1 /* 2 getscn.c - implementation of the elf_getscn(3) function. 3 Copyright (C) 1995 - 1998 Michael Riepe 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Library General Public 7 License as published by the Free Software Foundation; either 8 version 2 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 18 */ 19 20 #include <private.h> 21 22 #ifndef lint 23 static const char rcsid[] = "@(#) $Id: getscn.c,v 1.7 2008/05/23 08:15:35 michael Exp $"; 24 #endif /* lint */ 25 26 Elf_Scn* 27 elf_getscn(Elf *elf, size_t index) { 28 Elf_Scn *scn; 29 30 if (!elf) { 31 return NULL; 32 } 33 elf_assert(elf->e_magic == ELF_MAGIC); 34 if (elf->e_kind != ELF_K_ELF) { 35 seterr(ERROR_NOTELF); 36 } 37 else if (elf->e_ehdr || _elf_cook(elf)) { 38 for (scn = elf->e_scn_1; scn; scn = scn->s_link) { 39 elf_assert(scn->s_magic == SCN_MAGIC); 40 elf_assert(scn->s_elf == elf); 41 if (scn->s_index == index) { 42 return scn; 43 } 44 } 45 seterr(ERROR_NOSUCHSCN); 46 } 47 return NULL; 48 } 49