X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=lib%2Fdirfd.c;h=81993c502c1f89c71304d7390c9df8240a86d782;hp=3458e99b203bc9764b745e71dd3e3dc9a9e845e5;hb=785cdec4450a1459fdbb90df1344b69be34e0059;hpb=cf7169a2ede9bb08b71de68fe0c8bbecf827abe6

diff --git a/lib/dirfd.c b/lib/dirfd.c
index 3458e99..81993c5 100644
--- a/lib/dirfd.c
+++ b/lib/dirfd.c
@@ -1,6 +1,6 @@
 /* dirfd.c -- return the file descriptor associated with an open DIR*
 
-   Copyright (C) 2001, 2006, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2006, 2008-2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -20,9 +20,13 @@
 #include <config.h>
 
 #include <dirent.h>
+#include <errno.h>
 
 int
 dirfd (DIR const *dir_p)
 {
-  return DIR_TO_FD (dir_p);
+  int fd = DIR_TO_FD (dir_p);
+  if (fd == -1)
+    errno = ENOTSUP;
+  return fd;
 }