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authorUlrich Drepper <drepper@redhat.com>2003-09-25 03:31:59 +0000
committerUlrich Drepper <drepper@redhat.com>2003-09-25 03:31:59 +0000
commit69c9fa045bce5e125e2e4525eb62ec58965e92f5 (patch)
tree82128d16507f4f4a92caec8e3e5ae248b1f23c7c
parent279f1143afdb06e263dfab510a3e2cbb022014fe (diff)
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Update.
* sysdeps/unix/sysv/linux/dl-execstack.c (_dl_make_stack_executable): Remember that we changed the permission.
-rw-r--r--ChangeLog3
-rw-r--r--nptl/ChangeLog3
-rw-r--r--nptl/allocatestack.c14
-rw-r--r--sysdeps/unix/sysv/linux/dl-execstack.c3
4 files changed, 23 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 98435be..2b0b36f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2003-09-24 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/unix/sysv/linux/dl-execstack.c
+ (_dl_make_stack_executable): Remember that we changed the permission.
+
* sysdeps/ia64/dl-machine.h (RTLD_START): Remove setting of
__libc_stack_end. Patch by David Mosberger.
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index e18c9ca..30b7d9e 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,5 +1,8 @@
2003-09-24 Ulrich Drepper <drepper@redhat.com>
+ * allocatestack.c (__make_stacks_executable): Also change
+ permission of the currently unused stacks.
+
* allocatestack.c (change_stack_perm): Split out from
__make_stacks_executable.
(allocate_stack): If the required permission changed between the time
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 24292e7..c82b36e 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -684,6 +684,20 @@ __make_stacks_executable (void)
break;
}
+ /* Also change the permission for the currently unused stacks. This
+ might be wasted time but better spend it here than adding a check
+ in the fast path. */
+ list_for_each (runp, &stack_cache)
+ {
+ err = change_stack_perm (list_entry (runp, struct pthread, list)
+#ifdef NEED_SEPARATE_REGISTER_STACK
+ , pagemask
+#endif
+ );
+ if (err != 0)
+ break;
+ }
+
lll_unlock (stack_cache_lock);
if (err == 0)
diff --git a/sysdeps/unix/sysv/linux/dl-execstack.c b/sysdeps/unix/sysv/linux/dl-execstack.c
index 42300b0..c840f61 100644
--- a/sysdeps/unix/sysv/linux/dl-execstack.c
+++ b/sysdeps/unix/sysv/linux/dl-execstack.c
@@ -110,6 +110,9 @@ _dl_make_stack_executable (void)
# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
#endif
+ /* Remember that we changed the permission. */
+ GL(dl_stack_flags) |= PF_X;
+
return 0;
}
rtld_hidden_def (_dl_make_stack_executable)