w32: Support file names longer than MAX_PATH.

* src/sysutils.c (any8bitchar): Remove.
(_gpgrt_fname_to_wchar): New.
(_gpgrt_mkdir): Use instead of plain utf8 conversion.
(_gpgrt_access): Reimplement using GetFileAttributesW so that long
files names are supported.
* src/estream.c (_gpgrt_w32_get_last_err_code): New.
(func_file_create_w32): New.
(_gpgrt_fopen): Handle the "sysopen" mode flag.  Support mapping of
/dev/null.
(_gpgrt_freopen): Support mapping of /dev/null.
* src/w32-gettext.c (load_domain): Allow long file names.

* src/visibility.c (gpgrt_free_wchar): Make function public.
(gpgrt_fname_to_wchar): Ditto.
(gpgrt_utf8_to_wchar): Ditto.
(gpgrt_wchar_to_utf8): Ditto.
* src/w32-add.h  (gpgrt_free_wchar): New prototype.
(gpgrt_fname_to_wchar): Ditto.
(gpgrt_utf8_to_wchar): Ditto.
(gpgrt_wchar_to_utf8): Ditto.
* src/gpg-error.def.in: Add them here too.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/visibility.c b/src/visibility.c
index 03a6c45..fdf4805 100644
--- a/src/visibility.c
+++ b/src/visibility.c
@@ -1241,6 +1241,31 @@ gpgrt_absfnameconcat (const char *first, ... )
  * specific function despite that they are technically not needed.  */
 #ifdef HAVE_W32_SYSTEM
 
+void
+gpgrt_free_wchar (wchar_t *wstring)
+{
+  if (wstring)
+    _gpgrt_free_wchar (wstring);
+}
+
+wchar_t *
+gpgrt_fname_to_wchar (const char *fname)
+{
+  return _gpgrt_fname_to_wchar (fname);
+}
+
+wchar_t *
+gpgrt_utf8_to_wchar (const char *string)
+{
+  return _gpgrt_utf8_to_wchar (string);
+}
+
+char *
+gpgrt_wchar_to_utf8 (const wchar_t *string)
+{
+  return _gpgrt_wchar_to_utf8 (string, (size_t)(-1));
+}
+
 char *
 gpgrt_w32_reg_query_string (const char *root, const char *dir, const char *name)
 {