Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers...

[reactos.git] / drivers / filesystems / npfs / seinfo.c

diff --git a/drivers/filesystems/npfs/seinfo.c b/drivers/filesystems/npfs/seinfo.c
new file mode 100644 (file)
index 0000000..1678ef2
--- /dev/null
+++ b/drivers/filesystems/npfs/seinfo.c
@@ -0,0 +1,148 @@
+/*
+ * 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 */