Zabbix

/*

** 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 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 "common.h"

#include "sysinfo.h"

#include "zbxregexp.h"

#include "log.h"

​

#include <sys/sysctl.h>

​

#define ARGS_START_SIZE 64

​

/* in OpenBSD 5.1 KERN_PROC2 became KERN_PROC and structure kinfo_proc2 became kinfo_proc */

#if OpenBSD >= 201205       /* OpenBSD 5.1 version as year and month */

#   ifndef KERN_PROC2

#       define KERN_PROC2   KERN_PROC

#   endif

#   ifndef kinfo_proc2

#       define kinfo_proc2  kinfo_proc

#   endif

#endif

​

#ifdef KERN_PROC2

#   define ZBX_P_COMM   p_comm

#   define ZBX_P_FLAG   p_flag

#   define ZBX_P_PID    p_pid

#   define ZBX_P_STAT   p_stat

#   define ZBX_P_VM_TSIZE   p_vm_tsize

#   define ZBX_P_VM_DSIZE   p_vm_dsize

#   define ZBX_P_VM_SSIZE   p_vm_ssize

#else

#   define ZBX_P_COMM   kp_proc.p_comm

#   define ZBX_P_FLAG   kp_proc.p_flag

#   define ZBX_P_PID    kp_proc.p_pid

#   define ZBX_P_STAT   kp_proc.p_stat

#   define ZBX_P_VM_TSIZE   kp_eproc.e_vm.vm_tsize

#   define ZBX_P_VM_DSIZE   kp_eproc.e_vm.vm_dsize

#   define ZBX_P_VM_SSIZE   kp_eproc.e_vm.vm_ssize

#endif

​

static int  proc_argv(pid_t pid, char ***argv, size_t *argv_alloc, int *argc)

{

    size_t  sz;

    int mib[4];

​

    if (NULL == *argv)

    {

        *argv_alloc = ARGS_START_SIZE;

        *argv = zbx_malloc(*argv, *argv_alloc);

    }

​

    mib[0] = CTL_KERN;

    mib[1] = KERN_PROC_ARGS;

    mib[2] = (int)pid;

    mib[3] = KERN_PROC_ARGV;

retry:

    sz = *argv_alloc;

    if (0 != sysctl(mib, 4, *argv, &sz, NULL, 0))

    {

        if (errno == ENOMEM)

        {

            *argv_alloc *= 2;

            *argv = zbx_realloc(*argv, *argv_alloc);

            goto retry;

        }

        return FAIL;

    }

​

    mib[3] = KERN_PROC_NARGV;

​

    sz = sizeof(int);

    if (0 != sysctl(mib, 4, argc, &sz, NULL, 0))

        return FAIL;

​

    return SUCCEED;