1 files changed, 23 insertions, 0 deletions
diff --git a/src/signal/sigprocmask.c b/src/signal/sigprocmask.c
new file mode 100644
index 00000000..e89f8765
--- /dev/null
+++ b/src/signal/sigprocmask.c
@@ -0,0 +1,23 @@
+#include <signal.h>
+#include "syscall.h"
+#include "libc.h"
+
+int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old)
+{
+	return syscall4(__NR_rt_sigprocmask, how, (long)set, (long)old, 8);
+}
+
+int __sigprocmask(int how, const sigset_t *set, sigset_t *old)
+{
+	sigset_t tmp;
+	/* Quickly mask out bits 32 and 33 (thread control signals) */
+	if (0 && how != SIG_UNBLOCK && (set->__bits[4/sizeof *set->__bits] & 3UL<<(32&8*sizeof *set->__bits-1))) {
+		tmp = *set;
+		set = &tmp;
+		tmp.__bits[4/sizeof *set->__bits] &= ~(3UL<<(32&8*sizeof *set->__bits-1));
+	}
+	return __libc_sigprocmask(how, set, old);
+}
+
+weak_alias(__sigprocmask, sigprocmask);
+weak_alias(__sigprocmask, pthread_sigmask);