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sys,dll: GetDirInfoByName

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This commit is contained in:
Bill Zissimopoulos
2017-09-25 19:46:36 -07:00
parent 3ede1a5c70
commit 34546def3c
4 changed files with 90 additions and 15 deletions
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1
inc/winfsp/fsctl.h
View File

@@ -347,6 +347,7 @@ typedef struct
FSP_FSCTL_TRANSACT_BUF Pattern;
FSP_FSCTL_TRANSACT_BUF Marker;
UINT32 CaseSensitive:1; /* FileName comparisons should be case-sensitive */
UINT32 PatternIsFileName:1; /* Pattern does not contain wildcards */
} QueryDirectory;
struct
{

22
inc/winfsp/winfsp.h
View File

@@ -802,12 +802,32 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
NTSTATUS (*GetStreamInfo)(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PVOID Buffer, ULONG Length,
PULONG PBytesTransferred);
/**
* Get directory information for a single file or directory within a parent directory.
*
* @param FileSystem
* The file system on which this request is posted.
* @param FileContext
* The file context of the parent directory.
* @param FileName
* The name of the file or directory to get information for. This name is relative
* to the parent directory and is a single path component.
* @param DirInfo [out]
* Pointer to a structure that will receive the directory information on successful
* return from this call. This information includes the file name, but also file
* attributes, file times, etc.
* @return
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*GetDirInfoByName)(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PWSTR FileName,
FSP_FSCTL_DIR_INFO *DirInfo);
/*
* This ensures that this interface will always contain 64 function pointers.
* Please update when changing the interface as it is important for future compatibility.
*/
NTSTATUS (*Reserved[40])();
NTSTATUS (*Reserved[39])();
} FSP_FILE_SYSTEM_INTERFACE;
FSP_FSCTL_STATIC_ASSERT(sizeof(FSP_FILE_SYSTEM_INTERFACE) == 64 * sizeof(NTSTATUS (*)()),
"FSP_FILE_SYSTEM_INTERFACE must have 64 entries.");

61
src/dll/fsop.c
View File

@@ -1121,6 +1121,39 @@ FSP_API NTSTATUS FspFileSystemOpSetVolumeInformation(FSP_FILE_SYSTEM *FileSystem
return STATUS_SUCCESS;
}
static NTSTATUS FspFileSystemOpQueryDirectory_GetDirInfoByName(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PWSTR FileName, BOOLEAN HasMarker,
PVOID Buffer, ULONG Length, PULONG PBytesTransferred)
{
NTSTATUS Result;
union
{
FSP_FSCTL_DIR_INFO V;
UINT8 B[sizeof(FSP_FSCTL_DIR_INFO) + 255 * sizeof(WCHAR)];
} DirInfoBuf;
FSP_FSCTL_DIR_INFO *DirInfo = &DirInfoBuf.V;
memset(DirInfo, 0, sizeof *DirInfo);
if (!HasMarker)
{
Result = FileSystem->Interface->GetDirInfoByName(FileSystem,
FileContext, FileName, DirInfo);
if (!NT_SUCCESS(Result))
return Result;
if (FspFileSystemAddDirInfo(DirInfo, Buffer, Length, PBytesTransferred))
FspFileSystemAddDirInfo(0, Buffer, Length, PBytesTransferred);
}
else
{
Result = STATUS_SUCCESS;
FspFileSystemAddDirInfo(0, Buffer, Length, PBytesTransferred);
}
return Result;
}
FSP_API NTSTATUS FspFileSystemOpQueryDirectory(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, FSP_FSCTL_TRANSACT_RSP *Response)
{
@@ -1131,15 +1164,25 @@ FSP_API NTSTATUS FspFileSystemOpQueryDirectory(FSP_FILE_SYSTEM *FileSystem,
return STATUS_INVALID_DEVICE_REQUEST;
BytesTransferred = 0;
Result = FileSystem->Interface->ReadDirectory(FileSystem,
(PVOID)ValOfFileContext(Request->Req.QueryDirectory),
0 != Request->Req.QueryDirectory.Pattern.Size ?
(PWSTR)(Request->Buffer + Request->Req.QueryDirectory.Pattern.Offset) : 0,
0 != Request->Req.QueryDirectory.Marker.Size ?
(PWSTR)(Request->Buffer + Request->Req.QueryDirectory.Marker.Offset) : 0,
(PVOID)Request->Req.QueryDirectory.Address,
Request->Req.QueryDirectory.Length,
&BytesTransferred);
if (0 != FileSystem->Interface->GetDirInfoByName &&
0 != Request->Req.QueryDirectory.Pattern.Size && Request->Req.QueryDirectory.PatternIsFileName)
Result = FspFileSystemOpQueryDirectory_GetDirInfoByName(FileSystem,
(PVOID)ValOfFileContext(Request->Req.QueryDirectory),
(PWSTR)(Request->Buffer + Request->Req.QueryDirectory.Pattern.Offset),
0 != Request->Req.QueryDirectory.Marker.Size,
(PVOID)Request->Req.QueryDirectory.Address,
Request->Req.QueryDirectory.Length,
&BytesTransferred);
else
Result = FileSystem->Interface->ReadDirectory(FileSystem,
(PVOID)ValOfFileContext(Request->Req.QueryDirectory),
0 != Request->Req.QueryDirectory.Pattern.Size ?
(PWSTR)(Request->Buffer + Request->Req.QueryDirectory.Pattern.Offset) : 0,
0 != Request->Req.QueryDirectory.Marker.Size ?
(PWSTR)(Request->Buffer + Request->Req.QueryDirectory.Marker.Offset) : 0,
(PVOID)Request->Req.QueryDirectory.Address,
Request->Req.QueryDirectory.Length,
&BytesTransferred);
if (!NT_SUCCESS(Result))
return Result;

21
src/sys/dirctl.c
View File

@@ -480,6 +480,7 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
PVOID DirInfoBuffer;
ULONG DirInfoSize;
FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
BOOLEAN PassQueryDirectoryPattern, PatternIsFileName;
BOOLEAN Success;
ASSERT(FileNode == FileDesc->FileNode);
@@ -566,10 +567,20 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
}
/* create request */
PassQueryDirectoryPattern = PatternIsFileName = FALSE;
if (FsvolDeviceExtension->VolumeParams.PassQueryDirectoryPattern &&
FspFileDescDirectoryPatternMatchAll != FileDesc->DirectoryPattern.Buffer)
{
PassQueryDirectoryPattern = TRUE;
PatternIsFileName = !FsRtlDoesNameContainWildCards(&FileDesc->DirectoryPattern);
}
else if (!FsRtlDoesNameContainWildCards(&FileDesc->DirectoryPattern))
{
PassQueryDirectoryPattern = TRUE;
PatternIsFileName = TRUE;
}
Result = FspIopCreateRequestEx(Irp, 0,
(FsvolDeviceExtension->VolumeParams.PassQueryDirectoryPattern &&
FspFileDescDirectoryPatternMatchAll != FileDesc->DirectoryPattern.Buffer ?
FileDesc->DirectoryPattern.Length + sizeof(WCHAR) : 0) +
(PassQueryDirectoryPattern ? FileDesc->DirectoryPattern.Length + sizeof(WCHAR) : 0) +
(FsvolDeviceExtension->VolumeParams.MaxComponentLength + 1) * sizeof(WCHAR),
FspFsvolQueryDirectoryRequestFini, &Request);
if (!NT_SUCCESS(Result))
@@ -584,9 +595,9 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
Request->Req.QueryDirectory.Length = SystemBufferLength;
Request->Req.QueryDirectory.CaseSensitive = FileDesc->CaseSensitive;
if (FsvolDeviceExtension->VolumeParams.PassQueryDirectoryPattern &&
FspFileDescDirectoryPatternMatchAll != FileDesc->DirectoryPattern.Buffer)
if (PassQueryDirectoryPattern)
{
Request->Req.QueryDirectory.PatternIsFileName = PatternIsFileName;
Request->Req.QueryDirectory.Pattern.Offset =
Request->FileName.Size;
Request->Req.QueryDirectory.Pattern.Size =