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tst: passthrough file system: WIP

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This commit is contained in:
Bill Zissimopoulos
2017-01-20 13:05:22 -08:00
parent d519145f61
commit eea92e89ef
1 changed files with 51 additions and 23 deletions
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74
tst/passthrough/passthrough.c
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@@ -26,13 +26,19 @@
#define warn(format, ...) FspServiceLog(EVENTLOG_WARNING_TYPE, format, __VA_ARGS__)
#define fail(format, ...) FspServiceLog(EVENTLOG_ERROR_TYPE, format, __VA_ARGS__)
#define ConcatPath(Ptfs, FN, FP) (0 == StringCbPrintfW(FP, sizeof FP, L"%s%s", Ptfs->Path, FN))
#define HandleFromContext(FC) (((PTFS_FILE_CONTEXT *)(FC))->Handle)
typedef struct
{
FSP_FILE_SYSTEM *FileSystem;
PWSTR Path;
} PTFS;
#define ConcatPath(Ptfs, FN, FP) (0 == StringCbPrintfW(FP, sizeof FP, L"%s%s", Ptfs->Path, FN))
typedef struct
{
HANDLE Handle;
} PTFS_FILE_CONTEXT;
static NTSTATUS GetFileInfoInternal(HANDLE Handle, FSP_FSCTL_FILE_INFO *FileInfo)
{
@@ -151,11 +157,15 @@ static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
WCHAR FullPath[FULLPATH_SIZE];
SECURITY_ATTRIBUTES SecurityAttributes;
ULONG CreateDirectory;
HANDLE Handle;
PTFS_FILE_CONTEXT *FileContext;
if (!ConcatPath(Ptfs, FileName, FullPath))
return STATUS_OBJECT_NAME_INVALID;
FileContext = malloc(sizeof *FileContext);
if (0 == FileContext)
return STATUS_INSUFFICIENT_RESOURCES;
SecurityAttributes.nLength = sizeof SecurityAttributes;
SecurityAttributes.lpSecurityDescriptor = SecurityDescriptor;
SecurityAttributes.bInheritHandle = FALSE;
@@ -174,15 +184,18 @@ static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
if (0 == FileAttributes)
FileAttributes = FILE_ATTRIBUTE_NORMAL;
Handle = CreateFileW(FullPath,
FileContext->Handle = CreateFileW(FullPath,
GrantedAccess, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, &SecurityAttributes,
CREATE_NEW, FileAttributes | CreateDirectory | FILE_FLAG_BACKUP_SEMANTICS, 0);
if (INVALID_HANDLE_VALUE == Handle)
if (INVALID_HANDLE_VALUE == FileContext->Handle)
{
free(FileContext);
return FspNtStatusFromWin32(GetLastError());
}
*PFileContext = Handle;
*PFileContext = FileContext;
return GetFileInfoInternal(Handle, FileInfo);
return GetFileInfoInternal(FileContext->Handle, FileInfo);
}
static NTSTATUS Open(FSP_FILE_SYSTEM *FileSystem,
@@ -191,27 +204,34 @@ static NTSTATUS Open(FSP_FILE_SYSTEM *FileSystem,
{
PTFS *Ptfs = (PTFS *)FileSystem->UserContext;
WCHAR FullPath[FULLPATH_SIZE];
HANDLE Handle;
PTFS_FILE_CONTEXT *FileContext;
if (!ConcatPath(Ptfs, FileName, FullPath))
return STATUS_OBJECT_NAME_INVALID;
Handle = CreateFileW(FullPath,
FileContext = malloc(sizeof *FileContext);
if (0 == FileContext)
return STATUS_INSUFFICIENT_RESOURCES;
FileContext->Handle = CreateFileW(FullPath,
GrantedAccess, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (INVALID_HANDLE_VALUE == Handle)
if (INVALID_HANDLE_VALUE == FileContext->Handle)
{
free(FileContext);
return FspNtStatusFromWin32(GetLastError());
}
*PFileContext = Handle;
*PFileContext = FileContext;
return GetFileInfoInternal(Handle, FileInfo);
return GetFileInfoInternal(FileContext->Handle, FileInfo);
}
static NTSTATUS Overwrite(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, UINT32 FileAttributes, BOOLEAN ReplaceFileAttributes, UINT64 AllocationSize,
FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
FILE_BASIC_INFO BasicInfo = { 0 };
FILE_ALLOCATION_INFO AllocationInfo = { 0 };
FILE_ATTRIBUTE_TAG_INFO AttributeTagInfo;
@@ -248,24 +268,32 @@ static NTSTATUS Overwrite(FSP_FILE_SYSTEM *FileSystem,
static VOID Cleanup(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PWSTR FileName, ULONG Flags)
{
HANDLE Handle = HandleFromContext(FileContext);
if (Flags & FspCleanupDelete)
{
CloseHandle(Handle);
/* this will make all future uses of Handle to fail with STATUS_INVALID_HANDLE */
HandleFromContext(FileContext) = INVALID_HANDLE_VALUE;
}
}
static VOID Close(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
CloseHandle(Handle);
free(FileContext);
}
static NTSTATUS Read(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PVOID Buffer, UINT64 Offset, ULONG Length,
PULONG PBytesTransferred)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
OVERLAPPED Overlapped = { 0 };
Overlapped.Offset = (DWORD)Offset;
@@ -282,7 +310,7 @@ static NTSTATUS Write(FSP_FILE_SYSTEM *FileSystem,
BOOLEAN WriteToEndOfFile, BOOLEAN ConstrainedIo,
PULONG PBytesTransferred, FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
LARGE_INTEGER FileSize;
OVERLAPPED Overlapped = { 0 };
@@ -310,7 +338,7 @@ NTSTATUS Flush(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext,
FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
/* we do not flush the whole volume, so just return SUCCESS */
if (0 == Handle)
@@ -326,7 +354,7 @@ static NTSTATUS GetFileInfo(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext,
FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
return GetFileInfoInternal(Handle, FileInfo);
}
@@ -336,7 +364,7 @@ static NTSTATUS SetBasicInfo(FSP_FILE_SYSTEM *FileSystem,
UINT64 CreationTime, UINT64 LastAccessTime, UINT64 LastWriteTime, UINT64 ChangeTime,
FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
FILE_BASIC_INFO BasicInfo = { 0 };
BasicInfo.FileAttributes = INVALID_FILE_ATTRIBUTES != FileAttributes ? FileAttributes : 0;
@@ -356,7 +384,7 @@ static NTSTATUS SetFileSize(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, UINT64 NewSize, BOOLEAN SetAllocationSize,
FSP_FSCTL_FILE_INFO *FileInfo)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
FILE_ALLOCATION_INFO AllocationInfo;
FILE_END_OF_FILE_INFO EndOfFileInfo;
@@ -394,7 +422,7 @@ static NTSTATUS SetFileSize(FSP_FILE_SYSTEM *FileSystem,
static NTSTATUS CanDelete(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PWSTR FileName)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
FILE_DISPOSITION_INFO DispositionInfo;
DispositionInfo.DeleteFile = TRUE;
@@ -417,7 +445,7 @@ static NTSTATUS GetSecurity(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext,
PSECURITY_DESCRIPTOR SecurityDescriptor, SIZE_T *PSecurityDescriptorSize)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
DWORD SecurityDescriptorSizeNeeded;
if (!GetKernelObjectSecurity(Handle,
@@ -437,7 +465,7 @@ static NTSTATUS SetSecurity(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext,
SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor)
{
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
if (!SetKernelObjectSecurity(Handle, SecurityInformation, ModificationDescriptor))
return FspNtStatusFromWin32(GetLastError());
@@ -451,7 +479,7 @@ static NTSTATUS ReadDirectory(FSP_FILE_SYSTEM *FileSystem,
PULONG PBytesTransferred)
{
PTFS *Ptfs = (PTFS *)FileSystem->UserContext;
HANDLE Handle = FileContext;
HANDLE Handle = HandleFromContext(FileContext);
WCHAR FullPath[FULLPATH_SIZE];
ULONG Length, PatternLength;
HANDLE FindHandle;