1 files changed, 11 insertions, 0 deletions
diff --git a/lock_exnb.c b/lock_exnb.c
new file mode 100644
index 0000000..5d2a14a
--- /dev/null
+++ b/lock_exnb.c
@@ -0,0 +1,11 @@
+#include <sys/types.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include "hasflock.h"
+#include "lock.h"
+
+#ifdef HASFLOCK
+int lock_exnb(fd) int fd; { return flock(fd,LOCK_EX | LOCK_NB); }
+#else
+int lock_exnb(fd) int fd; { return lockf(fd,2,0); }
+#endif