#include <stdio.h>
#include <Tt/tt_c.h>

main(int argc, char *argv[])
{
        Tt_message msg;
        Tt_status ttstat;

        if (argc != 3) {
                printf("Usage: %s <mode> <filename>\n", argv[0]);
                exit(1);
        }

        tt_open();
        msg = tt_message_create();
        tt_message_scope_set(msg, TT_SESSION);
        tt_message_session_set(msg, tt_default_session());
        tt_message_class_set(msg, TT_REQUEST);
        tt_message_handler_set(msg, "TtChmod");
        tt_message_address_set(msg, TT_PROCEDURE);
        tt_message_op_set(msg, "Chmod");
        tt_message_arg_add(msg, TT_IN, "string", argv[2]);
        tt_message_arg_add(msg, TT_IN, "string", argv[1]);
        ttstat = tt_message_send(msg);
        if (ttstat != TT_OK) {
                printf("%s\n", tt_status_message((int) ttstat));
                exit(1);
        }
}

@fig:Listing 5. Ttchmod: ToolTalk Client