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 open read execute getattr };
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# tmpfs_domain(domain)
75# Define and allow access to a unique type for
76# this domain when creating tmpfs / shmem / ashmem files.
77define(`tmpfs_domain', `
78type $1_tmpfs, file_type;
79type_transition $1 tmpfs:file $1_tmpfs;
80allow $1 $1_tmpfs:file { read write };
81')
82
83#####################################
84# init_daemon_domain(domain)
85# Set up a transition from init to the daemon domain
86# upon executing its binary.
87define(`init_daemon_domain', `
88domain_auto_trans(init, $1_exec, $1)
89tmpfs_domain($1)
90')
91
92#####################################
93# app_domain(domain)
94# Allow a base set of permissions required for all apps.
95define(`app_domain', `
96typeattribute $1 appdomain;
97# Label ashmem objects with our own unique type.
98tmpfs_domain($1)
99# Map with PROT_EXEC.
100allow $1 $1_tmpfs:file execute;
101')
102
103#####################################
104# net_domain(domain)
105# Allow a base set of permissions required for network access.
106define(`net_domain', `
107typeattribute $1 netdomain;
108')
109
110#####################################
111# bluetooth_domain(domain)
112# Allow a base set of permissions required for bluetooth access.
113define(`bluetooth_domain', `
114typeattribute $1 bluetoothdomain;
115')
116
117#####################################
118# unix_socket_connect(clientdomain, socket, serverdomain)
119# Allow a local socket connection from clientdomain via
120# socket to serverdomain.
121#
122# Note: If you see denial records that distill to the
123# following allow rules:
124# allow clientdomain property_socket:sock_file write;
125# allow clientdomain init:unix_stream_socket connectto;
126# allow clientdomain something_prop:property_service set;
127#
128# This sequence is indicative of attempting to set a property.
129# use set_prop(sourcedomain, targetproperty)
130#
131define(`unix_socket_connect', `
132allow $1 $2_socket:sock_file write;
133allow $1 $3:unix_stream_socket connectto;
134')
135
136#####################################
137# set_prop(sourcedomain, targetproperty)
138# Allows source domain to set the
139# targetproperty.
140#
141define(`set_prop', `
142unix_socket_connect($1, property, init)
143allow $1 $2:property_service set;
144')
145
146#####################################
147# unix_socket_send(clientdomain, socket, serverdomain)
148# Allow a local socket send from clientdomain via
149# socket to serverdomain.
150define(`unix_socket_send', `
151allow $1 $2_socket:sock_file write;
152allow $1 $3:unix_dgram_socket sendto;
153')
154
155#####################################
156# binder_use(domain)
157# Allow domain to use Binder IPC.
158define(`binder_use', `
159# Call the servicemanager and transfer references to it.
160allow $1 servicemanager:binder { call transfer };
161# servicemanager performs getpidcon on clients.
162allow servicemanager $1:dir search;
163allow servicemanager $1:file { read open };
164allow servicemanager $1:process getattr;
165# rw access to /dev/binder and /dev/ashmem is presently granted to
166# all domains in domain.te.
167')
168
169#####################################
170# binder_call(clientdomain, serverdomain)
171# Allow clientdomain to perform binder IPC to serverdomain.
172define(`binder_call', `
173# Call the server domain and optionally transfer references to it.
174allow $1 $2:binder { call transfer };
175# Allow the serverdomain to transfer references to the client on the reply.
176allow $2 $1:binder transfer;
177# Receive and use open files from the server.
178allow $1 $2:fd use;
179')
180
181#####################################
182# binder_service(domain)
183# Mark a domain as being a Binder service domain.
184# Used to allow binder IPC to the various system services.
185define(`binder_service', `
186typeattribute $1 binderservicedomain;
187')
188
189#####################################
190# wakelock_use(domain)
191# Allow domain to manage wake locks
192define(`wakelock_use', `
193# Access /sys/power/wake_lock and /sys/power/wake_unlock
194allow $1 sysfs_wake_lock:file rw_file_perms;
195# Accessing these files requires CAP_BLOCK_SUSPEND
196allow $1 self:capability2 block_suspend;
197')
198
199#####################################
200# selinux_check_access(domain)
201# Allow domain to check SELinux permissions via selinuxfs.
202define(`selinux_check_access', `
203allow $1 selinuxfs:file rw_file_perms;
204allow $1 kernel:security compute_av;
205allow $1 self:netlink_selinux_socket *;
206')
207
208#####################################
209# selinux_check_context(domain)
210# Allow domain to check SELinux contexts via selinuxfs.
211define(`selinux_check_context', `
212allow $1 selinuxfs:file rw_file_perms;
213allow $1 kernel:security check_context;
214')
215
216#####################################
217# selinux_setenforce(domain)
218# Allow domain to set SELinux to enforcing.
219define(`selinux_setenforce', `
220allow $1 selinuxfs:file rw_file_perms;
221allow $1 kernel:security setenforce;
222')
223
224#####################################
225# selinux_setbool(domain)
226# Allow domain to set SELinux booleans.
227define(`selinux_setbool', `
228allow $1 selinuxfs:file rw_file_perms;
229allow $1 kernel:security setbool;
230')
231
232#####################################
233# security_access_policy(domain)
234# Read only access to all policy files and
235# selinuxfs
236define(`security_access_policy', `
237allow $1 security_file:dir r_dir_perms;
238allow $1 security_file:file r_file_perms;
239')
240
241#####################################
242# selinux_manage_policy(domain)
243# Ability to manage policy files and
244# trigger runtime reload.
245define(`selinux_manage_policy', `
246security_access_policy($1)
247unix_socket_connect($1, property, init)
248allow $1 security_file:dir create_dir_perms;
249allow $1 security_file:file create_file_perms;
250allow $1 security_file:lnk_file { create rename unlink };
251allow $1 security_prop:property_service set;
252')
253
254#####################################
255# mmac_manage_policy(domain)
256# Ability to manage mmac policy files,
257# trigger runtime reload, change
258# mmac enforcing mode and access logcat.
259define(`mmac_manage_policy', `
260unix_socket_connect($1, property, init)
261allow $1 security_file:dir create_dir_perms;
262allow $1 security_file:file create_file_perms;
263allow $1 security_file:lnk_file { create rename unlink };
264allow $1 security_prop:property_service set;
265')
266
267#####################################
268# access_kmsg(domain)
269# Ability to read from kernel logs
270# and execute the klogctl syscall
271# in a non destructive manner. See
272# man 2 klogctl
273define(`access_kmsg', `
274allow $1 kernel:system syslog_read;
275')
276
277#####################################
278# create_pty(domain)
279# Allow domain to create and use a pty, isolated from any other domain ptys.
280define(`create_pty', `
281# Each domain gets a unique devpts type.
282type $1_devpts, fs_type;
283# Label the pty with the unique type when created.
284type_transition $1 devpts:chr_file $1_devpts;
285# Allow use of the pty after creation.
286allow $1 $1_devpts:chr_file { open getattr read write ioctl };
287# Note: devpts:dir search and ptmx_device:chr_file rw_file_perms
288# allowed to everyone via domain.te.
289')
290
291#####################################
292# Non system_app application set
293#
294define(`non_system_app_set', `{ appdomain -system_app }')
295
296#####################################
297# Recovery only
298# SELinux rules which apply only to recovery mode
299#
300define(`recovery_only', ifelse(target_recovery, `true', $1, ))
301
302#####################################
303# Userdebug or eng builds
304# SELinux rules which apply only to userdebug or eng builds
305#
306define(`userdebug_or_eng', ifelse(target_build_variant, `eng', $1, ifelse(target_build_variant, `userdebug', $1)))
307
308#####################################
309# write_logd(domain)
310# Ability to write to android log
311# daemon via sockets
312define(`write_logd', `
313unix_socket_send($1, logdw, logd)
314allow $1 pmsg_device:chr_file w_file_perms;
315')
316
317#####################################
318# read_logd(domain)
319# Ability to run logcat and read from android
320# log daemon via sockets
321define(`read_logd', `
322allow $1 logcat_exec:file rx_file_perms;
323unix_socket_connect($1, logdr, logd)
324')
325
326#####################################
327# control_logd(domain)
328# Ability to control
329# android log daemon via sockets
330define(`control_logd', `
331# Group AID_LOG checked by filesystem & logd
332# to permit control commands
333unix_socket_connect($1, logd, logd)
334')
335
336#####################################
337# use_keystore(domain)
338# Ability to use keystore.
339# Keystore is requires the following permissions
340# to call getpidcon.
341define(`use_keystore', `
342  allow keystore $1:dir search;
343  allow keystore $1:file { read open };
344  allow keystore $1:process getattr;
345  allow $1 keystore_service:service_manager find;
346  binder_call($1, keystore)
347')
348
349###########################################
350# use_drmservice(domain)
351# Ability to use DrmService which requires
352# DrmService to call getpidcon.
353define(`use_drmservice', `
354  allow drmserver $1:dir search;
355  allow drmserver $1:file { read open };
356  allow drmserver $1:process getattr;
357')
358