[LTP] [PATCH V3 01/17] syscalls/timer_gettime: Add support for time64 tests

[Viresh Kumar <viresh.kumar@linaro.org>]

This adds support for time64 tests to the existing timer_gettime()
syscall tests.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 include/tst_timer.h                           |  45 +++++++
 .../syscalls/timer_gettime/timer_gettime01.c  | 124 ++++++++----------
 2 files changed, 97 insertions(+), 72 deletions(-)

diff --git a/include/tst_timer.h b/include/tst_timer.h
index 256e1d71e1bc..e67f31201a9d 100644
--- a/include/tst_timer.h
+++ b/include/tst_timer.h
@@ -15,6 +15,7 @@
 #include <sys/time.h>
 #include <time.h>
 #include "tst_test.h"
+#include "lapi/common_timers.h"
 #include "lapi/syscalls.h"
 
 /*
@@ -112,6 +113,16 @@ struct __kernel_timespec {
 	__kernel_time64_t       tv_sec;                 /* seconds */
 	long long               tv_nsec;                /* nanoseconds */
 };
+
+struct __kernel_old_itimerspec {
+	struct __kernel_old_timespec it_interval;    /* timer period */
+	struct __kernel_old_timespec it_value;       /* timer expiration */
+};
+
+struct __kernel_itimerspec {
+	struct __kernel_timespec it_interval;    /* timer period */
+	struct __kernel_timespec it_value;       /* timer expiration */
+};
 #endif
 
 enum tst_ts_type {
@@ -129,6 +140,14 @@ struct tst_ts {
 	} ts;
 };
 
+struct tst_its {
+	enum tst_ts_type type;
+	union {
+		struct __kernel_itimerspec kern_old_its;
+		struct __kernel_itimerspec kern_its;
+	} ts;
+};
+
 static inline void *tst_ts_get(struct tst_ts *t)
 {
 	if (!t)
@@ -147,6 +166,22 @@ static inline void *tst_ts_get(struct tst_ts *t)
 	}
 }
 
+static inline void *tst_its_get(struct tst_its *t)
+{
+	if (!t)
+		return NULL;
+
+	switch (t->type) {
+	case TST_KERN_OLD_TIMESPEC:
+		return &t->ts.kern_old_its;
+	case TST_KERN_TIMESPEC:
+		return &t->ts.kern_its;
+	default:
+		tst_brk(TBROK, "Invalid type: %d", t->type);
+		return NULL;
+	}
+}
+
 static inline int libc_clock_getres(clockid_t clk_id, void *ts)
 {
 	return clock_getres(clk_id, ts);
@@ -212,6 +247,16 @@ static inline int sys_clock_nanosleep64(clockid_t clk_id, int flags,
 			   request, remain);
 }
 
+static inline int sys_timer_gettime(kernel_timer_t timerid, void *its)
+{
+	return tst_syscall(__NR_timer_gettime, timerid, its);
+}
+
+static inline int sys_timer_gettime64(kernel_timer_t timerid, void *its)
+{
+	return tst_syscall(__NR_timer_gettime64, timerid, its);
+}
+
 /*
  * Returns tst_ts seconds.
  */
diff --git a/testcases/kernel/syscalls/timer_gettime/timer_gettime01.c b/testcases/kernel/syscalls/timer_gettime/timer_gettime01.c
index 1c75f1cf0e45..af3249911f1f 100644
--- a/testcases/kernel/syscalls/timer_gettime/timer_gettime01.c
+++ b/testcases/kernel/syscalls/timer_gettime/timer_gettime01.c
@@ -1,24 +1,5 @@
-/******************************************************************************
- * Copyright (c) Crackerjack Project., 2007                                   *
- * Porting from Crackerjack to LTP is done by:                                *
- *              Manas Kumar Nayak <maknayak@in.ibm.com>                       *
- * Copyright (c) 2013 Cyril Hrubis <chrubis@suse.cz>                          *
- *                                                                            *
- * 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       *
- * the Free Software Foundation; either version 2 of the License, or          *
- * (at your option) any later version.                                        *
- *                                                                            *
- * 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, write to the Free Software Foundation,   *
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA           *
- *                                                                            *
- ******************************************************************************/
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (c) Crackerjack Project., 2007 */
 
 #include <time.h>
 #include <signal.h>
@@ -26,71 +7,70 @@
 #include <stdio.h>
 #include <errno.h>
 
-#include "test.h"
-#include "lapi/syscalls.h"
+#include "tst_timer.h"
 
-char *TCID = "timer_gettime01";
-int TST_TOTAL = 3;
+static struct test_variants {
+	int (*func)(kernel_timer_t timer, void *its);
+	enum tst_ts_type type;
+	char *desc;
+} variants[] = {
+#if (__NR_timer_gettime != __LTP__NR_INVALID_SYSCALL)
+	{ .func = sys_timer_gettime, .type = TST_KERN_OLD_TIMESPEC, .desc = "syscall with old kernel spec"},
+#endif
 
-static void cleanup(void)
-{
-	tst_rmdir();
-}
+#if (__NR_timer_gettime64 != __LTP__NR_INVALID_SYSCALL)
+	{ .func = sys_timer_gettime64, .type = TST_KERN_TIMESPEC, .desc = "syscall time64 with kernel spec"},
+#endif
+};
 
-static void setup(void)
-{
-	TEST_PAUSE;
-	tst_tmpdir();
-}
+static kernel_timer_t timer;
 
-int main(int ac, char **av)
+static void setup(void)
 {
-	int lc;
-
 	struct sigevent ev;
-	struct itimerspec spec;
-	int timer;
 
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
+	tst_res(TINFO, "Testing variant: %s", variants[tst_variant].desc);
 
 	ev.sigev_value = (union sigval) 0;
 	ev.sigev_signo = SIGALRM;
 	ev.sigev_notify = SIGEV_SIGNAL;
-	TEST(ltp_syscall(__NR_timer_create, CLOCK_REALTIME, &ev, &timer));
-
-	if (TEST_RETURN != 0)
-		tst_brkm(TBROK | TERRNO, cleanup, "Failed to create timer");
 
-	for (lc = 0; TEST_LOOPING(lc); ++lc) {
-		tst_count = 0;
+	TEST(tst_syscall(__NR_timer_create, CLOCK_REALTIME, &ev, &timer));
 
-		TEST(ltp_syscall(__NR_timer_gettime, timer, &spec));
-		if (TEST_RETURN == 0) {
-			tst_resm(TPASS, "timer_gettime(CLOCK_REALTIME) Passed");
-		} else {
-			tst_resm(TFAIL | TERRNO,
-			         "timer_gettime(CLOCK_REALTIME) Failed");
-		}
-
-		TEST(ltp_syscall(__NR_timer_gettime, -1, &spec));
-		if (TEST_RETURN == -1 && TEST_ERRNO == EINVAL) {
-			tst_resm(TPASS,	"timer_gettime(-1) Failed: EINVAL");
-		} else {
-			tst_resm(TFAIL | TERRNO,
-			         "timer_gettime(-1) = %li", TEST_RETURN);
-		}
+	if (TST_RET) {
+		tst_res(TFAIL | TTERRNO, "timer_create() failed");
+		return;
+	}
+}
 
-		TEST(ltp_syscall(__NR_timer_gettime, timer, NULL));
-		if (TEST_RETURN == -1 && TEST_ERRNO == EFAULT) {
-			tst_resm(TPASS,	"timer_gettime(NULL) Failed: EFAULT");
-		} else {
-			tst_resm(TFAIL | TERRNO,
-			         "timer_gettime(-1) = %li", TEST_RETURN);
-		}
+static void verify(void)
+{
+	struct test_variants *tv = &variants[tst_variant];
+	struct tst_its spec = {.type = tv->type, };
+
+	TEST(tv->func(timer, tst_its_get(&spec)));
+	if (TST_RET == 0) {
+		tst_res(TPASS, "timer_gettime() Passed");
+	} else {
+		tst_res(TFAIL | TTERRNO, "timer_gettime() Failed");
 	}
 
-	cleanup();
-	tst_exit();
+	TEST(tv->func((kernel_timer_t)-1, tst_its_get(&spec)));
+	if (TST_RET == -1 && TST_ERR == EINVAL)
+		tst_res(TPASS, "timer_gettime(-1) Failed: EINVAL");
+	else
+		tst_res(TFAIL | TTERRNO, "timer_gettime(-1) = %li", TST_RET);
+
+	TEST(tv->func(timer, NULL));
+	if (TST_RET == -1 && TST_ERR == EFAULT)
+		tst_res(TPASS, "timer_gettime(NULL) Failed: EFAULT");
+	else
+		tst_res(TFAIL | TTERRNO, "timer_gettime(-1) = %li", TST_RET);
 }
+
+static struct tst_test test = {
+	.test_all = verify,
+	.test_variants = ARRAY_SIZE(variants),
+	.setup = setup,
+	.needs_tmpdir = 1,
+};
-- 
2.25.0.rc1.19.g042ed3e048af