C언어로 DISK IO 정보 읽어오기

vector<partition_info> getDiskIO();

int main()
{
  int i;
  vector<partition_info> diskio;
  cout << "Dev\t\tRio\t\tWio" << endl;
  while(1)
  {
    diskio = getDiskIO();
    for (i = 0; i < diskio.size(); i++)
    {
      cout << diskio[i].name <<  "\t\t" << diskio[i].rio 
          << "\t\t" << diskio[i].wio << endl;
    }
    sleep(2);
  }
}

typedef struct _partion_info
{
  char major[16];
  char minor[16];
  char blocks[16];
  char name[24];
  char rio[16];
  char rmerge[16];
  char rsect[16];
  char ruse[16];
  char wio[16];
  char wmerge[16];
  char wsect[16];
  char wuse[16];
  char running[16];
  char use[16];
  char aveq[16];
} partition_info;

#define partition_format "%s %s %s %s %s %s %s %s %s %s %s %s %s %s %s"

vector<partition_info> getDiskIO()
{
  FILE *fp;
  char line[512];
  class Config *esmCfg;
  int last_time = 0;
  int n;
  int first = 0;
  partition_info lpartition_info;
  vector<partition_info> vpartition_info;

  if ((fp = fopen("/proc/partitions", "r")) == NULL)
  {
    perror("fopen error");
  }
  char major[12];

  first = 0;

  while(fgets(line, 511, fp) != NULL)
  {
    if (first == 0)
    {
      first ++;
      continue;
    }
    n = sscanf(line,
        partition_format,
        lpartition_info.major,
        lpartition_info.minor,
        lpartition_info.blocks,
        lpartition_info.name,
        lpartition_info.rio,
        lpartition_info.rmerge,
        lpartition_info.rsect,
        lpartition_info.ruse,
        lpartition_info.wio,
        lpartition_info.wmerge,
        lpartition_info.wsect,
        lpartition_info.wuse,
        lpartition_info.running,
        lpartition_info.use,
        lpartition_info.aveq
        );
    // 포맷에 맞지 않을 경우 건너 뛴다.
    if(n < 10)
    {
      continue;
    }

    if(!isdigit(lpartition_info.name[strlen(lpartition_info.name) - 1 ]))
    {
      vpartition_info.push_back(lpartition_info);
    }
  }
  fclose(fp);
  return vpartition_info;
}