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authorJan200101 <sentrycraft123@gmail.com>2021-07-21 22:57:09 +0200
committerJan200101 <sentrycraft123@gmail.com>2021-07-21 23:21:30 +0200
commitcca3b28be503223222519e3ebba2749cf24894f3 (patch)
tree9f589ac6e7dc6dd8e9830d675d46efbd25191504 /SOURCES/winesync.patch
parent969572ecac2cb15a106d9e0f5bfa840608faa5b4 (diff)
downloadkernel-fsync-cca3b28be503223222519e3ebba2749cf24894f3.tar.gz
kernel-fsync-cca3b28be503223222519e3ebba2749cf24894f3.zip
kernel 5.13.3
Diffstat (limited to 'SOURCES/winesync.patch')
-rw-r--r--SOURCES/winesync.patch3129
1 files changed, 3129 insertions, 0 deletions
diff --git a/SOURCES/winesync.patch b/SOURCES/winesync.patch
new file mode 100644
index 0000000..8747933
--- /dev/null
+++ b/SOURCES/winesync.patch
@@ -0,0 +1,3129 @@
+diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt
+index 63fd4e6a014b..dc9a30b5f1a2 100644
+--- a/Documentation/admin-guide/devices.txt
++++ b/Documentation/admin-guide/devices.txt
+@@ -376,8 +376,9 @@
+ 240 = /dev/userio Serio driver testing device
+ 241 = /dev/vhost-vsock Host kernel driver for virtio vsock
+ 242 = /dev/rfkill Turning off radio transmissions (rfkill)
++ 243 = /dev/winesync Wine synchronization primitive device
+
+- 243-254 Reserved for local use
++ 244-254 Reserved for local use
+ 255 Reserved for MISC_DYNAMIC_MINOR
+
+ 11 char Raw keyboard device (Linux/SPARC only)
+diff --git a/Documentation/userspace-api/index.rst b/Documentation/userspace-api/index.rst
+index d29b020e5622..d2ddbf9ad8cb 100644
+--- a/Documentation/userspace-api/index.rst
++++ b/Documentation/userspace-api/index.rst
+@@ -25,6 +25,7 @@ place where this information is gathered.
+ iommu
+ media/index
+ sysfs-platform_profile
++ winesync
+
+ .. only:: subproject and html
+
+diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
+index 599bd4493944..825c6b2d2623 100644
+--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
++++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
+@@ -366,6 +366,8 @@ Code Seq# Include File Comments
+ <mailto:thomas@winischhofer.net>
+ 0xF6 all LTTng Linux Trace Toolkit Next Generation
+ <mailto:mathieu.desnoyers@efficios.com>
++0xF7 00-0F uapi/linux/winesync.h Wine synchronization primitives
++ <mailto:wine-devel@winehq.org>
+ 0xFD all linux/dm-ioctl.h
+ 0xFE all linux/isst_if.h
+ ==== ===== ======================================================= ================================================================
+diff --git a/Documentation/userspace-api/winesync.rst b/Documentation/userspace-api/winesync.rst
+new file mode 100644
+index 000000000000..751c70f1ffce
+--- /dev/null
++++ b/Documentation/userspace-api/winesync.rst
+@@ -0,0 +1,373 @@
++=====================================
++Wine synchronization primitive driver
++=====================================
++
++This page documents the user-space API for the winesync driver.
++
++winesync is a support driver for emulation of NT synchronization
++primitives by the Wine project. It exists because implementation in
++user-space, using existing tools, cannot satisfy performance,
++correctness, and security constraints. It is implemented entirely in
++software, and does not drive any hardware device.
++
++This interface is meant as a compatibility tool only and should not be
++used for general synchronization; instead use generic, versatile
++interfaces such as futex(2) and poll(2).
++
++Synchronization primitives
++==========================
++
++The winesync driver exposes two types of synchronization primitives,
++semaphores and mutexes.
++
++A semaphore holds a single volatile 32-bit counter, and a static
++32-bit integer denoting the maximum value. It is considered signaled
++when the counter is nonzero. The counter is decremented by one when a
++wait is satisfied. Both the initial and maximum count are established
++when the semaphore is created.
++
++A mutex holds a volatile 32-bit recursion count, and a volatile 32-bit
++identifier denoting its owner. The latter is intended to identify the
++thread holding the mutex; however, it is not actually validated
++against earlier calls made by the same thread. A mutex is considered
++signaled when its owner is zero (indicating that it is not owned). The
++recursion count is incremented when a wait is satisfied, and ownership
++is set to the given identifier. A mutex also holds an internal flag
++denoting whether its previous owner has died; such a mutex is said to
++be inconsistent. Owner death is not tracked automatically based on
++thread death, but rather must be communicated using
++``WINESYNC_IOC_KILL_OWNER``.
++
++Objects are represented by signed 32-bit integers. A valid object
++identifier will always be nonnegative.
++
++Char device
++===========
++
++The winesync driver creates a single char device /dev/winesync. Each
++file description opened on the device represents a unique namespace.
++That is, objects created on one open file description are shared
++across all its individual descriptors, but are not shared with other
++open() calls on the same device.
++
++ioctl reference
++===============
++
++All operations on the device are done through ioctls. There are three
++structures used in ioctl calls::
++
++ struct winesync_sem_args {
++ __s32 sem;
++ __u32 count;
++ __u32 max;
++ __u32 flags;
++ };
++
++ struct winesync_mutex_args {
++ __s32 mutex;
++ __u32 owner;
++ __u32 count;
++ };
++
++ struct winesync_wait_args {
++ __u64 timeout;
++ __u64 objs;
++ __u32 count;
++ __u32 owner;
++ __u32 index;
++ __u32 pad;
++ };
++
++Depending on the ioctl, members of the structure may be used as input,
++output, or not at all.
++
++All ioctls return 0 on success, and -1 on error, in which case `errno`
++will be set to a nonzero error code.
++
++The ioctls are as follows:
++
++.. c:macro:: WINESYNC_IOC_CREATE_SEM
++
++ Create a semaphore object. Takes a pointer to struct
++ :c:type:`winesync_sem_args`, which is used as follows:
++
++ ``count`` and ``max`` are input-only arguments, denoting the
++ initial and maximum count of the semaphore.
++
++ ``flags`` is an input-only argument, which specifies additional
++ flags modifying the behaviour of the semaphore. There is only one
++ flag defined, ``WINESYNC_SEM_GETONWAIT``. If present, wait
++ operations on this semaphore will acquire it, decrementing its
++ count by one; otherwise, wait operations will not affect the
++ semaphore's state.
++
++ ``sem`` is an output-only argument, which will be filled with the
++ allocated identifier if successful.
++
++ Fails with ``EINVAL`` if ``count`` is greater than ``max``, or
++ ``ENOMEM`` if not enough memory is available.
++
++.. c:macro:: WINESYNC_IOC_CREATE_MUTEX
++
++ Create a mutex object. Takes a pointer to struct
++ :c:type:`winesync_mutex_args`, which is used as follows:
++
++ ``owner`` is an input-only argument denoting the initial owner of
++ the mutex.
++
++ ``count`` is an input-only argument denoting the initial recursion
++ count of the mutex. If ``owner`` is nonzero and ``count`` is zero,
++ or if ``owner`` is zero and ``count`` is nonzero, the function
++ fails with ``EINVAL``.
++
++ ``mutex`` is an output-only argument, which will be filled with
++ the allocated identifier if successful.
++
++ Fails with ``ENOMEM`` if not enough memory is available.
++
++.. c:macro:: WINESYNC_IOC_DELETE
++
++ Delete an object of any type. Takes an input-only pointer to a
++ 32-bit integer denoting the object to delete. Fails with ``EINVAL``
++ if the object is not valid. Further ioctls attempting to use the
++ object return ``EINVAL``, unless the object identifier is reused.
++ However, wait ioctls currently in progress are not interrupted, and
++ behave as if the object remains valid.
++
++.. c:macro:: WINESYNC_IOC_PUT_SEM
++
++ Post to a semaphore object. Takes a pointer to struct
++ :c:type:`winesync_sem_args`, which is used as follows:
++
++ ``sem`` is an input-only argument denoting the semaphore object.
++ If ``sem`` is not a valid semaphore object, the ioctl fails with
++ ``EINVAL``.
++
++ ``count`` contains on input the count to add to the semaphore, and
++ on output is filled with its previous count.
++
++ ``max`` and ``flags`` are not used.
++
++ The operation is atomic and totally ordered with respect to other
++ operations on the same semaphore. If adding ``count`` to the
++ semaphore's current count would raise the latter past the
++ semaphore's maximum count, the ioctl fails with ``EOVERFLOW`` and
++ the semaphore is not affected. If raising the semaphore's count
++ causes it to become signaled, eligible threads waiting on this
++ semaphore will be woken and the semaphore's count decremented
++ appropriately.
++
++.. c:macro:: WINESYNC_IOC_PULSE_SEM
++
++ This operation is identical to ``WINESYNC_IOC_PUT_SEM``, with one
++ notable exception: the semaphore is always left in an *unsignaled*
++ state, regardless of the initial count or the count added by the
++ ioctl. That is, the count after a pulse operation will always be
++ zero. The entire operation is atomic.
++
++ Hence, if the semaphore was created with the
++ ``WINESYNC_SEM_GETONWAIT`` flag set, and an unsignaled semaphore is
++ "pulsed" with a count of 2, at most two eligible threads (i.e.
++ threads not otherwise constrained due to ``WINESYNC_IOC_WAIT_ALL``)
++ will be woken up, and any others will remain sleeping. If less than
++ two eligible threads are waiting on the semaphore, all of them will
++ be woken up, and the semaphore's count will remain at zero. On the
++ other hand, if the semaphore was created without the
++ ``WINESYNC_SEM_GETONWAIT``, all eligible threads will be woken up,
++ making ``count`` effectively redundant. In either case, a
++ simultaneous ``WINESYNC_IOC_READ_SEM`` ioctl from another thread
++ will always report a count of zero.
++
++ If adding ``count`` to the semaphore's current count would raise the
++ latter past the semaphore's maximum count, the ioctl fails with
++ ``EOVERFLOW``. However, in this case the semaphore's count will
++ still be reset to zero.
++
++.. c:macro:: WINESYNC_IOC_GET_SEM
++
++ Attempt to acquire a semaphore object. Takes an input-only pointer
++ to a 32-bit integer denoting the semaphore to acquire.
++
++ This operation does not block. If the semaphore's count was zero, it
++ fails with ``EWOULDBLOCK``. Otherwise, the semaphore's count is
++ decremented by one. The behaviour of this operation is unaffected by
++ whether the semaphore was created with the
++ ``WINESYNC_SEM_GETONWAIT`` flag set.
++
++ The operation is atomic and totally ordered with respect to other
++ operations on the same semaphore.
++
++.. c:macro:: WINESYNC_IOC_PUT_MUTEX
++
++ Release a mutex object. Takes a pointer to struct
++ :c:type:`winesync_mutex_args`, which is used as follows:
++
++ ``mutex`` is an input-only argument denoting the mutex object. If
++ ``mutex`` is not a valid mutex object, the ioctl fails with
++ ``EINVAL``.
++
++ ``owner`` is an input-only argument denoting the mutex owner.
++ ``owner`` must be nonzero, else the ioctl fails with ``EINVAL``.
++ If ``owner`` is not the current owner of the mutex, the ioctl
++ fails with ``EPERM``.
++
++ ``count`` is an output-only argument which will be filled on
++ success with the mutex's previous recursion count.
++
++ The mutex's count will be decremented by one. The operation is
++ atomic and totally ordered with respect to other operations on the
++ same mutex. If decrementing the mutex's count causes it to become
++ zero, the mutex is marked as unowned and signaled, and eligible
++ threads waiting on it will be woken as appropriate.
++
++.. c:macro:: WINESYNC_IOC_READ_SEM
++
++ Read the current state of a semaphore object. Takes a pointer to
++ struct :c:type:`winesync_sem_args`, which is used as follows:
++
++ ``sem`` is an input-only argument denoting the semaphore object.
++ If ``sem`` is not a valid semaphore object, the ioctl fails with
++ ``EINVAL``.
++
++ ``count`` and ``max`` are output-only arguments, which will be
++ filled with the current and maximum count of the given semaphore.
++
++ ``flags`` is an output-only argument, which will be filled with
++ the flags used to create the semaphore.
++
++ The operation is atomic and totally ordered with respect to other
++ operations on the same semaphore.
++
++.. c:macro:: WINESYNC_IOC_READ_MUTEX
++
++ Read the current state of a mutex object. Takes a pointer to struct
++ :c:type:`winesync_mutex_args`, which is used as follows:
++
++ ``mutex`` is an input-only argument denoting the mutex object. If
++ ``mutex`` is not a valid mutex object, the ioctl fails with
++ ``EINVAL``.
++
++ ``count`` and ``owner`` are output-only arguments, which will be
++ filled with the current recursion count and owner of the given
++ mutex. If the mutex is not owned, both ``count`` and ``owner`` are
++ set to zero.
++
++ If the mutex is marked as inconsistent, the function fails with
++ ``EOWNERDEAD``.
++
++ The operation is atomic and totally ordered with respect to other
++ operations on the same mutex.
++
++.. c:macro:: WINESYNC_IOC_KILL_OWNER
++
++ Mark any mutexes owned by the given identifier as unowned and
++ inconsistent. Takes an input-only pointer to a 32-bit integer
++ denoting the owner. If the owner is zero, the ioctl fails with
++ ``EINVAL``.
++
++.. c:macro:: WINESYNC_IOC_WAIT_ANY
++
++ Poll on any of a list of objects, atomically acquiring (at most)
++ one. Takes a pointer to struct :c:type:`winesync_wait_args`, which
++ is used as follows:
++
++ ``timeout`` is an optional input-only pointer to a 64-bit struct
++ :c:type:`timespec` (specified as an integer so that the structure
++ has the same size regardless of architecture). The timeout is
++ specified in absolute format, as measured against the MONOTONIC
++ clock. If the timeout is equal to or earlier than the current
++ time, the function returns immediately without sleeping. If
++ ``timeout`` is zero, i.e. NULL, the function will sleep until an
++ object is signaled, and will not fail with ``ETIMEDOUT``.
++
++ ``objs`` is a input-only pointer to an array of ``count`` 32-bit
++ object identifiers (specified as an integer so that the structure
++ has the same size regardless of architecture). If any identifier
++ is invalid, the function fails with ``EINVAL``.
++
++ ``count`` is an input-only argument denoting the number of
++ elements in ``objs``.
++
++ ``owner`` is an input-only argument denoting the mutex owner
++ identifier. If any object in ``objs`` is a mutex, the ioctl will
++ attempt to acquire that mutex on behalf of ``owner``. If ``owner``
++ is zero, the ioctl fails with ``EINVAL``.
++
++ ``index`` is an output-only argument which, if the ioctl is
++ successful, is filled with the index of the object actually
++ signaled.
++
++ ``pad`` is unused, and exists to keep a consistent structure size.
++
++ This function attempts to acquire one of the given objects. If
++ unable to do so, it sleeps until an object becomes signaled,
++ subsequently acquiring it, or the timeout expires. In the latter
++ case the ioctl fails with ``ETIMEDOUT``. The function only acquires
++ one object, even if multiple objects are signaled.
++
++ A semaphore is considered to be signaled if its count is nonzero. It
++ is acquired by decrementing its count by one if the
++ ``WINESYNC_SEM_GETONWAIT`` flag was used to create it; otherwise no
++ operation is done to acquire the semaphore. A mutex is considered to
++ be signaled if it is unowned or if its owner matches the ``owner``
++ argument, and is acquired by incrementing its recursion count by one
++ and setting its owner to the ``owner`` argument.
++
++ Acquisition is atomic and totally ordered with respect to other
++ operations on the same object. If two wait operations (with
++ different ``owner`` identifiers) are queued on the same mutex, only
++ one is signaled. If two wait operations are queued on the same
++ semaphore (which was not created with the ``WINESYNC_SEM_GETONWAIT``
++ flag set), and a value of one is posted to it, only one is signaled.
++ The order in which threads are signaled is not guaranteed.
++
++ (If two wait operations are queued on the same semaphore, and the
++ semaphore was created with the ``WINESYNC_SEM_GETONWAIT`` flag set,
++ and a value of one is posted to it, both threads are signaled, and
++ the semaphore retains a count of one.)
++
++ If an inconsistent mutex is acquired, the ioctl fails with
++ ``EOWNERDEAD``. Although this is a failure return, the function may
++ otherwise be considered successful. The mutex is marked as owned by
++ the given owner (with a recursion count of 1) and as no longer
++ inconsistent. ``index`` is still set to the index of the mutex.
++
++ Unlike ``WINESYNC_IOC_WAIT_ALL``, it is valid to pass the same
++ object more than once. If a wakeup occurs due to that object being
++ signaled, ``index`` is set to the index of the first instance of the
++ object.
++
++ Fails with ``ENOMEM`` if not enough memory is available, or
++ ``EINTR`` if a signal is received.
++
++.. c:macro:: WINESYNC_IOC_WAIT_ALL
++
++ Poll on a list of objects, atomically acquiring all of them. Takes a
++ pointer to struct :c:type:`winesync_wait_args`, which is used
++ identically to ``WINESYNC_IOC_WAIT_ANY``, except that ``index`` is
++ unused.
++
++ This function attempts to simultaneously acquire all of the given
++ objects. If unable to do so, it sleeps until all objects become
++ simultaneously signaled, subsequently acquiring them, or the timeout
++ expires. In the latter case the ioctl fails with ``ETIMEDOUT`` and
++ no objects are modified.
++
++ Objects may become signaled and subsequently designaled (through
++ acquisition by other threads) while this thread is sleeping. Only
++ once all objects are simultaneously signaled does the ioctl return.
++ The acquisition is atomic and totally ordered with respect to other
++ operations on any of the given objects.
++
++ If an inconsistent mutex is acquired, the ioctl fails with
++ ``EOWNERDEAD``. Similarly to ``WINESYNC_IOC_WAIT_ANY``, all objects
++ are nevertheless marked as acquired. Note that if multiple mutex
++ objects are specified, there is no way to know which were marked as
++ inconsistent.
++
++ Unlike ``WINESYNC_IOC_WAIT_ALL``, it is not valid to pass the same
++ object more than once. If this is attempted, the function fails with
++ ``EINVAL``.
++
++ Fails with ``ENOMEM`` if not enough memory is available, or
++ ``EINTR`` if a signal is received.
+diff --git a/MAINTAINERS b/MAINTAINERS
+index 9450e052f1b1..d33e317759bf 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -19351,6 +19351,15 @@ M: David Härdeman <david@hardeman.nu>
+ S: Maintained
+ F: drivers/media/rc/winbond-cir.c
+
++WINESYNC SYNCHRONIZATION PRIMITIVE DRIVER
++M: Zebediah Figura <zfigura@codeweavers.com>
++L: wine-devel@winehq.org
++S: Supported
++F: Documentation/userspace-api/winesync.rst
++F: drivers/misc/winesync.c
++F: include/uapi/linux/winesync.c
++F: tools/testing/selftests/drivers/winesync/
++
+ WINSYSTEMS EBC-C384 WATCHDOG DRIVER
+ M: William Breathitt Gray <vilhelm.gray@gmail.com>
+ L: linux-watchdog@vger.kernel.org
+diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
+index f532c59bb59b..496f20d69914 100644
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -447,6 +447,18 @@
+ switching between the dual-role USB-C port and the USB-A host ports
+ using only one USB controller.
+
++config WINESYNC
++ default y
++ tristate "Synchronization primitives for Wine"
++ help
++ This module provides kernel support for synchronization primitives
++ used by Wine. It is not a hardware driver.
++
++ To compile this driver as a module, choose M here: the
++ module will be called winesync.
++
++ If unsure, say N.
++
+ source "drivers/misc/c2port/Kconfig"
+ source "drivers/misc/eeprom/Kconfig"
+ source "drivers/misc/cb710/Kconfig"
+
+diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
+index 99b6f15a3c70..327c9628c479 100644
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -56,3 +56,4 @@ obj-$(CONFIG_HABANA_AI) += habanalabs/
+ obj-$(CONFIG_UACCE) += uacce/
+ obj-$(CONFIG_XILINX_SDFEC) += xilinx_sdfec.o
+ obj-$(CONFIG_HISI_HIKEY_USB) += hisi_hikey_usb.o
++obj-$(CONFIG_WINESYNC) += winesync.o
+diff --git a/drivers/misc/winesync.c b/drivers/misc/winesync.c
+new file mode 100644
+index 000000000000..ff5749206aa9
+--- /dev/null
++++ b/drivers/misc/winesync.c
+@@ -0,0 +1,1047 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * winesync.c - Kernel driver for Wine synchronization primitives
++ *
++ * Copyright (C) 2021 Zebediah Figura
++ */
++
++#include <linux/fs.h>
++#include <linux/idr.h>
++#include <linux/miscdevice.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/slab.h>
++#include <uapi/linux/winesync.h>
++
++#define WINESYNC_NAME "winesync"
++
++enum winesync_type {
++ WINESYNC_TYPE_SEM,
++ WINESYNC_TYPE_MUTEX,
++};
++
++struct winesync_obj {
++ struct kref refcount;
++ spinlock_t lock;
++
++ /*
++ * any_waiters is protected by the object lock, but all_waiters is
++ * protected by the device wait_all_lock.
++ */
++ struct list_head any_waiters;
++ struct list_head all_waiters;
++
++ /*
++ * Hint describing how many tasks are queued on this object in a
++ * wait-all operation.
++ *
++ * Any time we do a wake, we may need to wake "all" waiters as well as
++ * "any" waiters. In order to atomically wake "all" waiters, we must
++ * lock all of the objects, and that means grabbing the wait_all_lock
++ * below (and, due to lock ordering rules, before locking this object).
++ * However, wait-all is a rare operation, and grabbing the wait-all
++ * lock for every wake would create unnecessary contention. Therefore we
++ * first check whether all_hint is one, and, if it is, we skip trying
++ * to wake "all" waiters.
++ *
++ * This "refcount" isn't protected by any lock. It might change during
++ * the course of a wake, but there's no meaningful race there; it's only
++ * a hint.
++ *
++ * Use refcount_t rather than atomic_t to take advantage of saturation.
++ * This does mean that the "no waiters" case is signified by all_hint
++ * being one, rather than zero (otherwise we would get spurious
++ * warnings).
++ */
++ refcount_t all_hint;
++
++ enum winesync_type type;
++
++ /* The following fields are protected by the object lock. */
++ union {
++ struct {
++ __u32 count;
++ __u32 max;
++ __u32 flags;
++ } sem;
++ struct {
++ __u32 count;
++ __u32 owner;
++ bool ownerdead;
++ } mutex;
++ } u;
++};
++
++struct winesync_q_entry {
++ struct list_head node;
++ struct winesync_q *q;
++ struct winesync_obj *obj;
++ __u32 index;
++};
++
++struct winesync_q {
++ struct task_struct *task;
++ __u32 owner;
++
++ /*
++ * Protected via atomic_cmpxchg(). Only the thread that wins the
++ * compare-and-swap may actually change object states and wake this
++ * task.
++ */
++ atomic_t signaled;
++
++ bool all;
++ bool ownerdead;
++ __u32 count;
++ struct winesync_q_entry entries[];
++};
++
++struct winesync_device {
++ /*
++ * Wait-all operations must atomically grab all objects, and be totally
++ * ordered with respect to each other and wait-any operations. If one
++ * thread is trying to acquire several objects, another thread cannot
++ * touch the object at the same time.
++ *
++ * We achieve this by grabbing multiple object locks at the same time.
++ * However, this creates a lock ordering problem. To solve that problem,
++ * wait_all_lock is taken first whenever multiple objects must be locked
++ * at the same time.
++ */
++ spinlock_t wait_all_lock;
++ struct mutex table_lock;
++ struct idr objects;
++};
++
++static struct winesync_obj *get_obj(struct winesync_device *dev, int id)
++{
++ struct winesync_obj *obj;
++
++ rcu_read_lock();
++ obj = idr_find(&dev->objects, id);
++ if (obj && !kref_get_unless_zero(&obj->refcount))
++ obj = NULL;
++ rcu_read_unlock();
++
++ return obj;
++}
++
++static void destroy_obj(struct kref *ref)
++{
++ struct winesync_obj *obj;
++
++ obj = container_of(ref, struct winesync_obj, refcount);
++ kfree(obj);
++}
++
++static void put_obj(struct winesync_obj *obj)
++{
++ kref_put(&obj->refcount, destroy_obj);
++}
++
++static int winesync_char_open(struct inode *inode, struct file *file)
++{
++ struct winesync_device *dev;
++
++ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
++ if (!dev)
++ return -ENOMEM;
++
++ idr_init(&dev->objects);
++ spin_lock_init(&dev->wait_all_lock);
++ mutex_init(&dev->table_lock);
++
++ file->private_data = dev;
++ return nonseekable_open(inode, file);
++}
++
++static int winesync_char_release(struct inode *inode, struct file *file)
++{
++ struct winesync_device *dev = file->private_data;
++ struct winesync_obj *obj;
++ int id;
++
++ mutex_lock(&dev->table_lock);
++ idr_for_each_entry(&dev->objects, obj, id) {
++ idr_remove(&dev->objects, id);
++ synchronize_rcu();
++ put_obj(obj);
++ }
++ mutex_unlock(&dev->table_lock);
++
++ kfree(dev);
++
++ return 0;
++}
++
++static void winesync_init_obj(struct winesync_obj *obj)
++{
++ kref_init(&obj->refcount);
++ refcount_set(&obj->all_hint, 1);
++ spin_lock_init(&obj->lock);
++ INIT_LIST_HEAD(&obj->any_waiters);
++ INIT_LIST_HEAD(&obj->all_waiters);
++}
++
++static bool is_signaled(struct winesync_obj *obj, __u32 owner)
++{
++ lockdep_assert_held(&obj->lock);
++
++ switch (obj->type) {
++ case WINESYNC_TYPE_SEM:
++ return !!obj->u.sem.count;
++ case WINESYNC_TYPE_MUTEX:
++ if (obj->u.mutex.owner && obj->u.mutex.owner != owner)
++ return false;
++ return obj->u.mutex.count < UINT_MAX;
++ }
++
++ WARN(1, "bad object type %#x\n", obj->type);
++ return false;
++}
++
++/*
++ * "locked_obj" is an optional pointer to an object which is already locked and
++ * should not be locked again. This is necessary so that changing an object's
++ * state and waking it can be a single atomic operation.
++ */
++static void try_wake_all(struct winesync_device *dev, struct winesync_q *q,
++ struct winesync_obj *locked_obj)
++{
++ __u32 count = q->count;
++ bool can_wake = true;
++ __u32 i;
++
++ lockdep_assert_held(&dev->wait_all_lock);
++ if (locked_obj)
++ lockdep_assert_held(&locked_obj->lock);
++
++ for (i = 0; i < count; i++) {
++ if (q->entries[i].obj != locked_obj)
++ spin_lock(&q->entries[i].obj->lock);
++ }
++
++ for (i = 0; i < count; i++) {
++ if (!is_signaled(q->entries[i].obj, q->owner)) {
++ can_wake = false;
++ break;
++ }
++ }
++
++ if (can_wake && atomic_cmpxchg(&q->signaled, -1, 0) == -1) {
++ for (i = 0; i < count; i++) {
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ switch (obj->type) {
++ case WINESYNC_TYPE_SEM:
++ if (obj->u.sem.flags & WINESYNC_SEM_GETONWAIT)
++ obj->u.sem.count--;
++ break;
++ case WINESYNC_TYPE_MUTEX:
++ if (obj->u.mutex.ownerdead)
++ q->ownerdead = true;
++ obj->u.mutex.ownerdead = false;
++ obj->u.mutex.count++;
++ obj->u.mutex.owner = q->owner;
++ break;
++ }
++ }
++ wake_up_process(q->task);
++ }
++
++ for (i = 0; i < count; i++) {
++ if (q->entries[i].obj != locked_obj)
++ spin_unlock(&q->entries[i].obj->lock);
++ }
++}
++
++static void try_wake_all_obj(struct winesync_device *dev,
++ struct winesync_obj *obj)
++{
++ struct winesync_q_entry *entry;
++
++ lockdep_assert_held(&dev->wait_all_lock);
++ lockdep_assert_held(&obj->lock);
++
++ list_for_each_entry(entry, &obj->all_waiters, node)
++ try_wake_all(dev, entry->q, obj);
++}
++
++static void try_wake_any_sem(struct winesync_obj *sem)
++{
++ struct winesync_q_entry *entry;
++
++ lockdep_assert_held(&sem->lock);
++
++ list_for_each_entry(entry, &sem->any_waiters, node) {
++ struct winesync_q *q = entry->q;
++
++ if (!sem->u.sem.count)
++ break;
++
++ if (atomic_cmpxchg(&q->signaled, -1, entry->index) == -1) {
++ if (sem->u.sem.flags & WINESYNC_SEM_GETONWAIT)
++ sem->u.sem.count--;
++ wake_up_process(q->task);
++ }
++ }
++}
++
++static void try_wake_any_mutex(struct winesync_obj *mutex)
++{
++ struct winesync_q_entry *entry;
++
++ lockdep_assert_held(&mutex->lock);
++
++ list_for_each_entry(entry, &mutex->any_waiters, node) {
++ struct winesync_q *q = entry->q;
++
++ if (mutex->u.mutex.count == UINT_MAX)
++ break;
++ if (mutex->u.mutex.owner && mutex->u.mutex.owner != q->owner)
++ continue;
++
++ if (atomic_cmpxchg(&q->signaled, -1, entry->index) == -1) {
++ if (mutex->u.mutex.ownerdead)
++ q->ownerdead = true;
++ mutex->u.mutex.ownerdead = false;
++ mutex->u.mutex.count++;
++ mutex->u.mutex.owner = q->owner;
++ wake_up_process(q->task);
++ }
++ }
++}
++
++static int winesync_create_sem(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_sem_args __user *user_args = argp;
++ struct winesync_sem_args args;
++ struct winesync_obj *sem;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++
++ if (args.count > args.max)
++ return -EINVAL;
++
++ if (args.flags & ~WINESYNC_SEM_GETONWAIT)
++ return -EINVAL;
++
++ sem = kzalloc(sizeof(*sem), GFP_KERNEL);
++ if (!sem)
++ return -ENOMEM;
++
++ winesync_init_obj(sem);
++ sem->type = WINESYNC_TYPE_SEM;
++ sem->u.sem.count = args.count;
++ sem->u.sem.max = args.max;
++ sem->u.sem.flags = args.flags;
++
++ mutex_lock(&dev->table_lock);
++ ret = idr_alloc(&dev->objects, sem, 0, 0, GFP_KERNEL);
++ mutex_unlock(&dev->table_lock);
++
++ if (ret < 0) {
++ kfree(sem);
++ return ret;
++ }
++
++ return put_user(ret, &user_args->sem);
++}
++
++static int winesync_create_mutex(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_mutex_args __user *user_args = argp;
++ struct winesync_mutex_args args;
++ struct winesync_obj *mutex;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++
++ if (!args.owner != !args.count)
++ return -EINVAL;
++
++ mutex = kzalloc(sizeof(*mutex), GFP_KERNEL);
++ if (!mutex)
++ return -ENOMEM;
++
++ winesync_init_obj(mutex);
++ mutex->type = WINESYNC_TYPE_MUTEX;
++ mutex->u.mutex.count = args.count;
++ mutex->u.mutex.owner = args.owner;
++
++ mutex_lock(&dev->table_lock);
++ ret = idr_alloc(&dev->objects, mutex, 0, 0, GFP_KERNEL);
++ mutex_unlock(&dev->table_lock);
++
++ if (ret < 0) {
++ kfree(mutex);
++ return ret;
++ }
++
++ return put_user(ret, &user_args->mutex);
++}
++
++static int winesync_delete(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_obj *obj;
++ __s32 id;
++
++ if (get_user(id, (__s32 __user *)argp))
++ return -EFAULT;
++
++ mutex_lock(&dev->table_lock);
++ obj = idr_remove(&dev->objects, id);
++ mutex_unlock(&dev->table_lock);
++
++ if (!obj)
++ return -EINVAL;
++
++ put_obj(obj);
++ return 0;
++}
++
++static int winesync_get_sem(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_obj *sem;
++ int ret = -EWOULDBLOCK;
++ __s32 id;
++
++ if (get_user(id, (__s32 __user *)argp))
++ return -EFAULT;
++
++ sem = get_obj(dev, id);
++ if (!sem)
++ return -EINVAL;
++ if (sem->type != WINESYNC_TYPE_SEM) {
++ put_obj(sem);
++ return -EINVAL;
++ }
++
++ spin_lock(&sem->lock);
++
++ if (sem->u.sem.count) {
++ /*
++ * Decrement the semaphore's count, regardless of whether it
++ * has the WINESYNC_SEM_GETONWAIT flag set.
++ */
++ sem->u.sem.count--;
++ ret = 0;
++ }
++
++ spin_unlock(&sem->lock);
++
++ put_obj(sem);
++
++ return ret;
++}
++
++/*
++ * Actually change the semaphore state, returning -EOVERFLOW if it is made
++ * invalid.
++ */
++static int put_sem_state(struct winesync_obj *sem, __u32 count)
++{
++ lockdep_assert_held(&sem->lock);
++
++ if (sem->u.sem.count + count < sem->u.sem.count ||
++ sem->u.sem.count + count > sem->u.sem.max)
++ return -EOVERFLOW;
++
++ sem->u.sem.count += count;
++ return 0;
++}
++
++static int winesync_put_sem(struct winesync_device *dev, void __user *argp,
++ bool pulse)
++{
++ struct winesync_sem_args __user *user_args = argp;
++ struct winesync_sem_args args;
++ struct winesync_obj *sem;
++ __u32 prev_count;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++
++ sem = get_obj(dev, args.sem);
++ if (!sem)
++ return -EINVAL;
++ if (sem->type != WINESYNC_TYPE_SEM) {
++ put_obj(sem);
++ return -EINVAL;
++ }
++
++ if (refcount_read(&sem->all_hint) > 1) {
++ spin_lock(&dev->wait_all_lock);
++ spin_lock(&sem->lock);
++
++ prev_count = sem->u.sem.count;
++ ret = put_sem_state(sem, args.count);
++ if (!ret) {
++ try_wake_all_obj(dev, sem);
++ try_wake_any_sem(sem);
++ }
++
++ if (pulse)
++ sem->u.sem.count = 0;
++
++ spin_unlock(&sem->lock);
++ spin_unlock(&dev->wait_all_lock);
++ } else {
++ spin_lock(&sem->lock);
++
++ prev_count = sem->u.sem.count;
++ ret = put_sem_state(sem, args.count);
++ if (!ret)
++ try_wake_any_sem(sem);
++
++ if (pulse)
++ sem->u.sem.count = 0;
++
++ spin_unlock(&sem->lock);
++ }
++
++ put_obj(sem);
++
++ if (!ret && put_user(prev_count, &user_args->count))
++ ret = -EFAULT;
++
++ return ret;
++}
++
++/*
++ * Actually change the mutex state, returning -EPERM if not the owner.
++ */
++static int put_mutex_state(struct winesync_obj *mutex,
++ const struct winesync_mutex_args *args)
++{
++ lockdep_assert_held(&mutex->lock);
++
++ if (mutex->u.mutex.owner != args->owner)
++ return -EPERM;
++
++ if (!--mutex->u.mutex.count)
++ mutex->u.mutex.owner = 0;
++ return 0;
++}
++
++static int winesync_put_mutex(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_mutex_args __user *user_args = argp;
++ struct winesync_mutex_args args;
++ struct winesync_obj *mutex;
++ __u32 prev_count;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++ if (!args.owner)
++ return -EINVAL;
++
++ mutex = get_obj(dev, args.mutex);
++ if (!mutex)
++ return -EINVAL;
++ if (mutex->type != WINESYNC_TYPE_MUTEX) {
++ put_obj(mutex);
++ return -EINVAL;
++ }
++
++ if (refcount_read(&mutex->all_hint) > 1) {
++ spin_lock(&dev->wait_all_lock);
++ spin_lock(&mutex->lock);
++
++ prev_count = mutex->u.mutex.count;
++ ret = put_mutex_state(mutex, &args);
++ if (!ret) {
++ try_wake_all_obj(dev, mutex);
++ try_wake_any_mutex(mutex);
++ }
++
++ spin_unlock(&mutex->lock);
++ spin_unlock(&dev->wait_all_lock);
++ } else {
++ spin_lock(&mutex->lock);
++
++ prev_count = mutex->u.mutex.count;
++ ret = put_mutex_state(mutex, &args);
++ if (!ret)
++ try_wake_any_mutex(mutex);
++
++ spin_unlock(&mutex->lock);
++ }
++
++ put_obj(mutex);
++
++ if (!ret && put_user(prev_count, &user_args->count))
++ ret = -EFAULT;
++
++ return ret;
++}
++
++static int winesync_read_sem(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_sem_args __user *user_args = argp;
++ struct winesync_sem_args args;
++ struct winesync_obj *sem;
++ __s32 id;
++
++ if (get_user(id, &user_args->sem))
++ return -EFAULT;
++
++ sem = get_obj(dev, id);
++ if (!sem)
++ return -EINVAL;
++ if (sem->type != WINESYNC_TYPE_SEM) {
++ put_obj(sem);
++ return -EINVAL;
++ }
++
++ args.sem = id;
++ spin_lock(&sem->lock);
++ args.count = sem->u.sem.count;
++ args.max = sem->u.sem.max;
++ args.flags = sem->u.sem.flags;
++ spin_unlock(&sem->lock);
++
++ put_obj(sem);
++
++ if (copy_to_user(user_args, &args, sizeof(args)))
++ return -EFAULT;
++ return 0;
++}
++
++static int winesync_read_mutex(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_mutex_args __user *user_args = argp;
++ struct winesync_mutex_args args;
++ struct winesync_obj *mutex;
++ __s32 id;
++ int ret;
++
++ if (get_user(id, &user_args->mutex))
++ return -EFAULT;
++
++ mutex = get_obj(dev, id);
++ if (!mutex)
++ return -EINVAL;
++ if (mutex->type != WINESYNC_TYPE_MUTEX) {
++ put_obj(mutex);
++ return -EINVAL;
++ }
++
++ args.mutex = id;
++ spin_lock(&mutex->lock);
++ args.count = mutex->u.mutex.count;
++ args.owner = mutex->u.mutex.owner;
++ ret = mutex->u.mutex.ownerdead ? -EOWNERDEAD : 0;
++ spin_unlock(&mutex->lock);
++
++ put_obj(mutex);
++
++ if (copy_to_user(user_args, &args, sizeof(args)))
++ return -EFAULT;
++ return ret;
++}
++
++/*
++ * Actually change the mutex state to mark its owner as dead.
++ */
++static void put_mutex_ownerdead_state(struct winesync_obj *mutex)
++{
++ lockdep_assert_held(&mutex->lock);
++
++ mutex->u.mutex.ownerdead = true;
++ mutex->u.mutex.owner = 0;
++ mutex->u.mutex.count = 0;
++}
++
++static int winesync_kill_owner(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_obj *obj;
++ __u32 owner;
++ int id;
++
++ if (get_user(owner, (__u32 __user *)argp))
++ return -EFAULT;
++ if (!owner)
++ return -EINVAL;
++
++ rcu_read_lock();
++
++ idr_for_each_entry(&dev->objects, obj, id) {
++ if (!kref_get_unless_zero(&obj->refcount))
++ continue;
++
++ if (obj->type != WINESYNC_TYPE_MUTEX) {
++ put_obj(obj);
++ continue;
++ }
++
++ if (refcount_read(&obj->all_hint) > 1) {
++ spin_lock(&dev->wait_all_lock);
++ spin_lock(&obj->lock);
++
++ if (obj->u.mutex.owner == owner) {
++ put_mutex_ownerdead_state(obj);
++ try_wake_all_obj(dev, obj);
++ try_wake_any_mutex(obj);
++ }
++
++ spin_unlock(&obj->lock);
++ spin_unlock(&dev->wait_all_lock);
++ } else {
++ spin_lock(&obj->lock);
++
++ if (obj->u.mutex.owner == owner) {
++ put_mutex_ownerdead_state(obj);
++ try_wake_any_mutex(obj);
++ }
++
++ spin_unlock(&obj->lock);
++ }
++
++ put_obj(obj);
++ }
++
++ rcu_read_unlock();
++
++ return 0;
++}
++
++static int winesync_schedule(const struct winesync_q *q, ktime_t *timeout)
++{
++ int ret = 0;
++
++ do {
++ if (signal_pending(current)) {
++ ret = -ERESTARTSYS;
++ break;
++ }
++
++ set_current_state(TASK_INTERRUPTIBLE);
++ if (atomic_read(&q->signaled) != -1) {
++ ret = 0;
++ break;
++ }
++ ret = schedule_hrtimeout(timeout, HRTIMER_MODE_ABS);
++ } while (ret < 0);
++ __set_current_state(TASK_RUNNING);
++
++ return ret;
++}
++
++/*
++ * Allocate and initialize most of the winesync_q structure, but do not queue us
++ * yet. Also, calculate the relative timeout in jiffies.
++ */
++static int setup_wait(struct winesync_device *dev,
++ const struct winesync_wait_args *args, bool all,
++ ktime_t *ret_timeout, struct winesync_q **ret_q)
++{
++ const __u32 count = args->count;
++ struct winesync_q *q;
++ ktime_t timeout = 0;
++ __s32 *ids;
++ __u32 i, j;
++
++ if (args->timeout) {
++ struct timespec64 to;
++
++ if (get_timespec64(&to, u64_to_user_ptr(args->timeout)))
++ return -EFAULT;
++ if (!timespec64_valid(&to))
++ return -EINVAL;
++
++ timeout = timespec64_to_ns(&to);
++ }
++
++ ids = kmalloc_array(args->count, sizeof(*ids), GFP_KERNEL);
++ if (!ids)
++ return -ENOMEM;
++ if (copy_from_user(ids, u64_to_user_ptr(args->objs),
++ array_size(args->count, sizeof(*ids)))) {
++ kfree(ids);
++ return -EFAULT;
++ }
++
++ q = kmalloc(struct_size(q, entries, count), GFP_KERNEL);
++ if (!q) {
++ kfree(ids);
++ return -ENOMEM;
++ }
++ q->task = current;
++ q->owner = args->owner;
++ atomic_set(&q->signaled, -1);
++ q->all = all;
++ q->ownerdead = false;
++ q->count = count;
++
++ for (i = 0; i < count; i++) {
++ struct winesync_q_entry *entry = &q->entries[i];
++ struct winesync_obj *obj = get_obj(dev, ids[i]);
++
++ if (!obj)
++ goto err;
++
++ if (all) {
++ /* Check that the objects are all distinct. */
++ for (j = 0; j < i; j++) {
++ if (obj == q->entries[j].obj) {
++ put_obj(obj);
++ goto err;
++ }
++ }
++ }
++
++ entry->obj = obj;
++ entry->q = q;
++ entry->index = i;
++ }
++
++ kfree(ids);
++
++ *ret_q = q;
++ *ret_timeout = timeout;
++ return 0;
++
++err:
++ for (j = 0; j < i; j++)
++ put_obj(q->entries[j].obj);
++ kfree(ids);
++ kfree(q);
++ return -EINVAL;
++}
++
++static void try_wake_any_obj(struct winesync_obj *obj)
++{
++ switch (obj->type) {
++ case WINESYNC_TYPE_SEM:
++ try_wake_any_sem(obj);
++ break;
++ case WINESYNC_TYPE_MUTEX:
++ try_wake_any_mutex(obj);
++ break;
++ }
++}
++
++static int winesync_wait_any(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_wait_args args;
++ struct winesync_q *q;
++ ktime_t timeout;
++ __u32 i;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++ if (!args.owner)
++ return -EINVAL;
++
++ ret = setup_wait(dev, &args, false, &timeout, &q);
++ if (ret < 0)
++ return ret;
++
++ /* queue ourselves */
++
++ for (i = 0; i < args.count; i++) {
++ struct winesync_q_entry *entry = &q->entries[i];
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ spin_lock(&obj->lock);
++ list_add_tail(&entry->node, &obj->any_waiters);
++ spin_unlock(&obj->lock);
++ }
++
++ /* check if we are already signaled */
++
++ for (i = 0; i < args.count; i++) {
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ if (atomic_read(&q->signaled) != -1)
++ break;
++
++ spin_lock(&obj->lock);
++ try_wake_any_obj(obj);
++ spin_unlock(&obj->lock);
++ }
++
++ /* sleep */
++
++ ret = winesync_schedule(q, args.timeout ? &timeout : NULL);
++
++ /* and finally, unqueue */
++
++ for (i = 0; i < args.count; i++) {
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ spin_lock(&obj->lock);
++ list_del(&q->entries[i].node);
++ spin_unlock(&obj->lock);
++
++ put_obj(obj);
++ }
++
++ if (atomic_read(&q->signaled) != -1) {
++ struct winesync_wait_args __user *user_args = argp;
++
++ /* even if we caught a signal, we need to communicate success */
++ ret = q->ownerdead ? -EOWNERDEAD : 0;
++
++ if (put_user(atomic_read(&q->signaled), &user_args->index))
++ ret = -EFAULT;
++ } else if (!ret) {
++ ret = -ETIMEDOUT;
++ }
++
++ kfree(q);
++ return ret;
++}
++
++static int winesync_wait_all(struct winesync_device *dev, void __user *argp)
++{
++ struct winesync_wait_args args;
++ struct winesync_q *q;
++ ktime_t timeout;
++ __u32 i;
++ int ret;
++
++ if (copy_from_user(&args, argp, sizeof(args)))
++ return -EFAULT;
++ if (!args.owner)
++ return -EINVAL;
++
++ ret = setup_wait(dev, &args, true, &timeout, &q);
++ if (ret < 0)
++ return ret;
++
++ /* queue ourselves */
++
++ spin_lock(&dev->wait_all_lock);
++
++ for (i = 0; i < args.count; i++) {
++ struct winesync_q_entry *entry = &q->entries[i];
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ refcount_inc(&obj->all_hint);
++
++ /*
++ * obj->all_waiters is protected by dev->wait_all_lock rather
++ * than obj->lock, so there is no need to acquire it here.
++ */
++ list_add_tail(&entry->node, &obj->all_waiters);
++ }
++
++ /* check if we are already signaled */
++
++ try_wake_all(dev, q, NULL);
++
++ spin_unlock(&dev->wait_all_lock);
++
++ /* sleep */
++
++ ret = winesync_schedule(q, args.timeout ? &timeout : NULL);
++
++ /* and finally, unqueue */
++
++ spin_lock(&dev->wait_all_lock);
++
++ for (i = 0; i < args.count; i++) {
++ struct winesync_q_entry *entry = &q->entries[i];
++ struct winesync_obj *obj = q->entries[i].obj;
++
++ /*
++ * obj->all_waiters is protected by dev->wait_all_lock rather
++ * than obj->lock, so there is no need to acquire it here.
++ */
++ list_del(&entry->node);
++
++ refcount_dec(&obj->all_hint);
++
++ put_obj(obj);
++ }
++
++ spin_unlock(&dev->wait_all_lock);
++
++ if (atomic_read(&q->signaled) != -1) {
++ /* even if we caught a signal, we need to communicate success */
++ ret = q->ownerdead ? -EOWNERDEAD : 0;
++ } else if (!ret) {
++ ret = -ETIMEDOUT;
++ }
++
++ kfree(q);
++ return ret;
++}
++
++static long winesync_char_ioctl(struct file *file, unsigned int cmd,
++ unsigned long parm)
++{
++ struct winesync_device *dev = file->private_data;
++ void __user *argp = (void __user *)parm;
++
++ switch (cmd) {
++ case WINESYNC_IOC_CREATE_SEM:
++ return winesync_create_sem(dev, argp);
++ case WINESYNC_IOC_CREATE_MUTEX:
++ return winesync_create_mutex(dev, argp);
++ case WINESYNC_IOC_DELETE:
++ return winesync_delete(dev, argp);
++ case WINESYNC_IOC_GET_SEM:
++ return winesync_get_sem(dev, argp);
++ case WINESYNC_IOC_PUT_SEM:
++ return winesync_put_sem(dev, argp, false);
++ case WINESYNC_IOC_PULSE_SEM:
++ return winesync_put_sem(dev, argp, true);
++ case WINESYNC_IOC_PUT_MUTEX:
++ return winesync_put_mutex(dev, argp);
++ case WINESYNC_IOC_READ_SEM:
++ return winesync_read_sem(dev, argp);
++ case WINESYNC_IOC_READ_MUTEX:
++ return winesync_read_mutex(dev, argp);
++ case WINESYNC_IOC_KILL_OWNER:
++ return winesync_kill_owner(dev, argp);
++ case WINESYNC_IOC_WAIT_ANY:
++ return winesync_wait_any(dev, argp);
++ case WINESYNC_IOC_WAIT_ALL:
++ return winesync_wait_all(dev, argp);
++ default:
++ return -ENOSYS;
++ }
++}
++
++static const struct file_operations winesync_fops = {
++ .owner = THIS_MODULE,
++ .open = winesync_char_open,
++ .release = winesync_char_release,
++ .unlocked_ioctl = winesync_char_ioctl,
++ .compat_ioctl = winesync_char_ioctl,
++ .llseek = no_llseek,
++};
++
++static struct miscdevice winesync_misc = {
++ .minor = WINESYNC_MINOR,
++ .name = WINESYNC_NAME,
++ .fops = &winesync_fops,
++};
++
++static int __init winesync_init(void)
++{
++ return misc_register(&winesync_misc);
++}
++
++static void __exit winesync_exit(void)
++{
++ misc_deregister(&winesync_misc);
++}
++
++module_init(winesync_init);
++module_exit(winesync_exit);
++
++MODULE_AUTHOR("Zebediah Figura");
++MODULE_DESCRIPTION("Kernel driver for Wine synchronization primitives");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("devname:" WINESYNC_NAME);
++MODULE_ALIAS_MISCDEV(WINESYNC_MINOR);
+diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
+index 0676f18093f9..350aecfcfb29 100644
+--- a/include/linux/miscdevice.h
++++ b/include/linux/miscdevice.h
+@@ -71,6 +71,7 @@
+ #define USERIO_MINOR 240
+ #define VHOST_VSOCK_MINOR 241
+ #define RFKILL_MINOR 242
++#define WINESYNC_MINOR 243
+ #define MISC_DYNAMIC_MINOR 255
+
+ struct device;
+diff --git a/include/uapi/linux/winesync.h b/include/uapi/linux/winesync.h
+new file mode 100644
+index 000000000000..efc591795249
+--- /dev/null
++++ b/include/uapi/linux/winesync.h
+@@ -0,0 +1,61 @@
++/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
++/*
++ * Kernel support for Wine synchronization primitives
++ *
++ * Copyright (C) 2021 Zebediah Figura
++ */
++
++#ifndef __LINUX_WINESYNC_H
++#define __LINUX_WINESYNC_H
++
++#include <linux/types.h>
++
++#define WINESYNC_SEM_GETONWAIT 1
++
++struct winesync_sem_args {
++ __s32 sem;
++ __u32 count;
++ __u32 max;
++ __u32 flags;
++};
++
++struct winesync_mutex_args {
++ __s32 mutex;
++ __u32 owner;
++ __u32 count;
++};
++
++struct winesync_wait_args {
++ __u64 timeout;
++ __u64 objs;
++ __u32 count;
++ __u32 owner;
++ __u32 index;
++ __u32 pad;
++};
++
++#define WINESYNC_IOC_BASE 0xf7
++
++#define WINESYNC_IOC_CREATE_SEM _IOWR(WINESYNC_IOC_BASE, 0, \
++ struct winesync_sem_args)
++#define WINESYNC_IOC_DELETE _IOW (WINESYNC_IOC_BASE, 1, __s32)
++#define WINESYNC_IOC_PUT_SEM _IOWR(WINESYNC_IOC_BASE, 2, \
++ struct winesync_sem_args)
++#define WINESYNC_IOC_WAIT_ANY _IOWR(WINESYNC_IOC_BASE, 3, \
++ struct winesync_wait_args)
++#define WINESYNC_IOC_WAIT_ALL _IOW (WINESYNC_IOC_BASE, 4, \
++ struct winesync_wait_args)
++#define WINESYNC_IOC_CREATE_MUTEX _IOWR(WINESYNC_IOC_BASE, 5, \
++ struct winesync_mutex_args)
++#define WINESYNC_IOC_PUT_MUTEX _IOWR(WINESYNC_IOC_BASE, 6, \
++ struct winesync_mutex_args)
++#define WINESYNC_IOC_KILL_OWNER _IOW (WINESYNC_IOC_BASE, 7, __u32)
++#define WINESYNC_IOC_READ_SEM _IOWR(WINESYNC_IOC_BASE, 8, \
++ struct winesync_sem_args)
++#define WINESYNC_IOC_READ_MUTEX _IOWR(WINESYNC_IOC_BASE, 9, \
++ struct winesync_mutex_args)
++#define WINESYNC_IOC_GET_SEM _IOW (WINESYNC_IOC_BASE, 10, __s32)
++#define WINESYNC_IOC_PULSE_SEM _IOWR(WINESYNC_IOC_BASE, 11, \
++ struct winesync_sem_args)
++
++#endif
+diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
+index 6c575cf34a71..7f43a50ee19e 100644
+--- a/tools/testing/selftests/Makefile
++++ b/tools/testing/selftests/Makefile
+@@ -9,6 +9,7 @@ TARGETS += core
+ TARGETS += cpufreq
+ TARGETS += cpu-hotplug
+ TARGETS += drivers/dma-buf
++TARGETS += drivers/winesync
+ TARGETS += efivarfs
+ TARGETS += exec
+ TARGETS += filesystems
+diff --git a/tools/testing/selftests/drivers/winesync/Makefile b/tools/testing/selftests/drivers/winesync/Makefile
+new file mode 100644
+index 000000000000..43b39fdeea10
+--- /dev/null
++++ b/tools/testing/selftests/drivers/winesync/Makefile
+@@ -0,0 +1,8 @@
++# SPDX-LICENSE-IDENTIFIER: GPL-2.0-only
++TEST_GEN_PROGS := winesync
++
++top_srcdir =../../../../..
++CFLAGS += -I$(top_srcdir)/usr/include
++LDLIBS += -lpthread
++
++include ../../lib.mk
+diff --git a/tools/testing/selftests/drivers/winesync/config b/tools/testing/selftests/drivers/winesync/config
+new file mode 100644
+index 000000000000..60539c826d06
+--- /dev/null
++++ b/tools/testing/selftests/drivers/winesync/config
+@@ -0,0 +1 @@
++CONFIG_WINESYNC=y
+diff --git a/tools/testing/selftests/drivers/winesync/winesync.c b/tools/testing/selftests/drivers/winesync/winesync.c
+new file mode 100644
+index 000000000000..52373fcd5c8c
+--- /dev/null
++++ b/tools/testing/selftests/drivers/winesync/winesync.c
+@@ -0,0 +1,1486 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++ * Various unit tests for the "winesync" synchronization primitive driver.
++ *
++ * Copyright (C) 2021 Zebediah Figura
++ */
++
++#define _GNU_SOURCE
++#include <sys/ioctl.h>
++#include <sys/stat.h>
++#include <fcntl.h>
++#include <time.h>
++#include <pthread.h>
++#include <linux/winesync.h>
++#include "../../kselftest_harness.h"
++
++TEST(semaphore_state)
++{
++ struct winesync_wait_args wait_args;
++ struct winesync_sem_args sem_args;
++ struct timespec timeout;
++ int fd, ret;
++
++ clock_gettime(CLOCK_MONOTONIC, &timeout);
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 3;
++ sem_args.max = 2;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = 0;
++ ret = ioctl(fd, WINESYNC_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, WINESYNC_IOC_CREATE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, sem_args.sem);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ sem_args.flags = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++ EXPECT_EQ(0, sem_args.flags);
++
++ sem_args.count = 0;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)&sem_args.sem;
++ wait_args.count = 1;
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EWOULDBLOCK, errno);
++
++ sem_args.count = 3;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ /* Test PULSE. */
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++TEST(semaphore_state_getonwait)
++{
++ struct winesync_wait_args wait_args;
++ struct winesync_sem_args sem_args;
++ struct timespec timeout;
++ int fd, ret;
++
++ clock_gettime(CLOCK_MONOTONIC, &timeout);
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 3;
++ sem_args.max = 2;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = WINESYNC_SEM_GETONWAIT;
++ ret = ioctl(fd, WINESYNC_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, WINESYNC_IOC_CREATE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, sem_args.sem);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 0;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)&sem_args.sem;
++ wait_args.count = 1;
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ sem_args.count = 3;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ /* Test GET. */
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EWOULDBLOCK, errno);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ /* Test PULSE. */
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOVERFLOW, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(2, sem_args.max);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++TEST(mutex_state)
++{
++ struct winesync_wait_args wait_args;
++ struct winesync_mutex_args mutex_args;
++ struct timespec timeout;
++ __u32 owner;
++ int fd, ret;
++
++ clock_gettime(CLOCK_MONOTONIC, &timeout);
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 0;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ mutex_args.owner = 0;
++ mutex_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 2;
++ mutex_args.mutex = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 456;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EPERM, errno);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EPERM, errno);
++
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)&mutex_args.mutex;
++ wait_args.count = 1;
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 456;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ owner = 0;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(0, ret);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ owner = 456;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(0, ret);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(0, wait_args.index);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(0, ret);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(0, wait_args.index);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ mutex_args.owner = 0;
++ mutex_args.count = 0;
++ mutex_args.mutex = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++TEST(wait_any)
++{
++ struct winesync_mutex_args mutex_args = {0};
++ struct winesync_wait_args wait_args = {0};
++ struct winesync_sem_args sem_args = {0};
++ struct timespec timeout;
++ __s32 objs[2];
++ __u32 owner;
++ int fd, ret;
++
++ clock_gettime(CLOCK_MONOTONIC, &timeout);
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 2;
++ sem_args.max = 3;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = WINESYNC_SEM_GETONWAIT;
++ ret = ioctl(fd, WINESYNC_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, WINESYNC_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;
++
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)objs;
++ wait_args.count = 2;
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++ EXPECT_EQ((uintptr_t)objs, wait_args.objs);
++ EXPECT_EQ(2, wait_args.count);
++ EXPECT_EQ(123, wait_args.owner);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ wait_args.owner = 123;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(0, ret);
++
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++ EXPECT_EQ(1, wait_args.index);
++
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, wait_args.index);
++
++ /* test waiting on the same object twice */
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ objs[0] = objs[1] = sem_args.sem;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ wait_args.count = 0;
++ wait_args.objs = (uintptr_t)NULL;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++TEST(wait_all)
++{
++ struct winesync_mutex_args mutex_args = {0};
++ struct winesync_wait_args wait_args = {0};
++ struct winesync_sem_args sem_args = {0};
++ struct timespec timeout;
++ __s32 objs[2];
++ __u32 owner;
++ int fd, ret;
++
++ clock_gettime(CLOCK_MONOTONIC, &timeout);
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 2;
++ sem_args.max = 3;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = WINESYNC_SEM_GETONWAIT;
++ ret = ioctl(fd, WINESYNC_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, WINESYNC_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;
++
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)objs;
++ wait_args.count = 2;
++ wait_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ((uintptr_t)objs, wait_args.objs);
++ EXPECT_EQ(2, wait_args.count);
++ EXPECT_EQ(123, wait_args.owner);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ wait_args.owner = 456;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ wait_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(0, ret);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(ETIMEDOUT, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ sem_args.count = 3;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_KILL_OWNER, &owner);
++ EXPECT_EQ(0, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EOWNERDEAD, errno);
++
++ sem_args.count = 0xdeadbeef;
++ sem_args.max = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, sem_args.count);
++ EXPECT_EQ(3, sem_args.max);
++
++ mutex_args.count = 0xdeadbeef;
++ mutex_args.owner = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(123, mutex_args.owner);
++
++ /* test waiting on the same object twice */
++ objs[0] = objs[1] = sem_args.sem;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++TEST(invalid_objects)
++{
++ struct winesync_mutex_args mutex_args = {0};
++ struct winesync_wait_args wait_args = {0};
++ struct winesync_sem_args sem_args = {0};
++ __s32 objs[2] = {0};
++ int fd, ret;
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_GET_SEM, &sem_args.sem);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ wait_args.objs = (uintptr_t)objs;
++ wait_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &objs[0]);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ sem_args.max = 1;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++
++ mutex_args.mutex = sem_args.sem;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ objs[0] = sem_args.sem;
++ objs[1] = sem_args.sem + 1;
++ wait_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ objs[0] = sem_args.sem + 1;
++ objs[1] = sem_args.sem;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ALL, &wait_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++
++ sem_args.sem = mutex_args.mutex;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(-1, ret);
++ EXPECT_EQ(EINVAL, errno);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ close(fd);
++}
++
++struct wake_args
++{
++ int fd;
++ __s32 obj;
++};
++
++struct wait_args
++{
++ int fd;
++ unsigned long request;
++ struct winesync_wait_args *args;
++ int ret;
++ int err;
++};
++
++static void *wait_thread(void *arg)
++{
++ struct wait_args *args = arg;
++
++ args->ret = ioctl(args->fd, args->request, args->args);
++ args->err = errno;
++ return NULL;
++}
++
++static void get_abs_timeout(struct timespec *timeout, clockid_t clock,
++ unsigned int ms)
++{
++ clock_gettime(clock, timeout);
++ timeout->tv_nsec += ms * 1000000;
++ timeout->tv_sec += (timeout->tv_nsec / 1000000000);
++ timeout->tv_nsec %= 1000000000;
++}
++
++static int wait_for_thread(pthread_t thread, unsigned int ms)
++{
++ struct timespec timeout;
++ get_abs_timeout(&timeout, CLOCK_REALTIME, ms);
++ return pthread_timedjoin_np(thread, NULL, &timeout);
++}
++
++TEST(wake_any)
++{
++ struct winesync_mutex_args mutex_args = {0};
++ struct winesync_wait_args wait_args = {0};
++ struct winesync_sem_args sem_args = {0};
++ struct wait_args thread_args;
++ struct timespec timeout;
++ pthread_t thread;
++ __s32 objs[2];
++ __u32 owner;
++ int fd, ret;
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 0;
++ sem_args.max = 3;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = WINESYNC_SEM_GETONWAIT;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, sem_args.sem);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 1;
++ mutex_args.mutex = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_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;
++
++ /* test waking the semaphore */
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 1000);
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)objs;
++ wait_args.count = 2;
++ wait_args.owner = 456;
++ wait_args.index = 0xdeadbeef;
++ thread_args.fd = fd;
++ thread_args.args = &wait_args;
++ thread_args.request = WINESYNC_IOC_WAIT_ANY;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, thread_args.ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ /* test waking the semaphore via pulse */
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 1000);
++ wait_args.owner = 456;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ sem_args.count = 2;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, thread_args.ret);
++ EXPECT_EQ(0, wait_args.index);
++
++ /* test waking the mutex */
++
++ /* first grab it again for owner 123 */
++ wait_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, wait_args.index);
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 1000);
++ wait_args.owner = 456;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(2, mutex_args.count);
++
++ ret = pthread_tryjoin_np(thread, NULL);
++ EXPECT_EQ(EBUSY, ret);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, thread_args.ret);
++ EXPECT_EQ(1, wait_args.index);
++
++ /* delete an object while it's being waited on */
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 200);
++ wait_args.owner = 123;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 200);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(-1, thread_args.ret);
++ EXPECT_EQ(ETIMEDOUT, thread_args.err);
++
++ close(fd);
++}
++
++TEST(wake_all)
++{
++ struct winesync_wait_args wait_args = {0}, wait_args2 = {0};
++ struct winesync_mutex_args mutex_args = {0};
++ struct winesync_sem_args sem_args = {0};
++ struct timespec timeout, timeout2;
++ struct wait_args thread_args;
++ pthread_t thread;
++ __s32 objs[2];
++ __u32 owner;
++ int fd, ret;
++
++ fd = open("/dev/winesync", O_CLOEXEC | O_RDONLY);
++ ASSERT_LE(0, fd);
++
++ sem_args.count = 0;
++ sem_args.max = 3;
++ sem_args.sem = 0xdeadbeef;
++ sem_args.flags = WINESYNC_SEM_GETONWAIT;
++ ret = ioctl(fd, WINESYNC_IOC_CREATE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_NE(0xdeadbeef, sem_args.sem);
++
++ mutex_args.owner = 123;
++ mutex_args.count = 1;
++ mutex_args.mutex = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_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;
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 1000);
++ wait_args.timeout = (uintptr_t)&timeout;
++ wait_args.objs = (uintptr_t)objs;
++ wait_args.count = 2;
++ wait_args.owner = 456;
++ thread_args.fd = fd;
++ thread_args.args = &wait_args;
++ thread_args.request = WINESYNC_IOC_WAIT_ALL;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = pthread_tryjoin_np(thread, NULL);
++ EXPECT_EQ(EBUSY, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, sem_args.count);
++
++ get_abs_timeout(&timeout2, CLOCK_MONOTONIC, 0);
++ wait_args2.timeout = (uintptr_t)&timeout2;
++ wait_args2.objs = (uintptr_t)&sem_args.sem;
++ wait_args2.count = 1;
++ wait_args2.owner = 123;
++ wait_args2.index = 0xdeadbeef;
++ ret = ioctl(fd, WINESYNC_IOC_WAIT_ANY, &wait_args2);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, wait_args2.index);
++
++ mutex_args.owner = 123;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++
++ ret = pthread_tryjoin_np(thread, NULL);
++ EXPECT_EQ(EBUSY, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, mutex_args.count);
++ EXPECT_EQ(0, mutex_args.owner);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PUT_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = ioctl(fd, WINESYNC_IOC_READ_MUTEX, &mutex_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(1, mutex_args.count);
++ EXPECT_EQ(456, mutex_args.owner);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, thread_args.ret);
++
++ /* test waking the semaphore via pulse */
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 1000);
++ wait_args.owner = 456;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ sem_args.count = 1;
++ ret = ioctl(fd, WINESYNC_IOC_PULSE_SEM, &sem_args);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, sem_args.count);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(0, thread_args.ret);
++
++ /* delete an object while it's being waited on */
++
++ get_abs_timeout(&timeout, CLOCK_MONOTONIC, 200);
++ wait_args.owner = 123;
++ ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 100);
++ EXPECT_EQ(ETIMEDOUT, ret);
++
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &sem_args.sem);
++ EXPECT_EQ(0, ret);
++ ret = ioctl(fd, WINESYNC_IOC_DELETE, &mutex_args.mutex);
++ EXPECT_EQ(0, ret);
++
++ ret = wait_for_thread(thread, 200);
++ EXPECT_EQ(0, ret);
++ EXPECT_EQ(-1, thread_args.ret);
++ EXPECT_EQ(ETIMEDOUT, thread_args.err);
++
++ close(fd);
++}
++
++TEST_HARNESS_MAIN