From mboxrd@z Thu Jan  1 00:00:00 1970
From: andrey mirtchovski <mirtchov@cpsc.ucalgary.ca>
To: 9fans@cse.psu.edu
Message-ID: <Pine.LNX.4.44.0307171007500.7478-100000@fbsd.cpsc.ucalgary.ca>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Subject: [9fans] bind -c[ab] -- what am I doing wrong?
Date: Thu, 17 Jul 2003 10:13:56 -0600
Topicbox-Message-UUID: fa1a5986-eacb-11e9-9e20-41e7f4b1d025

It is my understanding that a bind() should be "commutative" with respect to
before/after, i.e.:

	bind -cb new old <==> bind -ca old new

why does the following create fail?

	plan9% bind -cb $home/kern/cmd /sys/src/cmd
	plan9% touch /sys/src/cmd/blah		# expected to succeed
	plan9% ls -l $home/kern/cmd/blah
	--rw-rw-r-- M 159 andrey andrey 0 Jul 17 10:06 /usr/andrey/kern/cmd/blah
	plan9% unmount /sys/src/cmd
	plan9% rm $home/kern/cmd/blah
	plan9% bind -ca /sys/src/cmd $home/kern/cmd
	plan9% touch $home/kern/cmd/blah	# expected to succeed
	touch: /usr/andrey/kern/cmd/blah: cannot create: permission denied
	plan9% touch /sys/src/cmd/blah		# expected to fail
	touch: /sys/src/cmd/blah: cannot create: permission denied
	plan9%

who's to blame?