138 lines
3.3 KiB
C++
138 lines
3.3 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2015 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "shrpx_signal.h"
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#include <cerrno>
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#include "template.h"
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using namespace nghttp2;
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namespace shrpx {
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int shrpx_signal_block_all(sigset_t *oldset) {
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sigset_t newset;
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sigfillset(&newset);
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#ifndef NOTHREADS
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int rv;
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rv = pthread_sigmask(SIG_SETMASK, &newset, oldset);
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if (rv != 0) {
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errno = rv;
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return -1;
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}
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return 0;
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#else // NOTHREADS
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return sigprocmask(SIG_SETMASK, &newset, oldset);
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#endif // NOTHREADS
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}
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int shrpx_signal_unblock_all() {
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sigset_t newset;
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sigemptyset(&newset);
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#ifndef NOTHREADS
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int rv;
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rv = pthread_sigmask(SIG_SETMASK, &newset, nullptr);
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if (rv != 0) {
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errno = rv;
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return -1;
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}
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return 0;
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#else // NOTHREADS
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return sigprocmask(SIG_SETMASK, &newset, nullptr);
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#endif // NOTHREADS
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}
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int shrpx_signal_set(sigset_t *set) {
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#ifndef NOTHREADS
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int rv;
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rv = pthread_sigmask(SIG_SETMASK, set, nullptr);
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if (rv != 0) {
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errno = rv;
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return -1;
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}
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return 0;
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#else // NOTHREADS
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return sigprocmask(SIG_SETMASK, set, nullptr);
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#endif // NOTHREADS
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}
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namespace {
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template <typename Signals>
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void signal_set_handler(void (*handler)(int), Signals &&sigs) {
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struct sigaction act {};
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act.sa_handler = handler;
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sigemptyset(&act.sa_mask);
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int rv;
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for (auto sig : sigs) {
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rv = sigaction(sig, &act, nullptr);
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if (rv != 0) {
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auto error = errno;
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LOG(WARN) << "sigaction() with signal " << sig
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<< " failed: errno=" << error;
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}
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}
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}
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} // namespace
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namespace {
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constexpr auto master_proc_ign_signals = std::array<int, 1>{{SIGPIPE}};
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} // namespace
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namespace {
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constexpr auto worker_proc_ign_signals = std::array<int, 4>{
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{REOPEN_LOG_SIGNAL, EXEC_BINARY_SIGNAL, GRACEFUL_SHUTDOWN_SIGNAL, SIGPIPE}};
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} // namespace
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void shrpx_signal_set_master_proc_ign_handler() {
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signal_set_handler(SIG_IGN, master_proc_ign_signals);
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}
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void shrpx_signal_unset_master_proc_ign_handler() {
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signal_set_handler(SIG_DFL, master_proc_ign_signals);
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}
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void shrpx_signal_set_worker_proc_ign_handler() {
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signal_set_handler(SIG_IGN, worker_proc_ign_signals);
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}
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void shrpx_signal_unset_worker_proc_ign_handler() {
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signal_set_handler(SIG_DFL, worker_proc_ign_signals);
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}
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} // namespace shrpx
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