1 files changed, 58 insertions, 0 deletions
diff --git a/sys/imio/iki/stf/stfaccess.x b/sys/imio/iki/stf/stfaccess.x
new file mode 100644
index 00000000..40907c69
--- /dev/null
+++ b/sys/imio/iki/stf/stfaccess.x
@@ -0,0 +1,58 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"stf.h"
+
+# STF_ACCESS -- Test the accessibility or existence of an existing image, or
+# the legality of the name of a new image.
+
+procedure stf_access (kernel, root, extn, acmode, status)
+
+int	kernel			#I IKI kernel
+char	root[ARB]		#I root filename
+char	extn[ARB]		#I extension (SET on output if none specified)
+int	acmode			#I access mode (0 to test only existence)
+int	status			#O return value
+
+int	i
+pointer	sp, fname, kextn
+int	access(), iki_validextn(), iki_getextn(), btoi()
+
+begin
+	call smark (sp)
+	call salloc (fname, SZ_PATHNAME, TY_CHAR)
+	call salloc (kextn, MAX_LENEXTN, 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
+	}
+
+	status = NO
+
+	# If no extension was given, look for a file with the default
+	# extension, and return the actual extension if an image with the
+	# default extension is found.
+
+	if (extn[1] == EOS) {
+	    do i = 1, ARB {
+		if (iki_getextn (kernel, i, Memc[kextn], MAX_LENEXTN) <= 0)
+		    break
+		call iki_mkfname (root, Memc[kextn], Memc[fname], SZ_PATHNAME)
+		if (access (Memc[fname], acmode, 0) == YES) {
+		    call strcpy (Memc[kextn], extn, MAX_LENEXTN)
+		    status = YES
+		    break
+		}
+	    }		
+	} else if (iki_validextn (kernel, extn) == kernel) {
+	    call iki_mkfname (root, extn, Memc[fname], SZ_PATHNAME)
+	    if (access (Memc[fname], acmode, 0) == YES)
+		status = YES
+	}
+
+	call sfree (sp)
+end