bla bla bla
Fork of FATFileSystem by
FATFileHandle.cpp
- Committer:
- Kojto
- Date:
- 2016-08-25
- Revision:
- 8:c4baca9a2c3d
- Parent:
- 4:3ff2606d5713
File content as of revision 8:c4baca9a2c3d:
/* mbed Microcontroller Library * Copyright (c) 2006-2012 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "ff.h" #include "ffconf.h" #include "mbed_debug.h" #include "FATFileHandle.h" FATFileHandle::FATFileHandle(FIL fh, PlatformMutex * mutex): _mutex(mutex) { _fh = fh; } int FATFileHandle::close() { lock(); int retval = f_close(&_fh); unlock(); delete this; return retval; } ssize_t FATFileHandle::write(const void* buffer, size_t length) { lock(); UINT n; FRESULT res = f_write(&_fh, buffer, length, &n); if (res) { debug_if(FFS_DBG, "f_write() failed: %d", res); unlock(); return -1; } unlock(); return n; } ssize_t FATFileHandle::read(void* buffer, size_t length) { lock(); debug_if(FFS_DBG, "read(%d)\n", length); UINT n; FRESULT res = f_read(&_fh, buffer, length, &n); if (res) { debug_if(FFS_DBG, "f_read() failed: %d\n", res); unlock(); return -1; } unlock(); return n; } int FATFileHandle::isatty() { return 0; } off_t FATFileHandle::lseek(off_t position, int whence) { lock(); if (whence == SEEK_END) { position += _fh.fsize; } else if(whence==SEEK_CUR) { position += _fh.fptr; } FRESULT res = f_lseek(&_fh, position); if (res) { debug_if(FFS_DBG, "lseek failed: %d\n", res); unlock(); return -1; } else { debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr); unlock(); return _fh.fptr; } } int FATFileHandle::fsync() { lock(); FRESULT res = f_sync(&_fh); if (res) { debug_if(FFS_DBG, "f_sync() failed: %d\n", res); unlock(); return -1; } unlock(); return 0; } off_t FATFileHandle::flen() { lock(); off_t size = _fh.fsize; unlock(); return size; } void FATFileHandle::lock() { _mutex->lock(); } void FATFileHandle::unlock() { _mutex->unlock(); }