Line data    Source code

       1             : /* Manipulate ELF header flags.
       2             :    Copyright (C) 1999, 2000, 2001, 2002, 2015 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Written by Ulrich Drepper <drepper@redhat.com>, 1999.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <libelf.h>
      35             : #include <stddef.h>
      36             : 
      37             : #include "libelfP.h"
      38             : 
      39             : 
      40             : unsigned int
      41           4 : elf_flagehdr (Elf *elf, Elf_Cmd cmd, unsigned int flags)
      42             : {
      43             :   unsigned int result;
      44             : 
      45           4 :   if (elf == NULL)
      46             :     return 0;
      47             : 
      48           4 :   if (unlikely (elf->kind != ELF_K_ELF))
      49             :     {
      50           0 :       __libelf_seterrno (ELF_E_INVALID_HANDLE);
      51           0 :       return 0;
      52             :     }
      53             : 
      54           4 :   if (likely (cmd == ELF_C_SET))
      55           4 :     result = (elf->state.elf.ehdr_flags |= (flags & ELF_F_DIRTY));
      56           0 :   else if (cmd == ELF_C_CLR)
      57           0 :     result = (elf->state.elf.ehdr_flags &= ~(flags & ELF_F_DIRTY));
      58             :   else
      59             :     {
      60           0 :       __libelf_seterrno (ELF_E_INVALID_COMMAND);
      61           0 :       return 0;
      62             :     }
      63             : 
      64             :   return result;
      65             : }