-/* Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
- This file is part of the GNU IO Library.
+/* Copyright (C) 1993-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C 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.
+ 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.
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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
- General Public License for more details.
+ Lesser 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.
+ 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 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. */
+ 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
-#ifdef weak_alias
/* 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)
-#endif
-#endif
+weak_alias (__fileno, fileno_unlocked)