ftpd and PAM

[Paul Howarth <paul city-fan org>]

The PAM config files for vsftpd and prpftpd look like this:

#%PAM-1.0
session    optional     pam_keyinit.so    force revoke
auth       required     pam_listfile.so item=user sense=deny 
file=/etc/vsftpd/ftpusers onerr=succeed
auth       required     pam_shells.so
auth       include      system-auth
account    include      system-auth
session    include      system-auth
session    required     pam_loginuid.so

So it makes sense for ftpd_t to be able to set the login uid and create 
a session keyring:

logging_set_loginuid(ftpd_t)
allow ftpd_t self:key { write search link };


Curiously, I've done this locally but still get this AVC when logging in 
on proftpd, with an open dovecot IMAP session on the same server:

type=AVC msg=audit(1182853960.377:103383): avc:  denied  { link } for 
pid=24601 comm="proftpd" scontext=root:system_r:ftpd_t:s0 
tcontext=root:system_r:dovecot_t:s0 tclass=key

Paul.