使用fprintf（）时修正定义的错误，同时修改minix 3.1.6的内核

Question

我正在修改minix 3.1.6的内核作为我的本科OS项目的一部分，我打算首先分析之前用它实现的调度算法 在某个文件中存储每个进程的调度相关信息，可以在以后进行分析。

在修改proc.c时，我在使用fprintf（）将数据存储到某个文件时得到了Multiply定义的错误，同时fopen（）工作正常。

我对这一切都很陌生，所以任何帮助都将受到赞赏。 在此先感谢............

这是一段代码..

PRIVATE void sched(rp, queue, front)
register struct proc *rp;           /* process to be scheduled */
int *queue;                 /* return: queue to use */
int *front;                   /* return: front or back */

{

/* This function determines the scheduling policy.  It is called whenever a
 * process must be added to one of the scheduling queues to decide where to
 * insert it.  As a side-effect the process' priority may be updated.  
 */
  int time_left = (rp->p_ticks_left > 0);   /* quantum fully consumed */
   /* Check whether the process has time left. Otherwise give a new quantum 
   * and lower the process' priority, unless the process already is in the 
   * lowest queue.  
   */
  if (! time_left) {                /* quantum consumed ? */
      rp->p_ticks_left = rp->p_quantum_size;    /* give new quantum */
      if (rp->p_priority < (NR_SCHED_QUEUES-1)) {
          rp->p_priority += 1;          /* lower priority */
      }
  }
    FILE *fp = fopen("/usr/newlog.txt","a");
   /* If there is time left, the process is added to the front of its queue, 
   * so that it can immediately run. The queue to use simply is always the
   * process' current priority.*/ 
  fprintf(fp,"{\nprocess name: %s\nprocess quantum: %d\ntime left: %d\nprocess queue: %d\n}\n\n",
  rp->p_name,rp->p_quantum_size,rp->p_ticks_left,rp->p_priority);
  *queue = rp->p_priority;
  *front = time_left;
   fclose(fp);
}