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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2018 Canonical. All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <libaio.h>
#include <err.h>
io_context_t io_ctx;
static void
do_sync_io(struct iocb *iocb)
{
struct io_event event;
struct iocb *iocbs[] = { iocb };
struct timespec ts = { 30, 0 };
if (io_submit(io_ctx, 1, iocbs) != 1)
err(1, "io_submit failed");
if (io_getevents(io_ctx, 0, 1, &event, &ts) != 1)
err(1, "io_getevents failed");
}
int
main(int argc, char **argv)
{
(void) argc;
char *buf;
int page_size = getpagesize();
int buf_size = strtol(argv[2], NULL, 0);
int rwfd;
struct iocb iocb;
if (io_queue_init(1024, &io_ctx))
err(1, "io_queue_init failed");
rwfd = open(argv[1], O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
if (rwfd < 0)
err(1, "open failed");
if (ftruncate(rwfd, buf_size) < 0)
err(1, "ftruncate failed");
buf = mmap(0, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rwfd, 0);
if (buf == MAP_FAILED)
err(1, "mmap failed");
(void) io_prep_pwrite(&iocb, rwfd, buf, buf_size, 0);
do_sync_io(&iocb);
(void) io_prep_pread(&iocb, rwfd, buf, buf_size, 0);
do_sync_io(&iocb);
if (close(rwfd))
err(1, "close failed");
if (io_queue_release(io_ctx) != 0)
err(1, "io_queue_release failed");
return (0);
}
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