Reading the ELF of the current executable without copying it into memory a second time.

Hi,

This is more of a question that a bug.

I have a somewhat unusual use-case. I want to inspect the symbol table of the currently running executable.

The goblin example does this:

            let buffer = fs::read(path)?;

which I think loads the entire binary into memory. In the case of the binary being the same as the one currently running, that means we load most of the stuff in a second time.

Is there a more efficient way? If I were to mmap() the binary into memory, would most kernels be smart enough to share the pages with those already loaded?

Thanks

The issue points to the goblin example and its fs::read(path) call; start there and inspect how the ELF symbol table is consumed. Determine whether a supported approach for inspecting the current executable without a second in-memory copy can be specified, and define tests or documentation that establish the expected behavior.