37 lines
955 B
C
37 lines
955 B
C
|
/* @(#)fdup.c 1.16 10/11/06 Copyright 1986, 1995-2010 J. Schilling */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1986, 1995-2010 J. Schilling
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
* The contents of this file are subject to the terms of the
|
||
|
|
* Common Development and Distribution License, Version 1.0 only
|
||
|
|
* (the "License"). You may not use this file except in compliance
|
||
|
|
* with the License.
|
||
|
|
*
|
||
|
|
* See the file CDDL.Schily.txt in this distribution for details.
|
||
|
|
*
|
||
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
||
|
|
* file and include the License file CDDL.Schily.txt from this distribution.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "schilyio.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Note that because of a definition in schilyio.h we are using
|
||
|
|
* fseeko()/ftello() instead of fseek()/ftell() if available.
|
||
|
|
*/
|
||
|
|
|
||
|
|
EXPORT FILE *
|
||
|
|
fdup(f)
|
||
|
|
register FILE *f;
|
||
|
|
{
|
||
|
|
int newfd;
|
||
|
|
|
||
|
|
down(f);
|
||
|
|
if ((newfd = dup(fileno(f))) < 0)
|
||
|
|
return ((FILE *)NULL);
|
||
|
|
|
||
|
|
lseek(newfd, ftell(f), SEEK_SET);
|
||
|
|
return (_fcons((FILE *)0, newfd, (FI_READ | FI_WRITE | FI_CLOSE)));
|
||
|
|
}
|