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/*
* Copyright (c) 2019, Nutanix Inc. All rights reserved.
* Author: Thanos Makatos <thanos@nutanix.com>
* Swapnil Ingle <swapnil.ingle@nutanix.com>
* Felipe Franciosi <felipe@nutanix.com>
*
* 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.
* * 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.
* * Neither the name of Nutanix nor the names of its 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 <COPYRIGHT HOLDER> 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.
*
*/
/* null PCI device, doesn't do anything */
#include <stdio.h>
#include <err.h>
#include <stdlib.h>
#include <pthread.h>
#include <errno.h>
#include <string.h>
#include "common.h"
#include "libvfio-user.h"
static void
null_log(vfu_ctx_t *vfu_ctx UNUSED, UNUSED int level, char const *msg)
{
fprintf(stderr, "null: %s", msg);
}
static void* null_drive(void *arg)
{
vfu_ctx_t *vfu_ctx = (vfu_ctx_t*)arg;
int ret = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
if (ret != 0) {
fprintf(stderr, "failed to enable cancel state: %s\n", strerror(ret));
return NULL;
}
ret = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
if (ret != 0) {
fprintf(stderr, "failed to enable cancel type: %s\n", strerror(ret));
return NULL;
}
ret = vfu_realize_ctx(vfu_ctx);
if (ret < 0) {
fprintf(stderr, "failed to realize device\n");
return NULL;
}
ret = vfu_attach_ctx(vfu_ctx);
if (ret < 0) {
fprintf(stderr, "failed to attach device\n");
return NULL;
}
printf("starting device emulation\n");
vfu_run_ctx(vfu_ctx);
return NULL;
}
int main(int argc, char **argv)
{
int ret;
pthread_t thread;
if (argc != 2) {
errx(EXIT_FAILURE, "missing vfio-user socket path");
}
vfu_ctx_t *vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, argv[1], 0, NULL,
VFU_DEV_TYPE_PCI);
if (vfu_ctx == NULL) {
err(EXIT_FAILURE, "failed to create libvfio-user context");
}
ret = vfu_setup_log(vfu_ctx, null_log, LOG_DEBUG);
if (ret < 0) {
err(EXIT_FAILURE, "failed to setup log");
}
if (vfu_pci_init(vfu_ctx, VFU_PCI_TYPE_CONVENTIONAL,
PCI_HEADER_TYPE_NORMAL, 0) < 0) {
err(EXIT_FAILURE, "vfu_pci_init() failed");
}
ret = pthread_create(&thread, NULL, null_drive, vfu_ctx);
if (ret != 0) {
errno = ret;
err(EXIT_FAILURE, "failed to create pthread");
}
printf("press enter to stop device emulation and clean up\n");
if (getchar() == EOF) {
err(EXIT_FAILURE, NULL);
}
ret = pthread_cancel(thread);
if (ret != 0) {
errno = ret;
err(EXIT_FAILURE, "failed to create pthread");
}
vfu_destroy_ctx(vfu_ctx);
printf("device emulation stopped and cleaned up, press enter to exit\n");
if (getchar() == EOF) {
err(EXIT_FAILURE, NULL);
}
return ret;
}
/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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