private/odrefresh.te

# odrefresh
type odrefresh, domain, coredomain, artd_subprocess_type;
type odrefresh_exec, system_file_type, exec_type, file_type;

# Allow odrefresh to create files and directories for on device signing.
allow odrefresh apex_module_data_file:dir { getattr search };
allow odrefresh apex_art_data_file:dir { create_dir_perms relabelfrom };
allow odrefresh apex_art_data_file:file { create_file_perms relabelto } ;

# Allow odrefresh to create data files (typically for metrics before statsd starts).
allow odrefresh odrefresh_data_file:dir create_dir_perms;
allow odrefresh odrefresh_data_file:file create_file_perms;

userfaultfd_use(odrefresh)

# Staging area labels (/data/misc/apexdata/com.android.art/staging). odrefresh
# sets up files here and passes file descriptors for dex2oat to write to.
allow odrefresh apex_art_staging_data_file:dir { create_dir_perms relabelto };
allow odrefresh apex_art_staging_data_file:file { create_file_perms relabelfrom };

# Run dex2oat in its own sandbox.
domain_auto_trans(odrefresh, dex2oat_exec, dex2oat)

# Allow odrefresh to kill dex2oat if compilation times out.
allow odrefresh dex2oat:process sigkill;

# Use devpts and fd from odsign (which exec()'s odrefresh)
allow odrefresh odsign_devpts:chr_file { read write };
allow odrefresh odsign:fd use;

# Allow odrefresh to read /apex/apex-info-list.xml to determine
# whether current apex is in /system or /data.
allow odrefresh apex_info_file:file r_file_perms;

# Allow updating boot animation status.
set_prop(odrefresh, bootanim_system_prop)

# Allow query ART device config properties
get_prop(odrefresh, device_config_runtime_native_prop)
get_prop(odrefresh, device_config_runtime_native_boot_prop)

# Do not audit unused resources from parent processes (adb, shell, su).
# These appear to be unnecessary for odrefresh.
dontaudit odrefresh { adbd shell }:fd use;
dontaudit odrefresh devpts:chr_file rw_file_perms;
dontaudit odrefresh adbd:unix_stream_socket { getattr read write };

# Read access to SELinux context files, for restorecon.
allow odrefresh file_contexts_file:file r_file_perms;
allow odrefresh seapp_contexts_file:file r_file_perms;

# Check validity of SELinux context, for restorecon.
selinux_check_context(odrefresh)

# odrefresh iterates over all properties to find the ones that it's interested
# in. It's okay to ignore denials on other properties.
dontaudit odrefresh property_type:file r_file_perms;

# Allow to be called by artd in Pre-reboot Dexopt.
allow odrefresh artd:fd use;

# Neverallow rules.

# No other processes should be creating files in the staging area.
neverallow { domain -init -odrefresh -compos_fd_server } apex_art_staging_data_file:file open;

# No processes other than init, odrefresh, system_server, and artd access
# odrefresh_data_files.
# Among those, artd only needs to bind-mount /data/misc/odrefresh, but doesn't
# need to access the files.
neverallow { domain -init -odrefresh -system_server -artd } odrefresh_data_file:dir *;
neverallow { domain -init -odrefresh -system_server } odrefresh_data_file:file *;