void zbx_db_save_item_changes(char **sql, size_t *sql_alloc, size_t *sql_offset, const zbx_vector_ptr_t *item_diff,
extern char *CONFIG_DBHOST;
extern char *CONFIG_DBNAME;
extern char *CONFIG_DBSCHEMA;
extern char *CONFIG_DBUSER;
extern char *CONFIG_DBPASSWORD;
extern char *CONFIG_DBSOCKET;
extern char *CONFIG_DB_TLS_CONNECT;
extern char *CONFIG_DB_TLS_CERT_FILE;
extern char *CONFIG_DB_TLS_KEY_FILE;
extern char *CONFIG_DB_TLS_CA_FILE;
extern char *CONFIG_DB_TLS_CIPHER;
extern char *CONFIG_DB_TLS_CIPHER_13;
extern int CONFIG_DBPORT;
extern int CONFIG_HISTSYNCER_FORKS;
extern int CONFIG_UNAVAILABLE_DELAY;
ZBX_TEMPLATE_LINK_MANUAL = 0,
ZBX_TEMPLATE_LINK_LLD = 1
zbx_host_template_link_type;
#define ZBX_DB_CONNECT_NORMAL 0
#define ZBX_DB_CONNECT_EXIT 1
#define ZBX_DB_CONNECT_ONCE 2
#define ZBX_INTERFACE_DNS_LEN 255
#define ZBX_INTERFACE_DNS_LEN_MAX (ZBX_INTERFACE_DNS_LEN + 1)