1 files changed, 62 insertions, 0 deletions
diff --git a/sys/imio/iki/ikicopy.x b/sys/imio/iki/ikicopy.x
new file mode 100644
index 00000000..31df1970
--- /dev/null
+++ b/sys/imio/iki/ikicopy.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	"iki.h"
+
+# IKI_COPY -- Fast copy of an entire image or group of images.  This function
+# is provided at the IKI level since the kernel has explicit knowledge of the
+# storage format and hence may be able to copy the image by means much simpler
+# and faster way than those available to the high level software.
+
+procedure iki_copy (old, new)
+
+char	old[ARB]		#I name of old image
+char	new[ARB]		#I name of new image
+
+int	k, n, status
+pointer	sp, old_root, old_extn, new_root, new_extn
+int	iki_access()
+bool	streq()
+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], READ_ONLY)
+	if (k < 0)
+	    call syserrs (SYS_IKIAMBIG, old)
+	else if (k == 0)
+	    call syserrs (SYS_IKIIMNF, old)
+
+	# Make sure we will not be clobbering an existing image.  Ignore
+	# attempts to rename an image onto itself.
+
+	n = iki_access (new, Memc[new_root], Memc[new_extn], 0)
+	if (n > 0) {
+	    if (streq (Memc[old_root], Memc[new_root]))
+		if (streq (Memc[old_extn], Memc[new_extn])) {
+		    call sfree (sp)
+		    return
+		}
+	    call syserrs (SYS_IKICLOB, new)
+	} else {
+	    # New name is new root plus legal extn for old image.
+	    call iki_parse (new, Memc[new_root], Memc[new_extn])
+	    call strcpy (Memc[old_extn], Memc[new_extn], MAX_LENEXTN)
+	}
+
+	# Copy the image.
+	call zcall6 (IKI_COPY(k), k, Memc[old_root], Memc[old_extn],
+	    Memc[new_root], Memc[new_extn], status)
+	if (status == ERR)
+	    call syserrs (SYS_IKICOPY, old)
+
+	call sfree (sp)
+end