    # Sample SELinux Policy

    ## <summary>
    ##  Sample SELinux Policy
    ## </summary>
    ## <desc>
    ## <p>
    ##  This module is not functional,
    ##  but only to test the syntax highlighting.
    ## </p>
    ## </desc>
    ## <required val="true">
    ##  Depended on by other required modules.
    ## </required>

    policycap open_perms;
    module myapp 1.0;

    require {
    	type httpd_t;
    	type httpd_sys_content_t;
    	type initrc_t;
    	class sock_file write;
    	class unix_stream_socket connectto;
    }

    allow httpd_t httpd_sys_content_t:sock_file write;
    allow httpd_t initrc_t:unix_stream_socket connectto;

    # Refpolicy
    tunable_policy(`allow_execmem',`
    	/usr/share/holas(/.*)? -- gen_context(system_u:object_r:holas_t,s0,fdf,df);
    ')
    # M4 Macros
    regexp(`GNUs not Unix', `\w\(\w+\)$', `*** \& *** \1 ***')
    ifdef(`distro_ubuntu',`
    	unconfined_domain(chkpwd_t)
    ')

    dominance { gen_dominance(0,decr($1)) };
    neverallow user=_isolated domain=((?!isolated_app).)*

    allow consoletype_t self:capability { sys_admin sys_tty_config };
    allow consoletype_t self:msg { send receive };

    # sample for administrative user
    user jadmin roles { staff_r sysadm_r };
    # sample for regular user
    user jdoe roles { user_r };

    default_user process source;
    default_range process source low;

    sid devnull;
    sid sysctl;

    common file { ioctl read write create getattr setattr lock relabelfrom relabelto append map unlink link rename execute swapon quotaon mounton };
    class dir inherits file { add_name remove_name reparent search rmdir open audit_access execmod };
    class class;

    sensitivity s0 alias sens0;
    category c0 alias cat0;

    mlsconstrain dir { search read ioctl lock }
    	(( h1 dom h2 ) or ( t1 == mcsreadall ) or
    	(( t1 != mcs_constrained_type ) and (t2 == domain)));

    attribute_role dpkg_roles;
    roleattribute system_r dpkg_roles;

    role system_r types system_t;
    role_transition hello init_script_file_type system_r;

    level s0:c0;
    user user_u roles role_r level s1:c1 range s1:c1 - s2:c2;
    range_transition initrc_t auditd_exec_t:process s15:c0.c255 - s20;
    range_transition source target:class s1 - s2 dsd;
    range_transition source target:class s1 ;

    attribute filesystem_type;
    type dhcp_etc_t;
    typealias dhcp_etc_t ALIAS { etc_dhcp_t etc_dhcpc_t etc_dhcpd_t };

    bool le_boolean true;
    TUNABLE allow_java_execstack false;

    type_transition root_xdrawable_t input_xevent_t:x_event root_input_xevent_t;
    AUDITALLOW xserver_t { root_xdrawable_t x_domain }:x_drawable send;

    optional {
    	neverallow untrusted_app *:{ netlink_route_socket netlink_selinux_socket } ioctl;
    	neverallowxperm shell domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
    };

    if le_boolean {
    	DONTAUDIT untrusted_app asec_public_file:file { execute execmod };
    } else {
    	ALLOW untrusted_app perfprofd_data_file:file r_file_perms;
    	allow untrusted_app perfprofd_data_file:dir r_dir_perms;
    };

    sid devnull system_u:object_r:null_device_t:s0
    genfscon sysfs /devices/system/cpu/online gen_context(system_u:object_r:cpu_online_t,s0)
    genfscon rootfs / gen_context(system_u:object_r:root_t,s0)

    genfscon proc /cpuinfo u:object_r:proc_cpuinfo:s0
    genfscon selinuxfs / u:object_r:selinuxfs:s0
    fs_use_trans devtmpfs system_u:object_r:device_t:s0;
    fs_use_task pipefs u:object_r:pipefs:s0;
    fs_use_xattr xfs u:object_r:labeledfs:s0;
    fs_use_xattr btrfs u:object_r:labeledfs:s0;

    portcon tcp 80 u:object_r:http_port:s0;
    portcon udp 1024-65535 gen_context(system_u:object_r:unreserved_port_t, s0);
    netifcon $2 gen_context(system_u:object_r:$1,$3) gen_context(system_u:object_r:unlabeled_t,$3);

    nodecon 2001:0DB8:AC10:FE01:: 2001:0DE0:DA88:2222:: system_u:object_r:hello_t:s0;
    nodecon ipv4 127.0.0.2 255.255.255.255 system_u:object_r:node_t:s0;

    #line 118

    # Regular Expressions
    regexp(`Hello(!|\^\^)+', `
    	^\s*(?<hello>\.)
    	(
    		hello[^\s\x12/][1-9]*|  # Hello
    		bye
    	)\s*$
    ')
    "aa/aa(?=sdf sdf)ds(aa aa)df[^ a]"
    "open
    "text\"aaa
    "filename\s\w\%(?=aa)aa"
    "/path\s\w(?=aa)aa"

    u:role:type:sen:cat:other
    u:role:type:sen:cat - sen:cat:other
    u:role:type:s0.s1:c0 , c1 - s2.s3:c2.c3,c4:other
    u:role:type:s0,other