Update. cvs/fedora-glibc-20041018T2320

2004-10-18  Jakub Jelinek  <jakub@redhat.com>

	* elf/dl-libc.c (__libc_dlsym_private, __libc_register_dl_open_hook):
	New functions.
	(__libc_dlopen_mode): Call __libc_register_dl_open_hook and
	__libc_register_dlfcn_hook.
	* dlfcn/Makefile (routines, elide-routines.os): Set.
	Add rules to build and test tststatic2.
	* dlfcn/tststatic2.c: New test.
	* dlfcn/modstatic2.c: New test module.
	* dlfcn/dladdr.c: Call _dlfcn_hook from libdl.so if not NULL.
	Define __ prefixed routine in libc.a and in libdl.a just call it.
	* dlfcn/dladdr1.c: Likewise.
	* dlfcn/dlclose.c: Likewise.
	* dlfcn/dlerror.c: Likewise.
	* dlfcn/dlinfo.c: Likewise.
	* dlfcn/dlmopen.c: Likewise.
	* dlfcn/dlopen.c: Likewise.
	* dlfcn/dlopenold.c: Likewise.
	* dlfcn/dlsym.c: Likewise.
	* dlfcn/dlvsym.c: Likewise.
	* dlfcn/sdladdr.c: New file.
	* dlfcn/sdladdr1.c: New file.
	* dlfcn/sdlclose.c: New file.
	* dlfcn/sdlerror.c: New file.
	* dlfcn/sdlinfo.c: New file.
	* dlfcn/sdlopen.c: New file.
	* dlfcn/sdlsym.c: New file.
	* dlfcn/sdlvsym.c: New file.
	* dlfcn/Versions (libdl): Export _dlfcn_hook@GLIBC_PRIVATE.
	* include/dlfcn.h (DL_CALLER_DECL, DL_CALLER RETURN_ADDRESS): Define.
	(struct dlfcn_hook): New type.
	(_dlfcn_hook): New extern decl.
	(__dlopen, __dlclose, __dlsym, __dlerror, __dladdr, __dladdr1,
	__dlinfo, __dlmopen, __libc_dlsym_private,
	__libc_register_dl_open_hook, __libc_register_dlfcn_hook): New
	prototypes.
	(__dlvsym): Use DL_CALLER_DECL.
	* include/libc-symbols.h: Define libdl_hidden_proto and friends.

	* malloc/arena.c (_dl_open_hook): Extern decl.
	(ptmalloc_init): Don't call _dl_addr when dlopened from statically
	linked programs but don't use brk for them either.

1 files changed, 9 insertions, 2 deletions

diff --git a/malloc/arena.c b/malloc/arena.c
index 9018a4f0e9..024e191b9e 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -347,6 +347,9 @@ __failing_morecore (ptrdiff_t d)
 {
   return (void *) MORECORE_FAILURE;
 }
+
+extern struct dl_open_hook *_dl_open_hook;
+libc_hidden_proto (_dl_open_hook);
 # endif
 
 # if defined SHARED && defined USE_TLS && !USE___THREAD
@@ -429,10 +432,14 @@ ptmalloc_init (void)
   main_arena.next = &main_arena;
 
 #if defined _LIBC && defined SHARED
-  /* In case this libc copy is in a non-default namespace, never use brk.  */
+  /* In case this libc copy is in a non-default namespace, never use brk.
+     Likewise if dlopened from statically linked program.  */
   Dl_info di;
   struct link_map *l;
-  if (_dl_addr (ptmalloc_init, &di, &l, NULL) != 0 && l->l_ns != LM_ID_BASE)
+
+  if (_dl_open_hook != NULL
+      || (_dl_addr (ptmalloc_init, &di, &l, NULL) != 0
+	  && l->l_ns != LM_ID_BASE))
     __morecore = __failing_morecore;
 #endif