C++ tmpnam alternative

问题

I have a C++ library that uses tmpnam(NULL) to create a temporary file.

I need to hack this because it makes the temp file in the root folder ("c:" or "/") and so it needs the administrative privileges. How can I change this function with other one using a valid temp path?

Thanks.

回答1:

Though tmpnam returns a filename pre-pended by / - it actually denotes a unique filename in the current directory and not / or c:\. So you can chdir to any other directory before calling tmpnam to find a unique filename for that directory.

You can also call tempnam instead of tmpnam which allows takes a directory name as input.

来源：https://stackoverflow.com/questions/18570517/c-tmpnam-alternative