| ##################################### |
| # domain_trans(olddomain, type, newdomain) |
| # Allow a transition from olddomain to newdomain |
| # upon executing a file labeled with type. |
| # This only allows the transition; it does not |
| # cause it to occur automatically - use domain_auto_trans |
| # if that is what you want. |
| # |
| define(`domain_trans', ` |
| # Old domain may exec the file and transition to the new domain. |
| allow $1 $2:file { getattr open read execute }; |
| allow $1 $3:process transition; |
| # New domain is entered by executing the file. |
| allow $3 $2:file { entrypoint open read execute getattr }; |
| # New domain can send SIGCHLD to its caller. |
| allow $3 $1:process sigchld; |
| # Enable AT_SECURE, i.e. libc secure mode. |
| dontaudit $1 $3:process noatsecure; |
| # XXX dontaudit candidate but requires further study. |
| allow $1 $3:process { siginh rlimitinh }; |
| ') |
| |
| ##################################### |
| # domain_auto_trans(olddomain, type, newdomain) |
| # Automatically transition from olddomain to newdomain |
| # upon executing a file labeled with type. |
| # |
| define(`domain_auto_trans', ` |
| # Allow the necessary permissions. |
| domain_trans($1,$2,$3) |
| # Make the transition occur by default. |
| type_transition $1 $2:process $3; |
| ') |
| |
| ##################################### |
| # file_type_trans(domain, dir_type, file_type) |
| # Allow domain to create a file labeled file_type in a |
| # directory labeled dir_type. |
| # This only allows the transition; it does not |
| # cause it to occur automatically - use file_type_auto_trans |
| # if that is what you want. |
| # |
| define(`file_type_trans', ` |
| # Allow the domain to add entries to the directory. |
| allow $1 $2:dir ra_dir_perms; |
| # Allow the domain to create the file. |
| allow $1 $3:notdevfile_class_set create_file_perms; |
| allow $1 $3:dir create_dir_perms; |
| ') |
| |
| ##################################### |
| # file_type_auto_trans(domain, dir_type, file_type) |
| # Automatically label new files with file_type when |
| # they are created by domain in directories labeled dir_type. |
| # |
| define(`file_type_auto_trans', ` |
| # Allow the necessary permissions. |
| file_type_trans($1, $2, $3) |
| # Make the transition occur by default. |
| type_transition $1 $2:dir $3; |
| type_transition $1 $2:notdevfile_class_set $3; |
| ') |
| |
| ##################################### |
| # r_dir_file(domain, type) |
| # Allow the specified domain to read directories, files |
| # and symbolic links of the specified type. |
| define(`r_dir_file', ` |
| allow $1 $2:dir r_dir_perms; |
| allow $1 $2:{ file lnk_file } r_file_perms; |
| ') |
| |
| ##################################### |
| # tmpfs_domain(domain) |
| # Define and allow access to a unique type for |
| # this domain when creating tmpfs / shmem / ashmem files. |
| define(`tmpfs_domain', ` |
| type $1_tmpfs, file_type; |
| type_transition $1 tmpfs:file $1_tmpfs; |
| allow $1 $1_tmpfs:file { read write }; |
| ') |
| |
| ##################################### |
| # init_daemon_domain(domain) |
| # Set up a transition from init to the daemon domain |
| # upon executing its binary. |
| define(`init_daemon_domain', ` |
| domain_auto_trans(init, $1_exec, $1) |
| tmpfs_domain($1) |
| ') |
| |
| ##################################### |
| # app_domain(domain) |
| # Allow a base set of permissions required for all apps. |
| define(`app_domain', ` |
| typeattribute $1 appdomain; |
| # Label ashmem objects with our own unique type. |
| tmpfs_domain($1) |
| # Map with PROT_EXEC. |
| allow $1 $1_tmpfs:file execute; |
| ') |
| |
| ##################################### |
| # net_domain(domain) |
| # Allow a base set of permissions required for network access. |
| define(`net_domain', ` |
| typeattribute $1 netdomain; |
| ') |
| |
| ##################################### |
| # bluetooth_domain(domain) |
| # Allow a base set of permissions required for bluetooth access. |
| define(`bluetooth_domain', ` |
| typeattribute $1 bluetoothdomain; |
| ') |
| |
| ##################################### |
| # unix_socket_connect(clientdomain, socket, serverdomain) |
| # Allow a local socket connection from clientdomain via |
| # socket to serverdomain. |
| # |
| # Note: If you see denial records that distill to the |
| # following allow rules: |
| # allow clientdomain property_socket:sock_file write; |
| # allow clientdomain init:unix_stream_socket connectto; |
| # allow clientdomain something_prop:property_service set; |
| # |
| # This sequence is indicative of attempting to set a property. |
| # use set_prop(sourcedomain, targetproperty) |
| # |
| define(`unix_socket_connect', ` |
| ifelse($2, `property', ` |
| ifelse($3,`init', ` |
| print(`deprecated: unix_socket_connect($1, $2, $3) Please use set_prop($1, <property name>) instead.') |
| ') |
| ') |
| __unix_socket_connect__($1, $2, $3) |
| ') |
| |
| define(`__unix_socket_connect__', ` |
| allow $1 $2_socket:sock_file write; |
| allow $1 $3:unix_stream_socket connectto; |
| ') |
| |
| ##################################### |
| # set_prop(sourcedomain, targetproperty) |
| # Allows source domain to set the |
| # targetproperty. |
| # |
| define(`set_prop', ` |
| __unix_socket_connect__($1, property, init) |
| allow $1 $2:property_service set; |
| get_prop($1, $2) |
| ') |
| |
| ##################################### |
| # get_prop(sourcedomain, targetproperty) |
| # Allows source domain to read the |
| # targetproperty. |
| # |
| define(`get_prop', ` |
| allow $1 $2:file r_file_perms; |
| ') |
| |
| ##################################### |
| # unix_socket_send(clientdomain, socket, serverdomain) |
| # Allow a local socket send from clientdomain via |
| # socket to serverdomain. |
| define(`unix_socket_send', ` |
| allow $1 $2_socket:sock_file write; |
| allow $1 $3:unix_dgram_socket sendto; |
| ') |
| |
| ##################################### |
| # binder_use(domain) |
| # Allow domain to use Binder IPC. |
| define(`binder_use', ` |
| # Call the servicemanager and transfer references to it. |
| allow $1 servicemanager:binder { call transfer }; |
| # servicemanager performs getpidcon on clients. |
| allow servicemanager $1:dir search; |
| allow servicemanager $1:file { read open }; |
| allow servicemanager $1:process getattr; |
| # rw access to /dev/binder and /dev/ashmem is presently granted to |
| # all domains in domain.te. |
| ') |
| |
| ##################################### |
| # binder_call(clientdomain, serverdomain) |
| # Allow clientdomain to perform binder IPC to serverdomain. |
| define(`binder_call', ` |
| # Call the server domain and optionally transfer references to it. |
| allow $1 $2:binder { call transfer }; |
| # Allow the serverdomain to transfer references to the client on the reply. |
| allow $2 $1:binder transfer; |
| # Receive and use open files from the server. |
| allow $1 $2:fd use; |
| ') |
| |
| ##################################### |
| # binder_service(domain) |
| # Mark a domain as being a Binder service domain. |
| # Used to allow binder IPC to the various system services. |
| define(`binder_service', ` |
| typeattribute $1 binderservicedomain; |
| ') |
| |
| ##################################### |
| # wakelock_use(domain) |
| # Allow domain to manage wake locks |
| define(`wakelock_use', ` |
| # Access /sys/power/wake_lock and /sys/power/wake_unlock |
| allow $1 sysfs_wake_lock:file rw_file_perms; |
| # Accessing these files requires CAP_BLOCK_SUSPEND |
| allow $1 self:capability2 block_suspend; |
| ') |
| |
| ##################################### |
| # selinux_check_access(domain) |
| # Allow domain to check SELinux permissions via selinuxfs. |
| define(`selinux_check_access', ` |
| allow $1 selinuxfs:file rw_file_perms; |
| allow $1 kernel:security compute_av; |
| allow $1 self:netlink_selinux_socket *; |
| ') |
| |
| ##################################### |
| # selinux_check_context(domain) |
| # Allow domain to check SELinux contexts via selinuxfs. |
| define(`selinux_check_context', ` |
| allow $1 selinuxfs:file rw_file_perms; |
| allow $1 kernel:security check_context; |
| ') |
| |
| ##################################### |
| # selinux_setenforce(domain) |
| # Allow domain to set SELinux to enforcing. |
| define(`selinux_setenforce', ` |
| allow $1 selinuxfs:file rw_file_perms; |
| allow $1 kernel:security setenforce; |
| ') |
| |
| ##################################### |
| # selinux_setbool(domain) |
| # Allow domain to set SELinux booleans. |
| define(`selinux_setbool', ` |
| allow $1 selinuxfs:file rw_file_perms; |
| allow $1 kernel:security setbool; |
| ') |
| |
| ##################################### |
| # security_access_policy(domain) |
| # Read only access to all policy files and |
| # selinuxfs |
| define(`security_access_policy', ` |
| allow $1 security_file:dir r_dir_perms; |
| allow $1 security_file:file r_file_perms; |
| ') |
| |
| ##################################### |
| # mmac_manage_policy(domain) |
| # Ability to manage mmac policy files, |
| # trigger runtime reload, change |
| # mmac enforcing mode and access logcat. |
| define(`mmac_manage_policy', ` |
| allow $1 security_file:dir create_dir_perms; |
| allow $1 security_file:file create_file_perms; |
| allow $1 security_file:lnk_file { create rename unlink }; |
| set_prop($1, security_prop) |
| ') |
| |
| ##################################### |
| # access_kmsg(domain) |
| # Ability to read from kernel logs |
| # and execute the klogctl syscall |
| # in a non destructive manner. See |
| # man 2 klogctl |
| define(`access_kmsg', ` |
| allow $1 kernel:system syslog_read; |
| ') |
| |
| ##################################### |
| # create_pty(domain) |
| # Allow domain to create and use a pty, isolated from any other domain ptys. |
| define(`create_pty', ` |
| # Each domain gets a unique devpts type. |
| type $1_devpts, fs_type; |
| # Label the pty with the unique type when created. |
| type_transition $1 devpts:chr_file $1_devpts; |
| # Allow use of the pty after creation. |
| allow $1 $1_devpts:chr_file { open getattr read write ioctl }; |
| # Note: devpts:dir search and ptmx_device:chr_file rw_file_perms |
| # allowed to everyone via domain.te. |
| ') |
| |
| ##################################### |
| # Non system_app application set |
| # |
| define(`non_system_app_set', `{ appdomain -system_app }') |
| |
| ##################################### |
| # Recovery only |
| # SELinux rules which apply only to recovery mode |
| # |
| define(`recovery_only', ifelse(target_recovery, `true', $1, )) |
| |
| ##################################### |
| # Userdebug or eng builds |
| # SELinux rules which apply only to userdebug or eng builds |
| # |
| define(`userdebug_or_eng', ifelse(target_build_variant, `eng', $1, ifelse(target_build_variant, `userdebug', $1))) |
| define(`eng', ifelse(target_build_variant, `eng', $1)) |
| |
| ##################################### |
| # write_logd(domain) |
| # Ability to write to android log |
| # daemon via sockets |
| define(`write_logd', ` |
| unix_socket_send($1, logdw, logd) |
| allow $1 pmsg_device:chr_file w_file_perms; |
| ') |
| |
| ##################################### |
| # read_logd(domain) |
| # Ability to run logcat and read from android |
| # log daemon via sockets |
| define(`read_logd', ` |
| allow $1 logcat_exec:file rx_file_perms; |
| unix_socket_connect($1, logdr, logd) |
| ') |
| |
| ##################################### |
| # control_logd(domain) |
| # Ability to control |
| # android log daemon via sockets |
| define(`control_logd', ` |
| # Group AID_LOG checked by filesystem & logd |
| # to permit control commands |
| unix_socket_connect($1, logd, logd) |
| ') |
| |
| ##################################### |
| # use_keystore(domain) |
| # Ability to use keystore. |
| # Keystore is requires the following permissions |
| # to call getpidcon. |
| define(`use_keystore', ` |
| allow keystore $1:dir search; |
| allow keystore $1:file { read open }; |
| allow keystore $1:process getattr; |
| allow $1 keystore_service:service_manager find; |
| binder_call($1, keystore) |
| ') |
| |
| ########################################### |
| # use_drmservice(domain) |
| # Ability to use DrmService which requires |
| # DrmService to call getpidcon. |
| define(`use_drmservice', ` |
| allow drmserver $1:dir search; |
| allow drmserver $1:file { read open }; |
| allow drmserver $1:process getattr; |
| ') |
| |
| ########################################## |
| # print a message with a trailing newline |
| # print(`args') |
| define(`print', `errprint(`m4: '__file__: __line__`: $* |
| ')') |