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4-4 chmod函数实例
9 ============================================================================
10 */
11
12 #include <fcntl.h>
13 #include "ourhdr.h"
14
15 int main(int argc, char *argv[])
16 {
17 struct stat buf;
18 if (stat("foo", &buf) < 0){
19 err_sys("stat error for foo");
20 }
21 /*
22 * turn on set-group-ID and turn off group-execute
23 */
24 if (chmod("foo", (buf.st_mode & ~S_IXGRP) | S_ISGID) < 0){
25 err_sys("chmod error for foo");
26 }
27
28 /*
29 *set absolute mode to rw-r--r--
30 */
31 if (chmod("bar", (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) < 0){
32 err_sys("chmod error for bar");
33 }
34 exit(0);
35 }
