diff --git a/lib/isc/include/isc/file.h b/lib/isc/include/isc/file.h
index 526a0bedcc..ab092ff125 100644
--- a/lib/isc/include/isc/file.h
+++ b/lib/isc/include/isc/file.h
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: file.h,v 1.15 2001/03/29 02:33:47 bwelling Exp $ */
+/* $Id: file.h,v 1.16 2001/05/03 18:59:28 bwelling Exp $ */
 
 #ifndef ISC_FILE_H
 #define ISC_FILE_H 1
@@ -177,6 +177,12 @@ isc_file_iscurrentdir(const char *filename);
  * Return ISC_TRUE iff the given file name is the current directory (".").
  */
 
+char *
+isc_file_basename(const char *filename);
+/*
+ * Return the final component of the path in the file name.
+ */
+
 isc_result_t
 isc_file_template(const char *path, const char *templet, char *buf,
 		  size_t buflen);
diff --git a/lib/isc/unix/file.c b/lib/isc/unix/file.c
index 5d7a1442ce..ab0249d9c1 100644
--- a/lib/isc/unix/file.c
+++ b/lib/isc/unix/file.c
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: file.c,v 1.30 2001/04/12 19:46:39 tale Exp $ */
+/* $Id: file.c,v 1.31 2001/05/03 18:59:30 bwelling Exp $ */
 
 #include <config.h>
 
@@ -234,3 +234,13 @@ isc_boolean_t
 isc_file_iscurrentdir(const char *filename) {
 	return (ISC_TF(filename[0] == '.' && filename[1] == '\0'));
 }
+
+char *
+isc_file_basename(const char *filename) {
+	char *s;
+
+	s = strrchr(filename, '/');
+	if (s == NULL)
+		return (filename);
+	return (s + 1);
+}