[9fans] namespace construction

[arisawa@ar.aichi-u.ac.jp]

Hello,

I have two questions on namespace construction.

1st:

Let alice executes:

void
main(int argc, char *argv[])
{
	rfork(RFCNAMEG);
	bind("#c", "/dev", MAFTER);
	execute("/boot/factotum", "factotum -n");
	print_owner("/mnt/factotum/ctl")
}

where execute() is fork + exec + wait
and print_owner prints file owner.

then the program will print "alice"
however if bind is commented out, it print "none"
Is this a specification ?


2nd:

we will find the line:
                 ai = fauth_proxy(afd, rpc, amount_getkey, "proto=p9any 
role=client");
in /sys/src/libauth/newns.c
note that user name is not specified here.
this can cause unexpected result.
for example, let factotum key for alice is:
	key proto=p9sk1 dom=aichi-u.ac.jp user=alice !password?
	key proto=p9sk1 dom=aichi-u.ac.jp user=bob !password?
then fauth_proxy will always get alice's key and constructs namespace
for alice even if alice want to be bob.
another example is:
if alice puts factotum keys into secstore
	key proto=p9sk1 dom=aichi-u.ac.jp user=bob !password?
	key proto=p9sk1 dom=aichi-u.ac.jp user=alice !password?
then alice will surprise to find that the namespace is not for alice.
why user is not specified in fauth_proxy ?

Kenji Arisawa