[PATCH 4/8] tests/9pfs: add local unlinkat file test

[Christian Schoenebeck <qemu_oss@crudebyte.com>]

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

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 tests/qtest/virtio-9p-test.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
index 1b133f52bd..06a9f10d34 100644
--- a/tests/qtest/virtio-9p-test.c
+++ b/tests/qtest/virtio-9p-test.c
@@ -1194,6 +1194,28 @@ static void fs_create_file(void *obj, void *data, QGuestAllocator *t_alloc)
     g_free(new_file);
 }
 
+static void fs_unlinkat_file(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    struct stat st;
+    char *new_file = virtio_9p_test_path("04/doa_file");
+
+    fs_attach(v9p, NULL, t_alloc);
+    fs_mkdir(v9p, data, t_alloc, "/", "04");
+    fs_lcreate(v9p, data, t_alloc, "04", "doa_file");
+
+    /* check if created file exists now ... */
+    g_assert(stat(new_file, &st) == 0);
+    /* ... and is a regular file */
+    g_assert((st.st_mode & S_IFMT) == S_IFREG);
+
+    fs_unlinkat(v9p, data, t_alloc, "04", "doa_file", 0);
+    /* file should be gone now */
+    g_assert(stat(new_file, &st) != 0);
+
+    g_free(new_file);
+}
+
 static void *assign_9p_local_driver(GString *cmd_line, void *arg)
 {
     virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
@@ -1236,6 +1258,7 @@ static void register_virtio_9p_test(void)
     qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts);
     qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts);
     qos_add_test("local/create_file", "virtio-9p", fs_create_file, &opts);
+    qos_add_test("local/unlinkat_file", "virtio-9p", fs_unlinkat_file, &opts);
 }
 
 libqos_init(register_virtio_9p_test);
-- 
2.20.1