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, 70 insertions, 0 deletions

diff --git a/elf/noload.c b/elf/noload.c
new file mode 100644
index 0000000000..826427f4bd
--- /dev/null
+++ b/elf/noload.c
@@ -0,0 +1,70 @@
+#include <dlfcn.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  int result = 0;
+
+  /* First try to load an object which is a dependency.  This should
+     succeed.  */
+  if (dlopen ("testobj1.so", RTLD_LAZY | RTLD_NOLOAD) == NULL)
+    {
+      printf ("cannot open \"testobj1.so\": %s\n", dlerror ());
+      result = 1;
+    }
+  else
+    puts ("loading \"testobj1.so\" succeeded, OK");
+
+  /* Now try loading an object which is not already loaded.  */
+  if (dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD) != NULL)
+    {
+      puts ("succeeded in loading \"testobj5.so\"");
+      result = 1;
+    }
+  else
+    {
+      /* Load the object and run the same test again.  */
+      void *p;
+
+      puts ("\"testobj5.so\" wasn't loaded and RTLD_NOLOAD prevented it, OK");
+
+      p = dlopen ("testobj5.so", RTLD_LAZY);
+
+      if (p == NULL)
+	{
+	  printf ("cannot open \"testobj5.so\" without RTLD_NOLOAD: %s\n",
+		  dlerror ());
+	  result = 1;
+	}
+      else
+	{
+	  puts ("loading \"testobj5.so\" succeeded, OK");
+
+	  if (dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD) == NULL)
+	    {
+	      printf ("cannot open \"testobj5.so\": %s\n", dlerror ());
+	      result = 1;
+	    }
+	  else
+	    puts ("loading \"testobj5.so\" with RTLD_NOLOAD succeeded, OK");
+
+	  if (dlclose (p) != 0)
+	    {
+	      printf ("cannot close \"testobj5.so\": %s\n", dlerror ());
+	      result = 1;
+	    }
+	  else
+	    puts ("closing \"testobj5.so\" succeeded, OK");
+	}
+    }
+
+  return result;
+}
+
+
+int
+foo (int a)
+{
+  return 42 + a;
+}