e6971f1330
Bug: 236691128 Test: atest SeamendcHostTest Change-Id: I3ce2845f259afb29b80e2d9b446aa94e64ef8902
78 lines
2.6 KiB
Text
78 lines
2.6 KiB
Text
###
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### SDK Sandbox process.
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###
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### This file defines the security policy for the sdk sandbox processes.
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type sdk_sandbox;
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###
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### neverallow rules
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###
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neverallow sdk_sandbox { app_data_file privapp_data_file sdk_sandbox_data_file }:file { execute execute_no_trans };
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# Receive or send uevent messages.
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neverallow sdk_sandbox domain:netlink_kobject_uevent_socket *;
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# Receive or send generic netlink messages
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neverallow sdk_sandbox domain:netlink_socket *;
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# Too much leaky information in debugfs. It's a security
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# best practice to ensure these files aren't readable.
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neverallow sdk_sandbox debugfs:file read;
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# execute gpu_device
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neverallow sdk_sandbox gpu_device:chr_file execute;
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# access files in /sys with the default sysfs label
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neverallow sdk_sandbox sysfs:file *;
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# Avoid reads from generically labeled /proc files
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# Create a more specific label if needed
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neverallow sdk_sandbox proc:file { no_rw_file_perms no_x_file_perms };
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# Directly access external storage
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neverallow sdk_sandbox { sdcard_type media_rw_data_file }:file {open create};
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neverallow sdk_sandbox { sdcard_type media_rw_data_file }:dir search;
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# Avoid reads to proc_net, it contains too much device wide information about
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# ongoing connections.
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neverallow sdk_sandbox proc_net:file no_rw_file_perms;
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# SDK sandbox processes have their own storage not related to app_data_file or privapp_data_file
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neverallow sdk_sandbox { app_data_file privapp_data_file }:dir no_rw_file_perms;
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neverallow sdk_sandbox { app_data_file privapp_data_file }:file no_rw_file_perms;
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# SDK sandbox processes don't have any access to external storage
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neverallow sdk_sandbox { media_rw_data_file }:dir no_rw_file_perms;
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neverallow sdk_sandbox { media_rw_data_file }:file no_rw_file_perms;
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neverallow { sdk_sandbox } tmpfs:dir no_rw_file_perms;
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neverallow sdk_sandbox hal_drm_service:service_manager find;
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# Only certain system components should have access to sdk_sandbox_system_data_file
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# sdk_sandbox only needs search. Restricted in follow up neverallow rule.
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neverallow {
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domain
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-init
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-installd
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-system_server
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-vold_prepare_subdirs
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} sdk_sandbox_system_data_file:dir { relabelfrom };
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neverallow {
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domain
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-init
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-installd
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-sdk_sandbox
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-system_server
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-vold_prepare_subdirs
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-zygote
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} sdk_sandbox_system_data_file:dir { create_dir_perms relabelto };
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# sdk_sandbox only needs to traverse through the sdk_sandbox_system_data_file
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neverallow sdk_sandbox sdk_sandbox_system_data_file:dir ~{ getattr search };
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# Only dirs should be created at sdk_sandbox_system_data_file level
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neverallow { domain -init } sdk_sandbox_system_data_file:file *;
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