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sys: FileStatLxInformation and friends

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This commit is contained in:
Bill Zissimopoulos
2019-04-15 15:04:31 -07:00
parent 04b3675f12
commit ce83619728
7 changed files with 497 additions and 7 deletions
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231
src/sys/fileinfo.c
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@ -45,6 +45,15 @@ static NTSTATUS FspFsvolQueryPositionInformation(PFILE_OBJECT FileObject,
static NTSTATUS FspFsvolQueryStandardInformation(PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd,
const FSP_FSCTL_FILE_INFO *FileInfo);
static NTSTATUS FspFsvolQueryStatInformation(PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd,
const FSP_FSCTL_FILE_INFO *FileInfo);
static NTSTATUS FspFsvolQueryStatLxInformation(PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd,
const FSP_FSCTL_FILE_INFO *FileInfo);
static NTSTATUS FspFsvolQueryStatLxInformationEa(
PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd);
static NTSTATUS FspFsvolQueryStreamInformationCopy(
FSP_FSCTL_STREAM_INFO *StreamInfoBuffer, ULONG StreamInfoBufferSize,
PVOID DestBuf, PULONG PDestLen);
@ -97,6 +106,9 @@ FAST_IO_QUERY_OPEN FspFastIoQueryOpen;
#pragma alloc_text(PAGE, FspFsvolQueryNetworkOpenInformation)
#pragma alloc_text(PAGE, FspFsvolQueryPositionInformation)
#pragma alloc_text(PAGE, FspFsvolQueryStandardInformation)
#pragma alloc_text(PAGE, FspFsvolQueryStatInformation)
#pragma alloc_text(PAGE, FspFsvolQueryStatLxInformation)
#pragma alloc_text(PAGE, FspFsvolQueryStatLxInformationEa)
#pragma alloc_text(PAGE, FspFsvolQueryStreamInformationCopy)
#pragma alloc_text(PAGE, FspFsvolQueryStreamInformation)
#pragma alloc_text(PAGE, FspFsvolQueryStreamInformationSuccess)
@ -417,6 +429,195 @@ static NTSTATUS FspFsvolQueryStandardInformation(PFILE_OBJECT FileObject,
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolQueryStatInformation(PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd,
const FSP_FSCTL_FILE_INFO *FileInfo)
{
PAGED_CODE();
PFILE_STAT_INFORMATION Info = (PFILE_STAT_INFORMATION)*PBuffer;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
ASSERT(FileNode == FileDesc->FileNode);
if (0 == FileInfo)
{
if ((PVOID)(Info + 1) > BufferEnd)
return STATUS_BUFFER_TOO_SMALL;
return STATUS_SUCCESS;
}
Info->FileId.QuadPart = FileNode->IndexNumber;
Info->CreationTime.QuadPart = FileInfo->CreationTime;
Info->LastAccessTime.QuadPart = FileInfo->LastAccessTime;
Info->LastWriteTime.QuadPart = FileInfo->LastWriteTime;
Info->ChangeTime.QuadPart = FileInfo->ChangeTime;
Info->AllocationSize.QuadPart = FileInfo->AllocationSize;
Info->EndOfFile.QuadPart = FileInfo->FileSize;
Info->FileAttributes = 0 != FileInfo->FileAttributes ?
FileInfo->FileAttributes : FILE_ATTRIBUTE_NORMAL;
Info->ReparseTag = FileInfo->ReparseTag;
Info->NumberOfLinks = 1;
Info->EffectiveAccess = FileDesc->GrantedAccess;
*PBuffer = (PVOID)(Info + 1);
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolQueryStatLxInformation(PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd,
const FSP_FSCTL_FILE_INFO *FileInfo)
{
PAGED_CODE();
PFILE_STAT_LX_INFORMATION Info = (PFILE_STAT_LX_INFORMATION)*PBuffer;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
ASSERT(FileNode == FileDesc->FileNode);
if (0 == FileInfo)
{
if ((PVOID)(Info + 1) > BufferEnd)
return STATUS_BUFFER_TOO_SMALL;
return STATUS_SUCCESS;
}
Info->FileId.QuadPart = FileNode->IndexNumber;
Info->CreationTime.QuadPart = FileInfo->CreationTime;
Info->LastAccessTime.QuadPart = FileInfo->LastAccessTime;
Info->LastWriteTime.QuadPart = FileInfo->LastWriteTime;
Info->ChangeTime.QuadPart = FileInfo->ChangeTime;
Info->AllocationSize.QuadPart = FileInfo->AllocationSize;
Info->EndOfFile.QuadPart = FileInfo->FileSize;
Info->FileAttributes = 0 != FileInfo->FileAttributes ?
FileInfo->FileAttributes : FILE_ATTRIBUTE_NORMAL;
Info->ReparseTag = FileInfo->ReparseTag;
Info->NumberOfLinks = 1;
Info->EffectiveAccess = FileDesc->GrantedAccess;
*PBuffer = (PVOID)(Info + 1);
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolQueryStatLxInformationEa(
PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
PVOID *PBuffer, PVOID BufferEnd)
{
#define ADD_GET_EA(Name, End) \
GetEa->NextEntryOffset = (ULONG)(End ? 0 :\
FSP_FSCTL_ALIGN_UP( \
FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + sizeof("" Name),\
sizeof(ULONG))); \
GetEa->EaNameLength = (UCHAR)(sizeof("" Name) - 1);\
RtlCopyMemory(GetEa->EaName, "" Name, sizeof("" Name));\
GetEaLength = (ULONG)((PUINT8)GetEa - (PUINT8)&GetEaBuf.V +\
FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + sizeof("" Name));\
GetEa = (PVOID)((PUINT8)GetEa + GetEa->NextEntryOffset);
#define EQUAL_EA_NAME(Name) \
CmpName.Length = \
CmpName.MaximumLength = sizeof("" Name) - 1,\
CmpName.Buffer = "" Name, \
RtlEqualString(&CmpName, &EaName, TRUE/* always case-insensitive */)
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
PFILE_STAT_LX_INFORMATION Info = (PFILE_STAT_LX_INFORMATION)*PBuffer;
union
{
FILE_GET_EA_INFORMATION V;
UINT8 B[256];
} GetEaBuf;
PFILE_GET_EA_INFORMATION GetEa = &GetEaBuf.V;
ULONG GetEaLength = 0;
union
{
FILE_FULL_EA_INFORMATION V;
UINT8 B[256];
} EaBuf;
ULONG EaLength = sizeof EaBuf;
STRING EaName, CmpName;
NTSTATUS Result;
Info->LxFlags = 0;
Info->LxUid = 0;
Info->LxGid = 0;
Info->LxMode = 0;
Info->LxDeviceIdMajor = 0;
Info->LxDeviceIdMinor = 0;
if (!FsvolDeviceExtension->VolumeParams.ExtendedAttributes)
return STATUS_SUCCESS;
ADD_GET_EA("$LXUID", 0);
ADD_GET_EA("$LXGID", 0);
ADD_GET_EA("$LXMOD", 0);
ADD_GET_EA("$LXDEV", 1);
Result = FspSendQueryEaIrp(FsvolDeviceObject/* bypass filters */, FileObject,
&GetEaBuf.V, GetEaLength,
&EaBuf.V, &EaLength);
if (!NT_SUCCESS(Result))
return Result;
for (PFILE_FULL_EA_INFORMATION Ea = &EaBuf.V, EaEnd = (PVOID)((PUINT8)Ea + EaLength);
EaEnd > Ea; Ea = FSP_NEXT_EA(Ea, EaEnd))
{
EaName.Length =
EaName.MaximumLength = Ea->EaNameLength,
EaName.Buffer = Ea->EaName;
if (EQUAL_EA_NAME("$LXUID"))
{
if (sizeof(ULONG) == Ea->EaValueLength)
{
Info->LxFlags |= 0x1/*LX_FILE_METADATA_HAS_UID*/;
Info->LxUid = *(PULONG)(Ea->EaName + sizeof "$LXUID");
}
}
else
if (EQUAL_EA_NAME("$LXGID"))
{
if (sizeof(ULONG) == Ea->EaValueLength)
{
Info->LxFlags |= 0x2/*LX_FILE_METADATA_HAS_GID*/;
Info->LxGid = *(PULONG)(Ea->EaName + sizeof "$LXGID");
}
}
else
if (EQUAL_EA_NAME("$LXMOD"))
{
if (sizeof(ULONG) == Ea->EaValueLength)
{
Info->LxFlags |= 0x4/*LX_FILE_METADATA_HAS_MODE*/;
Info->LxMode = *(PULONG)(Ea->EaName + sizeof "$LXMOD");
}
}
else
if (EQUAL_EA_NAME("$LXDEV"))
{
if (sizeof(UINT64) == Ea->EaValueLength)
{
Info->LxFlags |= 0x8/*LX_FILE_METADATA_HAS_DEVICE_ID*/;
UINT64 Dev = *(PUINT64)(Ea->EaName + sizeof "$LXDEV");
Info->LxDeviceIdMajor = (Dev >> 32) & 0xffffffff;
Info->LxDeviceIdMinor = Dev & 0xffffffff;
}
}
}
return STATUS_SUCCESS;
#undef EQUAL_EA_NAME
#undef ADD_GET_EA
}
static NTSTATUS FspFsvolQueryStreamInformationCopy(
FSP_FSCTL_STREAM_INFO *StreamInfo, ULONG StreamInfoSize,
PVOID DestBuf, PULONG PDestLen)
@ -720,6 +921,12 @@ static NTSTATUS FspFsvolQueryInformation(
case FileStandardInformation:
Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, 0);
break;
case FileStatInformation:
Result = FspFsvolQueryStatInformation(FileObject, &Buffer, BufferEnd, 0);
break;
case 70/*FileStatLxInformation*/:
Result = FspFsvolQueryStatLxInformation(FileObject, &Buffer, BufferEnd, 0);
break;
default:
Result = STATUS_INVALID_PARAMETER;
return Result;
@ -729,6 +936,18 @@ static NTSTATUS FspFsvolQueryInformation(
return Result;
FspFileNodeAcquireShared(FileNode, Main);
if (70/*FileStatLxInformation*/ == FileInformationClass)
{
Result = FspFsvolQueryStatLxInformationEa(
FsvolDeviceObject, FileObject, &Buffer, BufferEnd);
if (!NT_SUCCESS(Result))
{
FspFileNodeRelease(FileNode, Main);
return Result;
}
}
if (FspFileNodeTryGetFileInfo(FileNode, &FileInfoBuf))
{
FspFileNodeRelease(FileNode, Main);
@ -755,6 +974,12 @@ static NTSTATUS FspFsvolQueryInformation(
case FileStandardInformation:
Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
break;
case FileStatInformation:
Result = FspFsvolQueryStatInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
break;
case 70/*FileStatLxInformation*/:
Result = FspFsvolQueryStatLxInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
break;
default:
ASSERT(0);
Result = STATUS_INVALID_PARAMETER;
@ -865,6 +1090,12 @@ NTSTATUS FspFsvolQueryInformationComplete(
case FileStandardInformation:
Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, FileInfo);
break;
case FileStatInformation:
Result = FspFsvolQueryStatInformation(FileObject, &Buffer, BufferEnd, FileInfo);
break;
case 70/*FileStatLxInformation*/:
Result = FspFsvolQueryStatLxInformation(FileObject, &Buffer, BufferEnd, FileInfo);
break;
default:
ASSERT(0);
Result = STATUS_INVALID_PARAMETER;