android_system_sepolicy/private/incident.te
Nick Kralevich 5e37271df8 Introduce system_file_type
system_file_type is a new attribute used to identify files which exist
on the /system partition. It's useful for allow rules in init, which are
based off of a blacklist of writable files. Additionally, it's useful
for constructing neverallow rules to prevent regressions.

Additionally, add commented out tests which enforce that all files on
the /system partition have the system_file_type attribute. These tests
will be uncommented in a future change after all the device-specific
policies are cleaned up.

Test: Device boots and no obvious problems.
Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
2018-09-27 12:52:09 -07:00

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typeattribute incident coredomain;
type incident_exec, system_file_type, exec_type, file_type;
# switch to incident domain for incident command
domain_auto_trans(shell, incident_exec, incident)
# allow incident access to stdout from its parent shell.
allow incident shell:fd use;
# allow incident be able to output data for CTS to fetch.
allow incident devpts:chr_file { read write };
# allow incident to communicate use, read and write over the adb
# connection.
allow incident adbd:fd use;
allow incident adbd:unix_stream_socket { read write };
# allow adbd to reap incident
allow incident adbd:process { sigchld };
# Allow the incident command to talk to the incidentd over the binder, and get
# back the incident report data from a ParcelFileDescriptor.
binder_use(incident)
allow incident incident_service:service_manager find;
binder_call(incident, incidentd)
allow incident incidentd:fifo_file write;
# only allow incident being called by shell
neverallow { domain -su -shell -incident } incident_exec:file { execute execute_no_trans };