1 files changed, 36 insertions, 0 deletions
diff --git a/sys/libc/cfmapfn.c b/sys/libc/cfmapfn.c
new file mode 100644
index 00000000..0d4181a0
--- /dev/null
+++ b/sys/libc/cfmapfn.c
@@ -0,0 +1,36 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define import_spp
+#define	import_libc
+#define	import_xnames
+#include <iraf.h>
+
+
+/* C_FMAPFN -- Map a VFN (virtual filename) into an OSFN (host system filename).
+*/
+int
+c_fmapfn (
+  char	*vfn,			/* virtual filename		*/
+  char	*osfn,			/* OS filename			*/
+  int	maxch
+)
+{
+	XCHAR	x_osfn[SZ_PATHNAME+1];
+	XINT	sz_path = SZ_PATHNAME;
+
+
+	/* The OSFN is returned as a packed string in the XCHAR array x_osfn.
+	 * An intermediate buffer is used to avoid char->xchar alignment
+	 * problems of upward pointer coercion on some machines.
+	 */
+	if (maxch)
+	    iferr (FMAPFN (c_sppstr(vfn), x_osfn, &sz_path))
+		osfn[0] = EOS;
+	    else {
+		(void) strncpy (osfn, (char *)x_osfn, maxch);
+		osfn[maxch-1] = EOS;
+	    }
+	
+	return (strlen (osfn));
+}