169 lines
6.3 KiB
Plaintext
169 lines
6.3 KiB
Plaintext
ifdef(`enable_mcs',`
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#
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# Define sensitivities
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#
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# Each sensitivity has a name and zero or more aliases.
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#
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# MCS is single-sensitivity.
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#
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sensitivity s0;
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#
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# Define the ordering of the sensitivity levels (least to greatest)
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#
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dominance { s0 }
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#
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# Define the categories
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#
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# Each category has a name and zero or more aliases.
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#
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category c0; category c1; category c2; category c3;
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category c4; category c5; category c6; category c7;
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category c8; category c9; category c10; category c11;
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category c12; category c13; category c14; category c15;
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category c16; category c17; category c18; category c19;
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category c20; category c21; category c22; category c23;
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category c24; category c25; category c26; category c27;
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category c28; category c29; category c30; category c31;
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category c32; category c33; category c34; category c35;
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category c36; category c37; category c38; category c39;
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category c40; category c41; category c42; category c43;
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category c44; category c45; category c46; category c47;
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category c48; category c49; category c50; category c51;
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category c52; category c53; category c54; category c55;
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category c56; category c57; category c58; category c59;
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category c60; category c61; category c62; category c63;
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category c64; category c65; category c66; category c67;
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category c68; category c69; category c70; category c71;
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category c72; category c73; category c74; category c75;
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category c76; category c77; category c78; category c79;
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category c80; category c81; category c82; category c83;
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category c84; category c85; category c86; category c87;
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category c88; category c89; category c90; category c91;
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category c92; category c93; category c94; category c95;
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category c96; category c97; category c98; category c99;
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category c100; category c101; category c102; category c103;
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category c104; category c105; category c106; category c107;
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category c108; category c109; category c110; category c111;
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category c112; category c113; category c114; category c115;
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category c116; category c117; category c118; category c119;
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category c120; category c121; category c122; category c123;
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category c124; category c125; category c126; category c127;
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category c128; category c129; category c130; category c131;
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category c132; category c133; category c134; category c135;
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category c136; category c137; category c138; category c139;
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category c140; category c141; category c142; category c143;
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category c144; category c145; category c146; category c147;
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category c148; category c149; category c150; category c151;
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category c152; category c153; category c154; category c155;
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category c156; category c157; category c158; category c159;
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category c160; category c161; category c162; category c163;
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category c164; category c165; category c166; category c167;
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category c168; category c169; category c170; category c171;
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category c172; category c173; category c174; category c175;
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category c176; category c177; category c178; category c179;
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category c180; category c181; category c182; category c183;
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category c184; category c185; category c186; category c187;
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category c188; category c189; category c190; category c191;
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category c192; category c193; category c194; category c195;
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category c196; category c197; category c198; category c199;
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category c200; category c201; category c202; category c203;
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category c204; category c205; category c206; category c207;
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category c208; category c209; category c210; category c211;
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category c212; category c213; category c214; category c215;
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category c216; category c217; category c218; category c219;
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category c220; category c221; category c222; category c223;
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category c224; category c225; category c226; category c227;
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category c228; category c229; category c230; category c231;
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category c232; category c233; category c234; category c235;
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category c236; category c237; category c238; category c239;
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category c240; category c241; category c242; category c243;
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category c244; category c245; category c246; category c247;
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category c248; category c249; category c250; category c251;
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category c252; category c253; category c254; category c255;
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#
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# Each MCS level specifies a sensitivity and zero or more categories which may
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# be associated with that sensitivity.
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#
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level s0:c0.c255;
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#
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# Define the MCS policy
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#
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# mlsconstrain class_set perm_set expression ;
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#
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# mlsvalidatetrans class_set expression ;
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#
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# expression : ( expression )
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# | not expression
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# | expression and expression
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# | expression or expression
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# | u1 op u2
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# | r1 role_mls_op r2
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# | t1 op t2
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# | l1 role_mls_op l2
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# | l1 role_mls_op h2
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# | h1 role_mls_op l2
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# | h1 role_mls_op h2
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# | l1 role_mls_op h1
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# | l2 role_mls_op h2
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# | u1 op names
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# | u2 op names
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# | r1 op names
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# | r2 op names
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# | t1 op names
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# | t2 op names
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# | u3 op names (NOTE: this is only available for mlsvalidatetrans)
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# | r3 op names (NOTE: this is only available for mlsvalidatetrans)
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# | t3 op names (NOTE: this is only available for mlsvalidatetrans)
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#
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# op : == | !=
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# role_mls_op : == | != | eq | dom | domby | incomp
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#
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# names : name | { name_list }
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# name_list : name | name_list name
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#
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#
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# MCS policy for the file classes
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#
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# Constrain file access so that the high range of the process dominates
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# the high range of the file. We use the high range of the process so
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# that processes can always simply run at s0.
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#
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# Note that getattr on files is always permitted.
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#
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mlsconstrain file { write setattr append unlink link rename ioctl lock execute relabelfrom }
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( h1 dom h2 );
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# New filesystem object labels must be dominated by the relabeling subject
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# clearance, also the objects are single-level.
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mlsconstrain file { create relabelto }
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(( h1 dom h2 ) and ( l2 eq h2 ));
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# At this time we do not restrict "ps" type operations via MCS. This
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# will probably change in future.
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mlsconstrain file { read }
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(( h1 dom h2 ) or ( t2 == domain ) or ( t1 == mlsfileread ));
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# new file labels must be dominated by the relabeling subject clearance
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mlsconstrain { dir lnk_file chr_file blk_file sock_file fifo_file } { relabelfrom }
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( h1 dom h2 );
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mlsconstrain { dir lnk_file chr_file blk_file sock_file fifo_file } { create relabelto }
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(( h1 dom h2 ) and ( l2 eq h2 ));
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mlsconstrain process { transition dyntransition }
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(( h1 dom h2 ) or ( t1 == mcssetcats ));
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mlsconstrain process { ptrace }
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( h1 dom h2 );
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mlsconstrain process { sigkill sigstop }
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(( h1 dom h2 ) or ( t1 == mcskillall ));
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') dnl end enable_mcs
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