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sys, dll: extended attributes: checkpoint

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This commit is contained in:
Bill Zissimopoulos
2019-03-13 14:29:49 -07:00
parent 778f5f70dc
commit a811cd2cf8
12 changed files with 931 additions and 46 deletions
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47
src/sys/create.c
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@ -278,7 +278,7 @@ static NTSTATUS FspFsvolCreateNoLock(
ACCESS_MASK GrantedAccess = AccessState->PreviouslyGrantedAccess;
USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
//ULONG EaLength = IrpSp->Parameters.Create.EaLength;
ULONG EaLength = IrpSp->Parameters.Create.EaLength;
ULONG Flags = IrpSp->Flags;
KPROCESSOR_MODE RequestorMode =
FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
@ -302,9 +302,23 @@ static NTSTATUS FspFsvolCreateNoLock(
if (FlagOn(CreateOptions, FILE_OPEN_BY_FILE_ID))
return STATUS_NOT_IMPLEMENTED;
/* no EA support currently */
/* was an EA buffer specified? */
if (0 != EaBuffer)
return STATUS_EAS_NOT_SUPPORTED;
{
/* does the file system support EA? */
if (FsvolDeviceExtension->VolumeParams.ExtendedAttributes)
return STATUS_EAS_NOT_SUPPORTED;
/* do we need EA knowledge? */
if (FlagOn(CreateOptions, FILE_NO_EA_KNOWLEDGE))
return STATUS_ACCESS_DENIED;
/* is the EA buffer valid? */
Irp->IoStatus.Information = 0;
Result = IoCheckEaBufferValidity(EaBuffer, EaLength, (PULONG)&Irp->IoStatus.Information);
if (!NT_SUCCESS(Result))
return Result;
}
/* cannot open a paging file */
if (FlagOn(Flags, SL_OPEN_PAGING_FILE))
@ -541,6 +555,10 @@ static NTSTATUS FspFsvolCreateNoLock(
SecurityDescriptorSize = 0;
FileAttributes = 0;
/* cannot set EA on named stream */
EaBuffer = 0;
EaLength = 0;
/* remember the main file node */
ASSERT(0 == FileNode->MainFileNode);
FileNode->MainFileNode = FileDesc->MainFileObject->FsContext;
@ -558,7 +576,9 @@ static NTSTATUS FspFsvolCreateNoLock(
}
/* create the user-mode file system request */
Result = FspIopCreateRequestEx(Irp, &FileNode->FileName, SecurityDescriptorSize,
Result = FspIopCreateRequestEx(Irp, &FileNode->FileName,
0 != EaBuffer ?
FSP_FSCTL_DEFAULT_ALIGN_UP(SecurityDescriptorSize) + EaLength : SecurityDescriptorSize,
FspFsvolCreateRequestFini, &Request);
if (!NT_SUCCESS(Result))
{
@ -584,19 +604,22 @@ static NTSTATUS FspFsvolCreateNoLock(
FspIopRequestContext(Request, RequestFileDesc) = FileDesc;
/* populate the Create request */
#define NEXTOFS(B) ((B).Offset + FSP_FSCTL_DEFAULT_ALIGN_UP((B).Size))
Request->Kind = FspFsctlTransactCreateKind;
Request->Req.Create.CreateOptions = CreateOptions;
Request->Req.Create.FileAttributes = FileAttributes;
Request->Req.Create.SecurityDescriptor.Offset = 0 == SecurityDescriptorSize ? 0 :
FSP_FSCTL_DEFAULT_ALIGN_UP(Request->FileName.Size);
Request->Req.Create.SecurityDescriptor.Offset = 0 != SecurityDescriptorSize ?
NEXTOFS(Request->FileName) : 0;
Request->Req.Create.SecurityDescriptor.Size = (UINT16)SecurityDescriptorSize;
Request->Req.Create.AllocationSize = AllocationSize;
Request->Req.Create.AccessToken = 0;
Request->Req.Create.DesiredAccess = DesiredAccess;
Request->Req.Create.GrantedAccess = GrantedAccess;
Request->Req.Create.ShareAccess = ShareAccess;
Request->Req.Create.Ea.Offset = 0;
Request->Req.Create.Ea.Size = 0;
Request->Req.Create.Ea.Offset = 0 != EaBuffer ?
(0 != Request->Req.Create.SecurityDescriptor.Offset ?
NEXTOFS(Request->Req.Create.SecurityDescriptor) : NEXTOFS(Request->FileName)) : 0;
Request->Req.Create.Ea.Size = 0 != EaBuffer ? (UINT16)EaLength : 0;
Request->Req.Create.UserMode = UserMode == RequestorMode;
Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege;
Request->Req.Create.HasBackupPrivilege = HasBackupPrivilege;
@ -605,6 +628,7 @@ static NTSTATUS FspFsvolCreateNoLock(
Request->Req.Create.CaseSensitive = CaseSensitive;
Request->Req.Create.HasTrailingBackslash = HasTrailingBackslash;
Request->Req.Create.NamedStream = MainFileName.Length;
#undef APPEND
Request->Req.Create.AcceptsSecurityDescriptor = 0 == Request->Req.Create.NamedStream &&
!!FsvolDeviceExtension->VolumeParams.AllowOpenInKernelMode;
@ -618,6 +642,11 @@ static NTSTATUS FspFsvolCreateNoLock(
RtlCopyMemory(Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset,
SecurityDescriptor, SecurityDescriptorSize);
/* copy the EA buffer (if any) into the request */
if (0 != EaBuffer)
RtlCopyMemory(Request->Buffer + Request->Req.Create.Ea.Offset,
EaBuffer, EaLength);
/* fix FileNode->FileName if we are doing SL_OPEN_TARGET_DIRECTORY */
if (Request->Req.Create.OpenTargetDirectory)
{
@ -1081,6 +1110,7 @@ NTSTATUS FspFsvolCreateComplete(
}
PVOID RequestDeviceObjectValue = FspIopRequestContext(Request, RequestDeviceObject);
FSP_FSCTL_TRANSACT_BUF Ea = Request->Req.Create.Ea;
/* disassociate the FileDesc momentarily from the Request */
FspIopRequestContext(Request, RequestDeviceObject) = 0;
@ -1101,6 +1131,7 @@ NTSTATUS FspFsvolCreateComplete(
Request->Req.Overwrite.FileAttributes = FileAttributes;
Request->Req.Overwrite.AllocationSize = AllocationSize;
Request->Req.Overwrite.Supersede = FILE_SUPERSEDED == Response->IoStatus.Information;
Request->Req.Overwrite.Ea = Ea;
/*
* Post it as BestEffort.