Postpone cloning the db_path

Want access to it after the last init_wal for better errors

firewood/src/db/mod.rs

@@ -541,7 +541,7 @@ impl DB {
         };
 
         // recover from WAL
-        disk_requester.init_wal("wal", db_path);
+        disk_requester.init_wal("wal", &db_path);
 
         // set up the storage layout
 

firewood/src/storage/buffer.rs

@@ -1,6 +1,6 @@
 //! Disk buffer for staging in memory pages and flushing them to disk.
 use std::fmt::Debug;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::rc::Rc;
 use std::sync::Arc;
 use std::{cell::RefCell, collections::HashMap};
@@ -466,9 +466,12 @@ impl DiskBufferRequester {
     }
 
     /// Initialize the WAL.
-    pub fn init_wal(&self, waldir: &str, rootpath: PathBuf) {
+    pub fn init_wal(&self, waldir: &str, rootpath: &Path) {
         self.sender
-            .blocking_send(BufferCmd::InitWAL(rootpath, waldir.to_string()))
+            .blocking_send(BufferCmd::InitWAL(
+                rootpath.to_path_buf(),
+                waldir.to_string(),
+            ))
             .map_err(StoreError::Send)
             .ok();
     }
@@ -526,7 +529,7 @@ mod tests {
         let state_path = file::touch_dir("state", &root_db_path).unwrap();
         assert!(reset);
         // create a new wal directory on top of root_db_fd
-        disk_requester.init_wal("wal", root_db_path);
+        disk_requester.init_wal("wal", &root_db_path);
 
         // create a new state cache which tracks on disk state.
         let state_cache = Rc::new(