// 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. #include "test/util/posix_error.h" #include "test/util/save_util.h" namespace gvisor { namespace testing { PosixErrorOr<bool> IsRoot() { uid_t ruid, euid, suid; int rc = getresuid(&ruid, &euid, &suid); MaybeSave(); if (rc < 0) { return PosixError(errno, "getresuid"); } if (ruid != 0 || euid != 0 || suid != 0) { return false; } gid_t rgid, egid, sgid; rc = getresgid(&rgid, &egid, &sgid); MaybeSave(); if (rc < 0) { return PosixError(errno, "getresgid"); } if (rgid != 0 || egid != 0 || sgid != 0) { return false; } return true; } } // namespace testing } // namespace gvisor