Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

#include "zbxnix.h"

​

#include "fatal.h"

#include "sigcommon.h"

​

#include "zbxcommon.h"

#include "zbxlog.h"

#include "pid.h"

#include "zbx_rtc_constants.h"

#include "zbxthreads.h"

​

#if defined(__linux__)

#define ZBX_PID_FILE_TIMEOUT 20

#define ZBX_PID_FILE_SLEEP_TIME 100000000

#endif

​

static int  parent_pid = -1;

​

/* pointer to function for getting caller's PID file location */

static zbx_get_pid_file_pathname_f  get_pid_file_pathname_cb = NULL;

​

extern pid_t    *threads;

extern int  threads_num;

​

extern int  get_process_info_by_thread(int local_server_num, unsigned char *local_process_type,

        int *local_process_num);

​

static zbx_signal_handler_f sigusr_handler;

static zbx_signal_redirect_f    signal_redirect_handler;

​

#ifdef HAVE_SIGQUEUE

/******************************************************************************

 *                                                                            *

 * Purpose: common SIGUSR1 handler for Zabbix processes                       *

 *                                                                            *

 ******************************************************************************/

static void common_sigusr_handler(int flags)

{

    switch (ZBX_RTC_GET_MSG(flags))

    {

        case ZBX_RTC_LOG_LEVEL_INCREASE:

            zabbix_increase_log_level();

            break;

        case ZBX_RTC_PROF_ENABLE:

            zbx_prof_enable(ZBX_RTC_GET_SCOPE(flags));

            break;

        case ZBX_RTC_PROF_DISABLE:

            zbx_prof_disable();

            break;

        case ZBX_RTC_LOG_LEVEL_DECREASE:

            zabbix_decrease_log_level();

            break;

        default:

            if (NULL != sigusr_handler)

                sigusr_handler(flags);

            break;

    }

}

​

void    zbx_signal_process_by_type(int proc_type, int proc_num, int flags, char **out)

{

    int     process_num, found = 0, i, failed_num = 0;

    union sigval    s;

    unsigned char   process_type;

    size_t      out_alloc = 0, out_offset = 0;

​

    s.sival_ptr = NULL;

    s.ZBX_SIVAL_INT = flags;

​

    for (i = 0; i < threads_num; i++)

    {

        if (FAIL == get_process_info_by_thread(i + 1, &process_type, &process_num))