/* FUNCTIONS *****************************************************************/
+static
+VOID
+NpfsDeleteFcb(PNPFS_FCB Fcb)
+{
+ PNPFS_VCB Vcb = Fcb->Vcb;
+
+ KeLockMutex(&Vcb->PipeListLock);
+ RemoveEntryList(&Fcb->PipeListEntry);
+ KeUnlockMutex(&Vcb->PipeListLock);
+ RtlFreeUnicodeString(&Fcb->PipeName);
+ ExFreePoolWithTag(Fcb, TAG_NPFS_FCB);
+}
+
+static
+PNPFS_CCB
+NpfsAllocateCcb(CCB_TYPE Type, PNPFS_FCB Fcb)
+{
+ PNPFS_CCB Ccb;
+
+ Ccb = ExAllocatePoolWithTag(NonPagedPool, sizeof(NPFS_CCB), TAG_NPFS_CCB);
+ if (!Ccb)
+ {
+ return NULL;
+ }
+
+ RtlZeroMemory(Ccb, sizeof(NPFS_CCB));
+
+ Ccb->RefCount = 1;
+ Ccb->Type = Type;
+ Ccb->Fcb = Fcb;
+ Ccb->OtherSide = NULL;
+
+ return Ccb;
+}
+
+static
+VOID
+NpfsReferenceCcb(PNPFS_CCB Ccb)
+{
+ ASSERT(Ccb->RefCount > 0);
+ InterlockedIncrement((PLONG)&Ccb->RefCount);
+}
+
+static
+VOID
+NpfsDereferenceCcb(PNPFS_CCB Ccb)
+{
+ /* Decrement reference count */
+ ASSERT(Ccb->RefCount > 0);
+ if (InterlockedDecrement((PLONG)&Ccb->RefCount) == 0)
+ {
+ /* Its zero, delete CCB */
+ ExFreePoolWithTag(Ccb, TAG_NPFS_CCB);
+ }
+}
+
+static
+VOID
+NpfsCcbSetOtherSide(PNPFS_CCB Ccb, PNPFS_CCB OtherSide)
+{
+ /* Dereference old other side */
+ if (Ccb->OtherSide) NpfsDereferenceCcb(Ccb->OtherSide);
+
+ /* Reference the new other side */
+ if (OtherSide) NpfsReferenceCcb(OtherSide);
+
+ /* Set new value */
+ Ccb->OtherSide = OtherSide;
+}
+
PNPFS_FCB
NpfsFindPipe(PNPFS_VCB Vcb,
PUNICODE_STRING PipeName)
DPRINT("NpfsOpenFileSystem()\n");
- Ccb = ExAllocatePool(NonPagedPool, sizeof(NPFS_CCB));
+ Ccb = NpfsAllocateCcb(CCB_DEVICE, Fcb);
if (Ccb == NULL)
{
IoStatus->Status = STATUS_NO_MEMORY;
return;
}
- RtlZeroMemory(Ccb, sizeof(NPFS_CCB));
-
- Ccb->Type = CCB_DEVICE;
- Ccb->Fcb = Fcb;
-
FileObject->FsContext = Fcb;
FileObject->FsContext2 = Ccb;
DPRINT("NpfsOpenRootDirectory()\n");
- Ccb = ExAllocatePool(NonPagedPool, sizeof(NPFS_CCB));
+ Ccb = NpfsAllocateCcb(CCB_DIRECTORY, Fcb);
if (Ccb == NULL)
{
IoStatus->Status = STATUS_NO_MEMORY;
return;
}
- RtlZeroMemory(Ccb, sizeof(NPFS_CCB));
-
- Ccb->Type = CCB_DIRECTORY;
- Ccb->Fcb = Fcb;
-
FileObject->FsContext = Fcb;
FileObject->FsContext2 = Ccb;
* Step 1. Find the pipe we're trying to open.
*/
KeLockMutex(&Vcb->PipeListLock);
- Fcb = NpfsFindPipe(Vcb,
- &FileObject->FileName);
+ Fcb = NpfsFindPipe(Vcb, &FileObject->FileName);
if (Fcb == NULL)
{
/* Not found, bail out with error. */
/*
* Step 2. Create the client CCB.
*/
- ClientCcb = ExAllocatePool(NonPagedPool, sizeof(NPFS_CCB));
+ ClientCcb = NpfsAllocateCcb(CCB_PIPE, Fcb);
if (ClientCcb == NULL)
{
DPRINT("No memory!\n");
return STATUS_NO_MEMORY;
}
- ClientCcb->Type = CCB_PIPE;
ClientCcb->Thread = (struct ETHREAD *)Irp->Tail.Overlay.Thread;
- ClientCcb->Fcb = Fcb;
ClientCcb->PipeEnd = FILE_PIPE_CLIENT_END;
- ClientCcb->OtherSide = NULL;
#ifndef USING_PROPER_NPFS_WAIT_SEMANTICS
ClientCcb->PipeState = SpecialAccess ? 0 : FILE_PIPE_DISCONNECTED_STATE;
#else
/* Initialize data list. */
if (Fcb->OutboundQuota)
{
- ClientCcb->Data = ExAllocatePool(PagedPool, Fcb->OutboundQuota);
+ ClientCcb->Data = ExAllocatePoolWithTag(PagedPool,
+ Fcb->OutboundQuota,
+ TAG_NPFS_CCB_DATA);
if (ClientCcb->Data == NULL)
{
DPRINT("No memory!\n");
- ExFreePool(ClientCcb);
+ NpfsDereferenceCcb(ClientCcb);
KeUnlockMutex(&Fcb->CcbListLock);
Irp->IoStatus.Status = STATUS_NO_MEMORY;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DPRINT("No listening server CCB found!\n");
if (ClientCcb->Data)
{
- ExFreePool(ClientCcb->Data);
+ ExFreePoolWithTag(ClientCcb->Data, TAG_NPFS_CCB_DATA);
}
- ExFreePool(ClientCcb);
+ NpfsDereferenceCcb(ClientCcb);
KeUnlockMutex(&Fcb->CcbListLock);
Irp->IoStatus.Status = STATUS_OBJECT_PATH_NOT_FOUND;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
if (ClientCcb->Data)
{
- ExFreePool(ClientCcb->Data);
+ ExFreePoolWithTag(ClientCcb->Data, TAG_NPFS_CCB_DATA);
}
- ExFreePool(ClientCcb);
+ NpfsDereferenceCcb(ClientCcb);
KeUnlockMutex(&Fcb->CcbListLock);
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
/* Connect to listening server side */
if (ServerCcb)
{
- ClientCcb->OtherSide = ServerCcb;
- ServerCcb->OtherSide = ClientCcb;
+ NpfsCcbSetOtherSide(ClientCcb, ServerCcb);
+ NpfsCcbSetOtherSide(ServerCcb, ClientCcb);
ClientCcb->PipeState = FILE_PIPE_CONNECTED_STATE;
ServerCcb->PipeState = FILE_PIPE_CONNECTED_STATE;
KeSetEvent(&ServerCcb->ConnectEvent, IO_NO_INCREMENT, FALSE);
return STATUS_INVALID_PARAMETER;
}
- Ccb = ExAllocatePool(NonPagedPool, sizeof(NPFS_CCB));
- if (Ccb == NULL)
- {
- Irp->IoStatus.Status = STATUS_NO_MEMORY;
- IoCompleteRequest(Irp, IO_NO_INCREMENT);
- return STATUS_NO_MEMORY;
- }
-
- Ccb->Type = CCB_PIPE;
- Ccb->Thread = (struct ETHREAD *)Irp->Tail.Overlay.Thread;
KeLockMutex(&Vcb->PipeListLock);
/*
* First search for existing Pipe with the same name.
*/
- Fcb = NpfsFindPipe(Vcb,
- &FileObject->FileName);
+ Fcb = NpfsFindPipe(Vcb, &FileObject->FileName);
if (Fcb != NULL)
{
/*
if (Fcb->CurrentInstances >= Fcb->MaximumInstances)
{
DPRINT("Out of instances.\n");
- ExFreePool(Ccb);
Irp->IoStatus.Status = STATUS_INSTANCE_NOT_AVAILABLE;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_INSTANCE_NOT_AVAILABLE;
Fcb->PipeType != Buffer->NamedPipeType)
{
DPRINT("Asked for invalid pipe mode.\n");
- ExFreePool(Ccb);
Irp->IoStatus.Status = STATUS_ACCESS_DENIED;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_ACCESS_DENIED;
else
{
NewPipe = TRUE;
- Fcb = ExAllocatePool(NonPagedPool, sizeof(NPFS_FCB));
+ Fcb = ExAllocatePoolWithTag(NonPagedPool, sizeof(NPFS_FCB), TAG_NPFS_FCB);
if (Fcb == NULL)
{
KeUnlockMutex(&Vcb->PipeListLock);
- ExFreePool(Ccb);
Irp->IoStatus.Status = STATUS_NO_MEMORY;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
Fcb->Vcb = Vcb;
Fcb->PipeName.Length = FileObject->FileName.Length;
Fcb->PipeName.MaximumLength = Fcb->PipeName.Length + sizeof(UNICODE_NULL);
- Fcb->PipeName.Buffer = ExAllocatePool(NonPagedPool, Fcb->PipeName.MaximumLength);
+ Fcb->PipeName.Buffer = ExAllocatePoolWithTag(NonPagedPool,
+ Fcb->PipeName.MaximumLength,
+ TAG_NPFS_NAMEBLOCK);
if (Fcb->PipeName.Buffer == NULL)
{
KeUnlockMutex(&Vcb->PipeListLock);
- ExFreePool(Fcb);
- ExFreePool(Ccb);
+ ExFreePoolWithTag(Fcb, TAG_NPFS_FCB);
Irp->IoStatus.Status = STATUS_NO_MEMORY;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
KeUnlockMutex(&Vcb->PipeListLock);
}
+ Ccb = NpfsAllocateCcb(CCB_PIPE, Fcb);
+ if (Ccb == NULL)
+ {
+ if (NewPipe)
+ {
+ NpfsDeleteFcb(Fcb);
+ }
+
+ Irp->IoStatus.Status = STATUS_NO_MEMORY;
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ return STATUS_NO_MEMORY;
+ }
+
+ Ccb->Thread = (struct ETHREAD *)Irp->Tail.Overlay.Thread;
+
if (Fcb->InboundQuota)
{
- Ccb->Data = ExAllocatePool(PagedPool, Fcb->InboundQuota);
+ Ccb->Data = ExAllocatePoolWithTag(PagedPool,
+ Fcb->InboundQuota,
+ TAG_NPFS_CCB_DATA);
if (Ccb->Data == NULL)
{
- ExFreePool(Ccb);
+ NpfsDereferenceCcb(Ccb);
if (NewPipe)
{
- KeLockMutex(&Vcb->PipeListLock);
- RemoveEntryList(&Fcb->PipeListEntry);
- KeUnlockMutex(&Vcb->PipeListLock);
- RtlFreeUnicodeString(&Fcb->PipeName);
- ExFreePool(Fcb);
+ NpfsDeleteFcb(Fcb);
}
Irp->IoStatus.Status = STATUS_NO_MEMORY;
Ccb->Fcb = Fcb;
Ccb->PipeEnd = FILE_PIPE_SERVER_END;
Ccb->PipeState = FILE_PIPE_LISTENING_STATE;
- Ccb->OtherSide = NULL;
DPRINT("CCB: %p\n", Ccb);
if ((Ccb->PipeState == FILE_PIPE_CONNECTED_STATE) && (Ccb->OtherSide))
{
OtherSide = Ccb->OtherSide;
+ ASSERT(OtherSide->OtherSide == Ccb);
+
/* Lock the server first */
if (Server)
{
ExAcquireFastMutex(&OtherSide->DataListLock);
ExAcquireFastMutex(&Ccb->DataListLock);
}
- OtherSide->OtherSide = NULL;
+
+ /* Unlink FCBs */
+ NpfsCcbSetOtherSide(OtherSide, NULL);
+ NpfsCcbSetOtherSide(Ccb, NULL);
+
/*
* Signaling the write event. If is possible that an other
* thread waits for an empty buffer.
ExAcquireFastMutex(&Ccb->DataListLock);
if (Ccb->Data)
{
- ExFreePool(Ccb->Data);
+ ExFreePoolWithTag(Ccb->Data, TAG_NPFS_CCB_DATA);
Ccb->Data = NULL;
Ccb->ReadPtr = NULL;
Ccb->WritePtr = NULL;
{
DPRINT("Closing the file system!\n");
- ExFreePool(Ccb);
+ NpfsDereferenceCcb(Ccb);
FileObject->FsContext = NULL;
FileObject->FsContext2 = NULL;
DPRINT("Closing the root directory!\n");
if (Ccb->u.Directory.SearchPattern.Buffer != NULL)
- ExFreePool(Ccb->u.Directory.SearchPattern.Buffer);
+ ExFreePoolWithTag(Ccb->u.Directory.SearchPattern.Buffer,
+ TAG_NPFS_NAMEBLOCK);
- ExFreePool(Ccb);
+ NpfsDereferenceCcb(Ccb);
FileObject->FsContext = NULL;
FileObject->FsContext2 = NULL;
/* Disconnect the pipes */
if (Ccb->OtherSide)
{
- Ccb->OtherSide->OtherSide = NULL;
- Ccb->OtherSide = NULL;
+ /* FIXME: Timo wants it rewritten */
+ /*ASSERT(Ccb->OtherSide->OtherSide == Ccb);*/
+ NpfsCcbSetOtherSide(Ccb->OtherSide, NULL);
+ NpfsCcbSetOtherSide(Ccb, NULL);
}
ASSERT(Ccb->PipeState == FILE_PIPE_CLOSING_STATE);
RemoveEntryList(&Ccb->CcbListEntry);
- ExFreePool(Ccb);
+ NpfsDereferenceCcb(Ccb);
KeUnlockMutex(&Fcb->CcbListLock);
if (IsListEmpty(&Fcb->ServerCcbListHead) &&
IsListEmpty(&Fcb->ClientCcbListHead))
{
- RtlFreeUnicodeString(&Fcb->PipeName);
- KeLockMutex(&Vcb->PipeListLock);
- RemoveEntryList(&Fcb->PipeListEntry);
- KeUnlockMutex(&Vcb->PipeListLock);
- ExFreePool(Fcb);
+ NpfsDeleteFcb(Fcb);
FileObject->FsContext = NULL;
}
projects / reactos.git / blobdiff