1# Domain for the otapreopt executable, running under postinstall_dexopt
2#
3# Note: otapreopt is a driver for dex2oat, and reuses parts of installd. As such,
4# this is derived and adapted from installd.te.
5
6type postinstall_dexopt, domain;
7
8# init_daemon_domain(otapreopt)
9allow postinstall_dexopt self:capability { chown dac_override fowner setgid setuid };
10
11allow postinstall_dexopt postinstall_file:dir getattr;
12allow postinstall_dexopt proc:file { getattr open read };
13allow postinstall_dexopt tmpfs:file read;
14
15# Note: /data/ota is created by init (see system/core/rootdir/init.rc) to avoid giving access
16# here and having to relabel the directory.
17
18# Read app data (APKs) as input to dex2oat.
19r_dir_file(postinstall_dexopt, apk_data_file)
20# Access to app oat directory.
21r_dir_file(postinstall_dexopt, dalvikcache_data_file)
22
23# Read profile data.
24allow postinstall_dexopt user_profile_data_file:dir { getattr search };
25allow postinstall_dexopt user_profile_data_file:file r_file_perms;
26
27# Write to /data/ota(/*). Create symlinks in /data/ota(/*)
28allow postinstall_dexopt ota_data_file:dir create_dir_perms;
29allow postinstall_dexopt ota_data_file:file create_file_perms;
30allow postinstall_dexopt ota_data_file:lnk_file create_file_perms;
31
32# Need to write .b files, which are dalvikcache_data_file, not ota_data_file.
33# TODO: See whether we can apply ota_data_file?
34allow postinstall_dexopt dalvikcache_data_file:dir rw_dir_perms;
35allow postinstall_dexopt dalvikcache_data_file:file create_file_perms;
36
37# Allow labeling of files under /data/app/com.example/oat/
38# TODO: Restrict to .b suffix?
39allow postinstall_dexopt dalvikcache_data_file:dir relabelto;
40allow postinstall_dexopt dalvikcache_data_file:file { relabelto link };
41
42allow postinstall_dexopt selinuxfs:dir r_dir_perms;
43
44# Check validity of SELinux context before use.
45selinux_check_context(postinstall_dexopt)
46selinux_check_access(postinstall_dexopt)
47
48# Run dex2oat/patchoat in its own sandbox.
49# We have to manually transition, as we don't have an entrypoint.
50domain_auto_trans(postinstall_dexopt, postinstall_file, dex2oat)
51
52# installd wants to know about our child.
53allow postinstall_dexopt installd:process sigchld;
54
55# Allow otapreopt to use file descriptors from otapreopt_chroot.
56# TODO: Probably we can actually close file descriptors...
57allow postinstall_dexopt otapreopt_chroot:fd use;
58