1 /*

     2 next.c - implementation of the elf_next(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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    18 */

    19 

    20 #include <private.h>

    21 

    22 #ifndef lint

    23 static const char rcsid[] = "@(#) $Id: next.c,v 1.6 2005/05/21 15:39:25 michael Exp $";

    24 #endif /* lint */

    25 

    26 Elf_Cmd

    27 elf_next(Elf *elf) {

    28     if (!elf) {

    29 	return ELF_C_NULL;

    30     }

    31     elf_assert(elf->e_magic == ELF_MAGIC);

    32     if (!elf->e_parent) {

    33 	return ELF_C_NULL;

    34     }

    35     elf_assert(elf->e_parent->e_magic == ELF_MAGIC);

    36     elf_assert(elf->e_parent->e_kind == ELF_K_AR);

    37     elf->e_parent->e_off = elf->e_next;

    38     if (elf->e_next == elf->e_parent->e_size) {

    39 	return ELF_C_NULL;

    40     }

    41     return ELF_C_READ;

    42 }