/* Resolve conflicts against already prelinked libraries.

   Copyright (C) 2001-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public License as

   published by the Free Software Foundation; either version 2.1 of the

   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; see the file COPYING.LIB.  If

   not, see <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <libintl.h>

#include <stdlib.h>

#include <unistd.h>

#include <ldsodefs.h>

#include <sys/mman.h>

#include <sys/param.h>

#include <sys/types.h>

#include "dynamic-link.h"

void

_dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict,

		       ElfW(Rela) *conflictend)

{

#if ! ELF_MACHINE_NO_RELA

  if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_RELOC))

    _dl_debug_printf ("\nconflict processing: %s\n", DSO_FILENAME (l->l_name));

  {

    /* Do the conflict relocation of the object and library GOT and other

       data.  */

    /* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code.  */

#define RESOLVE_MAP(ref, version, flags) (*ref = NULL, NULL)

#define RESOLVE(ref, version, flags) (*ref = NULL, 0)

#define RESOLVE_CONFLICT_FIND_MAP(map, r_offset) \

  do {									      \

    while ((resolve_conflict_map->l_map_end < (ElfW(Addr)) (r_offset))	      \

	   || (resolve_conflict_map->l_map_start > (ElfW(Addr)) (r_offset)))  \

      resolve_conflict_map = resolve_conflict_map->l_next;		      \

									      \

    (map) = resolve_conflict_map;					      \

  } while (0)

    /* Prelinking makes no sense for anything but the main namespace.  */

    assert (l->l_ns == LM_ID_BASE);

    struct link_map *resolve_conflict_map __attribute__ ((__unused__))

      = GL(dl_ns)[LM_ID_BASE]._ns_loaded;

#include "dynamic-link.h"

    /* Override these, defined in dynamic-link.h.  */

#undef CHECK_STATIC_TLS

#define CHECK_STATIC_TLS(ref_map, sym_map) ((void) 0)

#undef TRY_STATIC_TLS

#define TRY_STATIC_TLS(ref_map, sym_map) (0)

    GL(dl_num_cache_relocations) += conflictend - conflict;

    for (; conflict < conflictend; ++conflict)

      elf_machine_rela (l, conflict, NULL, NULL, (void *) conflict->r_offset,

			0);

  }

#endif

}