/**
* Rename a regular file / directory.
*
* @param old_parent inode of the old parent directory
* @param old_dentry old directory cache entry
* @param new_parent inode of the new parent directory
* @param new_dentry new directory cache entry
* @returns 0 on success, Linux error code otherwise
*/
static int sf_rename(struct inode *old_parent, struct dentry *old_dentry,
struct inode *new_parent, struct dentry *new_dentry)
{
int err = 0, rc = VINF_SUCCESS;
struct sf_glob_info *sf_g = GET_GLOB_INFO(old_parent->i_sb);
TRACE();
if (sf_g != GET_GLOB_INFO(new_parent->i_sb))
{
LogFunc(("rename with different roots\n"));
err = -EINVAL;
}
else
{
struct sf_inode_info *sf_old_i = GET_INODE_INFO(old_parent);
struct sf_inode_info *sf_new_i = GET_INODE_INFO(new_parent);
/* As we save the relative path inside the inode structure, we need to change
this if the rename is successful. */
struct sf_inode_info *sf_file_i = GET_INODE_INFO(old_dentry->d_inode);
SHFLSTRING *old_path;
SHFLSTRING *new_path;
BUG_ON(!sf_old_i);
BUG_ON(!sf_new_i);
BUG_ON(!sf_file_i);
old_path = sf_file_i->path;
err = sf_path_from_dentry(__func__, sf_g, sf_new_i,
new_dentry, &new_path);
if (err)
LogFunc(("failed to create new path\n"));
else
{
int fDir = ((old_dentry->d_inode->i_mode & S_IFDIR) != 0);
rc = vboxCallRename(&client_handle, &sf_g->map, old_path,
new_path, fDir ? 0 : SHFL_RENAME_FILE | SHFL_RENAME_REPLACE_IF_EXISTS);
if (RT_SUCCESS(rc))
{
kfree(old_path);
sf_new_i->force_restat = 1;
sf_old_i->force_restat = 1; /* XXX: needed? */
/* Set the new relative path in the inode. */
sf_file_i->path = new_path;
}
else
{
LogFunc(("vboxCallRename failed rc=%Rrc\n", rc));
err = -RTErrConvertToErrno(rc);
kfree(new_path);
}
}
}
return err;
}
NTSTATUS vbsfRename(IN PRX_CONTEXT RxContext,
IN FILE_INFORMATION_CLASS FileInformationClass,
IN PVOID pBuffer,
IN ULONG BufferLength)
{
NTSTATUS Status = STATUS_SUCCESS;
RxCaptureFcb;
RxCaptureFobx;
PMRX_VBOX_DEVICE_EXTENSION pDeviceExtension = VBoxMRxGetDeviceExtension(RxContext);
PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(capFcb->pNetRoot);
PMRX_VBOX_FOBX pVBoxFobx = VBoxMRxGetFileObjectExtension(capFobx);
PMRX_SRV_OPEN pSrvOpen = capFobx->pSrvOpen;
PFILE_RENAME_INFORMATION RenameInformation = (PFILE_RENAME_INFORMATION)RxContext->Info.Buffer;
PUNICODE_STRING RemainingName = GET_ALREADY_PREFIXED_NAME(pSrvOpen, capFcb);
int vboxRC;
PSHFLSTRING SrcPath = 0, DestPath = 0;
ULONG ParsedPathSize, flags;
Assert(FileInformationClass == FileRenameInformation);
Log(("VBOXSF: vbsfRename: FileName = %.*ls\n",
RenameInformation->FileNameLength / sizeof(WCHAR), &RenameInformation->FileName[0]));
/* Must close the file before renaming it! */
if (pVBoxFobx->hFile != SHFL_HANDLE_NIL)
{
vbsfCloseFileHandle(pDeviceExtension, pNetRootExtension, pVBoxFobx);
}
/* Mark it as renamed, so we do nothing during close */
SetFlag(pSrvOpen->Flags, SRVOPEN_FLAG_FILE_RENAMED);
/* Calculate length required for destination path. */
ParsedPathSize = sizeof(*DestPath) + (RenameInformation->FileNameLength + sizeof(WCHAR));
Log(("VBOXSF: vbsfRename: ParsedPathSize = %d\n",
ParsedPathSize));
DestPath = (PSHFLSTRING)vbsfAllocNonPagedMem(ParsedPathSize);
if (NULL == DestPath)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(DestPath, ParsedPathSize);
ShflStringInitBuffer(DestPath, ParsedPathSize - sizeof(SHFLSTRING));
Log(("VBOXSF: vbsfRename: Setting up destination path\n"));
DestPath->u16Size = (USHORT)(RenameInformation->FileNameLength + sizeof(WCHAR));
DestPath->u16Length = DestPath->u16Size - sizeof(WCHAR); /* without terminating null */
RtlCopyMemory(DestPath->String.ucs2, RenameInformation->FileName, DestPath->u16Length);
Log(("VBOXSF: vbsfRename: Destination path = %.*ls\n",
DestPath->u16Length / sizeof(WCHAR), &DestPath->String.ucs2[0]));
/* Calculate length required for source path */
ParsedPathSize = sizeof(*DestPath) + (RemainingName->Length + sizeof(WCHAR));
Log(("VBOXSF: vbsfRename: ParsedPathSize = %d\n", ParsedPathSize));
SrcPath = (PSHFLSTRING)vbsfAllocNonPagedMem(ParsedPathSize);
if (NULL == SrcPath)
{
vbsfFreeNonPagedMem(DestPath);
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(SrcPath, ParsedPathSize);
ShflStringInitBuffer(SrcPath, ParsedPathSize - sizeof(SHFLSTRING));
Log(("VBOXSF: vbsfRename: Setting up source path\n"));
SrcPath->u16Size = RemainingName->Length + sizeof(WCHAR);
SrcPath->u16Length = SrcPath->u16Size - sizeof(WCHAR); /* without terminating null */
RtlCopyMemory(SrcPath->String.ucs2, RemainingName->Buffer, SrcPath->u16Length);
Log(("VBOXSF: vbsfRename: Source path = %.*ls\n",
SrcPath->u16Length / sizeof(WCHAR), &SrcPath->String.ucs2[0]));
/* Call host. */
flags = pVBoxFobx->FileStandardInfo.Directory? SHFL_RENAME_DIR : SHFL_RENAME_FILE;
if (RenameInformation->ReplaceIfExists)
{
flags |= SHFL_RENAME_REPLACE_IF_EXISTS;
}
Log(("VBOXSF: vbsfRename: Calling vboxCallRename\n"));
vboxRC = vboxCallRename(&pDeviceExtension->hgcmClient, &pNetRootExtension->map, SrcPath, DestPath, flags);
vbsfFreeNonPagedMem(SrcPath);
vbsfFreeNonPagedMem(DestPath);
Status = VBoxErrorToNTStatus(vboxRC);
if (vboxRC != VINF_SUCCESS)
{
Log(("VBOXSF: vbsfRename: vboxCallRename failed with %Rrc\n",
vboxRC));
}
Log(("VBOXSF: vbsfRename: Returned 0x%08X\n",
Status));
return Status;
}