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| author | Ulrich Drepper <drepper@redhat.com> | 2004-01-13 15:47:32 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-01-13 15:47:32 +0000 |
| commit | d1fc817ea459ca28979948fbb23ff58a6f3f4a8c (patch) | |
| tree | cf1b48823190c07959f8b8b769d096fcd739b2f3 /nptl/allocatestack.c | |
| parent | 0a182a286d84451b70a40948247319ac9723decb (diff) | |
| download | glibc-d1fc817ea459ca28979948fbb23ff58a6f3f4a8c.tar glibc-d1fc817ea459ca28979948fbb23ff58a6f3f4a8c.tar.gz glibc-d1fc817ea459ca28979948fbb23ff58a6f3f4a8c.tar.bz2 glibc-d1fc817ea459ca28979948fbb23ff58a6f3f4a8c.zip | |
Update.
2004-01-13 Ulrich Drepper <drepper@redhat.com>
* 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.
Diffstat (limited to 'nptl/allocatestack.c')
| -rw-r--r-- | nptl/allocatestack.c | 12 |
1 files changed, 9 insertions, 3 deletions
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 <drepper@redhat.com>, 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; } |