* sysdeps/generic/ldsodefs.h (_dl_load_lock): Declare it here with

	__libc_lock_define_recursive.
	* elf/dl-open.c: Don't declare it here any more.
	* elf/dl-close.c: Likewise.
	* elf/dl-lookup.c: Likewise.
	* elf/dl-iteratephdr.c: Likewise.
	* elf/dl-lookup.c (add_dependency): Use __libc_lock_lock_recursive and
	__libc_lock_unlock_recursive.
	* elf/dl-close.c (_dl_close): Likewise
	* elf/dl-iteratephdr.c (__dl_iterate_phdr): Likewise
	* elf/dl-open.c (_dl_open): Likewise

	* sysdeps/generic/bits/libc-lock.h
	(__libc_lock_define_recursive): New macro.
	* sysdeps/generic/bits/stdio-lock.h (_IO_lock_t): Use it.
	(_IO_lock_lock): Use __libc_lock_lock_recursive.
	(_IO_lock_unlock): Use __libc_lock_unlock_recursive.

1 files changed, 2 insertions, 11 deletions

diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 85b9718331..fe833ba22b 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -61,15 +61,6 @@ struct sym_val
 /* Statistics function.  */
 unsigned long int _dl_num_relocations;
 
-/* During the program run we must not modify the global data of
-   loaded shared object simultanously in two threads.  Therefore we
-   protect `_dl_open' and `_dl_close' in dl-close.c.
-
-   This must be a recursive lock since the initializer function of
-   the loaded object might as well require a call to this function.
-   At this time it is not anymore a problem to modify the tables.  */
-__libc_lock_define (extern, _dl_load_lock)
-
 
 /* We have two different situations when looking up a simple: with or
    without versioning.  gcc is not able to optimize a single function
@@ -92,7 +83,7 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
   int result = 0;
 
   /* Make sure nobody can unload the object while we are at it.  */
-  __libc_lock_lock (_dl_load_lock);
+  __libc_lock_lock_recursive (_dl_load_lock);
 
   /* Determine whether UNDEF_MAP already has a reference to MAP.  First
      look in the normal dependencies.  */
@@ -174,7 +165,7 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
     }
 
   /* Release the lock.  */
-  __libc_lock_unlock (_dl_load_lock);
+  __libc_lock_unlock_recursive (_dl_load_lock);
 
   return result;
 }