Commit graph

139 commits

Author SHA1 Message Date
Jiyong Park
db9b8670b3 Remove unnecessary entries from microdroid vendor file_contexts
Bug: 225148395
Test: watch TH
Change-Id: Id368605c396fdb79c0044c407abb08ab8c90fa32
2022-04-05 16:41:26 +09:00
Treehugger Robot
c2b73ca1b2 Merge "microdroid: dont audit access to event-log-tags" 2022-03-24 22:16:47 +00:00
Victor Hsieh
e82248bcb0 Merge "Allow odrefresh to use userfaultfd" 2022-03-24 15:15:17 +00:00
Alan Stokes
f69f5a6512 Remove redundant neverallow
commit 7fd8933f0c removed this from host
sepolicy. It's redundant here as well.

Bug: 223596375
Test: Builds
Change-Id: I39d7432c6e31f49de5eb8dca8acc7e9c5d190617
2022-03-24 11:56:20 +00:00
Victor Hsieh
6c874fb295 Allow odrefresh to use userfaultfd
This isn't really used at the moment, but since the decision was to keep
the capability for future ART change, we should also allow it in CompOS
for consistency.

While I'm on in, rearrange the policy to group mirrored policies
together.

Bug: 209488862
Test: None
Change-Id: Id6afafc42005e711127a1e0831d4dd03e48959eb
2022-03-23 17:21:22 -07:00
Oleg Matcovschi
f21542906d microdroid: dont audit access to event-log-tags
Bug: 225223271
Test: run microdroid, confirm no denial messages
Signed-off-by: Oleg Matcovschi <omatcovschi@google.com>
Change-Id: I505402c5ff886c18c06133825f9a7ced84c17c1f
2022-03-23 08:55:19 -07:00
Inseob Kim
85091cd806 Allow init to relabelto console_device
Init will try restorecon /dev/console, together with /dev, at the second
stage boot.

Bug: 193118220
Test: atest MicrodroidHostTestCases
Change-Id: Ie9796368b54bb0773eabf5ff6feb2b4aa41d0bfa
2022-03-22 22:11:03 +09:00
Alan Stokes
7bde36e94e Remove redundant sepolicy
We don't use MLS in Microdroid, so we don't need MLS rules, nor
mlstrusted[subject|object] labels. (We keep one MLS rule to satisfy
checkpolicy.)

A lot of attributes are unused in Microdroid, so we can remove their
declarations and any references to them. (That may not make the
compiled policy smaller, since hopefully they get optimised out
anyway, but it means there is less policy for humans to deal with.)

Remove labels that relate only to apps, which we don't have - MAC
permissions, run-as, seapp_contexts.

In passing, fix a comment snafu in both system & microdroid policy.

Bug: 223596375
Test: Run staged-apex-compile & compos_verify, no denials
Test: atest MicrodroidTests MicrodroidHostTestCases
Change-Id: Ifd3589945a2d8b4c0361e00eec5678795513fd8c
2022-03-15 15:43:50 +00:00
Andrew Scull
629e12499a Merge "Define access to AVF chosen node properties" 2022-03-14 17:06:24 +00:00
Andrew Scull
2dba72540c Define access to AVF chosen node properties
Give microdroid_manager and the DICE HAL access to the AVF chosen node
properties that are used to indicate that the VM is booting in strict
more and that the current boot is provisioning a new VM instance.

Bug: 221051866
Bug: 217376291
Test: atest MicrodroidTests
Change-Id: Ie8451fc80671557086f8d825ad01600f9cb4557a
2022-03-14 11:38:45 +00:00
Inseob Kim
35e87367b8 microdroid: Set mls_cats to 1
Because MLS isn't really used in microdroid, setting it to 1 may help
improve performance a bit.

Bug: 223596384
Test: atest MicrodroidTests
Change-Id: Iace4a45ccda98e34fbf82b16ff2096a53b543132
2022-03-10 13:16:13 +09:00
Victor Hsieh
2a017b61a6 Allow dex2oat to use userfaultfd in microdroid
Bug: 209488862
Test: Follow instructions in b/209488862#comment12, compilation can
      only succeed with this patch
Change-Id: I6475a1be0db635de96b9f8fdbf9dd3a76c3a759b
2022-03-08 22:29:43 +00:00
Alan Stokes
ff648192d9 Block crash_dump from no_crash_dump_domain
These domains already can't transition to crash_dump, but also need to
make sure crash_dump can't be run and pointed at them.

Bug: 218494522
Test: Builds
Change-Id: I76f88faf8ff4c88e85eaf6a8db546dc644a71928
2022-02-24 16:36:40 +00:00
Treehugger Robot
275836a9af Merge "Dontaudit property access by odrefresh in the VM" 2022-02-23 12:07:45 +00:00
Victor Hsieh
e2156d071e Dontaudit property access by odrefresh in the VM
Bug: 210030607
Test: composd_cmd test-compile, no more denials in vm.log
Change-Id: I728398f812680354b813d03e0d23eecca330c47e
2022-02-22 23:10:04 +00:00
Alan Stokes
0c5449b193 Remove now-unused permissions
CompOS no longer talks directly to DICE (compos_key_helper does). odsign
no longer promotes or deletes instance CompOS files, and the key files
don't exist any more.

Bug: 218494522
Test: Manual; trigger compilation, reboot & watch odsign
Change-Id: Ibc251180122e6e4789b4be5669da3da67517b49c
2022-02-22 17:40:05 +00:00
Treehugger Robot
5273f3a486 Merge "Modify sepolicy for compos key changes" 2022-02-18 09:03:30 +00:00
Treehugger Robot
92ec679578 Merge "Remove needless bootloader_prop rule" 2022-02-17 15:51:31 +00:00
Andrew Scull
9738638c03 Let the DICE HAL getattr the device node
Make sure all the permissions are granted to let the HAL do its work
properly.

Bug: 214231981
Test: atest MicrodroidTestApp
Change-Id: I54c633b8163ea313c87856fb0513074a76ac86a1
2022-02-17 12:35:22 +00:00
Alan Stokes
766caba5de Modify sepolicy for compos key changes
Add the compos_key_helper domain for the process which has access to
the signing key, make sure it can't be crashdumped. Also extend that
protection to diced & its HAL.

Rename compos_verify_key to compos_verify, because it doesn't verify
keys any more.

Move exec types used by Microdroid to file.te in the host rather than
their own dedicated files.

Bug: 218494522
Test: atest CompOsSigningHostTest CompOsDenialHostTest
Change-Id: I942667355d8ce29b3a9eb093e0b9c4f6ee0df6c1
2022-02-17 12:14:40 +00:00
Andrew Scull
12bd3d9d2e Remove needless bootloader_prop rule
Bootloader properties are available to all domains so don't need special
policy rules for microdroid_manager.

Test: atest MicrodroidTests
Change-Id: I0ccf6b28467a47c0f3cf7715b9ff34d01e8ac970
2022-02-16 09:40:29 +00:00
Andrew Scull
b13117f3ba Add ro.boot.microdroid.app_debuggable
This property is set in the bootconfig to reflect the debuggability of
the payload app. It is consumed microdroid_manager as a DICE input and
by compos to make choices based on the debuggability, e.g. not doing
test builds in non-debug states.

Bug: 219740340
Test: atest ComposHostTestCases
Test: atest MicrodroidTests
Change-Id: If84710f1fdbab957f5d19ce6ba3daad7e3e65935
2022-02-16 09:40:27 +00:00
Inseob Kim
74caef3591 Add microdroid sepolicy test support
MicrodroidHostTestCases will pull the VM's sepolicy and check it against
system/sepolicy/microdroid's neverallow rules, using sepolicy-analyze
tool.

Bug: 218461215
Test: atest MicrodroidHostTestCases
Change-Id: I62a69053996b71d69dd2bf6b7eabc8b701095477
2022-02-09 23:35:44 +09:00
Jiyong Park
30c416a4bd Allow microdroid_manager to BLKFLSBUF on the instance disk
Microdroid_manager uses the ioctl to flush data to the block device.

Bug: 208639280
Test: atest MicrodroidTestApp
Change-Id: Icd708702618850e1f003b16bdc8a1698c45f6442
2022-02-07 15:13:22 +09:00
Andrew Scull
248e8a998f Allow the microdroid app to use diced
Bug: 214231981
Test: atest MicrodroidTestApp
Change-Id: I9672d678c7b698d15a0efa8dab567dbc2696ca81
2022-01-30 22:42:38 +00:00
Andrew Scull
6f2529c01b Touch up microdroid sepolicy after removing keystore
Avoid divergence in the files that will eventually shared with the main
Android sepolicy and fix a style mistake.

Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I40b0bebb432d73ab6ab847c117e72d8bc18fe873
2022-01-28 13:07:16 +00:00
Andrew Scull
6c288a2676 Remove hwservicemanager from microdroid sepolicy
With the keymint HAL removed from microdroid, there are no more legacy
HALs meaning no further need for hwservicemanager.

Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I111f3456399ef91e51d1cfead67659601c23db9e
2022-01-27 21:48:37 +00:00
Andrew Scull
af2c894f2c Remove keymint from microdroid sepolicy
The keymint HAL has been removed from microdroid to remove the
corresponding sepolicy.

Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I08aae50dd9a4575954db40ec974625e43bff2335
2022-01-27 21:48:37 +00:00
Andrew Scull
f75d5cde48 Remove keystore from microdroid sepolicy
The keystore service has been removed from microdroid to remove the
corresponding sepolicy.

Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I6600b47f8b8c6bba05b1f59b4d87713283805817
2022-01-27 21:48:37 +00:00
Treehugger Robot
fabaac131a Merge "Delete more unused policies by CompOS" 2022-01-25 20:54:41 +00:00
Treehugger Robot
c8ff1677ed Merge "Add context for ro.boot.microdroid.debuggable property" 2022-01-25 20:41:07 +00:00
Victor Hsieh
ea38d6925d Delete more unused policies by CompOS
Bug: 205750213
Test: TH
Change-Id: Ie08465e8801a74d61f85715e85a856293c4232d5
2022-01-25 08:40:46 -08:00
Andrew Scull
30373f3015 Add context for ro.boot.microdroid.debuggable property
This property is read by microdroid_manager to check whether the VM is
in debug mode. Give it a context to satisfy the sepolicy.

Bug: 214231981
Test: atest MicrodroidTestApp
Change-Id: I9d4bda5e487324c95229c7978e8fe0a53fa9f616
2022-01-25 16:07:21 +00:00
Andrew Scull
f451a1407f Give DICE HAL access to driver
The driver facilitates the handover of values from the bootloader so
needs to be accessible by the HAL.

Bug: 214231981
Test: run microdroid with a "google,open-dice" DT node
Change-Id: Ib5317e6a42befe22d8f1dbefeb9803f5ec92b061
2022-01-25 15:22:42 +00:00
Jiyong Park
16c1ae3a3d Add use_bionic_libs macro
... to dedupe rules for allowing access to bootstrap bionic libraries.

Bug: N/A
Test: m
Change-Id: I575487416a356c22f5f06f1713032f11d979d7d4
2022-01-25 09:47:56 +09:00
Treehugger Robot
db8d838e5a Merge "Update compos permissions" 2022-01-24 17:01:52 +00:00
Andrew Scull
f94a381585 Make the DICE HAL a bootstrap process
This HAL starts before APEXs are activated so needs access to the
bootstrap bionic libraries.

Bug: 214231981
Test: run microdroid
Change-Id: If82729eb2eff812916f257d24ce206e371be0c56
2022-01-21 18:19:21 +00:00
Jiyong Park
f252d81ec9 Allow microdroid_manager to talk to diced
microdroid_manager needs to give the measurements to diced and get
per-VM secret from it for encrypting/decrypting the instance disk.

Bug: 214231981
Test: run microdroid
Change-Id: Ia4cab3f40263619e554466433cbb065e70ae0f07
2022-01-21 18:19:03 +00:00
Alan Stokes
7409470917 Update compos permissions
We no longer use keystore, nor do we run dex2oat directly.

But we do now use IDiceNode::derive() to get our CDI_seal for key
derivation.

Bug: 214233409
Bug: 210998077
Test: atest ComposKeyTestCase
Change-Id: Id8ba882e7c250ad0365a7f493801e02cb5a0b700
2022-01-21 15:15:19 +00:00
Jiyong Park
92382fe69f Make servicemanager and diced bootstrap processes
The two are now started before APEXes are activated. Therefore they need
access to the bootstrap bionic libraries.

file_contexts is also updated because their file names are changed to
avoid the conflict with their non-bootstrap variants.

Bug: 214231981
Test: m
Change-Id: I30fb1422f228b71251d6618dd7f6e4e5422717f8
2022-01-21 13:41:26 +00:00
Jiyong Park
c9a7de49ea Revert "use dalvik.vm.boot-dex2oat-threads inside microdroid"
This reverts commit eee72d6cb3d9f5c6001192247861b28cb0787827.

REASON: not needed. See the other CL in the same topic.
Bug: 197358423
Test: m
Change-Id: Ice0813ed9e349e37c83b163e2c21f17bb1105013
2022-01-19 01:37:18 +09:00
Treehugger Robot
4da68c0fe4 Merge "use dalvik.vm.boot-dex2oat-threads inside microdroid" 2022-01-18 13:40:30 +00:00
Alan Stokes
50d2195cab Allow compos to use diced
Bug: 214233409
Test: composd_cmd dice
Change-Id: I82b4bd87db879f378d2fafb6e2db7e2544fef5de
2022-01-17 15:48:00 +00:00
Alan Stokes
f3ec0742ed Add diced security class
Add diced to security_class and access_vectors so it can check its
permissions in side Microdroid.

This was part of commit 2b6c6063ae
outside the VM.

Bug: 214231981
Test: composd_cmd dice
Change-Id: Ia503db183d16a4efcb975f654bb4483df44f51ad
2022-01-17 15:42:32 +00:00
Jiyong Park
2832f957e7 Merge "Add policies for diced and hal_dice in microdroid" 2022-01-17 13:29:34 +00:00
Jiyong Park
1d9c9ba231 use dalvik.vm.boot-dex2oat-threads inside microdroid
Previously, all dalvik.vm.* properties were not used / ignored in
Microdroid. However this change makes use of
dalvik.vm.boot-dex2oat-threads which controls the concurrency level of
dex2oat.

Specifically, on the host-side, the number of vCPUs in the compos VM is
configured from the system property having the same name. Then inside
the compos VM, compsvc which runs in the compos domain, sets the system
property to be the number of vCPUs in the VM. In other words, the system
properties get the same value both in the host and the guest VMs. Then
finally, the dex2oat process running inside the VM reads the system
property and configures its concurrency level accordingly.

Bug: 197358423
Test: run compos

Change-Id: I8d2394a7192a7b55a910f317e12e2b1f60b89636
2022-01-14 00:40:49 +09:00
Treehugger Robot
70cd2da646 Merge "Allow authfs to read extra APK mount" 2022-01-13 01:06:01 +00:00
Jiyong Park
8948c1ce4b Add policies for diced and hal_dice in microdroid
Bug: 214231981
Test: run microdroid and check diced is up and running
Change-Id: I605d7d6a790b8a14e575e67e1dcf02eaf7a5eafc
2022-01-13 01:37:00 +09:00
Alan Stokes
67a8605deb Remove obsolete ioctl allow
No longer used, so remove the allow.

Bug: 199259751
Test: Presubmits
Change-Id: Iea61d29d14b13de86f7fbd6b6e416eea745b615e
2022-01-07 10:42:17 +00:00
Victor Hsieh
a59b030341 Allow authfs to read extra APK mount
Bug: 206869687
Test: Add debug log to compos.  See correct content from the proto.
Change-Id: I4f2b4096808efc1b15c218a225b451731f37e43d
2022-01-05 15:21:51 -08:00