[LTP] [PATCH v2 1/6] Rewrite mountns01 test using new LTP API
Andrea Cervesato
andrea.cervesato@suse.de
Mon Feb 28 14:32:51 CET 2022
Removed libclone from Makefile and used LTP API to replace it.
mountns01 has been adapted to use the new LTP API.
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.de>
---
testcases/kernel/containers/mountns/mountns.h | 50 ++++++
.../kernel/containers/mountns/mountns01.c | 148 ++++++++----------
2 files changed, 114 insertions(+), 84 deletions(-)
create mode 100644 testcases/kernel/containers/mountns/mountns.h
diff --git a/testcases/kernel/containers/mountns/mountns.h b/testcases/kernel/containers/mountns/mountns.h
new file mode 100644
index 000000000..ad8befa71
--- /dev/null
+++ b/testcases/kernel/containers/mountns/mountns.h
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2014 Red Hat, Inc.
+ * Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+#ifndef COMMON_H
+#define COMMON_H
+
+#include "tst_test.h"
+#include "lapi/namespaces_constants.h"
+
+#define DIRA "A"
+#define DIRB "B"
+
+static int dummy_child(void *v)
+{
+ (void)v;
+ return 0;
+}
+
+static void check_newns(void)
+{
+ int pid, status;
+
+ pid = ltp_clone_quick(CLONE_NEWNS | SIGCHLD, dummy_child, NULL);
+ if (pid < 0)
+ tst_brk(TCONF, "CLONE_NEWNS not supported");
+
+ SAFE_WAIT(&status);
+}
+
+static void umount_folders(void)
+{
+ if (tst_is_mounted(DIRA))
+ SAFE_UMOUNT(DIRA);
+
+ if (tst_is_mounted(DIRB))
+ SAFE_UMOUNT(DIRB);
+}
+
+static void create_folders(void)
+{
+ SAFE_MKDIR(DIRA, 0777);
+ SAFE_MKDIR(DIRB, 0777);
+ SAFE_TOUCH(DIRA "/A", 0, NULL);
+ SAFE_TOUCH(DIRB "/B", 0, NULL);
+}
+
+#endif
diff --git a/testcases/kernel/containers/mountns/mountns01.c b/testcases/kernel/containers/mountns/mountns01.c
index 0bd0c592c..3d2d836db 100644
--- a/testcases/kernel/containers/mountns/mountns01.c
+++ b/testcases/kernel/containers/mountns/mountns01.c
@@ -1,22 +1,17 @@
-/* Copyright (c) 2014 Red Hat, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of version 2 the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- ***********************************************************************
- * File: mountns01.c
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2014 Red Hat, Inc.
+ * Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * [Description]
*
* Tests a shared mount: shared mount can be replicated to as many
* mountpoints and all the replicas continue to be exactly same.
- * Description:
+ *
+ * [Algorithm]
+ *
* 1. Creates directories "A", "B" and files "A/A", "B/B"
* 2. Unshares mount namespace and makes it private (so mounts/umounts
* have no effect on a real system)
@@ -25,125 +20,110 @@
* 5. Clones a new child process with CLONE_NEWNS flag
* 6. There are two test cases (where X is parent namespace and Y child
* namespace):
- * 1)
+ * 1)
* X: bind mounts "B" to "A"
* Y: must see "A/B"
* X: umounts "A"
- * 2)
+ * 2)
* Y: bind mounts "B" to "A"
* X: must see "A/B"
* Y: umounts "A"
- ***********************************************************************/
+ */
-#define _GNU_SOURCE
#include <sys/wait.h>
#include <sys/mount.h>
-#include <stdio.h>
-#include <errno.h>
-#include "mountns_helper.h"
-#include "test.h"
-#include "safe_macros.h"
-
-char *TCID = "mountns01";
-int TST_TOTAL = 2;
+#include "mountns.h"
+#include "tst_test.h"
-#if defined(MS_SHARED) && defined(MS_PRIVATE) && defined(MS_REC)
-
-int child_func(void *arg LTP_ATTRIBUTE_UNUSED)
+static int child_func(LTP_ATTRIBUTE_UNUSED void *arg)
{
int ret = 0;
- TST_SAFE_CHECKPOINT_WAIT(NULL, 0);
+ TST_CHECKPOINT_WAIT(0);
- if (access(DIRA"/B", F_OK) == -1)
+ if (access(DIRA "/B", F_OK) < 0)
ret = 2;
- TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0);
+ TST_CHECKPOINT_WAKE_AND_WAIT(0);
- /* bind mounts DIRB to DIRA making contents of DIRB visible
- * in DIRA */
- if (mount(DIRB, DIRA, "none", MS_BIND, NULL) == -1) {
- perror("mount");
- return 1;
- }
+ /* bind mounts DIRB to DIRA making contents of DIRB visible in DIRA */
+ SAFE_MOUNT(DIRB, DIRA, "none", MS_BIND, NULL);
- TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0);
+ TST_CHECKPOINT_WAKE_AND_WAIT(0);
+
+ SAFE_UMOUNT(DIRA);
- umount(DIRA);
return ret;
}
-static void test(void)
+static void run(void)
{
- int status;
+ int status, ret;
/* unshares the mount ns */
- if (unshare(CLONE_NEWNS) == -1)
- tst_brkm(TBROK | TERRNO, cleanup, "unshare failed");
+ SAFE_UNSHARE(CLONE_NEWNS);
+
/* makes sure parent mounts/umounts have no effect on a real system */
- SAFE_MOUNT(cleanup, "none", "/", "none", MS_REC|MS_PRIVATE, NULL);
+ SAFE_MOUNT("none", "/", "none", MS_REC | MS_PRIVATE, NULL);
/* bind mounts DIRA to itself */
- SAFE_MOUNT(cleanup, DIRA, DIRA, "none", MS_BIND, NULL);
+ SAFE_MOUNT(DIRA, DIRA, "none", MS_BIND, NULL);
/* makes mount DIRA shared */
- SAFE_MOUNT(cleanup, "none", DIRA, "none", MS_SHARED, NULL);
+ SAFE_MOUNT("none", DIRA, "none", MS_SHARED, NULL);
- if (do_clone_tests(CLONE_NEWNS, child_func, NULL, NULL, NULL) == -1)
- tst_brkm(TBROK | TERRNO, cleanup, "clone failed");
+ ret = ltp_clone_quick(CLONE_NEWNS | SIGCHLD, child_func, NULL);
+ if (ret < 0)
+ tst_brk(TBROK, "clone failed");
- /* bind mounts DIRB to DIRA making contents of DIRB visible
- * in DIRA */
- SAFE_MOUNT(cleanup, DIRB, DIRA, "none", MS_BIND, NULL);
+ /* bind mounts DIRB to DIRA making contents of DIRB visible in DIRA */
+ SAFE_MOUNT(DIRB, DIRA, "none", MS_BIND, NULL);
- TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(cleanup, 0);
+ TST_CHECKPOINT_WAKE_AND_WAIT(0);
- SAFE_UMOUNT(cleanup, DIRA);
+ SAFE_UMOUNT(DIRA);
- TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(cleanup, 0);
+ TST_CHECKPOINT_WAKE_AND_WAIT(0);
- if (access(DIRA"/B", F_OK) == 0)
- tst_resm(TPASS, "shared mount in child passed");
+ if (access(DIRA "/B", F_OK) == 0)
+ tst_res(TPASS, "shared mount in child passed");
else
- tst_resm(TFAIL, "shared mount in child failed");
+ tst_res(TFAIL, "shared mount in child failed");
- TST_SAFE_CHECKPOINT_WAKE(cleanup, 0);
+ TST_CHECKPOINT_WAKE(0);
+ SAFE_WAIT(&status);
- SAFE_WAIT(cleanup, &status);
if (WIFEXITED(status)) {
if ((WEXITSTATUS(status) == 0))
- tst_resm(TPASS, "shared mount in parent passed");
+ tst_res(TPASS, "shared mount in parent passed");
else
- tst_resm(TFAIL, "shared mount in parent failed");
+ tst_res(TFAIL, "shared mount in parent failed");
}
+
if (WIFSIGNALED(status)) {
- tst_resm(TBROK, "child was killed with signal %s",
- tst_strsig(WTERMSIG(status)));
- return;
+ tst_brk(TBROK, "child was killed with signal %s",
+ tst_strsig(WTERMSIG(status)));
}
- SAFE_UMOUNT(cleanup, DIRA);
+ SAFE_UMOUNT(DIRA);
}
-int main(int argc, char *argv[])
+static void setup(void)
{
- int lc;
-
- tst_parse_opts(argc, argv, NULL, NULL);
-
- setup();
-
- for (lc = 0; TEST_LOOPING(lc); lc++)
- test();
-
- cleanup();
- tst_exit();
+ check_newns();
+ create_folders();
}
-#else
-int main(void)
+static void cleanup(void)
{
- tst_brkm(TCONF, NULL, "needed mountflags are not defined");
+ umount_folders();
}
-#endif
+
+static struct tst_test test = {
+ .setup = setup,
+ .cleanup = cleanup,
+ .test_all = run,
+ .needs_root = 1,
+ .needs_checkpoints = 1,
+};
--
2.35.1
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