From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <cf910ecdcdb381cf23edcdd19afe22bb@felloff.net>
Date: Thu,  2 Jan 2014 22:41:49 +0100
From: cinap_lenrek@felloff.net
To: 9fans@9fans.net
In-Reply-To: <485d71a18a3e7bfe4849015183f99f06@brasstown.quanstro.net>
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Subject: Re: [9fans] devproc noteid changing for none
Topicbox-Message-UUID: ab47861e-ead8-11e9-9d60-3106f5b1d025

thats because cat tries to open the noteid file of
your rc shell (running as none). and not the noteid
file of its own process (cat).

static void
nonone(Proc *p)
{
	if(p == up)
		return;
	if(strcmp(up->user, "none") != 0)
		return;
	if(iseve())
		return;
	error(Eperm);
}

nonone() is always ok for p == up. in your case, p != up
so it fails (as expected).

--
cinap