GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdio/fopen.c Lines: 0 23 0.0 %
Date: 2017-11-13 Branches: 0 10 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: fopen.c,v 1.9 2016/09/21 04:38:56 guenther Exp $ */
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/*-
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Chris Torek.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include "local.h"
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FILE *
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fopen(const char *file, const char *mode)
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{
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	FILE *fp;
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	int f;
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	int flags, oflags;
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	if ((flags = __sflags(mode, &oflags)) == 0)
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		return (NULL);
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	if ((fp = __sfp()) == NULL)
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		return (NULL);
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	if ((f = open(file, oflags, DEFFILEMODE)) < 0) {
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		fp->_flags = 0;			/* release */
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		return (NULL);
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	}
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	/* _file is only a short */
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	if (f > SHRT_MAX) {
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		fp->_flags = 0;			/* release */
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		close(f);
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		errno = EMFILE;
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		return (NULL);
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	}
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	fp->_file = f;
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	fp->_flags = flags;
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	fp->_cookie = fp;
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	fp->_read = __sread;
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	fp->_write = __swrite;
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	fp->_seek = __sseek;
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	fp->_close = __sclose;
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	/*
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	 * When opening in append mode, even though we use O_APPEND,
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	 * we need to seek to the end so that ftell() gets the right
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	 * answer.  If the user then alters the seek pointer, or
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	 * the file extends, this will fail, but there is not much
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	 * we can do about this.  (We could set __SAPP and check in
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	 * fseek and ftell.)
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	 */
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	if (oflags & O_APPEND)
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		(void) __sseek(fp, 0, SEEK_END);
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	return (fp);
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}
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DEF_STRONG(fopen);