/**************************************************************************** * apps/canutils/canlib/canlib_getsilent.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include <nuttx/config.h> #include <sys/ioctl.h> #include <stdio.h> #include <stdlib.h> #include <stdbool.h> #include <fcntl.h> #include <debug.h> #include <errno.h> #include <nuttx/can/can.h> /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: canlib_getsilent * * Description: * Wrapper for CANIOC_GET_CONNMODES. * * Input Parameter: * fd - file descriptor of an opened can device * loopback - pointer to a buffer to store the current silent mode state. * * Returned Value: * Zero (OK) is returned on success. Otherwise -1 (ERROR) * is returned with the errno variable set to indicate the * nature of the error. * ****************************************************************************/ int canlib_getsilent(int fd, FAR bool *silent) { int ret; struct canioc_connmodes_s connmodes; ret = ioctl(fd, CANIOC_GET_CONNMODES, (unsigned long)&connmodes); if (ret != OK) { canerr("CANIOC_GET_CONNMODES failed, errno=%d\n", errno); return FALSE; } *silent = (bool)connmodes.bm_silent; return ret; }