Libc-825.24.tar.gz

[apple/libc.git] / stdio / fflush-fbsd.c

diff --git a/stdio/fflush-fbsd.c b/stdio/fflush-fbsd.c
deleted file mode 100644 (file)
index 7c83b75..0000000
--- a/stdio/fflush-fbsd.c
+++ /dev/null
@@ -1,150 +0,0 @@
-/*-
- * Copyright (c) 1990, 1993
- *     The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)fflush.c   8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/fflush.c,v 1.14 2007/01/09 00:28:06 imp Exp $");
-
-#include "namespace.h"
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include "un-namespace.h"
-#include "libc_private.h"
-#include "local.h"
-
-static int     sflush_locked(FILE *);
-
-/*
- * Flush a single file, or (if fp is NULL) all files.
- * MT-safe version
- */
-int
-fflush(FILE *fp)
-{
-       int retval;
-
-       if (fp == NULL)
-               return (_fwalk(sflush_locked));
-       FLOCKFILE(fp);
-
-       /*
-        * There is disagreement about the correct behaviour of fflush()
-        * when passed a file which is not open for reading.  According to
-        * the ISO C standard, the behaviour is undefined.
-        * Under linux, such an fflush returns success and has no effect;
-        * under Windows, such an fflush is documented as behaving instead
-        * as fpurge().
-        * Given that applications may be written with the expectation of
-        * either of these two behaviours, the only safe (non-astonishing)
-        * option is to return EBADF and ask that applications be fixed.
-        */
-       if ((fp->_flags & (__SWR | __SRW)) == 0) {
-               errno = EBADF;
-               retval = EOF;
-       } else
-               retval = __sflush(fp);
-       FUNLOCKFILE(fp);
-       return (retval);
-}
-
-/*
- * Flush a single file, or (if fp is NULL) all files.
- * Non-MT-safe version
- */
-int
-__fflush(FILE *fp)
-{
-       int retval;
-
-       if (fp == NULL)
-               return (_fwalk(sflush_locked));
-       if ((fp->_flags & (__SWR | __SRW)) == 0) {
-               errno = EBADF;
-               retval = EOF;
-       } else
-               retval = __sflush(fp);
-       return (retval);
-}
-
-int
-__sflush(FILE *fp)
-{
-       unsigned char *p;
-       int n, t;
-
-       t = fp->_flags;
-       if ((t & __SWR) == 0)
-               return (0);
-
-       if ((p = fp->_bf._base) == NULL)
-               return (0);
-
-       n = fp->_p - p;         /* write this much */
-
-       /*
-        * Set these immediately to avoid problems with longjmp and to allow
-        * exchange buffering (via setvbuf) in user write function.
-        */
-       fp->_p = p;
-       fp->_w = t & (__SLBF|__SNBF) ? 0 : fp->_bf._size;
-
-       for (; n > 0; n -= t, p += t) {
-               t = _swrite(fp, (char *)p, n);
-               if (t <= 0) {
-                       /* 5340694: reset _p and _w on EAGAIN */
-                       if (t < 0 && errno == EAGAIN) {
-                               if (p > fp->_p) /* some was written */
-                                       memmove(fp->_p, p, n);
-                               fp->_p += n;
-                               if (!(fp->_flags & (__SLBF|__SNBF)))
-                                       fp->_w -= n;
-                       }
-                       fp->_flags |= __SERR;
-                       return (EOF);
-               }
-       }
-       return (0);
-}
-
-static int
-sflush_locked(FILE *fp)
-{
-       int     ret;
-
-       FLOCKFILE(fp);
-       ret = __sflush(fp);
-       FUNLOCKFILE(fp);
-       return (ret);
-}