// Copyright 2019 Google LLC. All Rights Reserved.
//
// 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.

// Proto for the communication between executor and sandboxed libunwind
syntax = "proto3";

package sandbox2;

message UnwindSetup {
  // Required
  // Process ID of the process to unwind
  uint64 pid = 1;
  // Register content for the process to unwind
  bytes regs = 2;
  // Optional
  // Maximum number of stack frames to unwind
  uint64 default_max_frames = 3;
  // Delimiter used in the result to separate the stack frames
  bytes delim = 4;
}

message UnwindResult {
  // Readable stacktrace, symbolized, each framed separated by the delim
  // specified in the UnwindSetup message
  bytes stacktrace = 1;
  // Stack frames
  repeated uint64 ip = 2;
}