From 6bc6bd3b10e6c2fd4c656647aa643919b0519825 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 10 Oct 2014 11:13:11 +0000
Subject: Don't use INTVARDEF/INTUSE with __libc_enable_secure (bug 14132).

Continuing the removal of the obsolete INTDEF / INTVARDEF / INTUSE
mechanism, this patch replaces its use for __libc_enable_secure with
the use of rtld_hidden_data_def and rtld_hidden_proto.

Tested for x86_64 that installed stripped shared libraries are
unchanged by the patch.

	[BZ #14132]
	* elf/dl-sysdep.c (__libc_enable_secure): Use rtld_hidden_data_def
	instead of INTVARDEF.
	(_dl_sysdep_start): Do not use INTUSE with __libc_enable_secure.
	* sysdeps/mach/hurd/dl-sysdep.c (__libc_enable_secure): Use
	rtld_hidden_data_def instead of INTVARDEF.
	(_dl_sysdep_start): Do not use INTUSE with __libc_enable_secure.
	* elf/dl-deps.c (expand_dst): Likewise.
	* elf/dl-load.c (_dl_dst_count): Likewise.
	(_dl_dst_substitute): Likewise.
	(decompose_rpath): Likewise.
	(_dl_init_paths): Likewise.
	(open_path): Likewise.
	(_dl_map_object): Likewise.
	* elf/rtld.c (dl_main): Likewise.
	(process_dl_audit): Likewise.
	(process_envvars): Likewise.
	* include/unistd.h [IS_IN_rtld] (__libc_enable_secure_internal):
	Remove declaration.
	(__libc_enable_secure): Use rtld_hidden_proto.
---
 elf/rtld.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'elf/rtld.c')

diff --git a/elf/rtld.c b/elf/rtld.c
index d5cace868b..d5e007f9d6 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1498,7 +1498,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
       /* Prevent optimizing strsep.  Speed is not important here.  */
       while ((p = (strsep) (&list, " :")) != NULL)
 	if (p[0] != '\0'
-	    && (__builtin_expect (! INTUSE(__libc_enable_secure), 1)
+	    && (__builtin_expect (! __libc_enable_secure, 1)
 		|| strchr (p, '/') == NULL))
 	  npreloads += do_preload (p, main_map, "LD_PRELOAD");
 
@@ -2318,7 +2318,7 @@ process_dl_audit (char *str)
 
   while ((p = (strsep) (&str, ":")) != NULL)
     if (p[0] != '\0'
-	&& (__builtin_expect (! INTUSE(__libc_enable_secure), 1)
+	&& (__builtin_expect (! __libc_enable_secure, 1)
 	    || strchr (p, '/') == NULL))
       {
 	/* This is using the local malloc, not the system malloc.  The
@@ -2352,7 +2352,7 @@ process_envvars (enum mode *modep)
 
   /* This is the default place for profiling data file.  */
   GLRO(dl_profile_output)
-    = &"/var/tmp\0/var/profile"[INTUSE(__libc_enable_secure) ? 9 : 0];
+    = &"/var/tmp\0/var/profile"[__libc_enable_secure ? 9 : 0];
 
   while ((envline = _dl_next_ld_env_entry (&runp)) != NULL)
     {
@@ -2420,7 +2420,7 @@ process_envvars (enum mode *modep)
 	case 9:
 	  /* Test whether we want to see the content of the auxiliary
 	     array passed up from the kernel.  */
-	  if (!INTUSE(__libc_enable_secure)
+	  if (!__libc_enable_secure
 	      && memcmp (envline, "SHOW_AUXV", 9) == 0)
 	    _dl_show_auxv ();
 	  break;
@@ -2434,7 +2434,7 @@ process_envvars (enum mode *modep)
 
 	case 11:
 	  /* Path where the binary is found.  */
-	  if (!INTUSE(__libc_enable_secure)
+	  if (!__libc_enable_secure
 	      && memcmp (envline, "ORIGIN_PATH", 11) == 0)
 	    GLRO(dl_origin_path) = &envline[12];
 	  break;
@@ -2454,7 +2454,7 @@ process_envvars (enum mode *modep)
 	      break;
 	    }
 
-	  if (!INTUSE(__libc_enable_secure)
+	  if (!__libc_enable_secure
 	      && memcmp (envline, "DYNAMIC_WEAK", 12) == 0)
 	    GLRO(dl_dynamic_weak) = 1;
 	  break;
@@ -2465,7 +2465,7 @@ process_envvars (enum mode *modep)
 #ifdef EXTRA_LD_ENVVARS_13
 	  EXTRA_LD_ENVVARS_13
 #endif
-	  if (!INTUSE(__libc_enable_secure)
+	  if (!__libc_enable_secure
 	      && memcmp (envline, "USE_LOAD_BIAS", 13) == 0)
 	    {
 	      GLRO(dl_use_load_bias) = envline[14] == '1' ? -1 : 0;
@@ -2478,7 +2478,7 @@ process_envvars (enum mode *modep)
 
 	case 14:
 	  /* Where to place the profiling data file.  */
-	  if (!INTUSE(__libc_enable_secure)
+	  if (!__libc_enable_secure
 	      && memcmp (envline, "PROFILE_OUTPUT", 14) == 0
 	      && envline[15] != '\0')
 	    GLRO(dl_profile_output) = &envline[15];
@@ -2516,7 +2516,7 @@ process_envvars (enum mode *modep)
 
   /* Extra security for SUID binaries.  Remove all dangerous environment
      variables.  */
-  if (__builtin_expect (INTUSE(__libc_enable_secure), 0))
+  if (__builtin_expect (__libc_enable_secure, 0))
     {
       static const char unsecure_envvars[] =
 #ifdef EXTRA_UNSECURE_ENVVARS
-- 
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