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sys: MustSucceed requests

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This commit is contained in:
Bill Zissimopoulos
2016-01-04 16:46:29 -08:00
parent 8ad93d934d
commit 3996169639
4 changed files with 112 additions and 64 deletions
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26
src/sys/cleanup.c
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@ -75,29 +75,21 @@ static NTSTATUS FspFsvolCleanup(
FspFsvolDeviceUnlockContextTable(FsvolDeviceObject);
}
/* create the user-mode file system request */
Result = FspIopCreateRequest(Irp, FileNameRequired ? &FsContext->FileName : 0, 0, &Request);
if (!NT_SUCCESS(Result))
{
/*
* This really should NOT fail, but can theoretically happen. One way around it would
* be to preallocate the Request at IRP_MJ_CREATE time. Unfortunately this becomes
* expensive (and complicated) because of the FileNameRequired functionality.
*/
#if DBG
DEBUGLOG("FileObject=%p, UserContext=%llx, UserContext2=%llx: "
"error: the user-mode file system handle will be leaked!",
FileObject, UserContext, UserContext2);
#endif
Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
/* create the user-mode file system request; MustSucceed because IRP_MJ_CLEANUP cannot fail */
Result = FspIopCreateRequestMustSucceed(Irp,
FileNameRequired ? &FsContext->FileName : 0, 0, &Request);
/* populate the Cleanup request */
Request->Kind = FspFsctlTransactCleanupKind;
Request->Req.Cleanup.UserContext = UserContext;
Request->Req.Cleanup.UserContext2 = UserContext2;
/*
* Note that it is still possible for this request to not be delivered,
* if the volume device Ioq is stopped. But such failures are benign
* from our perspective, because they mean that the file system is going
* away and should correctly tear things down.
*/
return STATUS_PENDING;
}