Libc-320.tar.gz

[apple/libc.git] / stdio / makebuf.c

diff --git a/stdio/makebuf.c b/stdio/makebuf.c
deleted file mode 100644 (file)
index c846fa3..0000000
--- a/stdio/makebuf.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *     This product includes software developed by the University of
- *     California, Berkeley and its contributors.
- * 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.
- */
-
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "local.h"
-
-/*
- * Allocate a file buffer, or switch to unbuffered I/O.
- * Per the ANSI C standard, ALL tty devices default to line buffered.
- *
- * As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
- * optimisation) right after the fstat() that finds the buffer size.
- */
-void
-__smakebuf(fp)
-       register FILE *fp;
-{
-       register void *p;
-       register int flags;
-       size_t size;
-       int couldbetty;
-
-       if (fp->_flags & __SNBF) {
-               fp->_bf._base = fp->_p = fp->_nbuf;
-               fp->_bf._size = 1;
-               return;
-       }
-       flags = __swhatbuf(fp, &size, &couldbetty);
-       if ((p = malloc(size)) == NULL) {
-               fp->_flags |= __SNBF;
-               fp->_bf._base = fp->_p = fp->_nbuf;
-               fp->_bf._size = 1;
-               return;
-       }
-       __cleanup = _cleanup;
-       flags |= __SMBF;
-       fp->_bf._base = fp->_p = p;
-       fp->_bf._size = size;
-       if (couldbetty && isatty(fp->_file))
-               flags |= __SLBF;
-       fp->_flags |= flags;
-}
-
-/*
- * Internal routine to determine `proper' buffering for a file.
- */
-int
-__swhatbuf(fp, bufsize, couldbetty)
-       register FILE *fp;
-       size_t *bufsize;
-       int *couldbetty;
-{
-       struct stat st;
-
-       if (fp->_file < 0 || fstat(fp->_file, &st) < 0) {
-               *couldbetty = 0;
-               *bufsize = BUFSIZ;
-               return (__SNPT);
-       }
-
-       /* could be a tty iff it is a character device */
-       *couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
-       if (st.st_blksize <= 0) {
-               *bufsize = BUFSIZ;
-               return (__SNPT);
-       }
-
-       /*
-        * Optimise fseek() only if it is a regular file.  (The test for
-        * __sseek is mainly paranoia.)  It is safe to set _blksize
-        * unconditionally; it will only be used if __SOPT is also set.
-        */
-       *bufsize = st.st_blksize;
-       fp->_blksize = st.st_blksize;
-       return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ?
-           __SOPT : __SNPT);
-}