Let Zygote talk to init

Change-Id: I31ee0c105c11195873374146daf6c5647975b581
sepolicy: Fix a few denials

 * Zygote needs to set system properties
 * Installd needs to rename files

Change-Id: Ic570830cb4fcc3c0806ae775b9258350d2c90d24
Add a domain for the recovery console.

Define a domain for use by the recovery init.rc file for
/sbin/recovery.  Start with a copy of the kernel domain
rules since that is what /sbin/recovery was previously running in,
and then add rules as appropriate.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Allow recovery to execute ashmem_device and tmpfs.

Requires execmem and ashmem_device:chr_file execute similar to bootanim
presumably for the display.

Did not see any cache_file execute denials and do not see any
exec of /cache files in the code, only reading/interpreting scripts,
so I removed cache_file rx_file_perms.

Did not see any tmpfs execute denials in /proc/last_kmsg but the
source code appears to extract the update-binary to a tmpfs mount
in /tmp and then exec it.  So I retained that rule.

Tested with adb sideload.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

ashmem_device is a character device, not a regular file.

Change-Id: I9b9ac1a383ac2ffdaf2fc62cb11ed026505ed924
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
sepolicy: Allow vold to use rootfs entrypoint

 * For recovery

Change-Id: I57dbe3b0a504b63551a69046d36472bb20af3963
Allow installd to restorecon /data/data.

Ability to relabel from/to any of the types that can be assigned
to /data/data directories as per seapp_contexts type= assignments.

Change-Id: I05e8b438950ddb908e46c9168ea6ee601e6d674f
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Make bluetooth, nfc, radio and shell adb-installable

bluetooth, nfc, radio and shell are not explicitly declared
in installd.te. This prevents applications in those group
from upgrading by "adb install -r".

You can reproduce the issue by following step:
 1. adb pull /system/priv-app/Shell.apk
 2. adb install -r Shell.apk
 3. install failed with the error log blow

[Error in logcat]
E/installd(  338): couldn't symlink directory '/data/data/com.android.shell/lib' -> '/data/app-lib/com.android.shell-1': Permission denied
E/installd(  338): couldn't symlink directory '/data/data/com.android.shell/lib' -> '/data/app-lib/Shell': Permission denied

[Error in dmesg]
<5>[  112.053301] type=1400 audit(1387412796.071:10): avc:  denied  { create } for  pid=337 comm="installd" name="lib" scontext=u:r:installd:s0 tcontext=u:object_r:shell_data_file:s0 tclass=lnk_file

This operation fails only if the app belongs to any of the
groups specified in the commit title.

Change-Id: I7572df9fb6e471fad34f61137f0eeeda4c82659d
Let installd relabel the lib symlinks

Change-Id: I18fa4f285c34389f92faf8182c28d8603f28576f
Get rid of separate platform_app_data_file type.

The original concept was to allow separation between /data/data/<pkgdir>
files of "platform" apps (signed by one of the four build keys) and
untrusted apps.  But we had to allow read/write to support passing of
open files via Binder or local socket for compatibilty, and it seems
that direct open by pathname is in fact used in Android as well,
only passing the pathname via Binder or local socket.  So there is no
real benefit to keeping it as a separate type.

Retain a type alias for platform_app_data_file to app_data_file until
restorecon /data/data support is in place to provide compatibility.

Change-Id: Ic15066f48765322ad40500b2ba2801bb3ced5489
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Adding permissions needed to remove cache

During removing cache data using Zipper application, I found violation logs.

avc:  denied  { write } for  pid=198 comm="installd" name="cache" dev="mmcblk0p29" ino=81680 scontext=u:r:installd:s0 tcontext=u:object_r:download_file:s0 tclass=dir
avc:  denied  { remove_name } for  pid=198 comm="installd" name="downloadfile.apk" dev="mmcblk0p29" ino=82247 scontext=u:r:installd:s0 tcontext=u:object_r:download_file:s0 tclass=dir
avc:  denied  { unlink } for  pid=198 comm="installd" name="downloadfile.apk" dev="mmcblk0p29" ino=82247 scontext=u:r:installd:s0 tcontext=u:object_r:download_file:s0 tclass=file

Reproduction path is like below
1. Downloading Zipper application from Google Play (I used Zipper 1.9.9.2)
2. Clicking option and clicking "removing cache" button
3. Select "yes"
4. Violation show up

Change-Id: I7993f1d20e3aa4c3e19c4aba9b4bef6760831a87
Get rid of separate download_file type.

This appears to have been created to allow untrusted_app to
access DownloadProvider cache files without needing to allow
open access to platform_app_data_file.  Now that platform_app_data_file
is gone, there is no benefit to having this type.

Retain a typealias for download_file to app_data_file until
restorecon /data/data support is in place to provide compatibility.

This change depends on:
https://android-review.googlesource.com/#/c/87801/

Change-Id: Iab3c99d7d5448bdaa5c1e03a98fb6163804e1ec4
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
sepolicy: Fix more denials

 * Zygote needs to fork certan things
 * Installd needs to rename files

Change-Id: I643eace5af71dbd45a3c55518c516ea45bdefe07
Introduce asec_public_file type.

This new type will allow us to write finer-grained
policy concerning asec containers. Some files of
these containers need to be world readable.

Change-Id: Iefee74214d664acd262edecbb4f981d633ff96ce
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>