hurd: avoid letting signals go to thread created by timer_create

* sysdeps/pthread/timer_routines.c (__timer_thread_start): Block all
signals in thread created for runing timers.

2 files changed, 11 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index fff9430..55eec1b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-04-02  Samuel Thibault  <samuel.thibault@ens-lyon.org>
+
+	* sysdeps/pthread/timer_routines.c (__timer_thread_start): Block all
+	signals in thread created for runing timers.
+
 2018-04-01  Florian Weimer  <fweimer@redhat.com>
 
 	* support/support_format_addrinfo.c (support_format_addrinfo):
diff --git a/sysdeps/pthread/timer_routines.c b/sysdeps/pthread/timer_routines.c
index e6e884f..25ccfad 100644
--- a/sysdeps/pthread/timer_routines.c
+++ b/sysdeps/pthread/timer_routines.c
@@ -463,10 +463,14 @@ int
 __timer_thread_start (struct thread_node *thread)
 {
   int retval = 1;
+  sigset_t set, oset;
 
   assert (!thread->exists);
   thread->exists = 1;
 
+  sigfillset (&set);
+  pthread_sigmask (SIG_SETMASK, &set, &oset);
+
   if (pthread_create (&thread->id, &thread->attr,
 		      (void *(*) (void *)) thread_func, thread) != 0)
     {
@@ -474,6 +478,8 @@ __timer_thread_start (struct thread_node *thread)
       retval = -1;
     }
 
+  pthread_sigmask (SIG_SETMASK, &oset, NULL);
+
   return retval;
 }