reactos/drivers/filesystems/npfs/seinfo.c

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/*
* PROJECT: ReactOS Named Pipe FileSystem
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: drivers/filesystems/npfs/seinfo.c
* PURPOSE: Pipes Security Information
* PROGRAMMERS: ReactOS Portable Systems Group
*/
/* INCLUDES *******************************************************************/
#include "npfs.h"
// File ID number for NPFS bugchecking support
#define NPFS_BUGCHECK_FILE_ID (NPFS_BUGCHECK_SEINFO)
/* FUNCTIONS ******************************************************************/
NTSTATUS
NTAPI
NpCommonQuerySecurityInfo(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NODE_TYPE_CODE NodeTypeCode;
PIO_STACK_LOCATION IoStack;
NTSTATUS Status;
PNP_FCB Fcb;
PNP_CCB Ccb;
ULONG NamedPipeEnd;
PAGED_CODE();
IoStack = IoGetCurrentIrpStackLocation(Irp);
NodeTypeCode = NpDecodeFileObject(IoStack->FileObject,
(PVOID*)&Fcb,
&Ccb,
&NamedPipeEnd);
if (!NodeTypeCode) return STATUS_PIPE_DISCONNECTED;
if (NodeTypeCode != NPFS_NTC_CCB) return STATUS_INVALID_PARAMETER;
Status = SeQuerySecurityDescriptorInfo(&IoStack->Parameters.QuerySecurity.SecurityInformation,
Irp->UserBuffer,
&IoStack->Parameters.QuerySecurity.Length,
&Fcb->SecurityDescriptor);
if (Status == STATUS_BUFFER_TOO_SMALL)
{
Irp->IoStatus.Information = IoStack->Parameters.QuerySecurity.Length;
Status = STATUS_BUFFER_OVERFLOW;
}
return Status;
}
NTSTATUS
NTAPI
NpCommonSetSecurityInfo(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NODE_TYPE_CODE NodeTypeCode;
PIO_STACK_LOCATION IoStack;
NTSTATUS Status;
PNP_FCB Fcb;
PNP_CCB Ccb;
ULONG NamedPipeEnd;
PSECURITY_DESCRIPTOR OldSecurityDescriptor;
PSECURITY_DESCRIPTOR TempSecurityDescriptor;
PSECURITY_DESCRIPTOR NewSecurityDescriptor;
PAGED_CODE();
IoStack = IoGetCurrentIrpStackLocation(Irp);
NodeTypeCode = NpDecodeFileObject(IoStack->FileObject,
(PVOID*)&Fcb,
&Ccb,
&NamedPipeEnd);
if (!NodeTypeCode) return STATUS_PIPE_DISCONNECTED;
if (NodeTypeCode != NPFS_NTC_CCB) return STATUS_INVALID_PARAMETER;
OldSecurityDescriptor = TempSecurityDescriptor = Fcb->SecurityDescriptor;
Status = SeSetSecurityDescriptorInfo(NULL,
&IoStack->Parameters.SetSecurity.SecurityInformation,
IoStack->Parameters.SetSecurity.SecurityDescriptor,
&TempSecurityDescriptor,
TRUE,
IoGetFileObjectGenericMapping());
if (!NT_SUCCESS(Status)) return Status;
Status = ObLogSecurityDescriptor(TempSecurityDescriptor, &NewSecurityDescriptor, 1);
ASSERT(TempSecurityDescriptor != OldSecurityDescriptor);
ExFreePoolWithTag(TempSecurityDescriptor, 0);
if (!NT_SUCCESS(Status)) return Status;
Fcb->SecurityDescriptor = NewSecurityDescriptor;
ObDereferenceSecurityDescriptor(OldSecurityDescriptor, 1);
return Status;
}
NTSTATUS
NTAPI
NpFsdQuerySecurityInfo(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NTSTATUS Status;
PAGED_CODE();
FsRtlEnterFileSystem();
NpAcquireExclusiveVcb();
Status = NpCommonQuerySecurityInfo(DeviceObject, Irp);
NpReleaseVcb();
FsRtlExitFileSystem();
if (Status != STATUS_PENDING)
{
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
}
return Status;
}
NTSTATUS
NTAPI
NpFsdSetSecurityInfo(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NTSTATUS Status;
PAGED_CODE();
FsRtlEnterFileSystem();
NpAcquireExclusiveVcb();
Status = NpCommonSetSecurityInfo(DeviceObject, Irp);
NpReleaseVcb();
FsRtlExitFileSystem();
if (Status != STATUS_PENDING)
{
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
}
return Status;
}
/* EOF */