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75 lines
2.7 KiB
Diff
75 lines
2.7 KiB
Diff
From 5203c63e18a2461b1909996ec1ffbcc662d57865 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 21:51:08 -0600
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Subject: [PATCH 12/13] ntoskrnl.exe: Implement
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ExIsResourceAcquiredSharedLite().
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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 | 25 +++++++++++++++++++++++++
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include/ddk/wdm.h | 1 +
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3 files changed, 27 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 66f0b7d9..127c5ef3 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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@@ -166,7 +166,7 @@
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@ stdcall ExInterlockedRemoveHeadList(ptr ptr)
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@ stub ExIsProcessorFeaturePresent
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@ stdcall ExIsResourceAcquiredExclusiveLite(ptr)
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-@ stub ExIsResourceAcquiredSharedLite
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+@ stdcall ExIsResourceAcquiredSharedLite(ptr)
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@ stdcall ExLocalTimeToSystemTime(ptr ptr) RtlLocalTimeToSystemTime
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@ stub ExNotifyCallback
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@ stub ExQueryPoolBlockSize
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diff --git a/dlls/ntoskrnl.exe/sync.c b/dlls/ntoskrnl.exe/sync.c
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index cee15605..5154ea5c 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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@@ -1088,3 +1088,28 @@ BOOLEAN WINAPI ExIsResourceAcquiredExclusiveLite( ERESOURCE *resource )
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return ret;
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}
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+
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+/***********************************************************************
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+ * ExIsResourceAcquiredSharedLite (NTOSKRNL.EXE.@)
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+ */
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+ULONG WINAPI ExIsResourceAcquiredSharedLite( ERESOURCE *resource )
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+{
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+ ULONG 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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+ if (resource->OwnerEntry.OwnerThread == (ERESOURCE_THREAD)KeGetCurrentThread())
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+ ret = resource->ActiveEntries;
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+ else
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+ {
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+ OWNER_ENTRY *entry = resource_get_shared_entry( resource, (ERESOURCE_THREAD)KeGetCurrentThread() );
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+ ret = entry->OwnerCount;
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+ }
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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 76eb6117..e5a2906f 100644
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--- a/include/ddk/wdm.h
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+++ b/include/ddk/wdm.h
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@@ -1532,6 +1532,7 @@ 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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+ULONG WINAPI ExIsResourceAcquiredSharedLite(ERESOURCE*);
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void WINAPI ExReleaseFastMutexUnsafe(PFAST_MUTEX);
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void WINAPI ExReleaseResourceForThreadLite(ERESOURCE*,ERESOURCE_THREAD);
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--
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2.20.1
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