[reactos] 55/100: [NTOS:CC] Fix some tests, complain where the current implementation won't let us do the right thing

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=6d97d8d2e15d9db634a21…

commit 6d97d8d2e15d9db634a2188d0f17983d74ea156c
Author:     Jérôme Gardou <jerome.gardou(a)reactos.org>
AuthorDate: Fri Dec 18 15:24:09 2020 +0100
Commit:     Jérôme Gardou <jerome.gardou(a)reactos.org>
CommitDate: Wed Feb 3 09:41:22 2021 +0100

    [NTOS:CC] Fix some tests, complain where the current implementation won't let us
do the right thing
---
 ntoskrnl/cc/pin.c  | 9 ++++++++-
 ntoskrnl/cc/view.c | 6 ------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c
index 0d5642b9932..597468f6fd7 100644
--- a/ntoskrnl/cc/pin.c
+++ b/ntoskrnl/cc/pin.c
@@ -225,9 +225,13 @@ CcpPinData(
     BOOLEAN Result;
 
     VacbOffset = (ULONG)(FileOffset->QuadPart % VACB_MAPPING_GRANULARITY);
-    /* This seems to be valid, according to KMTests */
+
     if ((VacbOffset + Length) > VACB_MAPPING_GRANULARITY)
+    {
+        /* Complain loudly, we shoud pin the whole range */
+        DPRINT1("TRUNCATING DATA PIN FROM %lu to %lu!\n", Length,
VACB_MAPPING_GRANULARITY - VacbOffset);
         Length = VACB_MAPPING_GRANULARITY - VacbOffset;
+    }
 
     KeAcquireSpinLock(&SharedCacheMap->BcbSpinLock, &OldIrql);
     NewBcb = CcpFindBcb(SharedCacheMap, FileOffset, Length, TRUE);
@@ -353,7 +357,10 @@ CcMapData (
     VacbOffset = (ULONG)(FileOffset->QuadPart % VACB_MAPPING_GRANULARITY);
     /* KMTests seem to show that it is allowed to call accross mapping granularity */
     if ((VacbOffset + Length) > VACB_MAPPING_GRANULARITY)
+    {
+        DPRINT1("TRUNCATING DATA MAP FROM %lu to %lu!\n", Length,
VACB_MAPPING_GRANULARITY - VacbOffset);
         Length = VACB_MAPPING_GRANULARITY - VacbOffset;
+    }
 
     KeAcquireSpinLock(&SharedCacheMap->BcbSpinLock, &OldIrql);
     iBcb = CcpFindBcb(SharedCacheMap, FileOffset, Length, FALSE);
diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c
index ae6464f2b58..3952986dc44 100644
--- a/ntoskrnl/cc/view.c
+++ b/ntoskrnl/cc/view.c
@@ -572,12 +572,6 @@ CcRosCreateVacb (
 
     DPRINT("CcRosCreateVacb()\n");
 
-    if (FileOffset >= SharedCacheMap->SectionSize.QuadPart)
-    {
-        *Vacb = NULL;
-        return STATUS_INVALID_PARAMETER;
-    }
-
     current = ExAllocateFromNPagedLookasideList(&VacbLookasideList);
     current->BaseAddress = NULL;
     current->Valid = FALSE;