094e8e81a2
vfio_handler will be active only if device assignment feature is turned on. Bug: 306563735 Test: microdroid tests with and without the flag Change-Id: I5559dfca1a29852b65481c95f37edc9977ee9d7d
37 lines
1.7 KiB
Text
37 lines
1.7 KiB
Text
is_flag_enabled(RELEASE_AVF_ENABLE_DEVICE_ASSIGNMENT, `
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# vfio_handler is a helper service for VFIO tasks, like binding platform devices to VFIO driver.
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# vfio_handler is separate from virtualizationservice as VFIO tasks require root.
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type vfio_handler, domain, coredomain;
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type vfio_handler_exec, system_file_type, exec_type, file_type;
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# When init runs a file labelled with vfio_handler_exec, run it in the vfio_handler domain.
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init_daemon_domain(vfio_handler)
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# Let the vfio_handler domain register the vfio_handler_service with ServiceManager.
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add_service(vfio_handler, vfio_handler_service)
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# Let the vfio_handler domain use Binder.
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binder_use(vfio_handler)
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# Allow vfio_handler to check if VFIO is supported
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allow vfio_handler vfio_device:chr_file getattr;
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allow vfio_handler vfio_device:dir r_dir_perms;
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# Allow vfio_handler to bind/unbind platform devices
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allow vfio_handler sysfs:dir r_dir_perms;
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allow vfio_handler sysfs:file rw_file_perms;
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# Allow vfio_handler to write to VM DTBO via a file created by virtualizationservice.
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allow vfio_handler virtualizationservice:fd use;
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allow vfio_handler virtualizationservice_data_file:file write;
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# vfio_handler can only use fd from virtualizationservice, and cannot open files itself
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neverallow vfio_handler virtualizationservice_data_file:file { open create };
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# Allow vfio_handler to search /dev/block for accessing dtbo.img
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allow vfio_handler block_device:dir search;
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allow vfio_handler dtbo_block_device:blk_file r_file_perms;
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# Only vfio_handler can add vfio_handler_service
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neverallow { domain -vfio_handler } vfio_handler_service:service_manager add;
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') # is_flag_enabled(RELEASE_AVF_ENABLE_DEVICE_ASSIGNMENT)
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