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/* ----------------------------------------------------------------------- *
*
* Copyright 2003-2008 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
#include <errno.h>
#include <com32.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "file.h"
/*
* openmem.c
*
* Open a chunk of memory as if it was a file
*/
const struct input_dev __file_dev;
int openmem(const void *base, size_t len, int flags)
{
int fd;
struct file_info *fp;
fd = opendev(&__file_dev, NULL, flags);
if (fd < 0)
return -1;
fp = &__file_info[fd];
fp->i.fd.size = fp->i.nbytes = len;
fp->i.datap = (void *)base;
fp->i.fd.handle = 0; /* No actual file */
fp->i.offset = 0;
return fd;
}
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