.>) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [URG], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL, [], SA_RESTORER...rt_sigprocmask(SIG_SETMASK, [URG], NULL, 8) = 0
nanosleep({2, 0},
0x7fff60c0bb80) = 0
rt_sigprocmask(SIG_BLOCK...rt_sigprocmask(SIG_SETMASK, [URG], NULL, 8) = 0
nanosleep({2, 0}, 0x7fff60c0bb80) = 0
rt_sigprocmask(SIG_BLOCK