Function dr_get_proc_address 

pub unsafe extern "C" fn dr_get_proc_address(
    lib: module_handle_t,
    name: *const c_char,
) -> generic_func_t

Returns the entry point of the exported function with the given name in the module with the given base. Returns NULL on failure.

On Linux, when we say “exported” we mean present in the dynamic symbol table (.dynsym). Global functions and variables in an executable (as opposed to a library) are not exported by default. If an executable is built with the \p -rdynamic flag to \p gcc, its global symbols will be present in .dynsym and dr_get_proc_address() will locate them. Otherwise, the drsyms Extension (see \ref page_drsyms) must be used to locate the symbols. drsyms searches the debug symbol table (.symtab) in addition to .dynsym.

\note On Linux this ignores symbol preemption by other modules and only examines the specified module. \note On Linux, in order to handle indirect code objects, use dr_get_proc_address_ex().