From c5168071738467fb67e932976e56f364291cca60 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 11 Aug 2011 15:54:06 -0400 Subject: [PATCH] block signals in timer threads if a timer thread leaves signals unblocked, any future attempt by the main thread to prevent the process from being terminated by blocking signals will fail, since the signal can still be delivered to the timer thread. --- src/time/timer_create.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/time/timer_create.c b/src/time/timer_create.c index 1561d797..593f73aa 100644 --- a/src/time/timer_create.c +++ b/src/time/timer_create.c @@ -80,6 +80,7 @@ int timer_create(clockid_t clk, struct sigevent *evp, timer_t *res) struct start_args args; struct ksigevent ksev, *ksevp=0; int timerid; + sigset_t set; switch (evp ? evp->sigev_notify : SIGEV_SIGNAL) { case SIGEV_NONE: @@ -104,7 +105,10 @@ int timer_create(clockid_t clk, struct sigevent *evp, timer_t *res) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); pthread_barrier_init(&args.b, 0, 2); args.sev = evp; + sigfillset(&set); + pthread_sigmask(SIG_BLOCK, &set, &set); r = pthread_create(&td, &attr, start, &args); + pthread_sigmask(SIG_SETMASK, &set, 0); if (r) { errno = r; return -1; -- 2.20.1