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128 lines
3.7 KiB
128 lines
3.7 KiB
/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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#ifndef ZABBIX_ZBXNIX_H
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#define ZABBIX_ZBXNIX_H
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#include "zbxsysinc.h"
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/* IPC start */
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#include "zbxtypes.h"
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#include "zbxmutexs.h"
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/* IPC end */
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#if defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
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int zbx_coredump_disable(void);
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#endif
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/* daemon start */
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#if defined(_WINDOWS)
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# error "This module allowed only for Unix OS"
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#endif
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typedef void (*zbx_on_exit_t)(int);
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typedef void (*zbx_signal_handler_f)(int flags);
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typedef void (*zbx_signal_redirect_f)(int flags, zbx_signal_handler_f signal_handler_cb);
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void zbx_set_exiting_with_fail(void);
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void zbx_set_exiting_with_succeed(void);
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int ZBX_IS_RUNNING(void);
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int ZBX_EXIT_STATUS(void);
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/* callback function prototype for getting PID file path */
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typedef const char* (*zbx_get_pid_file_pathname_f)(void);
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int zbx_daemon_start(int allow_root, const char *user, unsigned int flags,
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zbx_get_pid_file_pathname_f get_pid_file_cb, zbx_on_exit_t zbx_on_exit_cb_arg, int config_log_type,
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const char *config_log_file, zbx_signal_redirect_f signal_redirect_cb);
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void zbx_daemon_stop(void);
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int zbx_sigusr_send(int flags, const char *pid_file_pathname);
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void zbx_set_sigusr_handler(void (*handler)(int flags));
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void zbx_signal_process_by_type(int proc_type, int proc_num, int flags, char **out);
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void zbx_signal_process_by_pid(int pid, int flags, char **out);
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/* daemon end */
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/* IPC start */
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#define ZBX_NONEXISTENT_SHMID (-1)
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int zbx_shm_create(size_t size);
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int zbx_shm_destroy(int shmid);
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/* data copying callback function prototype */
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typedef void (*zbx_shm_copy_func_t)(void *dst, size_t size_dst, const void *src);
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/* dynamic shared memory data structure */
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typedef struct
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{
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/* shared memory segment identifier */
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int shmid;
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/* allocated size */
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size_t size;
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/* callback function to copy data after shared memory reallocation */
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zbx_shm_copy_func_t copy_func;
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zbx_mutex_t lock;
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}
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zbx_dshm_t;
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/* local process reference to dynamic shared memory data */
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typedef struct
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{
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/* shared memory segment identifier */
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int shmid;
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/* shared memory base address */
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void *addr;
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}
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zbx_dshm_ref_t;
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int zbx_dshm_create(zbx_dshm_t *shm, size_t shm_size, zbx_mutex_name_t mutex,
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zbx_shm_copy_func_t copy_func, char **errmsg);
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int zbx_dshm_destroy(zbx_dshm_t *shm, char **errmsg);
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int zbx_dshm_realloc(zbx_dshm_t *shm, size_t size, char **errmsg);
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int zbx_dshm_validate_ref(const zbx_dshm_t *shm, zbx_dshm_ref_t *shm_ref, char **errmsg);
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void zbx_dshm_lock(zbx_dshm_t *shm);
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void zbx_dshm_unlock(zbx_dshm_t *shm);
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/* IPC end*/
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/* sighandler start */
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void zbx_set_common_signal_handlers(zbx_on_exit_t zbx_on_exit_cb_arg);
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void zbx_set_child_signal_handler(void);
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void zbx_unset_child_signal_handler(void);
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void zbx_set_metric_thread_signal_handler(void);
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void zbx_block_signals(sigset_t *orig_mask);
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void zbx_unblock_signals(const sigset_t *orig_mask);
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void zbx_set_exit_on_terminate(void);
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void zbx_unset_exit_on_terminate(void);
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void zbx_log_exit_signal(void);
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/* sighandler end */
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int zbx_parse_rtc_options(const char *opt, int *message);
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#endif /* ZABBIX_ZBXNIX_H */
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