platform_system_sepolicy/platform_app.te
Stephen Smalley e13fabd75a Label /data/media with its own type and allow access.
/data/media presently is left in system_data_file, which requires
anything that wants to write to it to be able to write to system_data_file.
Introduce a new type for /data/media, media_rw_data_file (to match
the media_rw UID assigned to it and distinguish it from /data/misc/media
which has media UID and media_data_file type), and allow access to it.

We allow this for all platform app domains as WRITE_MEDIA_STORAGE permission is granted
to signature|system.  We should not have to allow it to untrusted_app.

Set up type transitions in sdcardd to automatically label any directories
or files it creates with the new type.

Change-Id: I5c7e6245b854a9213099e40a41d9583755d37d42
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2013-12-17 16:11:23 -05:00

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###
### Apps signed with the platform key.
###
type platform_app, domain;
permissive platform_app;
app_domain(platform_app)
platform_app_domain(platform_app)
# Access the network.
net_domain(platform_app)
# Access bluetooth.
bluetooth_domain(platform_app)
# Write to /cache.
allow platform_app cache_file:dir rw_dir_perms;
allow platform_app cache_file:file create_file_perms;
# Read from /data/local.
allow platform_app shell_data_file:dir search;
allow platform_app shell_data_file:file { open getattr read };
allow platform_app shell_data_file:lnk_file read;
# Populate /data/app/vmdl*.tmp, /data/app-private/vmdl*.tmp files
# created by system server.
allow platform_app { apk_tmp_file apk_private_tmp_file }:file rw_file_perms;
allow platform_app apk_private_data_file:dir search;
# ASEC
allow platform_app asec_apk_file:dir create_dir_perms;
allow platform_app asec_apk_file:file create_file_perms;
# Access download files.
allow platform_app download_file:file rw_file_perms;
# Allow BackupManagerService to backup all app domains
allow platform_app appdomain:fifo_file write;
#
# Rules for all platform app domains.
#
# App sandbox file accesses.
allow platformappdomain platform_app_data_file:dir create_dir_perms;
allow platformappdomain platform_app_data_file:notdevfile_class_set create_file_perms;
# App sdcard file accesses
allow platformappdomain sdcard_type:dir create_dir_perms;
allow platformappdomain sdcard_type:file create_file_perms;
# Access to /data/media.
allow platformappdomain media_rw_data_file:dir create_dir_perms;
allow platformappdomain media_rw_data_file:file create_file_perms;