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selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ANY.

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Test basic synchronous functionality of NTSYNC_IOC_WAIT_ANY, when objects are
considered signaled or not signaled, and how they are affected by a successful
wait.

Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-19-zfigura@codeweavers.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Elizabeth Figura 2024-12-13 13:34:59 -06:00 committed by Greg Kroah-Hartman
parent ae071aef14
commit 4455456958
1 changed files with 114 additions and 0 deletions
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114
tools/testing/selftests/drivers/ntsync/ntsync.c
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@ -329,4 +329,118 @@ TEST(mutex_state)
close(fd);
}
TEST(test_wait_any)
{
int objs[NTSYNC_MAX_WAIT_COUNT + 1], fd, ret;
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_sem_args sem_args = {0};
__u32 owner, index, count, i;
struct timespec timeout;
clock_gettime(CLOCK_MONOTONIC, &timeout);
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
ASSERT_LE(0, fd);
sem_args.count = 2;
sem_args.max = 3;
objs[0] = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
EXPECT_LE(0, objs[0]);
mutex_args.owner = 0;
mutex_args.count = 0;
objs[1] = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
EXPECT_LE(0, objs[1]);
ret = wait_any(fd, 2, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, index);
check_sem_state(objs[0], 1, 3);
check_mutex_state(objs[1], 0, 0);
ret = wait_any(fd, 2, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, index);
check_sem_state(objs[0], 0, 3);
check_mutex_state(objs[1], 0, 0);
ret = wait_any(fd, 2, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(1, index);
check_sem_state(objs[0], 0, 3);
check_mutex_state(objs[1], 1, 123);
count = 1;
ret = release_sem(objs[0], &count);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, count);
ret = wait_any(fd, 2, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, index);
check_sem_state(objs[0], 0, 3);
check_mutex_state(objs[1], 1, 123);
ret = wait_any(fd, 2, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(1, index);
check_sem_state(objs[0], 0, 3);
check_mutex_state(objs[1], 2, 123);
ret = wait_any(fd, 2, objs, 456, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(ETIMEDOUT, errno);
owner = 123;
ret = ioctl(objs[1], NTSYNC_IOC_MUTEX_KILL, &owner);
EXPECT_EQ(0, ret);
ret = wait_any(fd, 2, objs, 456, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(EOWNERDEAD, errno);
EXPECT_EQ(1, index);
ret = wait_any(fd, 2, objs, 456, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(1, index);
close(objs[1]);
/* test waiting on the same object twice */
count = 2;
ret = release_sem(objs[0], &count);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, count);
objs[1] = objs[0];
ret = wait_any(fd, 2, objs, 456, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, index);
check_sem_state(objs[0], 1, 3);
ret = wait_any(fd, 0, NULL, 456, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(ETIMEDOUT, errno);
for (i = 1; i < NTSYNC_MAX_WAIT_COUNT + 1; ++i)
objs[i] = objs[0];
ret = wait_any(fd, NTSYNC_MAX_WAIT_COUNT, objs, 123, &index);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, index);
ret = wait_any(fd, NTSYNC_MAX_WAIT_COUNT + 1, objs, 123, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(EINVAL, errno);
ret = wait_any(fd, -1, objs, 123, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(EINVAL, errno);
close(objs[0]);
close(fd);
}
TEST_HARNESS_MAIN