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amiga-clib2/library/stdio_growfdtable.c
Olaf Barthel 7f0f7929ba - Updated copyright text and contact information
- Replaced ISO Latin 1 code #160 with a plain blank space (ASCII code #32) where necessary


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15305 87f5fb63-7c3d-0410-a384-fd976d0f7a62
2015-06-10 13:13:40 +00:00

111 lines
2.8 KiB
C

/*
* $Id: stdio_growfdtable.c,v 1.9 2006-01-08 12:04:24 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
* 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 */
/****************************************************************************/
#ifndef _STDLIB_MEMORY_H
#include "stdlib_memory.h"
#endif /* _STDLIB_MEMORY_H */
/****************************************************************************/
int
__grow_fd_table(int max_fd)
{
const int granularity = 10;
int new_num_fd;
int result = ERROR;
if(max_fd == 0)
new_num_fd = __num_fd + granularity;
else
new_num_fd = max_fd;
if(new_num_fd > __num_fd)
{
struct fd ** new_fd;
int i;
new_fd = malloc(sizeof(*new_fd) * new_num_fd);
if(new_fd == NULL)
{
SHOWMSG("not enough memory for new file descriptor table");
__set_errno(ENOMEM);
goto out;
}
for(i = __num_fd ; i < new_num_fd ; i++)
{
new_fd[i] = malloc(sizeof(*new_fd[i]));
if(new_fd[i] == NULL)
{
int j;
SHOWMSG("not enough memory for new file descriptor table entry");
for(j = __num_fd ; j < i ; j++)
free(new_fd[j]);
free(new_fd);
__set_errno(ENOMEM);
goto out;
}
memset(new_fd[i],0,sizeof(*new_fd[i]));
}
if(__fd != NULL)
{
for(i = 0 ; i < __num_fd ; i++)
new_fd[i] = __fd[i];
free(__fd);
}
__fd = new_fd;
__num_fd = new_num_fd;
}
result = OK;
out:
return(result);
}