Testing statx syscall Timestamp fields

The time before and after the execution of the corresponding system call is noted.

It is checked whether the time returned by statx lies in this range.

open syscall with O_CREAT flag for birth time.
write syscall for modified time.
read syscall for access time.
chmod syscall for status change time.

Signed-off-by Subash <[email protected]>

Signed-off-by Vaishnavi.D <[email protected]>

---
 include/safe_macros_fn.h                   |   4 +
 include/tst_safe_macros.h                  |   5 +
 lib/safe_macros.c                          |  23 ++++
 runtest/syscalls                           |   1 +
 testcases/kernel/syscalls/statx/.gitignore |   1 +
 testcases/kernel/syscalls/statx/statx06.c  | 168 +++++++++++++++++++++++++++++
 6 files changed, 202 insertions(+)
 create mode 100644 testcases/kernel/syscalls/statx/statx06.c

include/safe_macros_fn.h +4 -0

index 3df952811..f66c5e5a9 100644
@@ -183,5 +183,9 @@ struct dirent *safe_readdir(const char *file, const int lineno,
 int safe_closedir(const char *file, const int lineno,
                   void (cleanup_fn)(void),
                   DIR *dirp);
+void safe_clock_getres(const char *file, const int lineno,
+		       clockid_t clk_id, struct timespec *res);
 
+void safe_clock_gettime(const char *file, const int lineno,
+			clockid_t clk_id, struct timespec *tp);
 #endif /* SAFE_MACROS_FN_H__ */

include/tst_safe_macros.h +5 -0

index 413226eaf..e2d0e6419 100644
@@ -516,5 +516,10 @@ int safe_personality(const char *filename, unsigned int lineno,
 			name, value, overwrite);		\
 	}							\
 	} while (0)
+#define SAFE_CLOCK_GETRES(clk_id, res)\
+	safe_clock_getres(__FILE__, __LINE__, (clk_id), (res))
+
+#define SAFE_CLOCK_GETTIME(clk_id, tp)\
+	safe_clock_gettime(__FILE__, __LINE__, (clk_id), (tp))
 
 #endif /* SAFE_MACROS_H__ */

lib/safe_macros.c +13 -0

index bac34cdb7..b94e17270 100644
@@ -1076,3 +1076,26 @@ int safe_mincore(const char *file, const int lineno, void *start,
 
 	return rval;
 }
+
+void safe_clock_getres(const char *file, const int lineno,
+	clockid_t clk_id, struct timespec *res)
+{
+	int rval;
+
+	rval = clock_getres(clk_id, res);
+	if (rval == -1)
+		tst_brkm(TBROK | TERRNO, NULL,
+			"%s:%d:, clock_getres() failed", file, lineno);
+
+}
+

runtest/syscalls +1 -0

index 53a4a427e..1f76cd9de 100644
@@ -1514,3 +1514,4 @@ statx02 statx02
 statx03 statx03
 statx04 statx04
 statx05 statx05
+statx06 statx06

testcases/kernel/syscalls/statx/.gitignore +0 -0

index 209fc3a33..c129d99e9 100644

testcases/kernel/syscalls/statx/statx06.c new file +38 -0

new file mode 100644
index 000000000..6b11ae927
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0 or later
+/*
+ *  Copyright (c) Zilogic Systems Pvt. Ltd., 2018
+ *  Email : [email protected]
+ */
+
+/*
+ * DESCRIPTION :
+ *
+ * Test-Case 1 : Testing btime
+ * flow :       The time before and after the execution of the create
+ *              system call is noted.
+ *		It is checked whether the birth time returned by statx lies in
+ *              this range.
+ *
+ * Test-Case 2 : Testing mtime
+ * flow :       The time before and after the execution of the write
+ *              system call is noted.
+ *              It is checked whether the modification time returned
+ *              by statx lies in this range.
+ *
+ * Test-Case 3 : Testing atime
+ * flow :       The time before and after the execution of the read
+ *              system call is noted.
+ *              It is checked whether the access time returned by statx lies in
+ *              this range.
+ *
+ * Test-Case 4 : Testing ctime
+ * flow :	The time before and after the execution of the chmod
+ *              system call is noted.
+ *              It is checked whether the status change time returned by statx
+ *              lies in this range.
+ *
+ */
+
+#include <stdio.h>
+#include "tst_test.h"
+#include "lapi/stat.h"

testcases/kernel/syscalls/statx/statx06.c new file +73 -0

+	test_file_fd = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR, 0666);
+}
+
+static void write_file(void)
+{
+	char data[SIZE] = "hi";
+
+	SAFE_WRITE(0, test_file_fd, data, sizeof(data));
+}
+
+static void read_file(void)
+{
+	char data[SIZE];
+
+	SAFE_READ(0, test_file_fd, data, sizeof(data));
+}
+
+static void change_mode(void)
+{
+	SAFE_CHMOD(TEST_FILE, 0777);
+}
+
+static struct test_case {
+	void (*operation)(void);
+	char *op_name;
+} tcases[] = {
+	{.operation = create_file,
+	 .op_name = "Birth time"},
+	{.operation = write_file,
+	 .op_name = "Modified time"},
+	{.operation = read_file,
+	 .op_name = "Access time"},
+	{.operation = change_mode,
+	 .op_name = "Change time"}
+};
+
+static void test_statx(unsigned int test_nr)
+{
+	struct statx buff;
+	struct timespec before_time;
+	struct timespec after_time;
+	struct timespec statx_time = {0, 0};
+
+	struct test_case *tc = &tcases[test_nr];
+
+	SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &before_time);
+	clock_wait_tick();
+	tc->operation();
+	clock_wait_tick();
+	SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &after_time);
+
+	TEST(statx(AT_FDCWD, TEST_FILE, 0, STATX_ALL, &buff));
+	if (TST_RET != 0)
+		tst_brk(TFAIL | TTERRNO,
+			"statx(AT_FDCWD, %s, 0, STATX_ALL, &buff)",
+			TEST_FILE);
+
+	switch (test_nr) {
+	case 0:
+		statx_timestamp_to_timespec(&buff.stx_btime, &statx_time);
+		break;
+	case 1:
+		statx_timestamp_to_timespec(&buff.stx_mtime, &statx_time);
+		break;
+	case 2:
+		statx_timestamp_to_timespec(&buff.stx_atime, &statx_time);
+		break;
+	case 3:
+		statx_timestamp_to_timespec(&buff.stx_ctime, &statx_time);
+		break;
+	}
+	if (tst_timespec_lt(statx_time, before_time))
+		tst_res(TFAIL, "%s < before time", tc->op_name);