uhziel

#include "apue.h"
#include <fcntl.h>
#include <string.h>

char    buf1[] = "abcdefghij";
char    buf2[] = "ABCDEFGHIJ";

int main()
{
        int fd = open("file.hole", O_WRONLY | O_CREAT | O_TRUNC, FILE_MODE);

uhziel

#include "apue.h"

#define BUFFSIZE        4096

int main()
{
        int n;
        char buf[BUFFSIZE];

        while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0)

uhziel

#include "apue.h"
#include <fcntl.h>

int main(int argc, char *argv[])
{
        int val;

        if(argc != 2)
        {
                err_quit("usage: %s <filedescriptor>", argv[0]);

uhziel

/*
 * Write your own dup2 function that performs the same service as the dup2 function described in Section 3.12,
 * without calling the fcntl function. Be sure to handle errors correctly.
*/

/* TODO */

uhziel

#include "apue.h"

int main(int argc, char *argv[])
{
        int i;
        struct stat buf;
        char *ptr;

        for (i = 1; i < argc; i++)
        {

uhziel

#include "apue.h"
#include <fcntl.h>

int main(int argc, char *argv[])
{
        if (argc != 2)
        {
                err_quit("usage: %s <pathname>", argv[0]);
        }
        if (access(argv[1], R_OK) < 0)

uhziel

#include <fcntl.h>

#define RWXRWXRWX (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH)

int main(void)
{
        int old_umask = umask(0);
        printf("old_umask %o\n", old_umask);
        if (creat("foo", RWXRWXRWX) < 0)
        {

uhziel

#include "apue.h"

int main()
{
        struct stat statbuf;

        if (stat("foo", &statbuf) < 0)
        {
                err_sys("stat err for foo");
        }

uhziel

#include "apue.h"
#include <fcntl.h>

int main(void)
{
        if (open("tmpfile", O_RDWR) < 0)
        {
                err_sys("open error");
        }
        if (unlink("tmpfile") < 0)

uhziel

#include "apue.h"
#include <fcntl.h>
#include <utime.h>

int main(int argc, char *argv[])
{
        int i;
        int fd;
        struct stat statbuf;
        struct utimbuf timebuf;