4a478c47f4
Vendor and system components are only allowed to share files by
passing open FDs over HIDL. Ban all directory access and all file
accesses other than what can be applied to an open file:
stat/read/write/append.
This commit marks core data types as core_data_file_type and bans
access to non-core domains with an exemption for apps. A temporary
exemption is also granted to domains that currently rely on
access with TODOs and bug number for each exemption.
Bug: 34980020
Test: Build and boot Marlin. Make phone call, watch youtube video.
No new denials observed.
Change-Id: I320dd30f9f0a5bf2f9bb218776b4bccdb529b197
41 lines
1.5 KiB
Text
41 lines
1.5 KiB
Text
# Domain for update_engine daemon.
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type update_engine, domain, domain_deprecated, update_engine_common;
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type update_engine_exec, exec_type, file_type;
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net_domain(update_engine);
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# Read/[write] to /proc/net/xt_qtaguid/ctrl and /dev/xt_qtaguid to tag network
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# sockets.
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allow update_engine qtaguid_proc:file rw_file_perms;
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allow update_engine qtaguid_device:chr_file r_file_perms;
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# Following permissions are needed for update_engine.
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allow update_engine self:process { setsched };
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allow update_engine self:capability { fowner sys_admin };
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allow update_engine kmsg_device:chr_file w_file_perms;
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allow update_engine update_engine_exec:file rx_file_perms;
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wakelock_use(update_engine);
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# Ignore these denials.
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dontaudit update_engine kernel:process setsched;
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# Allow using persistent storage in /data/misc/update_engine.
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allow update_engine update_engine_data_file:dir { create_dir_perms };
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allow update_engine update_engine_data_file:file { create_file_perms };
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# Don't allow kernel module loading, just silence the logs.
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dontaudit update_engine kernel:system module_request;
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# Register the service to perform Binder IPC.
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binder_use(update_engine)
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add_service(update_engine, update_engine_service)
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# Allow update_engine to call the callback function provided by priv_app.
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binder_call(update_engine, priv_app)
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# Read OTA zip file at /data/ota_package/.
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allow update_engine ota_package_file:file r_file_perms;
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allow update_engine ota_package_file:dir r_dir_perms;
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# Use Boot Control HAL
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hal_client_domain(update_engine, hal_bootctl)
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