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--- Libc/Libc-1725.40.4/stdio/FreeBSD/freopen.c
+++ /dev/null
@@ -1,250 +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[] = "@(#)freopen.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/freopen.c,v 1.21 2008/04/17 22:17:54 jhb Exp $");
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <limits.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "un-namespace.h"
-#include "libc_private.h"
-#include "local.h"
-#include "libc_hooks_impl.h"
-
-/*
- * Re-direct an existing, open (probably) file to some other file.
- * ANSI is written such that the original file gets closed if at
- * all possible, no matter what.
- */
-FILE *
-freopen(const char * __restrict file, const char * __restrict mode, FILE *fp)
-{
- int f;
- int dflags, flags, isopen, oflags, sverrno, wantfd;
-
- libc_hooks_will_read_cstring(file);
- libc_hooks_will_read_cstring(mode);
- libc_hooks_will_write(fp, sizeof(*fp));
-
- if ((flags = __sflags(mode, &oflags)) == 0) {
- sverrno = errno;
- (void) fclose(fp);
- errno = sverrno;
- return (NULL);
- }
-
- pthread_once(&__sdidinit, __sinit);
-
- FLOCKFILE(fp);
-
- /*
- * If the filename is a NULL pointer, the caller is asking us to
- * re-open the same file with a different mode. We allow this only
- * if the modes are compatible.
- */
- if (file == NULL) {
- /* See comment below regarding freopen() of closed files. */
- if (fp->_flags == 0) {
- FUNLOCKFILE(fp);
- errno = EINVAL;
- return (NULL);
- }
- if ((dflags = _fcntl(fp->_file, F_GETFL)) < 0) {
- sverrno = errno;
- fclose(fp);
- FUNLOCKFILE(fp);
- errno = sverrno;
- return (NULL);
- }
- if ((dflags & O_ACCMODE) != O_RDWR && (dflags & O_ACCMODE) !=
- (oflags & O_ACCMODE)) {
- fclose(fp);
- FUNLOCKFILE(fp);
- errno = EBADF;
- return (NULL);
- }
- if (fp->_flags & __SWR)
- (void) __sflush(fp);
- if ((oflags ^ dflags) & O_APPEND) {
- dflags &= ~O_APPEND;
- dflags |= oflags & O_APPEND;
- if (_fcntl(fp->_file, F_SETFL, dflags) < 0) {
- sverrno = errno;
- fclose(fp);
- FUNLOCKFILE(fp);
- errno = sverrno;
- return (NULL);
- }
- }
- if (oflags & O_TRUNC)
- (void) ftruncate(fp->_file, (off_t)0);
- if (!(oflags & O_APPEND))
- (void) _sseek(fp, (fpos_t)0, SEEK_SET);
- f = fp->_file;
- isopen = 0;
- wantfd = -1;
- goto finish;
- }
-
- /*
- * There are actually programs that depend on being able to "freopen"
- * descriptors that weren't originally open. Keep this from breaking.
- * Remember whether the stream was open to begin with, and which file
- * descriptor (if any) was associated with it. If it was attached to
- * a descriptor, defer closing it; freopen("/dev/stdin", "r", stdin)
- * should work. This is unnecessary if it was not a Unix file.
- *
- * For UNIX03, we always close if it was open.
- */
- if (fp->_flags == 0) {
- fp->_flags = __SEOF; /* hold on to it */
- isopen = 0;
- wantfd = -1;
- } else {
- /* flush the stream; ANSI doesn't require this. */
- if (fp->_flags & __SWR)
- (void) __sflush(fp);
- /* if close is NULL, closing is a no-op, hence pointless */
-#if __DARWIN_UNIX03
- if (fp->_close)
- (void) (*fp->_close)(fp->_cookie);
- isopen = 0;
- wantfd = -1;
-#else /* !__DARWIN_UNIX03 */
- isopen = fp->_close != NULL;
- if ((wantfd = fp->_file) < 0 && isopen) {
- (void) (*fp->_close)(fp->_cookie);
- isopen = 0;
- }
-#endif /* __DARWIN_UNIX03 */
- }
-
- /* Get a new descriptor to refer to the new file. */
- f = _open(file, oflags, DEFFILEMODE);
- if (f < 0 && isopen) {
- /* If out of fd's close the old one and try again. */
- if (errno == ENFILE || errno == EMFILE) {
- (void) (*fp->_close)(fp->_cookie);
- isopen = 0;
- f = _open(file, oflags, DEFFILEMODE);
- }
- }
- sverrno = errno;
-
-finish:
- /*
- * Finish closing fp. Even if the open succeeded above, we cannot
- * keep fp->_base: it may be the wrong size. This loses the effect
- * of any setbuffer calls, but stdio has always done this before.
- */
- if (isopen)
- (void) (*fp->_close)(fp->_cookie);
- if (fp->_flags & __SMBF)
- free((char *)fp->_bf._base);
- fp->_w = 0;
- fp->_r = 0;
- fp->_p = NULL;
- fp->_bf._base = NULL;
- fp->_bf._size = 0;
- fp->_lbfsize = 0;
- if (HASUB(fp))
- FREEUB(fp);
- fp->_ub._size = 0;
- if (HASLB(fp))
- FREELB(fp);
- fp->_lb._size = 0;
- fp->_orientation = 0;
- memset(&fp->_mbstate, 0, sizeof(mbstate_t));
-
- if (f < 0) { /* did not get it after all */
- FUNLOCKFILE(fp);
- __sfprelease(fp); /* set it free */
- errno = sverrno; /* restore in case _close clobbered */
- return (NULL);
- }
-
- /*
- * If reopening something that was open before on a real file, try
- * to maintain the descriptor. Various C library routines (perror)
- * assume stderr is always fd STDERR_FILENO, even if being freopen'd.
- */
- if (wantfd >= 0 && f != wantfd) {
- if (_dup2(f, wantfd) >= 0) {
- (void)_close(f);
- f = wantfd;
- }
- }
-
- /*
- * File descriptors are a full int, but _file is only a short.
- * If we get a valid file descriptor that is greater than
- * SHRT_MAX, then the fd will get sign-extended into an
- * invalid file descriptor. Handle this case by failing the
- * open.
- */
- if (f > SHRT_MAX) {
- FUNLOCKFILE(fp);
- __sfprelease(fp); /* set it free */
- errno = EMFILE;
- return (NULL);
- }
-
- fp->_flags = flags;
- fp->_file = f;
- fp->_cookie = fp;
- fp->_read = __sread;
- fp->_write = __swrite;
- fp->_seek = __sseek;
- fp->_close = __sclose;
- /*
- * When opening in append mode, even though we use O_APPEND,
- * we need to seek to the end so that ftell() gets the right
- * answer. If the user then alters the seek pointer, or
- * the file extends, this will fail, but there is not much
- * we can do about this. (We could set __SAPP and check in
- * fseek and ftell.)
- */
- if (oflags & O_APPEND)
- (void) _sseek(fp, (fpos_t)0, SEEK_END);
- FUNLOCKFILE(fp);
- return (fp);
-}