[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>

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