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-rw-r--r--lib/include/util.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/include/util.h b/lib/include/util.h
new file mode 100644
index 0000000..884eeab
--- /dev/null
+++ b/lib/include/util.h
@@ -0,0 +1,26 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <signal.h>
+
+static inline void cli(sigset_t *old_mask)
+{
+ sigset_t mask;
+
+ sigfillset(&mask);
+ sigprocmask(SIG_SETMASK, &mask, old_mask);
+}
+
+static inline void sti(const sigset_t *old_mask)
+{
+ sigset_t mask;
+
+ if (old_mask == NULL) {
+ sigemptyset(&mask);
+ sigprocmask(SIG_SETMASK, &mask, NULL);
+ } else {
+ sigprocmask(SIG_SETMASK, old_mask, NULL);
+ }
+}
+
+#endif /* UTIL_H */