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Thu, 22 Oct 2020 11:02:44 +0200 Authentication-Results: garm.ovh; auth=pass (GARM-100R00382599e24-f80c-48ef-8d2c-87822315e2a8, 519BB44447FDA57395BBEBCDF0C34CC9BD4694BF) smtp.auth=groug@kaod.org Date: Thu, 22 Oct 2020 11:02:44 +0200 From: Greg Kurz To: Christian Schoenebeck Subject: Re: [PATCH v2 7/8] tests/9pfs: add local Tlink test Message-ID: <20201022110244.3abc6c85@bahia.lan> In-Reply-To: References: X-Mailer: Claws Mail 3.17.7 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [37.59.142.100] X-ClientProxiedBy: DAG8EX2.mxp5.local (172.16.2.72) To DAG8EX1.mxp5.local (172.16.2.71) X-Ovh-Tracer-GUID: b9d901fd-3cc4-47cc-aefd-8011b4e086bf X-Ovh-Tracer-Id: 5383208932490647962 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: 0 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedujedrjeejgdduudcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecunecujfgurhepfffhvffukfgjfhfogggtgfhisehtjeertdertddvnecuhfhrohhmpefirhgvghcumfhurhiiuceoghhrohhugheskhgrohgurdhorhhgqeenucggtffrrghtthgvrhhnpeefuddtieejjeevheekieeltefgleetkeetheettdeifeffvefhffelffdtfeeljeenucfkpheptddrtddrtddrtddpfeejrdehledrudegvddruddttdenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhhouggvpehsmhhtphdqohhuthdphhgvlhhopehmgihplhgrnhehrdhmrghilhdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomhepghhrohhugheskhgrohgurdhorhhgpdhrtghpthhtohepqhgvmhhuqdguvghvvghlsehnohhnghhnuhdrohhrgh Received-SPF: pass client-ip=178.32.125.2; envelope-from=groug@kaod.org; helo=smtpout1.mo529.mail-out.ovh.net X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 04:37:03 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, 21 Oct 2020 14:51:09 +0200 Christian Schoenebeck wrote: > This test case uses a Tlink request to create a hard link to a regular > file using the 9pfs 'local' fs driver. > > Signed-off-by: Christian Schoenebeck > --- Reviewed-by: Greg Kurz > tests/qtest/virtio-9p-test.c | 71 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 71 insertions(+) > > diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c > index 33cba24b18..460fa49fe3 100644 > --- a/tests/qtest/virtio-9p-test.c > +++ b/tests/qtest/virtio-9p-test.c > @@ -260,6 +260,7 @@ static const char *rmessage_name(uint8_t id) > id == P9_RMKDIR ? "RMKDIR" : > id == P9_RLCREATE ? "RLCREATE" : > id == P9_RSYMLINK ? "RSYMLINK" : > + id == P9_RLINK ? "RLINK" : > id == P9_RUNLINKAT ? "RUNLINKAT" : > id == P9_RFLUSH ? "RFLUSH" : > id == P9_RREADDIR ? "READDIR" : > @@ -767,6 +768,33 @@ static void v9fs_rsymlink(P9Req *req, v9fs_qid *qid) > v9fs_req_free(req); > } > > +/* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */ > +static P9Req *v9fs_tlink(QVirtio9P *v9p, uint32_t dfid, uint32_t fid, > + const char *name, 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_TLINK, tag); > + v9fs_uint32_write(req, dfid); > + v9fs_uint32_write(req, fid); > + v9fs_string_write(req, name); > + v9fs_req_send(req); > + return req; > +} > + > +/* size[4] Rlink tag[2] */ > +static void v9fs_rlink(P9Req *req) > +{ > + v9fs_req_recv(req, P9_RLINK); > + 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) > @@ -1142,6 +1170,21 @@ static void do_symlink(QVirtio9P *v9p, const char *path, const char *clink, > g_free(name); > } > > +/* create a hard link named @a clink in directory @a path pointing to @a to */ > +static void do_hardlink(QVirtio9P *v9p, const char *path, const char *clink, > + const char *to) > +{ > + uint32_t dfid, fid; > + P9Req *req; > + > + dfid = do_walk(v9p, path); > + fid = do_walk(v9p, to); > + > + req = v9fs_tlink(v9p, dfid, fid, clink, 0); > + v9fs_req_wait_for_reply(req, NULL); > + v9fs_rlink(req); > +} > + > static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath, > uint32_t flags) > { > @@ -1321,6 +1364,33 @@ static void fs_unlinkat_symlink(void *obj, void *data, > g_free(real_file); > } > > +static void fs_hardlink_file(void *obj, void *data, QGuestAllocator *t_alloc) > +{ > + QVirtio9P *v9p = obj; > + alloc = t_alloc; > + struct stat st_real, st_link; > + char *real_file = virtio_9p_test_path("07/real_file"); > + char *hardlink_file = virtio_9p_test_path("07/hardlink_file"); > + > + do_attach(v9p); > + do_mkdir(v9p, "/", "07"); > + do_lcreate(v9p, "07", "real_file"); > + g_assert(stat(real_file, &st_real) == 0); > + g_assert((st_real.st_mode & S_IFMT) == S_IFREG); > + > + do_hardlink(v9p, "07", "hardlink_file", "07/real_file"); > + > + /* check if link exists now ... */ > + g_assert(stat(hardlink_file, &st_link) == 0); > + /* ... and it's a hard link, right? */ > + g_assert((st_link.st_mode & S_IFMT) == S_IFREG); > + g_assert(st_link.st_dev == st_real.st_dev); > + g_assert(st_link.st_ino == st_real.st_ino); > + > + g_free(hardlink_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"); > @@ -1367,6 +1437,7 @@ static void register_virtio_9p_test(void) > qos_add_test("local/symlink_file", "virtio-9p", fs_symlink_file, &opts); > qos_add_test("local/unlinkat_symlink", "virtio-9p", fs_unlinkat_symlink, > &opts); > + qos_add_test("local/hardlink_file", "virtio-9p", fs_hardlink_file, &opts); > } > > libqos_init(register_virtio_9p_test);