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- /*
- getarsym.c - implementation of the elf_getarsym(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>
- #include <byteswap.h>
-
- Elf_Arsym*
- elf_getarsym(Elf *elf, size_t *ptr) {
- Elf_Arsym *syms;
- size_t count;
- size_t tmp;
- size_t i;
- char *s;
- char *e;
-
- if (!ptr) {
- ptr = &tmp;
- }
- *ptr = 0;
- if (!elf) {
- return NULL;
- }
- elf_assert(elf->e_magic == ELF_MAGIC);
- if (elf->e_kind != ELF_K_AR) {
- seterr(ERROR_NOTARCHIVE);
- return NULL;
- }
- if (elf->e_symtab && !elf->e_free_syms) {
- if (elf->e_symlen < 4) {
- seterr(ERROR_SIZE_ARSYMTAB);
- return NULL;
- }
- count = __load_u32M(elf->e_symtab);
- if (elf->e_symlen < 4 * (count + 1)) {
- seterr(ERROR_SIZE_ARSYMTAB);
- return NULL;
- }
- if (!(syms = (Elf_Arsym*)malloc((count + 1) * sizeof(*syms)))) {
- seterr(ERROR_MEM_ARSYMTAB);
- return NULL;
- }
- s = elf->e_symtab + 4 * (count + 1);
- e = elf->e_symtab + elf->e_symlen;
- for (i = 0; i < count; i++, s++) {
- syms[i].as_name = s;
- while (s < e && *s) {
- s++;
- }
- if (s >= e) {
- seterr(ERROR_SIZE_ARSYMTAB);
- free(syms);
- return NULL;
- }
- elf_assert(!*s);
- syms[i].as_hash = elf_hash(syms[i].as_name);
- syms[i].as_off = __load_u32M(elf->e_symtab + 4 * (i + 1));
- }
- syms[count].as_name = NULL;
- syms[count].as_hash = ~0UL;
- syms[count].as_off = 0;
- elf->e_symtab = (char*)syms;
- elf->e_symlen = count + 1;
- elf->e_free_syms = 1;
- }
- *ptr = elf->e_symlen;
- return (Elf_Arsym*)elf->e_symtab;
- }
-