selinux-policy/refpolicy/policy/mls

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# Copyright (C) 2005 Tresys Technology, LLC
ifdef(`enable_mls',`
#
# Define sensitivities
#
# Each sensitivity has a name and zero or more aliases.
#
sensitivity s0;
sensitivity s1;
sensitivity s2;
sensitivity s3;
sensitivity s4;
sensitivity s5;
sensitivity s6;
sensitivity s7;
sensitivity s8;
sensitivity s9;
#
# Define the ordering of the sensitivity levels (least to greatest)
#
dominance { s0 s1 s2 s3 s4 s5 s6 s7 s8 s9 }
#
# Define the categories
#
# Each category has a name and zero or more aliases.
#
category c0;
category c1;
category c2;
category c3;
category c4;
category c5;
category c6;
category c7;
category c8;
category c9;
category c10;
category c11;
category c12;
category c13;
category c14;
category c15;
category c16;
category c17;
category c18;
category c19;
category c20;
category c21;
category c22;
category c23;
category c24;
category c25;
category c26;
category c27;
category c28;
category c29;
category c30;
category c31;
category c32;
category c33;
category c34;
category c35;
category c36;
category c37;
category c38;
category c39;
category c40;
category c41;
category c42;
category c43;
category c44;
category c45;
category c46;
category c47;
category c48;
category c49;
category c50;
category c51;
category c52;
category c53;
category c54;
category c55;
category c56;
category c57;
category c58;
category c59;
category c60;
category c61;
category c62;
category c63;
category c64;
category c65;
category c66;
category c67;
category c68;
category c69;
category c70;
category c71;
category c72;
category c73;
category c74;
category c75;
category c76;
category c77;
category c78;
category c79;
category c80;
category c81;
category c82;
category c83;
category c84;
category c85;
category c86;
category c87;
category c88;
category c89;
category c90;
category c91;
category c92;
category c93;
category c94;
category c95;
category c96;
category c97;
category c98;
category c99;
category c100;
category c101;
category c102;
category c103;
category c104;
category c105;
category c106;
category c107;
category c108;
category c109;
category c110;
category c111;
category c112;
category c113;
category c114;
category c115;
category c116;
category c117;
category c118;
category c119;
category c120;
category c121;
category c122;
category c123;
category c124;
category c125;
category c126;
category c127;
#
# Each MLS level specifies a sensitivity and zero or more categories which may
# be associated with that sensitivity.
#
level s0:c0.c127;
level s1:c0.c127;
level s2:c0.c127;
level s3:c0.c127;
level s4:c0.c127;
level s5:c0.c127;
level s6:c0.c127;
level s7:c0.c127;
level s8:c0.c127;
level s9:c0.c127;
#
# 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 relabling subject 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 } { write create setattr relabelfrom append unlink link rename mounton }
(( l1 eq l2 ) or
(( t1 == mlsfilewritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsfilewrite ) or
( t2 == mlstrustedobject ));
# the "ranged" file "write" ops
mlsconstrain { dir chr_file blk_file sock_file } { write create setattr relabelfrom append unlink link rename mounton }
((( l1 dom l2 ) and ( l1 domby h2 )) or
(( t1 == mlsfilewritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsfilewrite ) or
( t2 == mlstrustedobject ));
mlsconstrain dir { add_name remove_name reparent rmdir }
((( 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 { execute_no_trans entrypoint }
# the file upgrade/downgrade rule
mlsvalidatetrans { 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 relabling subject 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 relabling subject 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" ops (note that the we check 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 recvfrom recv_msg }
(( l1 dom l2 ) or
(( t1 == mlsnetreadtoclr ) and ( h1 dom l2 )) or
( t1 == mlsnetread ));
mlsconstrain { tcp_socket unix_stream_socket } acceptfrom
(( 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 } { setattr relabelfrom connect setopt shutdown }
((( l1 dom l2 ) and ( l1 domby h2 )) or
(( t1 == mlsnetwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsnetwrite ));
mlsconstrain { tcp_socket unix_stream_socket } { connectto newconn }
((( l1 dom l2 ) and ( l1 domby h2 )) or
(( t1 == mlsnetwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsnetwrite ));
# 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 write create lock append bind sendto send_msg name_bind }
#
# { tcp_socket udp_socket rawip_socket } node_bind
#
# { netlink_route_socket netlink_firewall_socket netlink_tcpdiag_socket netlink_xfrm_socket netlink_audit_socket netlink_ip6fw_socket } nlmsg_write
#
#
# 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
#
# these access vectors have no MLS restrictions
# fd use
#
# MLS policy for the node class
#
# these access vectors have no MLS restrictions
# node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send enforce_dest }
#
# MLS policy for the netif class
#
# these access vectors have no MLS restrictions
# netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send enforce_dest }
#
# MLS policy for the process class
#
# new process labels must be dominated by the relabling subject clearance and
# sensitivity level changes require privilege
mlsconstrain process { transition 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}
#
# 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 ));
# 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 == 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 == 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 == 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 == 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
#
# the xinput "read" ops (implicit single level)
mlsconstrain xinput { lookup getattr mousemotion }
(( l1 dom l2 ) or
(( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or
( t1 == mlsxwinread ));
# the xinput "write" ops (implicit single level)
mlsconstrain xinput { setattr setfocus warppointer activegrab passivegrab ungrab bell relabelinput }
(( l1 eq l2 ) or
(( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsxwinwrite ));
#
# MLS policy for the xserver class
#
# the xserver "read" ops (implicit single level)
mlsconstrain xserver { gethostlist getfontpath getattr screensaver }
(( l1 dom l2 ) or
(( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or
( t1 == mlsxwinread ));
# the xserver "write" ops (implicit single level)
mlsconstrain xserver { sethostlist setfontpath grab ungrab screensaver }
(( l1 eq l2 ) or
(( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsxwinwrite ));
#
# MLS policy for the xextension class
#
# the xextension "read" ops (implicit single level)
mlsconstrain xextension query
(( l1 dom l2 ) or
(( t1 == mlsxwinreadtoclr ) and ( h1 dom l2 )) or
( t1 == mlsxwinread ));
# the xextension "write" ops (implicit single level)
mlsconstrain xextension use
(( l1 eq l2 ) or
(( t1 == mlsxwinwritetoclr ) and ( h1 dom l2 ) and ( l1 domby l2 )) or
( t1 == mlsxwinwrite ));
#
# 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
#
# these access vectors have no MLS restrictions
# association { sendto recvfrom }
attribute mlsfileread;
attribute mlsfilereadtoclr;
attribute mlsfilewrite;
attribute mlsfilewritetoclr;
attribute mlsfileupgrade;
attribute mlsfiledowngrade;
attribute mlsnetread;
attribute mlsnetreadtoclr;
attribute mlsnetwrite;
attribute mlsnetwritetoclr;
attribute mlsnetupgrade;
attribute mlsnetdowngrade;
attribute mlsnetbindall;
attribute mlsipcread;
attribute mlsipcreadtoclr;
attribute mlsipcwrite;
attribute mlsipcwritetoclr;
attribute mlsprocread;
attribute mlsprocreadtoclr;
attribute mlsprocwrite;
attribute mlsprocwritetoclr;
attribute mlsprocsetsl;
attribute mlsxwinread;
attribute mlsxwinreadtoclr;
attribute mlsxwinwrite;
attribute mlsxwinwritetoclr;
attribute mlsxwinupgrade;
attribute mlsxwindowngrade;
attribute mlstrustedobject;
attribute privrangetrans;
attribute mlsrangetrans;
') dnl end enable_mls