The
elf_kind() function returns one of the following values:
ELF_K_AR
The file associated with argument elf is an archive.
ELF_K_ELF
The file associated with argument elf is an ELF file.
ELF_K_NONE
The argument elf was NULL, or the ELF library could not determine the type of the file associated with argument elf, or an error occurred when processing.