/*
 * Getting started with libelf.
 *
 * $Id: prog1.txt 2133 2011-11-10 08:28:22Z jkoshy $
 */

#include <err.h>
#include <fcntl.h>
#include <libelf.h> @\co{1}@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int
main(int argc, char **argv)
{
    int fd;
    Elf *e; @\co{2}@
    char *k;
    Elf_Kind ek; @\co{3}@

    if (argc != 2)
        errx(EXIT_FAILURE, "usage: %s file-name", argv[0]);

    if (elf_version(EV_CURRENT) == EV_NONE) @\co{4}@
        errx(EXIT_FAILURE, "ELF library initialization "
            "failed: %s", elf_errmsg(-1));

    if ((fd = open(argv[1], O_RDONLY, 0)) < 0)
        err(EXIT_FAILURE, "open \%s\" failed", argv[1]);

    if ((e = elf_begin(fd, ELF_C_READ@\co{5}@, NULL)) == NULL)
        errx(EXIT_FAILURE, "elf_begin() failed: %s.",
            elf_errmsg(-1));  @\co{6}@

    ek = elf_kind(e); @\co{7}@

    switch (ek) {
    case ELF_K_AR:
        k = "ar(1) archive";
        break;
    case ELF_K_ELF:
        k = "elf object";
        break;
    case ELF_K_NONE:
        k = "data";
        break;
    default:
        k = "unrecognized";
    }

    (void) printf("%s: %s\n", argv[1], k);

    (void) elf_end(e); @\co{8}@
    (void) close(fd);

    exit(EXIT_SUCCESS);
}