Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxscripts.h"

#include "zbxexpression.h"

​

#include "zbxexec.h"

#include "zbxdbhigh.h"

#include "zbxtasks.h"

#include "zbxembed.h"

#include "zbxnum.h"

#include "zbxparam.h"

#include "zbxmutexs.h"

#include "zbxshmem.h"

#include "zbx_availability_constants.h"

#include "zbx_scripts_constants.h"

#include "zbxpoller.h"

#ifdef HAVE_OPENIPMI

#include "zbxipmi.h"

#endif

#include "zbxalgo.h"

#include "zbxavailability.h"

#include "zbxcacheconfig.h"

#include "zbxdb.h"

#include "zbxjson.h"

#include "zbxstr.h"

#include "zbxinterface.h"

​

#define REMOTE_COMMAND_NEW      0

#define REMOTE_COMMAND_RESULT_OOM   1

#define REMOTE_COMMAND_RESULT_WAIT  2

#define REMOTE_COMMAND_COMPLETED    4

​

static zbx_uint64_t remote_command_cache_size = 256 * ZBX_KIBIBYTE;

​

static zbx_mutex_t  remote_commands_lock = ZBX_MUTEX_NULL;

static zbx_shmem_info_t *remote_commands_mem = NULL;

ZBX_SHMEM_FUNC_IMPL(__remote_commands, remote_commands_mem)

typedef struct

{

    zbx_uint64_t        maxid;

    int         commands_num;

    zbx_hashset_t       commands;

}

zbx_remote_commands_t;

​

zbx_remote_commands_t   *remote_commands = NULL;

​

typedef struct

{

    zbx_uint64_t        id;

    zbx_uint64_t        hostid;

    char            *command;

    volatile unsigned char  flag;

    char            *value;

    char            *error;

}

zbx_rc_command_t;

​

static zbx_hash_t   remote_commands_commands_hash_func(const void *data)

{

    return ZBX_DEFAULT_UINT64_HASH_FUNC(&((const zbx_rc_command_t *)data)->id);

}

​

static int  remote_commands_commands_compare_func(const void *d1, const void *d2)

{

    const zbx_rc_command_t  *command1 = (const zbx_rc_command_t *)d1;

    const zbx_rc_command_t  *command2 = (const zbx_rc_command_t *)d2;

​

    ZBX_RETURN_IF_NOT_EQUAL(command1->id, command2->id);

​

    return 0;

}

​

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

 *                                                                            *

 * Purpose: initializes active remote commands cache                          *

 *                                                                            *

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

int zbx_init_remote_commands_cache(char **error)