fgetws implementation.

[kopensolaris-gnu/glibc.git] / stdio / fflush.c

diff --git a/stdio/fflush.c b/stdio/fflush.c
index ea195a9..e635f51 100644 (file)
--- a/stdio/fflush.c
+++ b/stdio/fflush.c
@@ -1,22 +1,21 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 1996, 1998 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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
-Library General Public License for more details.
+   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
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
-#include <ansidecl.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -24,43 +23,25 @@ Cambridge, MA 02139, USA.  */
 /* Flush STREAM's buffer.
    If STREAM is NULL, flush the buffers of all streams that are writing.  */
 int
-DEFUN(fflush, (stream), register FILE *stream)
+fflush (stream)
+     register FILE *stream;
 {
   if (stream == NULL)
     {
       int lossage = 0;
       for (stream = __stdio_head; stream != NULL; stream = stream->__next)
-       if (__validfp(stream) && stream->__mode.__write)
-         lossage |= fflush(stream) == EOF;
+       if (__validfp (stream) && stream->__mode.__write)
+         lossage |= fflush (stream) == EOF;
       return lossage ? EOF : 0;
     }
 
-  if (!__validfp(stream))
+  if (!__validfp (stream) || !stream->__mode.__write)
     {
-      errno = EINVAL;
+      __set_errno (EINVAL);
       return EOF;
     }
 
-  if (stream->__mode.__write && __flshfp(stream, EOF) == EOF)
-    return EOF;
-
-  /* Kill any pushed-back input.  */
-  stream->__pushback_bufp = NULL;
-
-  if (stream->__get_limit > stream->__buffer)
-    {
-      /* Kill buffered input.  */
-
-      if (stream->__buffer == NULL)
-       /* Nothing there.  */
-       return 0;
-
-      /* Reset bufp and the get limit so __fillbf
-        will be called on the next getc.
-        The target position is still where the beginning of the buffer
-        maps to.  Since get_limit - buffer == 0, fillbuf won't move it.  */
-      stream->__bufp = stream->__get_limit = stream->__buffer;
-    }
-
-  return 0;
+  return __flshfp (stream, EOF);
 }
+
+weak_alias(fflush, fflush_unlocked)