aboutsummaryrefslogtreecommitdiff
path: root/elf/dl-lookup.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2004-10-14 02:08:23 +0000
committerUlrich Drepper <drepper@redhat.com>2004-10-14 02:08:23 +0000
commitc0f62c56788c48b9fb36dc609c0a9f9db3667306 (patch)
tree79c7e9692bb59dc90e4466e238cd4578c2d5c8f3 /elf/dl-lookup.c
parent8e9185fb1c0294d2eb4bee0797d7e1c2850111ea (diff)
downloadglibc-c0f62c56788c48b9fb36dc609c0a9f9db3667306.zip
glibc-c0f62c56788c48b9fb36dc609c0a9f9db3667306.tar.gz
glibc-c0f62c56788c48b9fb36dc609c0a9f9db3667306.tar.bz2
[BZ #77]
Update. Add support for namespaces in the dynamic linker. * dlfcn/Makefile (libdl-routines): Add dlmopen. * dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen. * dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM. Declare dlmopen. Document RTLD_DI_LMID. * dlfcn/dlinfo.c: Handle RTLD_DI_LMID. * dlfcn/dlmopen.c: New file. * dlfcn/dlopen.c: Pass new parameter to _dl_open. * dlfcn/dlopenold.c: Likewise. * elf/dl-addr.c: Adjust for removal of GL(dl_loaded). * elf/dl-caller.c: Likewise. * elf/dl-close.c: Likewise. * elf/dl-conflict.c: Likewise. * elf/dl-debug.c: Likewise. * elf/dl-lookup.c: Likewise. * elf/dl-sym.c: Likewise. * elf/dl-version.c: Likewise. * elf/do-lookup.h: Likewise. * elf/rtld.c: Likewise. * sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise. * elf/dl-depsc: Likewise. Add new parameter to _dl_map_object. * elf/dl-fini.c: Call destructors in all namespaces. * elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of GL(dl_loaded). * elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal of GL(dl_loaded). * elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second time. Reuse the one from the main namespace in all others. Pass new parameter to _dl_new_object. Adjust for removal of GL(dl_loaded). * elf/dl-object.c: Take new parameter. Use it to initialize l_ns. Adjust for removal of GL(dl_loaded). * elf/dl-open.c (_dl_open): Take new parameter. Adjust for removal of GL(dl_loaded). * elf/dl-support.c: Replace global _dl_loaded etc variables with _dl_ns variable. * include/dlfcn.h: Adjust prototype of _dl_open. Define __LM_ID_CALLER. * include/link.h: Add l_real, l_ns, and l_direct_opencount elements. * sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is using TLS we need memory appropriate to the number of namespaces. * sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded, _dl_nloaded, _dl_global_scope, _dl_main_searchlist, and _dl_global_scope_alloc with _dl_ns element. Define DL_NNS. Adjust prototypes of _dl_map_object and member in rtld_global_ro. * malloc/malloc.c: Include <dlfcn.h>. * malloc/arena.c (ptmalloc_init): If libc is not in primary namespace, never use brk. * elf/Makefile: Add rules to build and run tst-dlmopen1 and tst-dlmopen2. * elf/tst-dlmopen1.c: New file. * elf/tst-dlmopen1mod.c: New file. * elf/tst-dlmopen2.c: New file. * elf/dl-close.c: Improve reference counting by tracking direct loads. * elf/dl-lookup.c (add_dependency): Likewise. * elf/dl-open.c (dl_open_worker): Likewise. * elf/rtld.c (dl_main): Likewise. 2004-09-09 GOTO Masanori <gotom@debian.or.jp> [BZ #77] * elf/dl-close.c: Count down l_opencount to check not only for l_reldeps, but also l_initfini. 2004-10-13 Ulrich Drepper <drepper@redhat.com>
Diffstat (limited to 'elf/dl-lookup.c')
-rw-r--r--elf/dl-lookup.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index d2a6976..fdb0769 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -137,7 +137,7 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
reference is still available. There is a brief period in
which the object could have been removed since we found the
definition. */
- runp = GL(dl_loaded);
+ runp = GL(dl_ns)[undef_map->l_ns]._ns_loaded;
while (runp != NULL && runp != map)
runp = runp->l_next;
@@ -182,13 +182,18 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
for (list = map->l_initfini; *list != NULL; ++list)
++(*list)->l_opencount;
+ /* As if it is opened through _dl_open. */
+ ++map->l_direct_opencount;
+
/* Display information if we are debugging. */
if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0))
_dl_debug_printf ("\
-\nfile=%s; needed by %s (relocation dependency)\n\n",
+\nfile=%s [%lu]; needed by %s [%lu] (relocation dependency)\n\n",
map->l_name[0] ? map->l_name : rtld_progname,
+ map->l_ns,
undef_map->l_name[0]
- ? undef_map->l_name : rtld_progname);
+ ? undef_map->l_name : rtld_progname,
+ undef_map->l_ns);
}
else
/* Whoa, that was bad luck. We have to search again. */
@@ -408,8 +413,8 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
struct sym_val val = { NULL, NULL };
if ((GLRO(dl_trace_prelink_map) == NULL
- || GLRO(dl_trace_prelink_map) == GL(dl_loaded))
- && undef_map != GL(dl_loaded))
+ || GLRO(dl_trace_prelink_map) == GL(dl_ns)[LM_ID_BASE]._ns_loaded)
+ && undef_map != GL(dl_ns)[LM_ID_BASE]._ns_loaded)
{
const unsigned long int hash = _dl_elf_hash (undef_name);
@@ -421,12 +426,12 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
conflict = 1;
}
-#ifdef USE_TLS
+# ifdef USE_TLS
if (value->s
&& (__builtin_expect (ELFW(ST_TYPE) (value->s->st_info)
== STT_TLS, 0)))
type_class = 4;
-#endif
+# endif
if (conflict
|| GLRO(dl_trace_prelink_map) == undef_map