[PULL v2 14/16] tests/9pfs: add local Tunlinkat symlink test

[Christian Schoenebeck <qemu_oss@crudebyte.com>]

This test case uses a Tunlinkat request to remove a symlink using
the 9pfs 'local' fs driver.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <a23cd4d2ab6d8d3048addab8cbf0416fe5ead43e.1603285620.git.qemu_oss@crudebyte.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 tests/qtest/virtio-9p-test.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
index 0c11417236..33cba24b18 100644
--- a/tests/qtest/virtio-9p-test.c
+++ b/tests/qtest/virtio-9p-test.c
@@ -1295,6 +1295,32 @@ static void fs_symlink_file(void *obj, void *data, QGuestAllocator *t_alloc)
     g_free(real_file);
 }
 
+static void fs_unlinkat_symlink(void *obj, void *data,
+                                QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    struct stat st;
+    char *real_file = virtio_9p_test_path("06/real_file");
+    char *symlink_file = virtio_9p_test_path("06/symlink_file");
+
+    do_attach(v9p);
+    do_mkdir(v9p, "/", "06");
+    do_lcreate(v9p, "06", "real_file");
+    g_assert(stat(real_file, &st) == 0);
+    g_assert((st.st_mode & S_IFMT) == S_IFREG);
+
+    do_symlink(v9p, "06", "symlink_file", "real_file");
+    g_assert(stat(symlink_file, &st) == 0);
+
+    do_unlinkat(v9p, "06", "symlink_file", 0);
+    /* symlink should be gone now */
+    g_assert(stat(symlink_file, &st) != 0);
+
+    g_free(symlink_file);
+    g_free(real_file);
+}
+
 static void *assign_9p_local_driver(GString *cmd_line, void *arg)
 {
     virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
@@ -1339,6 +1365,8 @@ static void register_virtio_9p_test(void)
     qos_add_test("local/create_file", "virtio-9p", fs_create_file, &opts);
     qos_add_test("local/unlinkat_file", "virtio-9p", fs_unlinkat_file, &opts);
     qos_add_test("local/symlink_file", "virtio-9p", fs_symlink_file, &opts);
+    qos_add_test("local/unlinkat_symlink", "virtio-9p", fs_unlinkat_symlink,
+                 &opts);
 }
 
 libqos_init(register_virtio_9p_test);
-- 
2.20.1