Retry poll on EINTR/EAGAIN instead of debug printing

src/posix/poll.rs

@@ -24,14 +24,20 @@ fn wait_fd(fd: RawFd, events: PollFlags, timeout: Duration) -> io::Result<()> {
     use nix::errno::Errno::{EIO, EPIPE};
 
     let mut fd = PollFd::new(fd, events);
-
-    let wait = match poll_clamped(&mut fd, timeout) {
-        Ok(r) => r,
-        Err(e) => {
-            dbg!(e);
-            return Err(io::Error::from(crate::Error::from(e)));
-        }
-    };
+    let end = std::time::Instant::now() + timeout;
+    let wait;
+    loop {
+        wait = match poll_clamped(&mut fd, end - std::time::Instant::now()) {
+            Ok(r) => r,
+            Err(nix::Error::EINTR) => continue,
+            Err(nix::Error::EAGAIN) => continue,
+            Err(e) => {
+                dbg!(e);
+                return Err(io::Error::from(crate::Error::from(e)));
+            }
+        };
+        break;
+    }
     // All errors generated by poll or ppoll are already caught by the nix wrapper around libc, so
     // here we only need to check if there's at least 1 event
     if wait != 1 {