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, 38 insertions, 10 deletions

diff --git a/dlfcn/dlopen.c b/dlfcn/dlopen.c
index cfd7963545..6381ffc9b1 100644
--- a/dlfcn/dlopen.c
+++ b/dlfcn/dlopen.c
@@ -20,6 +20,17 @@
 #include <dlfcn.h>
 #include <stddef.h>
 
+#if !defined SHARED && defined IS_IN_libdl
+
+void *
+dlopen (const char *file, int mode)
+{
+  return __dlopen (file, mode, RETURN_ADDRESS (0));
+}
+static_link_warning (dlopen)
+
+#else
+
 struct dlopen_args
 {
   /* The arguments for dlopen_doit.  */
@@ -33,11 +44,11 @@ struct dlopen_args
 
 
 /* Non-shared code has no support for multiple namespaces.  */
-#ifdef SHARED
-# define NS __LM_ID_CALLER
-#else
-# define NS LM_ID_BASE
-#endif
+# ifdef SHARED
+#  define NS __LM_ID_CALLER
+# else
+#  define NS LM_ID_BASE
+# endif
 
 
 static void
@@ -50,17 +61,34 @@ dlopen_doit (void *a)
 }
 
 
-extern void *__dlopen_check (const char *file, int mode);
 void *
-__dlopen_check (const char *file, int mode)
+__dlopen (const char *file, int mode DL_CALLER_DECL)
 {
+# ifdef SHARED
+  if (__builtin_expect (_dlfcn_hook != NULL, 0))
+    return _dlfcn_hook->dlopen (file, mode, DL_CALLER);
+# endif
+
   struct dlopen_args args;
   args.file = file;
   args.mode = mode;
-  args.caller = RETURN_ADDRESS (0);
+  args.caller = DL_CALLER;
 
+# ifdef SHARED
   return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
+# else
+  if (_dlerror_run (dlopen_doit, &args))
+    return NULL;
+
+  __libc_register_dl_open_hook ((struct link_map *) args.new);
+  __libc_register_dlfcn_hook ((struct link_map *) args.new);
+
+  return args.new;
+# endif
 }
-#include <shlib-compat.h>
+# ifdef SHARED
+#  include <shlib-compat.h>
+strong_alias (__dlopen, __dlopen_check)
 versioned_symbol (libdl, __dlopen_check, dlopen, GLIBC_2_1);
-static_link_warning (dlopen)
+# endif
+#endif