android_system_core/init/subcontext.proto
Tom Cherry c49719fc5d init: always expand args in subcontext
Currently init expands properties in arguments only when those
commands are run in a subcontext.  This creates a hole where
properties that should not be accessible from a given subcontext of
init can be accessed when running a command in the main init
executable (for example `start`).

This change creates a callback in subcontext init that simply expands
and returns arguments back to the main init process, to ensure that
only those properties that a subcontext can access get expanded.

Bug: 62875318
Test: boot bullhead, new unit tests
Change-Id: I2850009e70da877c08e4cc83350c727b0ea98796
2018-01-12 10:35:26 -08:00

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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
message SubcontextCommand {
message ExecuteCommand { repeated string args = 1; }
message ExpandArgsCommand { repeated string args = 1; }
oneof command {
ExecuteCommand execute_command = 1;
ExpandArgsCommand expand_args_command = 2;
}
}
message SubcontextReply {
message Failure {
optional string error_string = 1;
optional int32 error_errno = 2;
}
message ExpandArgsReply { repeated string expanded_args = 1; }
oneof reply {
bool success = 1;
Failure failure = 2;
ExpandArgsReply expand_args_reply = 3;
}
}