134 lines
3.9 KiB
Plaintext
134 lines
3.9 KiB
Plaintext
policy_module(selinux, 1.18.1)
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########################################
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#
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# Declarations
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#
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## <desc>
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## <p>
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## Boolean to determine whether the system permits loading policy, and setting
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## enforcing mode. Set this to true and you have to reboot to set it back.
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## </p>
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## </desc>
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gen_bool(secure_mode_policyload,false)
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## <desc>
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## <p>
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## Boolean to determine whether the system permits setting Booelan values.
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## </p>
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## </desc>
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gen_bool(secure_mode_setbool,false)
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attribute boolean_type;
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attribute can_load_policy;
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attribute can_setenforce;
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attribute can_setsecparam;
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attribute selinux_unconfined_type;
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type boolean_t, boolean_type;
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genfscon selinuxfs /booleans/ -- gen_context(system_u:object_r:boolean_t,s0)
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type secure_mode_policyload_t;
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selinux_labeled_boolean(secure_mode_policyload_t, secure_mode_policyload)
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#
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# security_t is the target type when checking
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# the permissions in the security class. It is also
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# applied to selinuxfs inodes.
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#
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type security_t;
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files_mountpoint(security_t)
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fs_type(security_t)
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mls_trusted_object(security_t)
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sid security gen_context(system_u:object_r:security_t,mls_systemhigh)
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genfscon selinuxfs / gen_context(system_u:object_r:security_t,s0)
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genfscon securityfs / gen_context(system_u:object_r:security_t,s0)
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########################################
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#
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# Controlled setenforce access
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#
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neverallow ~{ selinux_unconfined_type can_setenforce } security_t:security setenforce;
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allow can_setenforce security_t:dir list_dir_perms;
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allow can_setenforce security_t:file rw_file_perms;
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dev_search_sysfs(can_setenforce)
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if(secure_mode_policyload) {
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dontaudit can_setenforce security_t:security setenforce;
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} else {
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allow can_setenforce security_t:security setenforce;
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}
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########################################
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#
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# Controlled load_policy access
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#
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neverallow ~{ selinux_unconfined_type can_load_policy } security_t:security load_policy;
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allow can_load_policy security_t:dir list_dir_perms;
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allow can_load_policy security_t:file rw_file_perms;
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dev_search_sysfs(can_load_policy)
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if(secure_mode_policyload) {
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dontaudit can_load_policy security_t:security load_policy;
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} else {
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allow can_load_policy security_t:security load_policy;
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}
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########################################
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#
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# Controlled security parameters access
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#
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neverallow ~{ selinux_unconfined_type can_setsecparam } security_t:security setsecparam;
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allow can_setsecparam security_t:dir list_dir_perms;
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allow can_setsecparam security_t:file rw_file_perms;
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allow can_setsecparam security_t:security setsecparam;
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auditallow can_setsecparam security_t:security setsecparam;
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dev_search_sysfs(can_setsecparam)
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########################################
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#
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# Unconfined access to this module
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#
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# use SELinuxfs
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allow selinux_unconfined_type security_t:dir list_dir_perms;
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allow selinux_unconfined_type security_t:file rw_file_perms;
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allow selinux_unconfined_type boolean_type:file read_file_perms;
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# Access the security API.
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allow selinux_unconfined_type security_t:security { compute_av compute_create compute_member check_context compute_relabel compute_user setsecparam setcheckreqprot read_policy validate_trans };
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if (secure_mode_policyload) {
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dontaudit selinux_unconfined_type security_t:security { load_policy setenforce };
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} else {
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allow selinux_unconfined_type security_t:security { load_policy setenforce };
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}
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if (secure_mode_setbool) {
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dontaudit selinux_unconfined_type security_t:security setbool;
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} else {
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allow selinux_unconfined_type security_t:security setbool;
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}
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if (secure_mode_policyload && !secure_mode_setbool) {
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allow selinux_unconfined_type { boolean_type -secure_mode_policyload_t }:file write_file_perms;
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} else {
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dontaudit selinux_unconfined_type { boolean_type -secure_mode_policyload_t }:file write_file_perms;
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}
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if (!secure_mode_policyload && !secure_mode_setbool) {
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allow selinux_unconfined_type boolean_type:file write_file_perms;
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} else {
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dontaudit selinux_unconfined_type boolean_type:file write_file_perms;
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}
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