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--- Libc/Libc-1725.40.4/stdio/FreeBSD/makebuf.c
+++ /dev/null
@@ -1,275 +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 << 24)
-#endif
-
-#define TTYBUFSIZE 4096
-#define MAXEVPSIZE 16
-
-static char __fallback_evp[MAXEVPSIZE];
-static char __stdin_evp[MAXEVPSIZE];
-static char __stdout_evp[MAXEVPSIZE];
-static char __stderr_evp[MAXEVPSIZE];
-
-static void
-__loadevp(const char *key, char destination[MAXEVPSIZE])
-{
- char *evp = getenv(key);
- if (evp != NULL)
- strlcpy(destination, evp, MAXEVPSIZE);
-}
-
-static void
-__evpinit(void __unused *unused)
-{
- /* NetBSD style */
- __loadevp("STDBUF", __fallback_evp);
- __loadevp("STDBUF0", __stdin_evp);
- __loadevp("STDBUF1", __stdout_evp);
- __loadevp("STDBUF2", __stderr_evp);
- /* GNU / FreeBSD style */
- __loadevp("_STDBUF_I", __stdin_evp);
- __loadevp("_STDBUF_O", __stdout_evp);
- __loadevp("_STDBUF_E", __stderr_evp);
-}
-
-static char *
-__getevp(int fd)
-{
- static os_once_t predicate;
- os_once(&predicate, NULL, __evpinit);
-
- switch (fd) {
- case STDIN_FILENO:
- if (__stdin_evp[0] != '\0')
- return __stdin_evp;
- break;
- case STDOUT_FILENO:
- if (__stdout_evp[0] != '\0')
- return __stdout_evp;
- break;
- case STDERR_FILENO:
- if (__stderr_evp[0] != '\0')
- return __stderr_evp;
- break;
- }
- if (__fallback_evp[0] != '\0')
- return __fallback_evp;
- 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;
- int flags = 0; // default = fully buffered
- size_t size = 0;
-
- if ((evp = __getevp(fp->_file)) == NULL || *evp == '\0')
- return 0;
- /*
- * NetBSD style: [UuLlFf] followed by an optional size
- * GNU style: [0L] or a size
- * FreeBSD style: [0LB] or a size
- * Synthesis: optional [0UuLlFfB] followed by optional size.
- */
- switch (*evp) {
- case '0':
- case 'U':
- case 'u':
- evp++;
- flags = __SNBF;
- break;
- case 'L':
- case 'l':
- evp++;
- flags = __SLBF;
- break;
- case 'F':
- case 'f':
- case 'B':
- evp++;
- break;
- }
- if (flags == __SNBF && *evp != '\0')
- return 0;
- for (; isdigit((unsigned char)*evp); evp++)
- size = size * 10 + *evp - '0';
- /*
- * GNU accepts suffixes up to Z and has different notations for
- * binary and decimal. FreeBSD accepts suffixes up to G. We'll
- * settle for [Kk] and M and not bother with the distinction
- * between binary and decimal.
- */
- switch (*evp) {
- case 'M':
- evp++;
- size *= 1024 * 1024;
- break;
- case 'K':
- case 'k':
- evp++;
- size *= 1024;
- break;
- case 'B':
- case '\0':
- break;
- default:
- return 0;
- }
- if (*evp == 'B')
- evp++;
- if (*evp != '\0')
- return 0;
- *couldbetty = 0;
- *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 (size == 0)
- size = BUFSIZ;
- }
-
- 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;
- }
-#ifdef __APPLE__
- __cleanup = 1;
-#else
- __cleanup = _cleanup;
-#endif // __APPLE__
- 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);
-}