postfix, procmail and SELinux - No Go

[Marc Schwartz (via MN)]

On Mon, 2006-06-26 at 12:31 +0100, Paul Howarth wrote: 
> Marc Schwartz wrote:
> > After loading the updated modules, you'll need to do:
> >>
> >> # restorecon -rv /var/dcc
> > 
> > Done and new mydcc policy installed:
> > 
> > # semodule -l
> > amavis  1.0.4
> > clamav  1.0.1
> > dcc     1.0.0
> > myclamav        0.1.1
> > mydcc   0.1.6
> > mypostfix       0.1.0
> > mypyzor 0.2.1
> > myspamassassin  0.1.1
> > procmail        0.5.4
> > pyzor   1.0.1
> > razor   1.0.0
> > 
> > 
> > New avc's:
> > 
> > type=AVC msg=audit(1151269000.770:5837): avc:  denied  { search } for  pid=23000 comm="dccproc" name="dcc" dev=dm-1 ino=58510 scontext=system_u:system_r:spamd_t:s0 tcontext=system_u:object_r:dcc_var_t:s0 tclass=dir
> > type=SYSCALL msg=audit(1151269000.770:5837): arch=40000003 syscall=12 success=yes exit=0 a0=bfdb1202 a1=0 a2=4891eff4 a3=37 items=1 pid=23000 auid=4294967295 uid=500 gid=0 euid=500 suid=0 fsuid=500 egid=0 sgid=500 fsgid=0 tty=(none) comm="dccproc" exe="/usr/local/bin/dccproc" subj=system_u:system_r:spamd_t:s0
> > type=CWD msg=audit(1151269000.770:5837):  cwd="/"
> > type=PATH msg=audit(1151269000.770:5837): item=0 name="/var/dcc" inode=58510 dev=fd:01 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:dcc_var_t:s0
> 
> dccproc is still running in the spamd_t domain; for some reason the 
> domain transition hasn't happened.
> 
> Can you check that the dccproc being invoked by spamassassin is the one 
> in /usr/local/bin and that its context type is dcc_client_exec_t?

dccproc only exists in two locations:

  /var/dcc/build/dcc/dccproc/dccproc

and 

  /usr/local/bin/dccproc

The former is where dcc does it's build each night.


It was:

  user_u:object_r:bin_t 

I ran restorecon on it and now:

  system_u:object_r:dcc_client_exec_t


However, thinking that the build process might change the context, I
manually ran updatedcc via sudo from the CLI.  Sure enough, the context
is back to:

  user_u:object_r:bin_t

So the change in context will occur every night. :-(

Should I add a restorecon to crontab after updatedcc runs?

Also, there is some configuration info here:

  http://www.rhyolite.com/anti-spam/dcc/dcc-tree/INSTALL.html

where some settings (ie. UID) might be apropos here. If something makes
sense to change, let me know.

I will reply to your other mail shortly. I made some changes to the
razor and pyzor configs that will take a bit to write up, but appear to
address the multiple user folder locations.

Thanks,

Marc