89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 2006 Joseph Koshy
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/mman.h>
|
|
|
|
#include <assert.h>
|
|
#include <libelf.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "_libelf.h"
|
|
|
|
int
|
|
elf_end(Elf *e)
|
|
{
|
|
Elf *sv;
|
|
Elf_Scn *scn, *tscn;
|
|
|
|
if (e == NULL || e->e_activations == 0)
|
|
return (0);
|
|
|
|
if (--e->e_activations > 0)
|
|
return (e->e_activations);
|
|
|
|
assert(e->e_activations == 0);
|
|
|
|
while (e && e->e_activations == 0) {
|
|
switch (e->e_kind) {
|
|
case ELF_K_AR:
|
|
/*
|
|
* If we still have open child descriptors, we
|
|
* need to defer reclaiming resources till all
|
|
* the child descriptors for the archive are
|
|
* closed.
|
|
*/
|
|
if (e->e_u.e_ar.e_nchildren > 0)
|
|
return (0);
|
|
break;
|
|
case ELF_K_ELF:
|
|
/*
|
|
* Reclaim all section descriptors.
|
|
*/
|
|
STAILQ_FOREACH_SAFE(scn, &e->e_u.e_elf.e_scn, s_next, tscn)
|
|
scn = _libelf_release_scn(scn);
|
|
break;
|
|
case ELF_K_NUM:
|
|
assert(0);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (e->e_flags & LIBELF_F_MMAP)
|
|
(void) munmap(e->e_rawfile, e->e_rawsize);
|
|
|
|
sv = e;
|
|
if ((e = e->e_parent) != NULL)
|
|
e->e_u.e_ar.e_nchildren--;
|
|
sv = _libelf_release_elf(sv);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|