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sys,dll: reparse point implementation: DeleteReparsePoint

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This commit is contained in:
Bill Zissimopoulos
2016-08-26 07:43:25 -07:00
parent b88b2ec51d
commit 80e07cead6
6 changed files with 297 additions and 73 deletions
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54
tst/memfs/memfs.cpp
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@ -1007,25 +1007,66 @@ static NTSTATUS SetReparsePoint(FSP_FILE_SYSTEM *FileSystem,
PVOID FileNode0,
PWSTR FileName, PVOID Buffer, SIZE_T Size)
{
MEMFS *Memfs = (MEMFS *)FileSystem->UserContext;
MEMFS_FILE_NODE *FileNode = (MEMFS_FILE_NODE *)FileNode0;
PVOID ReparseData;
NTSTATUS Result;
if (0 == (FileNode->FileInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
return STATUS_NOT_A_REPARSE_POINT;
if (MemfsFileNodeMapHasChild(Memfs->FileNodeMap, FileNode))
return STATUS_DIRECTORY_NOT_EMPTY;
if (0 != FileNode->ReparseData)
{
Result = FspFileSystemCanReplaceReparsePoint(
FileNode->ReparseData, FileNode->ReparseDataSize,
Buffer, Size);
if (!NT_SUCCESS(Result))
return Result;
}
ReparseData = realloc(FileNode->ReparseData, Size);
if (0 == ReparseData)
if (0 == ReparseData && 0 != Size)
return STATUS_INSUFFICIENT_RESOURCES;
/* the first field in a reparse buffer is the reparse tag */
FileNode->FileInfo.ReparseTag = 0 != Buffer ? *(PULONG)Buffer : 0;
FileNode->FileInfo.FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
FileNode->FileInfo.ReparseTag = *(PULONG)Buffer;
/* the first field in a reparse buffer is the reparse tag */
FileNode->ReparseDataSize = Size;
FileNode->ReparseData = ReparseData;
memcpy(FileNode->ReparseData, Buffer, Size);
return STATUS_SUCCESS;
}
static NTSTATUS DeleteReparsePoint(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode0,
PWSTR FileName, PVOID Buffer, SIZE_T Size)
{
MEMFS_FILE_NODE *FileNode = (MEMFS_FILE_NODE *)FileNode0;
NTSTATUS Result;
if (0 != FileNode->ReparseData)
{
Result = FspFileSystemCanReplaceReparsePoint(
FileNode->ReparseData, FileNode->ReparseDataSize,
Buffer, Size);
if (!NT_SUCCESS(Result))
return Result;
}
else
return STATUS_NOT_A_REPARSE_POINT;
free(FileNode->ReparseData);
FileNode->FileInfo.FileAttributes &= ~FILE_ATTRIBUTE_REPARSE_POINT;
FileNode->FileInfo.ReparseTag = 0;
FileNode->ReparseDataSize = 0;
FileNode->ReparseData = 0;
return STATUS_SUCCESS;
}
static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
{
GetVolumeInfo,
@ -1050,6 +1091,7 @@ static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
ResolveReparsePoints,
GetReparsePoint,
SetReparsePoint,
DeleteReparsePoint,
};
NTSTATUS MemfsCreate(