| /* |
| * Copyright (c) 2017, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "wlct_os.h" |
| #include "WlctCDevFile.h" |
| #include "LoggerSupport.h" |
| |
| extern "C" { |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/ioctl.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| }; |
| |
| const int CWlctCDevFile::INVALID_FD = -1; |
| |
| CWlctCDevFile::CWlctCDevFile(): fd(INVALID_FD) |
| { |
| } |
| |
| CWlctCDevFile::~CWlctCDevFile() |
| { |
| Close(); |
| } |
| |
| wlct_os_err_t CWlctCDevFile::Open(const char *fName, const char* interfaceName) |
| { |
| //do something with params |
| (void)interfaceName; |
| wlct_os_err_t res = WLCT_OS_ERROR_GEN_FAILURE; |
| |
| WLCT_ASSERT(IsOpened() == false); |
| WLCT_ASSERT(fName != NULL); |
| |
| devFileName = fName; |
| |
| LOG_MESSAGE_DEBUG("Char device file %s opening...", devFileName.c_str()); |
| |
| fd = open(devFileName.c_str(), 0); |
| if (INVALID_FD == fd) |
| { |
| res = errno; |
| LOG_MESSAGE_ERROR("Failed to open file %s (%d)", devFileName.c_str(), res); |
| goto Exit; |
| } |
| |
| LOG_MESSAGE_DEBUG("Char device file opened: fd=%d", fd); |
| |
| res = WLCT_OS_ERROR_SUCCESS; |
| |
| Exit: |
| if (res != WLCT_OS_ERROR_SUCCESS) |
| { |
| Close(); |
| } |
| |
| return res; |
| } |
| |
| void CWlctCDevFile::Close() |
| { |
| if (fd != INVALID_FD) |
| { |
| close(fd); |
| fd = INVALID_FD; |
| } |
| |
| devFileName.erase(); |
| } |
| |
| wlct_os_err_t CWlctCDevFile::Ioctl(void *dataBuf, |
| DWORD dataBufLen, |
| DWORD ioctlFlags) |
| { |
| wlct_os_err_t res = WLCT_OS_ERROR_GEN_FAILURE; |
| wlct_cdev_ioctl_hdr_t *ioctl_hdr = NULL; |
| |
| WLCT_ASSERT(IsOpened() == true); |
| WLCT_ASSERT(dataBuf != NULL); |
| WLCT_ASSERT(dataBufLen != 0); |
| |
| ioctl_hdr = (wlct_cdev_ioctl_hdr_t *)malloc((sizeof *ioctl_hdr) + dataBufLen); |
| if (NULL == ioctl_hdr) |
| { |
| LOG_MESSAGE_ERROR("Allocation failed (data of %u bytes)\n", dataBufLen); |
| res = WLCT_OS_ERROR_NOT_ENOUGH_MEMORY; |
| goto Exit; |
| } |
| |
| ioctl_hdr->magic = WLCT_IOCTL_MAGIC; |
| ioctl_hdr->len = dataBufLen; |
| ioctl_hdr->flags = ioctlFlags; |
| |
| if (ioctlFlags & WLCT_IOCTL_FLAG_SET) |
| memcpy(ioctl_hdr + 1, dataBuf, dataBufLen); |
| |
| res = ioctl(fd, 0, ioctl_hdr); |
| if (0 != res) |
| { |
| res = errno; |
| LOG_MESSAGE_ERROR("ioctl failed with error code %d", res); |
| goto Exit; |
| } |
| |
| if (ioctlFlags & WLCT_IOCTL_FLAG_GET) |
| memcpy(dataBuf, ioctl_hdr + 1, dataBufLen); |
| |
| Exit: |
| if (NULL != ioctl_hdr) |
| free(ioctl_hdr); |
| |
| return res; |
| } |