GetHyperVStatus2

#include <stdio.h>
#include <windows.h>

// Define Buffer Size
#define BUF4 4096
#define BUF5 4096

// Get Hyper-V Status Function
void GetHyperVStatus() {
    STARTUPINFOA si;
    SECURITY_ATTRIBUTES sa;
    PROCESS_INFORMATION pi;
    HANDLE g_hChildStd_OUT_Rd = NULL;
    HANDLE g_hChildStd_OUT_Wr = NULL;
    DWORD dwRead;
    char chBuf[BUF4];
    char outbuf[BUF5] = { 0 };
    ZeroMemory(&sa, sizeof(sa));
    sa.nLength = sizeof(sa);
    sa.bInheritHandle = TRUE;
    sa.lpSecurityDescriptor = NULL;
    // Create A Pipe For The Child Process's STDOUT
    if (!CreatePipe(&g_hChildStd_OUT_Rd, &g_hChildStd_OUT_Wr, &sa, 0))
    {
        puts("Error: CreatePipe Failed!");
        printf("Error Code: %d\n", GetLastError());
        return;
    }
    // Ensure The Read Handle To The Pipe For STDOUT Is Not Inherited
    if (!SetHandleInformation(g_hChildStd_OUT_Rd, HANDLE_FLAG_INHERIT, 0))
    {
        puts("Error: SetHandleInformation Failed!");
        printf("Error Code: %d\n", GetLastError());
        return;
    }
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    si.hStdError = g_hChildStd_OUT_Wr;
    si.hStdOutput = g_hChildStd_OUT_Wr;
    si.dwFlags |= STARTF_USESTDHANDLES;
    ZeroMemory(&pi, sizeof(pi));
    // Start The Child Process
    if (!CreateProcessA("C:\\Windows\\System32\\bcdedit.exe", "C:\\Windows\\System32\\bcdedit.exe /enum {default}", NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
    {
        if (!CreateProcessA("C:\\Windows\\Sysnative\\bcdedit.exe", "C:\\Windows\\Sysnative\\bcdedit.exe /enum {default}", NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
        {
            puts("Error: CreateProcess Failed!");
            printf("Error Code: %d\n", GetLastError());
            return;
        }
    }
    // Close Child Process's STDOUT Write Handle
    CloseHandle(g_hChildStd_OUT_Wr);
    // Read STDOUT From Child Proces
    while(1) {
       if (!ReadFile(g_hChildStd_OUT_Rd, chBuf, sizeof(chBuf), &dwRead, NULL))
       {
           break;
       }
       if (dwRead > 0) {
           chBuf[dwRead - 1] = '\0';
           strcat_s(outbuf, sizeof(outbuf), chBuf);
       }
    }
    // Check Hyper-V Status
    if (strstr(outbuf, "hypervisorlaunchtype    Auto") != NULL) {
      puts("hypervisorlaunchtype     Auto");
    }
    else if (strstr(outbuf, "hypervisorlaunchtype    Off") != NULL) {
      puts("hypervisorlaunchtype    Off");
    }
    else {
      puts("Unknown Hyper-V Status");
    }
    // Close Child Process's STDOUT Read Handle
    CloseHandle(g_hChildStd_OUT_Rd);
    // Wait Until Child Process Exits
    WaitForSingleObject(pi.hProcess, INFINITE);
    // Close Process And Thread Handles
    CloseHandle(pi.hProcess);
    CloseHandle(pi.hThread);
}