Update.

2004-10-27  Jakub Jelinek  <jakub@redhat.com>

	* include/resolv.h (_res_opcodes): New extern.
	Add libresolv_hidden_proto.
	* resolv/res_debug.c (_res_opcodes): Remove.
	(__p_class_syms, __p_type_syms): Add libresolv_hidden_proto
	and libresolv_hidden_data_def.  Remove attribute_hidden.
	* resolv/res_mkquery (_res_opcodes): Remove.
	* resolv/res_data.c (_res_opcodes): Remove attribute_hidden.
	Add libresolv_hidden_data_def.

	* elf/dl-open.c (_dl_open): Don't allow explicitly opening a DSO
	into an empty namespace.

ChangeLog

@@ -1,5 +1,19 @@
+2004-10-27  Jakub Jelinek  <jakub@redhat.com>
+
+	* include/resolv.h (_res_opcodes): New extern.
+	Add libresolv_hidden_proto.
+	* resolv/res_debug.c (_res_opcodes): Remove.
+	(__p_class_syms, __p_type_syms): Add libresolv_hidden_proto
+	and libresolv_hidden_data_def.  Remove attribute_hidden.
+	* resolv/res_mkquery (_res_opcodes): Remove.
+	* resolv/res_data.c (_res_opcodes): Remove attribute_hidden.
+	Add libresolv_hidden_data_def.
+
 2004-10-27  Ulrich Drepper  <drepper@redhat.com>
 
+	* elf/dl-open.c (_dl_open): Don't allow explicitly opening a DSO
+	into an empty namespace.
+
 	* elf/dl-fini.c (_dl_fini): Fix search for map in maps array.
 	Reverse order of namespaces.
 	* elf/Makefile: Add rules to build and run tst-dlmopen3.

elf/dl-open.c

@@ -570,6 +570,12 @@ _dl_open (const char *file, int mode, const void *caller_dlopen, Lmid_t nsid)
 no more namespaces available for dlmopen()"));
 	}
     }
+  /* Never allow loading a DSO in a namespace which is empty.  Such
+     direct placements is only causing problems.  */
+  else if (nsid != LM_ID_BASE && nsid != __LM_ID_CALLER
+	   && GL(dl_ns)[nsid]._ns_nloaded == 0)
+    GLRO(dl_signal_error) (EINVAL, file, NULL,
+			   N_("invalid target namespace in dlmopen()"));
 
   args.file = file;
   args.mode = mode;

elf/tst-dlmopen3.c

@@ -0,0 +1,23 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <gnu/lib-names.h>
+
+
+static int
+do_test (void)
+{
+  void *h = dlmopen (LM_ID_NEWLM, "$ORIGIN/tst-dlmopen1mod.so", RTLD_LAZY);
+  if (h == NULL)
+    {
+      printf ("cannot get handle for %s: %s\n",
+	      "tst-dlmopen1mod.so", dlerror ());
+      return 1;
+    }
+
+  /* Do not unload.  */
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"

include/resolv.h

@@ -98,6 +98,9 @@ libresolv_hidden_proto (__ns_name_unpack)
 libresolv_hidden_proto (__ns_get16)
 libresolv_hidden_proto (__ns_get32)
 
+extern const char *_res_opcodes[];
+libresolv_hidden_proto (_res_opcodes)
+
 #endif
 
 #endif

resolv/res_data.c

@@ -39,7 +39,7 @@ static const char rcsid[] = "$BINDId: res_data.c,v 8.17 1999/10/13 17:11:31 vixi
 #include <string.h>
 #include <unistd.h>
 
-const char *_res_opcodes[] attribute_hidden = {
+const char *_res_opcodes[] = {
 	"QUERY",
 	"IQUERY",
 	"CQUERYM",
@@ -57,6 +57,7 @@ const char *_res_opcodes[] attribute_hidden = {
 	"ZONEINIT",
 	"ZONEREF",
 };
+libresolv_hidden_data_def (_res_opcodes)
 
 #ifdef BIND_UPDATE
 const char *_res_sectioncodes[] attribute_hidden = {

resolv/res_debug.c

@@ -118,7 +118,6 @@ static const char rcsid[] = "$BINDId: res_debug.c,v 8.34 2000/02/29 05:30:55 vix
 # define SPRINTF(x) sprintf x
 #endif
 
-extern const char *_res_opcodes[] attribute_hidden;
 extern const char *_res_sectioncodes[] attribute_hidden;
 
 /*
@@ -349,7 +348,9 @@ p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
  * that C_ANY is a qclass but not a class.  (You can ask for records of class
  * C_ANY, but you can't have any records of that class in the database.)
  */
-const struct res_sym __p_class_syms[] attribute_hidden = {
+extern const struct res_sym __p_class_syms[];
+libresolv_hidden_proto (__p_class_syms)
+const struct res_sym __p_class_syms[] = {
 	{C_IN,		"IN"},
 	{C_CHAOS,	"CHAOS"},
 	{C_HS,		"HS"},
@@ -358,6 +359,7 @@ const struct res_sym __p_class_syms[] attribute_hidden = {
 	{C_NONE,	"NONE"},
 	{C_IN, 		(char *)0}
 };
+libresolv_hidden_data_def (__p_class_syms)
 
 /*
  * Names of message sections.
@@ -401,7 +403,9 @@ const struct res_sym __p_cert_syms[] attribute_hidden = {
  * that T_ANY is a qtype but not a type.  (You can ask for records of type
  * T_ANY, but you can't have any records of that type in the database.)
  */
-const struct res_sym __p_type_syms[] attribute_hidden = {
+extern const struct res_sym __p_type_syms[];
+libresolv_hidden_proto (__p_type_syms)
+const struct res_sym __p_type_syms[] = {
 	{ns_t_a,	"A",		"address"},
 	{ns_t_ns,	"NS",		"name server"},
 	{ns_t_md,	"MD",		"mail destination (deprecated)"},
@@ -448,6 +452,7 @@ const struct res_sym __p_type_syms[] attribute_hidden = {
 	{ns_t_any,	"ANY",		"\"any\""},
 	{0, 		NULL,		NULL}
 };
+libresolv_hidden_data_def (__p_type_syms)
 
 /*
  * Names of DNS rcodes.

resolv/res_mkquery.c

@@ -88,8 +88,6 @@ static const char rcsid[] = "$BINDId: res_mkquery.c,v 8.12 1999/10/13 16:39:40 v
 # endif
 #endif
 
-extern const char *_res_opcodes[];
-
 /*
  * Form all types of queries.
  * Returns the size of the result or -1.