platform_system_sepolicy/zygote.te

# zygote
type zygote, domain;
type zygote_exec, exec_type, file_type;

init_daemon_domain(zygote)
typeattribute zygote mlstrustedsubject;
# Override DAC on files and switch uid/gid.
allow zygote self:capability { dac_override setgid setuid };
# Drop capabilities from bounding set.
allow zygote self:capability setpcap;
# Switch SELinux context to app domains.
allow zygote system:process dyntransition;
allow zygote appdomain:process dyntransition;
# Allow zygote to read + write app data dirs (b/10455872 and b/10498304)
allow zygote appdomain:dir { getattr search };
allow zygote appdomain:file { r_file_perms write };
# Move children into the peer process group.
allow zygote system:process { getpgid setpgid };
allow zygote appdomain:process { getpgid setpgid };
# Write to system data.
allow zygote system_data_file:dir rw_dir_perms;
allow zygote system_data_file:file create_file_perms;
allow zygote dalvikcache_data_file:dir rw_dir_perms;
allow zygote dalvikcache_data_file:file { create_file_perms x_file_perms };
# Execute dexopt.
allow zygote system_file:file x_file_perms;
# Control cgroups.
allow zygote cgroup:dir create_dir_perms;
allow zygote self:capability sys_admin;
# Check validity of SELinux context before use.
selinux_check_context(zygote)
# Check SELinux permissions.
selinux_check_access(zygote)
# Read /seapp_contexts and /data/security/seapp_contexts
security_access_policy(zygote)

# Setting up /storage/emulated.
allow zygote rootfs:dir mounton;
allow zygote sdcard_type:dir { write search setattr create add_name mounton };
dontaudit zygote self:capability fsetid;
allow zygote tmpfs:dir { write create add_name setattr mounton search };
allow zygote tmpfs:filesystem mount;
allow zygote labeledfs:filesystem remount;

# Handle --invoke-with command when launching Zygote with a wrapper command.
allow zygote zygote_exec:file { execute_no_trans open };