multithreading - CreateNamedPipe ERROR_INVALID_NAME

Question

程式码片段:

void RunThread(void* unused_args)
{
    PSECURITY_DESCRIPTOR sdsc;
    ULONG size;
    ConvertStringSecurityDescriptorToSecurityDescriptor("S:(ML;;NW;;;LW)", SDDL_REVISION_1, &sdsc, &size);
    SECURITY_ATTRIBUTES sa;
    sa.nLength = sizeof(sa);
    sa.bInheritHandle = false;
    sa.lpSecurityDescriptor = sdsc;
    HANDLE pipe = CreateNamedPipe("\\.\pipe\mmaivpc_test_pipe", PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE, 255, 1024, 1024, 0, &sa);
    DWORD error = GetLastError();
}

如果您尚未从函数名称中弄清楚，那么 _beginthread会调用此函数。 GetLastError()返回 ERROR_INVALID_NAME，我不知道为什么。

Answer 1

您需要在用于管道名称的字符串文字中转义反斜杠:

HANDLE pipe = CreateNamedPipe("\\\\.\\pipe\\mmaivpc_test_pipe",
                              PIPE_ACCESS_DUPLEX, 
                              PIPE_TYPE_BYTE, 255, 1024, 1024, 0, &sa);