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| author | Ulrich Drepper <drepper@redhat.com> | 1998-08-09 09:02:55 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-08-09 09:02:55 +0000 |
| commit | cf0fd0161c73af42b7755043fa9a2a0ac0177a08 (patch) | |
| tree | d99fa841e378df918b60e215b11d2929dd7e8203 /linuxthreads/signals.c | |
| parent | 88187dcc62fc3ca4229bb3e95018fb0f5c1543c2 (diff) | |
| download | glibc-cf0fd0161c73af42b7755043fa9a2a0ac0177a08.zip glibc-cf0fd0161c73af42b7755043fa9a2a0ac0177a08.tar.gz glibc-cf0fd0161c73af42b7755043fa9a2a0ac0177a08.tar.bz2 | |
(sigaction): Handle NULL argument.
1998-08-08 11:18 H.J. Lu <hjl@gnu.org>
* signals.c (sigaction): Handle NULL argument.
Diffstat (limited to 'linuxthreads/signals.c')
| -rw-r--r-- | linuxthreads/signals.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/linuxthreads/signals.c b/linuxthreads/signals.c index ac752d1..392b5ea 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; } |