[LTP] [PATCH v2] syscalls/copy_file_range: add/restructured tests

Christian Amann camann@suse.com
Tue Apr 23 14:51:21 CEST 2019


The following tests are run for the syscall itself,
as well as the glibc implementation.

copy_file_range01:
	restructured testcase, removed unnecessary code,
	improved readability and shortened output (only
	failures get printed now).

copy_file_range02:
	add testcases which test basic functions and error
	handling of the syscall.

copy_file_range03:
	add testcase to check if this operation updates
	timestamps accordingly.

Signed-off-by: Christian Amann <camann@suse.com>
---
 configure.ac                                       |   1 +
 m4/ltp-copy_file_range.m4                          |   7 +
 runtest/syscalls                                   |   2 +
 .../kernel/syscalls/copy_file_range/.gitignore     |   2 +
 .../syscalls/copy_file_range/copy_file_range.h     |  56 +++++
 .../syscalls/copy_file_range/copy_file_range01.c   | 232 +++++++++++----------
 .../syscalls/copy_file_range/copy_file_range02.c   | 125 +++++++++++
 .../syscalls/copy_file_range/copy_file_range03.c   |  81 +++++++
 8 files changed, 399 insertions(+), 107 deletions(-)
 create mode 100644 m4/ltp-copy_file_range.m4
 create mode 100644 testcases/kernel/syscalls/copy_file_range/copy_file_range.h
 create mode 100644 testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
 create mode 100644 testcases/kernel/syscalls/copy_file_range/copy_file_range03.c

diff --git a/configure.ac b/configure.ac
index fad8f8396..3fec68ede 100644
--- a/configure.ac
+++ b/configure.ac
@@ -197,6 +197,7 @@ LTP_CHECK_BUILTIN_CLEAR_CACHE
 LTP_CHECK_CAPABILITY_SUPPORT
 LTP_CHECK_CC_WARN_OLDSTYLE
 LTP_CHECK_CLONE_SUPPORTS_7_ARGS
+LTP_CHECK_COPY_FILE_RANGE
 LTP_CHECK_CRYPTO
 LTP_CHECK_FIDEDUPE
 LTP_CHECK_FORTIFY_SOURCE
diff --git a/m4/ltp-copy_file_range.m4 b/m4/ltp-copy_file_range.m4
new file mode 100644
index 000000000..2d87e8900
--- /dev/null
+++ b/m4/ltp-copy_file_range.m4
@@ -0,0 +1,7 @@
+dnl SPDX-License-Identifier: GPL-2.0-or-later
+dnl Copyright (c) 2019 SUSE LLC
+dnl Author: Christian Amann <camann@suse.com>
+
+AC_DEFUN([LTP_CHECK_COPY_FILE_RANGE],[
+AC_CHECK_FUNCS(copy_file_range,,)
+])
diff --git a/runtest/syscalls b/runtest/syscalls
index 2b8ca719b..33a70ee17 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1561,6 +1561,8 @@ memfd_create03 memfd_create03
 memfd_create04 memfd_create04
 
 copy_file_range01 copy_file_range01
+copy_file_range02 copy_file_range02
+copy_file_range03 copy_file_range03
 
 statx01 statx01
 statx02 statx02
diff --git a/testcases/kernel/syscalls/copy_file_range/.gitignore b/testcases/kernel/syscalls/copy_file_range/.gitignore
index 6807420ef..e9e35f60f 100644
--- a/testcases/kernel/syscalls/copy_file_range/.gitignore
+++ b/testcases/kernel/syscalls/copy_file_range/.gitignore
@@ -1 +1,3 @@
 /copy_file_range01
+/copy_file_range02
+/copy_file_range03
diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range.h b/testcases/kernel/syscalls/copy_file_range/copy_file_range.h
new file mode 100644
index 000000000..74ad08b96
--- /dev/null
+++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range.h
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 SUSE LLC
+ * Author: Christian Amann <camann@suse.com>
+ */
+
+#ifndef __COPY_FILE_RANGE_H__
+#define __COPY_FILE_RANGE_H__
+
+#include <stdbool.h>
+#include <unistd.h>
+#include "lapi/syscalls.h"
+
+#define TEST_VARIANTS	2
+
+#define MNTPOINT	"mnt_point"
+#define FILE_SRC_PATH   "file_src"
+#define FILE_DEST_PATH  "file_dest"
+#define FILE_RDONL_PATH "file_rdonl"
+#define FILE_DIR_PATH	"file_dir"
+#define FILE_MNTED_PATH	MNTPOINT"/file_mnted"
+
+#define CONTENT "ABCDEFGHIJKLMNOPQRSTUVWXYZ12345\n"
+
+static void syscall_info(void)
+{
+	switch (tst_variant) {
+	case 0:
+		tst_res(TINFO, "Testing libc copy_file_range()");
+		break;
+	case 1:
+		tst_res(TINFO, "Testing tst copy_file_range()");
+	}
+}
+
+static int sys_copy_file_range(int fd_in, loff_t *off_in,
+		int fd_out, loff_t *off_out, size_t len, unsigned int flags)
+{
+	switch (tst_variant) {
+
+	case 0:
+#ifdef HAVE_COPY_FILE_RANGE
+		return copy_file_range(fd_in, off_in,
+				fd_out, off_out, len, flags);
+#else
+		tst_brk(TCONF, "libc copy_file_range() not supported!");
+#endif
+		break;
+	case 1:
+		return tst_syscall(__NR_copy_file_range, fd_in, off_in, fd_out,
+				off_out, len, flags);
+	}
+	return -1;
+}
+
+#endif /* __COPY_FILE_RANGE_H__ */
diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
index 61a6042d9..46e4997eb 100644
--- a/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
+++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Copyright (c) Linux Test Project, 2017
+ * Copyright (c) Linux Test Project, 2019
  *
  * This program is free software;  you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -12,55 +13,28 @@
  * the GNU General Public License for more details.
  */
 
+/*
+ * This tests the fundamental functionalities of the copy_file_range
+ * syscall. It does so by copying the contents of one file into
+ * another using various different combinations for length and
+ * input/output offsets.
+ *
+ * After a copy is done this test checks if the contents of both files
+ * are equal at the given offsets. It is also inspected if the offsets
+ * of the file descriptors are advanced correctly.
+ */
+
 #define _GNU_SOURCE
+
 #include <stdio.h>
-#include <errno.h>
 #include <stdlib.h>
 #include "tst_test.h"
 #include "tst_safe_stdio.h"
-#include "lapi/syscalls.h"
-
-#define TEST_FILE_1 "copy_file_range_ltp01.txt"
-#define TEST_FILE_2 "copy_file_range_ltp02.txt"
-#define STR "abcdefghijklmnopqrstuvwxyz12345\n"
-
-#define verbose 0
-
-static size_t *len_arr;
-static loff_t **off_arr;
-static int len_sz, off_sz;
+#include "copy_file_range.h"
 
-static void setup(void)
-{
-	int i, fd, page_size;
-
-	page_size = getpagesize();
-
-	fd = SAFE_OPEN(TEST_FILE_1, O_RDWR | O_CREAT, 0664);
-	/* Writing page_size * 4 of data into test file */
-	for (i = 0; i < (int)(page_size * 4); i++)
-		SAFE_WRITE(1, fd, STR, strlen(STR));
-	SAFE_CLOSE(fd);
-
-	len_sz = 4;
-	len_arr = malloc(sizeof(size_t) * len_sz);
-	len_arr[0] = 11;
-	len_arr[1] = page_size - 1;
-	len_arr[2] = page_size;
-	len_arr[3] = page_size + 1;
-
-	off_sz = 6;
-	off_arr = malloc(sizeof(loff_t *) * off_sz);
-	for (i = 1; i < off_sz; i++)
-		off_arr[i] = malloc(sizeof(loff_t));
-
-	off_arr[0] = NULL;
-	*off_arr[1] = 0;
-	*off_arr[2] = 17;
-	*off_arr[3] = page_size - 1;
-	*off_arr[4] = page_size;
-	*off_arr[5] = page_size + 1;
-}
+static int page_size;
+static int errcount, numcopies;
+static int fd_in, fd_out;
 
 static int check_file_content(const char *fname1, const char *fname2,
 	loff_t *off1, loff_t *off2, size_t len)
@@ -90,52 +64,37 @@ static int check_file_content(const char *fname1, const char *fname2,
 }
 
 static int check_file_offset(const char *m, int fd, loff_t len,
-	loff_t *off_ori, loff_t *off_after)
+		loff_t *off_before, loff_t *off_after)
 {
+	loff_t fd_off = SAFE_LSEEK(fd, 0, SEEK_CUR);
 	int ret = 0;
 
-	if (off_ori) {
-		/* FD should stay untouched, and off_in/out is updated */
-		loff_t fd_off = SAFE_LSEEK(fd, 0, SEEK_CUR);
-
-		if (fd_off == 0) {
-			if (verbose)
-				tst_res(TPASS, "%s FD offset unchanged", m);
-		} else {
-			tst_res(TFAIL, "%s FD offset changed: %ld",
+	if (off_before) {
+		/*
+		 * copy_file_range offset is given:
+		 * - fd offset should stay 0,
+		 * - copy_file_range offset is updated
+		 */
+		if (fd_off != 0) {
+			tst_res(TFAIL,
+				"%s fd offset unexpectedly changed: %ld",
 				m, (long)fd_off);
 			ret = 1;
-		}
 
-		if (!off_after) {
-			tst_res(TFAIL, "%s offset is NULL", m);
-			ret = 1;
-		}
-
-		if ((off_after) && (*off_ori + len == *off_after)) {
-			if (verbose) {
-				tst_res(TPASS, "%s offset advanced as"
-					" expected: %ld", m, (long)*off_after);
-			}
-		} else {
+		} else if (*off_before + len != *off_after) {
 			tst_res(TFAIL, "%s offset unexpected value: %ld",
 				m, (long)*off_after);
 			ret = 1;
 		}
-	} else {
-		/* FD offset is advanced by len */
-		loff_t fd_off = SAFE_LSEEK(fd, 0, SEEK_CUR);
-
-		if (fd_off == len) {
-			if (verbose) {
-				tst_res(TPASS, "%s FD offset changed as"
-					" expected: %ld", m, (long)fd_off);
-			}
-		} else {
-			tst_res(TFAIL, "%s FD offset unexpected value: %ld",
+	}
+	/*
+	 * no copy_file_range offset given:
+	 * - fd offset advanced by length
+	 */
+	else if (fd_off != len) {
+		tst_res(TFAIL, "%s fd offset unexpected value: %ld",
 				m, (long)fd_off);
-			ret = 1;
-		}
+		ret = 1;
 	}
 
 	return ret;
@@ -143,77 +102,136 @@ static int check_file_offset(const char *m, int fd, loff_t len,
 
 static void test_one(size_t len, loff_t *off_in, loff_t *off_out)
 {
+	int ret;
 	size_t to_copy = len;
-	int fd_in, fd_out, ret;
-	loff_t *off_in_ori = off_in;
-	loff_t *off_out_ori = off_out;
-	loff_t off_in_copy;
-	loff_t off_out_copy;
+	loff_t off_in_value_copy, off_out_value_copy;
+	loff_t *off_new_in  = &off_in_value_copy;
+	loff_t *off_new_out = &off_out_value_copy;
 	char str_off_in[32], str_off_out[32];
 
 	if (off_in) {
-		off_in_copy = *off_in;
-		off_in = &off_in_copy;
+		off_in_value_copy = *off_in;
 		sprintf(str_off_in, "%ld", (long)*off_in);
 	} else {
+		off_new_in = NULL;
 		strcpy(str_off_in, "NULL");
 	}
 
 	if (off_out) {
-		off_out_copy = *off_out;
-		off_out = &off_out_copy;
+		off_out_value_copy = *off_out;
 		sprintf(str_off_out, "%ld", (long)*off_out);
 	} else {
+		off_new_out = NULL;
 		strcpy(str_off_out, "NULL");
 	}
 
-	fd_in = SAFE_OPEN(TEST_FILE_1, O_RDONLY);
-	fd_out = SAFE_OPEN(TEST_FILE_2, O_CREAT | O_WRONLY | O_TRUNC, 0644);
-
 	/*
 	 * copy_file_range() will return the number of bytes copied between
 	 * files. This could be less than the length originally requested.
 	 */
 	do {
-		TEST(tst_syscall(__NR_copy_file_range, fd_in, off_in, fd_out,
-			off_out, to_copy, 0));
+		TEST(sys_copy_file_range(fd_in, off_new_in, fd_out,
+				off_new_out, to_copy, 0));
 		if (TST_RET == -1) {
 			tst_res(TFAIL | TTERRNO, "copy_file_range() failed");
-			SAFE_CLOSE(fd_in);
-			SAFE_CLOSE(fd_out);
+			errcount++;
 			return;
 		}
 
 		to_copy -= TST_RET;
 	} while (to_copy > 0);
 
-	ret = check_file_content(TEST_FILE_1, TEST_FILE_2,
-		off_in_ori, off_out_ori, len);
-	if (ret)
+	ret = check_file_content(FILE_SRC_PATH, FILE_DEST_PATH,
+		off_in, off_out, len);
+	if (ret) {
 		tst_res(TFAIL, "file contents do not match");
+		errcount++;
+		return;
+	}
 
-	ret |= check_file_offset("(in)", fd_in, len, off_in_ori, off_in);
-	ret |= check_file_offset("(out)", fd_out, len, off_out_ori, off_out);
+	ret |= check_file_offset("(in)", fd_in, len, off_in, off_new_in);
+	ret |= check_file_offset("(out)", fd_out, len, off_out, off_new_out);
+
+	if (ret != 0) {
+		tst_res(TFAIL, "off_in: %s, off_out: %s, len: %ld",
+				str_off_in, str_off_out, (long)len);
+		errcount++;
+	}
+}
 
-	tst_res(ret == 0 ? TPASS : TFAIL, "off_in: %s, off_out: %s, len: %ld",
-			str_off_in, str_off_out, (long)len);
+static void open_files(void)
+{
+	fd_in  = SAFE_OPEN(FILE_SRC_PATH, O_RDONLY);
+	fd_out = SAFE_OPEN(FILE_DEST_PATH, O_CREAT | O_WRONLY | O_TRUNC, 0644);
+}
 
-	SAFE_CLOSE(fd_in);
-	SAFE_CLOSE(fd_out);
+static void close_files(void)
+{
+	if (fd_out > 0)
+		SAFE_CLOSE(fd_out);
+	if (fd_in  > 0)
+		SAFE_CLOSE(fd_in);
 }
 
 static void copy_file_range_verify(void)
 {
 	int i, j, k;
 
-	for (i = 0; i < len_sz; i++)
-		for (j = 0; j < off_sz; j++)
-			for (k = 0; k < off_sz; k++)
+	errcount = numcopies = 0;
+	size_t len_arr[]	= {11, page_size-1, page_size, page_size+1};
+	loff_t off_arr_values[]	= {0, 17, page_size-1, page_size, page_size+1};
+
+	int num_offsets = ARRAY_SIZE(off_arr_values) + 1;
+	loff_t *off_arr[num_offsets];
+
+	off_arr[0] = NULL;
+	for (i = 1; i < num_offsets; i++)
+		off_arr[i] = &off_arr_values[i-1];
+
+	/* Test all possible cobinations of given lengths and offsets */
+	for (i = 0; i < (int)ARRAY_SIZE(len_arr); i++)
+		for (j = 0; j < num_offsets; j++)
+			for (k = 0; k < num_offsets; k++) {
+				open_files();
 				test_one(len_arr[i], off_arr[j], off_arr[k]);
+				close_files();
+				numcopies++;
+			}
+
+	if (errcount == 0)
+		tst_res(TPASS,
+			"copy_file_range completed all %d copy jobs successfully!",
+			numcopies);
+	else
+		tst_res(TINFO, "copy_file_range failed %d of %d copy jobs.",
+				errcount, numcopies);
+}
+
+static void setup(void)
+{
+	int i, fd;
+
+	syscall_info();
+
+	page_size = getpagesize();
+
+	fd = SAFE_OPEN(FILE_SRC_PATH, O_RDWR | O_CREAT, 0664);
+	/* Writing page_size * 4 of data into test file */
+	for (i = 0; i < (int)(page_size * 4); i++)
+		SAFE_WRITE(1, fd, CONTENT, strlen(CONTENT));
+	SAFE_CLOSE(fd);
+}
+
+static void cleanup(void)
+{
+	close_files();
 }
 
 static struct tst_test test = {
 	.setup = setup,
+	.cleanup = cleanup,
 	.needs_tmpdir = 1,
+	.min_kver = "4.5",
 	.test_all = copy_file_range_verify,
+	.test_variants = TEST_VARIANTS,
 };
diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
new file mode 100644
index 000000000..e1033609d
--- /dev/null
+++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 SUSE LLC
+ * Author: Christian Amann <camann@suse.com>
+ */
+
+/*
+ * Tests basic functions and error handling of the
+ * copy_file_range syscall
+ *
+ * 1) Copy contents of one file to another without
+ *    offset or anything special -> SUCCESS
+ * 2) Copy contents with offset in source file but keep
+ *    the length the same so that it exeeds EOF
+ *    -> SUCCESS, copy bytes until EOF
+ * 3) Try to copy contents to file open as readonly
+ *    -> EBADF
+ * 4) Try to copy contents to file on different mounted
+ *    filesystem -> EXDEV
+ * 5) Try to copy contents to directory -> EISDIR
+ *
+ */
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include "tst_test.h"
+#include "copy_file_range.h"
+
+#define MNTPOINT	"mnt_point"
+#define FILE_RDONL_PATH "file_rdonl"
+#define FILE_MNTED_PATH	MNTPOINT"/file_mnted"
+
+
+static int fd_src;
+static int fd_dest;
+static int fd_rdonly;
+static int fd_dir;
+static int fd_mnted;
+
+static struct tcase {
+	loff_t	off_in;
+	loff_t	off_out;
+	size_t	length;
+	int	*copy_to_fd;
+	int	bytes_copied;
+	int	exp_err;
+} tcases[] = {
+	{0,  0, strlen(CONTENT),  &fd_dest,   strlen(CONTENT),    false},
+	{0, 10, strlen(CONTENT),  &fd_dest,   strlen(CONTENT),    false},
+	{10, 0, strlen(CONTENT),  &fd_dest,   strlen(CONTENT)-10, false},
+	{0,  0, strlen(CONTENT),  &fd_rdonly, -1, EBADF},
+	{0,  0, strlen(CONTENT),  &fd_mnted,  -1, EXDEV},
+	{0,  0, strlen(CONTENT),  &fd_dir,    -1, EISDIR},
+};
+
+static void verify_copy_file_range(unsigned int n)
+{
+	struct tcase *tc = &tcases[n];
+
+	loff_t off_in  = tc->off_in;
+	loff_t off_out = tc->off_out;
+
+	TEST(sys_copy_file_range(fd_src, &off_in,
+			    *tc->copy_to_fd, &off_out, tc->length, 0));
+	if (tc->exp_err != TST_ERR) {
+		tst_res(TFAIL,
+			"copy_file_range failed with %s, expected %s",
+			tst_strerrno(TST_ERR), tst_strerrno(tc->exp_err));
+		return;
+	}
+
+	if (tc->bytes_copied != TST_RET) {
+		tst_res(TFAIL,
+			"Wrong number of bytes copied. Expected %d, copied %ld",
+			tc->bytes_copied, TST_RET);
+		return;
+	}
+
+	tst_res(TPASS, "copy_file_range ended with %s as expected",
+			tst_strerrno(tc->exp_err));
+}
+
+static void cleanup(void)
+{
+	if (fd_dest > 0)
+		SAFE_CLOSE(fd_dest);
+	if (fd_src > 0)
+		SAFE_CLOSE(fd_src);
+	if (fd_rdonly > 0)
+		SAFE_CLOSE(fd_rdonly);
+	if (fd_mnted > 0)
+		SAFE_CLOSE(fd_mnted);
+	if (fd_dir > 0)
+		SAFE_CLOSE(fd_dir);
+}
+
+static void setup(void)
+{
+	syscall_info();
+
+	if (access(FILE_DIR_PATH, F_OK) == -1)
+		SAFE_MKDIR(FILE_DIR_PATH, 0777);
+
+	fd_dir = SAFE_OPEN(FILE_DIR_PATH, O_RDONLY | O_DIRECTORY);
+	fd_mnted = SAFE_OPEN(FILE_MNTED_PATH, O_RDWR | O_CREAT, 0664);
+	fd_rdonly = SAFE_OPEN(FILE_RDONL_PATH, O_RDONLY | O_CREAT, 0664);
+	fd_src  = SAFE_OPEN(FILE_SRC_PATH, O_RDWR | O_CREAT, 0664);
+	fd_dest = SAFE_OPEN(FILE_DEST_PATH, O_RDWR | O_CREAT, 0664);
+
+	SAFE_WRITE(1, fd_src,  CONTENT,  strlen(CONTENT));
+}
+
+static struct tst_test test = {
+	.test = verify_copy_file_range,
+	.tcnt = ARRAY_SIZE(tcases),
+	.setup = setup,
+	.cleanup = cleanup,
+	.min_kver = "4.5",
+	.needs_root = 1,
+	.mount_device = 1,
+	.mntpoint = MNTPOINT,
+	.dev_fs_type = "ext4",
+	.test_variants = TEST_VARIANTS,
+};
diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range03.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range03.c
new file mode 100644
index 000000000..68a4b2ac3
--- /dev/null
+++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range03.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 SUSE LLC
+ * Author: Christian Amann <camann@suse.com>
+ */
+
+/*
+ * Copies the contents of one file into another and
+ * checks if the timestamp gets updated in the process.
+ */
+
+#define _GNU_SOURCE
+
+#include "tst_test.h"
+#include "copy_file_range.h"
+
+static int fd_src;
+static int fd_dest;
+
+unsigned long getTimestamp(int fd)
+{
+	struct stat filestat;
+
+	fstat(fd, &filestat);
+	return filestat.st_mtime;
+}
+
+static void verify_copy_file_range_timestamp(void)
+{
+	loff_t offset;
+	unsigned long timestamp, updated_timestamp;
+
+	timestamp = getTimestamp(fd_dest);
+	usleep(1000000);
+
+	offset = 0;
+	TEST(sys_copy_file_range(fd_src, &offset,
+			fd_dest, 0, strlen(CONTENT), 0));
+	if (TST_RET == -1) {
+		tst_res(TFAIL, "copy_file_range unexpectedly failed!");
+		return;
+	}
+
+	updated_timestamp = getTimestamp(fd_dest);
+
+	if (timestamp == updated_timestamp) {
+		tst_res(TFAIL, "copy_file_range did not update timestamp!");
+		return;
+	}
+
+	tst_res(TPASS, "copy_file_range sucessfully updated the timestamp.");
+}
+
+static void cleanup(void)
+{
+	if (fd_dest > 0)
+		SAFE_CLOSE(fd_dest);
+	if (fd_src  > 0)
+		SAFE_CLOSE(fd_src);
+}
+
+static void setup(void)
+{
+	syscall_info();
+
+	fd_dest = SAFE_OPEN(FILE_DEST_PATH, O_RDWR | O_CREAT, 0664);
+	fd_src  = SAFE_OPEN(FILE_SRC_PATH,  O_RDWR | O_CREAT, 0664);
+	SAFE_WRITE(1, fd_src,  CONTENT,  strlen(CONTENT));
+	SAFE_CLOSE(fd_src);
+	fd_src = SAFE_OPEN(FILE_SRC_PATH, O_RDONLY);
+}
+
+
+static struct tst_test test = {
+	.test_all = verify_copy_file_range_timestamp,
+	.setup = setup,
+	.cleanup = cleanup,
+	.min_kver = "4.5",
+	.needs_tmpdir = 1,
+	.test_variants = TEST_VARIANTS,
+};
-- 
2.16.4



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