From ed20b3d9cc5ce78fd71f32c47b2eb7a897c7a25d Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 13 Jan 2004 08:36:54 +0000 Subject: Update. 2004-01-13 Ulrich Drepper * 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. --- Makerules | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'Makerules') diff --git a/Makerules b/Makerules index d1bef8c983..9aa0703be7 100644 --- a/Makerules +++ b/Makerules @@ -1,4 +1,4 @@ -# Copyright (C) 1991-2002, 2003 Free Software Foundation, Inc. +# Copyright (C) 1991-2002, 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 @@ -488,7 +488,17 @@ $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules -e 's/^.*\*(\.dynbss).*$$/& \ PROVIDE(__start___libc_freeres_ptrs = .); \ *(__libc_freeres_ptrs) \ - PROVIDE(__stop___libc_freeres_ptrs = .);/' + PROVIDE(__stop___libc_freeres_ptrs = .);/'\ + -e 's/^.*\*(\.jcr).*$$/&\n\ + PROVIDE(__start___libc_subfreeres = .);\n\ + __libc_subfreeres : { *(__libc_subfreeres) }\n\ + PROVIDE(__stop___libc_subfreeres = .);\n\ + PROVIDE(__start___libc_atexit = .);\n\ + __libc_atexit : { *(__libc_atexit) }\n\ + PROVIDE(__stop___libc_atexit = .);\n\ + PROVIDE(__start___libc_thread_subfreeres = .);\n\ + __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\n\ + PROVIDE(__stop___libc_thread_subfreeres = .);/' mv -f $@T $@ common-generated += shlib.lds -- cgit v1.2.3