ifdef(`enable_mls',`

#

# Define sensitivities 

#

# Domination of sensitivities is in increasin

# numerical order, with s0 being the lowest

gen_sens(mls_num_sens)

#

# Define the categories

#

# Generate declarations

gen_cats(mls_num_cats)

#

# Each MLS level specifies a sensitivity and zero or more categories which may

# be associated with that sensitivity.

#

# Generate levels from all sensitivities

# with all categories

gen_levels(mls_num_sens,mls_num_cats)

#

# Define the MLS policy

#

# mlsconstrain class_set perm_set expression ;

#

# mlsvalidatetrans class_set expression ;

#

# expression : ( expression )

#	     | not expression

#	     | expression and expression

#	     | expression or expression

#	     | u1 op u2

#	     | r1 role_mls_op r2

#	     | t1 op t2

#	     | l1 role_mls_op l2

#	     | l1 role_mls_op h2

#	     | h1 role_mls_op l2

#	     | h1 role_mls_op h2

#	     | l1 role_mls_op h1

#	     | l2 role_mls_op h2

#	     | u1 op names

#	     | u2 op names

#	     | r1 op names

#	     | r2 op names

#	     | t1 op names

#	     | t2 op names

#	     | u3 op names (NOTE: this is only available for mlsvalidatetrans)

#	     | r3 op names (NOTE: this is only available for mlsvalidatetrans)

#	     | t3 op names (NOTE: this is only available for mlsvalidatetrans)

#

# op : == | !=

# role_mls_op : == | != | eq | dom | domby | incomp

#

# names : name | { name_list }

# name_list : name | name_list name

#

#

# MLS policy for the file classes

#

# make sure these file classes are "single level"

mlsconstrain { file lnk_file fifo_file } { create relabelto }

	( l2 eq h2 );

# new file labels must be dominated by the relabeling subjects clearance

mlsconstrain { dir file lnk_file chr_file blk_file sock_file fifo_file } relabelto

	( h1 dom h2 );

# the file "read" ops (note the check is dominance of the low level)

mlsconstrain { dir file lnk_file chr_file blk_file sock_file fifo_file } { read getattr execute }

	(( l1 dom l2 ) or

	 (( t1 == mlsfilereadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsfileread ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain dir search

	(( l1 dom l2 ) or

	 (( t1 == mlsfilereadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsfileread ) or

	 ( t2 == mlstrustedobject ));

# the "single level" file "write" ops

mlsconstrain { file lnk_file fifo_file dir chr_file blk_file sock_file } { write create setattr relabelfrom append unlink link rename mounton }

	(( l1 eq l2 ) or

	 (( t1 == mlsfilewritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsfilewriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsfilewrite ) or

	 ( t2 == mlstrustedobject ));

# Directory "write" ops

mlsconstrain dir { add_name remove_name reparent rmdir }

	(( l1 eq l2 ) or

	 (( t1 == mlsfilewriteinrange ) and ( l1 dom l2 ) and ( l1 domby h2 )) or

	 (( t1 == mlsfilewritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsfilewrite ) or

	 ( t2 == mlstrustedobject ));

# these access vectors have no MLS restrictions

# { dir file lnk_file chr_file blk_file sock_file fifo_file } { ioctl lock swapon quotaon }

#

# { file chr_file } { execute_no_trans entrypoint execmod }

# the file upgrade/downgrade rule

mlsvalidatetrans { dir file lnk_file chr_file blk_file sock_file fifo_file }

	((( l1 eq l2 ) or

	  (( t3 == mlsfileupgrade ) and ( l1 domby l2 )) or

	  (( t3 == mlsfiledowngrade ) and ( l1 dom l2 )) or

	  (( t3 == mlsfiledowngrade ) and ( l1 incomp l2 ))) and

	 (( h1 eq h2 ) or

	  (( t3 == mlsfileupgrade ) and ( h1 domby h2 )) or

	  (( t3 == mlsfiledowngrade ) and ( h1 dom h2 )) or

	  (( t3 == mlsfiledowngrade ) and ( h1 incomp h2 ))));

# create can also require the upgrade/downgrade checks if the creating process

# has used setfscreate (note that both the high and low level of the object

# default to the process sensitivity level)

mlsconstrain { dir file lnk_file chr_file blk_file sock_file fifo_file } create

	((( l1 eq l2 ) or

	  (( t1 == mlsfileupgrade ) and ( l1 domby l2 )) or

	  (( t1 == mlsfiledowngrade ) and ( l1 dom l2 )) or

	  (( t1 == mlsfiledowngrade ) and ( l1 incomp l2 ))) and

	 (( l1 eq h2 ) or

	  (( t1 == mlsfileupgrade ) and ( l1 domby h2 )) or

	  (( t1 == mlsfiledowngrade ) and ( l1 dom h2 )) or

	  (( t1 == mlsfiledowngrade ) and ( l1 incomp h2 ))));

#

# MLS policy for the filesystem class

#

# new filesystem labels must be dominated by the relabeling subjects clearance

mlsconstrain filesystem relabelto

	( h1 dom h2 );

# the filesystem "read" ops (implicit single level)

mlsconstrain filesystem { getattr quotaget }

	(( l1 dom l2 ) or

	 (( t1 == mlsfilereadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsfileread ));

# all the filesystem "write" ops (implicit single level)

mlsconstrain filesystem { mount remount unmount relabelfrom quotamod }

	(( l1 eq l2 ) or

	 (( t1 == mlsfilewritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsfilewrite ));

# these access vectors have no MLS restrictions

# filesystem { transition associate }

#

# MLS policy for the socket classes

#

# new socket labels must be dominated by the relabeling subjects clearance

mlsconstrain { socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_ip6fw_socket netlink_dnrt_socket } relabelto

	( h1 dom h2 );

# the socket "read+write" ops

# (Socket FDs are generally bidirectional, equivalent to open(..., O_RDWR),

# require equal levels for unprivileged subjects, or read *and* write overrides)

mlsconstrain { socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_ip6fw_socket netlink_dnrt_socket } { accept connect }

	(( l1 eq l2 ) or

	 (((( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or

	   ( t1 == mlsnetread )) and

	  ((( t1 == mlsnetwriteranged ) and ( l1 dom l2 ) and ( l1 domby h2 )) or

	   (( t1 == mlsnetwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	   ( t1 == mlsnetwrite ))));

# the socket "read" ops (note the check is dominance of the low level)

mlsconstrain { socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_ip6fw_socket netlink_dnrt_socket } { read getattr listen accept getopt recv_msg }

	(( l1 dom l2 ) or

	 (( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsnetread ));

mlsconstrain { netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_xfrm_socket netlink_audit_socket netlink_ip6fw_socket } nlmsg_read

	(( l1 dom l2 ) or

	 (( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsnetread ));

# the socket "write" ops

mlsconstrain { socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_ip6fw_socket netlink_dnrt_socket } { write setattr relabelfrom connect setopt shutdown }

	(( l1 eq l2 ) or 

	 (( t1 == mlsnetwriteranged ) and ( l1 dom l2 ) and ( l1 domby h2 )) or

	 (( t1 == mlsnetwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsnetwrite ));

# used by netlabel to restrict normal domains to same level connections

mlsconstrain { tcp_socket udp_socket rawip_socket } recvfrom

	(( l1 eq l2 ) or

	 (( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsnetread ));

# these access vectors have no MLS restrictions

# { socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_ip6fw_socket netlink_dnrt_socket } { ioctl create lock append bind sendto send_msg name_bind }

#

# { tcp_socket udp_socket rawip_socket } node_bind

#

# { tcp_socket unix_stream_socket } { connectto newconn acceptfrom }

#

# tcp_socket name_connect

#

# { netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_xfrm_socket netlink_audit_socket netlink_ip6fw_socket } nlmsg_write

#

# netlink_audit_socket { nlmsg_relay nlmsg_readpriv }

#

# netlink_kobject_uevent_socket *

#

#

# MLS policy for the ipc classes

#

# the ipc "read" ops (implicit single level)

mlsconstrain { ipc sem msgq shm } { getattr read unix_read }

	(( l1 dom l2 ) or

	 (( t1 == mlsipcreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsipcread ));

mlsconstrain msg receive

	(( l1 dom l2 ) or

	 (( t1 == mlsipcreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsipcread ));

# the ipc "write" ops (implicit single level)

mlsconstrain { ipc sem msgq shm } { create destroy setattr write unix_write }

	(( l1 eq l2 ) or

	 (( t1 == mlsipcwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsipcwrite ));

mlsconstrain msgq enqueue

	(( l1 eq l2 ) or

	 (( t1 == mlsipcwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsipcwrite ));

mlsconstrain shm lock

	(( l1 eq l2 ) or

	 (( t1 == mlsipcwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsipcwrite ));

mlsconstrain msg send

	(( l1 eq l2 ) or

	 (( t1 == mlsipcwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsipcwrite ));

# these access vectors have no MLS restrictions

# { ipc sem msgq shm } associate

#

# MLS policy for the fd class

#

# No sharing of open file descriptors between levels unless

# the process type is authorized to use fds created by 

# other levels (mlsfduse) or the fd type is authorized to

# shared among levels (mlsfdshare). 

mlsconstrain fd use (

	l1 eq l2

	or t1 == mlsfduse

	or t2 == mlsfdshare

);

#

# MLS policy for the network object classes

#

# the netif/node "read" ops (implicit single level socket doing the read)

#                           (note the check is dominance of the low level)

mlsconstrain { node netif } { tcp_recv udp_recv rawip_recv }

	(( l1 dom l2 ) or ( t1 == mlsnetrecvall ));

# the netif/node "write" ops (implicit single level socket doing the write)

mlsconstrain { netif node } { tcp_send udp_send rawip_send }

	(( l1 eq l2 ) or

	(( t1 == mlsnetwriteranged ) and ( l1 dom l2 ) and ( l1 domby h2 )));

# these access vectors have no MLS restrictions

# node enforce_dest

#

# MLS policy for the process class

#

# new process labels must be dominated by the relabeling subjects clearance

# and sensitivity level changes require privilege

mlsconstrain process transition

	(( h1 dom h2 ) and

	 (( l1 eq l2 ) or ( t1 == mlsprocsetsl ) or

	  (( t1 == privrangetrans ) and ( t2 == mlsrangetrans ))));

mlsconstrain process dyntransition

	(( h1 dom h2 ) and

	 (( l1 eq l2 ) or ( t1 == mlsprocsetsl )));

# all the process "read" ops

mlsconstrain process { getsched getsession getpgid getcap getattr ptrace share }

	(( l1 dom l2 ) or

	 (( t1 == mlsprocreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsprocread ));

# all the process "write" ops (note the check is equality on the low level)

mlsconstrain process { sigkill sigstop signal setsched setpgid setcap setexec setfscreate setcurrent ptrace share }

	(( l1 eq l2 ) or

	 (( t1 == mlsprocwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsprocwrite ));

# these access vectors have no MLS restrictions

# process { fork sigchld signull noatsecure siginh setrlimit rlimitinh execmem execstack execheap }

#

# MLS policy for the security class

#

# these access vectors have no MLS restrictions

# security *

#

# MLS policy for the system class

#

# these access vectors have no MLS restrictions

# system *

#

# MLS policy for the capability class

#

# these access vectors have no MLS restrictions

# capability *

#

# MLS policy for the passwd class

#

# these access vectors have no MLS restrictions

# passwd *

#

# MLS policy for the drawable class

#

# the drawable "read" ops (implicit single level)

mlsconstrain drawable { getattr copy }

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinread ));

# the drawable "write" ops (implicit single level)

mlsconstrain drawable { create destroy draw copy }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the gc class

#

# the gc "read" ops (implicit single level)

mlsconstrain gc getattr

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinread ));

# the gc "write" ops (implicit single level)

mlsconstrain gc { create free setattr }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the window class

#

# the window "read" ops (implicit single level)

mlsconstrain window { listprop getattr enumerate mousemotion inputevent drawevent windowchangeevent windowchangerequest serverchangeevent extensionevent }

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinread ));

# the window "write" ops (implicit single level)

mlsconstrain window { addchild create destroy chstack chproplist chprop setattr setfocus move chselection chparent ctrllife transparent clientcomevent }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ) or

	 ( t2 == mlstrustedobject ));

# these access vectors have no MLS restrictions

# window { map unmap }

#

# MLS policy for the font class

#

# the font "read" ops (implicit single level)

mlsconstrain font { load getattr }

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinread ));

# the font "write" ops (implicit single level)

mlsconstrain font free

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ));

# these access vectors have no MLS restrictions

# font use

#

# MLS policy for the colormap class

#

# the colormap "read" ops (implicit single level)

mlsconstrain colormap { list read getattr }

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinreadcolormap ) or

	 ( t1 == mlsxwinread ));

# the colormap "write" ops (implicit single level)

mlsconstrain colormap { create free install uninstall store setattr }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwritecolormap ) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the property class

#

# the property "read" ops (implicit single level)

mlsconstrain property { read }

	(( l1 dom l2 ) or

	 (( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsxwinreadproperty ) or

	 ( t1 == mlsxwinread ));

# the property "write" ops (implicit single level)

mlsconstrain property { create free write }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwriteproperty ) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the cursor class

#

# the cursor "write" ops (implicit single level)

mlsconstrain cursor { create createglyph free assign setattr }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the xclient class

#

# the xclient "write" ops (implicit single level)

mlsconstrain xclient kill

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the xinput class

#

# these access vectors have no MLS restrictions

# xinput ~{ relabelinput setattr }

# the xinput "write" ops (implicit single level)

mlsconstrain xinput { setattr relabelinput }

	(( l1 eq l2 ) or

	 (( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 ( t1 == mlsxwinwritexinput ) or

	 ( t1 == mlsxwinwrite ));

#

# MLS policy for the xserver class

#

# these access vectors have no MLS restrictions

# xserver *

#

# MLS policy for the xextension class

#

# these access vectors have no MLS restrictions

# xextension { query use }

#

# MLS policy for the pax class

#

# these access vectors have no MLS restrictions

# pax { pageexec emutramp mprotect randmmap randexec segmexec }

#

# MLS policy for the dbus class

#

# these access vectors have no MLS restrictions

# dbus { acquire_svc send_msg }

#

# MLS policy for the nscd class

#

# these access vectors have no MLS restrictions

# nscd { getpwd getgrp gethost getstat admin shmempwd shmemgrp shmemhost }

#

# MLS policy for the association class

#

mlsconstrain association { recvfrom }

	((( l1 dom l2 ) and ( l1 domby h2 )) or

	 (( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsnetread ) or

	 ( t2 == unlabeled_t ));

mlsconstrain association { sendto }

	(( l1 eq l2 ) or

	 (( t1 == mlsnetwriteranged ) and ( l1 dom l2 ) and ( l1 domby h2 )) or

	 ( t2 == unlabeled_t ));

mlsconstrain association { polmatch }

	(( l1 dom l2 ) and ( h1 domby h2 ));

#

# MLS policy for the context class

#

mlsconstrain context translate

	(( h1 dom h2 ) or ( t1 == mlstranslate ));

mlsconstrain context contains

	( h1 dom h2 );

#

# MLS policy for database classes

#

# make sure these database classes are "single level"

mlsconstrain { db_database db_table db_procedure db_column db_blob } { create relabelto }

	( l2 eq h2 );

mlsconstrain { db_tuple } { insert relabelto }

	( l2 eq h2 );

# new database labels must be dominated by the relabeling subjects clearance

mlsconstrain { db_database db_table db_procedure db_column db_tuple db_blob } { relabelto }

	( h1 dom h2 );

# the database "read" ops (note the check is dominance of the low level)

mlsconstrain { db_database } { getattr access get_param }

	(( l1 dom l2 ) or

	 (( t1 == mlsdbreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsdbread ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_table db_column } { getattr use select }

	(( l1 dom l2 ) or

	 (( t1 == mlsdbreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsdbread ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_procedure } { getattr execute }

	(( l1 dom l2 ) or

	 (( t1 == mlsdbreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsdbread ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_blob } { getattr read }

	(( l1 dom l2 ) or

	 (( t1 == mlsdbreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsdbread ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_tuple } { use select }

	(( l1 dom l2 ) or

	 (( t1 == mlsdbreadtoclr ) and ( h1 dom l2 )) or

	 ( t1 == mlsdbread ) or

	 ( t2 == mlstrustedobject ));

# the "single level" file "write" ops

mlsconstrain { db_database } { create drop setattr relabelfrom install_module load_module set_param }

	(( l1 eq l2 ) or

	 (( t1 == mlsdbwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsdbwriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsdbwrite ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_table } { create drop setattr relabelfrom update insert delete lock }

	(( l1 eq l2 ) or

	 (( t1 == mlsdbwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsdbwriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsdbwrite ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_column } { create drop setattr relabelfrom update insert }

	(( l1 eq l2 ) or

	 (( t1 == mlsdbwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsdbwriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsdbwrite ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_blob } { create drop setattr relabelfrom write import export }

	(( l1 eq l2 ) or

	 (( t1 == mlsdbwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsdbwriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsdbwrite ) or

	 ( t2 == mlstrustedobject ));

mlsconstrain { db_tuple } { relabelfrom update insert delete }

	(( l1 eq l2 ) or

	 (( t1 == mlsdbwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or

	 (( t2 == mlsdbwriteinrange ) and ( l1 dom l2 ) and ( h1 domby h2 )) or

	 ( t1 == mlsdbwrite ) or

	 ( t2 == mlstrustedobject ));

# the database upgrade/downgrade rule

mlsvalidatetrans { db_database db_table db_procedure db_column db_tuple db_blob }

	((( l1 eq l2 ) or

	  (( t3 == mlsdbupgrade ) and ( l1 domby l2 )) or

	  (( t3 == mlsdbdowngrade ) and ( l1 dom l2 )) or

	  (( t3 == mlsdbdowngrade ) and ( l1 incomp l2 ))) and

	 (( l1 eq h2 ) or

	  (( t3 == mlsdbupgrade ) and ( h1 domby h2 )) or

	  (( t3 == mlsdbdowngrade ) and ( h1 dom h2 )) or

	  (( t3 == mlsdbdowngrade ) and ( h1 incomp h2 ))));

') dnl end enable_mls