Fix eio_linux

lib_eio_linux/eio_linux.ml

@@ -600,8 +600,8 @@ end = struct
     | Some fd2 -> Low_level.rename t.fd old_path fd2 new_path
     | None -> raise (Unix.Unix_error (Unix.EXDEV, "rename-dst", new_path))
 
-  let symlink t old_path new_path =
-    Low_level.symlink old_path t.fd new_path
+  let symlink t path ~link_to =
+    Low_level.symlink link_to t.fd path
 
   let pp f t = Fmt.string f (String.escaped t.label)
 

lib_eio_linux/low_level.ml

@@ -452,10 +452,10 @@ let rename old_dir old_path new_dir new_path =
       new_parent new_leaf
   with Unix.Unix_error (code, name, arg) -> raise @@ Err.wrap_fs code name arg
 
-let symlink old_path new_dir new_path =
-  with_parent_dir "renameat-new" new_dir new_path @@ fun new_parent new_leaf ->
+let symlink link_to dir path =
+  with_parent_dir "symlinkat-new" dir path @@ fun parent leaf ->
   try
-    eio_symlinkat old_path new_parent new_leaf
+    eio_symlinkat link_to parent leaf
   with Unix.Unix_error (code, name, arg) -> raise @@ Err.wrap_fs code name arg
 
 let shutdown socket command =

lib_eio_linux/low_level.mli

@@ -151,7 +151,7 @@ val rename : dir_fd -> string -> dir_fd -> string -> unit
 (** [rename old_dir old_path new_dir new_path] renames [old_dir / old_path] as [new_dir / new_path]. *)
 
 val symlink : string -> dir_fd -> string -> unit
-(** [symlink old_path dir new_path] symlinks to [dir / old_path] as [dir / new_path]. *)
+(** [symlink link_to dir path] creates a new symlink at [dir / path] pointing to [link_to]. *)
 
 val pipe : sw:Switch.t -> fd * fd
 (** [pipe ~sw] returns a pair [r, w] with the readable and writeable ends of a new pipe. *)