blob: df8208f71b8c45423c9ee1911aec42fd47f6bc06 [file] [log] [blame]
# lmkd low memory killer daemon
type lmkd, domain;
type lmkd_exec, exec_type, file_type;
init_daemon_domain(lmkd)
allow lmkd self:capability { dac_override sys_resource kill };
# lmkd locks itself in memory, to prevent it from being
# swapped out and unable to kill other memory hogs.
# system/core commit b28ff9131363f7b4a698990da5748b2a88c3ed35
# b/16236289
allow lmkd self:capability ipc_lock;
## Open and write to /proc/PID/oom_score_adj
## TODO: maybe scope this down?
r_dir_file(lmkd, appdomain)
allow lmkd appdomain:file write;
r_dir_file(lmkd, system_server)
allow lmkd system_server:file write;
## Writes to /sys/module/lowmemorykiller/parameters/minfree
allow lmkd sysfs_lowmemorykiller:file w_file_perms;
# Send kill signals
allow lmkd appdomain:process sigkill;
# Clean up old cgroups
allow lmkd cgroup:dir { remove_name rmdir };
# Set self to SCHED_FIFO
allow lmkd self:capability sys_nice;
### neverallow rules
# never honor LD_PRELOAD
neverallow domain lmkd:process noatsecure;