Win32: non-ASCII directory names support in ngx_create_dir(). This makes it possible to create directories under prefix with non-ASCII characters, as well as makes it possible to create directories with non-ASCII characters when using the dav module (ticket #1433). To ensure that the dav module operations are restricted similarly to other file operations (in particular, short names are not allowed), the ngx_win32_check_filename() function is used. It improved to support checking of just dirname, and now can be used to check paths when creating files or directories.

--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -202,7 +202,7 @@ ngx_int_t ngx_close_dir(ngx_dir_t *dir);
 #define ngx_close_dir_n             "FindClose()"
 
 
-#define ngx_create_dir(name, access) CreateDirectory((const char *) name, NULL)
+ngx_int_t ngx_create_dir(u_char *name, ngx_uint_t access);
 #define ngx_create_dir_n            "CreateDirectory()"