140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/*
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* Copyright (C) 2017 THL A29 Limited, a Tencent company.
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* All rights reserved.
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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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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include "rtioctl.h"
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#include "ff_ipc.h"
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int rt_shutdown_rd = 0;
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int rt_sofib = 0;
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int
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rt_socket(int domain, int type, int protocol)
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{
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if (domain != PF_ROUTE || type != SOCK_RAW) {
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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int
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rt_shutdown(int fd, int how)
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{
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if (how == SHUT_RD) {
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rt_shutdown_rd = 1;
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}
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return 0;
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}
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int
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rt_setsockopt(int sockfd, int level, int optname,
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const void *optval, socklen_t optlen)
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{
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if (level == SOL_SOCKET && optname == SO_SETFIB) {
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rt_sofib = *(int *)optval;
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}
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return 0;
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}
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void
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rt_close(int fd)
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{
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return;
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}
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int
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rtioctl(char *data, unsigned len, unsigned read_len)
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{
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struct ff_msg *msg, *retmsg = NULL;
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unsigned maxlen;
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msg = ff_ipc_msg_alloc();
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if (msg == NULL) {
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errno = ENOMEM;
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return -1;
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}
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if (len > msg->buf_len) {
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errno = EINVAL;
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ff_ipc_msg_free(msg);
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return -1;
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}
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if (read_len > msg->buf_len) {
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read_len = msg->buf_len;
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}
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maxlen = read_len ? read_len : len;
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msg->msg_type = FF_ROUTE;
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msg->route.fib = rt_sofib;
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msg->route.len = len;
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msg->route.maxlen = maxlen;
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msg->route.data = msg->buf_addr;
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memcpy(msg->route.data, data, len);
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msg->buf_addr += len;
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int ret = ff_ipc_send(msg);
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if (ret < 0) {
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errno = EPIPE;
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ff_ipc_msg_free(msg);
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return -1;
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}
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do {
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if (retmsg != NULL) {
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ff_ipc_msg_free(retmsg);
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}
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ret = ff_ipc_recv(&retmsg, msg->msg_type);
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if (ret < 0) {
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errno = EPIPE;
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ff_ipc_msg_free(msg);
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return -1;
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}
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} while (msg != retmsg);
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if (retmsg->result == 0) {
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ret = retmsg->route.len;
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if (!rt_shutdown_rd && read_len > 0) {
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memcpy(data, retmsg->route.data, retmsg->route.len);
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}
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} else {
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ret = -1;
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errno = retmsg->result;
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}
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ff_ipc_msg_free(msg);
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return ret;
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}
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