From d1fc817ea459ca28979948fbb23ff58a6f3f4a8c Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 13 Jan 2004 15:47:32 +0000 Subject: Update. 2004-01-13 Ulrich Drepper * sysdeps/unix/sysv/linux/dl-execstack.c: Change interface. Add challenge for caller. * sysdeps/generic/ldsodefs.h: Change declaration and type of hook member in rtld_global appropriately. * elf/dl-support.c: Likewise. * elf/dl-load.c (_dl_map_object_from_fd): Take additional paramter. Pass it on to the changed function. (_dl_map_object): Pass new parameter to _dl_map_object_from_fd. --- nptl/allocatestack.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'nptl/allocatestack.c') diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index 343dd683d6..02de7f0ed7 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. @@ -661,10 +661,16 @@ __deallocate_stack (struct pthread *pd) } +extern void *__libc_stack_end; + int internal_function -__make_stacks_executable (void) +__make_stacks_executable (void **stack_endp) { + /* Challenge the caller. */ + if (*stack_endp != __libc_stack_end) + return EPERM; + #ifdef NEED_SEPARATE_REGISTER_STACK const size_t pagemask = ~(__getpagesize () - 1); #endif @@ -702,7 +708,7 @@ __make_stacks_executable (void) lll_unlock (stack_cache_lock); if (err == 0) - err = _dl_make_stack_executable (); + err = _dl_make_stack_executable (stack_endp); return err; } -- cgit v1.2.1