tests/9pfs: add local Tunlinkat directory test
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> Reviewed-by: Greg Kurz <groug@kaod.org> Message-Id: <3c7c65b476ba44bea6afd0b378b5287e1c671a32.1603285620.git.qemu_oss@crudebyte.com> Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
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2001880522
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@ -258,6 +258,7 @@ static const char *rmessage_name(uint8_t id)
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id == P9_RLOPEN ? "RLOPEN" :
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id == P9_RWRITE ? "RWRITE" :
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id == P9_RMKDIR ? "RMKDIR" :
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id == P9_RUNLINKAT ? "RUNLINKAT" :
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id == P9_RFLUSH ? "RFLUSH" :
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id == P9_RREADDIR ? "READDIR" :
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"<unknown>";
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@ -693,6 +694,33 @@ static void v9fs_rmkdir(P9Req *req, v9fs_qid *qid)
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v9fs_req_free(req);
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}
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/* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */
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static P9Req *v9fs_tunlinkat(QVirtio9P *v9p, uint32_t dirfd, const char *name,
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uint32_t flags, uint16_t tag)
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{
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P9Req *req;
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uint32_t body_size = 4 + 4;
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uint16_t string_size = v9fs_string_size(name);
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g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
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body_size += string_size;
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req = v9fs_req_init(v9p, body_size, P9_TUNLINKAT, tag);
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v9fs_uint32_write(req, dirfd);
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v9fs_string_write(req, name);
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v9fs_uint32_write(req, flags);
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v9fs_req_send(req);
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return req;
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}
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/* size[4] Runlinkat tag[2] */
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static void v9fs_runlinkat(P9Req *req)
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{
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v9fs_req_recv(req, P9_RUNLINKAT);
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v9fs_req_free(req);
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}
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/* basic readdir test where reply fits into a single response message */
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static void fs_readdir(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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@ -1004,6 +1032,22 @@ static void do_mkdir(QVirtio9P *v9p, const char *path, const char *cname)
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g_free(name);
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}
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static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath,
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uint32_t flags)
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{
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char *const name = g_strdup(rpath);
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uint32_t fid;
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P9Req *req;
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fid = do_walk(v9p, atpath);
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req = v9fs_tunlinkat(v9p, fid, name, flags, 0);
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v9fs_req_wait_for_reply(req, NULL);
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v9fs_runlinkat(req);
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g_free(name);
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}
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static void fs_readdir_split_128(void *obj, void *data,
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QGuestAllocator *t_alloc)
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{
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@ -1050,6 +1094,32 @@ static void fs_create_dir(void *obj, void *data, QGuestAllocator *t_alloc)
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g_free(root_path);
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}
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static void fs_unlinkat_dir(void *obj, void *data, QGuestAllocator *t_alloc)
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{
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QVirtio9P *v9p = obj;
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alloc = t_alloc;
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struct stat st;
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char *root_path = virtio_9p_test_path("");
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char *new_dir = virtio_9p_test_path("02");
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g_assert(root_path != NULL);
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do_attach(v9p);
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do_mkdir(v9p, "/", "02");
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/* check if created directory really exists now ... */
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g_assert(stat(new_dir, &st) == 0);
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/* ... and is actually a directory */
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g_assert((st.st_mode & S_IFMT) == S_IFDIR);
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do_unlinkat(v9p, "/", "02", AT_REMOVEDIR);
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/* directory should be gone now */
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g_assert(stat(new_dir, &st) != 0);
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g_free(new_dir);
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g_free(root_path);
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}
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static void *assign_9p_local_driver(GString *cmd_line, void *arg)
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{
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virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
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@ -1090,6 +1160,7 @@ static void register_virtio_9p_test(void)
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opts.before = assign_9p_local_driver;
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qos_add_test("local/config", "virtio-9p", pci_config, &opts);
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qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts);
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qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts);
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}
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libqos_init(register_virtio_9p_test);
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