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