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// Copyright 2018 The gVisor Authors.
//
// 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 = "proto3";

package gvisor;

message Strace {
  // Process name that made the syscall.
  string process = 1;

  // Syscall function name.
  string function = 2;

  // List of syscall arguments formatted as strings.
  repeated string args = 3;

  oneof info {
    StraceEnter enter = 4;
    StraceExit exit = 5;
  }
}

message StraceEnter {}

message StraceExit {
  // Return value formatted as string.
  string return = 1;

  // Formatted error string in case syscall failed.
  string error = 2;

  // Value of errno upon syscall exit.
  int64 err_no = 3;  // errno is a macro and gets expanded :-(

  // Time elapsed between syscall enter and exit.
  int64 elapsed_ns = 4;
}