1 files changed, 75 insertions, 0 deletions
diff --git a/tests/basic/tier/file_lock.c b/tests/basic/tier/file_lock.c
new file mode 100644
index 00000000000..730cca92e42
--- /dev/null
+++ b/tests/basic/tier/file_lock.c
@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+
+void usage (void)
+{
+
+        printf ("Usage: testlock <filepath> [R|W]\n");
+        return;
+}
+
+
+int main (int argc, char *argv[])
+{
+        char *file_path = NULL;
+        int fd = -1;
+        struct flock lock = {0};
+        int ret = -1;
+        int c = 0;
+
+        if (argc != 3) {
+                usage ();
+                exit (1);
+        }
+
+        file_path = argv[1];
+        fd = open (file_path, O_RDWR);
+
+        if (-1 == fd) {
+                printf ("Failed to open file %s. %m\n", file_path);
+                exit (1);
+        }
+
+        /* TODO: Check for invalid input*/
+
+        if (!strcmp (argv[2], "W")) {
+                lock.l_type = F_WRLCK;
+                printf("Taking write lock\n");
+
+        } else {
+                lock.l_type = F_RDLCK;
+                printf("Taking read lock\n");
+        }
+
+        lock.l_whence = SEEK_SET;
+        lock.l_start = 0;
+        lock.l_len = 0;
+        lock.l_pid = getpid ();
+
+
+        printf ("Acquiring lock on %s\n", file_path);
+        ret = fcntl (fd, F_SETLK, &lock);
+        if (ret) {
+                printf ("Failed to acquire lock on %s (%m)\n", file_path);
+                close (fd);
+                exit (1);
+        }
+
+        sleep(10);
+
+        /*Unlock*/
+
+        printf ("Releasing lock on %s\n", file_path);
+        lock.l_type = F_UNLCK;
+        ret = fcntl (fd, F_SETLK, &lock);
+        if (ret) {
+                printf ("Failed to release lock on %s (%m)\n", file_path);
+        }
+
+        close (fd);
+        return ret;
+
+}