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, 8 insertions, 3 deletions

diff --git a/elf/dl-load.c b/elf/dl-load.c
index 2c506b5..fbf82e2 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -688,7 +688,7 @@ static
 #endif
 struct link_map *
 _dl_map_object_from_fd (const char *name, int fd, char *realname,
-			struct link_map *loader, int l_type)
+			struct link_map *loader, int l_type, int noload)
 {
   /* This is the expected ELF header.  */
 #define ELF32_CLASS ELFCLASS32
@@ -752,6 +752,11 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname,
 	return l;
       }
 
+  if (noload)
+    /* We are not supposed to load the object unless it is already
+       loaded.  So return now.  */
+    return NULL;
+
   /* Print debugging message.  */
   if (__builtin_expect (_dl_debug_files, 0))
     _dl_debug_message (1, "file=", name, ";  generating link map\n", NULL);
@@ -1301,7 +1306,7 @@ open_path (const char *name, size_t namelen, int preloaded,
 struct link_map *
 internal_function
 _dl_map_object (struct link_map *loader, const char *name, int preloaded,
-		int type, int trace_mode)
+		int type, int trace_mode, int noload)
 {
   int fd;
   char *realname;
@@ -1501,5 +1506,5 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
 	_dl_signal_error (errno, name, N_("cannot open shared object file"));
     }
 
-  return _dl_map_object_from_fd (name, fd, realname, loader, type);
+  return _dl_map_object_from_fd (name, fd, realname, loader, type, noload);
 }