07e0430bd0
no writing to vendor_file_type is the intention here, but they only restricted vendor_file. Bug: 281877578 Test: build (neverallow only change) Change-Id: Ic5459dcd420ee24bad8310a587a0b9b1cc5b966a
75 lines
2.4 KiB
Text
75 lines
2.4 KiB
Text
# Android heap profiling daemon. go/heapprofd.
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type heapprofd_exec, exec_type, file_type, system_file_type;
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type heapprofd_tmpfs, file_type;
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init_daemon_domain(heapprofd)
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tmpfs_domain(heapprofd)
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# Allow apps in other MLS contexts (for multi-user) to access
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# shared memory buffers created by heapprofd.
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typeattribute heapprofd_tmpfs mlstrustedobject;
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set_prop(heapprofd, heapprofd_prop);
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# Necessary for /proc/[pid]/cmdline access & sending signals.
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typeattribute heapprofd mlstrustedsubject;
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# Allow sending signals to processes. This excludes SIGKILL, SIGSTOP and
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# SIGCHLD, which are controlled by separate permissions.
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allow heapprofd self:capability kill;
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# When scanning /proc/[pid]/cmdline to find matching processes for by-name
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# profiling, only allowlisted domains will be allowed by SELinux. Avoid
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# spamming logs with denials for entries that we can not access.
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dontaudit heapprofd domain:dir { search open };
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# Write trace data to the Perfetto traced daemon. This requires connecting to
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# its producer socket and obtaining a (per-process) tmpfs fd.
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perfetto_producer(heapprofd)
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# When handling profiling for all processes, heapprofd needs to read
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# executables/libraries/etc to do stack unwinding.
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r_dir_file(heapprofd, nativetest_data_file)
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r_dir_file(heapprofd, system_file_type)
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r_dir_file(heapprofd, apk_data_file)
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r_dir_file(heapprofd, dalvikcache_data_file)
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r_dir_file(heapprofd, vendor_file_type)
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r_dir_file(heapprofd, shell_test_data_file)
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# ART apex files and directory access to the containing /data/misc/apexdata.
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r_dir_file(heapprofd, apex_art_data_file)
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allow heapprofd apex_module_data_file:dir { getattr search };
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# Some dex files are not world-readable.
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# We are still constrained by the SELinux rules above.
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allow heapprofd self:global_capability_class_set dac_read_search;
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# For checking profileability.
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allow heapprofd packages_list_file:file r_file_perms;
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# Never allow profiling privileged or otherwise incompatible domains.
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# Corresponding allow-rule is in private/domain.te.
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never_profile_heap(`{
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apexd
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app_zygote
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bpfloader
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hal_configstore_server
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init
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kernel
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keystore
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llkd
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logd
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logpersist
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recovery
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recovery_persist
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recovery_refresh
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ueventd
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vendor_init
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vold
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webview_zygote
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zygote
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}')
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full_treble_only(`
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neverallow heapprofd vendor_file_type:file no_w_file_perms;
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neverallow heapprofd { vendor_file_type -vndk_sp_file }:file no_x_file_perms;
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')
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