permissions for remotely created directories
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NEW_DIRECTORY_PERMS,
Pass a long as a parameter, containing the value of the permissions that will
be assigned to newly created directories on the remote server. The default value is
0755, but any valid value can be used. The only protocols that can use
this are sftp://, scp://, and file://.
SFTP, SCP and FILE
Added in 7.16.4
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.