X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fshutdown.c;h=1c302a24f3e5575c22e51a3c8a08c8aec8fe8368;hb=2408f02086a20c0a02241cd4a1cf11f126a95fe3;hp=26c49323aed7bad81f4b037975f87d0d7fdc91e1;hpb=d60f3b0c6b0f93a601acd1cfd3923f94ca05abb0;p=gnulib.git

diff --git a/lib/shutdown.c b/lib/shutdown.c
index 26c49323a..1c302a24f 100644
--- a/lib/shutdown.c
+++ b/lib/shutdown.c
@@ -32,9 +32,18 @@ int
 rpl_shutdown (int fd, int how)
 {
   SOCKET sock = FD_TO_SOCKET (fd);
-  int r = shutdown (sock, how);
-  if (r < 0)
-    set_winsock_errno ();
 
-  return r;
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = shutdown (sock, how);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
 }