bb9a388840
system/core commit 331cf2fb7c16b5b25064f8d2f00284105a9b413f created a number of new properties of the form: [ro.boottime.init]: [5294587604] [ro.boottime.InputEventFind]: [10278767840] [ro.boottime.adbd]: [8359267180] ... These properties were assigned the default_prop SELinux label because a better label did not exist. Properties labeled with the default_prop label are readable to any SELinux domain, which is overly broad. bullhead:/ $ getprop -Z ro.boottime.adbd u:object_r:default_prop:s0 Instead, create a new label for the ro.boottime.* properties so we can apply more fine grain read access control to these properties. bullhead:/ $ getprop -Z ro.boottime.adbd u:object_r:boottime_prop:s0 New SELinux property labels have minimal permissions by default. As a result, after this change, ro.boottime.* properties will only be readable to system_server, bootstat, init (because it manages the property space), and "adb root" (because no SELinux permissions are enforced there). Additional read access can be granted as-needed. This is part of a larger effort to implement fine-grain access control on the properties managed by init. Test: Device boots and no SELinux denials on boot. Change-Id: Ibf981cb81898f4356fdc5c1b6f15dd93c0d6d84d
86 lines
2.8 KiB
Plaintext
86 lines
2.8 KiB
Plaintext
type audio_prop, property_type, core_property_type;
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type boottime_prop, property_type;
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type bluetooth_prop, property_type, core_property_type;
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type config_prop, property_type, core_property_type;
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type cppreopt_prop, property_type, core_property_type;
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type ctl_bootanim_prop, property_type;
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type ctl_bugreport_prop, property_type;
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type ctl_console_prop, property_type;
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type ctl_default_prop, property_type;
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type ctl_dumpstate_prop, property_type;
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type ctl_fuse_prop, property_type;
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type ctl_mdnsd_prop, property_type;
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type ctl_rildaemon_prop, property_type;
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type dalvik_prop, property_type, core_property_type;
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type debuggerd_prop, property_type, core_property_type;
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type debug_prop, property_type, core_property_type;
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type default_prop, property_type, core_property_type;
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type device_logging_prop, property_type;
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type dhcp_prop, property_type, core_property_type;
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type dumpstate_options_prop, property_type;
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type dumpstate_prop, property_type, core_property_type;
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type ffs_prop, property_type, core_property_type;
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type fingerprint_prop, property_type, core_property_type;
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type hwservicemanager_prop, property_type;
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type logd_prop, property_type, core_property_type;
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type logpersistd_logging_prop, property_type;
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type log_prop, property_type, log_property_type;
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type log_tag_prop, property_type, log_property_type;
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type mmc_prop, property_type;
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type net_radio_prop, property_type, core_property_type;
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type nfc_prop, property_type, core_property_type;
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type overlay_prop, property_type;
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type pan_result_prop, property_type, core_property_type;
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type persist_debug_prop, property_type, core_property_type;
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type powerctl_prop, property_type, core_property_type;
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type radio_prop, property_type, core_property_type;
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type restorecon_prop, property_type, core_property_type;
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type safemode_prop, property_type;
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type shell_prop, property_type, core_property_type;
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type system_prop, property_type, core_property_type;
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type system_radio_prop, property_type, core_property_type;
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type vold_prop, property_type, core_property_type;
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type wifi_log_prop, property_type, log_property_type;
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type wifi_prop, property_type;
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allow property_type tmpfs:filesystem associate;
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###
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### Neverallow rules
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###
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# core_property_type should not be used for new properties or
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# device specific properties. Properties with this attribute
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# are readable to everyone, which is overly broad and should
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# be avoided.
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# New properties should have appropriate read / write access
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# control rules written.
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neverallow * {
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core_property_type
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-audio_prop
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-bluetooth_prop
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-config_prop
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-cppreopt_prop
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-dalvik_prop
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-debuggerd_prop
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-debug_prop
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-default_prop
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-dhcp_prop
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-dumpstate_prop
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-ffs_prop
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-fingerprint_prop
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-logd_prop
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-net_radio_prop
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-nfc_prop
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-pan_result_prop
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-persist_debug_prop
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-powerctl_prop
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-radio_prop
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-restorecon_prop
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-shell_prop
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-system_prop
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-system_radio_prop
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-vold_prop
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}:file no_rw_file_perms;
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