hurd: Fix build

[thirdparty/glibc.git] / libio / fileno.c

diff --git a/libio/fileno.c b/libio/fileno.c
index 08e657b9709766fd04fb455991652130329a5977..343bdcde50d8cd603bc944fa64d145c3accf5dd0 100644 (file)
--- a/libio/fileno.c
+++ b/libio/fileno.c
@@ -1,47 +1,51 @@
-/*
-Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
-
-This file is part of the GNU IO Library.  This library is free
-software; you can redistribute it and/or modify it under the
-terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this library; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-
-As a special exception, if you link this library with files
-compiled with a GNU compiler to produce an executable, this does not cause
-the resulting executable to be covered by the GNU General Public License.
-This exception does not however invalidate any other reasons why
-the executable file might be covered by the GNU General Public License. */
+/* Copyright (C) 1993-2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.
+
+   As a special exception, if you link the code in this file with
+   files compiled with a GNU compiler to produce an executable,
+   that does not cause the resulting executable to be covered by
+   the GNU Lesser General Public License.  This exception does not
+   however invalidate any other reasons why the executable file
+   might be covered by the GNU Lesser General Public License.
+   This exception applies to code released by its copyright holders
+   in files containing the exception.  */
 
 #include "libioP.h"
-#include "stdio.h"
+#include <stdio.h>
 
 int
-fileno (fp)
-     _IO_FILE* fp;
+__fileno (FILE *fp)
 {
   CHECK_FILE (fp, EOF);
 
-  if (!(fp->_flags & _IO_IS_FILEBUF))
-    return EOF;
+  if (!(fp->_flags & _IO_IS_FILEBUF) || _IO_fileno (fp) < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
 
   return _IO_fileno (fp);
 }
+libc_hidden_def (__fileno)
+weak_alias (__fileno, fileno)
+libc_hidden_weak (fileno)
 
-#ifdef _IO_MTSAFE_IO
 /* The fileno implementation for libio does not require locking because
    it only accesses once a single variable and this is already atomic
-   (at least at thread level).  */
+   (at least at thread level).  Therefore we don't test _IO_MTSAFE_IO here.  */
 
-weak_alias (fileno, fileno_unlocked)
-weak_alias (fileno, fileno_locked)
-#endif
+weak_alias (__fileno, fileno_unlocked)