--- Libc/Libc-1534.40.2/stdio/FreeBSD/makebuf.c
+++ /dev/null
@@ -1,241 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * 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. 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[] = "@(#)makebuf.c	8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "un-namespace.h"
-
-#include "libc_private.h"
-#include "local.h"
-#include <xlocale/_stdio.h>
-#include <xlocale/_stdlib.h>
-#include <os/once_private.h>
-
-#ifdef FEATURE_SMALL_STDIOBUF
-# define MAXBUFSIZE	(1 << 12)
-#else
-# define MAXBUFSIZE	(1 << 16)
-#endif
-
-#define TTYBUFSIZE	4096
-#define MAXEVPSIZE 16
-
-static char __fallback_evp[MAXEVPSIZE];
-static char __stdout_evp[MAXEVPSIZE];
-
-static void
-__loadevp(const char* key, char destination[MAXEVPSIZE])
-{
-	char* evp = getenv(key);
-	if (evp != NULL) {
-		strlcpy(destination, evp, MAXEVPSIZE);
-	} else {
-		destination[0] = '\0';
-	}
-}
-
-static void
-__evpinit(void* __unused unused)
-{
-	__loadevp("STDBUF", __fallback_evp);
-	__loadevp("STDBUF1", __stdout_evp);
-}
-
-static char*
-__getevp(int fd)
-{
-	static os_once_t predicate;
-	os_once(&predicate, NULL, __evpinit);
-
-	if (fd == STDOUT_FILENO && __stdout_evp[0] != '\0') {
-		return __stdout_evp;
-	} else if (__fallback_evp[0] != '\0') {
-		return __fallback_evp;
-	} else {
-		return NULL;
-	}
-
-}
-
-/*
- * Internal routine to determine environment override buffering for a file.
- *
- * Sections of the below taken from NetBSD's version of this file under the same license.
- */
-static int
-__senvbuf(FILE *fp, size_t *bufsize, int *couldbetty)
-{
-	char* evp;
-	char* end;
-	int flags;
-	long size;
-
-	flags = 0; // Default to fully buffered
-
-	if ((evp = __getevp(fp->_file)) == NULL) {
-		return flags;
-	}
-
-	// Look at the first character only to determine buffering mode
-	switch (*evp) {
-		case 'u':
-		case 'U':
-			flags |= __SNBF;
-			break;
-		case 'l':
-		case 'L':
-			flags |= __SLBF;
-			break;
-		case 'f':
-		case 'F':
-			// Default flags is fully buffered
-			break;
-		default:
-			// Unexpected buffering mode, use default fully buffered
-			return flags;
-	}
-	// User specified envrionment defaults have higher priority than tty defaults
-	*couldbetty = 0;
-
-	// Advance the envrionment variable pointer, so we can attempt to parse the number
-	evp++;
-	if (!isdigit(*evp)) {
-		return flags; // No number found, this protects us from negative size values
-	}
-
-	size = strtol_l(evp, &end, 10, LC_C_LOCALE);
-	if (*end != '\0') {
-		return flags;
-	}
-
-	if (size <= 0) {
-		return __SNBF; // Override with unbuffered if the buffer size is 0
-	}
-
-	// We had a non zero buffer, cap it and return the flags;
-	*bufsize = size > MAXBUFSIZE ? MAXBUFSIZE : size;
-	return flags;
-}
-
-/*
- * 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;
-
-	if (fp->_flags & __SNBF) {
-		fp->_bf._base = fp->_p = fp->_nbuf;
-		fp->_bf._size = 1;
-		return;
-	}
-	flags = __swhatbuf(fp, &size, &couldbetty);
-	if (fp->_file >= 0) {
-		flags |= __senvbuf(fp, &size, &couldbetty);
-
-		if (flags & __SNBF) {
-			fp->_flags |= __SNBF;
-			fp->_bf._base = fp->_p = fp->_nbuf;
-			fp->_bf._size = 1;
-			return;
-		}
-	}
-
-	if (couldbetty && isatty(fp->_file)) {
-		flags |= __SLBF;
-		/* st_blksize for ttys is 128K, so make it more reasonable */
-		if (size > TTYBUFSIZE)
-			fp->_blksize = size = TTYBUFSIZE;
-	}
-	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;
-	fp->_flags |= flags;
-}
-
-/*
- * Internal routine to determine `proper' buffering for a file.
- */
-int
-__swhatbuf(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.
-	 */
-	fp->_blksize = *bufsize = st.st_blksize > MAXBUFSIZE ? MAXBUFSIZE : st.st_blksize;
-	return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ?
-	    __SOPT : __SNPT);
-}