[PATCH v4 17/27] selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ALL.

Elizabeth Figura
2024-04-16T01:10:28Z

Test basic synchronous functionality of NTSYNC_IOC_WAIT_ALL, and when objects
are considered simultaneously signaled.

Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 99 ++++++++++++++++++-
1 file changed, 97 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 40ad8cbd3138..c0f372167557 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -73,7 +73,8 @@ static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
return ret;
}

-static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+static int wait_objs(int fd, unsigned long request, __u32 count,
+ const int *objs, __u32 owner, __u32 *index)
{
struct ntsync_wait_args args = {0};
struct timespec timeout;
@@ -86,11 +87,21 @@ static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *in
args.objs = (uintptr_t)objs;
args.owner = owner;
args.index = 0xdeadbeef;
- ret = ioctl(fd, NTSYNC_IOC_WAIT_ANY, &args);
+ ret = ioctl(fd, request, &args);
*index = args.index;
return ret;
}

+static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);
+}
+
+static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);
+}
+
TEST(semaphore_state)
{
struct ntsync_sem_args sem_args;
@@ -461,4 +472,88 @@ TEST(test_wait_any)
close(fd);
}

+TEST(test_wait_all)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 owner, index, count;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 2;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ count = 3;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 2, 3);
+ check_mutex_state(mutex_args.mutex, 3, 123);
+
+ owner = 123;
+ ret = ioctl(mutex_args.mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ /* test waiting on the same object twice */
+ objs[0] = objs[1] = sem_args.sem;
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0