Kernel - Add Vcb null check before marking the volume as having wait events

Liryna · Liryna · commit 92f7d2ecd43a · 2022-05-22T09:45:23.000-04:00
fixes #1093 This is clearly not enough but might help until DokanDiskUserFsRequest TODO is implemented
diff --git a/sys/fscontrol.c b/sys/fscontrol.c
@@ -528,6 +528,9 @@ NTSTATUS DokanProcessAndPullEvents(__in PREQUEST_CONTEXT RequestContext) {
     DOKAN_LOG_FINE_IRP(RequestContext, "No output buffer provided");
     return status;
   }
+  if (IsUnmountPendingVcb(RequestContext->Vcb)) {
+    return STATUS_NO_SUCH_DEVICE;
+  }
   // 3 - Flag the device as having workers starting to pull events.
   RequestContext->Vcb->HasEventWait = TRUE;
 

Original file line number	Diff line number	Diff line change
`@@ -528,6 +528,9 @@ NTSTATUS DokanProcessAndPullEvents(__in PREQUEST_CONTEXT RequestContext) {`
`528`	`528`	`DOKAN_LOG_FINE_IRP(RequestContext, "No output buffer provided");`
`529`	`529`	`return status;`
`530`	`530`	`}`
	`531`	`+ if (IsUnmountPendingVcb(RequestContext->Vcb)) {`
	`532`	`+ return STATUS_NO_SUCH_DEVICE;`
	`533`	`+ }`
`531`	`534`	`// 3 - Flag the device as having workers starting to pull events.`
`532`	`535`	`RequestContext->Vcb->HasEventWait = TRUE;`
`533`	`536`