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 relabeling 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 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 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 relabeling 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 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 recvfrom 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 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 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 } # # { 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 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 dom l2 ) and ( l1 domby h2 )); # these access vectors have no MLS restrictions # { netif node } { enforce_dest } # # MLS policy for the process class # # new process labels must be dominated by the relabeling subject 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 } # # 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 mlsnetrecvall; 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