Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

2025-08-03 14:45:53 +00:00 · 2017-10-03 07:45:34 +00:00 · 2017-10-03 07:45:34 +00:00 · c2c66aff7d
commit c2c66aff7d
parent b94e2d8ca0
24198 changed files with 0 additions and 37285 deletions
--- a/drivers/filesystems/msfs/finfo.c
+++ b/drivers/filesystems/msfs/finfo.c
@ -0,0 +1,196 @@
+/*
+ * COPYRIGHT:  See COPYING in the top level directory
+ * PROJECT:    ReactOS kernel
+ * FILE:       drivers/filesystems/msfs/finfo.c
+ * PURPOSE:    Mailslot filesystem
+ * PROGRAMMER: Eric Kohl
+ */
+
+/* INCLUDES ******************************************************************/
+
+#include "msfs.h"
+
+#define NDEBUG
+#include <debug.h>
+
+#undef MAILSLOT_NO_MESSAGE
+#undef MAILSLOT_WAIT_FOREVER
+#define MAILSLOT_NO_MESSAGE   MAXULONG
+#define MAILSLOT_WAIT_FOREVER MAXULONG
+
+/* FUNCTIONS *****************************************************************/
+
+static NTSTATUS
+MsfsQueryMailslotInformation(PMSFS_FCB Fcb,
+                             PFILE_MAILSLOT_QUERY_INFORMATION Buffer,
+                             PULONG BufferLength)
+{
+    KIRQL oldIrql;
+
+    if (*BufferLength < sizeof(FILE_MAILSLOT_QUERY_INFORMATION))
+        return STATUS_BUFFER_OVERFLOW;
+
+    Buffer->MaximumMessageSize = Fcb->MaxMessageSize;
+    Buffer->ReadTimeout = Fcb->TimeOut;
+
+    KeAcquireSpinLock(&Fcb->MessageListLock, &oldIrql);
+    Buffer->MessagesAvailable = Fcb->MessageCount;
+    if (Fcb->MessageCount == 0)
+    {
+        Buffer->NextMessageSize = MAILSLOT_NO_MESSAGE;
+    }
+    else
+    {
+        PMSFS_MESSAGE Message = CONTAINING_RECORD(Fcb->MessageListHead.Flink,
+                                                  MSFS_MESSAGE,
+                                                  MessageListEntry);
+        Buffer->NextMessageSize = Message->Size;
+    }
+    KeReleaseSpinLock(&Fcb->MessageListLock, oldIrql);
+
+    *BufferLength -= sizeof(FILE_MAILSLOT_QUERY_INFORMATION);
+
+    return STATUS_SUCCESS;
+}
+
+
+static NTSTATUS
+MsfsSetMailslotInformation(PMSFS_FCB Fcb,
+                           PFILE_MAILSLOT_SET_INFORMATION Buffer,
+                           PULONG BufferLength)
+{
+    if (*BufferLength < sizeof(FILE_MAILSLOT_SET_INFORMATION))
+        return STATUS_BUFFER_OVERFLOW;
+
+    Fcb->TimeOut = *Buffer->ReadTimeout;
+
+    return STATUS_SUCCESS;
+}
+
+
+NTSTATUS DEFAULTAPI
+MsfsQueryInformation(PDEVICE_OBJECT DeviceObject,
+                     PIRP Irp)
+{
+    PIO_STACK_LOCATION IoStack;
+    FILE_INFORMATION_CLASS FileInformationClass;
+    PFILE_OBJECT FileObject;
+    PMSFS_FCB Fcb;
+    PMSFS_CCB Ccb;
+    PVOID SystemBuffer;
+    ULONG BufferLength;
+    NTSTATUS Status;
+
+    DPRINT("MsfsQueryInformation(DeviceObject %p Irp %p)\n",
+           DeviceObject, Irp);
+
+    IoStack = IoGetCurrentIrpStackLocation (Irp);
+    FileInformationClass = IoStack->Parameters.QueryFile.FileInformationClass;
+    FileObject = IoStack->FileObject;
+    Fcb = (PMSFS_FCB)FileObject->FsContext;
+    Ccb = (PMSFS_CCB)FileObject->FsContext2;
+
+    DPRINT("Mailslot name: %wZ\n", &Fcb->Name);
+
+    /* querying information is not permitted on client side */
+    if (Fcb->ServerCcb != Ccb)
+    {
+        Status = STATUS_ACCESS_DENIED;
+
+        Irp->IoStatus.Status = Status;
+        Irp->IoStatus.Information = 0;
+
+        IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+        return Status;
+    }
+
+    SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
+    BufferLength = IoStack->Parameters.QueryFile.Length;
+
+    switch (FileInformationClass)
+    {
+    case FileMailslotQueryInformation:
+        Status = MsfsQueryMailslotInformation(Fcb,
+                                              SystemBuffer,
+                                              &BufferLength);
+        break;
+
+    default:
+        Status = STATUS_NOT_IMPLEMENTED;
+    }
+
+    Irp->IoStatus.Status = Status;
+    if (NT_SUCCESS(Status))
+        Irp->IoStatus.Information =
+             IoStack->Parameters.QueryFile.Length - BufferLength;
+    else
+        Irp->IoStatus.Information = 0;
+    IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+    return Status;
+}
+
+
+NTSTATUS DEFAULTAPI
+MsfsSetInformation(PDEVICE_OBJECT DeviceObject,
+                   PIRP Irp)
+{
+    PIO_STACK_LOCATION IoStack;
+    FILE_INFORMATION_CLASS FileInformationClass;
+    PFILE_OBJECT FileObject;
+    PMSFS_FCB Fcb;
+    PMSFS_CCB Ccb;
+    PVOID SystemBuffer;
+    ULONG BufferLength;
+    NTSTATUS Status;
+
+    DPRINT("MsfsSetInformation(DeviceObject %p Irp %p)\n", DeviceObject, Irp);
+
+    IoStack = IoGetCurrentIrpStackLocation (Irp);
+    FileInformationClass = IoStack->Parameters.QueryFile.FileInformationClass;
+    FileObject = IoStack->FileObject;
+    Fcb = (PMSFS_FCB)FileObject->FsContext;
+    Ccb = (PMSFS_CCB)FileObject->FsContext2;
+
+    DPRINT("Mailslot name: %wZ\n", &Fcb->Name);
+
+    /* setting information is not permitted on client side */
+    if (Fcb->ServerCcb != Ccb)
+    {
+        Status = STATUS_ACCESS_DENIED;
+
+        Irp->IoStatus.Status = Status;
+        Irp->IoStatus.Information = 0;
+
+        IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+        return Status;
+    }
+
+    SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
+    BufferLength = IoStack->Parameters.QueryFile.Length;
+
+    DPRINT("FileInformationClass %d\n", FileInformationClass);
+    DPRINT("SystemBuffer %p\n", SystemBuffer);
+
+    switch (FileInformationClass)
+    {
+    case FileMailslotSetInformation:
+        Status = MsfsSetMailslotInformation(Fcb,
+                                            SystemBuffer,
+                                            &BufferLength);
+        break;
+
+     default:
+        Status = STATUS_NOT_IMPLEMENTED;
+    }
+
+    Irp->IoStatus.Status = Status;
+    Irp->IoStatus.Information = 0;
+    IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+    return Status;
+}
+
+/* EOF */