5e4abd75cc
Those are typically symptoms of use-after-free or memory corruption in the program. It's better to catch such error sooner than later. That situation is also dangerous since if a valid descriptor would land under the invalid access, not the one which was intended for the operation, then the operation may be performed on the wrong file and result in corruption. Message-Id: <1565206788-31254-1-git-send-email-tgrabiec@scylladb.com>
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/*
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* Copyright 2015 ScyllaDB
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*/
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/* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <seastar/core/print.hh>
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#include <seastar/rpc/rpc.hh>
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#include <seastar/util/log.hh>
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#include <seastar/util/backtrace.hh>
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#include <seastar/core/abort_on_ebadf.hh>
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#include <exception>
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#include <system_error>
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#include <atomic>
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#include "exceptions.hh"
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#include <iostream>
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bool check_exception(system_error_lambda_t f)
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{
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auto e = std::current_exception();
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if (!e) {
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return false;
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}
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try {
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std::rethrow_exception(e);
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} catch (std::system_error &e) {
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return f(e);
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} catch (...) {
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return false;
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}
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return false;
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}
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bool is_system_error_errno(int err_no)
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{
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return check_exception([err_no] (const std::system_error &e) {
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auto code = e.code();
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return code.value() == err_no &&
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code.category() == std::system_category();
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});
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}
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bool should_stop_on_system_error(const std::system_error& e) {
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if (e.code().category() == std::system_category()) {
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// Whitelist of errors that don't require us to stop the server:
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switch (e.code().value()) {
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case EEXIST:
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case ENOENT:
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return false;
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default:
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break;
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}
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}
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return true;
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}
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std::atomic<bool> abort_on_internal_error{false};
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void set_abort_on_internal_error(bool do_abort) {
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abort_on_internal_error.store(do_abort);
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}
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void on_internal_error(seastar::logger& logger, const seastar::sstring& msg) {
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if (abort_on_internal_error.load()) {
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logger.error("{}, at: {}", msg.c_str(), seastar::current_backtrace());
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abort();
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} else {
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seastar::throw_with_backtrace<std::runtime_error>(msg.c_str());
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}
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}
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bool is_timeout_exception(std::exception_ptr e) {
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try {
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std::rethrow_exception(e);
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} catch (seastar::rpc::timeout_error& unused) {
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return true;
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} catch (seastar::semaphore_timed_out& unused) {
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return true;
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} catch (...) {
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}
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return false;
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}
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