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68 lines
2.5 KiB
Diff
68 lines
2.5 KiB
Diff
From 29d57097b8a1915d1fdbd8822117c096bb9e8dae Mon Sep 17 00:00:00 2001
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From: Zebediah Figura <z.figura12@gmail.com>
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Date: Tue, 29 Jan 2019 21:50:37 -0600
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Subject: [PATCH] ntoskrnl.exe: Implement ExIsResourceAcquiredExclusiveLite().
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Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
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---
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dlls/ntoskrnl.exe/ntoskrnl.exe.spec | 2 +-
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dlls/ntoskrnl.exe/sync.c | 19 +++++++++++++++++++
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include/ddk/wdm.h | 1 +
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3 files changed, 21 insertions(+), 1 deletion(-)
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diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
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index 51ba575..8892b7c 100644
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--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
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+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
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@@ -165,7 +165,7 @@
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@ stub ExInterlockedPushEntryList
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@ stdcall ExInterlockedRemoveHeadList(ptr ptr)
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@ stub ExIsProcessorFeaturePresent
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-@ stub ExIsResourceAcquiredExclusiveLite
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+@ stdcall ExIsResourceAcquiredExclusiveLite(ptr)
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@ stub ExIsResourceAcquiredSharedLite
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@ stdcall ExLocalTimeToSystemTime(ptr ptr) RtlLocalTimeToSystemTime
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@ stub ExNotifyCallback
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diff --git a/dlls/ntoskrnl.exe/sync.c b/dlls/ntoskrnl.exe/sync.c
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index c63d739..0f71902 100644
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--- a/dlls/ntoskrnl.exe/sync.c
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+++ b/dlls/ntoskrnl.exe/sync.c
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@@ -1045,3 +1045,22 @@ ULONG WINAPI ExGetSharedWaiterCount( ERESOURCE *resource )
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return count;
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}
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+
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+/***********************************************************************
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+ * ExIsResourceAcquiredExclusiveLite (NTOSKRNL.EXE.@)
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+ */
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+BOOLEAN WINAPI ExIsResourceAcquiredExclusiveLite( ERESOURCE *resource )
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+{
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+ BOOLEAN ret;
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+ KIRQL irql;
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+
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+ TRACE("resource %p.\n", resource);
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+
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+ KeAcquireSpinLock( &resource->SpinLock, &irql );
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+
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+ ret = (resource->OwnerEntry.OwnerThread == (ERESOURCE_THREAD)KeGetCurrentThread());
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+
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+ KeReleaseSpinLock( &resource->SpinLock, irql );
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+
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+ return ret;
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+}
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diff --git a/include/ddk/wdm.h b/include/ddk/wdm.h
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index 1c58ab9..80a82b0 100644
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--- a/include/ddk/wdm.h
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+++ b/include/ddk/wdm.h
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@@ -1531,6 +1531,7 @@ NTSTATUS WINAPI ExInitializeResourceLite(ERESOURCE*);
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PSLIST_ENTRY WINAPI ExInterlockedPopEntrySList(PSLIST_HEADER,PKSPIN_LOCK);
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PSLIST_ENTRY WINAPI ExInterlockedPushEntrySList(PSLIST_HEADER,PSLIST_ENTRY,PKSPIN_LOCK);
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LIST_ENTRY * WINAPI ExInterlockedRemoveHeadList(LIST_ENTRY*,KSPIN_LOCK*);
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+BOOLEAN WINAPI ExIsResourceAcquiredExclusiveLite(ERESOURCE*);
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void WINAPI ExReleaseFastMutexUnsafe(PFAST_MUTEX);
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void WINAPI ExReleaseResourceForThreadLite(ERESOURCE*,ERESOURCE_THREAD);
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ULONG WINAPI ExSetTimerResolution(ULONG,BOOLEAN);
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--
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1.9.1
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