98de322a03
We plan on migrating MetricsLogger to write to statsd socket. So we need to allow zygote, which writes to logd using MetricsLogger, to also be able to statsd. We also re-locate some sepolicies to write to statsd socket in their respective policy definitions. Bug: 110537511 Test: no failure/violations observed Change-Id: I21fd352a25ed946516f9a45ac3b5e9bf97b059bc
58 lines
1.7 KiB
Text
58 lines
1.7 KiB
Text
# lmkd low memory killer daemon
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type lmkd, domain, mlstrustedsubject;
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type lmkd_exec, system_file_type, exec_type, file_type;
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allow lmkd self:global_capability_class_set { dac_override dac_read_search 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:global_capability_class_set 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, 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_lowmemorykiller)
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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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# Allow to read memcg stats
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allow lmkd cgroup:file r_file_perms;
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# Set self to SCHED_FIFO
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allow lmkd self:global_capability_class_set sys_nice;
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allow lmkd proc_zoneinfo:file r_file_perms;
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# Set sys.lmk.* properties.
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set_prop(lmkd, system_lmk_prop)
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# live lock watchdog process allowed to look through /proc/
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allow lmkd domain:dir { search open read };
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allow lmkd domain:file { open read };
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# live lock watchdog process allowed to dump process trace and
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# reboot because orderly shutdown may not be possible.
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allow lmkd proc_sysrq:file rw_file_perms;
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# Read /proc/meminfo
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allow lmkd proc_meminfo:file r_file_perms;
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# Allow lmkd to write to statsd.
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unix_socket_send(lmkd, statsdw, statsd)
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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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