Line data    Source code

       1             : /* Check whether section can be stripped.
       2             :    Copyright (C) 2005, 2013 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             : 
       5             :    This file is free software; you can redistribute it and/or modify
       6             :    it under the terms of either
       7             : 
       8             :      * the GNU Lesser General Public License as published by the Free
       9             :        Software Foundation; either version 3 of the License, or (at
      10             :        your option) any later version
      11             : 
      12             :    or
      13             : 
      14             :      * the GNU General Public License as published by the Free
      15             :        Software Foundation; either version 2 of the License, or (at
      16             :        your option) any later version
      17             : 
      18             :    or both in parallel, as here.
      19             : 
      20             :    elfutils is distributed in the hope that it will be useful, but
      21             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23             :    General Public License for more details.
      24             : 
      25             :    You should have received copies of the GNU General Public License and
      26             :    the GNU Lesser General Public License along with this program.  If
      27             :    not, see <http://www.gnu.org/licenses/>.  */
      28             : 
      29             : #ifdef HAVE_CONFIG_H
      30             : # include <config.h>
      31             : #endif
      32             : 
      33             : #include <string.h>
      34             : #include "libeblP.h"
      35             : 
      36             : 
      37             : bool
      38     2432951 : ebl_section_strip_p (Ebl *ebl, const GElf_Shdr *shdr,
      39             :                      const char *name, bool remove_comment,
      40             :                      bool only_remove_debug)
      41             : {
      42             :   /* If only debug information should be removed check the name.  There
      43             :      is unfortunately no other way.  */
      44     2432951 :   if (unlikely (only_remove_debug))
      45             :     {
      46       66320 :       if (ebl_debugscn_p (ebl, name))
      47             :         return true;
      48             : 
      49       66180 :       if (shdr->sh_type == SHT_RELA || shdr->sh_type == SHT_REL)
      50             :         {
      51          60 :           Elf_Scn *scn_l = elf_getscn (ebl->elf, (shdr)->sh_info);
      52             :           GElf_Shdr shdr_mem_l;
      53          60 :           GElf_Shdr *shdr_l = gelf_getshdr (scn_l, &shdr_mem_l);
      54          60 :           if (shdr_l != NULL)
      55             :             {
      56             :               size_t shstrndx;
      57          60 :               if (elf_getshdrstrndx (ebl->elf, &shstrndx) != 0)
      58          15 :                 return false;
      59          60 :               const char *s_l = elf_strptr (ebl->elf, shstrndx,
      60          60 :                                             shdr_l->sh_name);
      61          60 :               if (s_l != NULL && ebl_debugscn_p (ebl, s_l))
      62             :                 return true;
      63             :             }
      64             :         }
      65             : 
      66             :       return false;
      67             :     }
      68             : 
      69     2366631 :   return SECTION_STRIP_P (shdr, name, remove_comment);
      70             : }