platform_system_sepolicy/private/vold_prepare_subdirs.te
Tianjie b729aa6c5e Add context for checkin directory
Checkin apps use /data/misc_ce/<id>/checkin to backup the checkin
metadata. So users won't lose the checkin tokens when they clear
the app's storage.

One example is when GMScore is used for checkin, users may clear
GMScore data via "settings". If the device accidentally loses the
token without backup, it won't be able to checkin again until
factory reset.

The contents in checkin dir will be cleaned up when a user is removed
from the device. We also plan to add Gmscore test to ensure the dir
is cleaned up at checkin time, thus prevent other Gmscore modules
from using this storage by mistake.

Bug: 197636740
Test: boot device, check selinux label, check gmscore writes to the new dir
Change-Id: If3ff5e0fb75b4d49ce80d91b0086b58db002e4fb
2021-10-14 16:21:10 -07:00

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domain_auto_trans(vold, vold_prepare_subdirs_exec, vold_prepare_subdirs)
typeattribute vold_prepare_subdirs mlstrustedsubject;
allow vold_prepare_subdirs system_file:file execute_no_trans;
allow vold_prepare_subdirs shell_exec:file rx_file_perms;
allow vold_prepare_subdirs toolbox_exec:file rx_file_perms;
allow vold_prepare_subdirs devpts:chr_file rw_file_perms;
allow vold_prepare_subdirs vold:fd use;
allow vold_prepare_subdirs vold:fifo_file { read write };
allow vold_prepare_subdirs file_contexts_file:file r_file_perms;
allow vold_prepare_subdirs self:global_capability_class_set { chown dac_override dac_read_search fowner };
allow vold_prepare_subdirs self:process setfscreate;
allow vold_prepare_subdirs {
system_data_file
vendor_data_file
}:dir { open read write add_name remove_name rmdir relabelfrom };
allow vold_prepare_subdirs {
apex_data_file_type
apex_module_data_file
apex_rollback_data_file
backup_data_file
checkin_data_file
face_vendor_data_file
fingerprint_vendor_data_file
iris_vendor_data_file
rollback_data_file
storaged_data_file
system_data_file
vold_data_file
}:dir { create_dir_perms relabelto };
allow vold_prepare_subdirs {
apex_data_file_type
apex_art_staging_data_file
apex_module_data_file
apex_rollback_data_file
backup_data_file
checkin_data_file
face_vendor_data_file
fingerprint_vendor_data_file
iris_vendor_data_file
rollback_data_file
storaged_data_file
system_data_file
vold_data_file
}:file { getattr unlink };
allow vold_prepare_subdirs apex_mnt_dir:dir { open read };
allow vold_prepare_subdirs mnt_expand_file:dir search;
allow vold_prepare_subdirs user_profile_data_file:dir { search getattr relabelfrom };
allow vold_prepare_subdirs user_profile_root_file:dir { search getattr relabelfrom relabelto };
# /data/misc is unlabeled during early boot.
allow vold_prepare_subdirs unlabeled:dir search;
dontaudit vold_prepare_subdirs { proc unlabeled }:file r_file_perms;