elf_getident
idarray = elf_getident(elf, 0);
ident = elf_getident(elf, 0);
interpreter = elf_getident(elf, 0) + phdr.p_offset;
char *elf_getident(Elf *, size_t *);
if ((ehdr_ident = elf_getident(elf, NULL)) == NULL) {
ident = elf_getident(ess->es_elf, NULL);