diff options
Diffstat (limited to 'elf/dl-conflict.c')
-rw-r--r-- | elf/dl-conflict.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/elf/dl-conflict.c b/elf/dl-conflict.c new file mode 100644 index 0000000000..5426a5ad44 --- /dev/null +++ b/elf/dl-conflict.c @@ -0,0 +1,66 @@ +/* Resolve conflicts against already prelinked libraries. + Copyright (C) 2001 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <libintl.h> +#include <stdlib.h> +#include <unistd.h> +#include <ldsodefs.h> +#include <sys/mman.h> +#include <sys/types.h> +#include "dynamic-link.h" + +extern unsigned long int _dl_num_cache_relocations; /* in dl-lookup.c */ + +void +_dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict, + ElfW(Rela) *conflictend) +{ + if (__builtin_expect (_dl_debug_mask & DL_DEBUG_RELOC, 0)) + _dl_printf ("\nconflict processing: %s\n", + l->l_name[0] ? l->l_name : _dl_argv[0]); + + { + /* 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, 0) +#define RESOLVE(ref, version, flags) (*ref = NULL, 0) +#define RESOLVE_CONFLICT_FIND_MAP(map, r_offset) \ +do \ + { \ + while (resolve_conflict_map->l_map_end < (r_offset) \ + || resolve_conflict_map->l_map_start > (r_offset)) \ + resolve_conflict_map \ + = resolve_conflict_map->l_next; \ + (map) = resolve_conflict_map; \ + } while (0) + + struct link_map *resolve_conflict_map = _dl_loaded; + +#include "dynamic-link.h" + + _dl_num_cache_relocations += conflictend - conflict; + + for (; conflict < conflictend; ++conflict) + elf_machine_rela (l, conflict, NULL, NULL, (void *) conflict->r_offset); + } +} |