cc39f63773
Divide policy into public and private components. This is the first step in splitting the policy creation for platform and non-platform policies. The policy in the public directory will be exported for use in non-platform policy creation. Backwards compatibility with it will be achieved by converting the exported policy into attribute-based policy when included as part of the non-platform policy and a mapping file will be maintained to be included with the platform policy that maps exported attributes of previous versions to the current platform version. Eventually we would like to create a clear interface between the platform and non-platform device components so that the exported policy, and the need for attributes is minimal. For now, almost all types and avrules are left in public. Test: Tested by building policy and running on device. Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c
40 lines
1.1 KiB
Text
40 lines
1.1 KiB
Text
# lmkd low memory killer daemon
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type lmkd, domain, domain_deprecated, mlstrustedsubject;
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type lmkd_exec, exec_type, file_type;
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allow lmkd self:capability { dac_override sys_resource kill };
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# lmkd locks itself in memory, to prevent it from being
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# swapped out and unable to kill other memory hogs.
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# system/core commit b28ff9131363f7b4a698990da5748b2a88c3ed35
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# b/16236289
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allow lmkd self:capability ipc_lock;
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## Open and write to /proc/PID/oom_score_adj
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## TODO: maybe scope this down?
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r_dir_file(lmkd, appdomain)
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allow lmkd appdomain:file write;
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r_dir_file(lmkd, autoplay_app)
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allow lmkd autoplay_app:file write;
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r_dir_file(lmkd, system_server)
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allow lmkd system_server:file write;
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## Writes to /sys/module/lowmemorykiller/parameters/minfree
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r_dir_file(lmkd, sysfs_type)
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allow lmkd sysfs_lowmemorykiller:file w_file_perms;
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# Send kill signals
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allow lmkd appdomain:process sigkill;
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# Clean up old cgroups
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allow lmkd cgroup:dir { remove_name rmdir };
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# Set self to SCHED_FIFO
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allow lmkd self:capability sys_nice;
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allow lmkd proc_zoneinfo:file r_file_perms;
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### neverallow rules
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# never honor LD_PRELOAD
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neverallow * lmkd:process noatsecure;
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