[PATCH v4 21/27] selftests: ntsync: Add some tests for auto-reset event state.

[Elizabeth Figura]

Test event-specific ioctls NTSYNC_IOC_EVENT_SET, NTSYNC_IOC_EVENT_RESET,
NTSYNC_IOC_EVENT_PULSE, NTSYNC_IOC_EVENT_READ for auto-reset events, and
waiting on auto-reset events.

Signed-off-by: Elizabeth Figura <zfig...@codeweavers.com>
---
 .../testing/selftests/drivers/ntsync/ntsync.c | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c 
b/tools/testing/selftests/drivers/ntsync/ntsync.c
index b6481c2b85cc..12ccb4ec28e4 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -442,6 +442,65 @@ TEST(manual_event_state)
        close(fd);
 }
 
+TEST(auto_event_state)
+{
+       struct ntsync_event_args event_args;
+       __u32 index, signaled;
+       int fd, event, ret;
+
+       fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+       ASSERT_LE(0, fd);
+
+       event_args.manual = 0;
+       event_args.signaled = 1;
+       event_args.event = 0xdeadbeef;
+       ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+       EXPECT_EQ(0, ret);
+       EXPECT_NE(0xdeadbeef, event_args.event);
+       event = event_args.event;
+
+       check_event_state(event, 1, 0);
+
+       signaled = 0xdeadbeef;
+       ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(1, signaled);
+       check_event_state(event, 1, 0);
+
+       ret = wait_any(fd, 1, &event, 123, &index);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(0, index);
+       check_event_state(event, 0, 0);
+
+       signaled = 0xdeadbeef;
+       ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(0, signaled);
+       check_event_state(event, 0, 0);
+
+       ret = wait_any(fd, 1, &event, 123, &index);
+       EXPECT_EQ(-1, ret);
+       EXPECT_EQ(ETIMEDOUT, errno);
+
+       ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(0, signaled);
+
+       ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(1, signaled);
+       check_event_state(event, 0, 0);
+
+       ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+       EXPECT_EQ(0, ret);
+       EXPECT_EQ(0, signaled);
+       check_event_state(event, 0, 0);
+
+       close(event);
+
+       close(fd);
+}
+
 TEST(test_wait_any)
 {
        int objs[NTSYNC_MAX_WAIT_COUNT + 1], fd, ret;
-- 
2.43.0