diff options
Diffstat (limited to 'elf/dl-load.c')
-rw-r--r-- | elf/dl-load.c | 47 |
1 files changed, 30 insertions, 17 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index ce3bd9f..9a6aae6 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -406,6 +406,9 @@ _dl_init_paths (void) { fake_path_list = (struct r_search_path_elem **) malloc ((nllp + 1) * sizeof (struct r_search_path_elem *)); + if (fake_path_list == NULL) + _dl_signal_error (ENOMEM, NULL, + "cannot create cache for search path"); (void) fillin_rpath (local_strdup (llp), fake_path_list, ":;", __libc_enable_secure ? trusted_dirs : NULL); @@ -901,23 +904,33 @@ _dl_map_object (struct link_map *loader, const char *name, int type, /* Look for this name among those already loaded. */ for (l = _dl_loaded; l; l = l->l_next) - if (l->l_opencount > 0 && _dl_name_match_p (name, l) || - /* If the requested name matches the soname of a loaded object, - use that object. */ - (l->l_info[DT_SONAME] && - ! strcmp (name, (const char *) (l->l_addr + - l->l_info[DT_STRTAB]->d_un.d_ptr + - l->l_info[DT_SONAME]->d_un.d_val)))) - { - /* The object is already loaded. - Just bump its reference count and return it. */ - const char *soname = (const char *) (l->l_addr + - l->l_info[DT_STRTAB]->d_un.d_ptr + - l->l_info[DT_SONAME]->d_un.d_val); - add_name_to_object (l, local_strdup (soname)); - ++l->l_opencount; - return l; - } + { + /* If the requested name matches the soname of a loaded object, + use that object. Elide this check for names that have not + yet been opened. */ + if (l->l_opencount <= 0) + continue; + if (!_dl_name_match_p (name, l)) + { + const char *soname; + + if (l->l_info[DT_SONAME] == NULL) + continue; + + soname = (const char *) (l->l_addr + + l->l_info[DT_STRTAB]->d_un.d_ptr + + l->l_info[DT_SONAME]->d_un.d_val); + if (strcmp (name, soname) != 0) + continue; + + /* We have a match on a new name -- cache it. */ + add_name_to_object (l, local_strdup (soname)); + } + + /* We have a match -- bump the reference count and return it. */ + ++l->l_opencount; + return l; + } if (strchr (name, '/') == NULL) { |