From 34e6a8694d9dd80558150f8542359b93c6c57e44 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sat, 17 Mar 2018 22:50:09 +0100 Subject: hurd: Fix getting signal thread stack layout for fork * hurd/hurdsig.c: Include . (_hurdsig_init): Call pthread_getattr_np and pthread_attr_getstack to get the signal thread stack layout. --- hurd/hurdsig.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'hurd') diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index 4f5bb9a..198546f 100644 --- a/hurd/hurdsig.c +++ b/hurd/hurdsig.c @@ -20,6 +20,7 @@ #include #include /* For `struct mutex'. */ +#include #include #include @@ -1297,7 +1298,24 @@ _hurdsig_init (const int *intarray, size_t intarraysize) values all zero so they'll be ignored. */ #pragma weak cthread_fork #pragma weak cthread_detach - cthread_detach (cthread_fork ((cthread_fn_t) &_hurd_msgport_receive, 0)); +#pragma weak pthread_getattr_np +#pragma weak pthread_attr_getstack + cthread_t thread = cthread_fork ((cthread_fn_t) &_hurd_msgport_receive, + 0); + cthread_detach (thread); + + if (pthread_getattr_np) + { + /* Record signal thread stack layout for fork() */ + pthread_attr_t attr; + void *addr; + size_t size; + + pthread_getattr_np ((pthread_t) thread, &attr); + pthread_attr_getstack (&attr, &addr, &size); + __hurd_sigthread_stack_base = (uintptr_t) addr; + __hurd_sigthread_stack_end = __hurd_sigthread_stack_base + size; + } /* XXX We need the thread port for the signal thread further on in this thread (see hurdfault.c:_hurdsigfault_init). -- cgit v1.1