From 5f21997b9d6a49ddbed85b044e2be7b182c095a2 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 18 Oct 2004 23:17:46 +0000
Subject: Update.

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.
---
 dlfcn/dlsym.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

(limited to 'dlfcn/dlsym.c')

diff --git a/dlfcn/dlsym.c b/dlfcn/dlsym.c
index 76dda5973f..a656ca63ce 100644
--- a/dlfcn/dlsym.c
+++ b/dlfcn/dlsym.c
@@ -22,6 +22,16 @@
 
 #include <ldsodefs.h>
 
+#if !defined SHARED && defined IS_IN_libdl
+
+void *
+dlsym (void *handle, const char *name)
+{
+  return __dlsym (handle, name, RETURN_ADDRESS (0));
+}
+
+#else
+
 struct dlsym_args
 {
   /* The arguments to dlsym_doit.  */
@@ -43,10 +53,15 @@ dlsym_doit (void *a)
 
 
 void *
-dlsym (void *handle, const char *name)
+__dlsym (void *handle, const char *name DL_CALLER_DECL)
 {
+# ifdef SHARED
+  if (__builtin_expect (_dlfcn_hook != NULL, 0))
+    return _dlfcn_hook->dlsym (handle, name, DL_CALLER);
+# endif
+
   struct dlsym_args args;
-  args.who = RETURN_ADDRESS (0);
+  args.who = DL_CALLER;
   args.handle = handle;
   args.name = name;
 
@@ -59,3 +74,7 @@ dlsym (void *handle, const char *name)
 
   return result;
 }
+# ifdef SHARED
+strong_alias (__dlsym, dlsym)
+# endif
+#endif
-- 
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