Bug: 10175701
Change-Id: I185df22bdbaafd56725760ec6c71340b67455046

Change-Id: Ided2cf793e94bb58529789c3075f8480c0d0cf4e

OTAs aren't properly labeling /system, which is causing SELinux
breakage. Temporarily put isolated_app.te and untrusted_app.te
into permissive.

Bug: 9878561
Change-Id: Icaf674ad6b3d59cbca3ae796c930c98ab67cae9c

Bug: 9872463
Change-Id: I47eabeace3387afd24c0fd4bee70e77c0a3586d5

Bug: 9859477
Change-Id: Iadd26cac2f318b81701310788bed795dadfa5b6b

This is needed to support "Verify App" functionality.
During side loading, the Verify App functionality reads the APK
to determine if it's safe to install.

Bug: 9863154
Change-Id: I33f6b0fd012f6cb194e253d5d92cf6189d6aa222

/sys was getting labeled as a rootfs file, but according to
genfs_contexts, it's really a sysfs file. This conflict is causing
problems when patch f29c533c49ab1c90eae612b1c454f2c6879a6658 from
system/core is applied.

Change-Id: I3f34c9ee68bedb171ebebfcd356e924c987b58ff

For some reason, the debuggerd socket isn't getting properly
labeled. Work around this bug for now by allowing all domains
to connect to all unix stream sockets.

Bug: 9858255
Change-Id: If994e51b0201ea8cae46341efc76dc71a4e577c8

This is my first attempt at creating an enforcing SELinux domain for
apps, untrusted_apps, and isolated_apps. Much of these rules are based on the
contents of app.te as of commit 11153ef3
with extensive modifications, some of which are included below.

* Allow communication with netd/dnsproxyd, to allow netd to handle
  dns requests
* Allow binder communications with the DNS server
* Allow binder communications with surfaceflinger
* Allow an app to bind to tcp/udp ports
* Allow all domains to read files from the root partition, assuming
  the DAC allows access.

In addition, I added a bunch of "neverallow" rules, to assert that
certain capabilities are never added.

This change has a high probability of breaking someone, somewhere.
If it does, then I'm happy to fix the breakage, rollback this change,
or put untrusted_app into permissive mode.

Change-Id: I83f220135d20ab4f70fbd7be9401b5b1def1fe35

Remove "self:process ptrace" from all SELinux enforced domains.
In general, a process should never need to ptrace itself.
We can add this back to more narrowly scoped domains as needed.

Add a bunch of neverallow assertions to netd.te, to verify that netd
never gets unexpected capabilities.

Change-Id: Ie862dc95bec84068536bb64705667e36210c5f4e

app.te covers a lot of different apps types (platform_app, media_app,
shared_app, release_app, isolated_app, and untrusted_app), all
of which are going to have slightly different security policies.

Separate the different domains from app.te. Over time, these
files are likely to grow substantially, and mixing different domain types
is a recipe for confusion and mistakes.

No functional change.

Change-Id: Ida4e77fadb510f5993eb2d32f2f7649227edff4f

In 0c9708b2, we removed relabelto
from unconfined.te.  This broke debuggerd.  Fixed.

type=1400 audit(1373668537.550:5): avc:  denied  { relabelto } for  pid=44 comm="debuggerd" name="tombstones" dev="mtdblock1" ino=71 scontext=u:r:debuggerd:s0 tcontext=u:object_r:tombstone_data_file:s0 tclass=dir

Change-Id: Ic025cbc030d6e776d9d87b1df3240fdc5f0b53d5

The emulator has been upgraded to ext4, which was the root cause
of bug 9685803. See https://code.google.com/p/android/issues/detail?id=38561 .
As a result, we can reenable installd protections.

This reverts commit 201cfae4.

Bug: 9685803
Change-Id: I4ed47f7aeaef4aac504e13c2ae23fb416e4e6e49

Bug: 9781325
Change-Id: Ib6f6875f690420b59fceb0a32590a2b9ed8dda95

For unlabeled files, revert to DAC rules. This is for backwards
compatibility, as files created before SELinux was in place may
not be properly labeled.

Over time, the number of unlabeled files will decrease, and we can
(hopefully) remove this rule in the future.

To prevent inadvertantly introducing the "relabelto" permission, add
a neverallow domain, and add apps which have a legitimate need to
relabel to this domain.

Bug: 9777552
Change-Id: I71b0ff8abd4925432062007c45b5be85f6f70a88

Allow netd to set ctl.* properties. Currently, mdnsd is broken because
it can't set this property.

Bug: 9777774
Change-Id: I2f32504d77b651e66e0a0067e65a5ed44b427f5a

Change-Id: I129536c3d9f6359228165d8a5ec373780b312c86

This fixes the issue where paid apps failed to install via Google
Play with "Package file has a bad manifest" error. The issue appears
to be caused by vold being prevented by SELinux policy from setting
the setgid bit on the ASEC container directory into which the APK is
decrypted. As a result, the APK is not readable to PackageParser.

Bug: 9736808
Change-Id: I07546a9f9caac3de8b720499bd1bf1604edea0fe

This is breaking the emulator.

Bug: 9685803
Change-Id: Ibd5b312b97d52fdac9289e44a40e9bba07be1c7f

This change enables SELinux security enforcement on the installd
process.

For the installd.te file only, this change is equivalent to reverting
the following commits:

    * 50e37b93
    * 77d4731e

No other changes were required.

Testing: As much as possible, I've tested that package installation
works, from both adb and via Android market. There were no denials
in the kernel dmesg log, and everything appears to be working correctly.

It's quite possible I've missed something. If we experience problems,
I'm happy to roll back this change.

Bug: 9662644
Change-Id: Id93d4ee7b517dfa28c9a0b1d45d936b56892ac0a

This change enables SELinux security enforcement on zygote
(but not zygote spawned apps).

For the zygote.te file only, this change is equivalent to reverting
the following commits:

* 50e37b93
* 77d4731e

No other changes were required.

Testing: As much as possible, I've tested that zygote properly
starts up, and that there's no problem spawning zygote or zygote
apps. There were no denials in the kernel dmesg log, and
everything appears to work correctly. It's quite
possible I've missed something. If we experience problems, I
happy to roll back this change.

Bug: 9657732
Change-Id: Id2a7adcbeebda5d1606cb13470fad6c3fcffd558

This change enables SELinux security enforcement on vold.

For the vold.te file ONLY, this change is conceptually a revert of
77d4731e and
50e37b93, with the following
additional changes:

1) Removal of "allow vold proc:file write;" and
"allow vold self:capability { sys_boot };". As of system/vold
change adfba3626e76c1931649634275d241b226cd1b9a, vold no longer
performs it's own reboots, so these capabilities are no longer
needed.

2) Addition of the powerctl property, which vold contacts to
tell init to reboot.

3) Removal of "allow vold kernel:system module_request;". As of
CTS commit f2cfdf5c057140d9442fcfeb4e4a648e8258b659, Android
devices no longer ship with loadable modules, hence we don't
require this rule.

4) Removal of "fsetid" from "self:capability". Any setuid / setgid
bits SHOULD be cleared if vold is able to change the permissions
of files. IMHO, it was a mistake to ever include this capability in
the first place.

Testing: As much as possible, I've tested filesystem related
functionality, including factory reset and device encryption.
I wasn't able to test fstrim functionality, which is a fairly
new feature.  I didn't see any policy denials in dmesg. It's quite
possible I've missed something. If we experience problems, I
happy to roll back this change.

Bug: 9629920
Change-Id: I683afa0dffe9f28952287bfdb7ee4e0423c2e97a

This change does several things:

1) Restore domain.te to the version present at
cd516a32 . This is the version
currently being distributed in AOSP.

2) Add "allow domain properties_device:file r_file_perms;" to
domain.te, to allow all domains to read /dev/__properties__ .
This change was missing from AOSP.

3) Restore netd.te to the version present at
80c9ba52 . This is the version
currently being distributed in AOSP.

4) Remove anything involving module loading from netd.te. CTS
enforces that Android kernels can't have module loading enabled.

5) Add several new capabilities, plus data file rules, to
netd.te, since netd needs to write to files owned by wifi.

6) Add a new unconfined domain called dnsmasq.te, and allow
transitions from netd to that domain. Over time, we'll tighten up
the dnsmasq.te domain.

7) Add a new unconfined domain called hostapd.te, and allow
transitions from netd to that domain. Over time, we'll tighten up
the hostapd.te domain.

The net effect of these changes is to re-enable SELinux protections
for netd. The policy is FAR from perfect, and allows a lot of wiggle
room, but we can improve it over time.

Testing: as much as possible, I've exercised networking related
functionality, including turning on and off wifi, entering airplane
mode, and enabling tethering and portable wifi hotspots. It's quite
possible I've missed something, and if we experience problems, I
can roll back this change.

Bug: 9618347
Change-Id: I23ff3eebcef629bc7baabcf6962f25f116c4a3c0

In the process of taking a bugreport, "dumpstate -B" will instruct
zygote to fire up com.android.shell, which runs as UID=2000.
This transition was not included in seapp_contexts, so zygote
didn't know how to properly set the context for the shell user.

Add an entry to allow zygote to know what to do with UID=2000
requests.

Bug: 9588981
Change-Id: I2e726be8d58437ef1de3bcbad3b897a97ed18e22

System server needs to be able to tell Zygote to create processes
with differing ids, capabilities, and SELinux security information.
Allow it.

These rules are not in unconfined.te, and as a result, are not
automatically allowed by SELinux in enforcing mode.

Change-Id: I010eaa2b0e0cee5d995e08e6c785cc5e01b2c974

Change-Id: Ic0351c69d67aa3a6f71f505408c53d642626ebb4

* commit '95c960de':
  Clean up remaining denials.

* commit '274d2927':
  Clean up remaining denials.

Bug: 8424461
Change-Id: I8f0b01cdb19b4a479d5de842f4e4844aeab00622

Change-Id: Ide4d5d28e9a1673775b944780677d8c2eb4d7cd6

* commit 'eb2dc6d0':
  Revert "Add the selinux policy version number."

* commit '77d4731e':
  Make all domains unconfined.

* commit '42cabf34':
  Revert "Add the selinux policy version number."

This prevents denials from being generated by the base policy.
Over time, these rules will be incrementally tightened to improve
security.

Change-Id: I4be1c987a5d69ac784a56d42fc2c9063c402de11

This reverts commit b77b3aff.

* commit '92b8f148':
  Move domains into per-domain permissive mode.

* commit '50e37b93':
  Move domains into per-domain permissive mode.