Commit graph

47 commits

Author SHA1 Message Date
Martin Stjernholm
b46b947597 Remove dalvik.vm.usejitprofiles system property.
Disabling profiles is no longer supported. Most of the profile support
has been active even when this property was false, and it won't be
supported in the ART Service.

Test: atest -a propertyinfoserializer_tests
Bug: 254434433
Change-Id: I49272b0976f71fcd2e18d04a5b6cc3548a5f9d3f
2022-11-25 12:27:37 +00:00
Florian Mayer
eafc35bd4f Promote HWASan tests to presubmit.
They have been passing and do not show significant slowdown.

Change-Id: I2e072d3e8f772ddcc43d497fd306bed8387403db
2022-05-06 19:08:21 +00:00
Florian Mayer
d25baf462d Add property_service to hwasan-postsubmit
Test: Run tests under HWASan.
Bug: 193568145
Change-Id: I0d7ac4acc8d5171d40bdd4dc4e03fc32f4348edb
2022-03-18 21:47:10 +00:00
Maciej Żenczykowski
4321017c32 remove 'net.qtaguid_enabled' property
Bug: 161325508
Test: atest, TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I71248c600e520a3fb2bc40e59f7bf8daae6ad4ed
2021-11-10 15:52:38 -08:00
Colin Cross
207ea516d6 libpropertyinfoparser: only use system_shared_libs for bionic variant
libpropertyinfoparser is a dependency of libc, and so cannot use the
default system_shared_libs that includes libc.  It's not a dependency
of musl's libc though, and it needs to use musl's libc headers,
not the bionic libc headers provided by the libc_headers module.  Move
system_shared_libs and libc_headers into a target.bionic clause.

Bug: 190084016
Test: m USE_HOST_MUSL=true
Change-Id: Ie1f908c02fc69ae7d46b10e2fdb5dafbc3ad8557
2021-09-07 15:14:35 -07:00
Elliott Hughes
22e082e87a Split up the system/core/ TEST_MAPPING.
A lot of things had moved out of system/core/ without their TEST_MAPPING
entries having gone with them, reducing the amount of presubmit coverage
for those things.

In order to reduce the likelihood of that happening again, I've pushed
all that remained in the system/core/ TEST_MAPPING down into the
individual subdirectories.

Test: treehugger
Change-Id: Ib75d65f9200fa64ae1552471da6fbe5b7023cf94
2021-08-16 16:37:10 -07:00
Bob Badour
d69ad69a93 [LSC] Add LOCAL_LICENSE_KINDS to system/core
Added SPDX-license-identifier-Apache-2.0 to:
  bootstat/Android.bp
  cli-test/Android.bp
  code_coverage/Android.bp
  cpio/Android.bp
  debuggerd/crasher/Android.bp
  debuggerd/proto/Android.bp
  diagnose_usb/Android.bp
  fs_mgr/libdm/Android.bp
  fs_mgr/libfiemap/Android.bp
  fs_mgr/liblp/Android.bp
  fs_mgr/libsnapshot/Android.bp
  fs_mgr/libstorage_literals/Android.bp
  fs_mgr/libvbmeta/Android.bp
  fs_mgr/tests/Android.bp
  fs_mgr/tools/Android.bp
  gatekeeperd/Android.bp
  healthd/Android.bp
  healthd/testdata/Android.bp
  init/Android.bp
  init/Android.mk
  init/sysprop/Android.bp
  init/test_kill_services/Android.bp
  init/test_service/Android.bp
  libappfuse/Android.bp
  libasyncio/Android.bp
  libbinderwrapper/Android.bp
  libcrypto_utils/Android.bp
  libcrypto_utils/tests/Android.bp
  libdiskconfig/Android.bp
  libgrallocusage/Android.bp
  libkeyutils/mini_keyctl/Android.bp
  libmodprobe/Android.bp
  libnetutils/Android.bp
  libpackagelistparser/Android.bp
  libprocessgroup/Android.bp
  libprocessgroup/cgrouprc/Android.bp
  libprocessgroup/cgrouprc_format/Android.bp
  libprocessgroup/profiles/Android.bp
  libprocessgroup/setup/Android.bp
  libqtaguid/Android.bp
  libsparse/Android.bp
  libstats/push_compat/Android.bp
  libsuspend/Android.bp
  libsync/Android.bp
  libsystem/Android.bp
  libsysutils/Android.bp
  libusbhost/Android.bp
  libutils/Android.bp
  libvndksupport/Android.bp
  libvndksupport/tests/Android.bp
  llkd/Android.bp
  llkd/tests/Android.bp
  property_service/libpropertyinfoparser/Android.bp
  property_service/libpropertyinfoserializer/Android.bp
  property_service/property_info_checker/Android.bp
  qemu_pipe/Android.bp
  reboot/Android.bp
  rootdir/Android.bp
  rootdir/Android.mk
  rootdir/avb/Android.bp
  rootdir/avb/Android.mk
  run-as/Android.bp
  sdcard/Android.bp
  set-verity-state/Android.bp
  shell_and_utilities/Android.bp
  storaged/Android.bp
  toolbox/Android.bp
  trusty/apploader/Android.bp
  trusty/confirmationui/Android.bp
  trusty/confirmationui/fuzz/Android.bp
  trusty/coverage/Android.bp
  trusty/fuzz/Android.bp
  trusty/fuzz/test/Android.bp
  trusty/gatekeeper/Android.bp
  trusty/gatekeeper/fuzz/Android.bp
  trusty/keymaster/Android.bp
  trusty/keymaster/fuzz/Android.bp
  trusty/libtrusty/Android.bp
  trusty/libtrusty/tipc-test/Android.bp
  trusty/secure_dpu/Android.bp
  trusty/storage/interface/Android.bp
  trusty/storage/lib/Android.bp
  trusty/storage/proxy/Android.bp
  trusty/storage/tests/Android.bp
  trusty/utils/spiproxyd/Android.bp
  trusty/utils/trusty-ut-ctrl/Android.bp
  usbd/Android.bp
  watchdogd/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-BSD to:
  debuggerd/Android.bp
  fastboot/Android.bp
  libkeyutils/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-BSD
    SPDX-license-identifier-MIT
to:
  libcutils/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-MIT
to:
  fs_mgr/Android.bp
  fs_mgr/libfs_avb/Android.bp
  trusty/Android.bp
  trusty/utils/rpmb_dev/Android.bp

Added SPDX-license-identifier-BSD
to:
  fastboot/fuzzy_fastboot/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: Id740a7d2884556081fdb68876584b25eb95e1bef
2021-02-19 12:59:05 -08:00
Elliott Hughes
c3a206ccda Revert "[LSC] Add LOCAL_LICENSE_KINDS to system/core"
This reverts commit 187b7d1950.

Reason for revert: system/core is multiple projects, not one.

Change-Id: I790ea41741f8cd9b8b6db2f59a49e71fb0958fd6
2021-02-16 20:01:20 +00:00
Bob Badour
187b7d1950 [LSC] Add LOCAL_LICENSE_KINDS to system/core
Added SPDX-license-identifier-Apache-2.0 to:
  bootstat/Android.bp
  cli-test/Android.bp
  code_coverage/Android.bp
  cpio/Android.bp
  debuggerd/crasher/Android.bp
  debuggerd/proto/Android.bp
  diagnose_usb/Android.bp
  fs_mgr/libdm/Android.bp
  fs_mgr/libfiemap/Android.bp
  fs_mgr/liblp/Android.bp
  fs_mgr/libsnapshot/Android.bp
  fs_mgr/libstorage_literals/Android.bp
  fs_mgr/libvbmeta/Android.bp
  fs_mgr/tests/Android.bp
  fs_mgr/tools/Android.bp
  gatekeeperd/Android.bp
  healthd/Android.bp
  healthd/testdata/Android.bp
  init/Android.bp
  init/Android.mk
  init/sysprop/Android.bp
  init/test_kill_services/Android.bp
  init/test_service/Android.bp
  libappfuse/Android.bp
  libasyncio/Android.bp
  libbinderwrapper/Android.bp
  libcrypto_utils/Android.bp
  libcrypto_utils/tests/Android.bp
  libdiskconfig/Android.bp
  libgrallocusage/Android.bp
  libkeyutils/mini_keyctl/Android.bp
  libmodprobe/Android.bp
  libnetutils/Android.bp
  libpackagelistparser/Android.bp
  libprocessgroup/Android.bp
  libprocessgroup/cgrouprc/Android.bp
  libprocessgroup/cgrouprc_format/Android.bp
  libprocessgroup/profiles/Android.bp
  libprocessgroup/setup/Android.bp
  libqtaguid/Android.bp
  libsparse/Android.bp
  libstats/push_compat/Android.bp
  libsuspend/Android.bp
  libsync/Android.bp
  libsystem/Android.bp
  libsysutils/Android.bp
  libusbhost/Android.bp
  libutils/Android.bp
  libvndksupport/Android.bp
  libvndksupport/tests/Android.bp
  llkd/Android.bp
  llkd/tests/Android.bp
  property_service/libpropertyinfoparser/Android.bp
  property_service/libpropertyinfoserializer/Android.bp
  property_service/property_info_checker/Android.bp
  qemu_pipe/Android.bp
  reboot/Android.bp
  rootdir/Android.bp
  rootdir/Android.mk
  rootdir/avb/Android.bp
  rootdir/avb/Android.mk
  run-as/Android.bp
  sdcard/Android.bp
  set-verity-state/Android.bp
  shell_and_utilities/Android.bp
  storaged/Android.bp
  toolbox/Android.bp
  trusty/apploader/Android.bp
  trusty/confirmationui/Android.bp
  trusty/confirmationui/fuzz/Android.bp
  trusty/coverage/Android.bp
  trusty/fuzz/Android.bp
  trusty/fuzz/test/Android.bp
  trusty/gatekeeper/Android.bp
  trusty/gatekeeper/fuzz/Android.bp
  trusty/keymaster/Android.bp
  trusty/keymaster/fuzz/Android.bp
  trusty/libtrusty/Android.bp
  trusty/libtrusty/tipc-test/Android.bp
  trusty/secure_dpu/Android.bp
  trusty/storage/interface/Android.bp
  trusty/storage/lib/Android.bp
  trusty/storage/proxy/Android.bp
  trusty/storage/tests/Android.bp
  trusty/utils/spiproxyd/Android.bp
  trusty/utils/trusty-ut-ctrl/Android.bp
  usbd/Android.bp
  watchdogd/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-BSD to:
  debuggerd/Android.bp
  fastboot/Android.bp
  libkeyutils/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-BSD
    SPDX-license-identifier-MIT
to:
  Android.bp
  libcutils/Android.bp

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-MIT
to:
  fs_mgr/Android.bp
  fs_mgr/libfs_avb/Android.bp
  trusty/utils/rpmb_dev/Android.bp

Added SPDX-license-identifier-BSD
to:
  fastboot/fuzzy_fastboot/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I5bd81adb5cdcf2b4dd4141b204eb430ff526af8f
2021-02-16 04:10:03 -08:00
Elliott Hughes
9bfd986422 Remove all the cpp_std: "experimental"s.
None of them are necessary, and it's more intention-revealing to say
`c++2a` or whatever anyway.

Test: treehugger
Change-Id: Ie1df26499d160d6fc757d17fcb0121997bda14f9
2021-02-04 09:05:01 -08:00
Elliott Hughes
21de4e727e Add new owners to various sub-projects.
Test: treehugger
Change-Id: Ia2a99c0499633ccc5d23c37a1ec93867c876d637
2020-12-11 12:45:45 -08:00
Yifan Hong
f3b2b96925 libpropertyinfoparser: make vendor_ramdisk_available.
Test: pass
Bug: 156098440
Change-Id: I9c9e74c431ac0f8c382bea0ecd290968aa3f4448
2020-10-28 10:57:51 -07:00
Tom Cherry
2d451663be Cleanup for #inclusivefixit.
Test: build
Change-Id: If11a32c130367560394eccf442de95d941918073
2020-07-27 11:37:19 -07:00
Rubin Xu
7a5cbfc645 Rename ro.device_owner system property
This is renamed to ro.organization_owned to cover the extended
usage now that there is a new management mode for fully-managed
organization owned devices: organization-owned managed profile.
A device is considered fully-managed if there is a device owner
or an organization-owned managed profile.

Test: atest liblog-unit-tests
Test: atest propertyinfoserializer_tests
Bug: 148437300
Change-Id: Iaa8ea246c973732526abc1da5b307af8bce1a0af
2020-02-19 10:34:36 +00:00
Yifan Hong
7dd4553991 Make ramdisk_available.
Test: pass
Bug: 147347110
Change-Id: I9787e386e552393efc5beed5aac577be9ce1a3c5
2020-01-22 16:47:14 -08:00
Tom Cherry
f633b62b63 Merge "Require liblog for libbase in all configurations" 2020-01-15 23:20:07 +00:00
Steven Moreland
e40e4270e8 remove deprecated bp 'subdirs'
noticed some, so thought I would remove them everywhere here

Bug: N/A
Test: N/A
Change-Id: I2978673b158d6c253914ea22f7f0129e446a5f91
2020-01-14 12:18:40 -08:00
Tom Cherry
992163021d Require liblog for libbase in all configurations
liblog will soon be required for all of libbase's logging.  This
change proactively requires liblog in all configurations instead of
just Android.

Bug: 119867234
Test: build
Change-Id: I696162fbebc78d4ef23c6032412101ac51d397a4
2020-01-09 10:43:26 -08:00
Tom Cherry
4b077c51f2 Require 'exact', 'prefix', or '' for match operation in property_contexts
The previous code would lazily check for 'exact' and accept any other
value as a prefix match.  This should be a tighter check allowing only
'exact', 'prefix', or an empty string for this option.

Test: build fails if an invalid string is used for the match operation
Test: build succeeds normally
Test: `getprop -Z` shows exact vs prefix is differentiated correctly
Change-Id: I21dcb193810d65f468f8960967eabfd261f71e21
2019-12-11 07:56:51 -08:00
Orion Hodson
8e77b789f8 Add cpu-set properties to serializer test
Bug: 141446571
Test: atest propertyinfoserializer_tests
Change-Id: I1232fec5f1d0be7e5fb6aa5c46f6c2c5529bfc6c
2019-11-15 14:21:58 +00:00
Inseob Kim
fa2ba387b9 Remove vendor_availble of propertyinfoserializer
Bug: N/A
Test: m
Change-Id: I68a2bb323ac7cdc0abf3047e96ee02df010ff3c1
2019-09-23 16:13:45 +09:00
Inseob Kim
c8f80ffe0d Remove static vndk dep from vendor modules
Shared VNDK should be used instead for vendor modules.

Bug: 137178339
Test: m
Test: run property_info_checker on host
Change-Id: I40672d0f6251148915f9ae2e2a14f291d9c2b6c5
2019-09-20 15:31:39 +09:00
Mark Salyzyn
10377df9f8 init: ro.boottime.init.first_stage
Add a property ro.boottime.init.first_stage to provide us a
first stage init duration from start to exec completed in
nanoseconds.

For consistency, report nanoseconds duration for
ro.boottime.init.selinux as well instead of milliseconds.
Now also report consistently from start to exec completed
instead of just the selinux load time.

SideEffects: ro.boottime.init.selinux is reported to TRON and
             may alarm with the millionfold increase in precision.
             ro.boottime.init is now also consistent with ns
             precision.

Test: inspect
Bug: 124491153
Bug: 129780532
Change-Id: Iff4f1a3a1ab7ff0a309c278724c92da0832b9a69
2019-05-08 16:07:10 +00:00
dimitry
a808b1150a Enable native_bridge_support
Enable native bridge support for libbase, liblog,
libziparchive and libpropertyinfoparser.

This makes it possible to use them in binaries for translated
architectures.

Bug: http://b/77159578
Test: make
Change-Id: If67ce92288b17a052ea1e79a268e284f7d941439
2019-05-06 14:05:05 +02:00
Logan Chien
d5f10b36cf Add libc_headers to header_libs for libpropertyinfoparser
This commit adds `libc_headers` to `header_libs` for
`libpropertyinfoparser`.  Before this commit, `libpropertyinfoparser`
relies on `libc` that are silently added to `system_shared_libs`.  This
will no longer work if the build system always respects the
`system_shared_libs` that are specified in `Android.bp`.  Thus, we
should depend on `libc_headers` instead.

Bug: 123006819
Test: make checkbuild
Change-Id: I2d416c6db7f42f12ad20d98f4048753254f5e0b6
2019-01-17 21:18:01 +08:00
Dan Willemsen
d3825898da Prevent dependency cycle due to system_shared_libs expansion
It was discovered that we were building some objects inconsistently due
to an optimization in cc_library to only build objects once and use them
for both the static and shared libraries. But static libraries didn't
get system_shared_libs set automatically, and we didn't notice that we
would have built the objects differently.

So static libraries now get the default system_shared_libs, we allow
adjusting that for static vs shared in a cc_library, and we disable the
optimization if the linked libraries are configured differently between
static and shared in a single cc_library.

This triggers dependency cycles for static libraries that libc/libdl
use, so fix those cycles here.

Test: treehugger
Change-Id: I6ec2ea45292b602d5c506560de8b8d6ae725be6f
2018-12-03 15:50:00 -08:00
Tom Cherry
1151d15be5 Add recovery_available: true to init dependencies
Init needs this in order to be built in Android.bp

Test: build
Change-Id: I695438d69cc71b739b7648c4008ff3760da58ef0
2018-07-24 13:45:50 -07:00
Jiyong Park
612210c75b Mark as recovery_available: true
Libraries that are direct or indirect dependencies of modules installed
to recovery partition (e.g. toybox) are marked as recovery_available:
true. This allows a recovery variant of the lib is created when it is
depended by other recovery or recovery_available modules.

Bug: 67916654
Bug: 64960723
Test: m -j
Change-Id: Ie59155c08890e96ce1893fa3687afcf763d7aea3
2018-05-15 09:47:04 +09:00
Elliott Hughes
40fdf3f4ab Add test_suites lines.
Bug: N/A
Test: builds
Change-Id: Ic5e2b9206bcfcb53c774989013b5db6aab462e42
2018-04-27 16:12:06 -07:00
Tom Cherry
882faa6448 Verify the SELabels used in property_contexts
Verify that the SELabels used in property_contexts correspond to a
real type in the SEPolicy and that this type has the property_type attribute.

Bug: 74078792
Test: Build property_contexts on bullhead successfully
Test: See failure when using a faulty SELabel in property_contexts
Change-Id: If1618c2c3dae4c0cd3efa5f88056478a6db6bd0b
2018-03-26 09:22:55 -07:00
Tom Cherry
927c5d5fdc Introduce property types
Properties right now can take any format, but that makes it hard to
specify an API for these properties as Treble intends to do.
Therefore this change introduces the idea of property types, described below.

1) 'string' this is the default type and allows any property to be set.
2) 'bool' this allows only boolean values (true|false|1|0)
3) 'int' and 'uint' these allow signed and unsigned integer values
respectively.
4) 'double' this allows floating point numbers with double precision.
5) 'size' this allows for strings matching [0-9]+[gkm].
6) 'enum' this allows only a specific set of space deliminated values
to be set, e.g. 'enum allow these strings' only allows one of 'allow',
'these', or 'strings' to be set.

Bug: 70858511
Test: unit tests, test that properties are only set if their type matches
Change-Id: I7a6b00fb43ec630d1f56c9e9a1f1b61d3914f603
2018-01-16 14:44:40 -08:00
Tom Cherry
4094e5ee2e Rename property 'schema' to 'type'
Bug: 70858511
Test: boot
Change-Id: I8e17596ddd8393f245c7e02ff72765c84d3bb208
2018-01-11 16:26:50 -08:00
Tom Cherry
91094e06ce Reland: Add getprop to toolbox
Add a non-toybox version of getprop, so that we can interface with the
new C++ PropertyInfoAreaFile class to return property context
information.

Bug: 36001741
Test: Compared toolbox getprop results with toybox getprop
Change-Id: I4e90aa5b843cb5cfcbe85f05f23ae8e22729b26e
2018-01-10 11:26:24 -08:00
Tom Cherry
106a0d3266 Properties: remove sanitizers
These are broken on OS X and host linux with the latest clang, so time
to disable this across the board before we hit even more unexpected
breakages.

Test: Boot bullhead
Change-Id: I405f5d96675d20f325853ee29049d80eb009bbd8
2018-01-09 21:45:47 +00:00
Tom Cherry
e69ba761a3 Revert "Add getprop to toolbox"
This reverts commit c73497e17a.

Change-Id: Id6b84c86781a6ad7b675c10f142c3daa4117ec46
2018-01-09 15:53:00 +01:00
Tom Cherry
acaeeeed73 Merge "Add getprop to toolbox" 2018-01-08 22:32:16 +00:00
Tom Cherry
c73497e17a Add getprop to toolbox
Add a non-toybox version of getprop, so that we can interface with the
new C++ PropertyInfoAreaFile class to return property context
information.

Bug: 36001741
Test: Compared toolbox getprop results with toybox getprop
Change-Id: I5f98f9e895d0620a2d9686bc0608490e7d9c3120
2018-01-08 12:36:44 -08:00
Tom Cherry
99a415038b Make property_info_checker a static executable for CTS
property_info_checker is packaged with CTS, therefore it should be a
static exectuable to not require shared libraries.

Bug: 36001741
Test: CTS SELinuxHostTest#testValidPropertyContexts
Change-Id: Ib139094f8217e3d829677ab92b8450287a65d3f7
2018-01-05 13:56:27 -08:00
Andreas Gampe
e4c9acb767 PropertyService: Exclude sanitization for darwin
This doesn't seem to work. All other projects restrict sanitization,
too.

Mac build not actually tested.

Test: m
Test: linux host build still contains ubsan symbols
Change-Id: I60532a46177632320ba3b15b4a7c2d5e31ef2bfc
2018-01-04 19:25:52 -08:00
Tom Cherry
919458c350 Create a host side checker for property info file correctness
Bug: 36001741
Test: verify a valid property info file and fail due to various failures
Change-Id: Iadd38796aa619f87ec559fe5687bbe2009df8b2d
2018-01-04 22:00:11 +00:00
Tom Cherry
b6917a3c99 Add OWNERS file
Change-Id: I13315585ecc74978689d0e033ce93a94b1560d1d
Exempted-From-Owner-Approval: Vacation
2018-01-04 13:54:45 -08:00
Tom Cherry
f5ed661f72 Only apply match if there is something to apply
It is possible for a match to only contain a context and not a schema,
or vice versa and in this case, the previously matched values should
continue to be used.  The serializer already handles this case by
setting the index of the match to ~0u if there is not one, so this
change simply has the parser skip these values.

Bug: 70858511
Test: unit tests, including new ones
Change-Id: Ibc65bd8d637e39f3b1ce7bcc2b88189b75173f88
2017-12-19 16:47:21 -08:00
Treehugger Robot
5b6c9f5fb2 Merge "Include what we use." 2017-12-14 23:52:55 +00:00
Tom Cherry
26eba2879d Always check prefix matches array at each node
Currently, we only check if the name of a given node in the trie is a
prefix match and the prefix matches array of the final node.  This is
incorrect however, as the prefix matches array of intermediate nodes
may contain the prefix for a given property.  This change adds that
check and test cases for this case.

Bug: 36001741
Test: new unit tests
Change-Id: I9f58ebc559f2ac591aa44df9e71205704bf18f66
2017-12-13 16:58:33 -08:00
Dan Albert
629c292dbb Include what we use.
Test: mma
Bug: None
Change-Id: Id8742db719906847bf40506ae8a79cea8bc092dc
Exempt-From-Owner-Approval: trivial cleanup
2017-12-13 13:41:14 -08:00
Tom Cherry
8cc596208c Add an extra set of test cases for libpropertyinfoparser
Test to ensure that exact matches and prefix matches at the root level
work.

Test: these test cases
Change-Id: Idb296329c4c4f1bb1ba336b5cb12d5761239fbf8
2017-12-12 17:33:55 -08:00
Tom Cherry
d853f77ed3 Parse property contexts via a serialized trie
Currently, whenever a new program starts, libc initializes two data
structures related to properties from the raw property_context files.
There are two problems here,
1) This takes roughly 1.2ms on a trivial program to generate contents
   that could otherwise be cached.
2) One of the data structures is a descending list of prefixes, each
   of which needs to be checked, whereas a trie would be more
   efficient.

This change introduces two libraries,
1) libpropertycontextserializer meant to be used by property_service
   to create a serialized trie containing all of the property
   contexts.
2) libpropertycontextparser meant to be used by libc's property
   functions to parse this serialized trie during property lookup.

This new trie also contains the ability to have exact matches instead
of prefix matches for properties, which was not possible before.

Bug: 36001741
Change-Id: I42324f04c4d995a0e055e9685d79f40393dfca51
2017-12-11 16:11:42 -08:00