Retire env.h

This was a MINIX3-specific header file placed outside of the minix/
header subdirectory, with its definitions duplicated in the more
standard minix/sysutil.h header.

Also make env_prefix(3) take constant pointers.

Change-Id: I243c38eb38e24eb98f0c0dddf7f340e7fec255f4

distrib/sets/lists/minix-comp/mi

@@ -292,7 +292,7 @@
 ./usr/include/disktab.h                                 minix-comp
 ./usr/include/dlfcn.h                                   minix-comp
 ./usr/include/elf.h                                     minix-comp
-./usr/include/env.h                                     minix-comp
+./usr/include/env.h                                     minix-comp      obsolete
 ./usr/include/err.h                                     minix-comp
 ./usr/include/errno.h                                   minix-comp
 ./usr/include/eti.h                                     minix-comp

minix/include/Makefile

@@ -2,7 +2,7 @@
 
 NOOBJ=		# defined
 
-INCS+=	env.h lib.h libutil.h varargs.h configfile.h
+INCS+=	lib.h libutil.h varargs.h configfile.h
 
 .include <bsd.own.mk>
 

minix/include/env.h

@@ -1,4 +0,0 @@
-int env_parse(const char *env, const char *fmt, int field, long *param, long min,
-	long max);
-void __dead env_panic(const char *env);
-int env_prefix(char *env, char *prefix);

minix/include/minix/sysutil.h

@@ -36,8 +36,8 @@ extern char **env_argv;
 
 void env_setargs(int argc, char *argv[]);
 int env_get_param(const char *key, char *value, int max_size);
-int env_prefix(char *env, char *prefix);
-void env_panic(const char *key);
+int env_prefix(const char *env, const char *prefix);
+void __dead env_panic(const char *key);
 int env_parse(const char *env, const char *fmt, int field,
 	long *param, long min, long max);
 

minix/lib/libsys/env_panic.c

@@ -1,6 +1,5 @@
 #include "sysutil.h"
 #include <string.h>
-#include <env.h>
 
 /*=========================================================================*
  *				env_panic				   *

minix/lib/libsys/env_parse.c

@@ -1,6 +1,5 @@
 #include "sysutil.h"
 #include <stdlib.h>
-#include <env.h>
 #include <string.h>
 #include <minix/param.h>
 

minix/lib/libsys/env_prefix.c

@@ -5,11 +5,11 @@
 /*=========================================================================*
  *				env_prefix				   *
  *=========================================================================*/
-int env_prefix(env, prefix)
-char *env;		/* environment variable to inspect */
-char *prefix;		/* prefix to test for */
+int env_prefix(const char *env, const char *prefix)
 {
 /* An environment setting may be prefixed by a word, usually "pci".  
+ * - env: environment variable to inspect
+ * - prefix: prefix to test for
  * Return TRUE if a given prefix is used.
  */
   char value[EP_BUF_SIZE];

minix/servers/pm/main.c

@@ -25,7 +25,6 @@
 #include <sys/utsname.h>
 #include <sys/wait.h>
 #include <machine/archtypes.h>
-#include <env.h>
 #include <assert.h>
 #include "mproc.h"
 

minix/servers/vm/break.c

@@ -29,7 +29,6 @@
 #include <minix/bitmap.h>
 
 #include <errno.h>
-#include <env.h>
 
 #include "glo.h"
 #include "vm.h"

minix/servers/vm/exit.c

@@ -16,7 +16,6 @@
 
 #include <errno.h>
 #include <assert.h>
-#include <env.h>
 
 #include "glo.h"
 #include "proto.h"

minix/servers/vm/fork.c

@@ -17,7 +17,6 @@
 
 #include <string.h>
 #include <errno.h>
-#include <env.h>
 #include <assert.h>
 
 #include "glo.h"

minix/servers/vm/main.c

@@ -23,7 +23,6 @@
 #include <ctype.h>
 #include <errno.h>
 #include <string.h>
-#include <env.h>
 #include <stdio.h>
 #include <assert.h>
 

minix/servers/vm/mmap.c

@@ -24,7 +24,6 @@
 #include <errno.h>
 #include <assert.h>
 #include <string.h>
-#include <env.h>
 #include <stdio.h>
 #include <fcntl.h>
 

minix/servers/vm/pagefaults.c

@@ -20,7 +20,6 @@
 
 #include <errno.h>
 #include <string.h>
-#include <env.h>
 #include <stdio.h>
 #include <fcntl.h>
 #include <signal.h>

minix/servers/vm/pagetable.c

@@ -21,7 +21,6 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <string.h>
-#include <env.h>
 #include <stdio.h>
 #include <fcntl.h>
 #include <stdlib.h>

minix/servers/vm/rs.c

@@ -20,7 +20,6 @@
 
 #include <errno.h>
 #include <string.h>
-#include <env.h>
 #include <stdio.h>
 #include <assert.h>
 

minix/servers/vm/slaballoc.c

@@ -18,7 +18,6 @@
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
-#include <env.h>
 
 #include <sys/param.h>
 

minix/servers/vm/utility.c

@@ -19,7 +19,6 @@
 #include <minix/rs.h>
 #include <string.h>
 #include <errno.h>
-#include <env.h>
 #include <unistd.h>
 #include <assert.h>
 #include <sys/cdefs.h>

minix/servers/vm/vfs.c

@@ -18,7 +18,6 @@
 #include <minix/bitmap.h>
 #include <string.h>
 #include <errno.h>
-#include <env.h>
 #include <unistd.h>
 #include <assert.h>
 #include <sys/param.h>