Commit graph

16 commits

Author SHA1 Message Date
Bart Van Assche
fb3e64ab42 service_test: Only run the ServiceStopTest as root
Despite 'require_root: true' in Android.bp for CtsInitTestCases, it can
happen that this test is run without root privileges. If that happens,
skip the ServiceStopTest.

Bug: 313551148
Change-Id: I45f29369915a1f61e08ffd9bf5601a83a147597c
Signed-off-by: Bart Van Assche <bvanassche@google.com>
2023-11-30 10:00:43 -08:00
Bart Van Assche
86a2ae28e6 service_test: Test stopping services after migration to another cgroup
The root cause of "After OTA, device is not responding" is that
Service::Stop() did not stop services that had been migrated to another
v2 cgroup. Add a unit test for that scenario.

Bug: 308900853
Change-Id: I590fde90e31326290c2c8ce8fce51e94b215a979
Signed-off-by: Bart Van Assche <bvanassche@google.com>
2023-11-27 14:27:02 -08:00
Deyao Ren
df40ed1be1 Add apex name to service
Passed apex file name to service. The file name will be parsed
to determine 1) whether the service is from an apex; 2) apex name

Bug: 236090201

Change-Id: I2c292c0c067f4bf44bb25b1f80e4f972b94f7258
2022-07-22 04:00:30 +00:00
Bernie Innocenti
cecebbbacc Convert system/core to Result::ok()
No functionality changes, this is a mechanical cleanup.

Test: m
Test: cd system/core && atest
Change-Id: Ifdaa3ce1947ed578f656d5a446978726eb416c36
2020-02-06 17:04:27 +00:00
Suren Baghdasaryan
c29c2baa69 init: Add support for native service registration with lmkd
init should be able to register native services with lmkd so that they
can be killed when needed. Only processes with oom_score_adjust not
equal to the default -1000 will be registered with lmkd because with the
score that low the process is unkillable anyway.
Inform lmkd when a registered process is killed so that the record can be
removed.
Change init.rc to start lmkd during init phase so that it is there to
register other services.
Replace hardcoded oom_score_adj values with appropriate definitions.

Bug: 129011369
Test: boot and verify native service registration
Change-Id: Ie5ed62203395120d86dc1c8250fae01aa0b3c511
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
2019-11-07 18:19:31 +00:00
Tom Cherry
4772f1da47 init: check the arguments of builtins during the build
Host init verifier already checks that the names and number of
arguments for builtins are correct, but it can check more.  This
change ensures that property expansions are well formed, and that
arguments that can be parsed on the host are correct.  For example it
checks that UIDs and GIDs exist, that numerical values can be parsed,
and that rlimit strings are correct.

Test: build

Change-Id: Ied8882498a88a9f8324db6b8d1020aeeccc8177b
2019-08-01 10:54:47 -07:00
Tom Cherry
247ffbf314 Fix a few clang-tidy issues and add NOLINT for others
android-base:
* Add NOLINT for expanding namespace std for std::string* ostream
  overload

libdm:
* Fix missing parentesis around macro parameters

init:
* Fix missing CLOEXEC usage and add NOLINT for the intended
  usages.
* Fix missing parentesis around macro parameters
* Fix erase() / remove_if() idiom
* Correctly specific unsigned char when intended
* 'namespace flags' should be signed, since 'flags' it signed for
  clone()
* Add clear to property restore vector<string> to empty after move
* Explicit comparison against 0 for strcmp

Test: build
Change-Id: I8c31dafda2c43ebc5aa50124cbbd6e23ed2c4101
2019-07-09 16:17:36 +00:00
Tom Cherry
1cd082d421 init: allow services to have no capabilities set
In particular, this allows services running as the root user to have
capabilities removed instead of always having full capabilities.

Test: boot device with a root service with an empty capabilities
      option in init showing no capabilities in /proc/<pid>/status
Change-Id: I569a5573ed4bc5fab0eb37ce9224ab708e980451
2019-02-06 11:25:18 -08:00
Mark Salyzyn
1385725e09 init: switch out keychord id with std::vector match of chords
Drop all references to keychord_id and id and instead use keycodes_
as the id.  The keycodes are a std::vector<int> with an unique
sorted-order emplacement method added in the parser.  Solves the
academic issue with duplicate keychords and trigger all services
that match rather than first match only.

Test: init_tests
Bug: 64114943
Change-Id: I5582779d81458fda393004c551c0d3c03d9471e0
2018-05-29 15:18:38 -07:00
Tom Cherry
cb0f9bbc85 init: run vendor commands in a separate SELinux context
One of the major aspects of treble is the compartmentalization of system
and vendor components, however init leaves a huge gap here, as vendor
init scripts run in the same context as system init scripts and thus can
access and modify the same properties, files, etc as the system can.

This change is meant to close that gap.  It forks a separate 'subcontext'
init that runs in a different SELinux context with permissions that match
what vendors should have access to.  Commands get sent over a socket to
this 'subcontext' init that then runs them in this SELinux context and
returns the result.

Note that not all commands run in the subcontext; some commands such as
those dealing with services only make sense in the context of the main
init process.

Bug: 62875318
Test: init unit tests, boot bullhead, boot sailfish

Change-Id: Idf4a4ebf98842d27b8627f901f961ab9eb412aee
2017-09-29 13:06:26 -07:00
Tom Cherry
11a3aeeae3 init: introduce Result<T> for return values and error handling
init tries to propagate error information up to build context before
logging errors.  This is a good thing, however too often init has the
overly verbose paradigm for error handling, below:

bool CalculateResult(const T& input, U* output, std::string* err)

bool CalculateAndUseResult(const T& input, std::string* err) {
  U output;
  std::string calculate_result_err;
  if (!CalculateResult(input, &output, &calculate_result_err)) {
    *err = "CalculateResult " + input + " failed: " +
      calculate_result_err;
      return false;
  }
  UseResult(output);
  return true;
}

Even more common are functions that return only true/false but also
require passing a std::string* err in order to see the error message.

This change introduces a Result<T> that is use to either hold a
successful return value of type T or to hold an error message as a
std::string.  If the functional only returns success or a failure with
an error message, Result<Success> may be used.  The classes Error and
ErrnoError are used to indicate a failed Result<T>.

A successful Result<T> is constructed implicitly from any type that
can be implicitly converted to T or from the constructor arguments for
T.  This allows you to return a type T directly from a function that
returns Result<T>.

Error and ErrnoError are used to construct a Result<T> has
failed. Each of these classes take an ostream as an input and are
implicitly cast to a Result<T> containing that failure.  ErrnoError()
additionally appends ": " + strerror(errno) to the end of  the failure
string to aid in interacting with C APIs.

The end result is that the above code snippet is turned into the much
clearer example below:

Result<U> CalculateResult(const T& input);

Result<Success> CalculateAndUseResult(const T& input) {
  auto output = CalculateResult(input);
  if (!output) {
    return Error() << "CalculateResult " << input << " failed: "
                   << output.error();
  }
  UseResult(*output);
  return Success();
}

This change also makes this conversion for some of the util.cpp
functions that used the old paradigm.

Test: boot bullhead, init unit tests
Merged-In: I1e7d3a8820a79362245041251057fbeed2f7979b
Change-Id: I1e7d3a8820a79362245041251057fbeed2f7979b
2017-08-14 14:07:30 -07:00
Tom Cherry
3b81f2d623 init: move exec operations out of ServiceManager
These can be implemented without ServiceManager, so we remove them and
make ServiceManager slightly less of a God class.

Test: boot bullhead
Test: init unit tests
Change-Id: Ia6e546fe5292255412245256f7d230af4ece135f
2017-08-01 11:06:04 -07:00
Tom Cherry
67dee626e0 init: remove Parser singleton and related cleanup
* Remove the Parser singleton (Hooray!)
* Rename parser.* to tokenizer.* as this is actually a tokenizer
* Rename init_parser.* to parser.* as this is a generic parser
* Move contents of init_parser_test.cpp to service_test.cpp as this
  actually is a test of the parsing in MakeExecOneshotService() and
  nothing related to (init_)parser.cpp

Test: boot bullhead
Test: bool sailfish
Test: init unit tests
Change-Id: I4fe39e6483f58ebd3ce5ee715a45dbba0acf5d91
2017-07-27 13:23:32 -07:00
Tom Cherry
81f5d3ebef init: create android::init:: namespace
With some small fixups along the way

Test: Boot bullhead
Test: init unit tests
Change-Id: I7beaa473cfa9397f845f810557d1631b4a462d6a
2017-06-23 13:21:20 -07:00
Tom Cherry
33838b1156 init: change kill order and fix error reporting in KillProcessGroup()
First kill the process group before killing the cgroup to catch
the hopeful case that killing the cgroup becomes a no-op as all of its
processes have already been killed.

Do not report an error if kill fails due to ESRCH, as this happens
often when reaping processes due to the order in which we call
waitpid() and kill().

Do not call killProcessGroup in libprocessgroup if we have already
successfully killed and removed a process group.

Bug: 36661364
Bug: 36701253
Bug: 37540956

Test: Reboot bullhead
Test: Start and stop services
Test: Init unit tests
Change-Id: I172acf0f8e00189f910f865f4635a7b1782fc7e3
2017-05-04 12:33:19 -07:00
Tom Cherry
7da548578c init: add an initializer for keychord_id_
Add unit test to ensure all POD types of Service are initialized.

Bug: 37855222
Test: Ensure bugreport is triggered via keychord properly.
Test: New unit tests
Change-Id: If2cfea15a74ab417a7b909a60c264cb8eb990de7
2017-05-01 15:35:07 -07:00