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- /*
- rawdata.c - implementation of the elf_rawdata(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>
-
- Elf_Data*
- elf_rawdata(Elf_Scn *scn, Elf_Data *data) {
- Scn_Data *sd;
- Elf *elf;
-
- if (!scn) {
- return NULL;
- }
- elf_assert(scn->s_magic == SCN_MAGIC);
- elf = scn->s_elf;
- elf_assert(elf);
- elf_assert(elf->e_magic == ELF_MAGIC);
- if (!elf->e_readable) {
- return NULL;
- }
- else if (scn->s_index == SHN_UNDEF || scn->s_type == SHT_NULL) {
- seterr(ERROR_NULLSCN);
- }
- else if (data) {
- return NULL;
- }
- else if ((sd = scn->s_rawdata)) {
- return (Elf_Data*)sd;
- }
- else if (!(sd = (Scn_Data*)malloc(sizeof(*sd)))) {
- seterr(ERROR_MEM_SCNDATA);
- }
- else {
- *sd = _elf_data_init;
- sd->sd_scn = scn;
- sd->sd_freeme = 1;
- sd->sd_data.d_size = scn->s_size;
- sd->sd_data.d_version = _elf_version;
- scn->s_rawdata = sd;
- if (scn->s_offset < 0 || scn->s_offset > elf->e_size) {
- seterr(ERROR_OUTSIDE);
- }
- else if (scn->s_type == SHT_NOBITS || !scn->s_size) {
- return (Elf_Data*)sd;
- }
- else if (scn->s_offset + scn->s_size > elf->e_size) {
- seterr(ERROR_TRUNC_SCN);
- }
- else if ((sd->sd_memdata = _elf_read(elf, NULL, scn->s_offset, scn->s_size))) {
- sd->sd_data.d_buf = sd->sd_memdata;
- sd->sd_free_data = 1;
- return (Elf_Data*)sd;
- }
- scn->s_rawdata = NULL;
- free(sd);
- }
- return NULL;
- }
-