Line data    Source code

       1             : /* Retrieve uninterpreted file contents.
       2             :    Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Contributed by Ulrich Drepper <drepper@redhat.com>, 1998.
       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             : char *
      41          29 : elf_rawfile (Elf *elf, size_t *ptr)
      42             : {
      43             :   char *result;
      44             : 
      45          29 :   if (elf == NULL)
      46             :     {
      47             :       /* No valid descriptor.  */
      48           0 :       __libelf_seterrno (ELF_E_INVALID_HANDLE);
      49           0 :     error_out:
      50           0 :       if (ptr != NULL)
      51           0 :         *ptr = 0;
      52             :       return NULL;
      53             :     }
      54             : 
      55             :   /* If the file is not mmap'ed and not previously loaded, do it now.  */
      56          29 :   if (elf->map_address == NULL && __libelf_readall (elf) == NULL)
      57             :     goto error_out;
      58             : 
      59             :   rwlock_rdlock (elf->lock);
      60          29 :   if (ptr != NULL)
      61          29 :     *ptr = elf->maximum_size;
      62             : 
      63          29 :   result = (char *) elf->map_address + elf->start_offset;
      64             :   rwlock_unlock (elf->lock);
      65             : 
      66          29 :   return result;
      67             : }