Zabbix

/*

** 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.

**/

​

#include "common.h"

#include "sysinfo.h"

#include "stats.h"

#include "diskdevices.h"

#include "zbxjson.h"

​

#define ZBX_DEV_PFX     "/dev/"

#define ZBX_DEV_READ        0

#define ZBX_DEV_WRITE       1

#define ZBX_SYS_BLKDEV_PFX  "/sys/dev/block/"

​

#if defined(KERNEL_2_4)

#   define INFO_FILE_NAME   "/proc/partitions"

#   define PARSE(line)  if (sscanf(line, ZBX_FS_UI64 ZBX_FS_UI64 " %*d %s "         \

                    ZBX_FS_UI64 " %*d " ZBX_FS_UI64 " %*d "         \

                    ZBX_FS_UI64 " %*d " ZBX_FS_UI64 " %*d %*d %*d %*d", \

                &rdev_major,                            \

                &rdev_minor,                            \

                name,                               \

                &ds[ZBX_DSTAT_R_OPER],                      \

                &ds[ZBX_DSTAT_R_SECT],                      \

                &ds[ZBX_DSTAT_W_OPER],                      \

                &ds[ZBX_DSTAT_W_SECT]                       \

                ) != 7) continue

#else

#   define INFO_FILE_NAME   "/proc/diskstats"

#   define PARSE(line)  if (sscanf(line, ZBX_FS_UI64 ZBX_FS_UI64 " %s "         \

                    ZBX_FS_UI64 " %*d " ZBX_FS_UI64 " %*d "         \

                    ZBX_FS_UI64 " %*d " ZBX_FS_UI64 " %*d %*d %*d %*d", \

                &rdev_major,                            \

                &rdev_minor,                            \

                name,                               \

                &ds[ZBX_DSTAT_R_OPER],                      \

                &ds[ZBX_DSTAT_R_SECT],                      \

                &ds[ZBX_DSTAT_W_OPER],                      \

                &ds[ZBX_DSTAT_W_SECT]                       \

                ) != 7                              \

                &&                              \

                /* some disk partitions */                  \

                sscanf(line, ZBX_FS_UI64 ZBX_FS_UI64 " %s "         \

                    ZBX_FS_UI64 ZBX_FS_UI64                 \

                    ZBX_FS_UI64 ZBX_FS_UI64,                \

                &rdev_major,                            \

                &rdev_minor,                            \

                name,                               \

                &ds[ZBX_DSTAT_R_OPER],                      \

                &ds[ZBX_DSTAT_R_SECT],                      \

                &ds[ZBX_DSTAT_W_OPER],                      \

                &ds[ZBX_DSTAT_W_SECT]                       \

                ) != 7                              \

                ) continue

#endif

​

int get_diskstat(const char *devname, zbx_uint64_t *dstat)

{

    FILE        *f;

    char        tmp[MAX_STRING_LEN], name[MAX_STRING_LEN], dev_path[MAX_STRING_LEN];

    int     i, ret = FAIL, dev_exists = FAIL;

    zbx_uint64_t    ds[ZBX_DSTAT_MAX], rdev_major, rdev_minor;

    zbx_stat_t  dev_st;

    int     found = 0;

​

    for (i = 0; i < ZBX_DSTAT_MAX; i++)

        dstat[i] = (zbx_uint64_t)__UINT64_C(0);

​

    if (NULL != devname && '\0' != *devname && 0 != strcmp(devname, "all"))

    {

        *dev_path = '\0';

        if (0 != strncmp(devname, ZBX_DEV_PFX, ZBX_CONST_STRLEN(ZBX_DEV_PFX)))

            strscpy(dev_path, ZBX_DEV_PFX);

        strscat(dev_path, devname);

​