提交 8cce15af 编写于 作者: R Rich Felker

ensure pthread-internal signals are unblocked before threads are used

if the process started with these signals blocked, cancellation could
fail or setxid could deadlock. there is no way to globally unblock
them after threads have been created. by unblocking them in the
pthread_self initialization for the main thread, we ensure that
they're unblocked before any other threads are created and also
outside of any signal handler context (sigaction initialized
pthread_self), which is important so that return from a signal handler
won't re-block them.
上级 8b4c232e
......@@ -8,6 +8,7 @@ weak_alias(dummy, __pthread_tsd_main);
static int init_main_thread()
{
__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, 8);
if (__set_thread_area(&main_thread) < 0) return -1;
main_thread.canceldisable = libc.canceldisable;
main_thread.tsd = (void **)__pthread_tsd_main;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册