a1b4560088
Grant observed uses of permissions being audited in domain_deprecated.
fsck
avc: granted { getattr } for path="/" dev="dm-0" ino=2 scontext=u:r:fsck:s0 tcontext=u:object_r:rootfs:s0 tclass=dir
keystore
avc: granted { read open } for path="/vendor/lib64/hw" dev="dm-1" ino=168 scontext=u:r:keystore:s0 tcontext=u:object_r:system_file:s0 tclass=dir
sdcardd
avc: granted { read open } for path="/proc/filesystems" dev="proc" ino=4026532412 scontext=u:r:sdcardd:s0 tcontext=u:object_r:proc:s0 tclass=file
update_engine
avc: granted { getattr } for path="/proc/misc" dev="proc" ino=4026532139 scontext=u:r:update_engine:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: granted { read open } for path="/proc/misc" dev="proc" ino=4026532139 scontext=u:r:update_engine:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: granted { read } for name="hw" dev="dm-1" ino=168 scontext=u:r:update_engine:s0 tcontext=u:object_r:system_file:s0 tclass=dir
vold
avc: granted { read open } for path="/vendor/lib64/hw" dev="dm-1" ino=168 scontext=u:r:vold:s0 tcontext=u:object_r:system_file:s0 tclass=dir
Test: Marlin builds and boots, avc granted messages no longer observed.
Bug: 35197529
Change-Id: Iae34ae3b9e22ba7550cf7d45dc011ab043e63424
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
type keystore, domain, domain_deprecated;
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type keystore_exec, exec_type, file_type;
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# keystore daemon
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typeattribute keystore mlstrustedsubject;
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binder_use(keystore)
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binder_service(keystore)
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binder_call(keystore, system_server)
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# talk to keymaster
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binder_call(keystore, hwservicemanager)
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binder_call(keystore, hal_keymaster)
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allow keystore keystore_data_file:dir create_dir_perms;
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allow keystore keystore_data_file:notdevfile_class_set create_file_perms;
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allow keystore keystore_exec:file { getattr };
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allow keystore tee_device:chr_file rw_file_perms;
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allow keystore tee:unix_stream_socket connectto;
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add_service(keystore, keystore_service)
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allow keystore sec_key_att_app_id_provider_service:service_manager find;
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# Check SELinux permissions.
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selinux_check_access(keystore)
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allow keystore ion_device:chr_file r_file_perms;
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r_dir_file(keystore, cgroup)
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allow keystore system_file:dir r_dir_perms;
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###
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### Neverallow rules
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###
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### Protect ourself from others
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###
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neverallow { domain -keystore } keystore_data_file:dir ~{ open create read getattr setattr search relabelto ioctl };
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neverallow { domain -keystore } keystore_data_file:notdevfile_class_set ~{ relabelto getattr };
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neverallow { domain -keystore -init } keystore_data_file:dir *;
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neverallow { domain -keystore -init } keystore_data_file:notdevfile_class_set *;
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neverallow * keystore:process ptrace;
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