotify_token) = reactor.setup_inotify()?;
8
9 let temp_dir = std::env::temp_dir();
10 let temp_dir_str = temp_dir.to_string_lossy().into_owned();
11
12 println!("Watching {} for modifications...", temp_dir_str);
13 add_watch(&inotify_fd, &temp_dir_str, MODIFY_MASK)?;
14
15 let mut events = Vec::new();
16 // Monitor for 10 seconds
17 let start = std::time::Instant::now();
18 while start.elapsed() < Duration::from_secs(10) {
19 let n = reactor.wait(&mut events, 64, 1000)?;
20 if n > 0 {
21 for ev in &events {
22 if ev.token == inotify_token {
23 let in_events = read_events(&inotify_fd)?;
24 for ie in in_events {
25 if let Some(name) = ie.name {
26 println!("File modified: {}", String::from_utf8_lossy(&name));
27 } else {
28 println!("Directory modified (wd={})", ie.wd);
29 }
30 }
31 }
32 }
33 }
34 }
35
36 println!("Finished watching.");
37 Ok(())
38}