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64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
#include "common.h"
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#include "errors.h"
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#include "kernel32.h"
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namespace kernel32 {
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constexpr size_t MAX_FLS_VALUES = 0x100;
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static bool flsValuesUsed[MAX_FLS_VALUES] = {false};
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static void *flsValues[MAX_FLS_VALUES];
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DWORD WIN_FUNC FlsAlloc(PFLS_CALLBACK_FUNCTION lpCallback) {
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DEBUG_LOG("FlsAlloc(%p)", lpCallback);
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// If the function succeeds, the return value is an FLS index initialized to zero.
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for (size_t i = 0; i < MAX_FLS_VALUES; i++) {
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if (flsValuesUsed[i] == false) {
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flsValuesUsed[i] = true;
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flsValues[i] = nullptr;
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DEBUG_LOG(" -> %d\n", i);
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return i;
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}
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}
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DEBUG_LOG(" -> -1\n");
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wibo::lastError = 1;
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return FLS_OUT_OF_INDEXES;
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}
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BOOL WIN_FUNC FlsFree(DWORD dwFlsIndex) {
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DEBUG_LOG("FlsFree(%u)\n", dwFlsIndex);
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if (dwFlsIndex >= 0 && dwFlsIndex < MAX_FLS_VALUES && flsValuesUsed[dwFlsIndex]) {
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flsValuesUsed[dwFlsIndex] = false;
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return TRUE;
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} else {
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wibo::lastError = 1;
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return FALSE;
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}
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}
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PVOID WIN_FUNC FlsGetValue(DWORD dwFlsIndex) {
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VERBOSE_LOG("FlsGetValue(%u)\n", dwFlsIndex);
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PVOID result = nullptr;
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if (dwFlsIndex >= 0 && dwFlsIndex < MAX_FLS_VALUES && flsValuesUsed[dwFlsIndex]) {
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result = flsValues[dwFlsIndex];
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// See https://learn.microsoft.com/en-us/windows/win32/api/fibersapi/nf-fibersapi-flsgetvalue
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wibo::lastError = ERROR_SUCCESS;
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} else {
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wibo::lastError = 1;
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}
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// DEBUG_LOG(" -> %p\n", result);
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return result;
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}
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BOOL WIN_FUNC FlsSetValue(DWORD dwFlsIndex, PVOID lpFlsData) {
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VERBOSE_LOG("FlsSetValue(%u, %p)\n", dwFlsIndex, lpFlsData);
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if (dwFlsIndex >= 0 && dwFlsIndex < MAX_FLS_VALUES && flsValuesUsed[dwFlsIndex]) {
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flsValues[dwFlsIndex] = lpFlsData;
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return TRUE;
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} else {
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wibo::lastError = 1;
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return FALSE;
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}
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}
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} // namespace kernel32
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