tequilaOS/platform_system_sepolicy
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Do not allow isolated_app to directly open app data files.

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Only allow it to read/write/stat already open app data files
received via Binder or local socket IPC.

Change-Id: Ie66f240e109410a17aa93d9d5dea4c2b87d47009
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
This commit is contained in:
Stephen Smalley 2014-11-21 09:28:42 -08:00 committed by Nick Kralevich
parent 6963655194
commit 7d7151647f
2 changed files with 8 additions and 2 deletions
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4
app.te
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@ -46,8 +46,8 @@ allow appdomain appdomain:fifo_file rw_file_perms;
allow appdomain surfaceflinger:unix_stream_socket { read write setopt getattr getopt shutdown };
# App sandbox file accesses.
allow appdomain app_data_file:dir create_dir_perms;
allow appdomain app_data_file:notdevfile_class_set create_file_perms;
allow { appdomain -isolated_app } app_data_file:dir create_dir_perms;
allow { appdomain -isolated_app } app_data_file:notdevfile_class_set create_file_perms;
# lib subdirectory of /data/data dir is system-owned.
allow appdomain system_data_file:dir r_dir_perms;

6
isolated_app.te
View file

@ -12,6 +12,12 @@
type isolated_app, domain;
app_domain(isolated_app)
# Access already open app data files received over Binder or local socket IPC.
allow isolated_app app_data_file:file { read write getattr };
# Isolated apps should not directly open app data files themselves.
neverallow isolated_app app_data_file:file open;
# Isolated apps shouldn't be able to access the driver directly.
neverallow isolated_app gpu_device:file { rw_file_perms execute };