[LTP] [PATCH 1/3] fdatasync01: Convert to new API

[LTP] [PATCH 1/3] fdatasync01: Convert to new API

[Shiyang Ruan]

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
---
 .../kernel/syscalls/fdatasync/fdatasync01.c   | 164 +++---------------
 1 file changed, 26 insertions(+), 138 deletions(-)

diff --git a/testcases/kernel/syscalls/fdatasync/fdatasync01.c b/testcases/kernel/syscalls/fdatasync/fdatasync01.c
index 24a91785c..ba4375b68 100644
--- a/testcases/kernel/syscalls/fdatasync/fdatasync01.c
+++ b/testcases/kernel/syscalls/fdatasync/fdatasync01.c
@@ -1,155 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
+ * Copyright (c) Linux Test Project, 2003-2024
  */
-/**********************************************************
- *
- *    TEST IDENTIFIER   : fdatasync01
- *
- *    EXECUTED BY       : Any user
- *
- *    TEST TITLE        : Basic test for fdatasync(2)
- *
- *    TEST CASE TOTAL   : 1
- *
- *    AUTHOR            : Madhu T L <madhu.tarikere@wipro.com>
- *
- *    SIGNALS
- *	Uses SIGUSR1 to pause before test if option set.
- *	(See the parse_opts(3) man page).
- *
- *    DESCRIPTION
- *	This is a Phase I test for the fdatasync(2) system call.
- *	It is intended to provide a limited exposure of the system call.
- *
- *	Setup:
- *	  Setup signal handling.
- *	  Pause for SIGUSR1 if option specified.
- *	  Create a temp directory and cd to it
- *	  Initialize filename and open it in write mode for each child process.
- *
- *	Test:
- *	 Loop if the proper options are given.
- *	  Execute system call
- *	  Check return code, if system call failed (return=-1)
- *		Issue FAIL message with errno.
- *	  Otherwise, Issue PASS message.
- *
- *	Cleanup:
- *	  Print errno log and/or timing stats if options given
- *	  Remove temporary directory and all files in it.
- *
- * USAGE:  <for command-line>
- *  fdatasync01 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
- *		where,  -c n : Run n copies concurrently.
- *			-e   : Turn on errno logging.
- *			-f   : Turn off functional testing
- *			-h   : Show help screen
- *			-i n : Execute test n times.
- *			-I x : Execute test for x seconds.
- *			-p   : Pause for SIGUSR1 before starting
- *			-P x : Pause for x seconds between iterations.
- *			-t   : Turn on syscall timing.
+
+/*\
+ * [Description]
  *
- ****************************************************************/
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include "test.h"
+ * Basic test for fdatasync(). Call fdatasync() on a fd and expect it to pass.
+ */
 
-static int fd;
-static char filename[30];
-static void setup(void);
-static void cleanup(void);
+#include "tst_test.h"
 
-char *TCID = "fdatasync01";
-int TST_TOTAL = 1;
+static int fd;
+static char pfilename[30];
 
-int main(int argc, char **argv)
+static void run(void)
 {
-	int lc;
-
-	tst_parse_opts(argc, argv, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-
-		/* reset tst_count in case we are looping */
-		tst_count = 0;
-
-		/* Test the system call */
-		TEST(fdatasync(fd));
-
-		/* check return code */
-		if (TEST_RETURN == -1) {
-			tst_resm(TFAIL, "fdatasync() failed, errno=%d : %s",
-				 TEST_ERRNO, strerror(TEST_ERRNO));
-		} else {
-			/* No Functional verification yet */
-			tst_resm(TPASS, "fdatasync() successful");
-		}
-	}
-
-	/* perform global cleanup and exit */
-	cleanup();
-
-	tst_exit();
-
+	TST_EXP_PASS(fdatasync(fd), "fdatasync(%d)", fd);
 }
 
-/* setup() - performs all ONE TIME setup for this test */
-void setup(void)
+static void setup(void)
 {
-
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	/* Pause if that option was specified
-	 * TEST_PAUSE contains the code to fork the test with the -c option.
-	 */
-	TEST_PAUSE;
-
-	tst_tmpdir();
-
 	/* Initialize unique filename for each child process */
-	if (sprintf(filename, "fdatasync_%d", getpid()) <= 0) {
-		tst_brkm(TBROK, cleanup, "Failed to initialize filename");
-	}
-	if ((fd = open(filename, O_CREAT | O_WRONLY, 0777)) == -1) {	//mode must be specified when O_CREATE is in the flag
-		tst_brkm(TBROK, cleanup, "open() failed");
-	}
-	if ((write(fd, filename, strlen(filename) + 1)) == -1) {
-		tst_brkm(TBROK, cleanup, "write() failed");
-	}
+	sprintf(pfilename, "fdatasync_%d", getpid());
+
+	/* mode must be specified when O_CREATE is in the flag */
+	fd = SAFE_OPEN(pfilename, O_CREAT | O_WRONLY, 0777);
+	SAFE_WRITE(SAFE_WRITE_ALL, fd, pfilename, strlen(pfilename) + 1);
 }
 
-/*
- * cleanup()
- *	performs all ONE TIME cleanup for this test at
- *	completion or premature exit
- */
-void cleanup(void)
+static void cleanup(void)
 {
-	/*
-	 * print timing stats if that option was specified.
-	 * print errno log if that option was specified.
-	 */
 	close(fd);
-
-	tst_rmdir();
-
 }
+
+static struct tst_test test = {
+	.needs_tmpdir = 1,
+	.test_all = run,
+	.setup = setup,
+	.cleanup = cleanup,
+};
-- 
2.34.1


-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

[LTP] [PATCH 2/3] fdatasync02: Convert to new API

[Shiyang Ruan]

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
---
 .../kernel/syscalls/fdatasync/fdatasync02.c   | 207 +++---------------
 1 file changed, 33 insertions(+), 174 deletions(-)

diff --git a/testcases/kernel/syscalls/fdatasync/fdatasync02.c b/testcases/kernel/syscalls/fdatasync/fdatasync02.c
index 9ce4fc7bb..89a815219 100644
--- a/testcases/kernel/syscalls/fdatasync/fdatasync02.c
+++ b/testcases/kernel/syscalls/fdatasync/fdatasync02.c
@@ -1,197 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
+ * Copyright (c) Linux Test Project, 2003-2024
  */
-/**********************************************************
- *
- *    TEST IDENTIFIER   : fdatasync02
- *
- *    EXECUTED BY       : Any user
- *
- *    TEST TITLE        : Checking error conditions for fdatasync(2)
- *
- *    TEST CASE TOTAL   : 2
- *
- *    AUTHOR            : Madhu T L <madhu.tarikere@wipro.com>
- *
- *    SIGNALS
- *      Uses SIGUSR1 to pause before test if option set.
- *      (See the parse_opts(3) man page).
- *
- *    DESCRIPTION
- *      Verify that,
- *      1. fdatasync(2) returns -1 and sets errno to EBADF for invalid
- *	   file descriptor.
- *      2. fdatasync(2) returns -1 and sets errno to EINVAL for file
- *         descriptor to a special file.
- *
- *      Setup:
- *        Setup signal handling.
- *        Set expected errnos for logging
- *        Pause for SIGUSR1 if option specified.
- *
- *      Test:
- *       Loop if the proper options are given.
- *	  Perform testcase specific setup (if needed)
- *        Execute system call
- *        Check return code and error number, if matching,
- *                   Issue PASS message
- *        Otherwise,
- *                   Issue FAIL message
- *	  Perform testcase specific cleanup (if needed)
- *
- *      Cleanup:
- *        Print errno log and/or timing stats if options given
- *
- * USAGE:  <for command-line>
- *  fdatasync02 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
- *		where,  -c n : Run n copies concurrently.
- *			-e   : Turn on errno logging.
- *			-f   : Turn off functional testing
- *			-h   : Show help screen
- *			-i n : Execute test n times.
- *			-I x : Execute test for x seconds.
- *			-p   : Pause for SIGUSR1 before starting
- *			-P x : Pause for x seconds between iterations.
- *			-t   : Turn on syscall timing.
+
+/*\
+ * [Description]
  *
- ****************************************************************/
+ * Verify that,
+ * 1. fdatasync(2) returns -1 and sets errno to EBADF for invalid file
+ *    descriptor.
+ * 2. fdatasync(2) returns -1 and sets errno to EINVAL for file descriptor to a
+ *    special file.
+ */
 
-#include <errno.h>
-#include <pwd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include "test.h"
-#include "safe_macros.h"
+#include "tst_test.h"
 
 #define EXP_RET_VAL	-1
 #define SPL_FILE	"/dev/null"
 
-struct test_case_t {		/* test case structure */
+static struct tcase {		/* test case structure */
+	int fd;
 	int experrno;		/* expected errno */
 	char *desc;
-	int (*setup) (void);	/* Individual setup routine */
-	void (*cleanup) (void);	/* Individual cleanup routine */
+} tcases[] = {
+	{ -1, EBADF, "invalid file descriptor" },
+	// initialize this fd later in setup()
+	{ -1, EINVAL, "file descriptor to a special file" },
 };
 
-char *TCID = "fdatasync02";
-
-static int testno;
-static int fd;
-
-static void setup(void);
-static void cleanup(void);
-static int setup1(void);
-static int setup2(void);
-static void cleanup2(void);
-
-static struct test_case_t tdat[] = {
-	{EBADF, "invalid file descriptor", setup1, NULL},
-	{EINVAL, "file descriptor to a special file", setup2, cleanup2},
-};
-
-int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
-
-int main(int argc, char **argv)
+static void run(unsigned int n)
 {
-	int lc;
+	struct tcase *tc = &tcases[n];
 
-	tst_parse_opts(argc, argv, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-		/* reset tst_count in case we are looping */
-		tst_count = 0;
-
-		for (testno = 0; testno < TST_TOTAL; ++testno) {
-			if ((tdat[testno].setup) && (tdat[testno].setup())) {
-				/* setup() failed, skip this test */
-				continue;
-			}
-
-			/* Test the system call */
-			TEST(fdatasync(fd));
-			if ((TEST_RETURN == EXP_RET_VAL) &&
-			    (TEST_ERRNO == tdat[testno].experrno)) {
-				tst_resm(TPASS, "Expected failure for %s, "
-					 "errno: %d", tdat[testno].desc,
-					 TEST_ERRNO);
-			} else {
-				tst_resm(TFAIL, "Unexpected results for %s ; "
-					 "returned %ld (expected %d), errno %d "
-					 "(expected %d)", tdat[testno].desc,
-					 TEST_RETURN, EXP_RET_VAL,
-					 TEST_ERRNO, tdat[testno].experrno);
-			}
-			if (tdat[testno].cleanup) {
-				tdat[testno].cleanup();
-			}
-		}
-	}
-	cleanup();
-
-	tst_exit();
-}
-
-int setup1(void)
-{
-	fd = -1;
-	return 0;
-}
-
-int setup2(void)
-{
-	/* Open special file */
-	if ((fd = open(SPL_FILE, O_RDONLY)) == -1) {
-		tst_resm(TBROK, "Failed to open %s", SPL_FILE);
-		return 1;
-	}
-	return 0;
+	TST_EXP_FAIL(fdatasync(tc->fd), tc->experrno,
+		     "fdatasync() for %s(%d)", tc->desc, tc->fd);
 }
 
-void cleanup2(void)
+static void setup(void)
 {
-	/* close special file */
-	SAFE_CLOSE(NULL, fd);
+	tcases[1].fd = SAFE_OPEN(SPL_FILE, O_RDONLY);
 }
 
-/*
- * setup()
- *	performs all ONE TIME setup for this test
- */
-void setup(void)
+static void cleanup(void)
 {
-
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	/* Pause if that option was specified
-	 * TEST_PAUSE contains the code to fork the test with the -c option.
-	 */
-	TEST_PAUSE;
-
+	SAFE_CLOSE(tcases[1].fd);
 }
 
-/*
- * cleanup()
- *	performs all ONE TIME cleanup for this test at
- *	completion or premature exit
- */
-void cleanup(void)
-{
-
-}
+static struct tst_test test = {
+	.needs_tmpdir = 1,
+	.test = run,
+	.tcnt = ARRAY_SIZE(tcases),
+	.setup = setup,
+	.cleanup = cleanup,
+};
-- 
2.34.1


-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

[LTP] [PATCH 3/3] fdatasync03: add [Description] tag and cleanup code

[Shiyang Ruan]

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
---
 testcases/kernel/syscalls/fdatasync/fdatasync03.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/testcases/kernel/syscalls/fdatasync/fdatasync03.c b/testcases/kernel/syscalls/fdatasync/fdatasync03.c
index 5f3e0c96f..257e413d0 100644
--- a/testcases/kernel/syscalls/fdatasync/fdatasync03.c
+++ b/testcases/kernel/syscalls/fdatasync/fdatasync03.c
@@ -4,8 +4,8 @@
  * Author: Sumit Garg <sumit.garg@linaro.org>
  */
 
-/*
- * fdatasync03
+/*\
+ * [Description]
  *
  * It basically tests fdatasync() to sync test file data having large dirty
  * file pages to block device. Also, it tests all supported filesystems on a
@@ -37,10 +37,7 @@ static void verify_fdatasync(void)
 
 	tst_fill_fd(fd, 0, TST_MB, FILE_SIZE_MB);
 
-	TEST(fdatasync(fd));
-
-	if (TST_RET)
-		tst_brk(TFAIL | TTERRNO, "fdatasync(fd) failed");
+	TST_EXP_PASS_SILENT(fdatasync(fd));
 
 	written = tst_dev_bytes_written(tst_device->dev);
 
-- 
2.34.1


-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

Re: [LTP] [PATCH 1/3] fdatasync01: Convert to new API

[Cyril Hrubis]

Hi!
> +// SPDX-License-Identifier: GPL-2.0-or-later
>  /*
>   * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of version 2 of the GNU General Public License as
> - * published by the Free Software Foundation.

This is GPL-2.0 not GPL-2.0-or-later and we can't change license for the
old tests unless it's a complete rewrite.

> - * This program is distributed in the hope that it would be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> - *
> - * You should have received a copy of the GNU General Public License along
> - * with this program; if not, write the Free Software Foundation, Inc.,
> - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> - *
> + * Copyright (c) Linux Test Project, 2003-2024
>   */
> -/**********************************************************
> - *
> - *    TEST IDENTIFIER   : fdatasync01
> - *
> - *    EXECUTED BY       : Any user
> - *
> - *    TEST TITLE        : Basic test for fdatasync(2)
> - *
> - *    TEST CASE TOTAL   : 1
> - *
> - *    AUTHOR            : Madhu T L <madhu.tarikere@wipro.com>
> - *
> - *    SIGNALS
> - *	Uses SIGUSR1 to pause before test if option set.
> - *	(See the parse_opts(3) man page).
> - *
> - *    DESCRIPTION
> - *	This is a Phase I test for the fdatasync(2) system call.
> - *	It is intended to provide a limited exposure of the system call.
> - *
> - *	Setup:
> - *	  Setup signal handling.
> - *	  Pause for SIGUSR1 if option specified.
> - *	  Create a temp directory and cd to it
> - *	  Initialize filename and open it in write mode for each child process.
> - *
> - *	Test:
> - *	 Loop if the proper options are given.
> - *	  Execute system call
> - *	  Check return code, if system call failed (return=-1)
> - *		Issue FAIL message with errno.
> - *	  Otherwise, Issue PASS message.
> - *
> - *	Cleanup:
> - *	  Print errno log and/or timing stats if options given
> - *	  Remove temporary directory and all files in it.
> - *
> - * USAGE:  <for command-line>
> - *  fdatasync01 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
> - *		where,  -c n : Run n copies concurrently.
> - *			-e   : Turn on errno logging.
> - *			-f   : Turn off functional testing
> - *			-h   : Show help screen
> - *			-i n : Execute test n times.
> - *			-I x : Execute test for x seconds.
> - *			-p   : Pause for SIGUSR1 before starting
> - *			-P x : Pause for x seconds between iterations.
> - *			-t   : Turn on syscall timing.
> +
> +/*\
> + * [Description]
>   *
> - ****************************************************************/
> -#include <errno.h>
> -#include <sys/types.h>
> -#include <sys/stat.h>
> -#include <fcntl.h>
> -#include <unistd.h>
> -#include "test.h"
> + * Basic test for fdatasync(). Call fdatasync() on a fd and expect it to pass.
> + */
>  
> -static int fd;
> -static char filename[30];
> -static void setup(void);
> -static void cleanup(void);
> +#include "tst_test.h"
>  
> -char *TCID = "fdatasync01";
> -int TST_TOTAL = 1;
> +static int fd;
> +static char pfilename[30];
>  
> -int main(int argc, char **argv)
> +static void run(void)
>  {
> -	int lc;
> -
> -	tst_parse_opts(argc, argv, NULL, NULL);
> -
> -	setup();
> -
> -	for (lc = 0; TEST_LOOPING(lc); lc++) {
> -
> -		/* reset tst_count in case we are looping */
> -		tst_count = 0;
> -
> -		/* Test the system call */
> -		TEST(fdatasync(fd));
> -
> -		/* check return code */
> -		if (TEST_RETURN == -1) {
> -			tst_resm(TFAIL, "fdatasync() failed, errno=%d : %s",
> -				 TEST_ERRNO, strerror(TEST_ERRNO));
> -		} else {
> -			/* No Functional verification yet */
> -			tst_resm(TPASS, "fdatasync() successful");
> -		}
> -	}
> -
> -	/* perform global cleanup and exit */
> -	cleanup();
> -
> -	tst_exit();
> -
> +	TST_EXP_PASS(fdatasync(fd), "fdatasync(%d)", fd);
>  }
>  
> -/* setup() - performs all ONE TIME setup for this test */
> -void setup(void)
> +static void setup(void)
>  {
> -
> -	tst_sig(NOFORK, DEF_HANDLER, cleanup);
> -
> -	/* Pause if that option was specified
> -	 * TEST_PAUSE contains the code to fork the test with the -c option.
> -	 */
> -	TEST_PAUSE;
> -
> -	tst_tmpdir();
> -
>  	/* Initialize unique filename for each child process */

Such comments are useless and should be just removed.

> -	if (sprintf(filename, "fdatasync_%d", getpid()) <= 0) {
> -		tst_brkm(TBROK, cleanup, "Failed to initialize filename");
> -	}
> -	if ((fd = open(filename, O_CREAT | O_WRONLY, 0777)) == -1) {	//mode must be specified when O_CREATE is in the flag
> -		tst_brkm(TBROK, cleanup, "open() failed");
> -	}
> -	if ((write(fd, filename, strlen(filename) + 1)) == -1) {
> -		tst_brkm(TBROK, cleanup, "write() failed");
> -	}
> +	sprintf(pfilename, "fdatasync_%d", getpid());
> +
> +	/* mode must be specified when O_CREATE is in the flag */

Here as well.

> +	fd = SAFE_OPEN(pfilename, O_CREAT | O_WRONLY, 0777);
> +	SAFE_WRITE(SAFE_WRITE_ALL, fd, pfilename, strlen(pfilename) + 1);
>  }
>  
> -/*
> - * cleanup()
> - *	performs all ONE TIME cleanup for this test at
> - *	completion or premature exit
> - */
> -void cleanup(void)
> +static void cleanup(void)
>  {
> -	/*
> -	 * print timing stats if that option was specified.
> -	 * print errno log if that option was specified.
> -	 */
>  	close(fd);

It would be slightly better to close the fd only if it was opened and
with SAFE_CLOSE() i.e.

	if (fd > 0)
		SAFE_CLOSE(fd);

> -
> -	tst_rmdir();
> -
>  }
> +
> +static struct tst_test test = {
> +	.needs_tmpdir = 1,
> +	.test_all = run,
> +	.setup = setup,
> +	.cleanup = cleanup,

I suppose that it would make sense to run this test for .all_filesystems
as well.

> +};
> -- 
> 2.34.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz

-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

Re: [LTP] [PATCH 2/3] fdatasync02: Convert to new API

[Cyril Hrubis]

Hi!
It would actually make a lot of sense to use the tst_fd for the EINVAL
testcases. See readahead01.c to see how to implement that.

-- 
Cyril Hrubis
chrubis@suse.cz

-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

Re: [LTP] [PATCH 3/3] fdatasync03: add [Description] tag and cleanup code

[Cyril Hrubis]

Hi!
> +/*\
> + * [Description]
>   *
>   * It basically tests fdatasync() to sync test file data having large dirty
>   * file pages to block device. Also, it tests all supported filesystems on a
> @@ -37,10 +37,7 @@ static void verify_fdatasync(void)
>  
>  	tst_fill_fd(fd, 0, TST_MB, FILE_SIZE_MB);
>  
> -	TEST(fdatasync(fd));
> -
> -	if (TST_RET)
> -		tst_brk(TFAIL | TTERRNO, "fdatasync(fd) failed");
> +	TST_EXP_PASS_SILENT(fdatasync(fd));

There is a subtle difference the TST_EXP_PASS_SILENT() does not exit the
function as the tst_brk() does, so this should be:

	TST_EXP_PASS_SILENT(fdatasync(fd));

	if (!TST_PASS)
		return;

So that we do not continue with the test if the fdatasync() failed.

>  	written = tst_dev_bytes_written(tst_device->dev);
>  
> -- 
> 2.34.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz

-- 
Mailing list info: https://lists.linux.it/listinfo/ltp