lib/libelf/elf_update.c

85 _libelf_compute_section_extents(Elf *e, Elf_Scn *s, off_t rc)
257 	sh_offset = roundup(rc, sh_align);
333 _libelf_resync_sections(Elf *e, off_t rc)
354 		if (_libelf_compute_section_extents(e, s, rc) == 0)
360 		if (s->s_offset + s->s_size < (size_t) rc) {
371 			rc = s->s_offset + s->s_size;
397 	return (rc);
407 	off_t rc, phoff, shoff;
412 	rc = 0;
488 	rc += _libelf_fsize(ELF_T_EHDR, ec, eh_version, (size_t) 1);
503 			if (rc > phoff) {
514 			phoff = roundup(rc, align);
516 		rc = phoff + fsz;
530 	if ((rc = _libelf_resync_sections(e, rc)) < 0)
551 			shoff = roundup(rc, align);
553 		if (shoff + fsz * shnum > (size_t) rc)
554 			rc = shoff + fsz * shnum;
579 	return (rc);
587 _libelf_write_scn(Elf *e, char *nf, Elf_Scn *s, off_t rc)
608 		return (rc);
630 			if ((uint64_t) rc < sh_off + d->d_off)
631 				(void) memset(nf + rc,
633 				    d->d_off - rc);
634 			rc = sh_off + d->d_off;
640 			(void) memcpy(nf + rc,
643 			rc += d->d_size;
646 		return (rc);
661 		if ((uint64_t) rc < sh_off + d->d_off)
662 			(void) memset(nf + rc,
663 			    LIBELF_PRIVATE(fillchar), sh_off + d->d_off - rc);
665 		rc = sh_off + d->d_off;
675 		dst.d_buf    = nf + rc;
682 		rc += fsz;
685 	return ((off_t) rc);
709 	off_t maxrc, rc;
760 	rc = 0;
762 	dst.d_buf     = newfile + rc;
769 	rc += fsz;
776 		assert((unsigned) rc <= phoff);
791 		if ((uint64_t) rc < phoff)
792 			(void) memset(newfile + rc,
793 			    LIBELF_PRIVATE(fillchar), phoff - rc);
795 		dst.d_buf = newfile + rc;
801 		rc = phoff + fsz;
809  		if ((rc = _libelf_write_scn(e, newfile, scn, rc)) < 0)
819 		if ((uint64_t) rc < shoff)
820 			(void) memset(newfile + rc,
821 			    LIBELF_PRIVATE(fillchar), shoff - rc);
823 		maxrc = rc;
824 		rc = shoff;
826 		assert(rc % _libelf_falign(ELF_T_SHDR, ec) == 0);
841 			dst.d_buf = newfile + rc + scn->s_ndx * fsz;
848 		rc += e->e_u.e_elf.e_nscn * fsz;
849 		if (maxrc > rc)
850 			rc = maxrc;
853 	assert(rc == newsize);
909 	return (rc);
921 	off_t rc;
923 	rc = (off_t) -1;
928 		return (rc);
933 		return (rc);
941 		return (rc);
944 	if ((rc = _libelf_resync_elf(e)) < 0)
945 		return (rc);
948 		return (rc);
967 	return (_libelf_write_elf(e, rc));