diff options
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index 1e5ad5073d..5e714af483 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1467,21 +1467,48 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, const char *cached = _dl_load_cache_lookup (name); if (cached) { - fd = __open (cached, O_RDONLY); - if (fd != -1) + /* If the loader has the DF_1_NODEFLIB flag set we must not + use a cache entry from any of these directories. */ + if (__builtin_expect (loader->l_flags_1 & DF_1_NODEFLIB, 0)) + { + const char *dirp = system_dirs; + int cnt = 0; + + do + { + if (memcmp (cached, dirp, system_dirs_len[cnt]) == 0) + { + /* The prefix matches. Don't use the entry. */ + cached = NULL; + break; + } + + dirp += system_dirs_len[cnt] + 1; + ++cnt; + } + while (cnt < (sizeof (system_dirs_len) + / sizeof (system_dirs_len[0]))); + } + + if (cached) { - realname = local_strdup (cached); - if (realname == NULL) + fd = __open (cached, O_RDONLY); + if (fd != -1) { - __close (fd); - fd = -1; + realname = local_strdup (cached); + if (realname == NULL) + { + __close (fd); + fd = -1; + } } } } } /* Finally, try the default path. */ - if (fd == -1) + if (fd == -1 + && __builtin_expect (!(loader->l_flags_1 & DF_1_NODEFLIB), 1)) fd = open_path (name, namelen, preloaded, &rtld_search_dirs, &realname); |