From patchwork Wed Oct 21 12:51:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Schoenebeck X-Patchwork-Id: 302398 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0EE95C388F9 for ; Wed, 21 Oct 2020 13:29:02 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 483D62071A for ; Wed, 21 Oct 2020 13:29:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=crudebyte.com header.i=@crudebyte.com header.b="Xbc+Cxux" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 483D62071A Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=crudebyte.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47218 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVEAm-0002FC-8g for qemu-devel@archiver.kernel.org; Wed, 21 Oct 2020 09:29:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60128) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVE5b-00040e-59 for qemu-devel@nongnu.org; Wed, 21 Oct 2020 09:23:39 -0400 Received: from lizzy.crudebyte.com ([91.194.90.13]:50157) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVE5Z-0003YZ-9s for qemu-devel@nongnu.org; Wed, 21 Oct 2020 09:23:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=crudebyte.com; s=lizzy; h=Cc:To:Subject:Date:From:References:In-Reply-To: Message-Id:Content-Type:Content-Transfer-Encoding:MIME-Version:Content-ID: Content-Description; bh=DmxaprmQliFXt3vNWXf9vmVSfTGO0c81/rVQ3TXHq94=; b=Xbc+C xuxoo5zkJaA38aMX5F6PrlIAHVarYzwqo1S7Tn5WmcC76Pe0BHVMmiEjYvw3ggUTz0qa3uCMfVI3T VtAP7hNralWFXZdM21xEO4UdXj/gZnC4LnxqSNTOq4MithSydNKTOwdIT/Id4cSZ+xZlcmqMxttb4 Y0Pp/8KhngNateKDrIdAkCQ7ubMuoDPICXkmR7FZmnNqueflYzNQvFWxdOAz++O/2vXdE+/Mr6jrP /1/ctkHQrvEjVmi2+JIw/SfBpXb2n1yENp8XP1pVsj2CAVM1QeijiOb3YJ+88Og7rxYDVoYeuuw4P JEyHKqdNXKxNEqT5iaMJwEgh+zR8Q==; Message-Id: In-Reply-To: References: From: Christian Schoenebeck Date: Wed, 21 Oct 2020 14:51:09 +0200 Subject: [PATCH v2 7/8] tests/9pfs: add local Tlink test To: qemu-devel@nongnu.org Cc: Greg Kurz Received-SPF: none client-ip=91.194.90.13; envelope-from=f0d869770ad23ee5ce10f7da90fdb742cadcad72@lizzy.crudebyte.com; helo=lizzy.crudebyte.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/21 09:21:52 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_NONE=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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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);