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memfs: MemfsCreate: RootSddl

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This commit is contained in:
Bill Zissimopoulos
2016-04-09 12:02:18 -07:00
parent 25911a808c
commit d1b004dc29
4 changed files with 51 additions and 7 deletions
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37
tst/memfs/memfs.cpp
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@ -6,6 +6,7 @@
#undef _DEBUG
#include "memfs.h"
#include <sddl.h>
#include <map>
#include <cassert>
@ -836,9 +837,13 @@ static VOID MemfsLeaveOperation(FSP_FILE_SYSTEM *FileSystem,
LeaveCriticalSection(&Memfs->Lock);
}
NTSTATUS MemfsCreate(ULONG Flags, ULONG FileInfoTimeout,
ULONG MaxFileNodes, ULONG MaxFileSize,
NTSTATUS MemfsCreate(
ULONG Flags,
ULONG FileInfoTimeout,
ULONG MaxFileNodes,
ULONG MaxFileSize,
PWSTR VolumePrefix,
PWSTR RootSddl,
MEMFS **PMemfs)
{
NTSTATUS Result;
@ -848,13 +853,24 @@ NTSTATUS MemfsCreate(ULONG Flags, ULONG FileInfoTimeout,
UINT64 AllocationUnit;
MEMFS *Memfs;
MEMFS_FILE_NODE *RootNode;
PSECURITY_DESCRIPTOR RootSecurity;
ULONG RootSecuritySize;
BOOLEAN Inserted;
*PMemfs = 0;
if (0 == RootSddl)
RootSddl = L"O:BAG:BAD:P(A;;FA;;;SY)(A;;FA;;;BA)(A;;FA;;;WD)";
if (!ConvertStringSecurityDescriptorToSecurityDescriptorW(RootSddl, SDDL_REVISION_1,
&RootSecurity, &RootSecuritySize))
return FspNtStatusFromWin32(GetLastError());
Memfs = (MEMFS *)malloc(sizeof *Memfs);
if (0 == Memfs)
{
LocalFree(RootSecurity);
return STATUS_INSUFFICIENT_RESOURCES;
}
memset(Memfs, 0, sizeof *Memfs);
Memfs->MaxFileNodes = MaxFileNodes;
@ -865,6 +881,7 @@ NTSTATUS MemfsCreate(ULONG Flags, ULONG FileInfoTimeout,
if (!NT_SUCCESS(Result))
{
free(Memfs);
LocalFree(RootSecurity);
return Result;
}
@ -886,6 +903,7 @@ NTSTATUS MemfsCreate(ULONG Flags, ULONG FileInfoTimeout,
{
MemfsFileNodeMapDelete(Memfs->FileNodeMap);
free(Memfs);
LocalFree(RootSecurity);
return Result;
}
@ -907,19 +925,34 @@ NTSTATUS MemfsCreate(ULONG Flags, ULONG FileInfoTimeout,
if (!NT_SUCCESS(Result))
{
MemfsDelete(Memfs);
LocalFree(RootSecurity);
return Result;
}
RootNode->FileInfo.FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
RootNode->FileSecurity = malloc(RootSecuritySize);
if (0 == RootNode->FileSecurity)
{
MemfsFileNodeDelete(RootNode);
MemfsDelete(Memfs);
LocalFree(RootSecurity);
return STATUS_INSUFFICIENT_RESOURCES;
}
RootNode->FileSecuritySize = RootSecuritySize;
memcpy(RootNode->FileSecurity, RootSecurity, RootSecuritySize);
Result = MemfsFileNodeMapInsert(Memfs->FileNodeMap, RootNode, &Inserted);
if (!NT_SUCCESS(Result))
{
MemfsFileNodeDelete(RootNode);
MemfsDelete(Memfs);
LocalFree(RootSecurity);
return Result;
}
LocalFree(RootSecurity);
*PMemfs = Memfs;
return STATUS_SUCCESS;