platform_system_sepolicy/private/mediaprovider.te

###
### A domain for android.process.media, which contains both
### MediaProvider and DownloadProvider and associated services.
###

typeattribute mediaprovider coredomain;
app_domain(mediaprovider)

# DownloadProvider accesses the network.
net_domain(mediaprovider)

# DownloadProvider uses /cache.
allow mediaprovider cache_file:dir create_dir_perms;
allow mediaprovider cache_file:file create_file_perms;
# /cache is a symlink to /data/cache on some devices. Allow reading the link.
allow mediaprovider cache_file:lnk_file r_file_perms;
# mediaprovider searches through /cache looking for orphans
# Ignore denials to /cache/recovery and /cache/backup.
dontaudit mediaprovider cache_private_backup_file:dir getattr;
dontaudit mediaprovider cache_recovery_file:dir getattr;

# Access external sdcards through /mnt/media_rw
allow mediaprovider { mnt_media_rw_file }:dir search;

allow mediaprovider app_api_service:service_manager find;
allow mediaprovider audioserver_service:service_manager find;
allow mediaprovider drmserver_service:service_manager find;
allow mediaprovider mediaextractor_service:service_manager find;
allow mediaprovider mediaserver_service:service_manager find;

# Allow MediaProvider to read/write cached ringtones (opened by system).
allow mediaprovider ringtone_file:file { getattr read write };

# MtpServer uses /dev/mtp_usb
allow mediaprovider mtp_device:chr_file rw_file_perms;

# MtpServer uses /dev/usb-ffs/mtp
allow mediaprovider functionfs:dir search;
allow mediaprovider functionfs:file rw_file_perms;

# MtpServer sets sys.usb.ffs.mtp.ready
set_prop(mediaprovider, ffs_prop)
set_prop(mediaprovider, exported_ffs_prop)