diff options
Diffstat (limited to 'REORG.TODO/elf/dl-conflict.c')
-rw-r--r-- | REORG.TODO/elf/dl-conflict.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/REORG.TODO/elf/dl-conflict.c b/REORG.TODO/elf/dl-conflict.c new file mode 100644 index 0000000000..3cbd07435e --- /dev/null +++ b/REORG.TODO/elf/dl-conflict.c @@ -0,0 +1,74 @@ +/* Resolve conflicts against already prelinked libraries. + Copyright (C) 2001-2017 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 +} |