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-rw-r--r--erts/preloaded/src/prim_file.erl23
1 files changed, 18 insertions, 5 deletions
diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl
index 27e7640b7e..305abb8b0a 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -152,7 +152,8 @@
-export([internal_name2native/1,
internal_native2name/1,
- internal_normalize_utf8/1]).
+ internal_normalize_utf8/1,
+ is_translatable/1]).
-type prim_file_name() :: string() | unicode:unicode_binary().
-type prim_file_name_error() :: 'error' | 'ignore' | 'warning'.
@@ -173,6 +174,11 @@ internal_native2name(_) ->
internal_normalize_utf8(_) ->
erlang:nif_error(undefined).
+-spec is_translatable(prim_file_name()) -> boolean().
+
+is_translatable(_) ->
+ erlang:nif_error(undefined).
+
%%% End of BIFs
%%%-----------------------------------------------------------------
@@ -671,10 +677,17 @@ set_cwd(Dir) ->
set_cwd(Port, Dir) when is_port(Port) ->
set_cwd_int(Port, Dir).
-set_cwd_int(Port, Dir) ->
- %% Dir is now either a string or an EXIT tuple.
- %% An EXIT tuple will fail in the following catch.
- drv_command(Port, [?FILE_CHDIR, pathname(Dir)]).
+set_cwd_int(Port, Dir) when is_binary(Dir) ->
+ case prim_file:is_translatable(Dir) of
+ false ->
+ {error, no_translation};
+ true ->
+ drv_command(Port, [?FILE_CHDIR, pathname(Dir)])
+ end;
+set_cwd_int(Port, Dir) when is_list(Dir) ->
+ drv_command(Port, [?FILE_CHDIR, pathname(Dir)]);
+set_cwd_int(_, _) ->
+ {error, badarg}.