2013-12-06 01:55:34 +01:00
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# lmkd low memory killer daemon
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2015-11-03 18:54:39 +01:00
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type lmkd, domain, domain_deprecated, mlstrustedsubject;
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2013-12-06 01:55:34 +01:00
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type lmkd_exec, exec_type, file_type;
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init_daemon_domain(lmkd)
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2014-02-13 21:19:50 +01:00
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2014-02-28 00:38:45 +01:00
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allow lmkd self:capability { dac_override sys_resource kill };
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2014-02-13 21:19:50 +01:00
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2014-07-16 20:45:51 +02:00
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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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2014-02-13 21:19:50 +01:00
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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, 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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allow lmkd sysfs_lowmemorykiller:file w_file_perms;
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2014-03-05 02:15:13 +01:00
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# Send kill signals
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allow lmkd appdomain:process sigkill;
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2014-07-15 02:39:15 +02:00
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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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2014-07-17 03:42:36 +02:00
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### neverallow rules
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# never honor LD_PRELOAD
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neverallow domain lmkd:process noatsecure;
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