Apply sdk_sandbox_next it if a new input selector,
isSdkSandboxNext, is true. This is set to true by libselinux
if a flag is set in the seInfo passed to it.
This enables some testers to test out the set of restrictions
we're planning for the next SDK version.
sdk_sandbox_next is not the final set of restrictions of the next SDK
version.
Bug: b/270148964
Test: atest PackageManagerLocalTest SdkSandboxDataIsolationHostTest
SdkSandboxRestrictionsTest
Change-Id: Idbc3ab39a2d9ef6e1feaf8c212d81a1c79b0f787
Provide isIsolatedComputeApp selector for apps reusing _isolated user to run in domains other than isolated_app. Processes match the selector will have a default domain isolated_compute_app assigned. Also updated _isolated neverallow statements.
Bug: 265540209
Bug: 265746493
Test: m && atest --host libselinux_test with change on android_unittest.cpp
Change-Id: Ia05954aa6a9a9a07d6a8d1e3235a89e7b37dead9
The steps have been done by hand, which is highly errorprone.
Bug: 207344718
Test: run the script manually
Change-Id: I9deb367b0cbd8d357147f83964bc214cd00266f7
Adding soong module and tool to check if there is fuzzer present
for every service in private/service_contexts. Whenever a service is
added, its is recommended to update
$ANDROID_BUILD_TOP/system/sepolicy/soong/build/service_fuzzer_bindings.go
with service name and its corresponding fuzzer.
Test: m
Bug: 242104782
Change-Id: Id9bc45f50bebf464de7c91c7469d4bb6ff153ebd
This optimization improves the runtime of seamendc by ~6-7ms.
Bug: 236691128
Test: atest seamendc-test && atest SeamendcHostTest
Change-Id: Id1e86a5f51d035fac415a0e6ae05b99b3bd774d4
If we don't set `buff = NULL` after it's freed by this loop, a later
iteration over the loop where e.g., `stat` fails will call
`free(buff)` again.
Bug: 206470603
Test: TreeHugger
Change-Id: Ic19195adb7398fe2f8ab682ed451f24463872562
sepolicy_generate_compat is a binary that creates a new compat file when
freezing sepolicy API.
Suppose that we are adding {ver} compat file, after freezing {ver}
sepolicy. Then the workflow would be:
1) copy prebuilts to system/sepolicy/prebuilts/api/{ver}
2) add {ver} to PLATFORM_SEPOLICY_COMPAT_VERSIONS under
build/make/core/config.mk
3) touch the following three files
- system/sepolicy/private/compat/{ver}/{ver}.cil
- system/sepolicy/private/compat/{ver}/{ver}.compat.cil
- system/sepolicy/private/compat/{ver}/{ver}.ignore.cil
- system/sepolicy/prebuilts/api/{ver}/vendor_sepolicy.cil
- system/sepolicy/prebuilts/api/{ver}/plat_pub_versioned.cil
* This step is to build base compat files, and won't be needed in the
future.
4) add compat module files (won't be needed in the future)
- {ver}.cil
- {ver}.compat.cil
- {ver}.ignore.cil
* This step is to build base compat files, and won't be needed in the
future.
5) run the following command to update above three files:
$ source build/envsetup.sh && lunch aosp_arm64-userdebug
$ m sepolicy_generate_compat
$ sepolicy_generate_compat --branch=(branch_for_ver) \
--build latest --target-version {ver} \
--latest-version {ver-1}
6) upload build/make and system/sepolicy changes.
This script still lacks:
- handling of plat_pub_versioned.cil
- test cases
We will tackle such problems with follow-up changes.
Bug: 214336258
Test: manual
Change-Id: I21723a0832e5adadae7c22797c5aba867dc0174e
To generate compat files, we need:
- base plat sepolicy
- old plat sepolicy
- base plat pub sepolicy
- mapping file from the device
- latest compat files
Generator now triggers the build system itself to get necessary base
files, and then uses the artifacts to extract new types and removed
types.
For the next step, the new/removed types will be mapped to old types,
based on the latest compat files.
Bug: 214336258
Test: sepolicy_generate_compat --branch sc-v2-dev --target-version \
32.0 --latest-version 31.0 -vvvv --build latest
Change-Id: I1f228233c1e3638e78bc0630ae51e48667a12ef5
sepolicy_generate_compat will be used to generate compat files for ToT,
based on the mapping file from aosp_arm64-userdebug target of {ver}
source tree. For now, it only supports downloading a mapping file
system/etc/selinux/mapping/{ver}.cil from the Android build server.
Bug: 214336258
Test: sepolicy_generate_compat --branch sc-v2-dev --version 32.0
Change-Id: I48043c71a6866aa385ecd67462f7678561cc5a38
Now that we have sepolicy module in Android.bp, we can migrate contexts
tests. Also vendor_service_contexts_test will be run, as we now include
vendor_service_contexts unconditionally.
Unfortunately, vendor_service_contexts_test is now broken, due to a
malformed type hal_power_stats_vendor_service. We will temporarily
exempt the type from the test, to speed up migrating to Android.bp.
Bug: 33691272
Test: m selinux_policy and see tests running
Test: add a malformed type other than hal_power_stats_vendor_service and
run tests
Change-Id: Ic60eb38b9a7c79006f0b5ff4453768e03006604b
PEM files are ASCII-encoded, open them as text file (as opposed to
binary). Avoid relying on __del__. Introduce a prologue and epilogue
methods to emit the <policy> tag only once per output.
Test: build plat_mac_permissions.xml on bramble and compare with
previous version; identical
Test: build product_mac_permissions.xml on bramble and compare with
previous version; identical
Test: build system_ext_mac_permissions.xml on bramble and compare with
previous version; identical
Test: build vendor_mac_permissions.xml on bramble and compare with
previous version; identical
Bug: 200119288
Change-Id: Iced0acf75bff756453918a411aecb9f4ef8f825d
These have never been used in AOSP. Looking at ~10,000 Android
build images confirms that these are not used elsewhere within
the Android ecosystem.
Bug: 192532348
Test: build (failures here would be at build-time)
Change-Id: I787b14b531df31fbb9995156eb2e84719b7c90da
Extend check_seapp to check that all types specified in seapp_contexts
files have the attribute, to ensure that the neverallow rules apply to
them. As a small bonus, also verify that domain and type values are
actually types not attributes.
Test: Presubmits
Test: Manual: specify an invalid type, build breaks.
Bug: 171795911
Change-Id: I951d6f993445e8ba11c30a504b8de281fdd93c4a
This gives us an easy way for the policy to refer to all existing or
future types used for app private data files in type= assignments in
seapp_contexts.
Apply the label to all the existing types, then refactor rules to use
the new attribute.
This is intended as a pure refactoring, except that:
- Some neverallow rules are extended to cover types they previous
omitted;
- We allow iorap_inode2filename limited access to shell_data_file and
nfc_data_file;
- We allow zygote limited access to system_app_data_file.
Also extend check_seapp to check that all types specified in
seapp_contexts files have the attribute, to ensure that the neverallow
rules apply to them. As a small bonus, also verify that domain and
type values are actually types not attributes.
Test: Presubmits
Test: Manual: specify an invalid type, build breaks.
Bug: 171795911
Change-Id: Iab6018af449dab3b407824e635dc62e3d81e07c9
The LOCAL_COMPATIBILITY_SUITES variable has been removed, as the users
are now embedding this binary the same way they do the rest of the
sepolicy tools.
Bug: 122331947
Bug: 130696912
Test: treehugger
Change-Id: Ia83025b18da87204d87684f2c0af025d9cecc824
Test: Pass a not cil file to version_policy and see no crash appeared.
example: out/host/linux-x86/bin/version_policy -b `which ls` -m -n 10000.0 -o target
Change-Id: If2b950a02dd94a4813b74377617f90c7a75a9f27
Signed-off-by: liwugang <liwugang@xiaomi.com>
fc_sort uses its own implementation of merge sort, but it's
unnecessarily complex and sorting criteria isn't clear: it only
compares lengths and existences of fields. So it can give different
results on the same input (same set of entries, different order).
This fixes it so that output is always deterministic, regardless of
the order of lines in input files.
Bug: N/A
Test: try to run fc_sort several times on same input with different
line orders, and see the results.
Change-Id: I982a35a4ae9e115030a8598027bbf1181ee77a7d
This CL fixes leaks of the policy that we're building up. The analyzer
only caught the leaks on the error path, but I assume that
`check_assertions` does nothing to free the object that it's handed.
Analyzer warnings:
system/sepolicy/tools/sepolicy-analyze/neverallow.c:439:9: warning:
Potential leak of memory pointed to by 'avrule'
[clang-analyzer-unix.Malloc]
system/sepolicy/tools/sepolicy-analyze/neverallow.c:439:9: warning:
Potential leak of memory pointed to by 'neverallows'
[clang-analyzer-unix.Malloc]
Bug: None
Test: Treehugger; reran the analyzer
Change-Id: I79a0c34e8b53d33a1f01497337590eab660ad3ec
Init needs to be aware of the policy version defined in sepolicy
for on-device compilation.
Bug: 124499219
Test: build and boot a device. Try both precompiled and on-device
compiled policy.
Change-Id: Iba861aeb4566405aedcbe3c2bad48e1e50126370
Running this script sometimes completely hangs all of our computers.
This change seems to work better for me.
Test: Use script to compile many Androids.
Change-Id: I95539034b35a4ff6dbc39cd67856b0bd7e20d587
OOB write if the size of the key value pairs exceeds the max.
Test: Add a long line to the seapp_contexts file
Change-Id: Iaa3e697e7ac134eb6829b8b36b090997ca344b3a
Signed-off-by: liwugang <liwugang@xiaomi.com>
It will not end when other words appeared because of the wrong bound and variable,
rule_map->length will exceed the actual length in the rule_map_new function,
it will lead to crash in the rule_map_validate function because of strcmp(NULL, str).
Test: 1.add "user=shell doman=system_app" to private/seapp_contexts
2.exec "checkseapp private/seapp_contexts" and it will not be crashed
Change-Id: I600206448b38cf2c9b61f9141b40f920b05696c8
Signed-off-by: liwugang <liwugang@xiaomi.com>
Calling execve() on files in an app's home directory isn't allowed
for targetApi >=29. But this is needed by simpleperf to profile
a debuggable app via run-as.
So workaround it by adding runas_app domain, which allows running
app data file. And add a rule in seapp_contexts to use runas_app
domain for setcontext requests from run-as.
Bug: 118737210
Test: boot marlin and run CtsSimpleperfTestCases.
Change-Id: I5c3b54c95337d6d8192861757b858708174ebfd5
Avoid generating build time noise so that real errors stand out.
https://en.wikipedia.org/wiki/Unix_philosophy
Rule of Silence
Developers should design programs so that they do not print
unnecessary output. This rule aims to allow other programs
and developers to pick out the information they need from a
program's output without having to parse verbosity.
Test: Info messages no longer show up at build time.
Bug: 115998215
Change-Id: I33c18e2c7d77ed1bb4132debe13de2ae0907c34c
This scripts checks for common problems with SELinux policy,
including:
- Declared types that are not assigned to any files
- Files that don't exist on a running device
- Rules defined in the wrong file
- Using the wrong version of _file_perms/_dir_perms
These are heuristics, mainly because it does not fully parse regular
expressions and because policy might still be needed even if the
relevant file does not exist on a single device. But it hopefully is
a start at helping cleanup policy.
Bug: 30003114
Bug: 70702017
Test: Run script on core and device-specific policy.
Test: Verify that most of its results are correct.
Change-Id: I1ded4e9b18816841198dcbf72da65f046441d626
