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#include <stdio.h>
#include <libelf.h>
#include <gelf.h>
void elfu_fixupPhdrSelfRef(Elf *e)
{
GElf_Ehdr ehdr;
size_t i, n;
if (!gelf_getehdr(e, &ehdr)) {
fprintf(stderr, "gelf_getehdr() failed: %s.", elf_errmsg(-1));
return;
}
if (elf_getphdrnum(e, &n)) {
fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1));
}
for (i = 0; i < n; i++) {
GElf_Phdr phdr;
if (gelf_getphdr(e, i, &phdr) != &phdr) {
fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1));
continue;
}
if (phdr.p_type == PT_PHDR) {
phdr.p_offset = ehdr.e_phoff;
phdr.p_filesz = elf32_fsize(ELF_T_PHDR, n, EV_CURRENT);
phdr.p_memsz = phdr.p_filesz;
if (!gelf_update_phdr (e, i, &phdr)) {
fprintf(stderr, "gelf_update_ehdr() failed: %s\n", elf_errmsg(-1));
}
}
}
/* Tell libelf that phdrs have changed */
elf_flagphdr(e, ELF_C_SET, ELF_F_DIRTY);
}
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