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diff --git a/sys/imio/iki/ikirename.x b/sys/imio/iki/ikirename.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	"iki.h"
+
+# IKI_RENAME -- Rename an entire image or group of images.
+
+procedure iki_rename (old, new)
+
+char	old[ARB]		#I old name of image
+char	new[ARB]		#I new name of image
+
+int	k, n, status
+pointer	new_root, new_extn
+pointer	sp, old_root, old_extn
+
+bool	streq()
+int	iki_access()
+errchk	syserrs
+include	"iki.com"
+
+begin
+	call smark (sp)
+	call salloc (old_root, SZ_PATHNAME, TY_CHAR)
+	call salloc (old_extn, MAX_LENEXTN, TY_CHAR)
+	call salloc (new_root, SZ_PATHNAME, TY_CHAR)
+	call salloc (new_extn, MAX_LENEXTN, TY_CHAR)
+
+	# Verify that the old image exists and determine its type.
+	k = iki_access (old, Memc[old_root], Memc[old_extn], 0)
+	if (k < 0)
+	    call syserrs (SYS_IKIAMBIG, old)
+	else if (k == 0)
+	    call syserrs (SYS_IKIIMNF, old)
+
+	# Determine if the old image exists.  New name is new root plus
+	# legal extn for old image.
+
+	n = iki_access (new, Memc[new_root], Memc[new_extn], 0)
+	if (n <= 0)
+	    call iki_parse (new, Memc[new_root], Memc[new_extn])
+
+	# If an extension was given for the new image, verify that it is a
+	# valid extension for an image of the same type as the old image.
+	# We cannot change the image type in a rename operation.
+
+	if (Memc[new_extn] != EOS) {
+	    call zcall5 (IKI_ACCESS(k), k, Memc[new_root], Memc[new_extn],
+		NEW_FILE, status)
+	    if (status == NO)
+		call strcpy (Memc[old_extn], Memc[new_extn], MAX_LENEXTN)
+	} else
+	    call strcpy (Memc[old_extn], Memc[new_extn], MAX_LENEXTN)
+
+	# Make sure we will not be clobbering an existing image.  Renaming
+	# an image onto itself is ok; what it means to do this is up to
+	# the specific image kernel.
+
+	if (n > 0) {
+	    if (streq (Memc[old_root], Memc[new_root]) &&
+		streq (Memc[old_extn], Memc[new_extn]))
+		; # rename x -> x; let kernel decide what to do
+	    else
+		call syserrs (SYS_IKICLOB, new)
+	}
+
+	# Rename the image.
+	call zcall6 (IKI_RENAME(k), k, Memc[old_root], Memc[old_extn],
+	    Memc[new_root], Memc[new_extn], status)
+	if (status == ERR)
+	    call syserrs (SYS_IKIRENAME, old)
+	
+	call sfree (sp)
+end