diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/signals.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/linuxthreads/signals.c b/linuxthreads/signals.c index 8a0dabf0e3..5a1025ee7a 100644 --- a/linuxthreads/signals.c +++ b/linuxthreads/signals.c @@ -74,7 +74,7 @@ static union { arch_sighandler_t old; void (*rt) (int, struct siginfo *, struct ucontext *); -} sighandler[NSIG]; +} sighandler[NSIG] = { [1 ... NSIG - 1] = { (arch_sighandler_t) SIG_ERR } }; /* The wrapper around user-provided signal handlers */ static void pthread_sighandler(int signo, SIGCONTEXT ctx) @@ -157,10 +157,14 @@ int __sigaction(int sig, const struct sigaction * act, return -1; if (sig > 0 && sig < NSIG) { - if (oact != NULL) + if (oact != NULL + /* We may have inherited SIG_IGN from the parent, so return the + kernel's idea of the signal handler the first time + through. */ + && (__sighandler_t) sighandler[sig].old != SIG_ERR) oact->sa_handler = (__sighandler_t) sighandler[sig].old; if (act) - /* For the assignment is does not matter whether it's a normal + /* For the assignment it does not matter whether it's a normal or real-time signal. */ sighandler[sig].old = (arch_sighandler_t) act->sa_handler; } |