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/*
** Zabbix
** Copyright (C) 2001-2022 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.
**/
#ifndef ZABBIX_ZBXNIX_H
#define ZABBIX_ZBXNIX_H
#include "zbxsysinc.h"
/* IPC start */
#include "zbxtypes.h"
#include "zbxmutexs.h"
/* IPC end */
#if defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
int zbx_coredump_disable(void);
#endif
/* daemon start */
#if defined(_WINDOWS)
# error "This module allowed only for Unix OS"
#endif
typedef void (*zbx_on_exit_t)(int);
void zbx_set_exiting_with_fail(void);
void zbx_set_exiting_with_succeed(void);
int ZBX_IS_RUNNING(void);
int ZBX_EXIT_STATUS(void);
/* callback function prototype for getting PID file path */
typedef const char* (*zbx_get_pid_file_pathname_f)(void);
int zbx_daemon_start(int allow_root, const char *user, unsigned int flags,
zbx_get_pid_file_pathname_f get_pid_file_cb, zbx_on_exit_t zbx_on_exit_cb_arg);
void zbx_daemon_stop(void);
int zbx_sigusr_send(int flags, const char *pid_file_pathname);
void zbx_set_sigusr_handler(void (*handler)(int flags));
void zbx_signal_process_by_type(int proc_type, int proc_num, int flags, char **out);
void zbx_signal_process_by_pid(int pid, int flags, char **out);
/* daemon end */
/* IPC start */
#define ZBX_NONEXISTENT_SHMID (-1)
int zbx_shm_create(size_t size);
int zbx_shm_destroy(int shmid);
/* data copying callback function prototype */
typedef void (*zbx_shm_copy_func_t)(void *dst, size_t size_dst, const void *src);
/* dynamic shared memory data structure */
typedef struct
{
/* shared memory segment identifier */
int shmid;
/* allocated size */
size_t size;
/* callback function to copy data after shared memory reallocation */
zbx_shm_copy_func_t copy_func;
zbx_mutex_t lock;
}
zbx_dshm_t;
/* local process reference to dynamic shared memory data */
typedef struct
{
/* shared memory segment identifier */
int shmid;
/* shared memory base address */
void *addr;
}
zbx_dshm_ref_t;
int zbx_dshm_create(zbx_dshm_t *shm, size_t shm_size, zbx_mutex_name_t mutex,
zbx_shm_copy_func_t copy_func, char **errmsg);
int zbx_dshm_destroy(zbx_dshm_t *shm, char **errmsg);
int zbx_dshm_realloc(zbx_dshm_t *shm, size_t size, char **errmsg);
int zbx_dshm_validate_ref(const zbx_dshm_t *shm, zbx_dshm_ref_t *shm_ref, char **errmsg);
void zbx_dshm_lock(zbx_dshm_t *shm);
void zbx_dshm_unlock(zbx_dshm_t *shm);
/* IPC end*/
/* sighandler start */
void zbx_set_common_signal_handlers(zbx_on_exit_t zbx_on_exit_cb_arg);
void zbx_set_child_signal_handler(void);
void zbx_unset_child_signal_handler(void);
void zbx_set_metric_thread_signal_handler(void);
void zbx_block_signals(sigset_t *orig_mask);
void zbx_unblock_signals(const sigset_t *orig_mask);
void zbx_set_exit_on_terminate(void);
void zbx_unset_exit_on_terminate(void);
/* sighandler end */
int zbx_parse_rtc_options(const char *opt, int *message);
#endif /* ZABBIX_ZBXNIX_H */
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