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[FS_REC] Fix load-lock acquisition.

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Hermès Bélusca-Maïto 2021-09-24 17:51:40 +02:00
parent 618076dc47
commit 38ce67162f
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GPG key ID: 3B2539C65E7B93D0
1 changed files with 5 additions and 5 deletions
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10
drivers/filesystems/fs_rec/fs_rec.c
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@ -23,21 +23,22 @@ NTAPI
FsRecLoadFileSystem(IN PDEVICE_OBJECT DeviceObject, FsRecLoadFileSystem(IN PDEVICE_OBJECT DeviceObject,
IN PWCHAR DriverServiceName) IN PWCHAR DriverServiceName)
{ {
UNICODE_STRING DriverName;
PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
NTSTATUS Status = STATUS_IMAGE_ALREADY_LOADED; NTSTATUS Status = STATUS_IMAGE_ALREADY_LOADED;
PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
UNICODE_STRING DriverName;
PAGED_CODE(); PAGED_CODE();
/* Make sure we haven't already been called */ /* Make sure we haven't already been called */
if (DeviceExtension->State != Loaded) if (DeviceExtension->State != Loaded)
{ {
/* Acquire the load lock */ /* Acquire the load lock */
KeEnterCriticalRegion();
KeWaitForSingleObject(FsRecLoadSync, KeWaitForSingleObject(FsRecLoadSync,
Executive, Executive,
KernelMode, KernelMode,
FALSE, FALSE,
NULL); NULL);
KeEnterCriticalRegion();
/* Make sure we're active */ /* Make sure we're active */
if (DeviceExtension->State == Pending) if (DeviceExtension->State == Pending)
@ -67,11 +68,10 @@ FsRecLoadFileSystem(IN PDEVICE_OBJECT DeviceObject,
} }
/* Release the lock */ /* Release the lock */
KeSetEvent(FsRecLoadSync, 0, FALSE); KeSetEvent(FsRecLoadSync, IO_NO_INCREMENT, FALSE);
KeLeaveCriticalRegion(); KeLeaveCriticalRegion();
} }
/* Return */
return Status; return Status;
} }