-
Notifications
You must be signed in to change notification settings - Fork 102
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
selftests: ntsync: Add some tests for semaphore state.
Wine has tests for its synchronization primitives, but these are more accessible to kernel developers, and also allow us to test some edge cases that Wine does not care about. This patch adds tests for semaphore-specific ioctls NTSYNC_IOC_SEM_POST and NTSYNC_IOC_SEM_READ, and waiting on semaphores. Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Frade <kernel@xanmod.org>
- Loading branch information
Showing
4 changed files
with
159 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,8 @@ | ||
# SPDX-LICENSE-IDENTIFIER: GPL-2.0-only | ||
TEST_GEN_PROGS := ntsync | ||
|
||
top_srcdir =../../../../.. | ||
CFLAGS += -I$(top_srcdir)/usr/include | ||
LDLIBS += -lpthread | ||
|
||
include ../../lib.mk |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1 @@ | ||
CONFIG_WINESYNC=y |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,149 @@ | ||
// SPDX-License-Identifier: GPL-2.0-or-later | ||
/* | ||
* Various unit tests for the "ntsync" synchronization primitive driver. | ||
* | ||
* Copyright (C) 2021-2022 Elizabeth Figura <zfigura@codeweavers.com> | ||
*/ | ||
|
||
#define _GNU_SOURCE | ||
#include <sys/ioctl.h> | ||
#include <sys/stat.h> | ||
#include <fcntl.h> | ||
#include <time.h> | ||
#include <pthread.h> | ||
#include <linux/ntsync.h> | ||
#include "../../kselftest_harness.h" | ||
|
||
static int read_sem_state(int sem, __u32 *count, __u32 *max) | ||
{ | ||
struct ntsync_sem_args args; | ||
int ret; | ||
|
||
memset(&args, 0xcc, sizeof(args)); | ||
ret = ioctl(sem, NTSYNC_IOC_SEM_READ, &args); | ||
*count = args.count; | ||
*max = args.max; | ||
return ret; | ||
} | ||
|
||
#define check_sem_state(sem, count, max) \ | ||
({ \ | ||
__u32 __count, __max; \ | ||
int ret = read_sem_state((sem), &__count, &__max); \ | ||
EXPECT_EQ(0, ret); \ | ||
EXPECT_EQ((count), __count); \ | ||
EXPECT_EQ((max), __max); \ | ||
}) | ||
|
||
static int post_sem(int sem, __u32 *count) | ||
{ | ||
return ioctl(sem, NTSYNC_IOC_SEM_POST, count); | ||
} | ||
|
||
static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index) | ||
{ | ||
struct ntsync_wait_args args = {0}; | ||
struct timespec timeout; | ||
int ret; | ||
|
||
clock_gettime(CLOCK_MONOTONIC, &timeout); | ||
|
||
args.timeout = timeout.tv_sec * 1000000000 + timeout.tv_nsec; | ||
args.count = count; | ||
args.objs = (uintptr_t)objs; | ||
args.owner = owner; | ||
args.index = 0xdeadbeef; | ||
ret = ioctl(fd, NTSYNC_IOC_WAIT_ANY, &args); | ||
*index = args.index; | ||
return ret; | ||
} | ||
|
||
TEST(semaphore_state) | ||
{ | ||
struct ntsync_sem_args sem_args; | ||
struct timespec timeout; | ||
__u32 count, index; | ||
int fd, ret, sem; | ||
|
||
clock_gettime(CLOCK_MONOTONIC, &timeout); | ||
|
||
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY); | ||
ASSERT_LE(0, fd); | ||
|
||
sem_args.count = 3; | ||
sem_args.max = 2; | ||
sem_args.sem = 0xdeadbeef; | ||
ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args); | ||
EXPECT_EQ(-1, ret); | ||
EXPECT_EQ(EINVAL, errno); | ||
|
||
sem_args.count = 2; | ||
sem_args.max = 2; | ||
sem_args.sem = 0xdeadbeef; | ||
ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_NE(0xdeadbeef, sem_args.sem); | ||
sem = sem_args.sem; | ||
check_sem_state(sem, 2, 2); | ||
|
||
count = 0; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_EQ(2, count); | ||
check_sem_state(sem, 2, 2); | ||
|
||
count = 1; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(-1, ret); | ||
EXPECT_EQ(EOVERFLOW, errno); | ||
check_sem_state(sem, 2, 2); | ||
|
||
ret = wait_any(fd, 1, &sem, 123, &index); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_EQ(0, index); | ||
check_sem_state(sem, 1, 2); | ||
|
||
ret = wait_any(fd, 1, &sem, 123, &index); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_EQ(0, index); | ||
check_sem_state(sem, 0, 2); | ||
|
||
ret = wait_any(fd, 1, &sem, 123, &index); | ||
EXPECT_EQ(-1, ret); | ||
EXPECT_EQ(ETIMEDOUT, errno); | ||
|
||
count = 3; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(-1, ret); | ||
EXPECT_EQ(EOVERFLOW, errno); | ||
check_sem_state(sem, 0, 2); | ||
|
||
count = 2; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_EQ(0, count); | ||
check_sem_state(sem, 2, 2); | ||
|
||
ret = wait_any(fd, 1, &sem, 123, &index); | ||
EXPECT_EQ(0, ret); | ||
ret = wait_any(fd, 1, &sem, 123, &index); | ||
EXPECT_EQ(0, ret); | ||
|
||
count = 1; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(0, ret); | ||
EXPECT_EQ(0, count); | ||
check_sem_state(sem, 1, 2); | ||
|
||
count = ~0u; | ||
ret = post_sem(sem, &count); | ||
EXPECT_EQ(-1, ret); | ||
EXPECT_EQ(EOVERFLOW, errno); | ||
check_sem_state(sem, 1, 2); | ||
|
||
close(sem); | ||
|
||
close(fd); | ||
} | ||
|
||
TEST_HARNESS_MAIN |