fs/FileSystem: RenameFile() throws exception on error

src/PlaylistFile.cxx

@@ -122,24 +122,6 @@ spl_map_to_fs(const char *name_utf8)
 	return path_fs;
 }
 
-/**
- * Throw an exception for the current errno.
- */
-static void
-ThrowPlaylistErrno()
-{
-	switch (errno) {
-	case ENOENT:
-		throw PlaylistError(PlaylistResult::NO_SUCH_LIST,
-				    "No such playlist");
-
-	default:
-		throw std::system_error(std::error_code(errno,
-							std::system_category()),
-					"Error");
-	}
-}
-
 static bool
 LoadPlaylistFileInfo(PlaylistInfo &info,
 		     const Path parent_path_fs,
@@ -392,8 +374,15 @@ spl_rename_internal(Path from_path_fs, Path to_path_fs)
 		throw PlaylistError(PlaylistResult::LIST_EXISTS,
 				    "Playlist exists already");
 
-	if (!RenameFile(from_path_fs, to_path_fs))
-		ThrowPlaylistErrno();
+	try {
+		RenameFile(from_path_fs, to_path_fs);
+	} catch (const std::system_error &e) {
+		if (IsPathNotFound(e))
+			throw PlaylistError(PlaylistResult::NO_SUCH_LIST,
+					    "No such playlist");
+		else
+			throw;
+	}
 
 	idle_add(IDLE_STORED_PLAYLIST);
 }

src/fs/FileSystem.cxx

@@ -26,6 +26,19 @@
 #include <errno.h>
 #include <fcntl.h>
 
+void
+RenameFile(Path oldpath, Path newpath)
+{
+#ifdef WIN32
+	if (!MoveFileEx(oldpath.c_str(), newpath.c_str(),
+			MOVEFILE_REPLACE_EXISTING))
+		throw MakeLastError("Failed to rename file");
+#else
+	if (rename(oldpath.c_str(), newpath.c_str()) < 0)
+		throw MakeErrno("Failed to rename file");
+#endif
+}
+
 AllocatedPath
 ReadLink(Path path)
 {

src/fs/FileSystem.hxx

@@ -63,18 +63,13 @@ OpenFile(Path file, int flags, int mode)
 #endif
 }
 
-/**
+/*
  * Wrapper for rename() that uses #Path names.
+ *
+ * Throws std::system_error on error.
  */
-static inline bool
-RenameFile(Path oldpath, Path newpath)
-{
-#ifdef WIN32
-	return _trename(oldpath.c_str(), newpath.c_str()) == 0;
-#else
-	return rename(oldpath.c_str(), newpath.c_str()) == 0;
-#endif
-}
+void
+RenameFile(Path oldpath, Path newpath);
 
 #ifndef WIN32