windows - Create a directory and get the handle by issuing one IRP -

when create file createfile, file created , handle.
createdirectory doesn't return directory's handle.

i'd handle when create directory.
want handle issuing 1 i/o request packet.

so, 'do createdirectory, createfile file_flag_backup_semantics.' won't answer.
issue 2 irps file system.

is there api can use in usermode(win32 api)?

nt can this, win32 doesn't expose it. need use nt apis this. ntcreatefile, specifically. should follow same parameters of zwcreatefile.

here's illustrative example (hacked in hurry inside web form -- ymmv):

handle createdirectoryandgethandle(pwstr pszfilename) {     ntstatus status;     unicode_string filename;     handle directoryhandle;     io_status_block iostatus;     object_attributes objectattributes;      rtlinitunicodestring(&filename, pszfilename);     initializeobjectattributes(&objectatributes, &filename, 0, null, null);      status = ntcreatefile(&directoryhandle,                           generic_read | generic_write,                           &objectattributes,                           &iostatus,                           file_attribute_normal,                           file_share_read | file_share_write | file_share_delete,                           file_create,                           file_directory_file,                           null,                           0);      if (nt_success(status))     {        return directoryhandle;     }     else     {        setlasterror(rtlntstatustodoserror(status));        return invalid_handle_value;     } } 

some things note...

• nt paths have different conventions win32 paths... might have sanitize path.

• when talking handles, nt apis deal null rather invalid_handle_value.

• i didn't here, changing initializeobjectattributes call can interesting things, create relative directory handle. of course flags i've put in here might want change. consult documentation and/or web best results.