Restart.cpp

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#include <Restart.h>
bool restartApplication(char **argv)
{
  char dirName[] = "/proc/self/fd/";
  char buf[256], fullName[256];
  DIR *dir = opendir(dirName);
  if(dir)
  {
    int dfd = dirfd(dir);
    struct dirent *entry = NULL;
    while((entry = readdir(dir)) != NULL)
    {
      if(entry->d_name[0] <= '9' && entry->d_name[0] >= '0')
      {
        int fd = atoi(entry->d_name);
        if(fd > 2 && fd != dfd)
        {
          sprintf(fullName, "%s%s", dirName, entry->d_name);
          int l = readlink(fullName, buf, sizeof(buf) - 1);
          buf[l] = '\0';
          printf("close %s\n",buf);
          close(fd);
        }
      }
    }
    closedir(dir);
  }
  else
  {
    printf("Can't open /proc/self/fd/\n");
  }
  int l = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
  buf[l] = '\0';
  if(execv(buf, argv) < 0)
  {
    perror("exec:");
    return false;
  }
  return true;
}