130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*
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* Copyright (c) 2019, Nutanix Inc. All rights reserved.
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* Author: Thanos Makatos <thanos@nutanix.com>
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* Swapnil Ingle <swapnil.ingle@nutanix.com>
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* Felipe Franciosi <felipe@nutanix.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Nutanix nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*/
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/* null PCI device, doesn't do anything */
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#include <stdio.h>
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#include <err.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <errno.h>
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#include <string.h>
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#include "common.h"
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#include "libvfio-user.h"
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static void
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null_log(vfu_ctx_t *vfu_ctx UNUSED, UNUSED int level, char const *msg)
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{
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fprintf(stderr, "null: %s", msg);
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}
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static void* null_drive(void *arg)
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{
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vfu_ctx_t *vfu_ctx = (vfu_ctx_t*)arg;
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int ret = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
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if (ret != 0) {
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fprintf(stderr, "failed to enable cancel state: %s\n", strerror(ret));
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return NULL;
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}
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ret = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
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if (ret != 0) {
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fprintf(stderr, "failed to enable cancel type: %s\n", strerror(ret));
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return NULL;
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}
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ret = vfu_realize_ctx(vfu_ctx);
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if (ret < 0) {
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fprintf(stderr, "failed to realize device\n");
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return NULL;
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}
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ret = vfu_attach_ctx(vfu_ctx);
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if (ret < 0) {
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fprintf(stderr, "failed to attach device\n");
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return NULL;
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}
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printf("starting device emulation\n");
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vfu_run_ctx(vfu_ctx);
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return NULL;
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}
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int main(int argc, char **argv)
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{
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int ret;
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pthread_t thread;
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if (argc != 2) {
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errx(EXIT_FAILURE, "missing vfio-user socket path");
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}
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vfu_ctx_t *vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, argv[1], 0, NULL,
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VFU_DEV_TYPE_PCI);
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if (vfu_ctx == NULL) {
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err(EXIT_FAILURE, "failed to create libvfio-user context");
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}
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ret = vfu_setup_log(vfu_ctx, null_log, LOG_DEBUG);
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if (ret < 0) {
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err(EXIT_FAILURE, "failed to setup log");
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}
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if (vfu_pci_init(vfu_ctx, VFU_PCI_TYPE_CONVENTIONAL,
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PCI_HEADER_TYPE_NORMAL, 0) < 0) {
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err(EXIT_FAILURE, "vfu_pci_init() failed");
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}
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ret = pthread_create(&thread, NULL, null_drive, vfu_ctx);
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if (ret != 0) {
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errno = ret;
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err(EXIT_FAILURE, "failed to create pthread");
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}
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printf("press enter to stop device emulation and clean up\n");
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if (getchar() == EOF) {
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err(EXIT_FAILURE, NULL);
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}
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ret = pthread_cancel(thread);
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if (ret != 0) {
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errno = ret;
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err(EXIT_FAILURE, "failed to create pthread");
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}
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vfu_destroy_ctx(vfu_ctx);
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printf("device emulation stopped and cleaned up, press enter to exit\n");
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if (getchar() == EOF) {
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err(EXIT_FAILURE, NULL);
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}
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return ret;
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}
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/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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