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https://github.com/winfsp/winfsp.git
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tst: passthrough file system: WIP
This commit is contained in:
Bill Zissimopoulos
parent
d519145f61
commit
eea92e89ef
@ -26,13 +26,19 @@
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#define warn(format, ...) FspServiceLog(EVENTLOG_WARNING_TYPE, format, __VA_ARGS__)
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#define fail(format, ...) FspServiceLog(EVENTLOG_ERROR_TYPE, format, __VA_ARGS__)
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#define ConcatPath(Ptfs, FN, FP) (0 == StringCbPrintfW(FP, sizeof FP, L"%s%s", Ptfs->Path, FN))
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#define HandleFromContext(FC) (((PTFS_FILE_CONTEXT *)(FC))->Handle)
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typedef struct
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{
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FSP_FILE_SYSTEM *FileSystem;
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PWSTR Path;
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} PTFS;
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#define ConcatPath(Ptfs, FN, FP) (0 == StringCbPrintfW(FP, sizeof FP, L"%s%s", Ptfs->Path, FN))
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typedef struct
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{
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HANDLE Handle;
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} PTFS_FILE_CONTEXT;
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static NTSTATUS GetFileInfoInternal(HANDLE Handle, FSP_FSCTL_FILE_INFO *FileInfo)
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{
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@ -151,11 +157,15 @@ static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
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WCHAR FullPath[FULLPATH_SIZE];
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SECURITY_ATTRIBUTES SecurityAttributes;
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ULONG CreateDirectory;
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HANDLE Handle;
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PTFS_FILE_CONTEXT *FileContext;
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if (!ConcatPath(Ptfs, FileName, FullPath))
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return STATUS_OBJECT_NAME_INVALID;
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FileContext = malloc(sizeof *FileContext);
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if (0 == FileContext)
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return STATUS_INSUFFICIENT_RESOURCES;
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SecurityAttributes.nLength = sizeof SecurityAttributes;
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SecurityAttributes.lpSecurityDescriptor = SecurityDescriptor;
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SecurityAttributes.bInheritHandle = FALSE;
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@ -174,15 +184,18 @@ static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
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if (0 == FileAttributes)
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FileAttributes = FILE_ATTRIBUTE_NORMAL;
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Handle = CreateFileW(FullPath,
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FileContext->Handle = CreateFileW(FullPath,
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GrantedAccess, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, &SecurityAttributes,
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CREATE_NEW, FileAttributes | CreateDirectory | FILE_FLAG_BACKUP_SEMANTICS, 0);
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if (INVALID_HANDLE_VALUE == Handle)
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if (INVALID_HANDLE_VALUE == FileContext->Handle)
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{
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free(FileContext);
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return FspNtStatusFromWin32(GetLastError());
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}
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*PFileContext = Handle;
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*PFileContext = FileContext;
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return GetFileInfoInternal(Handle, FileInfo);
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return GetFileInfoInternal(FileContext->Handle, FileInfo);
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}
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static NTSTATUS Open(FSP_FILE_SYSTEM *FileSystem,
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@ -191,27 +204,34 @@ static NTSTATUS Open(FSP_FILE_SYSTEM *FileSystem,
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{
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PTFS *Ptfs = (PTFS *)FileSystem->UserContext;
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WCHAR FullPath[FULLPATH_SIZE];
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HANDLE Handle;
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PTFS_FILE_CONTEXT *FileContext;
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if (!ConcatPath(Ptfs, FileName, FullPath))
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return STATUS_OBJECT_NAME_INVALID;
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Handle = CreateFileW(FullPath,
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FileContext = malloc(sizeof *FileContext);
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if (0 == FileContext)
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return STATUS_INSUFFICIENT_RESOURCES;
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FileContext->Handle = CreateFileW(FullPath,
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GrantedAccess, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0,
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OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
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if (INVALID_HANDLE_VALUE == Handle)
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if (INVALID_HANDLE_VALUE == FileContext->Handle)
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{
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free(FileContext);
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return FspNtStatusFromWin32(GetLastError());
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}
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*PFileContext = Handle;
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*PFileContext = FileContext;
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return GetFileInfoInternal(Handle, FileInfo);
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return GetFileInfoInternal(FileContext->Handle, FileInfo);
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}
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static NTSTATUS Overwrite(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext, UINT32 FileAttributes, BOOLEAN ReplaceFileAttributes, UINT64 AllocationSize,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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FILE_BASIC_INFO BasicInfo = { 0 };
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FILE_ALLOCATION_INFO AllocationInfo = { 0 };
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FILE_ATTRIBUTE_TAG_INFO AttributeTagInfo;
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@ -248,24 +268,32 @@ static NTSTATUS Overwrite(FSP_FILE_SYSTEM *FileSystem,
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static VOID Cleanup(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext, PWSTR FileName, ULONG Flags)
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{
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HANDLE Handle = HandleFromContext(FileContext);
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if (Flags & FspCleanupDelete)
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{
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CloseHandle(Handle);
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/* this will make all future uses of Handle to fail with STATUS_INVALID_HANDLE */
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HandleFromContext(FileContext) = INVALID_HANDLE_VALUE;
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}
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}
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static VOID Close(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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CloseHandle(Handle);
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free(FileContext);
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}
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static NTSTATUS Read(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext, PVOID Buffer, UINT64 Offset, ULONG Length,
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PULONG PBytesTransferred)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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OVERLAPPED Overlapped = { 0 };
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Overlapped.Offset = (DWORD)Offset;
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@ -282,7 +310,7 @@ static NTSTATUS Write(FSP_FILE_SYSTEM *FileSystem,
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BOOLEAN WriteToEndOfFile, BOOLEAN ConstrainedIo,
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PULONG PBytesTransferred, FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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LARGE_INTEGER FileSize;
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OVERLAPPED Overlapped = { 0 };
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@ -310,7 +338,7 @@ NTSTATUS Flush(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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/* we do not flush the whole volume, so just return SUCCESS */
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if (0 == Handle)
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@ -326,7 +354,7 @@ static NTSTATUS GetFileInfo(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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return GetFileInfoInternal(Handle, FileInfo);
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}
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@ -336,7 +364,7 @@ static NTSTATUS SetBasicInfo(FSP_FILE_SYSTEM *FileSystem,
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UINT64 CreationTime, UINT64 LastAccessTime, UINT64 LastWriteTime, UINT64 ChangeTime,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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FILE_BASIC_INFO BasicInfo = { 0 };
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BasicInfo.FileAttributes = INVALID_FILE_ATTRIBUTES != FileAttributes ? FileAttributes : 0;
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@ -356,7 +384,7 @@ static NTSTATUS SetFileSize(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext, UINT64 NewSize, BOOLEAN SetAllocationSize,
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FSP_FSCTL_FILE_INFO *FileInfo)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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FILE_ALLOCATION_INFO AllocationInfo;
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FILE_END_OF_FILE_INFO EndOfFileInfo;
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@ -394,7 +422,7 @@ static NTSTATUS SetFileSize(FSP_FILE_SYSTEM *FileSystem,
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static NTSTATUS CanDelete(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext, PWSTR FileName)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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FILE_DISPOSITION_INFO DispositionInfo;
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DispositionInfo.DeleteFile = TRUE;
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@ -417,7 +445,7 @@ static NTSTATUS GetSecurity(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext,
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PSECURITY_DESCRIPTOR SecurityDescriptor, SIZE_T *PSecurityDescriptorSize)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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DWORD SecurityDescriptorSizeNeeded;
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if (!GetKernelObjectSecurity(Handle,
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@ -437,7 +465,7 @@ static NTSTATUS SetSecurity(FSP_FILE_SYSTEM *FileSystem,
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PVOID FileContext,
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SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor)
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{
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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if (!SetKernelObjectSecurity(Handle, SecurityInformation, ModificationDescriptor))
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return FspNtStatusFromWin32(GetLastError());
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@ -451,7 +479,7 @@ static NTSTATUS ReadDirectory(FSP_FILE_SYSTEM *FileSystem,
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PULONG PBytesTransferred)
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{
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PTFS *Ptfs = (PTFS *)FileSystem->UserContext;
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HANDLE Handle = FileContext;
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HANDLE Handle = HandleFromContext(FileContext);
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WCHAR FullPath[FULLPATH_SIZE];
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ULONG Length, PatternLength;
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HANDLE FindHandle;
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