Upstream-Status: Inappropriate [SDK specific]

This patch puts the dynamic loader path in the binaries, SYSTEM_DIRS strings
and lengths as well as ld.so.cache path in the dynamic loader to specific
sections in memory. The sections that contain paths have been allocated a 4096
byte section, which is the maximum path length in linux. This will allow the
relocating script to parse the ELF binary, detect the section and easily replace
the strings in a certain path.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>

Index: libc/elf/interp.c
===================================================================
--- libc.orig/elf/interp.c
+++ libc/elf/interp.c
@@ -16,5 +16,5 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-const char __invoke_dynamic_linker__[] __attribute__ ((section (".interp")))
+const char __invoke_dynamic_linker__[4096] __attribute__ ((section (".interp")))
   = RUNTIME_LINKER;
Index: libc/elf/dl-load.c
===================================================================
--- libc.orig/elf/dl-load.c
+++ libc/elf/dl-load.c
@@ -144,8 +144,8 @@ static size_t max_capstrlen attribute_re
 /* Get the generated information about the trusted directories.  */
 #include "trusted-dirs.h"
 
-static const char system_dirs[] = SYSTEM_DIRS;
-static const size_t system_dirs_len[] =
+static const char system_dirs[4096] __attribute__ ((section (".sysdirs"))) = SYSTEM_DIRS;
+volatile static const size_t system_dirs_len[] __attribute__ ((section (".sysdirslen"))) =
 {
   SYSTEM_DIRS_LEN
 };
Index: libc/elf/dl-cache.c
===================================================================
--- libc.orig/elf/dl-cache.c
+++ libc/elf/dl-cache.c
@@ -133,6 +133,10 @@ do									      \
 while (0)
 
 
+const char LD_SO_CACHE[4096] __attribute__ ((section (".ldsocache"))) =
+		SYSCONFDIR "/ld.so.cache";
+
+
 int
 internal_function
 _dl_cache_libcmp (const char *p1, const char *p2)
Index: libc/elf/ldconfig.c
===================================================================
--- libc.orig/elf/ldconfig.c
+++ libc/elf/ldconfig.c
@@ -166,6 +166,9 @@ static struct argp argp =
   options, parse_opt, NULL, doc, NULL, more_help, NULL
 };
 
+
+extern const char LD_SO_CACHE[4096] __attribute__ ((section (".ldsocache")));
+
 /* Check if string corresponds to an important hardware capability or
    a platform.  */
 static int
Index: libc/sysdeps/generic/dl-cache.h
===================================================================
--- libc.orig/sysdeps/generic/dl-cache.h
+++ libc/sysdeps/generic/dl-cache.h
@@ -27,10 +27,6 @@
   ((flags) == 1 || (flags) == _DL_CACHE_DEFAULT_ID)
 #endif
 
-#ifndef LD_SO_CACHE
-# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"
-#endif
-
 #ifndef add_system_dir
 # define add_system_dir(dir) add_dir (dir)
 #endif
Index: libc/elf/rtld.c
===================================================================
--- libc.orig/elf/rtld.c
+++ libc/elf/rtld.c
@@ -99,6 +99,7 @@ uintptr_t __pointer_chk_guard_local
 strong_alias (__pointer_chk_guard_local, __pointer_chk_guard)
 #endif
 
+extern const char LD_SO_CACHE[4096] __attribute__ ((section (".ldsocache")));
 
 /* List of auditing DSOs.  */
 static struct audit_list
@@ -1031,12 +1032,12 @@ of this helper program; chances are you
   --list                list all dependencies and how they are resolved\n\
   --verify              verify that given object really is a dynamically linked\n\
 			object we can handle\n\
-  --inhibit-cache       Do not use " LD_SO_CACHE "\n\
+  --inhibit-cache       Do not use %s\n\
   --library-path PATH   use given PATH instead of content of the environment\n\
 			variable LD_LIBRARY_PATH\n\
   --inhibit-rpath LIST  ignore RUNPATH and RPATH information in object names\n\
 			in LIST\n\
-  --audit LIST          use objects named in LIST as auditors\n");
+  --audit LIST          use objects named in LIST as auditors\n", LD_SO_CACHE);
 
       ++_dl_skip_args;
       --_dl_argc;