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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "libtrusty"
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <log/log.h>
#include <trusty/ipc.h>
int tipc_connect(const char* dev_name, const char* srv_name) {
int fd;
int rc;
fd = TEMP_FAILURE_RETRY(open(dev_name, O_RDWR));
if (fd < 0) {
rc = -errno;
ALOGE("%s: cannot open tipc device \"%s\": %s\n", __func__, dev_name, strerror(errno));
return rc < 0 ? rc : -1;
}
rc = TEMP_FAILURE_RETRY(ioctl(fd, TIPC_IOC_CONNECT, srv_name));
if (rc < 0) {
rc = -errno;
ALOGE("%s: can't connect to tipc service \"%s\" (err=%d)\n", __func__, srv_name, errno);
close(fd);
return rc < 0 ? rc : -1;
}
ALOGV("%s: connected to \"%s\" fd %d\n", __func__, srv_name, fd);
return fd;
}
ssize_t tipc_send(int fd, const struct iovec* iov, int iovcnt, struct trusty_shm* shms,
int shmcnt) {
struct tipc_send_msg_req req;
req.iov = (__u64)iov;
req.iov_cnt = (__u64)iovcnt;
req.shm = (__u64)shms;
req.shm_cnt = (__u64)shmcnt;
int rc = TEMP_FAILURE_RETRY(ioctl(fd, TIPC_IOC_SEND_MSG, &req));
if (rc < 0) {
ALOGE("%s: failed to send message (err=%d)\n", __func__, rc);
}
return rc;
}
void tipc_close(int fd) {
close(fd);
}
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