// Copyright 2019 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/rlimit_util.h" #include <sys/resource.h> #include <cerrno> #include "test/util/cleanup.h" #include "test/util/logging.h" #include "test/util/posix_error.h" #include "test/util/test_util.h" namespace gvisor { namespace testing { PosixErrorOr<Cleanup> ScopedSetSoftRlimit(int resource, rlim_t newval) { struct rlimit old_rlim; if (getrlimit(resource, &old_rlim) != 0) { return PosixError(errno, "getrlimit failed"); } struct rlimit new_rlim = old_rlim; new_rlim.rlim_cur = newval; if (setrlimit(resource, &new_rlim) != 0) { return PosixError(errno, "setrlimit failed"); } return Cleanup([resource, old_rlim] { TEST_PCHECK(setrlimit(resource, &old_rlim) == 0); }); } } // namespace testing } // namespace gvisor