android_system_sepolicy/public/logpersist.te

# android debug logging, logpersist domains
type logpersist, domain;

###
### Neverallow rules
###
### logpersist should NEVER do any of this

# Block device access.
neverallow logpersist dev_type:blk_file { read write };

# ptrace any other app
neverallow logpersist domain:process ptrace;

# Write to files in /data/data or system files on /data except misc_logd_file
neverallow logpersist { app_data_file system_data_file }:dir_file_class_set write;

# Only init is allowed to enter the logpersist domain via exec()
#neverallow { domain -init } logpersist:process transition;
#neverallow * logpersist:process dyntransition;