Function rewrite_path_arg 

pub fn rewrite_path_arg(
    ctx: &Ctx,
    fs: &Fs,
    regs: &mut Regs,
    index: usize,
    deref_final: bool,
) -> Result<(), i32>

Translates the path in argument index and points it at the host path.

An empty path is left as it is, for the kernel to refuse with ENOENT.

Arguments

• ctx - Shared supervisor state.
• fs - The tracee’s filesystem view.
• regs - Registers at the stop.
• index - Argument index holding the path pointer.
• deref_final - Follow a trailing symlink.