remove ambiguity in version,ostype,osversion,osrelease and their constanity, they are and declarre 'em accordingly also removing private externies of those

20 files changed, 52 insertions, 59 deletions

diff --git a/sys/arch/amiga/amiga/machdep.c b/sys/arch/amiga/amiga/machdep.c
index 3f26e871dbc..431008ce8a2 100644
--- a/sys/arch/amiga/amiga/machdep.c
+++ b/sys/arch/amiga/amiga/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.67 2002/03/14 01:26:28 millert Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.68 2002/03/14 20:31:30 mickey Exp $	*/
 /*	$NetBSD: machdep.c,v 1.95 1997/08/27 18:31:17 is Exp $	*/
 
 /*
@@ -576,7 +576,6 @@ setregs(p, pack, stack, retval)
  * Info for CTL_HW
  */
 char cpu_model[120];
-extern char version[];
 
 #if defined(M68060)
 int m68060_pcr_init = 0x21;	/* make this patchable */
diff --git a/sys/arch/hp300/hp300/machdep.c b/sys/arch/hp300/hp300/machdep.c
index 2c9728b00a6..60766640803 100644
--- a/sys/arch/hp300/hp300/machdep.c
+++ b/sys/arch/hp300/hp300/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.79 2002/03/14 01:26:31 millert Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.80 2002/03/14 20:31:30 mickey Exp $	*/
 /*	$NetBSD: machdep.c,v 1.121 1999/03/26 23:41:29 mycroft Exp $	*/
 
 /*
@@ -505,7 +505,6 @@ setregs(p, pack, stack, retval)
  * Info for CTL_HW
  */
 char	cpu_model[120];
-extern	char version[];
 
 /*
  * Text description of models we support, indexed by machineid.
diff --git a/sys/arch/i386/i386/machdep.c b/sys/arch/i386/i386/machdep.c
index c5a0878c987..4b5087a449d 100644
--- a/sys/arch/i386/i386/machdep.c
+++ b/sys/arch/i386/i386/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.199 2002/03/14 16:52:11 mickey Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.200 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: machdep.c,v 1.214 1996/11/10 03:16:17 thorpej Exp $	*/
 
 /*-
@@ -622,7 +622,6 @@ setup_buffers(maxaddr)
  * Info for CTL_HW
  */
 char	cpu_model[120];
-extern	char version[];
 
 /*
  * Note: these are just the ones that may not have a cpuid instruction.
diff --git a/sys/arch/mvme68k/mvme68k/machdep.c b/sys/arch/mvme68k/mvme68k/machdep.c
index d6c7ee3c020..99d6d9ec766 100644
--- a/sys/arch/mvme68k/mvme68k/machdep.c
+++ b/sys/arch/mvme68k/mvme68k/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.66 2002/03/14 03:15:56 millert Exp $ */
+/*	$OpenBSD: machdep.c,v 1.67 2002/03/14 20:31:31 mickey Exp $ */
 
 /*
  * Copyright (c) 1995 Theo de Raadt
@@ -471,7 +471,6 @@ setregs(p, pack, stack, retval)
  * Info for CTL_HW
  */
 char  cpu_model[120];
-extern   char version[];
 
 int   cputyp;
 int   cpuspeed;
diff --git a/sys/arch/sun3/sun3/machdep.c b/sys/arch/sun3/sun3/machdep.c
index 68eef454519..26ffbcb7ac8 100644
--- a/sys/arch/sun3/sun3/machdep.c
+++ b/sys/arch/sun3/sun3/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.53 2002/03/14 03:16:01 millert Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.54 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: machdep.c,v 1.77 1996/10/13 03:47:51 christos Exp $	*/
 
 /*
@@ -93,7 +93,6 @@
 #include <machine/reg.h>
 
 extern char *cpu_string;
-extern char version[];
 extern short exframesize[];
 
 int physmem;
diff --git a/sys/arch/vax/vax/machdep.c b/sys/arch/vax/vax/machdep.c
index 7c7ef2d476d..fbd88328bc6 100644
--- a/sys/arch/vax/vax/machdep.c
+++ b/sys/arch/vax/vax/machdep.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: machdep.c,v 1.55 2002/03/14 01:26:48 millert Exp $ */
+/* $OpenBSD: machdep.c,v 1.56 2002/03/14 20:31:31 mickey Exp $ */
 /* $NetBSD: machdep.c,v 1.108 2000/09/13 15:00:23 thorpej Exp $	 */
 
 /*
@@ -174,7 +174,6 @@ void
 cpu_startup()
 {
 	caddr_t		v;
-	extern char	version[];
 	int		base, residual, i, sz;
 	vm_offset_t	minaddr, maxaddr;
 	vm_size_t	size;
diff --git a/sys/compat/common/kern_info_09.c b/sys/compat/common/kern_info_09.c
index 1c84d9e1a13..27b44bef1f8 100644
--- a/sys/compat/common/kern_info_09.c
+++ b/sys/compat/common/kern_info_09.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_info_09.c,v 1.8 2001/11/06 19:53:17 miod Exp $	*/
+/*	$OpenBSD: kern_info_09.c,v 1.9 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: kern_info_09.c,v 1.5 1996/02/21 00:10:59 cgd Exp $	*/
 
 /*
@@ -114,8 +114,8 @@ compat_09_sys_uname(p, v, retval)
 		syscallarg(struct outsname *) name;
 	} */ *uap = v;
 	struct outsname outsname;
-	char *cp, *dp, *ep;
-	extern char ostype[], osrelease[];
+	const char *cp;
+	char *dp, *ep;
 
 	strncpy(outsname.sysname, ostype, sizeof(outsname.sysname));
 	strncpy(outsname.nodename, hostname, sizeof(outsname.nodename));
diff --git a/sys/compat/common/kern_info_43.c b/sys/compat/common/kern_info_43.c
index 387c78cf3d0..ed6928800b2 100644
--- a/sys/compat/common/kern_info_43.c
+++ b/sys/compat/common/kern_info_43.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_info_43.c,v 1.11 2001/11/06 19:53:17 miod Exp $	*/
+/*	$OpenBSD: kern_info_43.c,v 1.12 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: kern_info_43.c,v 1.5 1996/02/04 02:02:22 christos Exp $	*/
 
 /*
@@ -205,7 +205,7 @@ compat_43_sys_getkerninfo(p, v, retval)
 	int error, name[5];
 	size_t size;
 
-	extern char ostype[], osrelease[], machine[];
+	extern char machine[];
 
 	if (SCARG(uap, size) && (error = copyin((caddr_t)SCARG(uap, size),
 	    (caddr_t)&size, sizeof(size))))
diff --git a/sys/compat/hpux/hpux_compat.c b/sys/compat/hpux/hpux_compat.c
index 6edaff6840a..f537a2d370e 100644
--- a/sys/compat/hpux/hpux_compat.c
+++ b/sys/compat/hpux/hpux_compat.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: hpux_compat.c,v 1.18 2002/03/14 01:26:49 millert Exp $	*/
+/*	$OpenBSD: hpux_compat.c,v 1.19 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: hpux_compat.c,v 1.35 1997/05/08 16:19:48 mycroft Exp $	*/
 
 /*
@@ -386,8 +386,7 @@ hpux_sys_utssys(p, v, retval)
 	int i;
 	int error;
 	struct hpux_utsname	ut;
-	extern char ostype[], hostname[], osrelease[], version[];
-	extern char machine[];
+	extern char hostname[], machine[];
 
 	switch (SCARG(uap, request)) {
 	/* uname */
diff --git a/sys/compat/ibcs2/ibcs2_stat.c b/sys/compat/ibcs2/ibcs2_stat.c
index 28bee548f1c..04534fc0eca 100644
--- a/sys/compat/ibcs2/ibcs2_stat.c
+++ b/sys/compat/ibcs2/ibcs2_stat.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ibcs2_stat.c,v 1.8 2002/03/14 01:26:50 millert Exp $	*/
+/*	$OpenBSD: ibcs2_stat.c,v 1.9 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: ibcs2_stat.c,v 1.5 1996/05/03 17:05:32 christos Exp $	*/
 
 /*
@@ -259,7 +259,7 @@ ibcs2_sys_utssys(p, v, retval)
 	case 0:			/* uname(2) */
 	{
 		struct ibcs2_utsname sut;
-		extern char ostype[], machine[], osrelease[];
+		extern char machine[];
 
 		bzero(&sut, ibcs2_utsname_len);
 		bcopy(ostype, sut.sysname, sizeof(sut.sysname) - 1);
diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index 0d72112a04a..17ed62e7b22 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: linux_misc.c,v 1.41 2002/03/14 01:26:50 millert Exp $	*/
+/*	$OpenBSD: linux_misc.c,v 1.42 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: linux_misc.c,v 1.27 1996/05/20 01:59:21 fvdl Exp $	*/
 
 /*
@@ -521,8 +521,7 @@ linux_sys_uname(p, v, retval)
 	struct linux_sys_uname_args /* {
 		syscallarg(struct linux_utsname *) up;
 	} */ *uap = v;
-	extern char ostype[], hostname[], osrelease[], version[], machine[],
-	    domainname[];
+	extern char hostname[], machine[], domainname[];
 	struct linux_utsname luts;
 	int len;
 	char *cp;
@@ -558,7 +557,7 @@ linux_sys_olduname(p, v, retval)
 	struct linux_sys_uname_args /* {
 		syscallarg(struct linux_oldutsname *) up;
 	} */ *uap = v;
-	extern char ostype[], hostname[], osrelease[], version[], machine[];
+	extern char hostname[], machine[];
 	struct linux_oldutsname luts;
 	int len;
 	char *cp;
@@ -587,7 +586,7 @@ linux_sys_oldolduname(p, v, retval)
 	struct linux_sys_uname_args /* {
 		syscallarg(struct linux_oldoldutsname *) up;
 	} */ *uap = v;
-	extern char ostype[], hostname[], osrelease[], version[], machine[];
+	extern char hostname[], machine[];
 	struct linux_oldoldutsname luts;
 	int len;
 	char *cp;
diff --git a/sys/compat/osf1/osf1_misc.c b/sys/compat/osf1/osf1_misc.c
index 13191c7dcce..de227667a5c 100644
--- a/sys/compat/osf1/osf1_misc.c
+++ b/sys/compat/osf1/osf1_misc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: osf1_misc.c,v 1.13 2000/08/12 20:46:42 ericj Exp $ */
+/* $OpenBSD: osf1_misc.c,v 1.14 2002/03/14 20:31:31 mickey Exp $ */
 /* $NetBSD: osf1_misc.c,v 1.55 2000/06/28 15:39:33 mrg Exp $ */
 
 /*
@@ -240,7 +240,7 @@ osf1_sys_uname(p, v, retval)
 	struct osf1_sys_uname_args *uap = v;
         struct osf1_utsname u;
         const char *cp;
-	extern char ostype[], hostname[], osrelease[], version[], machine[];
+	extern char hostname[], machine[];
         char *dp, *ep;
 
 	/* XXX would use stackgap, but our struct utsname is too big! */
diff --git a/sys/compat/sunos/sunos_misc.c b/sys/compat/sunos/sunos_misc.c
index b46a5c89020..69e0cd7c05e 100644
--- a/sys/compat/sunos/sunos_misc.c
+++ b/sys/compat/sunos/sunos_misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sunos_misc.c,v 1.36 2002/03/14 01:26:50 millert Exp $	*/
+/*	$OpenBSD: sunos_misc.c,v 1.37 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: sunos_misc.c,v 1.65 1996/04/22 01:44:31 christos Exp $	*/
 
 /*
@@ -636,7 +636,7 @@ sunos_sys_uname(p, v, retval)
 {
 	struct sunos_sys_uname_args *uap = v;
 	struct sunos_utsname sut;
-	extern char ostype[], machine[], osrelease[];
+	extern char machine[];
 
 	bzero(&sut, sizeof(sut));
 
diff --git a/sys/compat/svr4/svr4_stat.c b/sys/compat/svr4/svr4_stat.c
index d9698f40084..e72c58b1f81 100644
--- a/sys/compat/svr4/svr4_stat.c
+++ b/sys/compat/svr4/svr4_stat.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: svr4_stat.c,v 1.21 2002/03/14 01:26:51 millert Exp $	 */
+/*	$OpenBSD: svr4_stat.c,v 1.22 2002/03/14 20:31:31 mickey Exp $	 */
 /*	$NetBSD: svr4_stat.c,v 1.21 1996/04/22 01:16:07 christos Exp $	 */
 
 /*
@@ -523,8 +523,9 @@ svr4_sys_uname(p, v, retval)
 {
 	struct svr4_sys_uname_args *uap = v;
 	struct svr4_utsname	sut;
-	extern char ostype[], hostname[], osrelease[], version[], machine[];
-	char *cp, *dp, *ep;
+	extern char hostname[], machine[];
+	const char *cp;
+	char *dp, *ep;
 
 	bzero(&sut, sizeof(sut));
 
@@ -563,12 +564,11 @@ svr4_sys_systeminfo(p, v, retval)
 	register_t *retval;
 {
 	struct svr4_sys_systeminfo_args *uap = v;
-	char *str;
+	const char *str;
 	int name;
 	int error;
 	long len;
-	extern char ostype[], hostname[], osrelease[],
-		    version[], machine[], domainname[];
+	extern char hostname[], machine[], domainname[];
 #ifdef __sparc__
 	extern char *cpu_class;
 #endif
diff --git a/sys/compat/ultrix/ultrix_misc.c b/sys/compat/ultrix/ultrix_misc.c
index 7860af1e99e..3dd59b3e51e 100644
--- a/sys/compat/ultrix/ultrix_misc.c
+++ b/sys/compat/ultrix/ultrix_misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ultrix_misc.c,v 1.25 2002/03/14 03:16:03 millert Exp $	*/
+/*	$OpenBSD: ultrix_misc.c,v 1.26 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: ultrix_misc.c,v 1.23 1996/04/07 17:23:04 jonathan Exp $	*/
 
 /*
@@ -401,7 +401,7 @@ ultrix_sys_uname(p, v, retval)
 {
 	struct ultrix_sys_uname_args *uap = v;
 	struct ultrix_utsname sut;
-	extern char ostype[], machine[], osrelease[];
+	extern char machine[];
 
 	bzero(&sut, sizeof(sut));
 
diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh
index 6cf195cac66..a2ebded46ce 100644
--- a/sys/conf/newvers.sh
+++ b/sys/conf/newvers.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: newvers.sh,v 1.37 2001/12/04 00:05:10 niklas Exp $
+#	$OpenBSD: newvers.sh,v 1.38 2002/03/14 20:31:31 mickey Exp $
 #	$NetBSD: newvers.sh,v 1.17.2.1 1995/10/12 05:17:11 jtc Exp $
 #
 # Copyright (c) 1984, 1986, 1990, 1993
@@ -66,11 +66,11 @@ ost="OpenBSD"
 osr="3.0"
 
 cat >vers.c <<eof
-char ostype[] = "${ost}";
-char osrelease[] = "${osr}";
-char osversion[] = "${id}#${v}";
-char sccs[8] = { ' ', ' ', ' ', ' ', '@', '(', '#', ')' };
-char version[] =
+const char ostype[] = "${ost}";
+const char osrelease[] = "${osr}";
+const char osversion[] = "${id}#${v}";
+const char sccs[8] = { ' ', ' ', ' ', ' ', '@', '(', '#', ')' };
+const char version[] =
     "${ost} ${osr}-current (${id}) #${v}: ${t}\n    ${u}@${h}:${d}\n";
 eof
 
diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index ed9437a6907..d46f5117eaa 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: init_main.c,v 1.93 2002/03/14 01:27:04 millert Exp $	*/
+/*	$OpenBSD: init_main.c,v 1.94 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: init_main.c,v 1.84.4.1 1996/06/02 09:08:06 mrg Exp $	*/
 
 /*
@@ -98,7 +98,7 @@
 extern void nfs_init(void);
 #endif
 
-char	copyright[] =
+const char	copyright[] =
 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n"
 "\tThe Regents of the University of California.  All rights reserved.\n"
 "Copyright (c) 1995-2002 OpenBSD. All rights reserved.  http://www.OpenBSD.org\n";
diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c
index b0cabd1e641..99b50f6d300 100644
--- a/sys/kern/kern_sysctl.c
+++ b/sys/kern/kern_sysctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_sysctl.c,v 1.63 2002/03/14 19:42:54 mickey Exp $	*/
+/*	$OpenBSD: kern_sysctl.c,v 1.64 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: kern_sysctl.c,v 1.17 1996/05/20 17:49:05 mrg Exp $	*/
 
 /*-
@@ -241,7 +241,6 @@ kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
 	struct proc *p;
 {
 	int error, level, inthostid, oldsgap;
-	extern char ostype[], osrelease[], osversion[];
 	extern int somaxconn, sominconn;
 	extern int usermount, nosuidcoredump;
 	extern long cp_time[CPUSTATES];
diff --git a/sys/miscfs/kernfs/kernfs_vnops.c b/sys/miscfs/kernfs/kernfs_vnops.c
index ff757a8212b..6531b343ff8 100644
--- a/sys/miscfs/kernfs/kernfs_vnops.c
+++ b/sys/miscfs/kernfs/kernfs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kernfs_vnops.c,v 1.26 2002/03/14 01:27:08 millert Exp $	*/
+/*	$OpenBSD: kernfs_vnops.c,v 1.27 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: kernfs_vnops.c,v 1.43 1996/03/16 23:52:47 christos Exp $	*/
 
 /*
@@ -74,7 +74,6 @@ static int	posix = _POSIX_VERSION;
 static int	osrev = OpenBSD;
 static int	ncpu = 1;	/* XXX */
 extern char machine[], cpu_model[];
-extern char ostype[], osrelease[];
 
 #ifdef IPSEC
 extern int ipsp_kern(int, char **, int);
@@ -88,7 +87,7 @@ struct kern_target kern_targets[] = {
      { DT_DIR, N(".."),        0,            KTT_NULL,     VDIR, DIR_MODE   },
      { DT_REG, N("boottime"),  &boottime.tv_sec, KTT_INT,  VREG, READ_MODE  },
      { DT_REG, N("byteorder"), &byteorder,   KTT_INT,      VREG, READ_MODE  },
-     { DT_REG, N("copyright"), copyright,    KTT_STRING,   VREG, READ_MODE  },
+     { DT_REG, N("copyright"), (void*)copyright,KTT_STRING,   VREG, READ_MODE  },
      { DT_REG, N("hostname"),  0,            KTT_HOSTNAME, VREG, WRITE_MODE },
      { DT_REG, N("domainname"),0,            KTT_DOMAIN,   VREG, WRITE_MODE },
      { DT_REG, N("hz"),        &hz,          KTT_INT,      VREG, READ_MODE  },
@@ -97,9 +96,9 @@ struct kern_target kern_targets[] = {
      { DT_REG, N("model"),     cpu_model,    KTT_STRING,   VREG, READ_MODE  },
      { DT_REG, N("msgbuf"),    0,	     KTT_MSGBUF,   VREG, READ_MODE  },
      { DT_REG, N("ncpu"),      &ncpu,        KTT_INT,      VREG, READ_MODE  },
-     { DT_REG, N("ostype"),    &ostype,      KTT_STRING,   VREG, READ_MODE  },
-     { DT_REG, N("osrelease"), &osrelease,   KTT_STRING,   VREG, READ_MODE  },
-     { DT_REG, N("osrev"),     &osrev,       KTT_INT,      VREG, READ_MODE  },
+     { DT_REG, N("ostype"),    (void*)&ostype,KTT_STRING,   VREG, READ_MODE  },
+     { DT_REG, N("osrelease"), (void*)&osrelease,KTT_STRING,VREG, READ_MODE  },
+     { DT_REG, N("osrev"),     &osrev,	     KTT_INT,      VREG, READ_MODE  },
      { DT_REG, N("pagesize"),  &uvmexp.pagesize, KTT_INT,  VREG, READ_MODE  },
      { DT_REG, N("physmem"),   &physmem,     KTT_PHYSMEM,  VREG, READ_MODE  },
      { DT_REG, N("posix"),     &posix,       KTT_INT,      VREG, READ_MODE  },
@@ -110,7 +109,7 @@ struct kern_target kern_targets[] = {
      { DT_CHR, N("rrootdev"),  &rrootdev,    KTT_DEVICE,   VCHR, READ_MODE  },
      { DT_REG, N("time"),      0,            KTT_TIME,     VREG, READ_MODE  },
      { DT_REG, N("usermem"),   0,            KTT_USERMEM,  VREG, READ_MODE  },
-     { DT_REG, N("version"),   version,      KTT_STRING,   VREG, READ_MODE  },
+     { DT_REG, N("version"),   (void*)version,KTT_STRING,  VREG, READ_MODE  },
 #ifdef IPSEC
      { DT_REG, N("ipsec"),     0,            KTT_IPSECSPI, VREG, READ_MODE  },
 #endif
diff --git a/sys/sys/systm.h b/sys/sys/systm.h
index 07f322d0882..b78d46a638f 100644
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: systm.h,v 1.48 2002/03/14 03:16:12 millert Exp $	*/
+/*	$OpenBSD: systm.h,v 1.49 2002/03/14 20:31:31 mickey Exp $	*/
 /*	$NetBSD: systm.h,v 1.50 1996/06/09 04:55:09 briggs Exp $	*/
 
 /*-
@@ -76,8 +76,11 @@
  */
 extern int securelevel;		/* system security level */
 extern const char *panicstr;	/* panic message */
-extern char version[];		/* system version */
-extern char copyright[];	/* system copyright */
+extern const char version[];		/* system version */
+extern const char copyright[];	/* system copyright */
+extern const char ostype[];
+extern const char osversion[];
+extern const char osrelease[];
 extern int cold;		/* cold start flag initialized in locore */
 
 extern int nblkdev;		/* number of entries in bdevsw */