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      1 /* Manipulate ELF file flags.
      2    Copyright (C) 1999, 2000, 2001, 2002 Red Hat, Inc.
      3    Written by Ulrich Drepper <drepper (at) redhat.com>, 1999.
      4 
      5    This program is free software; you can redistribute it and/or modify
      6    it under the terms of the GNU General Public License as published by
      7    the Free Software Foundation, version 2.
      8 
      9    This program is distributed in the hope that it will be useful,
     10    but WITHOUT ANY WARRANTY; without even the implied warranty of
     11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12    GNU General Public License for more details.
     13 
     14    You should have received a copy of the GNU General Public License
     15    along with this program; if not, write to the Free Software Foundation,
     16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
     17 
     18 #ifdef HAVE_CONFIG_H
     19 # include <config.h>
     20 #endif
     21 
     22 #include <libelf.h>
     23 #include <stddef.h>
     24 
     25 #include "libelfP.h"
     26 
     27 
     28 unsigned int
     29 elf_flagelf (elf, cmd, flags)
     30      Elf *elf;
     31      Elf_Cmd cmd;
     32      unsigned int flags;
     33 {
     34   unsigned int result;
     35 
     36   if (elf == NULL)
     37     return 0;
     38 
     39   if (unlikely (elf->kind != ELF_K_ELF))
     40     {
     41       __libelf_seterrno (ELF_E_INVALID_HANDLE);
     42       return 0;
     43     }
     44 
     45   if (likely (cmd == ELF_C_SET))
     46     result = (elf->flags
     47 	      |= (flags & (ELF_F_DIRTY | ELF_F_LAYOUT | ELF_F_PERMISSIVE)));
     48   else if (likely (cmd == ELF_C_CLR))
     49     result = (elf->flags
     50 	      &= ~(flags & (ELF_F_DIRTY | ELF_F_LAYOUT | ELF_F_PERMISSIVE)));
     51   else
     52     {
     53       __libelf_seterrno (ELF_E_INVALID_COMMAND);
     54       return 0;
     55     }
     56 
     57   return result;
     58 }
     59