diff options
Diffstat (limited to 'StdLib/LibC/Stdio/makebuf.c')
| -rw-r--r-- | StdLib/LibC/Stdio/makebuf.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/StdLib/LibC/Stdio/makebuf.c b/StdLib/LibC/Stdio/makebuf.c deleted file mode 100644 index 684f0eebc1..0000000000 --- a/StdLib/LibC/Stdio/makebuf.c +++ /dev/null @@ -1,138 +0,0 @@ -/** @file
- Implementation of internal file buffer allocation functions.
-
- Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials are licensed and made available
- under the terms and conditions of the BSD License that accompanies this
- distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- 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:
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- - 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.
- - 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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.
-
- NetBSD: makebuf.c,v 1.14 2003/08/07 16:43:28 agc Exp
- makebuf.c 8.1 (Berkeley) 6/4/93
-**/
-#include <LibConfig.h>
-
-#include "namespace.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "reentrant.h"
-#include "local.h"
-#include <MainData.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(FILE *fp)
-{
- void *p;
- int flags;
- size_t size;
- int couldbetty;
-
- _DIAGASSERT(fp != NULL);
-
- if (fp != NULL) {
- if (fp->_flags & __SNBF) {
- fp->_bf._base = fp->_p = fp->_nbuf;
- fp->_bf._size = MB_LEN_MAX;
- return;
- }
- flags = __swhatbuf(fp, &size, &couldbetty);
- if ((p = malloc(size)) == NULL) {
- // malloc failed, act unbuffered.
- fp->_flags |= __SNBF;
- fp->_bf._base = fp->_p = fp->_nbuf;
- fp->_bf._size = 1;
- return;
- }
- gMD->cleanup = _cleanup;
- flags |= __SMBF;
- fp->_bf._base = fp->_p = p;
- fp->_bf._size = (int)size;
- if (couldbetty || isatty(fp->_file))
- flags |= __SLBF;
- fp->_flags |= flags;
- }
-}
-
-/*
- * Internal routine to determine `proper' buffering for a file.
- */
-int
-__swhatbuf(FILE *fp, size_t *bufsize, int *couldbetty)
-{
- struct stat st;
-
- _DIAGASSERT(fp != NULL);
- _DIAGASSERT(bufsize != NULL);
- _DIAGASSERT(couldbetty != NULL);
- if(fp == NULL) {
- return (__SNPT);
- }
-
- 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 = S_ISCHR(st.st_mode);
- 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);
-}
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