unp_readn.h

#include "unp.h"

ssize_t readn(int filedes, void *buff, size_t nbytes);
ssize_t writen(int filedes, const void *buff, size_t nbytes);
ssize_t readline(int filedes, void *buff, size_t maxlen);

/* All return: number of bytes read or written, –1 on error */