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/* 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 "mbed.h"
#include "ffconf.h"
#include "mbed_debug.h"
#include "FATFileSystem.h"
#include "FATFileHandle.h"
#include "FATDirHandle.h"
DWORD get_fattime(void) {
time_t rawtime;
time(&rawtime);
struct tm *ptm = localtime(&rawtime);
return (DWORD)(ptm->tm_year - 80) << 25
| (DWORD)(ptm->tm_mon + 1 ) << 21
| (DWORD)(ptm->tm_mday ) << 16
| (DWORD)(ptm->tm_hour ) << 11
| (DWORD)(ptm->tm_min ) << 5
| (DWORD)(ptm->tm_sec/2 );
}
FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
for(int i=0; i<_VOLUMES; i++) {
if(_ffs[i] == 0) {
_ffs[i] = this;
_fsid = i;
debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
f_mount(i, &_fs);
return;
}
}
error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
}
FATFileSystem::~FATFileSystem() {
for (int i=0; i<_VOLUMES; i++) {
if (_ffs[i] == this) {
_ffs[i] = 0;
f_mount(i, NULL);
}
}
}
FileHandle *FATFileSystem::open(const char* name, int flags) {
debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
char n[64];
sprintf(n, "%d:/%s", _fsid, name);
/* POSIX flags -> FatFS open mode */
BYTE openmode;
if (flags & O_RDWR) {
openmode = FA_READ|FA_WRITE;
} else if(flags & O_WRONLY) {
openmode = FA_WRITE;
} else {
openmode = FA_READ;
}
if(flags & O_CREAT) {
if(flags & O_TRUNC) {
openmode |= FA_CREATE_ALWAYS;
} else {
openmode |= FA_OPEN_ALWAYS;
}
}
FIL fh;
FRESULT res = f_open(&fh, n, openmode);
if (res) {
debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
return NULL;
}
if (flags & O_APPEND) {
f_lseek(&fh, fh.fsize);
}
return new FATFileHandle(fh);
}
int FATFileSystem::remove(const char *filename) {
FRESULT res = f_unlink(filename);
if (res) {
debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
return -1;
}
return 0;
}
int FATFileSystem::rename(const char *oldname, const char *newname) {
FRESULT res = f_rename(oldname, newname);
if (res) {
debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
return -1;
}
return 0;
}
int FATFileSystem::format() {
FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
if (res) {
debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
return -1;
}
return 0;
}
DirHandle *FATFileSystem::opendir(const char *name) {
FATFS_DIR dir;
FRESULT res = f_opendir(&dir, name);
if (res != 0) {
return NULL;
}
return new FATDirHandle(dir);
}
int FATFileSystem::mkdir(const char *name, mode_t mode) {
FRESULT res = f_mkdir(name);
return res == 0 ? 0 : -1;
}
int FATFileSystem::mount() {
FRESULT res = f_mount(_fsid, &_fs);
return res == 0 ? 0 : -1;
}
int FATFileSystem::unmount() {
if (disk_sync())
return -1;
FRESULT res = f_mount(_fsid, NULL);
return res == 0 ? 0 : -1;
}
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