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selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ALL.

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

Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-20-zfigura@codeweavers.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Elizabeth Figura
2024-12-13 13:35:00 -06:00
committed by Greg Kroah-Hartman
parent 4455456958
commit d168f68939
1 changed files with 91 additions and 2 deletions
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93
tools/testing/selftests/drivers/ntsync/ntsync.c
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@@ -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;
@@ -443,4 +454,82 @@ 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;
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_all(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], 1, 123);
ret = wait_all(fd, 2, objs, 456, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(ETIMEDOUT, errno);
check_sem_state(objs[0], 1, 3);
check_mutex_state(objs[1], 1, 123);
ret = wait_all(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], 2, 123);
ret = wait_all(fd, 2, objs, 123, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(ETIMEDOUT, errno);
check_sem_state(objs[0], 0, 3);
check_mutex_state(objs[1], 2, 123);
count = 3;
ret = release_sem(objs[0], &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(objs[0], 2, 3);
check_mutex_state(objs[1], 3, 123);
owner = 123;
ret = ioctl(objs[1], 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(objs[0], 1, 3);
check_mutex_state(objs[1], 1, 123);
close(objs[1]);
/* test waiting on the same object twice */
objs[1] = objs[0];
ret = wait_all(fd, 2, objs, 123, &index);
EXPECT_EQ(-1, ret);
EXPECT_EQ(EINVAL, errno);
close(objs[0]);
close(fd);
}
TEST_HARNESS_MAIN