5e37271df8
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
60 lines
1.7 KiB
Text
60 lines
1.7 KiB
Text
# storaged daemon
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type storaged, domain, coredomain, mlstrustedsubject;
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type storaged_exec, system_file_type, exec_type, file_type;
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init_daemon_domain(storaged)
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# Read access to pseudo filesystems
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r_dir_file(storaged, domain)
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# Read /proc/uid_io/stats
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allow storaged proc_uid_io_stats:file r_file_perms;
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# Read /data/system/packages.list
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allow storaged system_data_file:file r_file_perms;
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# Store storaged proto file
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allow storaged storaged_data_file:dir rw_dir_perms;
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allow storaged storaged_data_file:file create_file_perms;
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userdebug_or_eng(`
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# Read access to debugfs
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allow storaged debugfs_mmc:dir search;
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allow storaged debugfs_mmc:file r_file_perms;
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')
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# Needed to provide debug dump output via dumpsys pipes.
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allow storaged shell:fd use;
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allow storaged shell:fifo_file write;
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# Needed for GMScore to call dumpsys storaged
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allow storaged priv_app:fd use;
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allow storaged { privapp_data_file app_data_file }:file write;
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allow storaged permission_service:service_manager find;
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# Binder permissions
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add_service(storaged, storaged_service)
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binder_use(storaged)
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binder_call(storaged, system_server)
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hal_client_domain(storaged, hal_health)
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# Implements a dumpsys interface.
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allow storaged dumpstate:fd use;
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# use a subset of the package manager service
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allow storaged package_native_service:service_manager find;
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# Kernel does extra check on CAP_DAC_OVERRIDE for libbinder when storaged is
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# running as root. See b/35323867 #3.
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dontaudit storaged self:global_capability_class_set { dac_override dac_read_search };
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# For collecting bugreports.
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allow storaged dumpstate:fifo_file write;
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###
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### neverallow
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###
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neverallow storaged domain:process ptrace;
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neverallow storaged self:capability_class_set *;
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