/*! * @section LICENSE * * (C) Copyright 2011~2014 Bosch Sensortec GmbH All Rights Reserved * * 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. * *------------------------------------------------------------------------------ * Disclaimer * * Common: Bosch Sensortec products are developed for the consumer goods * industry. They may only be used within the parameters of the respective valid * product data sheet. Bosch Sensortec products are provided with the express * understanding that there is no warranty of fitness for a particular purpose. * They are not fit for use in life-sustaining, safety or security sensitive * systems or any system or device that may lead to bodily harm or property * damage if the system or device malfunctions. In addition, Bosch Sensortec * products are not fit for use in products which interact with motor vehicle * systems. The resale and/or use of products are at the purchaser's own risk * and his own responsibility. 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The testing of an * engineering sample may in no way replace the testing of a product series. * Bosch Sensortec assumes no liability for the use of engineering samples. By * accepting the engineering samples, the Purchaser agrees to indemnify Bosch * Sensortec from all claims arising from the use of engineering samples. * * Special: This software module (hereinafter called "Software") and any * information on application-sheets (hereinafter called "Information") is * provided free of charge for the sole purpose to support your application * work. The Software and Information is subject to the following terms and * conditions: * * The Software is specifically designed for the exclusive use for Bosch * Sensortec products by personnel who have special experience and training. Do * not use this Software if you do not have the proper experience or training. * * This Software package is provided `` as is `` and without any expressed or * implied warranties, including without limitation, the implied warranties of * merchantability and fitness for a particular purpose. * * Bosch Sensortec and their representatives and agents deny any liability for * the functional impairment of this Software in terms of fitness, performance * and safety. Bosch Sensortec and their representatives and agents shall not be * liable for any direct or indirect damages or injury, except as otherwise * stipulated in mandatory applicable law. * * The Information provided is believed to be accurate and reliable. Bosch * Sensortec assumes no responsibility for the consequences of use of such * Information nor for any infringement of patents or other rights of third * parties which may result from its use. * * @file util_sysfs.h * @date "Wed May 15 13:59:10 2013 +0800" * @commit "efc882a" * * @brief * * @detail * */ #ifndef __UTIL_SYSFS_H #define __UTIL_SYSFS_H #include int sysfs_get_input_dev_num(const char *pname); int sysfs_read_int(const char *path, int *value); int sysfs_write_int(const char *path, int value); int sysfs_open_input_dev_node(int input_dev_num, const char *name, int mode); FILE *sysfs_fopen_input_dev_node(int input_dev_num, const char *name, char *mode); /*! * * @brief this function attempts to open a file to read up to 'size' bytes from * that file into 'buf' * * @param[i] filename filename to be read * @param[o] buf out put data buffer * @param[i] size input size to be read, size must be less than * 'buf' size * * @return >= 0 success. or -1 failed * @retval >=0 the count of true read size * @retval -1 failed to open or read file */ int util_fs_read_file(const char *filename, void *buf, int size); /*! * * @brief this function attempts to open a file to write up to 'size' bytes to * that file from 'buf' * * @param[i] filename filename to be read * @param[i] buf input data buffer * @param[i] size input size to be writen, size must be less or * equal than 'buf' size * * @return >= 0 success. or -1 failed * @retval >=0 the count of true read size * @retval -1 failed to open or read file */ int util_fs_write_file(const char *filename, void *buf, int size); /*! * @brief This function atempts to get the size of the file * * @param[i] filename target filename * * @return >= 0 success, return the file size, or -1 failed. * * @retval >=0, file size * @retval -1, failed to get file size * */ int util_fs_get_filesize(const char *filename); /*! * @brief This function detects whether a file is existing or not * * @param[i] filename input file name * * @return 0 file exist, or -1 file does not exist */ int util_fs_is_file_exist(const char *filename); #endif