a910abcd19
Change-Id: Ic51e58a7c75d20bf770dc0ebd7f97a338fbe0036 Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
/* $OpenBSD: fopen.c,v 1.5 2005/08/08 08:05:36 espie Exp $ */
|
|
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include "local.h"
|
|
#include <linux/stat.h>
|
|
|
|
FILE *
|
|
fopen(const char *file, const char *mode)
|
|
{
|
|
FILE *fp;
|
|
int f;
|
|
int flags, oflags;
|
|
|
|
if ((flags = __sflags(mode, &oflags)) == 0)
|
|
return (NULL);
|
|
if ((fp = __sfp()) == NULL)
|
|
return (NULL);
|
|
if ((f = open(file, oflags, DEFFILEMODE)) < 0) {
|
|
fp->_flags = 0; /* release */
|
|
return (NULL);
|
|
}
|
|
fp->_file = f;
|
|
fp->_flags = flags;
|
|
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((void *)fp, (fpos_t)0, SEEK_END);
|
|
return (fp);
|
|
}
|