diff mbox series

[2/8] tests/9pfs: add local unlinkat directory test

Message ID a42df8544e913b8c0bf1702d0788724d79103110.1603149434.git.qemu_oss@crudebyte.com
State Superseded
Headers show
Series 9pfs: more local tests | expand

Commit Message

Christian Schoenebeck Oct. 19, 2020, 11:13 p.m. UTC
This test case uses a Tunlinkat 9p request with flag AT_REMOVEDIR
(see 'man 2 unlink') to remove a directory from host's test directory.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 tests/qtest/virtio-9p-test.c | 72 ++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
diff mbox series

Patch

diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
index dc724bbb1e..990d074d33 100644
--- a/tests/qtest/virtio-9p-test.c
+++ b/tests/qtest/virtio-9p-test.c
@@ -258,6 +258,7 @@  static const char *rmessage_name(uint8_t id)
         id == P9_RLOPEN ? "RLOPEN" :
         id == P9_RWRITE ? "RWRITE" :
         id == P9_RMKDIR ? "RMKDIR" :
+        id == P9_RUNLINKAT ? "RUNLINKAT" :
         id == P9_RFLUSH ? "RFLUSH" :
         id == P9_RREADDIR ? "READDIR" :
         "<unknown>";
@@ -668,6 +669,33 @@  static void v9fs_rmkdir(P9Req *req, v9fs_qid *qid)
     v9fs_req_free(req);
 }
 
+/* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */
+static P9Req *v9fs_tunlinkat(QVirtio9P *v9p, uint32_t dirfd, const char *name,
+                             uint32_t flags, uint16_t tag)
+{
+    P9Req *req;
+
+    uint32_t body_size = 4 + 4;
+    uint16_t string_size = v9fs_string_size(name);
+
+    g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
+    body_size += string_size;
+
+    req = v9fs_req_init(v9p, body_size, P9_TUNLINKAT, tag);
+    v9fs_uint32_write(req, dirfd);
+    v9fs_string_write(req, name);
+    v9fs_uint32_write(req, flags);
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Runlinkat tag[2] */
+static void v9fs_runlinkat(P9Req *req)
+{
+    v9fs_req_recv(req, P9_RUNLINKAT);
+    v9fs_req_free(req);
+}
+
 /* basic readdir test where reply fits into a single response message */
 static void fs_readdir(void *obj, void *data, QGuestAllocator *t_alloc)
 {
@@ -1004,6 +1032,24 @@  static void fs_mkdir(void *obj, void *data, QGuestAllocator *t_alloc,
     g_free(name);
 }
 
+static void fs_unlinkat(void *obj, void *data, QGuestAllocator *t_alloc,
+                        const char *atpath, const char *rpath, uint32_t flags)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const name = g_strdup(rpath);
+    uint32_t fid;
+    P9Req *req;
+
+    fid = fs_walk_fid(v9p, data, t_alloc, atpath);
+
+    req = v9fs_tunlinkat(v9p, fid, name, flags, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_runlinkat(req);
+
+    g_free(name);
+}
+
 static void fs_readdir_split_128(void *obj, void *data,
                                  QGuestAllocator *t_alloc)
 {
@@ -1046,6 +1092,31 @@  static void fs_create_dir(void *obj, void *data, QGuestAllocator *t_alloc)
     g_free(root_path);
 }
 
+static void fs_unlinkat_dir(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    struct stat st;
+    char *root_path = virtio_9p_test_path("");
+    char *new_dir = virtio_9p_test_path("02");
+
+    g_assert(root_path != NULL);
+
+    fs_attach(v9p, NULL, t_alloc);
+    fs_mkdir(v9p, data, t_alloc, "/", "02");
+
+    /* check if created directory really exists now ... */
+    g_assert(stat(new_dir, &st) == 0);
+    /* ... and is actually a directory */
+    g_assert((st.st_mode & S_IFMT) == S_IFDIR);
+
+    fs_unlinkat(v9p, data, t_alloc, "/", "02", AT_REMOVEDIR);
+    /* directory should be gone now */
+    g_assert(stat(new_dir, &st) != 0);
+
+    g_free(new_dir);
+    g_free(root_path);
+}
+
 static void *assign_9p_local_driver(GString *cmd_line, void *arg)
 {
     virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
@@ -1086,6 +1157,7 @@  static void register_virtio_9p_test(void)
     opts.before = assign_9p_local_driver;
     qos_add_test("local/config", "virtio-9p", pci_config,  &opts);
     qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts);
+    qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts);
 }
 
 libqos_init(register_virtio_9p_test);