Update.

	* elf/elf.h: Add various DF_1_*, DTF_1_*, and DF_P1_* entries.
	* elf/dl-close.c (_dl_close): Don't close an object if it is marked
	with nodelete.
	* elf/dl-open.c (dl_open_worker): Pass RTLD_NOLOAD as new parameter
	to _dl_map_object.  Return immediately if no object loaded.
	Set DF_1_NODELETE bit in l_flags_1 if RTLD_NODELETE was passed.
	* elf/dynamic-link.h (elf_get_dynamic_info): Copy DT_FLAGS_1 entry
	if it exists into l_flags_1 word.
	* elf/dl-load.c (_dl_map_object_from_fd): Take no parameter and use
	it to determine whether loading is wanted or not.
	(_dl_map_object): Likewise.
	Call _dl_map_object_from_fd with new parameter.
	* sysdeps/generic/ldsodefs.h: Update prototype.
	* elf/dl-deps.c: Add new parameter to _dl_map_object calls.
	* elf/rtld.c: Likewise.
	* elf/Makefile (tests): Add noload.  Add rules to generate noload.
	* elf/noload.c: New file.
	* include/link.h (struct link_map): Add l_feature_1 and l_flags_1.
	* sysdeps/generic/bits/dlfcn.h: Define RTLD_NOLOAD and RTLD_NODELETE.
	* sysdeps/mips/bits/dlfcn.h: Likewise.

1 files changed, 16 insertions, 1 deletions

diff --git a/elf/dl-open.c b/elf/dl-open.c
index 680377be0a..477ecdf62e 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -144,7 +144,17 @@ dl_open_worker (void *a)
     }
 
   /* Load the named object.  */
-  args->map = new = _dl_map_object (NULL, file, 0, lt_loaded, 0);
+  args->map = new = _dl_map_object (NULL, file, 0, lt_loaded, 0,
+				    mode & RTLD_NOLOAD);
+
+  /* If the pointer returned is NULL this means the RTLD_NOLOAD flag is
+     set and the object is not already loaded.  */
+  if (new == NULL)
+    {
+      assert (mode & RTLD_NOLOAD);
+      return;
+    }
+
   if (new->l_searchlist.r_list)
     /* It was already open.  */
     return;
@@ -279,6 +289,11 @@ dl_open_worker (void *a)
       /* XXX Do we have to add something to r_dupsearchlist???  --drepper */
     }
 
+  /* Mark the object as not deletable if the RTLD_NODELETE flags was
+     passed.  */
+  if (__builtin_expect (mode & RTLD_NODELETE, 0))
+    new->l_flags_1 |= DF_1_NODELETE;
+
   if (_dl_sysdep_start == NULL)
     /* We must be the static _dl_open in libc.a.  A static program that
        has loaded a dynamic object now has competition.  */