platform_system_sepolicy/sdcardd.te

type sdcardd, domain;
permissive sdcardd;
type sdcardd_exec, exec_type, file_type;

init_daemon_domain(sdcardd)

allow sdcardd cgroup:dir create_dir_perms;
allow sdcardd fuse_device:chr_file rw_file_perms;
allow sdcardd rootfs:dir mounton;
allow sdcardd sdcard_type:filesystem mount;
allow sdcardd self:capability { setuid setgid dac_override sys_admin sys_resource };

type_transition sdcardd system_data_file:{ dir file } media_rw_data_file;
allow sdcardd media_rw_data_file:dir create_dir_perms;
allow sdcardd media_rw_data_file:file create_file_perms;

# Read /data/system/packages.list.
allow sdcardd system_data_file:file r_file_perms;

# Compatibility for existing devices with /data/media in system_data_file.
# TODO: Remove these lines after we have guaranteed that /data/media has been relabeled to media_rw_data_file.
allow sdcardd system_data_file:dir  create_dir_perms;
allow sdcardd system_data_file:file create_file_perms;