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- /*
- end.c - implementation of the elf_end(3) function.
- Copyright (C) 1995 Michael Riepe <riepe@ifwsn4.ifw.uni-hannover.de>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
- #include <private.h>
-
- static void
- _elf_free(void *ptr) {
- if (ptr) {
- free(ptr);
- }
- }
-
- static void
- _elf_free_scns(Elf *elf, Elf_Scn *scn) {
- Scn_Data *sd, *tmp;
- Elf_Scn *freescn;
-
- for (freescn = NULL; scn; scn = scn->s_link) {
- elf_assert(scn->s_magic == SCN_MAGIC);
- elf_assert(scn->s_elf == elf);
- for (sd = scn->s_data_1; sd; sd = tmp) {
- tmp = sd->sd_link;
- if (sd->sd_free_data) {
- _elf_free(sd->sd_memdata);
- }
- if (sd->sd_freeme) {
- free(sd);
- }
- }
- if ((sd = scn->s_rawdata)) {
- if (sd->sd_free_data) {
- _elf_free(sd->sd_memdata);
- }
- if (sd->sd_freeme) {
- free(sd);
- }
- }
- if (scn->s_freeme) {
- _elf_free(freescn);
- freescn = scn;
- }
- }
- _elf_free(freescn);
- }
-
- int
- elf_end(Elf *elf) {
- Elf **siblings;
-
- if (!elf) {
- return 0;
- }
- elf_assert(elf->e_magic == ELF_MAGIC);
- if (--elf->e_count) {
- return elf->e_count;
- }
- if (elf->e_parent) {
- elf_assert(elf->e_parent->e_magic == ELF_MAGIC);
- elf_assert(elf->e_parent->e_kind == ELF_K_AR);
- siblings = &elf->e_parent->e_members;
- while (*siblings) {
- if (*siblings == elf) {
- *siblings = elf->e_link;
- break;
- }
- siblings = &(*siblings)->e_link;
- }
- elf_end(elf->e_parent);
- _elf_free(elf->e_arhdr);
- }
- else {
- _elf_free(elf->e_data);
- }
- _elf_free_scns(elf, elf->e_scn_1);
- if (elf->e_rawdata != elf->e_data) {
- _elf_free(elf->e_rawdata);
- }
- if (elf->e_free_syms) {
- _elf_free(elf->e_symtab);
- }
- if (elf->e_free_ehdr) {
- _elf_free(elf->e_ehdr);
- }
- if (elf->e_free_phdr) {
- _elf_free(elf->e_phdr);
- }
- if (elf->e_free_shdr) {
- _elf_free(elf->e_shdr);
- }
- free(elf);
- return 0;
- }
-