[reactos] 02/02: [SDK:CMLIB] HvGetCell is a macro calling the hive's GetCellRoutine callback.

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=8ccd435eb0b3237c98d39f...

commit 8ccd435eb0b3237c98d39f4a55f9bff669ff29a9
Author:     Hermès Bélusca-Maïto [e-mail]
AuthorDate: Sun Mar 27 17:30:52 2022 +0200
Commit:     Hermès Bélusca-Maïto [e-mail]
CommitDate: Sun Mar 27 18:37:16 2022 +0200

[SDK:CMLIB] HvGetCell is a macro calling the hive's GetCellRoutine callback.

In principle there should be different get-cell routines, depending
    on the type of the hive (given by the OperationType parameter of
    HvInitialize): for flat hives, memory-mapped hives, etc.
    For now in ReactOS we only support a restricted subset of these,
    therefore we are still happy with a single get-cell callback...
    This may change in the future.
---
 sdk/lib/cmlib/cmlib.h    | 19 +++++++++++--------
 sdk/lib/cmlib/hivecell.c | 17 ++++++++---------
 sdk/lib/cmlib/hiveinit.c |  5 +++++
 3 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/sdk/lib/cmlib/cmlib.h b/sdk/lib/cmlib/cmlib.h
index 1946ec5437b..6b65b73dc17 100644
--- a/sdk/lib/cmlib/cmlib.h
+++ b/sdk/lib/cmlib/cmlib.h
@@ -384,15 +384,13 @@ VOID CMAPI
 HvFree(
    PHHIVE RegistryHive);

-PVOID CMAPI
-HvGetCell(
-   PHHIVE RegistryHive,
-   HCELL_INDEX CellOffset);
+#define HvGetCell(Hive, Cell)   \
+    (Hive)->GetCellRoutine(Hive, Cell)

-#define HvReleaseCell(h, c)             \
-do {                                    \
-    if ((h)->ReleaseCellRoutine)        \
-        (h)->ReleaseCellRoutine(h, c);  \
+#define HvReleaseCell(Hive, Cell)               \
+do {                                            \
+    if ((Hive)->ReleaseCellRoutine)             \
+        (Hive)->ReleaseCellRoutine(Hive, Cell); \
 } while(0)

LONG CMAPI
@@ -468,6 +466,11 @@ HvReleaseFreeCellRefArray(
  * Private functions.
  */

+PCELL_DATA CMAPI
+HvpGetCellData(
+    _In_ PHHIVE Hive,
+    _In_ HCELL_INDEX CellIndex);
+
 PHBIN CMAPI
 HvpAddBin(
    PHHIVE RegistryHive,
diff --git a/sdk/lib/cmlib/hivecell.c b/sdk/lib/cmlib/hivecell.c
index a267130e494..9820ab8de22 100644
--- a/sdk/lib/cmlib/hivecell.c
+++ b/sdk/lib/cmlib/hivecell.c
@@ -29,13 +29,13 @@ HvpGetCellHeader(
         ASSERT(CellBlock < RegistryHive->Storage[CellType].Length);
         Block = (PVOID)RegistryHive->Storage[CellType].BlockList[CellBlock].BlockAddress;
         ASSERT(Block != NULL);
-        return (PVOID)((ULONG_PTR)Block + CellOffset);
+        return (PHCELL)((ULONG_PTR)Block + CellOffset);
     }
     else
     {
         ASSERT(HvGetCellType(CellIndex) == Stable);
-        return (PVOID)((ULONG_PTR)RegistryHive->BaseBlock + HBLOCK_SIZE +
-                       CellIndex);
+        return (PHCELL)((ULONG_PTR)RegistryHive->BaseBlock + HBLOCK_SIZE +
+                        CellIndex);
     }
 }

@@ -63,13 +63,12 @@ HvIsCellAllocated(IN PHHIVE RegistryHive,
     return FALSE;
 }

-PVOID CMAPI
-HvGetCell(
-    PHHIVE RegistryHive,
-    HCELL_INDEX CellIndex)
+PCELL_DATA CMAPI
+HvpGetCellData(
+    _In_ PHHIVE Hive,
+    _In_ HCELL_INDEX CellIndex)
 {
-    ASSERT(CellIndex != HCELL_NIL);
-    return (PVOID)(HvpGetCellHeader(RegistryHive, CellIndex) + 1);
+    return (PCELL_DATA)(HvpGetCellHeader(Hive, CellIndex) + 1);
 }

static __inline LONG CMAPI
diff --git a/sdk/lib/cmlib/hiveinit.c b/sdk/lib/cmlib/hiveinit.c
index fcbbe08961c..2b070fb4f7e 100644
--- a/sdk/lib/cmlib/hiveinit.c
+++ b/sdk/lib/cmlib/hiveinit.c
@@ -562,6 +562,11 @@ HvInitialize(
 #endif
     Hive->HiveFlags = HiveFlags & ~HIVE_NOLAZYFLUSH;

+    // TODO: The CellRoutines point to different callbacks
+    // depending on the OperationType.
+    Hive->GetCellRoutine = HvpGetCellData;
+    Hive->ReleaseCellRoutine = NULL;
+
     switch (OperationType)
     {
         case HINIT_CREATE: