| // Copyright 2017 The Crashpad Authors. 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. |
| |
| #include "util/linux/scoped_pr_set_ptracer.h" |
| |
| #include <errno.h> |
| #include <sys/prctl.h> |
| |
| #include "base/logging.h" |
| |
| namespace crashpad { |
| |
| ScopedPrSetPtracer::ScopedPrSetPtracer(pid_t pid, bool may_log) |
| : success_(false), may_log_(may_log) { |
| success_ = prctl(PR_SET_PTRACER, pid, 0, 0, 0) == 0; |
| PLOG_IF(ERROR, !success_ && may_log && errno != EINVAL) << "prctl"; |
| } |
| |
| ScopedPrSetPtracer::~ScopedPrSetPtracer() { |
| if (success_) { |
| int res = prctl(PR_SET_PTRACER, 0, 0, 0, 0); |
| PLOG_IF(ERROR, res != 0 && may_log_) << "prctl"; |
| } |
| } |
| |
| } // namespace crashpad |