consistently use _NSIG/8 idiom for kernel sigset size in sigaction

[musl] / src / signal / sigaction.c

diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index 7998950..ac9a3ac 100644 (file)
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -53,9 +53,9 @@ int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigact
                ksa.handler = sa->sa_handler;
                ksa.flags = sa->sa_flags | SA_RESTORER;
                ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __restore;
-               memcpy(&ksa.mask, &sa->sa_mask, sizeof ksa.mask);
+               memcpy(&ksa.mask, &sa->sa_mask, _NSIG/8);
        }
-       int r = __syscall(SYS_rt_sigaction, sig, sa?&ksa:0, old?&ksa_old:0, sizeof ksa.mask);
+       int r = __syscall(SYS_rt_sigaction, sig, sa?&ksa:0, old?&ksa_old:0, _NSIG/8);
        if (sig == SIGABRT && sa && sa->sa_handler != SIG_DFL) {
                UNLOCK(__abort_lock);
                __restore_sigs(&set);
@@ -63,7 +63,7 @@ int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigact
        if (old && !r) {
                old->sa_handler = ksa_old.handler;
                old->sa_flags = ksa_old.flags;
-               memcpy(&old->sa_mask, &ksa_old.mask, sizeof ksa_old.mask);
+               memcpy(&old->sa_mask, &ksa_old.mask, _NSIG/8);
        }
        return __syscall_ret(r);
 }