lib/tlpi_hdr.h

This is lib/tlpi_hdr.h (Listing 3-1, page 51), an example program file from the book, The Linux Programming Interface.

The source code file is copyright 2010, Michael Kerrisk, and is licensed under the GNU Lesser General Public License, version 3.

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  Cover of The Linux Programming Interface
/* tlpi_hdr.h

   Standard header file used by nearly all of our example programs.
*/
#ifndef TLPI_HDR_H
#define TLPI_HDR_H      /* Prevent accidental double inclusion */

#include <sys/types.h>  /* Type definitions used by many programs */
#include <stdio.h>      /* Standard I/O functions */
#include <stdlib.h>     /* Prototypes of commonly used library functions,
                           plus EXIT_SUCCESS and EXIT_FAILURE constants */
#include <unistd.h>     /* Prototypes for many system calls */
#include <errno.h>      /* Declares errno and defines error constants */
#include <string.h>     /* Commonly used string-handling functions */

#include "get_num.h"    /* Declares our functions for handling numeric
                           arguments (getInt(), getLong()) */

#include "error_functions.h"  /* Declares our error-handling functions */

/* Unfortunately some UNIX implementations define FALSE and TRUE -
   here we'll undefine them */

#ifdef TRUE
#undef TRUE
#endif

#ifdef FALSE
#undef FALSE
#endif

typedef enum { FALSE, TRUE } Boolean;

#define min(m,n) ((m) < (n) ? (m) : (n))
#define max(m,n) ((m) > (n) ? (m) : (n))

/* Some systems don't define 'socklen_t' */

#if defined(__sgi)
typedef int socklen_t;
#endif

#if defined(__sun)
#include <sys/file.h>           /* Has definition of FASYNC */
#endif

#if ! defined(O_ASYNC) && defined(FASYNC)
/* Some systems define FASYNC instead of O_ASYNC */
#define O_ASYNC FASYNC
#endif

#if defined(MAP_ANON) && ! defined(MAP_ANONYMOUS)
/* BSD derivatives usually have MAP_ANON, not MAP_ANONYMOUS */
#define MAP_ANONYMOUS MAP_ANON

#endif

#if ! defined(O_SYNC) && defined(O_FSYNC)
/* Some implementations have O_FSYNC instead of O_SYNC */
#define O_SYNC O_FSYNC
#endif

#if defined(__FreeBSD__)

/* FreeBSD uses these alternate names for fields in the sigval structure */

#define sival_int sigval_int
#define sival_ptr sigval_ptr
#endif

#endif

 

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