1##################################### 2# domain_trans(olddomain, type, newdomain) 3# Allow a transition from olddomain to newdomain 4# upon executing a file labeled with type. 5# This only allows the transition; it does not 6# cause it to occur automatically - use domain_auto_trans 7# if that is what you want. 8# 9define(`domain_trans', ` 10# Old domain may exec the file and transition to the new domain. 11allow $1 $2:file { getattr open read execute }; 12allow $1 $3:process transition; 13# New domain is entered by executing the file. 14allow $3 $2:file { entrypoint read execute }; 15# New domain can send SIGCHLD to its caller. 16allow $3 $1:process sigchld; 17# Enable AT_SECURE, i.e. libc secure mode. 18dontaudit $1 $3:process noatsecure; 19# XXX dontaudit candidate but requires further study. 20allow $1 $3:process { siginh rlimitinh }; 21') 22 23##################################### 24# domain_auto_trans(olddomain, type, newdomain) 25# Automatically transition from olddomain to newdomain 26# upon executing a file labeled with type. 27# 28define(`domain_auto_trans', ` 29# Allow the necessary permissions. 30domain_trans($1,$2,$3) 31# Make the transition occur by default. 32type_transition $1 $2:process $3; 33') 34 35##################################### 36# file_type_trans(domain, dir_type, file_type) 37# Allow domain to create a file labeled file_type in a 38# directory labeled dir_type. 39# This only allows the transition; it does not 40# cause it to occur automatically - use file_type_auto_trans 41# if that is what you want. 42# 43define(`file_type_trans', ` 44# Allow the domain to add entries to the directory. 45allow $1 $2:dir ra_dir_perms; 46# Allow the domain to create the file. 47allow $1 $3:notdevfile_class_set create_file_perms; 48allow $1 $3:dir create_dir_perms; 49') 50 51##################################### 52# file_type_auto_trans(domain, dir_type, file_type) 53# Automatically label new files with file_type when 54# they are created by domain in directories labeled dir_type. 55# 56define(`file_type_auto_trans', ` 57# Allow the necessary permissions. 58file_type_trans($1, $2, $3) 59# Make the transition occur by default. 60type_transition $1 $2:dir $3; 61type_transition $1 $2:notdevfile_class_set $3; 62') 63 64##################################### 65# r_dir_file(domain, type) 66# Allow the specified domain to read directories, files 67# and symbolic links of the specified type. 68define(`r_dir_file', ` 69allow $1 $2:dir r_dir_perms; 70allow $1 $2:{ file lnk_file } r_file_perms; 71') 72 73##################################### 74# unconfined_domain(domain) 75# Allow the specified domain to do anything. 76# 77define(`unconfined_domain', ` 78typeattribute $1 mlstrustedsubject; 79typeattribute $1 unconfineddomain; 80') 81 82##################################### 83# tmpfs_domain(domain) 84# Define and allow access to a unique type for 85# this domain when creating tmpfs / shmem / ashmem files. 86define(`tmpfs_domain', ` 87type $1_tmpfs, file_type; 88type_transition $1 tmpfs:file $1_tmpfs; 89# Map with PROT_EXEC. 90allow $1 $1_tmpfs:file { read execute execmod }; 91') 92 93##################################### 94# init_daemon_domain(domain) 95# Set up a transition from init to the daemon domain 96# upon executing its binary. 97define(`init_daemon_domain', ` 98domain_auto_trans(init, $1_exec, $1) 99tmpfs_domain($1) 100') 101 102##################################### 103# app_domain(domain) 104# Allow a base set of permissions required for all apps. 105define(`app_domain', ` 106typeattribute $1 appdomain; 107# Label ashmem objects with our own unique type. 108tmpfs_domain($1) 109') 110 111##################################### 112# platform_app_domain(domain) 113# Allow permissions specific to platform apps. 114define(`platform_app_domain', ` 115typeattribute $1 platformappdomain; 116typeattribute $1 mlstrustedsubject; 117') 118 119##################################### 120# net_domain(domain) 121# Allow a base set of permissions required for network access. 122define(`net_domain', ` 123typeattribute $1 netdomain; 124') 125 126##################################### 127# bluetooth_domain(domain) 128# Allow a base set of permissions required for bluetooth access. 129define(`bluetooth_domain', ` 130typeattribute $1 bluetoothdomain; 131') 132 133##################################### 134# unix_socket_connect(clientdomain, socket, serverdomain) 135# Allow a local socket connection from clientdomain via 136# socket to serverdomain. 137define(`unix_socket_connect', ` 138allow $1 $2_socket:sock_file write; 139allow $1 $3:unix_stream_socket connectto; 140') 141 142##################################### 143# unix_socket_send(clientdomain, socket, serverdomain) 144# Allow a local socket send from clientdomain via 145# socket to serverdomain. 146define(`unix_socket_send', ` 147allow $1 $2_socket:sock_file write; 148allow $1 $3:unix_dgram_socket sendto; 149') 150 151##################################### 152# binder_use(domain) 153# Allow domain to use Binder IPC. 154define(`binder_use', ` 155# Call the servicemanager and transfer references to it. 156allow $1 servicemanager:binder { call transfer }; 157# Map /dev/ashmem with PROT_EXEC. 158allow $1 ashmem_device:chr_file execute; 159# rw access to /dev/binder and /dev/ashmem is presently granted to 160# all domains in domain.te. 161') 162 163##################################### 164# binder_call(clientdomain, serverdomain) 165# Allow clientdomain to perform binder IPC to serverdomain. 166define(`binder_call', ` 167# Call the server domain and optionally transfer references to it. 168allow $1 $2:binder { call transfer }; 169# Allow the serverdomain to transfer references to the client on the reply. 170allow $2 $1:binder transfer; 171# Receive and use open files from the server. 172allow $1 $2:fd use; 173') 174 175##################################### 176# binder_service(domain) 177# Mark a domain as being a Binder service domain. 178# Used to allow binder IPC to the various system services. 179define(`binder_service', ` 180typeattribute $1 binderservicedomain; 181') 182 183##################################### 184# selinux_check_access(domain) 185# Allow domain to check SELinux permissions via selinuxfs. 186define(`selinux_check_access', ` 187allow $1 selinuxfs:dir r_dir_perms; 188allow $1 selinuxfs:file rw_file_perms; 189allow $1 kernel:security compute_av; 190allow $1 self:netlink_selinux_socket *; 191') 192 193##################################### 194# selinux_check_context(domain) 195# Allow domain to check SELinux contexts via selinuxfs. 196define(`selinux_check_context', ` 197allow $1 selinuxfs:dir r_dir_perms; 198allow $1 selinuxfs:file rw_file_perms; 199allow $1 kernel:security check_context; 200') 201 202##################################### 203# selinux_getenforce(domain) 204# Allow domain to check whether SELinux is enforcing. 205define(`selinux_getenforce', ` 206allow $1 selinuxfs:dir r_dir_perms; 207allow $1 selinuxfs:file r_file_perms; 208') 209 210##################################### 211# selinux_setenforce(domain) 212# Allow domain to set SELinux to enforcing. 213define(`selinux_setenforce', ` 214allow $1 selinuxfs:dir r_dir_perms; 215allow $1 selinuxfs:file rw_file_perms; 216allow $1 kernel:security setenforce; 217') 218 219##################################### 220# selinux_setbool(domain) 221# Allow domain to set SELinux booleans. 222define(`selinux_setbool', ` 223allow $1 selinuxfs:dir r_dir_perms; 224allow $1 selinuxfs:file rw_file_perms; 225allow $1 kernel:security setbool; 226') 227 228##################################### 229# security_access_policy(domain) 230# Read only access to all policy files and 231# selinuxfs 232define(`security_access_policy', ` 233allow $1 security_file:dir r_dir_perms; 234allow $1 security_file:file r_file_perms; 235allow $1 security_file:lnk_file read; 236allow $1 selinuxfs:dir r_dir_perms; 237allow $1 selinuxfs:file r_file_perms; 238allow $1 rootfs:dir r_dir_perms; 239allow $1 rootfs:file r_file_perms; 240') 241 242##################################### 243# selinux_manage_policy(domain) 244# Ability to manage policy files, 245# trigger runtime reload, change 246# enforcing mode, manipulate booleans 247# and access kernel logs. 248define(`selinux_manage_policy', ` 249selinux_setenforce($1) 250selinux_setbool($1) 251security_access_policy($1) 252unix_socket_connect($1, property, init) 253allow $1 security_file:dir create_dir_perms; 254allow $1 security_file:file create_file_perms; 255allow $1 security_prop:property_service set; 256') 257 258##################################### 259# mmac_manage_policy(domain) 260# Ability to manage mmac policy files, 261# trigger runtime reload, change 262# mmac enforcing mode and access logcat. 263define(`mmac_manage_policy', ` 264unix_socket_connect($1, property, init) 265allow $1 security_file:dir create_dir_perms; 266allow $1 security_file:file create_file_perms; 267allow $1 security_prop:property_service set; 268') 269 270##################################### 271# access_logcat(domain) 272# Ability to read from logcat logs 273# and execute the logcat command 274define(`access_logcat', ` 275allow $1 log_device:chr_file read; 276allow $1 system_file:file x_file_perms; 277') 278 279##################################### 280# access_kmsg(domain) 281# Ability to read from kernel logs 282# and execute the klogctl syscall 283# in a non destructive manner. See 284# man 2 klogctl 285define(`access_kmsg', ` 286allow $1 kernel:system syslog_read; 287') 288 289##################################### 290# write_klog(domain) 291# Ability to write to kernel log via 292# klog_write() 293# See system/core/libcutil/klog.c 294define(`write_klog', ` 295type_transition $1 device:chr_file klog_device "__kmsg__"; 296allow $1 klog_device:chr_file { create open write unlink }; 297allow $1 device:dir { add_name remove_name }; 298') 299