From ecdeaac05f73c29eca92eecd55ad4fb8513c7771 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 23 Sep 2003 12:06:48 +0000 Subject: 2003-09-23 Roland McGrath * sysdeps/generic/ldsodefs.h (struct rtld_global): Add _dl_stack_flags and _dl_make_stack_executable_hook. Declare _dl_make_stack_executable. * elf/rtld.c (_rtld_global): Add initializer for _dl_stack_flags. (dl_main): Reset _dl_stack_flags according to PT_GNU_STACK phdr. Initialize _dl_make_stack_executable_hook. * elf/dl-support.c: Define those new variables. (_dl_non_dynamic_init): Scan phdrs for PT_GNU_STACK. (_dl_phdr): Fix type. * elf/dl-load.c (_dl_map_object_from_fd): Grok PT_GNU_STACK phdr and enable execute permission for the stack if necessary. * sysdeps/generic/dl-execstack.c: New file. * elf/Makefile (dl-routines): Add it. * elf/Versions (ld: GLIBC_PRIVATE): Add _dl_make_stack_executable. * sysdeps/unix/sysv/linux/dl-execstack.c: New file. --- sysdeps/generic/dl-execstack.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 sysdeps/generic/dl-execstack.c (limited to 'sysdeps/generic/dl-execstack.c') diff --git a/sysdeps/generic/dl-execstack.c b/sysdeps/generic/dl-execstack.c new file mode 100644 index 0000000..04f87cf --- /dev/null +++ b/sysdeps/generic/dl-execstack.c @@ -0,0 +1,32 @@ +/* Stack executability handling for GNU dynamic linker. Stub version. + Copyright (C) 2003 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +/* There is no portable way to know the bounds of the initial thread's stack + so as to mprotect it. */ + +int +internal_function +_dl_make_stack_executable (void) +{ + return ENOSYS; +} +rtld_hidden_def (_dl_make_stack_executable) -- cgit v1.1