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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 13:19:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 13:19:22 +0000 |
commit | c21c3b0befeb46a51b6bf3758ffa30813bea0ff0 (patch) | |
tree | 9754ff1ca740f6346cf8483ec915d4054bc5da2d /fluent-bit/lib/monkey/mk_bin/mk_signals.c | |
parent | Adding upstream version 1.43.2. (diff) | |
download | netdata-c21c3b0befeb46a51b6bf3758ffa30813bea0ff0.tar.xz netdata-c21c3b0befeb46a51b6bf3758ffa30813bea0ff0.zip |
Adding upstream version 1.44.3.upstream/1.44.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fluent-bit/lib/monkey/mk_bin/mk_signals.c')
-rw-r--r-- | fluent-bit/lib/monkey/mk_bin/mk_signals.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/fluent-bit/lib/monkey/mk_bin/mk_signals.c b/fluent-bit/lib/monkey/mk_bin/mk_signals.c new file mode 100644 index 000000000..b2c9eb6e8 --- /dev/null +++ b/fluent-bit/lib/monkey/mk_bin/mk_signals.c @@ -0,0 +1,103 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ + +/* Monkey HTTP Server + * ================== + * Copyright 2001-2015 Monkey Software LLC <eduardo@monkey.io> + * + * 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 <monkey/monkey.h> +#include <monkey/mk_core.h> + +#include "monkey.h" +#include <string.h> +#include <signal.h> +#include <sys/types.h> +#include <sys/wait.h> + +static struct mk_server *server_context; + +void mk_signal_context(struct mk_server *ctx) +{ + server_context = ctx; +} + +/* when we catch a signal and want to exit we call this function + to do it gracefully */ +static void mk_signal_exit() +{ + /* ignore future signals to properly handle the cleanup */ + signal(SIGTERM, SIG_IGN); + signal(SIGINT, SIG_IGN); + signal(SIGHUP, SIG_IGN); + + mk_user_undo_uidgid(server_context); + mk_utils_remove_pid(server_context->path_conf_pidfile); + mk_exit_all(server_context); + + mk_info("Exiting... >:("); + _exit(EXIT_SUCCESS); +} + +static void mk_signal_handler(int signo, siginfo_t *si, void *context UNUSED_PARAM) +{ + switch (signo) { + case SIGTERM: + case SIGINT: + mk_signal_exit(); + break; + case SIGHUP: + /* + * TODO: + * we should implement the httpd config reload here (not in SIGUSR2). + * Daemon processes “overload” this signal with a mechanism to instruct them to + * reload their configuration files. Sending SIGHUP to Apache, for example, + * instructs it to reread httpd.conf. + */ + mk_signal_exit(); + break; + case SIGBUS: + case SIGSEGV: +#ifdef DEBUG + mk_utils_stacktrace(); +#endif + mk_err("%s (%d), code=%d, addr=%p", + strsignal(signo), signo, si->si_code, si->si_addr); + //close(sched->server_fd); + //pthread_exit(NULL); + abort(); + default: + /* let the kernel handle it */ + kill(getpid(), signo); + } + +} + +void mk_signal_init(void *context) +{ + struct sigaction act; + memset(&act, 0x0, sizeof(act)); + + /* allow signals to be handled concurrently */ + act.sa_flags = SA_SIGINFO | SA_NODEFER; + act.sa_sigaction = &mk_signal_handler; + + sigaction(SIGSEGV, &act, NULL); + sigaction(SIGBUS, &act, NULL); + sigaction(SIGHUP, &act, NULL); + sigaction(SIGINT, &act, NULL); + sigaction(SIGTERM, &act, NULL); + + mk_signal_context(context); +} |