Further TLS async work

* gnutls.c (boot_error): New function to either signal an
error or return an error code.
(Fgnutls_boot): Don't signal errors when running asynchronously.

* process.h (pset_status): Move here from process.c to be
able to use from gnutls.c.

* process.c (connect_network_socket): Do the TLS boot here
when running asynchronously.
(wait_reading_process_output): Rework the dns_processes
handling for more safety.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/process.h b/src/process.h
index eb34f5f0411..95c64fa73b7 100644
--- a/src/process.h
+++ b/src/process.h
@@ -210,6 +210,12 @@ pset_childp (struct Lisp_Process *p, Lisp_Object val)
   p->childp = val;
 }
 
+INLINE void
+pset_status (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->status = val;
+}
+
 #ifdef HAVE_GNUTLS
 INLINE void
 pset_gnutls_cred_type (struct Lisp_Process *p, Lisp_Object val)