Update volume identifier (Windows Sysinternals VolumeId64.exe)

sub_140003100.c

__int64 sub_140003100()
{
  HANDLE FileA; // rax
  void *v1; // rbx
  DWORD LastError; // eax
  DWORD v3; // eax
  DWORD v4; // eax
  CHAR Buffer[8]; // [rsp+40h] [rbp-C0h] BYREF
  DWORD NumberOfBytesRead; // [rsp+48h] [rbp-B8h] BYREF
  char v8[3]; // [rsp+50h] [rbp-B0h] BYREF
  char Str1[36]; // [rsp+53h] [rbp-ADh] BYREF
  int v10; // [rsp+77h] [rbp-89h]
  char v11[13]; // [rsp+86h] [rbp-7Ah] BYREF
  int v12; // [rsp+93h] [rbp-6Dh]
  int v13; // [rsp+98h] [rbp-68h]
  char v14[430]; // [rsp+A2h] [rbp-5Eh] BYREF
  CHAR FileName[256]; // [rsp+250h] [rbp+150h] BYREF

  sprintf(FileName, "\\\\.\\%c:", (unsigned int)byte_140025AF4);
  FileA = CreateFileA(FileName, 0xC0000000, 3u, 0LL, 3u, 0, 0LL);
  v1 = FileA;
  if ( FileA == (HANDLE)-1LL )
  {
    LastError = GetLastError();
    FormatMessageA(0x1100u, 0LL, LastError, 0x400u, Buffer, 0, 0LL);
    sub_140002700("Error opening drive", *(_QWORD *)Buffer);
    LocalFree(*(HLOCAL *)Buffer);
  }
  else if ( ReadFile(FileA, v8, 0x200u, &NumberOfBytesRead, 0LL) )
  {
    if ( !strncmp(Str1, "NTFS", 4uLL) )
    {
      v13 = dword_140025AF0;
    }
    else if ( !strncmp(v14, "FAT32", 5uLL) )
    {
      v12 = dword_140025AF0;
    }
    else
    {
      if ( strncmp(v11, "FAT", 3uLL) )
      {
        printf("\n\nUnrecognized drive type\n");
        return 0LL;
      }
      v10 = dword_140025AF0;
    }
    SetFilePointer(v1, 0, 0LL, 0);
    NumberOfBytesRead = 512;
    if ( WriteFile(v1, v8, 0x200u, &NumberOfBytesRead, 0LL) )
    {
      CloseHandle(v1);
      printf(
        "Volume ID for drive %C: updated to %04x-%04x\n",
        byte_140025AF4,
        HIWORD(dword_140025AF0),
        (unsigned __int16)dword_140025AF0);
      return 1LL;
    }
    v4 = GetLastError();
    FormatMessageA(0x1100u, 0LL, v4, 0x400u, Buffer, 0, 0LL);
    sub_140002700("Error writing volume id", *(_QWORD *)Buffer);
    LocalFree(*(HLOCAL *)Buffer);
  }
  else
  {
    v3 = GetLastError();
    FormatMessageA(0x1100u, 0LL, v3, 0x400u, Buffer, 0, 0LL);
    sub_140002700("Error reading drive", *(_QWORD *)Buffer);
    LocalFree(*(HLOCAL *)Buffer);
  }
  return 0LL;
}