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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2022 Red Hat, Inc
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "rgw_signal.h"
#include "global/signal_handler.h"
#include "common/safe_io.h"
#include "common/errno.h"
#include "rgw_main.h"
#include "rgw_log.h"
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#define dout_subsys ceph_subsys_rgw
#define dout_context g_ceph_context
static int signal_fd[2] = {0, 0};
namespace rgw {
namespace signal {
void sighup_handler(int signum) {
if (rgw::AppMain::ops_log_file != nullptr) {
rgw::AppMain::ops_log_file->reopen();
}
g_ceph_context->reopen_logs();
} /* sighup_handler */
void signal_shutdown()
{
int val = 0;
int ret = write(signal_fd[0], (char *)&val, sizeof(val));
if (ret < 0) {
derr << "ERROR: " << __func__ << ": write() returned "
<< cpp_strerror(errno) << dendl;
}
} /* signal_shutdown */
void wait_shutdown()
{
int val;
int r = safe_read_exact(signal_fd[1], &val, sizeof(val));
if (r < 0) {
derr << "safe_read_exact returned with error" << dendl;
}
} /* wait_shutdown */
int signal_fd_init()
{
return socketpair(AF_UNIX, SOCK_STREAM, 0, signal_fd);
} /* signal_fd_init */
void signal_fd_finalize()
{
close(signal_fd[0]);
close(signal_fd[1]);
} /* signal_fd_finalize */
void handle_sigterm(int signum)
{
dout(1) << __func__ << dendl;
// send a signal to make fcgi's accept(2) wake up. unfortunately the
// initial signal often isn't sufficient because we race with accept's
// check of the flag wet by ShutdownPending() above.
if (signum != SIGUSR1) {
signal_shutdown();
// safety net in case we get stuck doing an orderly shutdown.
uint64_t secs = g_ceph_context->_conf->rgw_exit_timeout_secs;
if (secs)
alarm(secs);
dout(1) << __func__ << " set alarm for " << secs << dendl;
}
} /* handle_sigterm */
}} /* namespace rgw::signal */
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