sockets/rdwrn.h

This is sockets/rdwrn.h, an example to accompany the book, The Linux Programming Interface.

This file is not printed in the book; it is the header file for rdwrn.c (Listing 61-1, page 1255).

In the listing below, the names of Linux system calls and C library functions are hyperlinked to manual pages from the Linux man-pages project, and the names of functions implemented in the book are hyperlinked to the implementations of those functions.

Cover of The Linux Programming Interface

Distribution version

/* rdwrn.h

   Header file for rdwrn.c.
*/
#ifndef RDWRN_H
#define RDWRN_H

#include <sys/types.h>

ssize_t readn(int fd, void *buf, size_t len);

ssize_t writen(int fd, const void *buf, size_t len);

#endif

Note that, in most cases, the programs rendered in these web pages are not free standing: you'll typically also need a few other source files (mostly in the lib/ subdirectory) as well. Generally, it's easier to just download the entire source tarball and build the programs with make(1). By hovering your mouse over the various hyperlinked include files and function calls above, you can see which other source files this file depends on.