1 files changed, 84 insertions, 0 deletions
diff --git a/liblock/locktest.c b/liblock/locktest.c
new file mode 100644
index 0000000..596d28a
--- /dev/null
+++ b/liblock/locktest.c
@@ -0,0 +1,84 @@
+/*
+** Copyright 1998 - 1999 Double Precision, Inc.  See COPYING for
+** distribution information.
+*/
+
+/* $Id */
+
+#include	"liblock.h"
+#if	USE_FCNTL
+#include	"lockfcntl.c"
+#endif
+#if	USE_FLOCK
+#include	"lockflock.c"
+#endif
+#if	USE_LOCKF
+#include	"locklockf.c"
+#endif
+#include	<signal.h>
+#include	<stdlib.h>
+
+int main()
+{
+int	fd[2];
+pid_t	p;
+int	s;
+int	f;
+
+	signal(SIGCHLD, SIG_DFL);
+	if (pipe(fd))
+	{
+		perror("pipe");
+		return (1);
+	}
+
+	if ((p=fork()) == (pid_t)-1)
+	{
+		perror("fork");
+		return (1);
+	}
+
+	if (p == 0)
+	{
+	char	c;
+
+		close(fd[1]);
+		read(fd[0], &c, 1);
+		close(fd[0]);
+
+		if ((f=open("conftest.lock", O_RDWR|O_CREAT, 0644)) < 0)
+		{
+			perror("open");
+			exit(1);
+		}
+		alarm(5);
+
+		if (ll_lockfd(f, ll_writelock, 0, 0))
+		{
+			close(f);
+			exit(0);
+		}
+		close(f);
+		exit(1);
+	}
+	
+	if ((f=open("conftest.lock", O_RDWR|O_CREAT, 0644)) < 0)
+	{
+		perror("open");
+		exit(1);
+	}
+
+	if (ll_lockfd(f, ll_writelock, 0, 0))
+	{
+		perror("lock");
+		close(f);
+		exit(1);
+	}
+	close(fd[1]);
+	close(fd[0]);
+	while (wait(&s) != p)
+		;
+	if (s == 0)
+		exit(0);
+	exit(1);
+}