int frename (const char *oldname, const char *newname) {
/* Rename a file from 'oldname' to 'newname'. */
IOB *fcb;
int handle;
int drv2;
int i;
char newname_w_path[81];
START_LOCK (int);
/* Find an unused _iob structure. */
if ((handle = fs_find_iob ()) == EOF) {
RETURN (1);
}
fcb = &_iob[handle];
fcb->drive = fs_get_drive (oldname);
if (fcb->drive != DRV_NONE) {
/* Skip drive letter 'X:' */
oldname += 2;
}
else {
fcb->drive = _DEF_DRIVE;
}
drv2 = fs_get_drive (newname);
if (drv2 != DRV_NONE) {
newname += 2;
if (drv2 != fcb->drive) {
/* If provided, both drives must be the same. */
RETURN (1);
}
}
if (fcb->drive == DRV_MCARD) {
/* Find path part of old name. */
for (i = (strlen(oldname) - 1); i >= 0; i --) {
if (oldname[i] == '\\') {
break;
}
}
if (i) {
/* If path exists, add path to new name to search if it exists. */
memcpy(newname_w_path, oldname, i + 1);
newname_w_path[i+1] = 0;
strcat(newname_w_path, newname);
}
else {
memcpy(newname_w_path, newname, strlen(newname));
}
/* Rename a file located on Flash Memory Card. */
if (fat_find_file (newname_w_path, fcb) == __TRUE) {
/* File with 'newname' already exists */
RETURN (1);
}
if (fat_rename (oldname, newname, fcb) == __TRUE) {
RETURN (0);
}
RETURN (1);
}
/* Set drive parameters. */
if (fs_set_params (fcb) == __FALSE) {
RETURN (1);
}
if (fs_Find_File (newname, fcb) == 0) {
/* File with 'newname' already exists */
RETURN (1);
}
if (fs_Find_File (oldname, fcb) == 0) {
RETURN (_frename (newname, fcb));
}
/* File with 'oldname' not found */
RETURN (1);
END_LOCK;
}
int fat_request(DWORD Function, void *Params)
{
int Res;
switch (Function)
{
case FD32_READ:
{
fd32_read_t *X = (fd32_read_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_read_t)) return EINVAL;
F = (tFile *) X->DeviceId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_read(F, X->Buffer, X->BufferBytes);
}
case FD32_WRITE:
{
#ifdef FATWRITE
fd32_write_t *X = (fd32_write_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_write_t)) return EINVAL;
F = (tFile *) X->DeviceId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_write(F, X->Buffer, X->BufferBytes);
#else
return EROFS;
#endif
}
case FD32_LSEEK:
{
fd32_lseek_t *X = (fd32_lseek_t *) Params;
if (X->Size < sizeof(fd32_lseek_t)) return EINVAL;
if (((tFile *) X->DeviceId)->FilSig != FAT_FILSIG) return EBADF;
return fat_lseek((tFile *) X->DeviceId, &X->Offset, X->Origin);
}
case FD32_OPENFILE:
{
fd32_openfile_t *X = (fd32_openfile_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_openfile_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_open(V, X->FileName, X->Mode, X->Attr, X->AliasHint, (tFile **) &X->FileId);
}
case FD32_CLOSE:
{
fd32_close_t *X = (fd32_close_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_close_t)) return EINVAL;
F = (tFile *) X->DeviceId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_close(F);
}
case FD32_READDIR:
{
fd32_readdir_t *X = (fd32_readdir_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_readdir_t)) return EINVAL;
F = (tFile *) X->DirId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_readdir(F, (fd32_fs_lfnfind_t *) X->Entry);
}
case FD32_FFLUSH:
{
#ifdef FATWRITE
fd32_fflush_t *X = (fd32_fflush_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_fflush_t)) return EINVAL;
F = (tFile *) X->DeviceId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_fflush(F);
#else
return EROFS;
#endif
}
case FD32_OPEN:
{
fd32_open_t *X = (fd32_open_t *) Params;
if (X->Size < sizeof(fd32_open_t)) return EINVAL;
if (((tFile *) X->DeviceId)->FilSig != FAT_FILSIG) return EBADF;
return ++((tFile *) X->DeviceId)->References;
}
case FD32_GETATTR:
{
fd32_getattr_t *X = (fd32_getattr_t *) Params;
if (X->Size < sizeof(fd32_getattr_t)) return EINVAL;
if (((tFile *) X->FileId)->FilSig != FAT_FILSIG) return EBADF;
return fat_get_attr((tFile *) X->FileId, (fd32_fs_attr_t *) X->Attr);
}
case FD32_SETATTR:
{
#ifdef FATWRITE
fd32_setattr_t *X = (fd32_setattr_t *) Params;
tFile *F;
if (X->Size < sizeof(fd32_setattr_t)) return EINVAL;
F = (tFile *) X->FileId;
if (F->FilSig != FAT_FILSIG) return EBADF;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(F->V)) < 0) return Res;
#endif
return fat_set_attr(F, (fd32_fs_attr_t *) X->Attr);
#else
return EROFS;
#endif
}
case FD32_REOPENDIR:
{
fd32_reopendir_t *X = (fd32_reopendir_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_reopendir_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_reopendir(V, (tFindRes *) X->DtaReserved, (tFile **) &X->DirId);
}
case FD32_UNLINK:
{
#ifdef FATWRITE
fd32_unlink_t *X = (fd32_unlink_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_unlink_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_unlink(V, X->FileName, X->Flags);
#else
return EROFS;
#endif
}
case FD32_RENAME:
{
#ifdef FATWRITE
fd32_rename_t *X = (fd32_rename_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_rename_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_rename(V, X->OldName, X->NewName);
#else
return EROFS;
#endif
}
case FD32_MKDIR:
{
#ifdef FATWRITE
fd32_mkdir_t *X = (fd32_mkdir_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_mkdir_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_mkdir(V, X->DirName);
#else
return FD32_EROFS;
#endif
}
case FD32_RMDIR:
{
#ifdef FATWRITE
fd32_rmdir_t *X = (fd32_rmdir_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_rmdir_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_rmdir(V, X->DirName);
#else
return FD32_EROFS;
#endif
}
case FD32_MOUNT:
{
fd32_mount_t *X = (fd32_mount_t *) Params;
if (X->Size < sizeof(fd32_mount_t)) return EINVAL;
return fat_mount(X->hDev, (tVolume **) &X->FsDev);
}
case FD32_UNMOUNT:
{
fd32_unmount_t *X = (fd32_unmount_t *) Params;
tVolume *V;
if (X->Size < sizeof(fd32_unmount_t)) return EINVAL;
V = (tVolume *) X->DeviceId;
if (V->VolSig != FAT_VOLSIG) return ENODEV;
#ifdef FATREMOVABLE
if ((Res = fat_mediachange(V)) < 0) return Res;
#endif
return fat_unmount(V);
}
case FD32_PARTCHECK:
{
fd32_partcheck_t *X = (fd32_partcheck_t *) Params;
if (X->Size < sizeof(fd32_partcheck_t)) return EINVAL;
return fat_partcheck(X->PartId);
}
case FD32_GETFSINFO:
{
fd32_getfsinfo_t *X = (fd32_getfsinfo_t *) Params;
if (X->Size < sizeof(fd32_getfsinfo_t)) return EINVAL;
return fat_get_fsinfo((fd32_fs_info_t *) X->FSInfo);
}
case FD32_GETFSFREE:
return fat_get_fsfree((fd32_getfsfree_t *) Params);
}
return EINVAL;
}
