kernelbase: Move FlsGetValue() implementation to ntdll.RtlFlsGetValue().

dlls/kernel32/tests/fiber.c

@@ -40,6 +40,7 @@ static BOOL (WINAPI *pFlsSetValue)(DWORD,PVOID);
 static NTSTATUS (WINAPI *pRtlFlsAlloc)(PFLS_CALLBACK_FUNCTION,DWORD*);
 static NTSTATUS (WINAPI *pRtlFlsFree)(ULONG);
 static NTSTATUS (WINAPI *pRtlFlsSetValue)(ULONG,void *);
+static NTSTATUS (WINAPI *pRtlFlsGetValue)(ULONG,void **);
 static void *fibers[3];
 static BYTE testparam = 185;
 static DWORD fls_index_to_set = FLS_OUT_OF_INDEXES;
@@ -72,6 +73,7 @@ static VOID init_funcs(void)
     X(RtlFlsAlloc);
     X(RtlFlsFree);
     X(RtlFlsSetValue);
+    X(RtlFlsGetValue);
 #undef X
 
 }
@@ -205,6 +207,16 @@ static void test_FiberLocalStorage(void)
 
     if (pRtlFlsAlloc)
     {
+        if (pRtlFlsGetValue)
+        {
+            status = pRtlFlsGetValue(0, NULL);
+            ok(status == STATUS_INVALID_PARAMETER, "Got unexpected status %#x.\n", status);
+        }
+        else
+        {
+            win_skip("RtlFlsGetValue is not available.\n");
+        }
+
         for (i = 0; i < FLS_TEST_INDEX_COUNT; ++i)
         {
             fls_indices[i] = 0xdeadbeef;
@@ -225,8 +237,21 @@ static void test_FiberLocalStorage(void)
         /* FLS limits are increased since Win10 18312. */
         ok(count && (count <= 127 || (count > 4000 && count < 4096)), "Got unexpected count %u.\n", count);
 
+        if (0)
+        {
+            /* crashes on Windows. */
+            pRtlFlsGetValue(fls_indices[0], NULL);
+        }
+
         for (i = 0; i < count; ++i)
         {
+            if (pRtlFlsGetValue)
+            {
+                status = pRtlFlsGetValue(fls_indices[i], &val);
+                ok(!status, "Got unexpected status %#x.\n", status);
+                ok(val == (void *)(ULONG_PTR)(i + 1), "Got unexpected val %p.\n", val);
+            }
+
             status = pRtlFlsFree(fls_indices[i]);
             ok(!status, "Got unexpected status %#x.\n", status);
         }
@@ -250,6 +275,14 @@ static void test_FiberLocalStorage(void)
     ok( val == NULL,
         "getting fls index 127 (unallocated) failed with error %u\n", GetLastError() );
 
+    if (pRtlFlsGetValue)
+    {
+        val = (void *)0xdeadbeef;
+        status = pRtlFlsGetValue(127, &val);
+        ok( !status, "Got unexpected status %#x.\n", status );
+        ok( !val, "Got unexpected val %p.\n", val );
+    }
+
     ret = pFlsSetValue( 127, (void*) 0x217 );
     ok( ret, "setting fls index 127 (unallocated) failed with error %u\n", GetLastError() );
 
@@ -259,6 +292,14 @@ static void test_FiberLocalStorage(void)
     ok( GetLastError() == ERROR_SUCCESS,
         "getting fls index 127 (unallocated) failed with error %u\n", GetLastError() );
 
+    if (pRtlFlsGetValue)
+    {
+        val = (void *)0xdeadbeef;
+        status = pRtlFlsGetValue(127, &val);
+        ok( !status, "Got unexpected status %#x.\n", status );
+        ok( val == (void*)0x217, "Got unexpected val %p.\n", val );
+    }
+
     /* FlsFree, FlsGetValue, and FlsSetValue out of bounds should return
      * ERROR_INVALID_PARAMETER
      */
@@ -283,6 +324,14 @@ static void test_FiberLocalStorage(void)
     val = pFlsGetValue( 0 );
     ok( !val, "fls index 0 set to %p\n", val );
     ok( GetLastError() == ERROR_INVALID_PARAMETER, "setting fls index wrong error %u\n", GetLastError() );
+    if (pRtlFlsGetValue)
+    {
+        val = (void *)0xdeadbeef;
+        status = pRtlFlsGetValue(0, &val);
+        ok( status == STATUS_INVALID_PARAMETER, "Got unexpected status %#x.\n", status );
+        ok( val == (void*)0xdeadbeef, "Got unexpected val %p.\n", val );
+    }
+
     SetLastError( 0xdeadbeef );
     ret = pFlsSetValue( 0, (void *)0xdeadbeef );
     ok( !ret, "setting fls index 0 succeeded\n" );

dlls/kernelbase/thread.c

@@ -1086,13 +1086,11 @@ BOOL WINAPI DECLSPEC_HOTPATCH FlsFree( DWORD index )
  */
 PVOID WINAPI DECLSPEC_HOTPATCH FlsGetValue( DWORD index )
 {
-    if (!index || index >= 8 * sizeof(NtCurrentTeb()->Peb->FlsBitmapBits) || !NtCurrentTeb()->FlsSlots)
-    {
-        SetLastError( ERROR_INVALID_PARAMETER );
-        return NULL;
-    }
+    void *data;
+
+    if (!set_ntstatus( RtlFlsGetValue( index, &data ))) return NULL;
     SetLastError( ERROR_SUCCESS );
-    return NtCurrentTeb()->FlsSlots[index];
+    return data;
 }
 
 

dlls/ntdll/ntdll.spec

@@ -668,6 +668,7 @@
 @ stdcall RtlFirstFreeAce(ptr ptr)
 @ stdcall RtlFlsAlloc(ptr ptr)
 @ stdcall RtlFlsFree(long)
+@ stdcall RtlFlsGetValue(long ptr)
 @ stdcall RtlFlsSetValue(long ptr)
 @ stub RtlFlushPropertySet
 # @ stub RtlFlushSecureMemoryCache

dlls/ntdll/thread.c

@@ -329,3 +329,17 @@ NTSTATUS WINAPI DECLSPEC_HOTPATCH RtlFlsSetValue( ULONG index, void *data )
     NtCurrentTeb()->FlsSlots[index] = data;
     return STATUS_SUCCESS;
 }
+
+
+/***********************************************************************
+ *              RtlFlsGetValue (NTDLL.@)
+ */
+NTSTATUS WINAPI DECLSPEC_HOTPATCH RtlFlsGetValue( ULONG index, void **data )
+{
+    if (!index || index >= 8 * sizeof(NtCurrentTeb()->Peb->FlsBitmapBits) || !NtCurrentTeb()->FlsSlots)
+        return STATUS_INVALID_PARAMETER;
+
+    *data = NtCurrentTeb()->FlsSlots[index];
+
+    return STATUS_SUCCESS;
+}

include/winternl.h

@@ -3373,6 +3373,7 @@ NTSYSAPI ULONG     WINAPI RtlFindSetRuns(PCRTL_BITMAP,PRTL_BITMAP_RUN,ULONG,BOOL
 NTSYSAPI BOOLEAN   WINAPI RtlFirstFreeAce(PACL,PACE_HEADER *);
 NTSYSAPI NTSTATUS  WINAPI RtlFlsAlloc(PFLS_CALLBACK_FUNCTION,ULONG *);
 NTSYSAPI NTSTATUS  WINAPI RtlFlsFree(ULONG);
+NTSYSAPI NTSTATUS  WINAPI RtlFlsGetValue(ULONG,void **);
 NTSYSAPI NTSTATUS  WINAPI RtlFlsSetValue(ULONG,void *);
 NTSYSAPI NTSTATUS  WINAPI RtlFormatCurrentUserKeyPath(PUNICODE_STRING);
 NTSYSAPI NTSTATUS  WINAPI RtlFormatMessage(LPCWSTR,ULONG,BOOLEAN,BOOLEAN,BOOLEAN,__ms_va_list *,LPWSTR,ULONG,ULONG*);