Replace NULL macro defs with null.h include

commands/elvis/opts.c

@@ -15,9 +15,7 @@
 #include "config.h"
 #include "vi.h"
 #include "ctype.h"
-#ifndef NULL
+#include <sys/null.h>
-#define NULL (char *)0
-#endif
 extern char	*getenv();
 
 /* maximum width to permit for strings, including ="" */

commands/postmort/postmort.c

@@ -45,7 +45,6 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
-#undef NULL
 #include <string.h>
 #include <unistd.h>
 

drivers/dec21140A/dec21140A.h

@@ -9,11 +9,10 @@ by VirtualPC 2007
 Created: 09/01/2009   Nicolas Tittley (first.last @ gmail DOT com)
 */
 
+#include <sys/null.h>
 
 #define DE_FKEY 8  /* Shitf+ this value will dump info on console */
 
-#undef  NULL
-#define NULL ((void *)0)
 #define NOT(x) (~(x))
 
 #if debug == 1

drivers/dpeth/dp.h

@@ -31,6 +31,8 @@
 **  Initial revision for Minix 3.0.6
 */
 
+#include <sys/null.h>
+
 #undef  ENABLE_3C501
 #undef  ENABLE_3C503
 #undef  ENABLE_3C509
@@ -47,8 +49,6 @@
 #define ENABLE_DP8390	(ENABLE_3C503|ENABLE_WDETH|ENABLE_NE2000)
 #define	HAVE_BUFFERS	(ENABLE_3C501|ENABLE_3C509)
 
-#undef  NULL
-#define NULL ((void *)0)
 #define NOT(x) (~(x))
 
 #if debug == 1

include/locale.h

@@ -31,7 +31,7 @@ struct lconv {
   char n_sign_posn;		/* CHAR_MAX */
 };
 
-#define NULL    ((void *)0)
+#include <sys/null.h>
 
 #define LC_ALL             1
 #define LC_COLLATE         2

include/minix/const.h

@@ -44,7 +44,8 @@
 
 #define SUPER_USER ((uid_t) 0)	/* uid_t of superuser */
 
-#define NULL     ((void *)0)	/* null pointer */
+#include <sys/null.h>      /* NULL Pointer */
+
 #define SCPVEC_NR	  64	/* max # of entries in a SYS_VSAFECOPY* request */
 #define NR_IOREQS	  64
 				/* maximum number of entries in an iorequest */

include/stddef.h

@@ -3,7 +3,7 @@
 #ifndef _STDDEF_H
 #define _STDDEF_H
 
-#define NULL   ((void *)0)
+#include <sys/null.h>
 
 /* The following is not portable, but the compiler accepts it. */
 #define offsetof(type, ident)	((size_t) (unsigned long) &((type *)0)->ident)

include/stdio.h

@@ -13,6 +13,8 @@
 #include <ansi.h>
 #endif
 
+#include <sys/null.h>   /* For NULL */
+
 /*
  * Focus point of all stdio activity.
  */
@@ -50,7 +52,6 @@ typedef struct __iobuf {
 #define	stderr		(&__stderr)
 
 #define	BUFSIZ		4096
-#define	NULL		((void *)0)
 #define	EOF		(-1)
 
 #define	FOPEN_MAX	20

include/stdlib.h

@@ -7,8 +7,7 @@
 #include <ansi.h>
 #endif
 
-/* The macros are NULL, EXIT_FAILURE, EXIT_SUCCESS, RAND_MAX, and MB_CUR_MAX.*/
+#include <sys/null.h>
-#define NULL    ((void *)0)
 
 #define EXIT_FAILURE       1	/* standard error return using exit() */
 #define EXIT_SUCCESS       0	/* successful return using exit() */

include/time.h

@@ -9,14 +9,14 @@
 #ifndef _TIME_H
 #define _TIME_H
 
+#include <sys/null.h>
+
 #define CLOCKS_PER_SEC    60
 
 #ifdef _POSIX_SOURCE
 #define CLK_TCK CLOCKS_PER_SEC	/* obsolescent mame for CLOCKS_PER_SEC */
 #endif
 
-#define NULL    ((void *)0)
-
 #ifndef _SIZE_T
 #define _SIZE_T
 typedef unsigned int size_t;

include/unistd.h

@@ -55,7 +55,7 @@
 #define SI_PROCPUB_TAB	   11	/* copy of public entries of process table */
 
 /* NULL must be defined in <unistd.h> according to POSIX Sec. 2.7.1. */
-#define NULL    ((void *)0)
+#include <sys/null.h>
 
 /* The following relate to configurable system variables. POSIX Table 4-2. */
 #define _SC_ARG_MAX	   1

lib/libtimers/timers.h

@@ -3,5 +3,4 @@
  */
 
 #include <timers.h>		/* definitions and function prototypes */
-#define NULL 	(void *) 0	/* null-pointer definition */
+#include <sys/null.h>
-