1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "libtrusty" 18 19 #include <errno.h> 20 #include <fcntl.h> 21 #include <stdbool.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <sys/ioctl.h> 26 #include <unistd.h> 27 28 #include <log/log.h> 29 30 #include "tipc_ioctl.h" 31 tipc_connect(const char * dev_name,const char * srv_name)32 int tipc_connect(const char *dev_name, const char *srv_name) 33 { 34 int fd; 35 int rc; 36 37 fd = open(dev_name, O_RDWR); 38 if (fd < 0) { 39 rc = -errno; 40 ALOGE("%s: cannot open tipc device \"%s\": %s\n", 41 __func__, dev_name, strerror(errno)); 42 return rc < 0 ? rc : -1; 43 } 44 45 rc = ioctl(fd, TIPC_IOC_CONNECT, srv_name); 46 if (rc < 0) { 47 rc = -errno; 48 ALOGE("%s: can't connect to tipc service \"%s\" (err=%d)\n", 49 __func__, srv_name, errno); 50 close(fd); 51 return rc < 0 ? rc : -1; 52 } 53 54 ALOGV("%s: connected to \"%s\" fd %d\n", __func__, srv_name, fd); 55 return fd; 56 } 57 tipc_close(int fd)58 void tipc_close(int fd) 59 { 60 close(fd); 61 } 62