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#include <stdio.h>
#include <libelf/libelf.h>
#include <libelf/gelf.h>
void printHeader(Elf *e)
{
GElf_Ehdr ehdr;
int elfclass;
size_t shdrnum, shdrstrndx, phdrnum;
printf("ELF header:\n");
elfclass = gelf_getclass(e);
if (elfclass == ELFCLASSNONE) {
fprintf(stderr, "getclass() failed: %s\n", elf_errmsg(-1));
}
printf(" * %d-bit ELF object\n", elfclass == ELFCLASS32 ? 32 : 64);
if (!gelf_getehdr(e, &ehdr)) {
fprintf(stderr, "getehdr() failed: %s.", elf_errmsg(-1));
return;
}
printf(" * type machine version entry phoff shoff flags ehsize phentsize shentsize\n");
printf(" %8jx %8jx %8jx %8jx %8jx %8jx %8jx %8jx %9jx %9jx\n",
(uintmax_t) ehdr.e_type,
(uintmax_t) ehdr.e_machine,
(uintmax_t) ehdr.e_version,
(uintmax_t) ehdr.e_entry,
(uintmax_t) ehdr.e_phoff,
(uintmax_t) ehdr.e_shoff,
(uintmax_t) ehdr.e_flags,
(uintmax_t) ehdr.e_ehsize,
(uintmax_t) ehdr.e_phentsize,
(uintmax_t) ehdr.e_shentsize);
if (elf_getshdrnum(e, &shdrnum) != 0) {
fprintf(stderr, "getshdrnum() failed: %s\n", elf_errmsg(-1));
} else {
printf(" * (shnum): %u\n", shdrnum);
}
if (elf_getshdrstrndx(e, &shdrstrndx) != 0) {
fprintf(stderr, "getshdrstrndx() failed: %s\n", elf_errmsg(-1));
} else {
printf(" * (shstrndx): %u\n", shdrstrndx);
}
if (elf_getphdrnum(e, &phdrnum) != 0) {
fprintf(stderr, "getphdrnum() failed: %s\n", elf_errmsg(-1));
} else {
printf(" * (phnum): %u\n", phdrnum);
}
printf("\n");
}
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