ad4874479d
In virtualized deployments of Android, it can be useful to have access to a description of the hypervisor/host environment being used to run the guest OS instance. This is represented by means of a new system property ro.boot.hypervisor.version, which is meant to convey a free-form descriptor of the current host/hypervisor version The property is meant to be provided to Android as androidboot. by whatever host-specific means are used to supply other boot properties to the target Android instance. Access could be later opened to other vendor processes to set if needed for specific setups where init is not a sufficiently-early stage for host/guest communication. Such setups are not known at this time. For a native Android incantation, the property defaults to being missing Other properties could later be added to this same namespace and context if they turn out to be useful in specific scenarios. Bug: 178749018 Test: build cuttlefish Change-Id: Id721c14ef1958b525c2866a660dcae8fd176a79d Merged-In: Id721c14ef1958b525c2866a660dcae8fd176a79d
118 lines
3.6 KiB
Text
118 lines
3.6 KiB
Text
typeattribute dumpstate coredomain;
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type dumpstate_tmpfs, file_type;
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init_daemon_domain(dumpstate)
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# Execute and transition to the vdc domain
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domain_auto_trans(dumpstate, vdc_exec, vdc)
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# Acquire advisory lock on /system/etc/xtables.lock from ip[6]tables
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allow dumpstate system_file:file lock;
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allow dumpstate storaged_exec:file rx_file_perms;
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# /data/misc/a11ytrace for accessibility traces
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userdebug_or_eng(`
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allow dumpstate accessibility_trace_data_file:dir r_dir_perms;
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allow dumpstate accessibility_trace_data_file:file r_file_perms;
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')
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# /data/misc/wmtrace for wm traces
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userdebug_or_eng(`
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allow dumpstate wm_trace_data_file:dir r_dir_perms;
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allow dumpstate wm_trace_data_file:file r_file_perms;
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')
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# Allow dumpstate to make binder calls to incidentd
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binder_call(dumpstate, incidentd)
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# Allow dumpstate to make binder calls to storaged service
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binder_call(dumpstate, storaged)
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# Allow dumpstate to make binder calls to statsd
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binder_call(dumpstate, statsd)
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# Allow dumpstate to talk to gpuservice over binder
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binder_call(dumpstate, gpuservice);
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# Allow dumpstate to talk to idmap over binder
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binder_call(dumpstate, idmap);
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# Allow dumpstate to talk to profcollectd over binder
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userdebug_or_eng(`
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binder_call(dumpstate, profcollectd)
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')
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# Collect metrics on boot time created by init
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get_prop(dumpstate, boottime_prop)
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# Signal native processes to dump their stack.
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allow dumpstate {
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mediatranscoding
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statsd
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netd
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}:process signal;
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userdebug_or_eng(`
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allow dumpstate keystore:process signal;
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')
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# For collecting bugreports.
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no_debugfs_restriction(`
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allow dumpstate debugfs_wakeup_sources:file r_file_perms;
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')
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allow dumpstate dev_type:blk_file getattr;
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allow dumpstate webview_zygote:process signal;
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allow dumpstate sysfs_dmabuf_stats:file r_file_perms;
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dontaudit dumpstate update_engine:binder call;
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# Read files in /proc
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allow dumpstate {
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proc_net_tcp_udp
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proc_pid_max
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}:file r_file_perms;
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# For comminucating with the system process to do confirmation ui.
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binder_call(dumpstate, incidentcompanion_service)
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# Set properties.
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# dumpstate_prop is used to share state with the Shell app.
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set_prop(dumpstate, dumpstate_prop)
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set_prop(dumpstate, exported_dumpstate_prop)
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# dumpstate_options_prop is used to pass extra command-line args.
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set_prop(dumpstate, dumpstate_options_prop)
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# Allow dumpstate to kill vendor dumpstate service by init
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set_prop(dumpstate, ctl_dumpstate_prop)
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# For dumping dynamic partition information.
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set_prop(dumpstate, lpdumpd_prop)
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binder_call(dumpstate, lpdumpd)
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# For dumping hypervisor information.
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get_prop(dumpstate, hypervisor_prop)
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# For dumping device-mapper and snapshot information.
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allow dumpstate gsid_exec:file rx_file_perms;
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set_prop(dumpstate, ctl_gsid_prop)
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binder_call(dumpstate, gsid)
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r_dir_file(dumpstate, ota_metadata_file)
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# For starting (and killing) perfetto --save-for-bugreport. If a labelled trace
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# is being recorded, the command above will serialize it into
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# /data/misc/perfetto-traces/bugreport/*.pftrace .
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domain_auto_trans(dumpstate, perfetto_exec, perfetto)
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allow dumpstate perfetto:process signal;
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allow dumpstate perfetto_traces_data_file:dir { search };
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allow dumpstate perfetto_traces_bugreport_data_file:dir rw_dir_perms;
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allow dumpstate perfetto_traces_bugreport_data_file:file { r_file_perms unlink };
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# When exec-ing /system/bin/perfetto, dumpstates redirects stdio to /dev/null
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# (which is labelled as dumpstate_tmpfs) to avoid leaking a FD to the bugreport
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# zip file. These rules are to allow perfetto.te to inherit dumpstate's
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# /dev/null.
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allow perfetto dumpstate_tmpfs:file rw_file_perms;
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allow perfetto dumpstate:fd use;
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