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Dynamically reallocate the buffer for PnP event if it's too small.

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svn path=/trunk/; revision=13418
This commit is contained in:
Filip Navara 2005-02-05 08:44:49 +00:00
parent 92a1779473
commit e83557fa58
1 changed files with 13 additions and 5 deletions
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18
reactos/services/umpnpmgr/umpnpmgr.c
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@ -65,10 +65,12 @@ static DWORD WINAPI
PnpEventThread(LPVOID lpParameter) PnpEventThread(LPVOID lpParameter)
{ {
PPLUGPLAY_EVENT_BLOCK PnpEvent; PPLUGPLAY_EVENT_BLOCK PnpEvent;
ULONG PnpEventSize;
NTSTATUS Status; NTSTATUS Status;
RPC_STATUS RpcStatus; RPC_STATUS RpcStatus;
PnpEvent = HeapAlloc(GetProcessHeap(), 0, 1024); PnpEventSize = 0x1000;
PnpEvent = HeapAlloc(GetProcessHeap(), 0, PnpEventSize);
if (PnpEvent == NULL) if (PnpEvent == NULL)
return ERROR_OUTOFMEMORY; return ERROR_OUTOFMEMORY;
@ -76,10 +78,17 @@ PnpEventThread(LPVOID lpParameter)
{ {
DPRINT("Calling NtGetPlugPlayEvent()\n"); DPRINT("Calling NtGetPlugPlayEvent()\n");
ZeroMemory(PnpEvent, 1024);
/* Wait for the next pnp event */ /* Wait for the next pnp event */
Status = NtGetPlugPlayEvent(0, 0, PnpEvent, 1024); Status = NtGetPlugPlayEvent(0, 0, PnpEvent, 1024);
/* Resize the buffer for the PnP event if it's too small. */
if (Status == STATUS_BUFFER_TOO_SMALL)
{
PnpEventSize += 0x400;
PnpEvent = HeapReAlloc(GetProcessHeap(), 0, PnpEvent, PnpEventSize);
if (PnpEvent == NULL)
return ERROR_OUTOFMEMORY;
continue;
}
if (!NT_SUCCESS(Status)) if (!NT_SUCCESS(Status))
{ {
DPRINT("NtPlugPlayEvent() failed (Status %lx)\n", Status); DPRINT("NtPlugPlayEvent() failed (Status %lx)\n", Status);
@ -87,7 +96,7 @@ PnpEventThread(LPVOID lpParameter)
} }
DPRINT("Received PnP Event\n"); DPRINT("Received PnP Event\n");
if (UuidEqual((UUID*)&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_ARRIVAL, &RpcStatus)) if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_ARRIVAL, &RpcStatus))
{ {
DPRINT1("Device arrival event: %S\n", PnpEvent->TargetDevice.DeviceIds); DPRINT1("Device arrival event: %S\n", PnpEvent->TargetDevice.DeviceIds);
} }
@ -98,7 +107,6 @@ PnpEventThread(LPVOID lpParameter)
/* FIXME: Process the pnp event */ /* FIXME: Process the pnp event */
/* Dequeue the current pnp event and signal the next one */ /* Dequeue the current pnp event and signal the next one */
NtPlugPlayControl(PLUGPLAY_USER_RESPONSE, NULL, 0); NtPlugPlayControl(PLUGPLAY_USER_RESPONSE, NULL, 0);
} }