fix: lock access mode is invalid

Signed-off-by: sisungo <[email protected]>

src/common/fs.rs

@@ -171,7 +171,10 @@ impl LockGuard {
     }
 
     pub fn open(path: impl AsRef<Path>, nonblocking: bool) -> std::io::Result<Self> {
-        let file = std::fs::File::options().create(true).open(path)?;
+        let file = std::fs::File::options()
+            .create(true)
+            .write(true)
+            .open(path)?;
         let flags = if nonblocking {
             nix::fcntl::FlockArg::LockExclusiveNonblock
         } else {