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/*-
* Copyright (c) 2003-2004 Tim Kientzle
* All rights reserved.
*
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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/cdefs.h>
__FBSDID("$FreeBSD$");
#ifdef DMALLOC
#include <dmalloc.h>
#endif
#include <unistd.h>
#include "archive.h"
#include "archive_private.h"
/*
* This implementation minimizes copying of data.
*/
ssize_t
archive_read_data_into_fd(struct archive *a, int fd)
{
ssize_t bytes_read, bytes_written, total_written;
const void *buff;
total_written = 0;
while (a->entry_bytes_remaining > 0) {
bytes_read = (a->compression_read_ahead)(a, &buff,
a->entry_bytes_remaining);
if (bytes_read < 0)
return (-1);
if ((size_t)bytes_read > a->entry_bytes_remaining)
bytes_read = (ssize_t)a->entry_bytes_remaining;
bytes_written = write(fd, buff, bytes_read);
if (bytes_written < 0)
return (-1);
(a->compression_read_consume)(a, bytes_written);
total_written += bytes_written;
a->entry_bytes_remaining -= bytes_written;
}
return (total_written);
}
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