Function elf_headers

util/cbfstool/elfheaders.c:581–612

Get the headers from the buffer. * Return -1 in the event of an error. * The section headers are optional; if NULL * is passed in for pshdr they won't be parsed. * We don't (yet) make payload parsing optional * because we've never seen a use case. */

 * because we've never seen a use case.
 */
int
elf_headers(const struct buffer *pinput,
	    Elf64_Ehdr *ehdr,
	    Elf64_Phdr **pphdr,
	    Elf64_Shdr **pshdr)
{
	struct parsed_elf pelf;
	int flags;

	flags = ELF_PARSE_PHDR;

	if (pshdr != NULL)
		flags |= ELF_PARSE_SHDR;

	if (parse_elf(pinput, &pelf, flags))
		return -1;

	/* Copy out the parsed elf header. */
	memcpy(ehdr, &pelf.ehdr, sizeof(*ehdr));

	*pphdr = calloc(ehdr->e_phnum, sizeof(Elf64_Phdr));
	memcpy(*pphdr, pelf.phdr, ehdr->e_phnum * sizeof(Elf64_Phdr));

	if (pshdr != NULL) {
		*pshdr = calloc(ehdr->e_shnum, sizeof(Elf64_Shdr));
		memcpy(*pshdr, pelf.shdr, ehdr->e_shnum * sizeof(Elf64_Shdr));
	}

	parsed_elf_destroy(&pelf);

	return 0;
}

/* ELF Writing  Support
 *