diff options
| -rw-r--r-- | linuxthreads/ChangeLog | 4 | ||||
| -rw-r--r-- | linuxthreads/signals.c | 18 |
2 files changed, 17 insertions, 5 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 26a87cb2c3..c89fa758a3 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,7 @@ +1998-08-08 11:18 H.J. Lu <hjl@gnu.org> + + * signals.c (sigaction): Handle NULL argument. + 1998-08-04 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/bits/sigthread.h: Use __sigset_t instead diff --git a/linuxthreads/signals.c b/linuxthreads/signals.c index ac752d145a..392b5ea5a9 100644 --- a/linuxthreads/signals.c +++ b/linuxthreads/signals.c @@ -93,16 +93,24 @@ int sigaction(int sig, const struct sigaction * act, struct sigaction * oact) { struct sigaction newact; + struct sigaction *newactp; if (sig == __pthread_sig_restart || sig == __pthread_sig_cancel) return EINVAL; - newact = *act; - if (act->sa_handler != SIG_IGN && act->sa_handler != SIG_DFL) - newact.sa_handler = pthread_sighandler; - if (__sigaction(sig, &newact, oact) == -1) + if (act) + { + newact = *act; + if (act->sa_handler != SIG_IGN && act->sa_handler != SIG_DFL) + newact.sa_handler = pthread_sighandler; + newactp = &newact; + } + else + newactp = NULL; + if (__sigaction(sig, newactp, oact) == -1) return -1; if (oact != NULL) oact->sa_handler = sighandler[sig]; - sighandler[sig] = act->sa_handler; + if (act) + sighandler[sig] = act->sa_handler; return 0; } |