From a8a8d27a461e82af3f88774e07906a920f95e63e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Mon, 11 Feb 2013 12:48:08 +0100 Subject: Teach prim_file:set_cwd() to avoid entering non-translatable directories We have decided that we don't want to deal with the compilations of prim_file:get_cwd() returning a binary when the current directory name cannot be translated losslessly to a list (i.e. when the run-time system was started with +fnu and the current directory name contains bytes that are not part of a valid UTF-8 sequence). Therefore, if prim_file:set_cwd() is given a binary as the pathname, we will need to check the binary to make sure it can be translated to a list. We will introduce a new BIF, called prim_file:is_translatable/1, which will check both filename encoding mode, and if it is one of Unicode modes, the binary as well. We don't need to do anything special if prim_file:set_cwd() is passed a list. --- erts/emulator/beam/bif.tab | 1 + 1 file changed, 1 insertion(+) (limited to 'erts/emulator/beam/bif.tab') diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index 4aaf466008..e313188901 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -522,6 +522,7 @@ bif erlang:nif_error/2 bif prim_file:internal_name2native/1 bif prim_file:internal_native2name/1 bif prim_file:internal_normalize_utf8/1 +bif prim_file:is_translatable/1 bif file:native_name_encoding/0 # -- cgit v1.2.3