Use of Advanced Programming in UNIX Environment (Third Edition)

1. Download the source code

http://apuebook.com/code3e.html

2. Install dependent libraries

     sudo apt-get install libbsd-dev  

3. Unzip and compile the source code

tar xvf src.3e.tar.gz
cd apue.3e/
make

4. You can put relevant header files in system environment variables

You can add the contents of Appendix B in apue.h

cp ./include/apue.h /usr/include/         
cp ./lib/libapue.a /usr/local/lib/ 
cp ./lib/libapue.a /usr/lib/
cp apueerror.h  /usr/include/

5. You can start to learn the content of the book

 

Appendix B, the content added to apue.h

#include <errno.h>
#include <stdarg.h>


static void err_doit(int, int, const char *, va_list);  
  
/*  
 *  * Nonfatal error related to a system call.  
 *  * Print a message and return.  
 *  */  
void  
err_ret(const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(1, errno, fmt, ap);  
        va_end(ap);  
}  
  
/*  
 *  * Fatal error related to a system call.  
 *  * Print a message and terminate.  
 *  */  
void  
err_sys(const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(1, errno, fmt, ap);  
        va_end(ap);  
        exit(1);  
}  
  
/*  
 *  * Fatal error unrelated to a system call.  
 *  * Error code passed as explict parameter.  
 *  * Print a message and terminate.  
 *  */  
void  
err_exit(int error, const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(1, error, fmt, ap);  
        va_end(ap);  
        exit(1);  
}  
  
/*  
 *  * Fatal error related to a system call.  
 *  * Print a message, dump core, and terminate.  
 *  */  
void  
err_dump(const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(1, errno, fmt, ap);  
        va_end(ap);  
        abort();        /* dump core and terminate */  
        exit(1);        /* shouldn't get here */  
}  
  
/*  
 *  * Nonfatal error unrelated to a system call.  
 *  * Print a message and return.  
 *  */  
void  
err_msg(const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(0, 0, fmt, ap);  
        va_end(ap);  
}  
  
/*  
 *  * Fatal error unrelated to a system call.  
 *  * Print a message and terminate.  
 *  */  
void  
err_quit(const char *fmt, ...)  
{  
        va_list     ap;  
          
        va_start(ap, fmt);  
        err_doit(0, 0, fmt, ap);  
        va_end(ap);  
        exit(1);  
}  
  
/*  
 *  * Print a message and return to caller.  
 *  * Caller specifies "errnoflag".  
 *  */  
static void  
err_doit(int errnoflag, int error, const char *fmt, va_list ap)  
{  
        char    buf[MAXLINE];  
        vsnprintf(buf, MAXLINE, fmt, ap);  
        if (errnoflag)  
        snprintf(buf+strlen(buf), MAXLINE-strlen(buf), ": %s",strerror(error));  
        strcat(buf, " ");  
        fflush(stdout);     /* in case stdout and stderr are the same */  
        fputs(buf, stderr);  
        fflush(NULL);       /* flushes all stdio output streams */  
}