From 16edec346498f3a6e32869b78b57c63ca826cc17 Mon Sep 17 00:00:00 2001
From: Stjepan Glavina <stjepang@gmail.com>
Date: Thu, 21 Nov 2019 17:50:30 +0100
Subject: [PATCH] Ignore seek errors in poll_unread

---
 src/fs/file.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/fs/file.rs b/src/fs/file.rs
index f8242811..94e2989b 100644
--- a/src/fs/file.rs
+++ b/src/fs/file.rs
@@ -742,7 +742,10 @@ impl LockGuard<State> {
                 if n > 0 {
                     // Seek `n` bytes backwards. This call should not block because it only changes
                     // the internal offset into the file and doesn't touch the actual file on disk.
-                    (&*self.file).seek(SeekFrom::Current(-(n as i64)))?;
+                    //
+                    // We ignore errors here because special files like `/dev/random` are not
+                    // seekable.
+                    let _ = (&*self.file).seek(SeekFrom::Current(-(n as i64)));
                 }
 
                 // Switch to idle mode.