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tst: memfs: implement GetStreamInfo

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This commit is contained in:
Bill Zissimopoulos 2016-09-28 16:17:50 -07:00
parent cc408b71e1
commit fb9b798d3d
1 changed files with 80 additions and 0 deletions
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80
tst/memfs/memfs.cpp
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@ -266,6 +266,23 @@ BOOLEAN MemfsFileNodeMapEnumerateChildren(MEMFS_FILE_NODE_MAP *FileNodeMap, MEMF
return TRUE;
}
static inline
BOOLEAN MemfsFileNodeMapEnumerateNamedStreams(MEMFS_FILE_NODE_MAP *FileNodeMap, MEMFS_FILE_NODE *FileNode,
BOOLEAN (*EnumFn)(MEMFS_FILE_NODE *, PVOID), PVOID Context)
{
MEMFS_FILE_NODE_MAP::iterator iter = FileNodeMap->upper_bound(FileNode->FileName);
for (; FileNodeMap->end() != iter; ++iter)
{
if (!MemfsFileNameHasPrefix(iter->second->FileName, FileNode->FileName, FALSE))
break;
if (L':' != iter->second->FileName[wcslen(FileNode->FileName)])
break;
if (!EnumFn(iter->second, Context))
return FALSE;
}
return TRUE;
}
static inline
BOOLEAN MemfsFileNodeMapEnumerateDescendants(MEMFS_FILE_NODE_MAP *FileNodeMap, MEMFS_FILE_NODE *FileNode,
BOOLEAN (*EnumFn)(MEMFS_FILE_NODE *, PVOID), PVOID Context)
@ -1072,6 +1089,67 @@ static NTSTATUS DeleteReparsePoint(FSP_FILE_SYSTEM *FileSystem,
return STATUS_SUCCESS;
}
typedef struct _MEMFS_GET_STREAM_INFO_CONTEXT
{
PVOID Buffer;
ULONG Length;
PULONG PBytesTransferred;
} MEMFS_GET_STREAM_INFO_CONTEXT;
static BOOLEAN AddStreamInfo(MEMFS_FILE_NODE *FileNode,
PVOID Buffer, ULONG Length, PULONG PBytesTransferred)
{
UINT8 StreamInfoBuf[sizeof(FSP_FSCTL_STREAM_INFO) + sizeof FileNode->FileName];
FSP_FSCTL_STREAM_INFO *StreamInfo = (FSP_FSCTL_STREAM_INFO *)StreamInfoBuf;
PWSTR StreamName;
StreamName = wcschr(FileNode->FileName, L':');
if (0 != StreamName)
StreamName++;
else
StreamName = L"";
StreamInfo->Size = (UINT16)(sizeof(FSP_FSCTL_STREAM_INFO) + wcslen(StreamName) * sizeof(WCHAR));
StreamInfo->StreamSize = FileNode->FileInfo.FileSize;
StreamInfo->StreamAllocationSize = FileNode->FileInfo.AllocationSize;
memcpy(StreamInfo->StreamNameBuf, StreamName, StreamInfo->Size - sizeof(FSP_FSCTL_STREAM_INFO));
return FspFileSystemAddStreamInfo(StreamInfo, Buffer, Length, PBytesTransferred);
}
static BOOLEAN GetStreamInfoEnumFn(MEMFS_FILE_NODE *FileNode, PVOID Context0)
{
MEMFS_GET_STREAM_INFO_CONTEXT *Context = (MEMFS_GET_STREAM_INFO_CONTEXT *)Context0;
return AddStreamInfo(FileNode,
Context->Buffer, Context->Length, Context->PBytesTransferred);
}
static NTSTATUS GetStreamInfo(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode0, PVOID Buffer, ULONG Length,
PULONG PBytesTransferred)
{
MEMFS *Memfs = (MEMFS *)FileSystem->UserContext;
MEMFS_FILE_NODE *FileNode = (MEMFS_FILE_NODE *)FileNode0;
MEMFS_GET_STREAM_INFO_CONTEXT Context;
Context.Buffer = Buffer;
Context.Length = Length;
Context.PBytesTransferred = PBytesTransferred;
if (0 == (FileNode->FileInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
!AddStreamInfo(FileNode, Buffer, Length, PBytesTransferred))
return STATUS_SUCCESS;
if (MemfsFileNodeMapEnumerateNamedStreams(Memfs->FileNodeMap, FileNode, GetStreamInfoEnumFn, &Context))
FspFileSystemAddStreamInfo(0, Buffer, Length, PBytesTransferred);
/* ???: how to handle out of response buffer condition? */
return STATUS_SUCCESS;
}
static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
{
GetVolumeInfo,
@ -1097,6 +1175,7 @@ static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
GetReparsePoint,
SetReparsePoint,
DeleteReparsePoint,
GetStreamInfo,
};
NTSTATUS MemfsCreate(
@ -1159,6 +1238,7 @@ NTSTATUS MemfsCreate(
VolumeParams.PersistentAcls = 1;
VolumeParams.ReparsePoints = 1;
VolumeParams.ReparsePointsAccessCheck = 0;
VolumeParams.NamedStreams = 1;
VolumeParams.PostCleanupOnDeleteOnly = 1;
if (0 != VolumePrefix)
wcscpy_s(VolumeParams.Prefix, sizeof VolumeParams.Prefix / sizeof(WCHAR), VolumePrefix);