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
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
Make sure all the permissions are granted to let the HAL do its work
properly.
Bug: 214231981
Test: atest MicrodroidTestApp
Change-Id: I54c633b8163ea313c87856fb0513074a76ac86a1
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
Bootloader properties are available to all domains so don't need special
policy rules for microdroid_manager.
Test: atest MicrodroidTests
Change-Id: I0ccf6b28467a47c0f3cf7715b9ff34d01e8ac970
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
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
Microdroid_manager uses the ioctl to flush data to the block device.
Bug: 208639280
Test: atest MicrodroidTestApp
Change-Id: Icd708702618850e1f003b16bdc8a1698c45f6442
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
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
The keymint HAL has been removed from microdroid to remove the
corresponding sepolicy.
Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I08aae50dd9a4575954db40ec974625e43bff2335
The keystore service has been removed from microdroid to remove the
corresponding sepolicy.
Bug: 215747811
Test: atest MicrodroidTests
Change-Id: I6600b47f8b8c6bba05b1f59b4d87713283805817
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
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
This HAL starts before APEXs are activated so needs access to the
bootstrap bionic libraries.
Bug: 214231981
Test: run microdroid
Change-Id: If82729eb2eff812916f257d24ce206e371be0c56
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
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
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
This reverts commit eee72d6cb3d9f5c6001192247861b28cb0787827.
REASON: not needed. See the other CL in the same topic.
Bug: 197358423
Test: m
Change-Id: Ice0813ed9e349e37c83b163e2c21f17bb1105013
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
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
We run it in the compos domain, since it doesn't require very much
additional access.
Bug: 189164487
Test: composd_cmd test-compile
Change-Id: I9ef26dd60225505086e45185289e3e03d0a8de8e
CompOS needs to read the artifacts on authfs that odrefresh has
created and write signature files for them.
(But it no longer needs to create any directories, so removed that.)
Fixes:
avc: denied { open } for comm="compsvc"
path="/data/misc/authfs/1/11/test-artifacts/...art" dev="fuse" ino=81
scontext=u:r:compos:s0 tcontext=u:object_r:authfs_fuse:s0 tclass=file
permissive=0
avc: denied { create } for comm="compsvc" name="compos.info"
scontext=u:r:compos:s0 tcontext=u:object_r:authfs_fuse:s0 tclass=file
permissive=0
Bug: 161471326
Test: composd_cmd async_odrefresh (with microdroid selinux enforced)
Change-Id: Ie02dedf1f18926cdbbd39e4a950c5aec80adee32
This should be read-only and corresponds to apexd.payload_metadata.path
Bug: 191097666
Test: android-sh -c 'setprop apexd.payload_metadata.path'
See permission denied
atest MicrodroidHostTestCases
Change-Id: Ifcb7da1266769895974d4fef86139bad5891a4ec
If FD use is not allowed, execve(2) returns EACCESS and the process is
killed by SIGSEGV.
Minijail closes any FDs by default and open /dev/null for FD 0-2. For
now, odrefresh doesn't use any FD. But until we could tell minijail to
not create FD 0-2 (which could be arguable), allow the permission.
Bug: 210909688
Test: composd_cmd async-odrefresh # exit 80 in enforced mode
Change-Id: I8643d8bfc8da03439a04491fba5ba6de663760eb
dex2oat checks $ANDROID_ROOT exist, which is a directory in an authfs
mount. Give it permission to search along the path.
Strictly speaking, this isn't change how dex2oat execute in this
particular case, for now. Functions like LocationIsOnSystemFramework
make sure getenv(ANDROID_ROOT) exists. But either way, for those kind of
location checks, it won't match the mount path in /data/misc/authfs
anyway.
Bug: 205750213
Test: no more SELinux denials from dex2oat
Change-Id: I1b52dfdeb057443304f02784b6aa180d7db28bd8
dex2oat currently uses some properties as flags (see
art/libartbase/base/flags.cc). For CompOS, we don't really need such
properties, and actually should avoid global state. So dontaudit
explicitly.
Bug: 210030607
Test: no more default_prop denials for dex2oat
Change-Id: I10852f2a7df4dac7a9389eab3f53f91328104f96
The two properties are not just prefixes. See __android_log_level in
system/logging/liblog/properties.cpp.
Bug: 210030607
Test: no longer seeing denials with default_prop in odrefresh
Change-Id: If2c9cba7aa65802e81c79c7d3d9735cbf14a6efa
The `__builtin_available` macro is used in used in several libraries in
microdroid, including liblog. The macro internally uses
ro.build.version.{codename,sdk}[1]. This change defines the context for
these properties.
[1] https://reviews.llvm.org/rG516a01b5f36d4188778a34202cd11856d70ac808
Bug: 210030607
Test: No longer seeing denied access of default_prop from odrefresh
Change-Id: I51bc52f679a174daccc05a1e2d6c9fda9e6b12cb
