Ouch!! I'm somewhat confused with all this things! My main problem is with the msgh_bits field in the header of the message; fortunately, you have give me some insight.
>Well, first, that is not a macro. But you use it only if you want to make a send >right, that's right. Remember what I've said. Using MACH_MSG_TYPE_MAKE_SEND is really >like doing a mach_port_insert_right to create a send right, except that it does that >during the message transfer: you supply it a _receive_ right (the one you created with >mach_port_allocate), and it creates a send right during the message is transfered. >Here, >you should actually do like I said in the paragraph I just quoted: use >MACH_MSG_TYPE_MAKE_SEND >to create a send right, and receive it (as you receive your int), so you can use it >later for >answering. > > Taking into account your advice, my final code is something like that ; err = mach_port_allocate( mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &receive_port ); and filled the msgh_bits field with : my_message.head.msgh_bits = MACH_MSG_TYPE_MAKE_SEND; this appears to have some sense; like what you explain above... it also worked in the expected way. Anycase, I think that some time for repose the ideas and a bit more reading of "kernel principles" is the best I can do now for mach learning. ( I also have read the Mach chapter in Tanenbaum's book "Modern Operating System", first edition, I think ). Thans for the help!! _______________________________________________ Help-hurd mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/help-hurd
