1 files changed, 44 insertions, 0 deletions
diff --git a/sys/imio/iki/plf/plfaccess.x b/sys/imio/iki/plf/plfaccess.x
new file mode 100644
index 00000000..bf4ed5a9
--- /dev/null
+++ b/sys/imio/iki/plf/plfaccess.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"plf.h"
+
+# PLF_ACCESS -- Test the accessibility or existence of an existing image,
+# or the legality of the name of a new image.
+
+procedure plf_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 ok or err
+
+pointer	sp, fname
+int	btoi(), access(), iki_validextn()
+string	plf_extn PLF_EXTN
+
+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.
+
+	status = NO
+	if (extn[1] != EOS)
+	    status = btoi (iki_validextn (kernel, extn) > 0)
+
+	if (acmode != NEW_IMAGE && acmode != NEW_COPY) {
+	    if (extn[1] == EOS) {
+		call iki_mkfname (root, plf_extn, Memc[fname], SZ_PATHNAME)
+		status = access (Memc[fname], acmode, 0)
+		if (status != NO)
+		    call strcpy (plf_extn, extn, MAX_LENEXTN)
+	    } else if (status != NO) {
+		call iki_mkfname (root, extn, Memc[fname], SZ_PATHNAME)
+		status = access (Memc[fname], acmode, 0)
+	    }
+	}
+
+	call sfree (sp)
+end