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authorUlrich Drepper <drepper@redhat.com>2004-01-13 08:36:54 +0000
committerUlrich Drepper <drepper@redhat.com>2004-01-13 08:36:54 +0000
commited20b3d9cc5ce78fd71f32c47b2eb7a897c7a25d (patch)
treec4ea660173f2c8cc138e8f0f1c64055a156c5036 /include
parent1c563add69af03557ba47a4a13790d821133478c (diff)
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Update.
2004-01-13  Ulrich Drepper  <drepper@redhat.com>

	* Makeconfig: Define relro-LDFLAGS if have-z-relro==yes.  Add it to
	LDFLAGS.so and LDFLAGS-rtld.
	(+link): Add relro-LDFLAGS.
	* Makeconfig (shlib.lds): Place __libc_subfreeres, __libc_atexit, and
	__libc_thread_subfreeres sections after .jcr section.
	* config.make.in: Add have-z-relro.
	* configure.in: Add check for -z relro option.
	* include/link.h (struct link_map): Add relro_addr and relro_size
	members.
	* elf/dl-load.c (_dl_map_object_from_fd): Recognize PT_GNU_RELRO.
	* elf/dl-reloc.c (_dl_relocate_object): At the end, make relro
	part of loaded segments read-only.
	* elf/elf.h: Define PT_GNU_RELRO.
	* elf/rtld.c (_dl_start): Recognize PT_GNU_RELRO of ld.so.
	(dl_main): Recognize PT_GNU_RELRO of the application.  Call
	_dl_debug_initialize and initialize l_info[DT_DEBUG] before
	relocations.
Diffstat (limited to 'include')
-rw-r--r--include/link.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/link.h b/include/link.h
index 5d10bd6679..bc72310ea8 100644
--- a/include/link.h
+++ b/include/link.h
@@ -1,6 +1,6 @@
 /* Data structure for communication from the run-time dynamic linker for
    loaded ELF shared objects.
-   Copyright (C) 1995-2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1995-2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -280,6 +280,11 @@ struct link_map
     /* Index of the module in the dtv array.  */
     size_t l_tls_modid;
 #endif
+
+    /* Information used to change permission after the relocations are
+       done.  */
+    ElfW(Addr) l_relro_addr;
+    size_t l_relro_size;
   };
 
 struct dl_phdr_info