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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
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Olaf Barthel
2004-07-26 16:36:55 +00:00
parent a9e8f137ad
commit 91bcdea2a2
669 changed files with 80825 additions and 0 deletions
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library/stdio_duplicate_fd.c
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/*
* $Id: stdio_duplicate_fd.c,v 1.1.1.1 2004-07-26 16:31:24 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
#ifndef _STDIO_HEADERS_H
#include "stdio_headers.h"
#endif /* _STDIO_HEADERS_H */
/****************************************************************************/
void
__duplicate_fd(struct fd * duplicate_fd,struct fd * original_fd)
{
HOOKFUNC hook_function;
assert( duplicate_fd != NULL && original_fd != NULL );
/* Obtain the hook function associated with the file; note that
this is different depending upon which operating system
release is being used (compare "stdio_initializefd.c"). */
#if defined(__amigaos4__)
{
hook_function = original_fd->fd_Hook->h_Entry;
}
#else
{
hook_function = original_fd->fd_Hook->h_SubEntry;
}
#endif /* __amigaos4__ */
/* Initialize the duplicate to match the original. */
__initialize_fd(duplicate_fd,hook_function,original_fd->fd_DefaultFile,original_fd->fd_Flags);
/* Figure out where the linked list of file descriptors associated
with this one starts. */
if(original_fd->fd_Original != NULL)
duplicate_fd->fd_Original = original_fd->fd_Original;
else
duplicate_fd->fd_Original = original_fd;
/* Add the duplicate at the beginning of the list. */
duplicate_fd->fd_NextLink = duplicate_fd->fd_Original->fd_NextLink;
duplicate_fd->fd_Original->fd_NextLink = duplicate_fd;
}