umask.c

UNIX高级环境编程（第二版）文件系统部分的程序

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

int
main(void)
{
    umask(0);
    if (creat("foo", S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP |
                                         S_IROTH | S_IWOTH) < 0)
        err_sys("creat error for foo");

    umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
    if (creat("bar", S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP |
                                         S_IROTH | S_IWOTH) < 0)
        err_sys("creat error for bar");
    exit(0);
}