diff options
Diffstat (limited to 'lib/librte_vhost/vhost_cuse/eventfd_copy.c')
-rw-r--r-- | lib/librte_vhost/vhost_cuse/eventfd_copy.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/lib/librte_vhost/vhost_cuse/eventfd_copy.c b/lib/librte_vhost/vhost_cuse/eventfd_copy.c deleted file mode 100644 index 154b32a4..00000000 --- a/lib/librte_vhost/vhost_cuse/eventfd_copy.c +++ /dev/null @@ -1,104 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * 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 Intel Corporation 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 THE COPYRIGHT - * OWNER OR CONTRIBUTORS 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 <unistd.h> -#include <sys/eventfd.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - -#include <rte_log.h> - -#include "eventfd_link/eventfd_link.h" -#include "eventfd_copy.h" -#include "vhost-net.h" - -static const char eventfd_cdev[] = "/dev/eventfd-link"; - -static int eventfd_link = -1; - -int -eventfd_init(void) -{ - if (eventfd_link >= 0) - return 0; - - eventfd_link = open(eventfd_cdev, O_RDWR); - if (eventfd_link < 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "eventfd_link module is not loaded\n"); - return -1; - } - - return 0; -} - -int -eventfd_free(void) -{ - if (eventfd_link >= 0) - close(eventfd_link); - return 0; -} - -/* - * This function uses the eventfd_link kernel module to copy an eventfd file - * descriptor provided by QEMU in to our process space. - */ -int -eventfd_copy(int target_fd, int target_pid) -{ - int ret; - struct eventfd_copy2 eventfd_copy2; - - - /* Open the character device to the kernel module. */ - /* TODO: check this earlier rather than fail until VM boots! */ - if (eventfd_init() < 0) - return -1; - - eventfd_copy2.fd = target_fd; - eventfd_copy2.pid = target_pid; - eventfd_copy2.flags = O_NONBLOCK | O_CLOEXEC; - /* Call the IOCTL to copy the eventfd. */ - ret = ioctl(eventfd_link, EVENTFD_COPY2, &eventfd_copy2); - - if (ret < 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "EVENTFD_COPY2 ioctl failed\n"); - return -1; - } - - return ret; -} |