1  /* Unmap a shared object's segments.  Generic version.
       2     Copyright (C) 2014-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C 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     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _DL_UNMAP_SEGMENTS_H
      20  #define _DL_UNMAP_SEGMENTS_H	1
      21  
      22  #include <link.h>
      23  #include <sys/mman.h>
      24  
      25  /* _dl_map_segments ensures that any whole pages in gaps between segments
      26     are filled in with PROT_NONE mappings.  So we can just unmap the whole
      27     range in one fell swoop.  */
      28  
      29  static __always_inline void
      30  _dl_unmap_segments (struct link_map *l)
      31  {
      32    __munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
      33  }
      34  
      35  #endif  /* dl-unmap-segments.h */