diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sigaction.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sigaction.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sigaction.c b/sysdeps/unix/sysv/linux/i386/sigaction.c index 90d61a08a1..05d187c432 100644 --- a/sysdeps/unix/sysv/linux/i386/sigaction.c +++ b/sysdeps/unix/sysv/linux/i386/sigaction.c @@ -47,19 +47,24 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact) /* First try the RT signals. */ if (__libc_have_rt_sigs) { - struct sigaction nact; + struct sigaction nact, *nactp; - nact.sa_handler = act->sa_handler; - memcpy (&nact.sa_mask, &act->sa_mask, sizeof (sigset_t)); - nact.sa_flags = act->sa_flags; + if (act) + { + nact.sa_handler = act->sa_handler; + memcpy (&nact.sa_mask, &act->sa_mask, sizeof (sigset_t)); + nact.sa_flags = act->sa_flags; - nact.sa_restorer = ((act->sa_flags & SA_NOMASK) - ? &&restore_nomask : &&restore); + nact.sa_restorer = ((act->sa_flags & SA_NOMASK) + ? &&restore_nomask : &&restore); + nactp = &nact; + } + else + nactp = NULL; /* XXX The size argument hopefully will have to be changed to the real size of the user-level sigset_t. */ - result = __syscall_rt_sigaction (sig, &nact, oact, - _NSIG / (8 * sizeof (long int))); + result = __syscall_rt_sigaction (sig, nactp, oact, _NSIG / 8); if (result >= 0 || errno != ENOSYS) return result; |