1 //http://blog.chinaunix.net/uid-24549279-id-71355.html 2 /* 3  ============================================================================ 4  Name        : test.c 5  Author      : blank 6  Version     : 7  Copyright   : Your copyright notice 8  Description : 程序4-3 umask函数实例 9  ============================================================================10 */11 12 #include 
     
      13 #include "ourhdr.h"14 15 #define RWRWRW (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)16 17 int main(int argc, char *argv[])18 {19     umask(0);20 21     if (creat("foo", RWRWRW) < 0){22         err_sys("create error for foo");23     }24 25     umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);26     if (creat("bar", RWRWRW) < 0){27         err_sys("creat error for bar");28     }29     exit(0);30 }