12de3b87aSKai Wang /*-
22de3b87aSKai Wang * Copyright (c) 2006,2008-2009,2011 Joseph Koshy
32de3b87aSKai Wang * All rights reserved.
42de3b87aSKai Wang *
52de3b87aSKai Wang * Redistribution and use in source and binary forms, with or without
62de3b87aSKai Wang * modification, are permitted provided that the following conditions
72de3b87aSKai Wang * are met:
82de3b87aSKai Wang * 1. Redistributions of source code must retain the above copyright
92de3b87aSKai Wang * notice, this list of conditions and the following disclaimer.
102de3b87aSKai Wang * 2. Redistributions in binary form must reproduce the above copyright
112de3b87aSKai Wang * notice, this list of conditions and the following disclaimer in the
122de3b87aSKai Wang * documentation and/or other materials provided with the distribution.
132de3b87aSKai Wang *
142de3b87aSKai Wang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
152de3b87aSKai Wang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
162de3b87aSKai Wang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
172de3b87aSKai Wang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
182de3b87aSKai Wang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
192de3b87aSKai Wang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
202de3b87aSKai Wang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
212de3b87aSKai Wang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
222de3b87aSKai Wang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
232de3b87aSKai Wang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
242de3b87aSKai Wang * SUCH DAMAGE.
252de3b87aSKai Wang */
262de3b87aSKai Wang
272de3b87aSKai Wang #include <assert.h>
282de3b87aSKai Wang #include <libelf.h>
292de3b87aSKai Wang #include <stdlib.h>
302de3b87aSKai Wang
312de3b87aSKai Wang #include "_libelf.h"
322de3b87aSKai Wang
332de3b87aSKai Wang #if ELFTC_HAVE_MMAP
342de3b87aSKai Wang #include <sys/mman.h>
352de3b87aSKai Wang #endif
362de3b87aSKai Wang
3767d97fe7SEd Maste ELFTC_VCSID("$Id: elf_end.c 3738 2019-05-05 21:49:06Z jkoshy $");
382de3b87aSKai Wang
392de3b87aSKai Wang int
elf_end(Elf * e)402de3b87aSKai Wang elf_end(Elf *e)
412de3b87aSKai Wang {
422de3b87aSKai Wang Elf *sv;
432de3b87aSKai Wang Elf_Scn *scn, *tscn;
442de3b87aSKai Wang
452de3b87aSKai Wang if (e == NULL || e->e_activations == 0)
462de3b87aSKai Wang return (0);
472de3b87aSKai Wang
482de3b87aSKai Wang if (--e->e_activations > 0)
492de3b87aSKai Wang return (e->e_activations);
502de3b87aSKai Wang
512de3b87aSKai Wang assert(e->e_activations == 0);
522de3b87aSKai Wang
532de3b87aSKai Wang while (e && e->e_activations == 0) {
542de3b87aSKai Wang switch (e->e_kind) {
552de3b87aSKai Wang case ELF_K_AR:
562de3b87aSKai Wang /*
572de3b87aSKai Wang * If we still have open child descriptors, we
582de3b87aSKai Wang * need to defer reclaiming resources till all
592de3b87aSKai Wang * the child descriptors for the archive are
602de3b87aSKai Wang * closed.
612de3b87aSKai Wang */
622de3b87aSKai Wang if (e->e_u.e_ar.e_nchildren > 0)
632de3b87aSKai Wang return (0);
642de3b87aSKai Wang break;
652de3b87aSKai Wang case ELF_K_ELF:
662de3b87aSKai Wang /*
672de3b87aSKai Wang * Reclaim all section descriptors.
682de3b87aSKai Wang */
698c953901SMark Johnston RB_FOREACH_SAFE(scn, scntree, &e->e_u.e_elf.e_scn, tscn)
702de3b87aSKai Wang scn = _libelf_release_scn(scn);
712de3b87aSKai Wang break;
722de3b87aSKai Wang case ELF_K_NUM:
732de3b87aSKai Wang assert(0);
742de3b87aSKai Wang default:
752de3b87aSKai Wang break;
762de3b87aSKai Wang }
772de3b87aSKai Wang
782de3b87aSKai Wang if (e->e_rawfile) {
792de3b87aSKai Wang if (e->e_flags & LIBELF_F_RAWFILE_MALLOC)
802de3b87aSKai Wang free(e->e_rawfile);
812de3b87aSKai Wang #if ELFTC_HAVE_MMAP
822de3b87aSKai Wang else if (e->e_flags & LIBELF_F_RAWFILE_MMAP)
832de3b87aSKai Wang (void) munmap(e->e_rawfile, (size_t) e->e_rawsize);
842de3b87aSKai Wang #endif
852de3b87aSKai Wang }
862de3b87aSKai Wang
872de3b87aSKai Wang sv = e;
882de3b87aSKai Wang if ((e = e->e_parent) != NULL)
892de3b87aSKai Wang e->e_u.e_ar.e_nchildren--;
902de3b87aSKai Wang _libelf_release_elf(sv);
912de3b87aSKai Wang }
922de3b87aSKai Wang
932de3b87aSKai Wang return (0);
942de3b87aSKai Wang }
95