diff options
Diffstat (limited to 'elf/dl-version.c')
| -rw-r--r-- | elf/dl-version.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/elf/dl-version.c b/elf/dl-version.c index cda0889..d9ec44e 100644 --- a/elf/dl-version.c +++ b/elf/dl-version.c @@ -23,6 +23,8 @@ #include <string.h> #include <ldsodefs.h> #include <_itoa.h> +#include <gnu/lib-names.h> +#include <libc-early-init.h> #include <assert.h> @@ -359,6 +361,22 @@ _dl_check_map_versions (struct link_map *map, int verbose, int trace_mode) } } + /* Detect a libc.so loaded into this namespace. The + __libc_early_init lookup below means that we have to do this + after parsing the version data. */ + if (GL(dl_ns)[map->l_ns].libc_map == NULL + && map->l_info[DT_SONAME] != NULL + && strcmp (((const char *) D_PTR (map, l_info[DT_STRTAB]) + + map->l_info[DT_SONAME]->d_un.d_val), LIBC_SO) == 0) + { + /* Look up this symbol early to trigger a mismatch error before + relocation (which may call IFUNC resolvers, and those can + have an internal ABI dependency). */ + GL(dl_ns)[map->l_ns].libc_map_early_init + = _dl_lookup_libc_early_init (map); + GL(dl_ns)[map->l_ns].libc_map = map; + } + /* When there is a DT_VERNEED entry with libc.so on DT_NEEDED, issue an error if there is a DT_RELR entry without GLIBC_ABI_DT_RELR dependency. */ |