1 files changed, 51 insertions, 0 deletions
diff --git a/sys/imio/iki/oif/oifaccess.x b/sys/imio/iki/oif/oifaccess.x
new file mode 100644
index 00000000..e5dfe28a
--- /dev/null
+++ b/sys/imio/iki/oif/oifaccess.x
@@ -0,0 +1,51 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"oif.h"
+
+# OIF_ACCESS -- Test the accessibility or existence of an existing image, or
+# the legality of the name of a new image.
+
+procedure oif_access (kernel, root, extn, acmode, status)
+
+int	kernel			#I IKI kernel
+char	root[ARB]		#I root filename
+char	extn[ARB]		#U extension (SET on output if none specified)
+int	acmode			#I access mode (0 to test only existence)
+int	status			#O status
+
+pointer	sp, fname
+int	btoi(), access(), iki_validextn()
+string	oif_extn OIF_HDREXTN
+bool	strne()
+
+begin
+	call smark (sp)
+	call salloc (fname, SZ_PATHNAME, TY_CHAR)
+
+	# If new image, test only the legality of the given extension.
+	# This is used to select a kernel given the imagefile extension.
+
+	if (acmode == NEW_IMAGE || acmode == NEW_COPY) {
+	    status = btoi (iki_validextn (kernel, extn) > 0)
+	    call sfree (sp)
+	    return
+	}
+
+	# Reject image if an invalid extension is given.
+	if (extn[1] != EOS && strne (extn, oif_extn)) {
+	    status = NO
+	    call sfree (sp)
+	    return
+	}
+
+	# Check for the imagefile.
+	call iki_mkfname (root, oif_extn, Memc[fname], SZ_PATHNAME)
+	if (access (Memc[fname], acmode, 0) == YES) {
+	    if (extn[1] == EOS)
+		call strcpy (oif_extn, extn, MAX_LENEXTN)
+	    status = YES
+	} else
+	    status = NO
+
+	call sfree (sp)
+end