[patch -mm 1/5] mqueue namespace : add struct mq_namespace

[sukadev at us.ibm.com]

Cedric Le Goater [clg at fr.ibm.com] wrote:
| > I think you and Eric (and I) are disagreeing about those limitations.
| > You take it for granted that a sibling pidns is off limits for signals.
| > But the signal wasn't sent using a pid, but using a file (in SIGIO
| > case).  So since the fs was shared, the signal should be sent.  An
| > event happened, and the receiver wants to know about it.
| 
| seen that way I agree. 
| 
| si_code is set to SI_MESGQ, but what do we put in si_pid ? 0 ?
| 
| we could use the si_errno to pass extra info, like the sending process 
| lives in a // world ...

Does the receiver need to know that sender is in a // world ? 

| 
| C.