[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, 2 insertions, 15 deletions

diff --git a/elf/dl-support.c b/elf/dl-support.c
index c5976cd401..d8957ce308 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -67,10 +67,8 @@ const char *_dl_origin_path;
 /* Nonzero if runtime lookup should not update the .got/.plt.  */
 int _dl_bind_not;
 
-/* Initially empty list of loaded objects.  */
-struct link_map *_dl_loaded;
-/* Number of object in the _dl_loaded list.  */
-unsigned int _dl_nloaded;
+/* Namespace information.  */
+struct link_namespaces _dl_ns[DL_NNS];
 
 /* Incremented whenever something may have been added to dl_loaded. */
 unsigned long long _dl_load_adds;
@@ -79,12 +77,6 @@ unsigned long long _dl_load_adds;
    main application but here we don't have something like this.  So
    create a fake scope containing nothing.  */
 struct r_scope_elem _dl_initial_searchlist;
-/* Variable which can be used in lookup to process the global scope.  */
-struct r_scope_elem *_dl_global_scope[2] = { &_dl_initial_searchlist, NULL };
-/* This is a global pointer to this structure which is public.  It is
-   used by dlopen/dlclose to add and remove objects from what is regarded
-   to be the global scope.  */
-struct r_scope_elem *_dl_main_searchlist = &_dl_initial_searchlist;
 
 #ifndef HAVE_INLINED_SYSCALLS
 /* Nonzero during startup.  */
@@ -109,11 +101,6 @@ hp_timing_t _dl_cpuclock_offset;
 void (*_dl_init_static_tls) (struct link_map *) = &_dl_nothread_init_static_tls;
 #endif
 
-/* This is zero at program start to signal that the global scope map is
-   allocated by rtld.  Later it keeps the size of the map.  It might be
-   reset if in _dl_close if the last global object is removed.  */
-size_t _dl_global_scope_alloc;
-
 size_t _dl_pagesize;
 
 unsigned int _dl_osversion;