程序4-2 access函数实例

 //http://blog.chinaunix.net/uid-24549279-id-71355.html
 /*
  ============================================================================
  Name        : test.c
  Author      : blank
  Version     :
  Copyright   : Your copyright notice
  Description : 程序4-2 access函数实例
  ============================================================================
 */

 #include <stdio.h>
 #include <fcntl.h>
 #include <sys/stat.h>
 #include "ourhdr.h"

 #define BUFFSIZE 4096

 int main(int argc, char *argv[])
 {
     if (argc != ){
         err_quit("usage: ./test <filename>\n");
     }

     if (access(argv[], R_OK) < ){
         err_ret("access error for %s", argv[]);
     }else{
         printf("read access OK\n");
     }

     if (open(argv[], O_RDONLY) < ){
         err_ret("open error for %s", argv[]);
     }else{
         printf("open for read OK\n");
     }

     exit();
 }