From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Mon,  2 Apr 2012 17:57:40 +0000
From: sl@9front.org
To: 9fans@9fans.net
Message-ID: <f82299da5b030d9ca8914dae96b0ea5d@sp.nv>
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Subject: Re: [9fans] SSHv2
Topicbox-Message-UUID: 74b1bf30-ead7-11e9-9d60-3106f5b1d025

> While it is possible to get it confused with keys already
> stored in factotum (the reason the -z option is there), in
> this particular case, the "unknown role verify" from factotum
> seems to suggest it's talking to the old factotum.

You're right.

I forgot that 9front starts a factotum that was rolled into the
kernel build, quite separate from the userland auth/factotum that
exists on the system. This at least makes the observed results
sensible. The running kernel was not built with nfactotum, while
I as launching nfactotum manually from the command line.

But now that I experiment, I find that I have a problem with nfactotum:

term% auth/factotum -D
<-5- Tversion tag 65535 msize 8216 version '9P2000'
-5-> Rversion tag 65535 msize 8216 version '9P2000'
<-5- Tauth tag 42 afid 706 uname sl aname
-5-> Rerror tag 42 ename auth/factotum: authentication not required
<-5- Tattach tag 42 fid 706 afid -1 uname sl aname
-5-> Rattach tag 42 qid (0000000000000000 0 d)

term% cpu -h sp -u sl
<-5- Twalk tag 42 fid 706 newfid 837 nwname 2 0:factotum 1:rpc
-5-> Rwalk tag 42 nwqid 2 0:(0000000000000001 0 d) 1:(0000000000000002 0 )
<-5- Topen tag 42 fid 837 mode 2
fid mode is 0x2
-5-> Ropen tag 42 qid (0000000000000002 0 ) iounit 0
<-5- Twrite tag 42 fid 837 offset 0 count 38 'start proto=p9any role=client  user=sl'
-5-> Rwrite tag 42 count 38
<-5- Tread tag 42 fid 837 offset 38 count 4096
-5-> Rread tag 42 count 2 'ok'
<-5- Twrite tag 42 fid 837 offset 40 count 5 'read '
-5-> Rwrite tag 42 count 5
<-5- Tread tag 42 fid 837 offset 45 count 4096
-5-> Rread tag 42 count 40 'phase in state 'read offer' want 'write''
<-5- Twrite tag 42 fid 837 offset 85 count 6 'write '
-5-> Rwrite tag 42 count 6
<-5- Tread tag 42 fid 837 offset 91 count 4096
-5-> Rread tag 42 count 13 'toosmall 4096'
<-5- Twrite tag 42 fid 837 offset 104 count 15 '77726974 65207039 736b3140 6e7600'
-5-> Rwrite tag 42 count 15
<-5- Tread tag 42 fid 837 offset 119 count 4096
-5-> Rread tag 42 count 2 'ok'
<-5- Twrite tag 42 fid 837 offset 121 count 5 'read '
-5-> Rwrite tag 42 count 5
<-5- Tread tag 42 fid 837 offset 126 count 4096
-5-> Rread tag 42 count 57 'needkey user=sl role=client proto=p9sk1 dom=nv !password?'

!Adding key: user=sl role=client proto=p9sk1 dom=nv
password:
!
<-5- Twalk tag 42 fid 706 newfid 850 nwname 2 0:factotum 1:ctl
-5-> Rwalk tag 42 nwqid 2 0:(0000000000000001 0 d) 1:(0000000000000007 0 )
<-5- Topen tag 42 fid 850 mode 2
fid mode is 0x2
-5-> Ropen tag 42 qid (0000000000000007 0 ) iounit 0
<-5- Twrite tag 42 fid 850 offset 0 count 64 'key user=sl role=client proto=p9sk1 dom=nv !password=xxxxxxx
'
-5-> Rwrite tag 42 count 64
<-5- Tread tag 42 fid 850 offset 64 count 1024
-5-> Rread tag 42 count 54 'key dom=nv proto=p9sk1 role=client user=sl !password?
'
<-5- Tclunk tag 42 fid 850
-5-> Rclunk tag 42
<-5- Twrite tag 42 fid 837 offset 183 count 5 'read '
-5-> Rwrite tag 42 count 5
<-5- Tread tag 42 fid 837 offset 188 count 4096
-5-> Rread tag 42 count 12 '6f6b2070 39736b31 206e7600'
<-5- Twrite tag 42 fid 837 offset 200 count 5 'read '
-5-> Rwrite tag 42 count 5
<-5- Tread tag 42 fid 837 offset 205 count 4096
-5-> Rread tag 42 count 11 '6f6b2098 10cb0d4c 932e7a'
<-5- Twrite tag 42 fid 837 offset 216 count 5 'read '
-5-> Rwrite tag 42 count 5
<-5- Tread tag 42 fid 837 offset 221 count 4096
-5-> Rread tag 42 count 42 'phase in state 'read tickreq' want 'write''
<-5- Twrite tag 42 fid 837 offset 263 count 6 'write '
-5-> Rwrite tag 42 count 6
<-5- Tread tag 42 fid 837 offset 269 count 4096
-5-> Rread tag 42 count 12 'toosmall 141'
<-5- Twrite tag 42 fid 837 offset 281 count 147 '77726974 65200167 6c656e64 61000000 00000000 00000000 00000000 00000000 0000006e 76000000 00000000 00000000 00000000 00000000 00000000 00000000'
-5-> Rwrite tag 42 count 147
<-5- Tread tag 42 fid 837 offset 428 count 4096
-5-> Rread tag 42 count 2 'ok'
<-5- Twrite tag 42 fid 837 offset 430 count 5 'read '
auth/factotum: ioproc alloc

At this point the nfactotum proc blocks indefinitely in Pread.

-sl