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Update NTSync patches

This commit is contained in:
Wizzard 2024-02-04 00:08:35 -05:00
parent 5719eb10bc
commit 21b7898ff9
66 changed files with 7344 additions and 1774 deletions
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68
linux-clang/linux6.7-zen/patches/0001-[PATCH_RFC_2_9]_ntsync:_Reserve_a_minor_device_number_and_ioctl _range..patch
View File

@ -1,68 +0,0 @@
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
Documentation/admin-guide/devices.txt | 3 ++-
Documentation/userspace-api/ioctl/ioctl-number.rst | 2 ++
drivers/misc/ntsync.c | 3 ++-
include/linux/miscdevice.h | 1 +
4 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt
index 94c98be1329a..041404397ee5 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/ntsync NT 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/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 457e16f06e04..a1326a5bc2e0 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -378,6 +378,8 @@ Code Seq# Include File Comments
<mailto:thomas@winischhofer.net>
0xF6 all LTTng Linux Trace Toolkit Next Generation
<mailto:mathieu.desnoyers@efficios.com>
+0xF7 00-1F uapi/linux/ntsync.h NT synchronization primitives
+ <mailto:wine-devel@winehq.org>
0xF8 all arch/x86/include/uapi/asm/amd_hsmp.h AMD HSMP EPYC system management interface driver
<mailto:nchatrad@amd.com>
0xFD all linux/dm-ioctl.h
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 9424c6210e51..84b498e2b2d5 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -40,7 +40,7 @@ static const struct file_operations ntsync_fops = {
};
static struct miscdevice ntsync_misc = {
- .minor = MISC_DYNAMIC_MINOR,
+ .minor = NTSYNC_MINOR,
.name = NTSYNC_NAME,
.fops = &ntsync_fops,
};
@@ -51,3 +51,4 @@ MODULE_AUTHOR("Elizabeth Figura");
MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives");
MODULE_LICENSE("GPL");
MODULE_ALIAS("devname:" NTSYNC_NAME);
+MODULE_ALIAS_MISCDEV(NTSYNC_MINOR);
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index c0fea6ca5076..fe5d9366fdf7 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 NTSYNC_MINOR 243
#define MISC_DYNAMIC_MINOR 255
struct device;
--
2.43.0

191
linux-clang/linux6.7-zen/patches/0002-[PATCH_RFC_3_9]_ntsync:_Introduce_NTSYNC_IOC_CREATE_SEM_and _NTSYNC_IOC_DELETE..patch
View File

@ -1,191 +0,0 @@
These correspond to the NT syscalls NtCreateSemaphore() and NtClose().
Unlike those functions, however, these ioctls do not handle object names, or
lookup of existing objects, or handle reference counting, but simply create the
underlying primitive. The user space emulator is expected to implement those
functions if they are required.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 117 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 25 ++++++++
2 files changed, 142 insertions(+)
create mode 100644 include/uapi/linux/ntsync.h
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 84b498e2b2d5..3287b94be351 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -8,23 +8,140 @@
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/xarray.h>
+#include <uapi/linux/ntsync.h>
#define NTSYNC_NAME "ntsync"
+enum ntsync_type {
+ NTSYNC_TYPE_SEM,
+};
+
+struct ntsync_obj {
+ struct rcu_head rhead;
+ struct kref refcount;
+
+ enum ntsync_type type;
+
+ union {
+ struct {
+ __u32 count;
+ __u32 max;
+ } sem;
+ } u;
+};
+
+struct ntsync_device {
+ struct xarray objects;
+};
+
+static void destroy_obj(struct kref *ref)
+{
+ struct ntsync_obj *obj = container_of(ref, struct ntsync_obj, refcount);
+
+ kfree_rcu(obj, rhead);
+}
+
+static void put_obj(struct ntsync_obj *obj)
+{
+ kref_put(&obj->refcount, destroy_obj);
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ xa_init_flags(&dev->objects, XA_FLAGS_ALLOC);
+
+ file->private_data = dev;
return nonseekable_open(inode, file);
}
static int ntsync_char_release(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev = file->private_data;
+ struct ntsync_obj *obj;
+ unsigned long id;
+
+ xa_for_each(&dev->objects, id, obj)
+ put_obj(obj);
+
+ xa_destroy(&dev->objects);
+
+ kfree(dev);
+
+ return 0;
+}
+
+static void init_obj(struct ntsync_obj *obj)
+{
+ kref_init(&obj->refcount);
+}
+
+static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ __u32 id;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (args.count > args.max)
+ return -EINVAL;
+
+ sem = kzalloc(sizeof(*sem), GFP_KERNEL);
+ if (!sem)
+ return -ENOMEM;
+
+ init_obj(sem);
+ sem->type = NTSYNC_TYPE_SEM;
+ sem->u.sem.count = args.count;
+ sem->u.sem.max = args.max;
+
+ ret = xa_alloc(&dev->objects, &id, sem, xa_limit_32b, GFP_KERNEL);
+ if (ret < 0) {
+ kfree(sem);
+ return ret;
+ }
+
+ return put_user(id, &user_args->sem);
+}
+
+static int ntsync_delete(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_obj *obj;
+ __u32 id;
+
+ if (get_user(id, (__u32 __user *)argp))
+ return -EFAULT;
+
+ obj = xa_erase(&dev->objects, id);
+ if (!obj)
+ return -EINVAL;
+
+ put_obj(obj);
return 0;
}
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
+ struct ntsync_device *dev = file->private_data;
+ void __user *argp = (void __user *)parm;
+
switch (cmd) {
+ case NTSYNC_IOC_CREATE_SEM:
+ return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_DELETE:
+ return ntsync_delete(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
new file mode 100644
index 000000000000..d97afc138dcc
--- /dev/null
+++ b/include/uapi/linux/ntsync.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Kernel support for NT synchronization primitive emulation
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#ifndef __LINUX_NTSYNC_H
+#define __LINUX_NTSYNC_H
+
+#include <linux/types.h>
+
+struct ntsync_sem_args {
+ __u32 sem;
+ __u32 count;
+ __u32 max;
+};
+
+#define NTSYNC_IOC_BASE 0xf7
+
+#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \
+ struct ntsync_sem_args)
+#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
+
+#endif
--
2.43.0

147
linux-clang/linux6.7-zen/patches/0003-[PATCH_RFC_4_9]_ntsync:_Introduce_NTSYNC_IOC_PUT_SEM..patch
View File

@ -1,147 +0,0 @@
This corresponds to the NT syscall NtReleaseSemaphore().
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 76 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 2 +
2 files changed, 78 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 3287b94be351..d1c91c2a4f1a 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -21,9 +21,11 @@ enum ntsync_type {
struct ntsync_obj {
struct rcu_head rhead;
struct kref refcount;
+ spinlock_t lock;
enum ntsync_type type;
+ /* The following fields are protected by the object lock. */
union {
struct {
__u32 count;
@@ -36,6 +38,19 @@ struct ntsync_device {
struct xarray objects;
};
+static struct ntsync_obj *get_obj(struct ntsync_device *dev, __u32 id)
+{
+ struct ntsync_obj *obj;
+
+ rcu_read_lock();
+ obj = xa_load(&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 ntsync_obj *obj = container_of(ref, struct ntsync_obj, refcount);
@@ -48,6 +63,18 @@ static void put_obj(struct ntsync_obj *obj)
kref_put(&obj->refcount, destroy_obj);
}
+static struct ntsync_obj *get_obj_typed(struct ntsync_device *dev, __u32 id,
+ enum ntsync_type type)
+{
+ struct ntsync_obj *obj = get_obj(dev, id);
+
+ if (obj && obj->type != type) {
+ put_obj(obj);
+ return NULL;
+ }
+ return obj;
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
struct ntsync_device *dev;
@@ -81,6 +108,7 @@ static int ntsync_char_release(struct inode *inode, struct file *file)
static void init_obj(struct ntsync_obj *obj)
{
kref_init(&obj->refcount);
+ spin_lock_init(&obj->lock);
}
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
@@ -131,6 +159,52 @@ static int ntsync_delete(struct ntsync_device *dev, void __user *argp)
return 0;
}
+/*
+ * Actually change the semaphore state, returning -EOVERFLOW if it is made
+ * invalid.
+ */
+static int put_sem_state(struct ntsync_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 ntsync_put_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ __u32 prev_count;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ sem = get_obj_typed(dev, args.sem, NTSYNC_TYPE_SEM);
+ if (!sem)
+ return -EINVAL;
+
+ spin_lock(&sem->lock);
+
+ prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count);
+
+ spin_unlock(&sem->lock);
+
+ put_obj(sem);
+
+ if (!ret && put_user(prev_count, &user_args->count))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
@@ -142,6 +216,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_PUT_SEM:
+ return ntsync_put_sem(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index d97afc138dcc..8c610d65f8ef 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -21,5 +21,7 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \
struct ntsync_sem_args)
#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
+#define NTSYNC_IOC_PUT_SEM _IOWR(NTSYNC_IOC_BASE, 2, \
+ struct ntsync_sem_args)
#endif
--
2.43.0

107
linux-clang/linux6.7-zen/patches/0007-[PATCH_RFC_8_9]_ntsync:_Introduce_NTSYNC_IOC_PUT_MUTEX..patch
View File

@ -1,107 +0,0 @@
This corresponds to the NT syscall NtReleaseMutant().
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 67 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 2 ++
2 files changed, 69 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index d48f2ef41341..28f43768d1c3 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -449,6 +449,71 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state, returning -EPERM if not the owner.
+ */
+static int put_mutex_state(struct ntsync_obj *mutex,
+ const struct ntsync_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 ntsync_put_mutex(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args;
+ struct ntsync_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_typed(dev, args.mutex, NTSYNC_TYPE_MUTEX);
+ if (!mutex)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_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 ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
{
int ret = 0;
@@ -738,6 +803,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_PUT_MUTEX:
+ return ntsync_put_mutex(dev, argp);
case NTSYNC_IOC_PUT_SEM:
return ntsync_put_sem(dev, argp);
case NTSYNC_IOC_WAIT_ALL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 26d1b3d4847f..2e44e7e77776 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -46,5 +46,7 @@ struct ntsync_wait_args {
struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_MUTEX _IOWR(NTSYNC_IOC_BASE, 5, \
struct ntsync_mutex_args)
+#define NTSYNC_IOC_PUT_MUTEX _IOWR(NTSYNC_IOC_BASE, 6, \
+ struct ntsync_mutex_args)
#endif
--
2.43.0

170
linux-clang/linux6.7-zen/patches/0008-[PATCH_RFC_9_9]_ntsync:_Introduce_NTSYNC_IOC_KILL_OWNER..patch
View File

@ -1,170 +0,0 @@
This does not correspond to any NT syscall, but rather should be called by the
user-space NT emulator when a thread dies. It is responsible for marking any
mutexes owned by that thread as abandoned.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 80 ++++++++++++++++++++++++++++++++++++-
include/uapi/linux/ntsync.h | 1 +
2 files changed, 79 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 28f43768d1c3..1173c750c106 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -64,6 +64,7 @@ struct ntsync_obj {
struct {
__u32 count;
__u32 owner;
+ bool ownerdead;
} mutex;
} u;
};
@@ -87,6 +88,7 @@ struct ntsync_q {
atomic_t signaled;
bool all;
+ bool ownerdead;
__u32 count;
struct ntsync_q_entry entries[];
};
@@ -240,6 +242,9 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.sem.count--;
break;
case NTSYNC_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;
@@ -299,6 +304,9 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
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);
@@ -514,6 +522,71 @@ static int ntsync_put_mutex(struct ntsync_device *dev, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state to mark its owner as dead.
+ */
+static void put_mutex_ownerdead_state(struct ntsync_obj *mutex)
+{
+ lockdep_assert_held(&mutex->lock);
+
+ mutex->u.mutex.ownerdead = true;
+ mutex->u.mutex.owner = 0;
+ mutex->u.mutex.count = 0;
+}
+
+static int ntsync_kill_owner(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_obj *obj;
+ unsigned long id;
+ __u32 owner;
+
+ if (get_user(owner, (__u32 __user *)argp))
+ return -EFAULT;
+ if (!owner)
+ return -EINVAL;
+
+ rcu_read_lock();
+
+ xa_for_each(&dev->objects, id, obj) {
+ if (!kref_get_unless_zero(&obj->refcount))
+ continue;
+
+ if (obj->type != NTSYNC_TYPE_MUTEX) {
+ put_obj(obj);
+ continue;
+ }
+
+ if (atomic_read(&obj->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_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 ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
{
int ret = 0;
@@ -585,6 +658,7 @@ static int setup_wait(struct ntsync_device *dev,
q->owner = args->owner;
atomic_set(&q->signaled, -1);
q->all = all;
+ q->ownerdead = false;
q->count = count;
for (i = 0; i < count; i++) {
@@ -697,7 +771,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -778,7 +852,7 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -803,6 +877,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_KILL_OWNER:
+ return ntsync_kill_owner(dev, argp);
case NTSYNC_IOC_PUT_MUTEX:
return ntsync_put_mutex(dev, argp);
case NTSYNC_IOC_PUT_SEM:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 2e44e7e77776..fec9a3993322 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -48,5 +48,6 @@ struct ntsync_wait_args {
struct ntsync_mutex_args)
#define NTSYNC_IOC_PUT_MUTEX _IOWR(NTSYNC_IOC_BASE, 6, \
struct ntsync_mutex_args)
+#define NTSYNC_IOC_KILL_OWNER _IOW (NTSYNC_IOC_BASE, 7, __u32)
#endif
--
2.43.0

24
linux-clang/linux6.7-zen/patches/0000-[PATCH_RFC_1_9]_ntsync:_Introduce_the_ntsync_driver_and_character _device..patch → linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0000.patch
View File

@ -1,3 +1,13 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 1/29] ntsync: Introduce the ntsync driver and
character device.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:28 -0600
Message-Id: <20240131021356.10322-2-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
ntsync uses a misc device as the simplest and least intrusive uAPI interface. ntsync uses a misc device as the simplest and least intrusive uAPI interface.
Each file description on the device represents an isolated NT instance, intended Each file description on the device represents an isolated NT instance, intended
@ -7,8 +17,8 @@ Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/Kconfig | 9 ++++++++ drivers/misc/Kconfig | 9 ++++++++
drivers/misc/Makefile | 1 + drivers/misc/Makefile | 1 +
drivers/misc/ntsync.c | 53 +++++++++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 52 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+) 3 files changed, 62 insertions(+)
create mode 100644 drivers/misc/ntsync.c create mode 100644 drivers/misc/ntsync.c
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
@ -45,15 +55,15 @@ index ea6ea5bbbc9c..153a3f4837e8 100644
obj-$(CONFIG_GP_PCI1XXXX) += mchp_pci1xxxx/ obj-$(CONFIG_GP_PCI1XXXX) += mchp_pci1xxxx/
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
new file mode 100644 new file mode 100644
index 000000000000..9424c6210e51 index 000000000000..e4969ef90722
--- /dev/null --- /dev/null
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -0,0 +1,53 @@ @@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only +// SPDX-License-Identifier: GPL-2.0-only
+/* +/*
+ * ntsync.c - Kernel driver for NT synchronization primitives + * ntsync.c - Kernel driver for NT synchronization primitives
+ * + *
+ * Copyright (C) 2021-2022 Elizabeth Figura + * Copyright (C) 2024 Elizabeth Figura
+ */ + */
+ +
+#include <linux/fs.h> +#include <linux/fs.h>
@ -86,7 +96,7 @@ index 000000000000..9424c6210e51
+ .open = ntsync_char_open, + .open = ntsync_char_open,
+ .release = ntsync_char_release, + .release = ntsync_char_release,
+ .unlocked_ioctl = ntsync_char_ioctl, + .unlocked_ioctl = ntsync_char_ioctl,
+ .compat_ioctl = ntsync_char_ioctl, + .compat_ioctl = compat_ptr_ioctl,
+ .llseek = no_llseek, + .llseek = no_llseek,
+}; +};
+ +
@ -101,6 +111,6 @@ index 000000000000..9424c6210e51
+MODULE_AUTHOR("Elizabeth Figura"); +MODULE_AUTHOR("Elizabeth Figura");
+MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives"); +MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives");
+MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL");
+MODULE_ALIAS("devname:" NTSYNC_NAME);
-- --
2.43.0 2.43.0

224
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0001.patch Normal file
View File

@ -0,0 +1,224 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 2/29] ntsync: Introduce NTSYNC_IOC_CREATE_SEM.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:29 -0600
Message-Id: <20240131021356.10322-3-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtCreateSemaphore().
Semaphores are one of three types of object to be implemented in this driver,
the others being mutexes and events.
An NT semaphore contains a 32-bit counter, and is signaled and can be acquired
when the counter is nonzero. The counter has a maximum value which is specified
at creation time. The initial value of the semaphore is also specified at
creation time. There are no restrictions on the maximum and initial value.
Each object is exposed as an file, to which any number of fds may be opened.
When all fds are closed, the object is deleted.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../userspace-api/ioctl/ioctl-number.rst | 2 +
drivers/misc/ntsync.c | 120 ++++++++++++++++++
include/uapi/linux/ntsync.h | 21 +++
3 files changed, 143 insertions(+)
create mode 100644 include/uapi/linux/ntsync.h
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 457e16f06e04..2f5c6994f042 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -173,6 +173,8 @@ Code Seq# Include File Comments
'M' 00-0F drivers/video/fsl-diu-fb.h conflict!
'N' 00-1F drivers/usb/scanner.h
'N' 40-7F drivers/block/nvme.c
+'N' 80-8F uapi/linux/ntsync.h NT synchronization primitives
+ <mailto:wine-devel@winehq.org>
'O' 00-06 mtd/ubi-user.h UBI
'P' all linux/soundcard.h conflict!
'P' 60-6F sound/sscape_ioctl.h conflict!
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index e4969ef90722..3ad86d98b82d 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -5,26 +5,146 @@
* Copyright (C) 2024 Elizabeth Figura
*/
+#include <linux/anon_inodes.h>
+#include <linux/file.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
+#include <linux/slab.h>
+#include <uapi/linux/ntsync.h>
#define NTSYNC_NAME "ntsync"
+enum ntsync_type {
+ NTSYNC_TYPE_SEM,
+};
+
+struct ntsync_obj {
+ enum ntsync_type type;
+
+ union {
+ struct {
+ __u32 count;
+ __u32 max;
+ } sem;
+ } u;
+
+ struct file *file;
+ struct ntsync_device *dev;
+};
+
+struct ntsync_device {
+ struct file *file;
+};
+
+static int ntsync_obj_release(struct inode *inode, struct file *file)
+{
+ struct ntsync_obj *obj = file->private_data;
+
+ fput(obj->dev->file);
+ kfree(obj);
+
+ return 0;
+}
+
+static const struct file_operations ntsync_obj_fops = {
+ .owner = THIS_MODULE,
+ .release = ntsync_obj_release,
+ .llseek = no_llseek,
+};
+
+static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
+ enum ntsync_type type)
+{
+ struct ntsync_obj *obj;
+
+ obj = kzalloc(sizeof(*obj), GFP_KERNEL);
+ if (!obj)
+ return NULL;
+ obj->type = type;
+ obj->dev = dev;
+ get_file(dev->file);
+
+ return obj;
+}
+
+static int ntsync_obj_get_fd(struct ntsync_obj *obj)
+{
+ struct file *file;
+ int fd;
+
+ fd = get_unused_fd_flags(O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+ file = anon_inode_getfile("ntsync", &ntsync_obj_fops, obj, O_RDWR);
+ if (IS_ERR(file)) {
+ put_unused_fd(fd);
+ return PTR_ERR(file);
+ }
+ obj->file = file;
+ fd_install(fd, file);
+
+ return fd;
+}
+
+static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ int fd;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (args.count > args.max)
+ return -EINVAL;
+
+ sem = ntsync_alloc_obj(dev, NTSYNC_TYPE_SEM);
+ if (!sem)
+ return -ENOMEM;
+ sem->u.sem.count = args.count;
+ sem->u.sem.max = args.max;
+ fd = ntsync_obj_get_fd(sem);
+ if (fd < 0) {
+ kfree(sem);
+ return fd;
+ }
+
+ return put_user(fd, &user_args->sem);
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ file->private_data = dev;
+ dev->file = file;
return nonseekable_open(inode, file);
}
static int ntsync_char_release(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev = file->private_data;
+
+ kfree(dev);
+
return 0;
}
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
+ struct ntsync_device *dev = file->private_data;
+ void __user *argp = (void __user *)parm;
+
switch (cmd) {
+ case NTSYNC_IOC_CREATE_SEM:
+ return ntsync_create_sem(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
new file mode 100644
index 000000000000..f38818e7759d
--- /dev/null
+++ b/include/uapi/linux/ntsync.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Kernel support for NT synchronization primitive emulation
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#ifndef __LINUX_NTSYNC_H
+#define __LINUX_NTSYNC_H
+
+#include <linux/types.h>
+
+struct ntsync_sem_args {
+ __u32 sem;
+ __u32 count;
+ __u32 max;
+};
+
+#define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+
+#endif
--
2.43.0

145
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0002.patch Normal file
View File

@ -0,0 +1,145 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 3/29] ntsync: Introduce NTSYNC_IOC_SEM_POST.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:30 -0600
Message-Id: <20240131021356.10322-4-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtReleaseSemaphore().
This increases the semaphore's internal counter by the given value, and returns
the previous value. If the counter would overflow the defined maximum, the
function instead fails and returns -EOVERFLOW.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 68 +++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 2 ++
2 files changed, 67 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 3ad86d98b82d..1af38969f9a2 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -20,23 +20,68 @@ enum ntsync_type {
};
struct ntsync_obj {
+ spinlock_t lock;
+
enum ntsync_type type;
+ struct file *file;
+ struct ntsync_device *dev;
+
+ /* The following fields are protected by the object lock. */
union {
struct {
__u32 count;
__u32 max;
} sem;
} u;
-
- struct file *file;
- struct ntsync_device *dev;
};
struct ntsync_device {
struct file *file;
};
+/*
+ * Actually change the semaphore state, returning -EOVERFLOW if it is made
+ * invalid.
+ */
+static int post_sem_state(struct ntsync_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 ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
+{
+ __u32 __user *user_args = argp;
+ __u32 prev_count;
+ __u32 args;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (sem->type != NTSYNC_TYPE_SEM)
+ return -EINVAL;
+
+ spin_lock(&sem->lock);
+
+ prev_count = sem->u.sem.count;
+ ret = post_sem_state(sem, args);
+
+ spin_unlock(&sem->lock);
+
+ if (!ret && put_user(prev_count, user_args))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -47,9 +92,25 @@ static int ntsync_obj_release(struct inode *inode, struct file *file)
return 0;
}
+static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
+ unsigned long parm)
+{
+ struct ntsync_obj *obj = file->private_data;
+ void __user *argp = (void __user *)parm;
+
+ switch (cmd) {
+ case NTSYNC_IOC_SEM_POST:
+ return ntsync_sem_post(obj, argp);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
static const struct file_operations ntsync_obj_fops = {
.owner = THIS_MODULE,
.release = ntsync_obj_release,
+ .unlocked_ioctl = ntsync_obj_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
.llseek = no_llseek,
};
@@ -64,6 +125,7 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
obj->type = type;
obj->dev = dev;
get_file(dev->file);
+ spin_lock_init(&obj->lock);
return obj;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index f38818e7759d..878ec4f0f2e8 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -18,4 +18,6 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
+
#endif
--
2.43.0

189
linux-clang/linux6.7-zen/patches/0004-[PATCH_RFC_5_9]_ntsync:_Introduce_NTSYNC_IOC_WAIT_ANY..patch → linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0003.patch
View File

@ -1,31 +1,52 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 4/29] ntsync: Introduce NTSYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:31 -0600
Message-Id: <20240131021356.10322-5-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to part of the functionality of the NT syscall This corresponds to part of the functionality of the NT syscall
NtWaitForMultipleObjects(). Specifically, it implements the behaviour where NtWaitForMultipleObjects(). Specifically, it implements the behaviour where
the third argument (wait_any) is TRUE, and it does not handle alertable waits. the third argument (wait_any) is TRUE, and it does not handle alertable waits.
Those features have been split out into separate patches to ease review. Those features have been split out into separate patches to ease review.
NTSYNC_IOC_WAIT_ANY is a vectored wait function similar to poll(). Unlike
poll(), it "consumes" objects when they are signaled. For semaphores, this means
decreasing one from the internal counter. At most one object can be consumed by
this function.
Up to 64 objects can be waited on at once. As soon as one is signaled, the
object with the lowest index is consumed, and that index is returned via the
"index" field.
A timeout is supported. The timeout is passed as a u64 nanosecond value, which
represents absolute time measured against the MONOTONIC clock. If U64_MAX is
passed, the ioctl waits indefinitely.
This ioctl validates that all objects belong to the relevant device. This is not
necessary for any technical reason related to NTSYNC_IOC_WAIT_ANY, but will be
necessary for NTSYNC_IOC_WAIT_ALL introduced in the following patch.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 229 ++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 232 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 13 ++ include/uapi/linux/ntsync.h | 12 ++
2 files changed, 242 insertions(+) 2 files changed, 244 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index d1c91c2a4f1a..2e8d3c2d51a4 100644 index 1af38969f9a2..0a0ab755d57f 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -23,6 +23,8 @@ struct ntsync_obj { @@ -34,12 +34,55 @@ struct ntsync_obj {
struct kref refcount; __u32 max;
spinlock_t lock; } sem;
+ struct list_head any_waiters;
+
enum ntsync_type type;
/* The following fields are protected by the object lock. */
@@ -34,6 +36,28 @@ struct ntsync_obj {
} u; } u;
}; +
+ struct list_head any_waiters;
+};
+
+struct ntsync_q_entry { +struct ntsync_q_entry {
+ struct list_head node; + struct list_head node;
+ struct ntsync_q *q; + struct ntsync_q *q;
@ -46,18 +67,12 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ __u32 count; + __u32 count;
+ struct ntsync_q_entry entries[]; + struct ntsync_q_entry entries[];
+};
+
struct ntsync_device {
struct xarray objects;
}; };
@@ -109,6 +133,26 @@ static void init_obj(struct ntsync_obj *obj)
{ struct ntsync_device {
kref_init(&obj->refcount); struct file *file;
spin_lock_init(&obj->lock); };
+ INIT_LIST_HEAD(&obj->any_waiters);
+}
+
+static void try_wake_any_sem(struct ntsync_obj *sem) +static void try_wake_any_sem(struct ntsync_obj *sem)
+{ +{
+ struct ntsync_q_entry *entry; + struct ntsync_q_entry *entry;
@ -75,22 +90,58 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ wake_up_process(q->task); + wake_up_process(q->task);
+ } + }
+ } + }
} +}
+
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) /*
@@ -194,6 +238,8 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) * Actually change the semaphore state, returning -EOVERFLOW if it is made
* invalid.
@@ -73,6 +116,8 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
prev_count = sem->u.sem.count; prev_count = sem->u.sem.count;
ret = put_sem_state(sem, args.count); ret = post_sem_state(sem, args);
+ if (!ret) + if (!ret)
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
spin_unlock(&sem->lock); spin_unlock(&sem->lock);
@@ -205,6 +251,187 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) @@ -126,6 +171,7 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
return ret; obj->dev = dev;
get_file(dev->file);
spin_lock_init(&obj->lock);
+ INIT_LIST_HEAD(&obj->any_waiters);
return obj;
}
@@ -176,6 +222,190 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
return put_user(fd, &user_args->sem);
} }
+static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
+{
+ struct file *file = fget(fd);
+ struct ntsync_obj *obj;
+
+ if (file->f_op != &ntsync_obj_fops)
+ {
+ fput(file);
+ return NULL;
+ }
+
+ obj = file->private_data;
+ if (obj->dev != dev)
+ {
+ fput(file);
+ return NULL;
+ }
+
+ return obj;
+}
+
+static void put_obj(struct ntsync_obj *obj)
+{
+ fput(obj->file);
+}
+
+static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout) +static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
+{ +{
+ int ret = 0; + int ret = 0;
@ -115,16 +166,14 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+/* +/*
+ * Allocate and initialize the ntsync_q structure, but do not queue us yet. + * Allocate and initialize the ntsync_q structure, but do not queue us yet.
+ * Also, calculate the relative timeout.
+ */ + */
+static int setup_wait(struct ntsync_device *dev, +static int setup_wait(struct ntsync_device *dev,
+ const struct ntsync_wait_args *args, + const struct ntsync_wait_args *args,
+ ktime_t *ret_timeout, struct ntsync_q **ret_q) + struct ntsync_q **ret_q)
+{ +{
+ const __u32 count = args->count; + const __u32 count = args->count;
+ int fds[NTSYNC_MAX_WAIT_COUNT];
+ struct ntsync_q *q; + struct ntsync_q *q;
+ ktime_t timeout = 0;
+ __u32 *ids;
+ __u32 i, j; + __u32 i, j;
+ +
+ if (!args->owner || args->pad) + if (!args->owner || args->pad)
@ -133,31 +182,13 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ if (args->count > NTSYNC_MAX_WAIT_COUNT) + if (args->count > NTSYNC_MAX_WAIT_COUNT)
+ return -EINVAL; + return -EINVAL;
+ +
+ if (args->timeout) { + if (copy_from_user(fds, u64_to_user_ptr(args->objs),
+ struct timespec64 to; + array_size(count, sizeof(*fds))))
+
+ if (get_timespec64(&to, u64_to_user_ptr(args->timeout)))
+ return -EFAULT; + return -EFAULT;
+ if (!timespec64_valid(&to))
+ return -EINVAL;
+
+ timeout = timespec64_to_ns(&to);
+ }
+
+ ids = kmalloc_array(count, sizeof(*ids), GFP_KERNEL);
+ if (!ids)
+ return -ENOMEM;
+ if (copy_from_user(ids, u64_to_user_ptr(args->objs),
+ array_size(count, sizeof(*ids)))) {
+ kfree(ids);
+ return -EFAULT;
+ }
+ +
+ q = kmalloc(struct_size(q, entries, count), GFP_KERNEL); + q = kmalloc(struct_size(q, entries, count), GFP_KERNEL);
+ if (!q) { + if (!q)
+ kfree(ids);
+ return -ENOMEM; + return -ENOMEM;
+ }
+ q->task = current; + q->task = current;
+ q->owner = args->owner; + q->owner = args->owner;
+ atomic_set(&q->signaled, -1); + atomic_set(&q->signaled, -1);
@ -165,7 +196,7 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ for (i = 0; i < count; i++) { + for (i = 0; i < count; i++) {
+ struct ntsync_q_entry *entry = &q->entries[i]; + struct ntsync_q_entry *entry = &q->entries[i];
+ struct ntsync_obj *obj = get_obj(dev, ids[i]); + struct ntsync_obj *obj = get_obj(dev, fds[i]);
+ +
+ if (!obj) + if (!obj)
+ goto err; + goto err;
@ -175,16 +206,12 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ entry->index = i; + entry->index = i;
+ } + }
+ +
+ kfree(ids);
+
+ *ret_q = q; + *ret_q = q;
+ *ret_timeout = timeout;
+ return 0; + return 0;
+ +
+err: +err:
+ for (j = 0; j < i; j++) + for (j = 0; j < i; j++)
+ put_obj(q->entries[j].obj); + put_obj(q->entries[j].obj);
+ kfree(ids);
+ kfree(q); + kfree(q);
+ return -EINVAL; + return -EINVAL;
+} +}
@ -210,7 +237,7 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
+ +
+ ret = setup_wait(dev, &args, &timeout, &q); + ret = setup_wait(dev, &args, &q);
+ if (ret < 0) + if (ret < 0)
+ return ret; + return ret;
+ +
@ -240,7 +267,8 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ /* sleep */ + /* sleep */
+ +
+ ret = ntsync_schedule(q, args.timeout ? &timeout : NULL); + timeout = ns_to_ktime(args.timeout);
+ ret = ntsync_schedule(q, args.timeout == U64_MAX ? NULL : &timeout);
+ +
+ /* and finally, unqueue */ + /* and finally, unqueue */
+ +
@ -272,23 +300,23 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ return ret; + return ret;
+} +}
+ +
static long ntsync_char_ioctl(struct file *file, unsigned int cmd, static int ntsync_char_open(struct inode *inode, struct file *file)
unsigned long parm)
{ {
@@ -218,6 +445,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, struct ntsync_device *dev;
return ntsync_delete(dev, argp); @@ -207,6 +437,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
case NTSYNC_IOC_PUT_SEM: switch (cmd) {
return ntsync_put_sem(dev, argp); case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_WAIT_ANY: + case NTSYNC_IOC_WAIT_ANY:
+ return ntsync_wait_any(dev, argp); + return ntsync_wait_any(dev, argp);
default: default:
return -ENOIOCTLCMD; return -ENOIOCTLCMD;
} }
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 8c610d65f8ef..10f07da7864e 100644 index 878ec4f0f2e8..9cd1dd05d971 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -16,6 +16,17 @@ struct ntsync_sem_args { @@ -16,7 +16,19 @@ struct ntsync_sem_args {
__u32 max; __u32 max;
}; };
@ -303,16 +331,11 @@ index 8c610d65f8ef..10f07da7864e 100644
+ +
+#define NTSYNC_MAX_WAIT_COUNT 64 +#define NTSYNC_MAX_WAIT_COUNT 64
+ +
#define NTSYNC_IOC_BASE 0xf7 #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+#define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \ #define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
@@ -23,5 +34,7 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
#define NTSYNC_IOC_PUT_SEM _IOWR(NTSYNC_IOC_BASE, 2, \
struct ntsync_sem_args)
+#define NTSYNC_IOC_WAIT_ANY _IOWR(NTSYNC_IOC_BASE, 3, \
+ struct ntsync_wait_args)
#endif
-- --
2.43.0 2.43.0

170
linux-clang/linux6.7-zen/patches/0005-[PATCH_RFC_6_9]_ntsync:_Introduce_NTSYNC_IOC_WAIT_ALL..patch → linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0004.patch
View File

@ -1,21 +1,29 @@
This corresponds to part of the functionality of the NT syscall From git@z Thu Jan 1 00:00:00 1970
NtWaitForMultipleObjects(). Specifically, it implements the behaviour where Subject: [PATCH RFC v2 5/29] ntsync: Introduce NTSYNC_IOC_WAIT_ALL.
the third argument (wait_any) is FALSE, and it does not yet handle alertable From: Elizabeth Figura <zfigura@codeweavers.com>
waits. Date: Tue, 30 Jan 2024 20:13:32 -0600
Message-Id: <20240131021356.10322-6-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This is similar to NTSYNC_IOC_WAIT_ANY, but waits until all of the objects are
simultaneously signaled, and then acquires all of them as a single atomic
operation.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 241 ++++++++++++++++++++++++++++++++++-- drivers/misc/ntsync.c | 244 ++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 2 + include/uapi/linux/ntsync.h | 1 +
2 files changed, 235 insertions(+), 8 deletions(-) 2 files changed, 237 insertions(+), 8 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 2e8d3c2d51a4..2685363fae9e 100644 index 0a0ab755d57f..b86d62094344 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -23,7 +23,34 @@ struct ntsync_obj { @@ -35,7 +35,34 @@ struct ntsync_obj {
struct kref refcount; } sem;
spinlock_t lock; } u;
+ /* + /*
+ * any_waiters is protected by the object lock, but all_waiters is + * any_waiters is protected by the object lock, but all_waiters is
@ -33,22 +41,22 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ * lock all of the objects, and that means grabbing the wait_all_lock + * lock all of the objects, and that means grabbing the wait_all_lock
+ * below (and, due to lock ordering rules, before locking this object). + * below (and, due to lock ordering rules, before locking this object).
+ * However, wait-all is a rare operation, and grabbing the wait-all + * However, wait-all is a rare operation, and grabbing the wait-all
+ * lock for every wake would create unnecessary contention. Therefore we + * lock for every wake would create unnecessary contention.
+ * first check whether all_hint is zero, and, if it is, we skip trying + * Therefore we first check whether all_hint is zero, and, if it is,
+ * to wake "all" waiters. + * we skip trying to wake "all" waiters.
+ * + *
+ * This hint isn't protected by any lock. It might change during the + * This hint 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 + * course of a wake, but there's no meaningful race there; it's only a
+ * hint. + * hint.
+ * + *
+ * Since wait requests must originate from user-space threads, we're + * Since wait requests must originate from user-space threads, we're
+ * limited here by PID_MAX_LIMIT, so there's no risk of saturation. + * limited here by PID_MAX_LIMIT, so there's no risk of overflow.
+ */ + */
+ atomic_t all_hint; + atomic_t all_hint;
};
enum ntsync_type type; struct ntsync_q_entry {
@@ -56,14 +83,99 @@ struct ntsync_q {
@@ -54,11 +81,25 @@ struct ntsync_q {
*/ */
atomic_t signaled; atomic_t signaled;
@ -60,9 +68,9 @@ index 2e8d3c2d51a4..2685363fae9e 100644
struct ntsync_device { struct ntsync_device {
+ /* + /*
+ * Wait-all operations must atomically grab all objects, and be totally + * Wait-all operations must atomically grab all objects, and be totally
+ * ordered with respect to each other and wait-any operations. If one + * ordered with respect to each other and wait-any operations.
+ * thread is trying to acquire several objects, another thread cannot + * If one thread is trying to acquire several objects, another thread
+ * touch the object at the same time. + * cannot touch the object at the same time.
+ * + *
+ * We achieve this by grabbing multiple object locks 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, + * However, this creates a lock ordering problem. To solve that problem,
@ -71,28 +79,9 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ */ + */
+ spinlock_t wait_all_lock; + spinlock_t wait_all_lock;
+ +
struct xarray objects; struct file *file;
}; };
@@ -107,6 +148,8 @@ static int ntsync_char_open(struct inode *inode, struct file *file)
if (!dev)
return -ENOMEM;
+ spin_lock_init(&dev->wait_all_lock);
+
xa_init_flags(&dev->objects, XA_FLAGS_ALLOC);
file->private_data = dev;
@@ -132,8 +175,81 @@ static int ntsync_char_release(struct inode *inode, struct file *file)
static void init_obj(struct ntsync_obj *obj)
{
kref_init(&obj->refcount);
+ atomic_set(&obj->all_hint, 0);
spin_lock_init(&obj->lock);
INIT_LIST_HEAD(&obj->any_waiters);
+ INIT_LIST_HEAD(&obj->all_waiters);
+}
+
+static bool is_signaled(struct ntsync_obj *obj, __u32 owner) +static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
+{ +{
+ lockdep_assert_held(&obj->lock); + lockdep_assert_held(&obj->lock);
@ -162,11 +151,21 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ list_for_each_entry(entry, &obj->all_waiters, node) + list_for_each_entry(entry, &obj->all_waiters, node)
+ try_wake_all(dev, entry->q, obj); + try_wake_all(dev, entry->q, obj);
} +}
+
static void try_wake_any_sem(struct ntsync_obj *sem) static void try_wake_any_sem(struct ntsync_obj *sem)
@@ -234,14 +350,29 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) {
if (!sem) struct ntsync_q_entry *entry;
@@ -101,6 +213,7 @@ static int post_sem_state(struct ntsync_obj *sem, __u32 count)
static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
{
+ struct ntsync_device *dev = sem->dev;
__u32 __user *user_args = argp;
__u32 prev_count;
__u32 args;
@@ -112,14 +225,29 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
if (sem->type != NTSYNC_TYPE_SEM)
return -EINVAL; return -EINVAL;
- spin_lock(&sem->lock); - spin_lock(&sem->lock);
@ -175,11 +174,11 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ spin_lock_nest_lock(&sem->lock, &dev->wait_all_lock); + spin_lock_nest_lock(&sem->lock, &dev->wait_all_lock);
- prev_count = sem->u.sem.count; - prev_count = sem->u.sem.count;
- ret = put_sem_state(sem, args.count); - ret = post_sem_state(sem, args);
- if (!ret) - if (!ret)
- try_wake_any_sem(sem); - try_wake_any_sem(sem);
+ prev_count = sem->u.sem.count; + prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count); + ret = post_sem_state(sem, args);
+ if (!ret) { + if (!ret) {
+ try_wake_all_obj(dev, sem); + try_wake_all_obj(dev, sem);
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
@ -192,25 +191,34 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ spin_lock(&sem->lock); + spin_lock(&sem->lock);
+ +
+ prev_count = sem->u.sem.count; + prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count); + ret = post_sem_state(sem, args);
+ if (!ret) + if (!ret)
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
+ +
+ spin_unlock(&sem->lock); + spin_unlock(&sem->lock);
+ } + }
put_obj(sem); if (!ret && put_user(prev_count, user_args))
ret = -EFAULT;
@@ -172,6 +300,8 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
get_file(dev->file);
spin_lock_init(&obj->lock);
INIT_LIST_HEAD(&obj->any_waiters);
+ INIT_LIST_HEAD(&obj->all_waiters);
+ atomic_set(&obj->all_hint, 0);
@@ -278,7 +409,7 @@ static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout) return obj;
* Also, calculate the relative timeout. }
@@ -274,7 +404,7 @@ static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
* Allocate and initialize the ntsync_q structure, but do not queue us yet.
*/ */
static int setup_wait(struct ntsync_device *dev, static int setup_wait(struct ntsync_device *dev,
- const struct ntsync_wait_args *args, - const struct ntsync_wait_args *args,
+ const struct ntsync_wait_args *args, bool all, + const struct ntsync_wait_args *args, bool all,
ktime_t *ret_timeout, struct ntsync_q **ret_q) struct ntsync_q **ret_q)
{ {
const __u32 count = args->count; const __u32 count = args->count;
@@ -321,6 +452,7 @@ static int setup_wait(struct ntsync_device *dev, @@ -298,6 +428,7 @@ static int setup_wait(struct ntsync_device *dev,
q->task = current; q->task = current;
q->owner = args->owner; q->owner = args->owner;
atomic_set(&q->signaled, -1); atomic_set(&q->signaled, -1);
@ -218,7 +226,7 @@ index 2e8d3c2d51a4..2685363fae9e 100644
q->count = count; q->count = count;
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
@@ -330,6 +462,16 @@ static int setup_wait(struct ntsync_device *dev, @@ -307,6 +438,16 @@ static int setup_wait(struct ntsync_device *dev,
if (!obj) if (!obj)
goto err; goto err;
@ -235,16 +243,16 @@ index 2e8d3c2d51a4..2685363fae9e 100644
entry->obj = obj; entry->obj = obj;
entry->q = q; entry->q = q;
entry->index = i; entry->index = i;
@@ -370,7 +512,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp) @@ -343,7 +484,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
if (copy_from_user(&args, argp, sizeof(args))) if (copy_from_user(&args, argp, sizeof(args)))
return -EFAULT; return -EFAULT;
- ret = setup_wait(dev, &args, &timeout, &q); - ret = setup_wait(dev, &args, &q);
+ ret = setup_wait(dev, &args, false, &timeout, &q); + ret = setup_wait(dev, &args, false, &q);
if (ret < 0) if (ret < 0)
return ret; return ret;
@@ -432,6 +574,87 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp) @@ -406,6 +547,89 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
return ret; return ret;
} }
@ -260,7 +268,7 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
+ +
+ ret = setup_wait(dev, &args, true, &timeout, &q); + ret = setup_wait(dev, &args, true, &q);
+ if (ret < 0) + if (ret < 0)
+ return ret; + return ret;
+ +
@ -276,7 +284,8 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ /* + /*
+ * obj->all_waiters is protected by dev->wait_all_lock rather + * obj->all_waiters is protected by dev->wait_all_lock rather
+ * than obj->lock, so there is no need to acquire it here. + * than obj->lock, so there is no need to acquire obj->lock
+ * here.
+ */ + */
+ list_add_tail(&entry->node, &obj->all_waiters); + list_add_tail(&entry->node, &obj->all_waiters);
+ } + }
@ -289,7 +298,8 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ /* sleep */ + /* sleep */
+ +
+ ret = ntsync_schedule(q, args.timeout ? &timeout : NULL); + timeout = ns_to_ktime(args.timeout);
+ ret = ntsync_schedule(q, args.timeout == U64_MAX ? NULL : &timeout);
+ +
+ /* and finally, unqueue */ + /* and finally, unqueue */
+ +
@ -329,29 +339,39 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ return ret; + return ret;
+} +}
+ +
static long ntsync_char_ioctl(struct file *file, unsigned int cmd, static int ntsync_char_open(struct inode *inode, struct file *file)
unsigned long parm)
{ {
@@ -445,6 +668,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, struct ntsync_device *dev;
return ntsync_delete(dev, argp); @@ -414,6 +638,8 @@ static int ntsync_char_open(struct inode *inode, struct file *file)
case NTSYNC_IOC_PUT_SEM: if (!dev)
return ntsync_put_sem(dev, argp); return -ENOMEM;
+ spin_lock_init(&dev->wait_all_lock);
+
file->private_data = dev;
dev->file = file;
return nonseekable_open(inode, file);
@@ -437,6 +663,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_WAIT_ALL: + case NTSYNC_IOC_WAIT_ALL:
+ return ntsync_wait_all(dev, argp); + return ntsync_wait_all(dev, argp);
case NTSYNC_IOC_WAIT_ANY: case NTSYNC_IOC_WAIT_ANY:
return ntsync_wait_any(dev, argp); return ntsync_wait_any(dev, argp);
default: default:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 10f07da7864e..a5bed5a39b21 100644 index 9cd1dd05d971..524404f6aceb 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -36,5 +36,7 @@ struct ntsync_wait_args { @@ -29,6 +29,7 @@ struct ntsync_wait_args {
struct ntsync_sem_args)
#define NTSYNC_IOC_WAIT_ANY _IOWR(NTSYNC_IOC_BASE, 3, \ #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
struct ntsync_wait_args) #define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
+#define NTSYNC_IOC_WAIT_ALL _IOWR(NTSYNC_IOC_BASE, 4, \ +#define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
+ struct ntsync_wait_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#endif
-- --
2.43.0 2.43.0

93
linux-clang/linux6.7-zen/patches/0006-[PATCH_RFC_7_9]_ntsync:_Introduce_NTSYNC_IOC_CREATE_MUTEX..patch → linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0005.patch
View File

@ -1,16 +1,35 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 6/29] ntsync: Introduce NTSYNC_IOC_CREATE_MUTEX.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:33 -0600
Message-Id: <20240131021356.10322-7-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtCreateMutant(). This corresponds to the NT syscall NtCreateMutant().
An NT mutex is recursive, with a 32-bit recursion counter. When acquired via
NtWaitForMultipleObjects(), the recursion counter is incremented by one.
The OS records the thread which acquired it. However, in order to keep this
driver self-contained, the owning thread ID is managed by user-space, and passed
as a parameter to all relevant ioctls.
The initial owner and recursion count, if any, are specified when the mutex is
created.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 72 +++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 67 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 8 +++++ include/uapi/linux/ntsync.h | 7 ++++
2 files changed, 80 insertions(+) 2 files changed, 74 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 2685363fae9e..d48f2ef41341 100644 index b86d62094344..484219a266ae 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -16,6 +16,7 @@ @@ -17,6 +17,7 @@
enum ntsync_type { enum ntsync_type {
NTSYNC_TYPE_SEM, NTSYNC_TYPE_SEM,
@ -18,7 +37,7 @@ index 2685363fae9e..d48f2ef41341 100644
}; };
struct ntsync_obj { struct ntsync_obj {
@@ -60,6 +61,10 @@ struct ntsync_obj { @@ -33,6 +34,10 @@ struct ntsync_obj {
__u32 count; __u32 count;
__u32 max; __u32 max;
} sem; } sem;
@ -27,9 +46,9 @@ index 2685363fae9e..d48f2ef41341 100644
+ __u32 owner; + __u32 owner;
+ } mutex; + } mutex;
} u; } u;
};
@@ -188,6 +193,10 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner) /*
@@ -112,6 +117,10 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
switch (obj->type) { switch (obj->type) {
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
return !!obj->u.sem.count; return !!obj->u.sem.count;
@ -40,7 +59,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
WARN(1, "bad object type %#x\n", obj->type); WARN(1, "bad object type %#x\n", obj->type);
@@ -230,6 +239,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q, @@ -154,6 +163,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
obj->u.sem.count--; obj->u.sem.count--;
break; break;
@ -51,7 +70,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
} }
wake_up_process(q->task); wake_up_process(q->task);
@@ -271,6 +284,28 @@ static void try_wake_any_sem(struct ntsync_obj *sem) @@ -195,6 +208,28 @@ static void try_wake_any_sem(struct ntsync_obj *sem)
} }
} }
@ -77,11 +96,11 @@ index 2685363fae9e..d48f2ef41341 100644
+ } + }
+} +}
+ +
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) /*
{ * Actually change the semaphore state, returning -EOVERFLOW if it is made
struct ntsync_sem_args __user *user_args = argp; * invalid.
@@ -303,6 +338,38 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) @@ -352,6 +387,33 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
return put_user(id, &user_args->sem); return put_user(fd, &user_args->sem);
} }
+static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp) +static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp)
@ -89,8 +108,7 @@ index 2685363fae9e..d48f2ef41341 100644
+ struct ntsync_mutex_args __user *user_args = argp; + struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args; + struct ntsync_mutex_args args;
+ struct ntsync_obj *mutex; + struct ntsync_obj *mutex;
+ __u32 id; + int fd;
+ int ret;
+ +
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
@ -98,28 +116,24 @@ index 2685363fae9e..d48f2ef41341 100644
+ if (!args.owner != !args.count) + if (!args.owner != !args.count)
+ return -EINVAL; + return -EINVAL;
+ +
+ mutex = kzalloc(sizeof(*mutex), GFP_KERNEL); + mutex = ntsync_alloc_obj(dev, NTSYNC_TYPE_MUTEX);
+ if (!mutex) + if (!mutex)
+ return -ENOMEM; + return -ENOMEM;
+
+ init_obj(mutex);
+ mutex->type = NTSYNC_TYPE_MUTEX;
+ mutex->u.mutex.count = args.count; + mutex->u.mutex.count = args.count;
+ mutex->u.mutex.owner = args.owner; + mutex->u.mutex.owner = args.owner;
+ + fd = ntsync_obj_get_fd(mutex);
+ ret = xa_alloc(&dev->objects, &id, mutex, xa_limit_32b, GFP_KERNEL); + if (fd < 0) {
+ if (ret < 0) {
+ kfree(mutex); + kfree(mutex);
+ return ret; + return fd;
+ } + }
+ +
+ return put_user(id, &user_args->mutex); + return put_user(fd, &user_args->mutex);
+} +}
+ +
static int ntsync_delete(struct ntsync_device *dev, void __user *argp) static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
{ {
struct ntsync_obj *obj; struct file *file = fget(fd);
@@ -497,6 +564,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj) @@ -469,6 +531,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj)
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
try_wake_any_sem(obj); try_wake_any_sem(obj);
break; break;
@ -129,7 +143,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
} }
@@ -662,6 +732,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, @@ -661,6 +726,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
void __user *argp = (void __user *)parm; void __user *argp = (void __user *)parm;
switch (cmd) { switch (cmd) {
@ -137,9 +151,9 @@ index 2685363fae9e..d48f2ef41341 100644
+ return ntsync_create_mutex(dev, argp); + return ntsync_create_mutex(dev, argp);
case NTSYNC_IOC_CREATE_SEM: case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp); return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE: case NTSYNC_IOC_WAIT_ALL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a5bed5a39b21..26d1b3d4847f 100644 index 524404f6aceb..d68f24fd75a2 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -16,6 +16,12 @@ struct ntsync_sem_args { @@ -16,6 +16,12 @@ struct ntsync_sem_args {
@ -155,13 +169,14 @@ index a5bed5a39b21..26d1b3d4847f 100644
struct ntsync_wait_args { struct ntsync_wait_args {
__u64 timeout; __u64 timeout;
__u64 objs; __u64 objs;
@@ -38,5 +44,7 @@ struct ntsync_wait_args { @@ -30,6 +36,7 @@ struct ntsync_wait_args {
struct ntsync_wait_args) #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
#define NTSYNC_IOC_WAIT_ALL _IOWR(NTSYNC_IOC_BASE, 4, \ #define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
struct ntsync_wait_args) #define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
+#define NTSYNC_IOC_CREATE_MUTEX _IOWR(NTSYNC_IOC_BASE, 5, \ +#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
+ struct ntsync_mutex_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#endif
-- --
2.43.0 2.43.0

117
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0006.patch Normal file
View File

@ -0,0 +1,117 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 7/29] ntsync: Introduce NTSYNC_IOC_MUTEX_UNLOCK.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:34 -0600
Message-Id: <20240131021356.10322-8-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtReleaseMutant().
This syscall decrements the mutex's recursion count by one, and returns the
previous value. If the mutex is not owned by the given owner ID, the function
instead fails and returns -EPERM.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 64 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 65 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 484219a266ae..1770ec4008af 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -290,6 +290,68 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state, returning -EPERM if not the owner.
+ */
+static int unlock_mutex_state(struct ntsync_obj *mutex,
+ const struct ntsync_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 ntsync_mutex_unlock(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_device *dev = mutex->dev;
+ struct ntsync_mutex_args args;
+ __u32 prev_count;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+ if (!args.owner)
+ return -EINVAL;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_lock);
+
+ prev_count = mutex->u.mutex.count;
+ ret = unlock_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 = unlock_mutex_state(mutex, &args);
+ if (!ret)
+ try_wake_any_mutex(mutex);
+
+ spin_unlock(&mutex->lock);
+ }
+
+ if (!ret && put_user(prev_count, &user_args->count))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -309,6 +371,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_SEM_POST:
return ntsync_sem_post(obj, argp);
+ case NTSYNC_IOC_MUTEX_UNLOCK:
+ return ntsync_mutex_unlock(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index d68f24fd75a2..a3f5f4f13798 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -39,5 +39,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
+#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#endif
--
2.43.0

176
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0007.patch Normal file
View File

@ -0,0 +1,176 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 8/29] ntsync: Introduce NTSYNC_IOC_MUTEX_KILL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:35 -0600
Message-Id: <20240131021356.10322-9-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This does not correspond to any NT syscall. Rather, when a thread dies, it
should be called by the NT emulator for each mutex.
NT mutexes are robust (in the pthread sense). When an NT thread dies, any
mutexes it owned are immediately released. Acquisition of those mutexes by other
threads will return a special value indicating that the mutex was abandoned,
like EOWNERDEAD returned from pthread_mutex_lock(), and EOWNERDEAD is indeed
used here for that purpose.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 71 +++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 1 +
2 files changed, 70 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 1770ec4008af..aadf01c65ca0 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -37,6 +37,7 @@ struct ntsync_obj {
struct {
__u32 count;
__u32 owner;
+ bool ownerdead;
} mutex;
} u;
@@ -89,6 +90,7 @@ struct ntsync_q {
atomic_t signaled;
bool all;
+ bool ownerdead;
__u32 count;
struct ntsync_q_entry entries[];
};
@@ -164,6 +166,9 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.sem.count--;
break;
case NTSYNC_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;
@@ -223,6 +228,9 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
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);
@@ -352,6 +360,62 @@ static int ntsync_mutex_unlock(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state to mark its owner as dead,
+ * returning -EPERM if not the owner.
+ */
+static int kill_mutex_state(struct ntsync_obj *mutex, __u32 owner)
+{
+ lockdep_assert_held(&mutex->lock);
+
+ if (mutex->u.mutex.owner != owner)
+ return -EPERM;
+
+ mutex->u.mutex.ownerdead = true;
+ mutex->u.mutex.owner = 0;
+ mutex->u.mutex.count = 0;
+ return 0;
+}
+
+static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_device *dev = mutex->dev;
+ __u32 owner;
+ int ret;
+
+ if (get_user(owner, (__u32 __user *)argp))
+ return -EFAULT;
+ if (!owner)
+ return -EINVAL;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_lock);
+
+ ret = kill_mutex_state(mutex, owner);
+ 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);
+
+ ret = kill_mutex_state(mutex, owner);
+ if (!ret)
+ try_wake_any_mutex(mutex);
+
+ spin_unlock(&mutex->lock);
+ }
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -373,6 +437,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_sem_post(obj, argp);
case NTSYNC_IOC_MUTEX_UNLOCK:
return ntsync_mutex_unlock(obj, argp);
+ case NTSYNC_IOC_MUTEX_KILL:
+ return ntsync_mutex_kill(obj, argp);
default:
return -ENOIOCTLCMD;
}
@@ -555,6 +621,7 @@ static int setup_wait(struct ntsync_device *dev,
q->owner = args->owner;
atomic_set(&q->signaled, -1);
q->all = all;
+ q->ownerdead = false;
q->count = count;
for (i = 0; i < count; i++) {
@@ -664,7 +731,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -747,7 +814,7 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a3f5f4f13798..3861397c6c2f 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -40,5 +40,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
+#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#endif
--
2.43.0

175
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0008.patch Normal file
View File

@ -0,0 +1,175 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 9/29] ntsync: Introduce NTSYNC_IOC_CREATE_EVENT.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:36 -0600
Message-Id: <20240131021356.10322-10-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This correspond to the NT syscall NtCreateEvent().
An NT event holds a single bit of state denoting whether it is signaled or
unsignaled.
There are two types of events: manual-reset and automatic-reset. When an
automatic-reset event is acquired via a wait function, its state is reset to
unsignaled. Manual-reset events are not affected by wait functions.
Whether the event is manual-reset, and its initial state, are specified at
creation time.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 60 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 7 +++++
2 files changed, 67 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index aadf01c65ca0..c719ddd9f6d7 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -18,6 +18,7 @@
enum ntsync_type {
NTSYNC_TYPE_SEM,
NTSYNC_TYPE_MUTEX,
+ NTSYNC_TYPE_EVENT,
};
struct ntsync_obj {
@@ -39,6 +40,10 @@ struct ntsync_obj {
__u32 owner;
bool ownerdead;
} mutex;
+ struct {
+ bool manual;
+ bool signaled;
+ } event;
} u;
/*
@@ -123,6 +128,8 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
if (obj->u.mutex.owner && obj->u.mutex.owner != owner)
return false;
return obj->u.mutex.count < UINT_MAX;
+ case NTSYNC_TYPE_EVENT:
+ return obj->u.event.signaled;
}
WARN(1, "bad object type %#x\n", obj->type);
@@ -172,6 +179,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.mutex.count++;
obj->u.mutex.owner = q->owner;
break;
+ case NTSYNC_TYPE_EVENT:
+ if (!obj->u.event.manual)
+ obj->u.event.signaled = false;
+ break;
}
}
wake_up_process(q->task);
@@ -238,6 +249,26 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
}
}
+static void try_wake_any_event(struct ntsync_obj *event)
+{
+ struct ntsync_q_entry *entry;
+
+ lockdep_assert_held(&event->lock);
+
+ list_for_each_entry(entry, &event->any_waiters, node) {
+ struct ntsync_q *q = entry->q;
+
+ if (!event->u.event.signaled)
+ break;
+
+ if (atomic_cmpxchg(&q->signaled, -1, entry->index) == -1) {
+ if (!event->u.event.manual)
+ event->u.event.signaled = false;
+ wake_up_process(q->task);
+ }
+ }
+}
+
/*
* Actually change the semaphore state, returning -EOVERFLOW if it is made
* invalid.
@@ -544,6 +575,30 @@ static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp)
return put_user(fd, &user_args->mutex);
}
+static int ntsync_create_event(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_event_args __user *user_args = argp;
+ struct ntsync_event_args args;
+ struct ntsync_obj *event;
+ int fd;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ event = ntsync_alloc_obj(dev, NTSYNC_TYPE_EVENT);
+ if (!event)
+ return -ENOMEM;
+ event->u.event.manual = args.manual;
+ event->u.event.signaled = args.signaled;
+ fd = ntsync_obj_get_fd(event);
+ if (fd < 0) {
+ kfree(event);
+ return fd;
+ }
+
+ return put_user(fd, &user_args->event);
+}
+
static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
{
struct file *file = fget(fd);
@@ -665,6 +720,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj)
case NTSYNC_TYPE_MUTEX:
try_wake_any_mutex(obj);
break;
+ case NTSYNC_TYPE_EVENT:
+ try_wake_any_event(obj);
+ break;
}
}
@@ -857,6 +915,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
void __user *argp = (void __user *)parm;
switch (cmd) {
+ case NTSYNC_IOC_CREATE_EVENT:
+ return ntsync_create_event(dev, argp);
case NTSYNC_IOC_CREATE_MUTEX:
return ntsync_create_mutex(dev, argp);
case NTSYNC_IOC_CREATE_SEM:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 3861397c6c2f..b8cf503365ef 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -22,6 +22,12 @@ struct ntsync_mutex_args {
__u32 count;
};
+struct ntsync_event_args {
+ __u32 event;
+ __u32 manual;
+ __u32 signaled;
+};
+
struct ntsync_wait_args {
__u64 timeout;
__u64 objs;
@@ -37,6 +43,7 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
#define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
+#define NTSYNC_IOC_CREATE_EVENT _IOWR('N', 0x87, struct ntsync_event_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
--
2.43.0

88
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@ -0,0 +1,88 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 10/29] ntsync: Introduce NTSYNC_IOC_EVENT_SET.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:37 -0600
Message-Id: <20240131021356.10322-11-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtSetEvent().
This sets the event to the signaled state, and returns its previous state.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 37 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 38 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index c719ddd9f6d7..b2da50989953 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -447,6 +447,41 @@ static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
+{
+ struct ntsync_device *dev = event->dev;
+ __u32 prev_state;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ if (atomic_read(&event->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&event->lock, &dev->wait_all_lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = true;
+ try_wake_all_obj(dev, event);
+ try_wake_any_event(event);
+
+ spin_unlock(&event->lock);
+ spin_unlock(&dev->wait_all_lock);
+ } else {
+ spin_lock(&event->lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = true;
+ try_wake_any_event(event);
+
+ spin_unlock(&event->lock);
+ }
+
+ if (put_user(prev_state, (__u32 __user *)argp))
+ return -EFAULT;
+
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -470,6 +505,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
+ case NTSYNC_IOC_EVENT_SET:
+ return ntsync_event_set(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index b8cf503365ef..782057552483 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -48,5 +48,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
+#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#endif
--
2.43.0

73
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@ -0,0 +1,73 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 11/29] ntsync: Introduce NTSYNC_IOC_EVENT_RESET.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:38 -0600
Message-Id: <20240131021356.10322-12-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtResetEvent().
This sets the event to the unsignaled state, and returns its previous state.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 22 ++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index b2da50989953..009d927739b8 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -482,6 +482,26 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
return 0;
}
+static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp)
+{
+ __u32 prev_state;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ spin_lock(&event->lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = false;
+
+ spin_unlock(&event->lock);
+
+ if (put_user(prev_state, (__u32 __user *)argp))
+ return -EFAULT;
+
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -507,6 +527,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_kill(obj, argp);
case NTSYNC_IOC_EVENT_SET:
return ntsync_event_set(obj, argp);
+ case NTSYNC_IOC_EVENT_RESET:
+ return ntsync_event_reset(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 782057552483..f2d7507d8438 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -49,5 +49,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
+#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#endif
--
2.43.0

80
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@ -0,0 +1,80 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 12/29] ntsync: Introduce NTSYNC_IOC_EVENT_PULSE.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:39 -0600
Message-Id: <20240131021356.10322-13-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtPulseEvent().
This wakes up any waiters as if the event had been set, but does not set the
event, instead resetting it if it had been signalled. Thus, for a manual-reset
event, all waiters are woken, whereas for an auto-reset event, at most one
waiter is woken.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 10 ++++++++--
include/uapi/linux/ntsync.h | 1 +
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 009d927739b8..240ae858fa96 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -447,7 +447,7 @@ static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
-static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
+static int ntsync_event_set(struct ntsync_obj *event, void __user *argp, bool pulse)
{
struct ntsync_device *dev = event->dev;
__u32 prev_state;
@@ -463,6 +463,8 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
event->u.event.signaled = true;
try_wake_all_obj(dev, event);
try_wake_any_event(event);
+ if (pulse)
+ event->u.event.signaled = false;
spin_unlock(&event->lock);
spin_unlock(&dev->wait_all_lock);
@@ -472,6 +474,8 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
prev_state = event->u.event.signaled;
event->u.event.signaled = true;
try_wake_any_event(event);
+ if (pulse)
+ event->u.event.signaled = false;
spin_unlock(&event->lock);
}
@@ -526,9 +530,11 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
case NTSYNC_IOC_EVENT_SET:
- return ntsync_event_set(obj, argp);
+ return ntsync_event_set(obj, argp, false);
case NTSYNC_IOC_EVENT_RESET:
return ntsync_event_reset(obj, argp);
+ case NTSYNC_IOC_EVENT_PULSE:
+ return ntsync_event_set(obj, argp, true);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index f2d7507d8438..598f894f868d 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -50,5 +50,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
+#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#endif
--
2.43.0

72
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@ -0,0 +1,72 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 13/29] ntsync: Introduce NTSYNC_IOC_SEM_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:40 -0600
Message-Id: <20240131021356.10322-14-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQuerySemaphore().
This returns the current count and maximum count of the semaphore.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 21 +++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 240ae858fa96..6dccfbfb2512 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -506,6 +506,25 @@ static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp)
return 0;
}
+static int ntsync_sem_read(struct ntsync_obj *sem, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+
+ if (sem->type != NTSYNC_TYPE_SEM)
+ return -EINVAL;
+
+ args.sem = 0;
+ spin_lock(&sem->lock);
+ args.count = sem->u.sem.count;
+ args.max = sem->u.sem.max;
+ spin_unlock(&sem->lock);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -525,6 +544,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_SEM_POST:
return ntsync_sem_post(obj, argp);
+ case NTSYNC_IOC_SEM_READ:
+ return ntsync_sem_read(obj, argp);
case NTSYNC_IOC_MUTEX_UNLOCK:
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 598f894f868d..6017f621687e 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -51,5 +51,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
+#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
#endif
--
2.43.0

74
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@ -0,0 +1,74 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 14/29] ntsync: Introduce NTSYNC_IOC_MUTEX_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:41 -0600
Message-Id: <20240131021356.10322-15-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQueryMutant().
This returns the recursion count, owner, and abandoned state of the mutex.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 23 +++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 6dccfbfb2512..7f5f96ec7c69 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -525,6 +525,27 @@ static int ntsync_sem_read(struct ntsync_obj *sem, void __user *argp)
return 0;
}
+static int ntsync_mutex_read(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args;
+ int ret;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ args.mutex = 0;
+ 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);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -550,6 +571,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
+ case NTSYNC_IOC_MUTEX_READ:
+ return ntsync_mutex_read(obj, argp);
case NTSYNC_IOC_EVENT_SET:
return ntsync_event_set(obj, argp, false);
case NTSYNC_IOC_EVENT_RESET:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 6017f621687e..a1d0ef581212 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -52,5 +52,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
+#define NTSYNC_IOC_MUTEX_READ _IOR ('N', 0x8c, struct ntsync_mutex_args)
#endif
--
2.43.0

72
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0014.patch Normal file
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@ -0,0 +1,72 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 15/29] ntsync: Introduce NTSYNC_IOC_EVENT_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:42 -0600
Message-Id: <20240131021356.10322-16-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQueryEvent().
This returns the signaled state of the event and whether it is manual-reset.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 21 +++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 7f5f96ec7c69..5439c1c9e90f 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -546,6 +546,25 @@ static int ntsync_mutex_read(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+static int ntsync_event_read(struct ntsync_obj *event, void __user *argp)
+{
+ struct ntsync_event_args __user *user_args = argp;
+ struct ntsync_event_args args;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ args.event = 0;
+ spin_lock(&event->lock);
+ args.manual = event->u.event.manual;
+ args.signaled = event->u.event.signaled;
+ spin_unlock(&event->lock);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -579,6 +598,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_event_reset(obj, argp);
case NTSYNC_IOC_EVENT_PULSE:
return ntsync_event_set(obj, argp, true);
+ case NTSYNC_IOC_EVENT_READ:
+ return ntsync_event_read(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a1d0ef581212..582d33b0dcac 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -53,5 +53,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
#define NTSYNC_IOC_MUTEX_READ _IOR ('N', 0x8c, struct ntsync_mutex_args)
+#define NTSYNC_IOC_EVENT_READ _IOR ('N', 0x8d, struct ntsync_event_args)
#endif
--
2.43.0

194
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0015.patch Normal file
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@ -0,0 +1,194 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 16/29] ntsync: Introduce alertable waits.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:43 -0600
Message-Id: <20240131021356.10322-17-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
NT waits can optionally be made "alertable". This is a special channel for
thread wakeup that is mildly similar to SIGIO. A thread has an internal single
bit of "alerted" state, and if a thread is made alerted while an alertable wait,
the wait will return a special value, consume the "alerted" state, and will not
consume any of its objects.
Alerts are implemented using events; the user-space NT emulator is expected to
create an internal ntsync event for each thread and pass that event to wait
functions.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 68 ++++++++++++++++++++++++++++++++-----
include/uapi/linux/ntsync.h | 2 +-
2 files changed, 60 insertions(+), 10 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 5439c1c9e90f..1e619e1ce6a6 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -784,22 +784,29 @@ static int setup_wait(struct ntsync_device *dev,
const struct ntsync_wait_args *args, bool all,
struct ntsync_q **ret_q)
{
+ int fds[NTSYNC_MAX_WAIT_COUNT + 1];
const __u32 count = args->count;
- int fds[NTSYNC_MAX_WAIT_COUNT];
struct ntsync_q *q;
+ __u32 total_count;
__u32 i, j;
- if (!args->owner || args->pad)
+ if (!args->owner)
return -EINVAL;
if (args->count > NTSYNC_MAX_WAIT_COUNT)
return -EINVAL;
+ total_count = count;
+ if (args->alert)
+ total_count++;
+
if (copy_from_user(fds, u64_to_user_ptr(args->objs),
array_size(count, sizeof(*fds))))
return -EFAULT;
+ if (args->alert)
+ fds[count] = args->alert;
- q = kmalloc(struct_size(q, entries, count), GFP_KERNEL);
+ q = kmalloc(struct_size(q, entries, total_count), GFP_KERNEL);
if (!q)
return -ENOMEM;
q->task = current;
@@ -809,7 +816,7 @@ static int setup_wait(struct ntsync_device *dev,
q->ownerdead = false;
q->count = count;
- for (i = 0; i < count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = get_obj(dev, fds[i]);
@@ -860,9 +867,9 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
{
struct ntsync_wait_args args;
struct ntsync_q *q;
+ __u32 i, total_count;
ktime_t timeout;
int signaled;
- __u32 i;
int ret;
if (copy_from_user(&args, argp, sizeof(args)))
@@ -872,9 +879,13 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
if (ret < 0)
return ret;
+ total_count = args.count;
+ if (args.alert)
+ total_count++;
+
/* queue ourselves */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = entry->obj;
@@ -883,9 +894,15 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
spin_unlock(&obj->lock);
}
- /* check if we are already signaled */
+ /*
+ * Check if we are already signaled.
+ *
+ * Note that the API requires that normal objects are checked before
+ * the alert event. Hence we queue the alert event last, and check
+ * objects in order.
+ */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_obj *obj = q->entries[i].obj;
if (atomic_read(&q->signaled) != -1)
@@ -903,7 +920,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
/* and finally, unqueue */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = entry->obj;
@@ -964,6 +981,14 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
*/
list_add_tail(&entry->node, &obj->all_waiters);
}
+ if (args.alert) {
+ struct ntsync_q_entry *entry = &q->entries[args.count];
+ struct ntsync_obj *obj = entry->obj;
+
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_lock);
+ list_add_tail(&entry->node, &obj->any_waiters);
+ spin_unlock(&obj->lock);
+ }
/* check if we are already signaled */
@@ -971,6 +996,21 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
spin_unlock(&dev->wait_all_lock);
+ /*
+ * Check if the alert event is signaled, making sure to do so only
+ * after checking if the other objects are signaled.
+ */
+
+ if (args.alert) {
+ struct ntsync_obj *obj = q->entries[args.count].obj;
+
+ if (atomic_read(&q->signaled) == -1) {
+ spin_lock(&obj->lock);
+ try_wake_any_obj(obj);
+ spin_unlock(&obj->lock);
+ }
+ }
+
/* sleep */
timeout = ns_to_ktime(args.timeout);
@@ -994,6 +1034,16 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
put_obj(obj);
}
+ if (args.alert) {
+ struct ntsync_q_entry *entry = &q->entries[args.count];
+ struct ntsync_obj *obj = entry->obj;
+
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_lock);
+ list_del(&entry->node);
+ spin_unlock(&obj->lock);
+
+ put_obj(obj);
+ }
spin_unlock(&dev->wait_all_lock);
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 582d33b0dcac..7c91af7011e4 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -34,7 +34,7 @@ struct ntsync_wait_args {
__u32 count;
__u32 owner;
__u32 index;
- __u32 pad;
+ __u32 alert;
};
#define NTSYNC_MAX_WAIT_COUNT 64
--
2.43.0

213
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0016.patch Normal file
View File

@ -0,0 +1,213 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 17/29] selftests: ntsync: Add some tests for
semaphore state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:44 -0600
Message-Id: <20240131021356.10322-18-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
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>
---
tools/testing/selftests/Makefile | 1 +
.../testing/selftests/drivers/ntsync/Makefile | 8 +
tools/testing/selftests/drivers/ntsync/config | 1 +
.../testing/selftests/drivers/ntsync/ntsync.c | 143 ++++++++++++++++++
4 files changed, 153 insertions(+)
create mode 100644 tools/testing/selftests/drivers/ntsync/Makefile
create mode 100644 tools/testing/selftests/drivers/ntsync/config
create mode 100644 tools/testing/selftests/drivers/ntsync/ntsync.c
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 15b6a111c3be..6c714a4e6478 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -15,6 +15,7 @@ TARGETS += cpu-hotplug
TARGETS += damon
TARGETS += dmabuf-heaps
TARGETS += drivers/dma-buf
+TARGETS += drivers/ntsync
TARGETS += drivers/s390x/uvdevice
TARGETS += drivers/net/bonding
TARGETS += drivers/net/team
diff --git a/tools/testing/selftests/drivers/ntsync/Makefile b/tools/testing/selftests/drivers/ntsync/Makefile
new file mode 100644
index 000000000000..a34da5ccacf0
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/Makefile
@@ -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
diff --git a/tools/testing/selftests/drivers/ntsync/config b/tools/testing/selftests/drivers/ntsync/config
new file mode 100644
index 000000000000..60539c826d06
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/config
@@ -0,0 +1 @@
+CONFIG_WINESYNC=y
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
new file mode 100644
index 000000000000..6ceb48fb42e3
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Various unit tests for the "ntsync" synchronization primitive driver.
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#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);
+
+ close(sem);
+
+ close(fd);
+}
+
+TEST_HARNESS_MAIN
--
2.43.0

218
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0017.patch Normal file
View File

@ -0,0 +1,218 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 18/29] selftests: ntsync: Add some tests for mutex
state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:45 -0600
Message-Id: <20240131021356.10322-19-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test mutex-specific ioctls NTSYNC_IOC_MUTEX_UNLOCK and NTSYNC_IOC_MUTEX_READ,
and waiting on mutexes.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 181 ++++++++++++++++++
1 file changed, 181 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 6ceb48fb42e3..80c8bd409d68 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -40,6 +40,39 @@ static int post_sem(int sem, __u32 *count)
return ioctl(sem, NTSYNC_IOC_SEM_POST, count);
}
+static int read_mutex_state(int mutex, __u32 *count, __u32 *owner)
+{
+ struct ntsync_mutex_args args;
+ int ret;
+
+ memset(&args, 0xcc, sizeof(args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &args);
+ *count = args.count;
+ *owner = args.owner;
+ return ret;
+}
+
+#define check_mutex_state(mutex, count, owner) \
+ ({ \
+ __u32 __count, __owner; \
+ int ret = read_mutex_state((mutex), &__count, &__owner); \
+ EXPECT_EQ(0, ret); \
+ EXPECT_EQ((count), __count); \
+ EXPECT_EQ((owner), __owner); \
+ })
+
+static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
+{
+ struct ntsync_mutex_args args;
+ int ret;
+
+ args.owner = owner;
+ args.count = 0xdeadbeef;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_UNLOCK, &args);
+ *count = args.count;
+ return ret;
+}
+
static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
struct ntsync_wait_args args = {0};
@@ -140,4 +173,152 @@ TEST(semaphore_state)
close(fd);
}
+TEST(mutex_state)
+{
+ struct ntsync_mutex_args mutex_args;
+ __u32 owner, count, index;
+ struct timespec timeout;
+ int fd, ret, mutex;
+
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 0;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 2;
+ ret = ioctl(fd, NTSYNC_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, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ mutex = mutex_args.mutex;
+ check_mutex_state(mutex, 2, 123);
+
+ ret = unlock_mutex(mutex, 0, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ ret = unlock_mutex(mutex, 456, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+ check_mutex_state(mutex, 2, 123);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+ check_mutex_state(mutex, 1, 123);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, count);
+ check_mutex_state(mutex, 0, 0);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+
+ ret = wait_any(fd, 1, &mutex, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 456);
+
+ ret = wait_any(fd, 1, &mutex, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 2, 456);
+
+ ret = unlock_mutex(mutex, 456, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+ check_mutex_state(mutex, 1, 456);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ owner = 0;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ owner = 123;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+ check_mutex_state(mutex, 1, 456);
+
+ owner = 456;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ owner = 123;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ close(mutex);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ mutex = mutex_args.mutex;
+ check_mutex_state(mutex, 0, 0);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ close(mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

136
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0018.patch Normal file
View File

@ -0,0 +1,136 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 19/29] selftests: ntsync: Add some tests for
NTSYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:46 -0600
Message-Id: <20240131021356.10322-20-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test basic synchronous functionality of NTSYNC_IOC_WAIT_ANY, when objects are
considered signaled or not signaled, and how they are affected by a successful
wait.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 105 ++++++++++++++++++
1 file changed, 105 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 80c8bd409d68..13e7c9d7441e 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -321,4 +321,109 @@ TEST(mutex_state)
close(fd);
}
+TEST(test_wait_any)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 owner, index, count;
+ struct timespec timeout;
+ int objs[2], fd, ret;
+
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 2;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ owner = 123;
+ ret = ioctl(mutex_args.mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(1, index);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+
+ /* test waiting on the same object twice */
+ count = 2;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ objs[0] = objs[1] = sem_args.sem;
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, wait_args.index);
+ check_sem_state(sem_args.sem, 1, 3);
+
+ ret = wait_any(fd, 0, NULL, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 20/29] selftests: ntsync: Add some tests for
NTSYNC_IOC_WAIT_ALL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:47 -0600
Message-Id: <20240131021356.10322-21-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test basic synchronous functionality of NTSYNC_IOC_WAIT_ALL, and when objects
are considered simultaneously signaled.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 99 ++++++++++++++++++-
1 file changed, 97 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 13e7c9d7441e..77f1b7e42d76 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -73,7 +73,8 @@ static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
return ret;
}
-static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+static int wait_objs(int fd, unsigned long request, __u32 count,
+ const int *objs, __u32 owner, __u32 *index)
{
struct ntsync_wait_args args = {0};
struct timespec timeout;
@@ -86,11 +87,21 @@ static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *in
args.objs = (uintptr_t)objs;
args.owner = owner;
args.index = 0xdeadbeef;
- ret = ioctl(fd, NTSYNC_IOC_WAIT_ANY, &args);
+ ret = ioctl(fd, request, &args);
*index = args.index;
return ret;
}
+static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);
+}
+
+static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);
+}
+
TEST(semaphore_state)
{
struct ntsync_sem_args sem_args;
@@ -426,4 +437,88 @@ TEST(test_wait_any)
close(fd);
}
+TEST(test_wait_all)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 owner, index, count;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 2;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ count = 3;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 2, 3);
+ check_mutex_state(mutex_args.mutex, 3, 123);
+
+ owner = 123;
+ ret = ioctl(mutex_args.mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ /* test waiting on the same object twice */
+ objs[0] = objs[1] = sem_args.sem;
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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@ -0,0 +1,182 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 21/29] selftests: ntsync: Add some tests for wakeup
signaling with WINESYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:48 -0600
Message-Id: <20240131021356.10322-22-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test contended "wait-for-any" waits, to make sure that scheduling and wakeup
logic works correctly.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 152 ++++++++++++++++++
1 file changed, 152 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 77f1b7e42d76..96a866ef235f 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -521,4 +521,156 @@ TEST(test_wait_all)
close(fd);
}
+struct wake_args
+{
+ int fd;
+ int obj;
+};
+
+struct wait_args
+{
+ int fd;
+ unsigned long request;
+ struct ntsync_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 __u64 get_abs_timeout(unsigned int ms)
+{
+ struct timespec timeout;
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+ return (timeout.tv_sec * 1000000000) + timeout.tv_nsec + (ms * 1000000);
+}
+
+static int wait_for_thread(pthread_t thread, unsigned int ms)
+{
+ struct timespec timeout;
+
+ clock_gettime(CLOCK_REALTIME, &timeout);
+ timeout.tv_nsec += ms * 1000000;
+ timeout.tv_sec += (timeout.tv_nsec / 1000000000);
+ timeout.tv_nsec %= 1000000000;
+ return pthread_timedjoin_np(thread, NULL, &timeout);
+}
+
+TEST(wake_any)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
+ int objs[2], fd, ret;
+ __u32 count, index;
+ pthread_t thread;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 1;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ /* test waking the semaphore */
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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 = NTSYNC_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);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 0, 3);
+
+ 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 */
+ ret = wait_any(fd, 1, &mutex_args.mutex, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, mutex_args.count);
+ check_mutex_state(mutex_args.mutex, 1, 456);
+
+ 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 */
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ 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
--
2.43.0

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@ -0,0 +1,129 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 22/29] selftests: ntsync: Add some tests for wakeup
signaling with WINESYNC_IOC_WAIT_ALL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:49 -0600
Message-Id: <20240131021356.10322-23-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test contended "wait-for-all" waits, to make sure that scheduling and wakeup
logic works correctly, and that the wait only exits once objects are all
simultaneously signaled.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 98 +++++++++++++++++++
1 file changed, 98 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 96a866ef235f..7776fe71b8ef 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -673,4 +673,102 @@ TEST(wake_any)
close(fd);
}
+TEST(wake_all)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
+ int objs[2], fd, ret;
+ __u32 count, index;
+ pthread_t thread;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 1;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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 = NTSYNC_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);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ check_sem_state(sem_args.sem, 1, 3);
+
+ ret = wait_any(fd, 1, &sem_args.sem, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ count = 2;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 456);
+
+ 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 */
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ 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
--
2.43.0

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@ -0,0 +1,129 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 23/29] selftests: ntsync: Add some tests for
manual-reset event state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:50 -0600
Message-Id: <20240131021356.10322-24-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test event-specific ioctls NTSYNC_IOC_EVENT_SET, NTSYNC_IOC_EVENT_RESET,
NTSYNC_IOC_EVENT_PULSE, NTSYNC_IOC_EVENT_READ for manual-reset events, and
waiting on manual-reset events.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 7776fe71b8ef..98fc70a9a58b 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -73,6 +73,27 @@ static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
return ret;
}
+static int read_event_state(int event, __u32 *signaled, __u32 *manual)
+{
+ struct ntsync_event_args args;
+ int ret;
+
+ memset(&args, 0xcc, sizeof(args));
+ ret = ioctl(event, NTSYNC_IOC_EVENT_READ, &args);
+ *signaled = args.signaled;
+ *manual = args.manual;
+ return ret;
+}
+
+#define check_event_state(event, signaled, manual) \
+ ({ \
+ __u32 __signaled, __manual; \
+ int ret = read_event_state((event), &__signaled, &__manual); \
+ EXPECT_EQ(0, ret); \
+ EXPECT_EQ((signaled), __signaled); \
+ EXPECT_EQ((manual), __manual); \
+ })
+
static int wait_objs(int fd, unsigned long request, __u32 count,
const int *objs, __u32 owner, __u32 *index)
{
@@ -332,6 +353,74 @@ TEST(mutex_state)
close(fd);
}
+TEST(manual_event_state)
+{
+ struct ntsync_event_args event_args;
+ __u32 index, signaled;
+ int fd, event, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ event_args.manual = 1;
+ event_args.signaled = 0;
+ event_args.event = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, event_args.event);
+ event = event_args.event;
+ check_event_state(event, 0, 1);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 1, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 1, 1);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_event_state(event, 1, 1);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 1);
+
+ close(event);
+
+ close(fd);
+}
+
TEST(test_wait_any)
{
struct ntsync_mutex_args mutex_args = {0};
--
2.43.0

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@ -0,0 +1,92 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 24/29] selftests: ntsync: Add some tests for
auto-reset event state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:51 -0600
Message-Id: <20240131021356.10322-25-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test event-specific ioctls NTSYNC_IOC_EVENT_SET, NTSYNC_IOC_EVENT_RESET,
NTSYNC_IOC_EVENT_PULSE, NTSYNC_IOC_EVENT_READ for auto-reset events, and
waiting on auto-reset events.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 59 +++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 98fc70a9a58b..f1fb28949367 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -421,6 +421,65 @@ TEST(manual_event_state)
close(fd);
}
+TEST(auto_event_state)
+{
+ struct ntsync_event_args event_args;
+ __u32 index, signaled;
+ int fd, event, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ event_args.manual = 0;
+ event_args.signaled = 1;
+ event_args.event = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, event_args.event);
+ event = event_args.event;
+
+ check_event_state(event, 1, 0);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 1, 0);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_event_state(event, 0, 0);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 0);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 0);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 0);
+
+ close(event);
+
+ close(fd);
+}
+
TEST(test_wait_any)
{
struct ntsync_mutex_args mutex_args = {0};
--
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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 25/29] selftests: ntsync: Add some tests for wakeup
signaling with events.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:52 -0600
Message-Id: <20240131021356.10322-26-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Expand the contended wait tests, which previously only covered events and
semaphores, to cover events as well.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 151 +++++++++++++++++-
1 file changed, 147 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index f1fb28949367..598333df3e6d 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -587,6 +587,7 @@ TEST(test_wait_any)
TEST(test_wait_all)
{
+ struct ntsync_event_args event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_sem_args sem_args = {0};
__u32 owner, index, count;
@@ -609,6 +610,11 @@ TEST(test_wait_all)
EXPECT_EQ(0, ret);
EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
objs[0] = sem_args.sem;
objs[1] = mutex_args.mutex;
@@ -657,6 +663,14 @@ TEST(test_wait_all)
check_sem_state(sem_args.sem, 1, 3);
check_mutex_state(mutex_args.mutex, 1, 123);
+ objs[0] = sem_args.sem;
+ objs[1] = event_args.event;
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_event_state(event_args.event, 1, 1);
+
/* test waiting on the same object twice */
objs[0] = objs[1] = sem_args.sem;
ret = wait_all(fd, 2, objs, 123, &index);
@@ -665,6 +679,7 @@ TEST(test_wait_all)
close(sem_args.sem);
close(mutex_args.mutex);
+ close(event_args.event);
close(fd);
}
@@ -713,12 +728,13 @@ static int wait_for_thread(pthread_t thread, unsigned int ms)
TEST(wake_any)
{
+ struct ntsync_event_args event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
struct wait_args thread_args;
+ __u32 count, index, signaled;
int objs[2], fd, ret;
- __u32 count, index;
pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
@@ -800,10 +816,101 @@ TEST(wake_any)
EXPECT_EQ(0, thread_args.ret);
EXPECT_EQ(1, wait_args.index);
+ /* test waking events */
+
+ event_args.manual = false;
+ event_args.signaled = false;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ objs[1] = event_args.event;
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 0);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 0);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ close(event_args.event);
+
+ event_args.manual = true;
+ event_args.signaled = false;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ objs[1] = event_args.event;
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 1, 1);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 1);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ close(event_args.event);
+
/* delete an object while it's being waited on */
wait_args.timeout = get_abs_timeout(200);
wait_args.owner = 123;
+ objs[1] = mutex_args.mutex;
ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
EXPECT_EQ(0, ret);
@@ -823,12 +930,14 @@ TEST(wake_any)
TEST(wake_all)
{
+ struct ntsync_event_args manual_event_args = {0};
+ struct ntsync_event_args auto_event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
struct wait_args thread_args;
- int objs[2], fd, ret;
- __u32 count, index;
+ __u32 count, index, signaled;
+ int objs[4], fd, ret;
pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
@@ -848,12 +957,24 @@ TEST(wake_all)
EXPECT_EQ(0, ret);
EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ manual_event_args.manual = true;
+ manual_event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &manual_event_args);
+ EXPECT_EQ(0, ret);
+
+ auto_event_args.manual = false;
+ auto_event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &auto_event_args);
+ EXPECT_EQ(0, ret);
+
objs[0] = sem_args.sem;
objs[1] = mutex_args.mutex;
+ objs[2] = manual_event_args.event;
+ objs[3] = auto_event_args.event;
wait_args.timeout = get_abs_timeout(1000);
wait_args.objs = (uintptr_t)objs;
- wait_args.count = 2;
+ wait_args.count = 4;
wait_args.owner = 456;
thread_args.fd = fd;
thread_args.args = &wait_args;
@@ -887,12 +1008,32 @@ TEST(wake_all)
check_mutex_state(mutex_args.mutex, 0, 0);
+ ret = ioctl(manual_event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
count = 2;
ret = post_sem(sem_args.sem, &count);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 2, 3);
+
+ ret = ioctl(auto_event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
+ ret = ioctl(manual_event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(auto_event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
check_sem_state(sem_args.sem, 1, 3);
check_mutex_state(mutex_args.mutex, 1, 456);
+ check_event_state(manual_event_args.event, 1, 1);
+ check_event_state(auto_event_args.event, 0, 0);
ret = wait_for_thread(thread, 100);
EXPECT_EQ(0, ret);
@@ -910,6 +1051,8 @@ TEST(wake_all)
close(sem_args.sem);
close(mutex_args.mutex);
+ close(manual_event_args.event);
+ close(auto_event_args.event);
ret = wait_for_thread(thread, 200);
EXPECT_EQ(0, ret);
--
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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 26/29] selftests: ntsync: Add tests for alertable
waits.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:53 -0600
Message-Id: <20240131021356.10322-27-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test the "alert" functionality of NTSYNC_IOC_WAIT_ALL and NTSYNC_IOC_WAIT_ANY,
when a wait is woken with an alert and when it is woken by an object.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 179 +++++++++++++++++-
1 file changed, 176 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 598333df3e6d..6c00a55909aa 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -95,7 +95,7 @@ static int read_event_state(int event, __u32 *signaled, __u32 *manual)
})
static int wait_objs(int fd, unsigned long request, __u32 count,
- const int *objs, __u32 owner, __u32 *index)
+ const int *objs, __u32 owner, int alert, __u32 *index)
{
struct ntsync_wait_args args = {0};
struct timespec timeout;
@@ -108,6 +108,7 @@ static int wait_objs(int fd, unsigned long request, __u32 count,
args.objs = (uintptr_t)objs;
args.owner = owner;
args.index = 0xdeadbeef;
+ args.alert = alert;
ret = ioctl(fd, request, &args);
*index = args.index;
return ret;
@@ -115,12 +116,26 @@ static int wait_objs(int fd, unsigned long request, __u32 count,
static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
- return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, 0, index);
}
static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
- return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, 0, index);
+}
+
+static int wait_any_alert(int fd, __u32 count, const int *objs,
+ __u32 owner, int alert, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY,
+ count, objs, owner, alert, index);
+}
+
+static int wait_all_alert(int fd, __u32 count, const int *objs,
+ __u32 owner, int alert, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL,
+ count, objs, owner, alert, index);
}
TEST(semaphore_state)
@@ -1062,4 +1077,162 @@ TEST(wake_all)
close(fd);
}
+TEST(alert_any)
+{
+ struct ntsync_event_args event_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 index, count, signaled;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ 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);
+ objs[0] = sem_args.sem;
+
+ sem_args.count = 1;
+ 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);
+ objs[1] = sem_args.sem;
+
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 0, NULL, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 0, NULL, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ close(event_args.event);
+
+ /* test with an auto-reset event */
+
+ event_args.manual = false;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ count = 1;
+ ret = post_sem(objs[0], &count);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(event_args.event);
+
+ close(objs[0]);
+ close(objs[1]);
+
+ close(fd);
+}
+
+TEST(alert_all)
+{
+ struct ntsync_event_args event_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 index, count, signaled;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ 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);
+ objs[0] = sem_args.sem;
+
+ sem_args.count = 1;
+ 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);
+ objs[1] = sem_args.sem;
+
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ close(event_args.event);
+
+ /* test with an auto-reset event */
+
+ event_args.manual = false;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ count = 2;
+ ret = post_sem(objs[1], &count);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(event_args.event);
+
+ close(objs[0]);
+ close(objs[1]);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 27/29] selftests: ntsync: Add some tests for wakeup
signaling via alerts.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:54 -0600
Message-Id: <20240131021356.10322-28-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Expand the alert tests to cover alerting a thread mid-wait, to test that the
relevant scheduling logic works correctly.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 62 +++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 6c00a55909aa..09153d0686ac 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -1080,9 +1080,12 @@ TEST(wake_all)
TEST(alert_any)
{
struct ntsync_event_args event_args = {0};
+ struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
__u32 index, count, signaled;
+ struct wait_args thread_args;
int objs[2], fd, ret;
+ pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
ASSERT_LE(0, fd);
@@ -1130,6 +1133,34 @@ TEST(alert_any)
EXPECT_EQ(0, ret);
EXPECT_EQ(2, index);
+ /* test wakeup via alert */
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ wait_args.objs = (uintptr_t)objs;
+ wait_args.count = 2;
+ wait_args.owner = 123;
+ wait_args.index = 0xdeadbeef;
+ wait_args.alert = event_args.event;
+ thread_args.fd = fd;
+ thread_args.args = &wait_args;
+ thread_args.request = NTSYNC_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);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(2, wait_args.index);
+
close(event_args.event);
/* test with an auto-reset event */
@@ -1166,9 +1197,12 @@ TEST(alert_any)
TEST(alert_all)
{
struct ntsync_event_args event_args = {0};
+ struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
__u32 index, count, signaled;
int objs[2], fd, ret;
+ pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
ASSERT_LE(0, fd);
@@ -1202,6 +1236,34 @@ TEST(alert_all)
EXPECT_EQ(0, ret);
EXPECT_EQ(2, index);
+ /* test wakeup via alert */
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ wait_args.objs = (uintptr_t)objs;
+ wait_args.count = 2;
+ wait_args.owner = 123;
+ wait_args.index = 0xdeadbeef;
+ wait_args.alert = event_args.event;
+ thread_args.fd = fd;
+ thread_args.args = &wait_args;
+ thread_args.request = NTSYNC_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);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(2, wait_args.index);
+
close(event_args.event);
/* test with an auto-reset event */
--
2.43.0

39
linux-clang/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0027.patch Normal file
View File

@ -0,0 +1,39 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 28/29] maintainers: Add an entry for ntsync.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:55 -0600
Message-Id: <20240131021356.10322-29-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Add myself as maintainer, supported by CodeWeavers.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
MAINTAINERS | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 8d1052fa6a69..7924127d351b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15585,6 +15585,15 @@ T: git https://github.com/Paragon-Software-Group/linux-ntfs3.git
F: Documentation/filesystems/ntfs3.rst
F: fs/ntfs3/
+NTSYNC SYNCHRONIZATION PRIMITIVE DRIVER
+M: Elizabeth Figura <zfigura@codeweavers.com>
+L: wine-devel@winehq.org
+S: Supported
+F: Documentation/userspace-api/ntsync.rst
+F: drivers/misc/ntsync.c
+F: include/uapi/linux/ntsync.h
+F: tools/testing/selftests/drivers/ntsync/
+
NUBUS SUBSYSTEM
M: Finn Thain <fthain@linux-m68k.org>
L: linux-m68k@lists.linux-m68k.org
--
2.43.0

68
linux-gcc/linux6.7-zen/patches/0001-[PATCH_RFC_2_9]_ntsync:_Reserve_a_minor_device_number_and_ioctl _range..patch
View File

@ -1,68 +0,0 @@
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
Documentation/admin-guide/devices.txt | 3 ++-
Documentation/userspace-api/ioctl/ioctl-number.rst | 2 ++
drivers/misc/ntsync.c | 3 ++-
include/linux/miscdevice.h | 1 +
4 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt
index 94c98be1329a..041404397ee5 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/ntsync NT 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/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 457e16f06e04..a1326a5bc2e0 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -378,6 +378,8 @@ Code Seq# Include File Comments
<mailto:thomas@winischhofer.net>
0xF6 all LTTng Linux Trace Toolkit Next Generation
<mailto:mathieu.desnoyers@efficios.com>
+0xF7 00-1F uapi/linux/ntsync.h NT synchronization primitives
+ <mailto:wine-devel@winehq.org>
0xF8 all arch/x86/include/uapi/asm/amd_hsmp.h AMD HSMP EPYC system management interface driver
<mailto:nchatrad@amd.com>
0xFD all linux/dm-ioctl.h
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 9424c6210e51..84b498e2b2d5 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -40,7 +40,7 @@ static const struct file_operations ntsync_fops = {
};
static struct miscdevice ntsync_misc = {
- .minor = MISC_DYNAMIC_MINOR,
+ .minor = NTSYNC_MINOR,
.name = NTSYNC_NAME,
.fops = &ntsync_fops,
};
@@ -51,3 +51,4 @@ MODULE_AUTHOR("Elizabeth Figura");
MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives");
MODULE_LICENSE("GPL");
MODULE_ALIAS("devname:" NTSYNC_NAME);
+MODULE_ALIAS_MISCDEV(NTSYNC_MINOR);
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index c0fea6ca5076..fe5d9366fdf7 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 NTSYNC_MINOR 243
#define MISC_DYNAMIC_MINOR 255
struct device;
--
2.43.0

191
linux-gcc/linux6.7-zen/patches/0002-[PATCH_RFC_3_9]_ntsync:_Introduce_NTSYNC_IOC_CREATE_SEM_and _NTSYNC_IOC_DELETE..patch
View File

@ -1,191 +0,0 @@
These correspond to the NT syscalls NtCreateSemaphore() and NtClose().
Unlike those functions, however, these ioctls do not handle object names, or
lookup of existing objects, or handle reference counting, but simply create the
underlying primitive. The user space emulator is expected to implement those
functions if they are required.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 117 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 25 ++++++++
2 files changed, 142 insertions(+)
create mode 100644 include/uapi/linux/ntsync.h
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 84b498e2b2d5..3287b94be351 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -8,23 +8,140 @@
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/xarray.h>
+#include <uapi/linux/ntsync.h>
#define NTSYNC_NAME "ntsync"
+enum ntsync_type {
+ NTSYNC_TYPE_SEM,
+};
+
+struct ntsync_obj {
+ struct rcu_head rhead;
+ struct kref refcount;
+
+ enum ntsync_type type;
+
+ union {
+ struct {
+ __u32 count;
+ __u32 max;
+ } sem;
+ } u;
+};
+
+struct ntsync_device {
+ struct xarray objects;
+};
+
+static void destroy_obj(struct kref *ref)
+{
+ struct ntsync_obj *obj = container_of(ref, struct ntsync_obj, refcount);
+
+ kfree_rcu(obj, rhead);
+}
+
+static void put_obj(struct ntsync_obj *obj)
+{
+ kref_put(&obj->refcount, destroy_obj);
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ xa_init_flags(&dev->objects, XA_FLAGS_ALLOC);
+
+ file->private_data = dev;
return nonseekable_open(inode, file);
}
static int ntsync_char_release(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev = file->private_data;
+ struct ntsync_obj *obj;
+ unsigned long id;
+
+ xa_for_each(&dev->objects, id, obj)
+ put_obj(obj);
+
+ xa_destroy(&dev->objects);
+
+ kfree(dev);
+
+ return 0;
+}
+
+static void init_obj(struct ntsync_obj *obj)
+{
+ kref_init(&obj->refcount);
+}
+
+static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ __u32 id;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (args.count > args.max)
+ return -EINVAL;
+
+ sem = kzalloc(sizeof(*sem), GFP_KERNEL);
+ if (!sem)
+ return -ENOMEM;
+
+ init_obj(sem);
+ sem->type = NTSYNC_TYPE_SEM;
+ sem->u.sem.count = args.count;
+ sem->u.sem.max = args.max;
+
+ ret = xa_alloc(&dev->objects, &id, sem, xa_limit_32b, GFP_KERNEL);
+ if (ret < 0) {
+ kfree(sem);
+ return ret;
+ }
+
+ return put_user(id, &user_args->sem);
+}
+
+static int ntsync_delete(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_obj *obj;
+ __u32 id;
+
+ if (get_user(id, (__u32 __user *)argp))
+ return -EFAULT;
+
+ obj = xa_erase(&dev->objects, id);
+ if (!obj)
+ return -EINVAL;
+
+ put_obj(obj);
return 0;
}
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
+ struct ntsync_device *dev = file->private_data;
+ void __user *argp = (void __user *)parm;
+
switch (cmd) {
+ case NTSYNC_IOC_CREATE_SEM:
+ return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_DELETE:
+ return ntsync_delete(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
new file mode 100644
index 000000000000..d97afc138dcc
--- /dev/null
+++ b/include/uapi/linux/ntsync.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Kernel support for NT synchronization primitive emulation
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#ifndef __LINUX_NTSYNC_H
+#define __LINUX_NTSYNC_H
+
+#include <linux/types.h>
+
+struct ntsync_sem_args {
+ __u32 sem;
+ __u32 count;
+ __u32 max;
+};
+
+#define NTSYNC_IOC_BASE 0xf7
+
+#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \
+ struct ntsync_sem_args)
+#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
+
+#endif
--
2.43.0

147
linux-gcc/linux6.7-zen/patches/0003-[PATCH_RFC_4_9]_ntsync:_Introduce_NTSYNC_IOC_PUT_SEM..patch
View File

@ -1,147 +0,0 @@
This corresponds to the NT syscall NtReleaseSemaphore().
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 76 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 2 +
2 files changed, 78 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 3287b94be351..d1c91c2a4f1a 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -21,9 +21,11 @@ enum ntsync_type {
struct ntsync_obj {
struct rcu_head rhead;
struct kref refcount;
+ spinlock_t lock;
enum ntsync_type type;
+ /* The following fields are protected by the object lock. */
union {
struct {
__u32 count;
@@ -36,6 +38,19 @@ struct ntsync_device {
struct xarray objects;
};
+static struct ntsync_obj *get_obj(struct ntsync_device *dev, __u32 id)
+{
+ struct ntsync_obj *obj;
+
+ rcu_read_lock();
+ obj = xa_load(&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 ntsync_obj *obj = container_of(ref, struct ntsync_obj, refcount);
@@ -48,6 +63,18 @@ static void put_obj(struct ntsync_obj *obj)
kref_put(&obj->refcount, destroy_obj);
}
+static struct ntsync_obj *get_obj_typed(struct ntsync_device *dev, __u32 id,
+ enum ntsync_type type)
+{
+ struct ntsync_obj *obj = get_obj(dev, id);
+
+ if (obj && obj->type != type) {
+ put_obj(obj);
+ return NULL;
+ }
+ return obj;
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
struct ntsync_device *dev;
@@ -81,6 +108,7 @@ static int ntsync_char_release(struct inode *inode, struct file *file)
static void init_obj(struct ntsync_obj *obj)
{
kref_init(&obj->refcount);
+ spin_lock_init(&obj->lock);
}
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
@@ -131,6 +159,52 @@ static int ntsync_delete(struct ntsync_device *dev, void __user *argp)
return 0;
}
+/*
+ * Actually change the semaphore state, returning -EOVERFLOW if it is made
+ * invalid.
+ */
+static int put_sem_state(struct ntsync_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 ntsync_put_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ __u32 prev_count;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ sem = get_obj_typed(dev, args.sem, NTSYNC_TYPE_SEM);
+ if (!sem)
+ return -EINVAL;
+
+ spin_lock(&sem->lock);
+
+ prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count);
+
+ spin_unlock(&sem->lock);
+
+ put_obj(sem);
+
+ if (!ret && put_user(prev_count, &user_args->count))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
@@ -142,6 +216,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_PUT_SEM:
+ return ntsync_put_sem(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index d97afc138dcc..8c610d65f8ef 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -21,5 +21,7 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \
struct ntsync_sem_args)
#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
+#define NTSYNC_IOC_PUT_SEM _IOWR(NTSYNC_IOC_BASE, 2, \
+ struct ntsync_sem_args)
#endif
--
2.43.0

107
linux-gcc/linux6.7-zen/patches/0007-[PATCH_RFC_8_9]_ntsync:_Introduce_NTSYNC_IOC_PUT_MUTEX..patch
View File

@ -1,107 +0,0 @@
This corresponds to the NT syscall NtReleaseMutant().
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 67 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 2 ++
2 files changed, 69 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index d48f2ef41341..28f43768d1c3 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -449,6 +449,71 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state, returning -EPERM if not the owner.
+ */
+static int put_mutex_state(struct ntsync_obj *mutex,
+ const struct ntsync_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 ntsync_put_mutex(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args;
+ struct ntsync_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_typed(dev, args.mutex, NTSYNC_TYPE_MUTEX);
+ if (!mutex)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_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 ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
{
int ret = 0;
@@ -738,6 +803,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_PUT_MUTEX:
+ return ntsync_put_mutex(dev, argp);
case NTSYNC_IOC_PUT_SEM:
return ntsync_put_sem(dev, argp);
case NTSYNC_IOC_WAIT_ALL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 26d1b3d4847f..2e44e7e77776 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -46,5 +46,7 @@ struct ntsync_wait_args {
struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_MUTEX _IOWR(NTSYNC_IOC_BASE, 5, \
struct ntsync_mutex_args)
+#define NTSYNC_IOC_PUT_MUTEX _IOWR(NTSYNC_IOC_BASE, 6, \
+ struct ntsync_mutex_args)
#endif
--
2.43.0

170
linux-gcc/linux6.7-zen/patches/0008-[PATCH_RFC_9_9]_ntsync:_Introduce_NTSYNC_IOC_KILL_OWNER..patch
View File

@ -1,170 +0,0 @@
This does not correspond to any NT syscall, but rather should be called by the
user-space NT emulator when a thread dies. It is responsible for marking any
mutexes owned by that thread as abandoned.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 80 ++++++++++++++++++++++++++++++++++++-
include/uapi/linux/ntsync.h | 1 +
2 files changed, 79 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 28f43768d1c3..1173c750c106 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -64,6 +64,7 @@ struct ntsync_obj {
struct {
__u32 count;
__u32 owner;
+ bool ownerdead;
} mutex;
} u;
};
@@ -87,6 +88,7 @@ struct ntsync_q {
atomic_t signaled;
bool all;
+ bool ownerdead;
__u32 count;
struct ntsync_q_entry entries[];
};
@@ -240,6 +242,9 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.sem.count--;
break;
case NTSYNC_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;
@@ -299,6 +304,9 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
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);
@@ -514,6 +522,71 @@ static int ntsync_put_mutex(struct ntsync_device *dev, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state to mark its owner as dead.
+ */
+static void put_mutex_ownerdead_state(struct ntsync_obj *mutex)
+{
+ lockdep_assert_held(&mutex->lock);
+
+ mutex->u.mutex.ownerdead = true;
+ mutex->u.mutex.owner = 0;
+ mutex->u.mutex.count = 0;
+}
+
+static int ntsync_kill_owner(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_obj *obj;
+ unsigned long id;
+ __u32 owner;
+
+ if (get_user(owner, (__u32 __user *)argp))
+ return -EFAULT;
+ if (!owner)
+ return -EINVAL;
+
+ rcu_read_lock();
+
+ xa_for_each(&dev->objects, id, obj) {
+ if (!kref_get_unless_zero(&obj->refcount))
+ continue;
+
+ if (obj->type != NTSYNC_TYPE_MUTEX) {
+ put_obj(obj);
+ continue;
+ }
+
+ if (atomic_read(&obj->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_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 ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
{
int ret = 0;
@@ -585,6 +658,7 @@ static int setup_wait(struct ntsync_device *dev,
q->owner = args->owner;
atomic_set(&q->signaled, -1);
q->all = all;
+ q->ownerdead = false;
q->count = count;
for (i = 0; i < count; i++) {
@@ -697,7 +771,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -778,7 +852,7 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -803,6 +877,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE:
return ntsync_delete(dev, argp);
+ case NTSYNC_IOC_KILL_OWNER:
+ return ntsync_kill_owner(dev, argp);
case NTSYNC_IOC_PUT_MUTEX:
return ntsync_put_mutex(dev, argp);
case NTSYNC_IOC_PUT_SEM:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 2e44e7e77776..fec9a3993322 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -48,5 +48,6 @@ struct ntsync_wait_args {
struct ntsync_mutex_args)
#define NTSYNC_IOC_PUT_MUTEX _IOWR(NTSYNC_IOC_BASE, 6, \
struct ntsync_mutex_args)
+#define NTSYNC_IOC_KILL_OWNER _IOW (NTSYNC_IOC_BASE, 7, __u32)
#endif
--
2.43.0

24
linux-gcc/linux6.7-zen/patches/0000-[PATCH_RFC_1_9]_ntsync:_Introduce_the_ntsync_driver_and_character _device..patch → linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0000.patch
View File

@ -1,3 +1,13 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 1/29] ntsync: Introduce the ntsync driver and
character device.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:28 -0600
Message-Id: <20240131021356.10322-2-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
ntsync uses a misc device as the simplest and least intrusive uAPI interface. ntsync uses a misc device as the simplest and least intrusive uAPI interface.
Each file description on the device represents an isolated NT instance, intended Each file description on the device represents an isolated NT instance, intended
@ -7,8 +17,8 @@ Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/Kconfig | 9 ++++++++ drivers/misc/Kconfig | 9 ++++++++
drivers/misc/Makefile | 1 + drivers/misc/Makefile | 1 +
drivers/misc/ntsync.c | 53 +++++++++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 52 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+) 3 files changed, 62 insertions(+)
create mode 100644 drivers/misc/ntsync.c create mode 100644 drivers/misc/ntsync.c
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
@ -45,15 +55,15 @@ index ea6ea5bbbc9c..153a3f4837e8 100644
obj-$(CONFIG_GP_PCI1XXXX) += mchp_pci1xxxx/ obj-$(CONFIG_GP_PCI1XXXX) += mchp_pci1xxxx/
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
new file mode 100644 new file mode 100644
index 000000000000..9424c6210e51 index 000000000000..e4969ef90722
--- /dev/null --- /dev/null
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -0,0 +1,53 @@ @@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only +// SPDX-License-Identifier: GPL-2.0-only
+/* +/*
+ * ntsync.c - Kernel driver for NT synchronization primitives + * ntsync.c - Kernel driver for NT synchronization primitives
+ * + *
+ * Copyright (C) 2021-2022 Elizabeth Figura + * Copyright (C) 2024 Elizabeth Figura
+ */ + */
+ +
+#include <linux/fs.h> +#include <linux/fs.h>
@ -86,7 +96,7 @@ index 000000000000..9424c6210e51
+ .open = ntsync_char_open, + .open = ntsync_char_open,
+ .release = ntsync_char_release, + .release = ntsync_char_release,
+ .unlocked_ioctl = ntsync_char_ioctl, + .unlocked_ioctl = ntsync_char_ioctl,
+ .compat_ioctl = ntsync_char_ioctl, + .compat_ioctl = compat_ptr_ioctl,
+ .llseek = no_llseek, + .llseek = no_llseek,
+}; +};
+ +
@ -101,6 +111,6 @@ index 000000000000..9424c6210e51
+MODULE_AUTHOR("Elizabeth Figura"); +MODULE_AUTHOR("Elizabeth Figura");
+MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives"); +MODULE_DESCRIPTION("Kernel driver for NT synchronization primitives");
+MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL");
+MODULE_ALIAS("devname:" NTSYNC_NAME);
-- --
2.43.0 2.43.0

224
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0001.patch Normal file
View File

@ -0,0 +1,224 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 2/29] ntsync: Introduce NTSYNC_IOC_CREATE_SEM.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:29 -0600
Message-Id: <20240131021356.10322-3-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtCreateSemaphore().
Semaphores are one of three types of object to be implemented in this driver,
the others being mutexes and events.
An NT semaphore contains a 32-bit counter, and is signaled and can be acquired
when the counter is nonzero. The counter has a maximum value which is specified
at creation time. The initial value of the semaphore is also specified at
creation time. There are no restrictions on the maximum and initial value.
Each object is exposed as an file, to which any number of fds may be opened.
When all fds are closed, the object is deleted.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../userspace-api/ioctl/ioctl-number.rst | 2 +
drivers/misc/ntsync.c | 120 ++++++++++++++++++
include/uapi/linux/ntsync.h | 21 +++
3 files changed, 143 insertions(+)
create mode 100644 include/uapi/linux/ntsync.h
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 457e16f06e04..2f5c6994f042 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -173,6 +173,8 @@ Code Seq# Include File Comments
'M' 00-0F drivers/video/fsl-diu-fb.h conflict!
'N' 00-1F drivers/usb/scanner.h
'N' 40-7F drivers/block/nvme.c
+'N' 80-8F uapi/linux/ntsync.h NT synchronization primitives
+ <mailto:wine-devel@winehq.org>
'O' 00-06 mtd/ubi-user.h UBI
'P' all linux/soundcard.h conflict!
'P' 60-6F sound/sscape_ioctl.h conflict!
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index e4969ef90722..3ad86d98b82d 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -5,26 +5,146 @@
* Copyright (C) 2024 Elizabeth Figura
*/
+#include <linux/anon_inodes.h>
+#include <linux/file.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
+#include <linux/slab.h>
+#include <uapi/linux/ntsync.h>
#define NTSYNC_NAME "ntsync"
+enum ntsync_type {
+ NTSYNC_TYPE_SEM,
+};
+
+struct ntsync_obj {
+ enum ntsync_type type;
+
+ union {
+ struct {
+ __u32 count;
+ __u32 max;
+ } sem;
+ } u;
+
+ struct file *file;
+ struct ntsync_device *dev;
+};
+
+struct ntsync_device {
+ struct file *file;
+};
+
+static int ntsync_obj_release(struct inode *inode, struct file *file)
+{
+ struct ntsync_obj *obj = file->private_data;
+
+ fput(obj->dev->file);
+ kfree(obj);
+
+ return 0;
+}
+
+static const struct file_operations ntsync_obj_fops = {
+ .owner = THIS_MODULE,
+ .release = ntsync_obj_release,
+ .llseek = no_llseek,
+};
+
+static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
+ enum ntsync_type type)
+{
+ struct ntsync_obj *obj;
+
+ obj = kzalloc(sizeof(*obj), GFP_KERNEL);
+ if (!obj)
+ return NULL;
+ obj->type = type;
+ obj->dev = dev;
+ get_file(dev->file);
+
+ return obj;
+}
+
+static int ntsync_obj_get_fd(struct ntsync_obj *obj)
+{
+ struct file *file;
+ int fd;
+
+ fd = get_unused_fd_flags(O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+ file = anon_inode_getfile("ntsync", &ntsync_obj_fops, obj, O_RDWR);
+ if (IS_ERR(file)) {
+ put_unused_fd(fd);
+ return PTR_ERR(file);
+ }
+ obj->file = file;
+ fd_install(fd, file);
+
+ return fd;
+}
+
+static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+ struct ntsync_obj *sem;
+ int fd;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (args.count > args.max)
+ return -EINVAL;
+
+ sem = ntsync_alloc_obj(dev, NTSYNC_TYPE_SEM);
+ if (!sem)
+ return -ENOMEM;
+ sem->u.sem.count = args.count;
+ sem->u.sem.max = args.max;
+ fd = ntsync_obj_get_fd(sem);
+ if (fd < 0) {
+ kfree(sem);
+ return fd;
+ }
+
+ return put_user(fd, &user_args->sem);
+}
+
static int ntsync_char_open(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ file->private_data = dev;
+ dev->file = file;
return nonseekable_open(inode, file);
}
static int ntsync_char_release(struct inode *inode, struct file *file)
{
+ struct ntsync_device *dev = file->private_data;
+
+ kfree(dev);
+
return 0;
}
static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
+ struct ntsync_device *dev = file->private_data;
+ void __user *argp = (void __user *)parm;
+
switch (cmd) {
+ case NTSYNC_IOC_CREATE_SEM:
+ return ntsync_create_sem(dev, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
new file mode 100644
index 000000000000..f38818e7759d
--- /dev/null
+++ b/include/uapi/linux/ntsync.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Kernel support for NT synchronization primitive emulation
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#ifndef __LINUX_NTSYNC_H
+#define __LINUX_NTSYNC_H
+
+#include <linux/types.h>
+
+struct ntsync_sem_args {
+ __u32 sem;
+ __u32 count;
+ __u32 max;
+};
+
+#define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+
+#endif
--
2.43.0

145
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0002.patch Normal file
View File

@ -0,0 +1,145 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 3/29] ntsync: Introduce NTSYNC_IOC_SEM_POST.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:30 -0600
Message-Id: <20240131021356.10322-4-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtReleaseSemaphore().
This increases the semaphore's internal counter by the given value, and returns
the previous value. If the counter would overflow the defined maximum, the
function instead fails and returns -EOVERFLOW.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 68 +++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 2 ++
2 files changed, 67 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 3ad86d98b82d..1af38969f9a2 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -20,23 +20,68 @@ enum ntsync_type {
};
struct ntsync_obj {
+ spinlock_t lock;
+
enum ntsync_type type;
+ struct file *file;
+ struct ntsync_device *dev;
+
+ /* The following fields are protected by the object lock. */
union {
struct {
__u32 count;
__u32 max;
} sem;
} u;
-
- struct file *file;
- struct ntsync_device *dev;
};
struct ntsync_device {
struct file *file;
};
+/*
+ * Actually change the semaphore state, returning -EOVERFLOW if it is made
+ * invalid.
+ */
+static int post_sem_state(struct ntsync_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 ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
+{
+ __u32 __user *user_args = argp;
+ __u32 prev_count;
+ __u32 args;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ if (sem->type != NTSYNC_TYPE_SEM)
+ return -EINVAL;
+
+ spin_lock(&sem->lock);
+
+ prev_count = sem->u.sem.count;
+ ret = post_sem_state(sem, args);
+
+ spin_unlock(&sem->lock);
+
+ if (!ret && put_user(prev_count, user_args))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -47,9 +92,25 @@ static int ntsync_obj_release(struct inode *inode, struct file *file)
return 0;
}
+static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
+ unsigned long parm)
+{
+ struct ntsync_obj *obj = file->private_data;
+ void __user *argp = (void __user *)parm;
+
+ switch (cmd) {
+ case NTSYNC_IOC_SEM_POST:
+ return ntsync_sem_post(obj, argp);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
static const struct file_operations ntsync_obj_fops = {
.owner = THIS_MODULE,
.release = ntsync_obj_release,
+ .unlocked_ioctl = ntsync_obj_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
.llseek = no_llseek,
};
@@ -64,6 +125,7 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
obj->type = type;
obj->dev = dev;
get_file(dev->file);
+ spin_lock_init(&obj->lock);
return obj;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index f38818e7759d..878ec4f0f2e8 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -18,4 +18,6 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
+
#endif
--
2.43.0

189
linux-gcc/linux6.7-zen/patches/0004-[PATCH_RFC_5_9]_ntsync:_Introduce_NTSYNC_IOC_WAIT_ANY..patch → linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0003.patch
View File

@ -1,31 +1,52 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 4/29] ntsync: Introduce NTSYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:31 -0600
Message-Id: <20240131021356.10322-5-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to part of the functionality of the NT syscall This corresponds to part of the functionality of the NT syscall
NtWaitForMultipleObjects(). Specifically, it implements the behaviour where NtWaitForMultipleObjects(). Specifically, it implements the behaviour where
the third argument (wait_any) is TRUE, and it does not handle alertable waits. the third argument (wait_any) is TRUE, and it does not handle alertable waits.
Those features have been split out into separate patches to ease review. Those features have been split out into separate patches to ease review.
NTSYNC_IOC_WAIT_ANY is a vectored wait function similar to poll(). Unlike
poll(), it "consumes" objects when they are signaled. For semaphores, this means
decreasing one from the internal counter. At most one object can be consumed by
this function.
Up to 64 objects can be waited on at once. As soon as one is signaled, the
object with the lowest index is consumed, and that index is returned via the
"index" field.
A timeout is supported. The timeout is passed as a u64 nanosecond value, which
represents absolute time measured against the MONOTONIC clock. If U64_MAX is
passed, the ioctl waits indefinitely.
This ioctl validates that all objects belong to the relevant device. This is not
necessary for any technical reason related to NTSYNC_IOC_WAIT_ANY, but will be
necessary for NTSYNC_IOC_WAIT_ALL introduced in the following patch.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 229 ++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 232 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 13 ++ include/uapi/linux/ntsync.h | 12 ++
2 files changed, 242 insertions(+) 2 files changed, 244 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index d1c91c2a4f1a..2e8d3c2d51a4 100644 index 1af38969f9a2..0a0ab755d57f 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -23,6 +23,8 @@ struct ntsync_obj { @@ -34,12 +34,55 @@ struct ntsync_obj {
struct kref refcount; __u32 max;
spinlock_t lock; } sem;
+ struct list_head any_waiters;
+
enum ntsync_type type;
/* The following fields are protected by the object lock. */
@@ -34,6 +36,28 @@ struct ntsync_obj {
} u; } u;
}; +
+ struct list_head any_waiters;
+};
+
+struct ntsync_q_entry { +struct ntsync_q_entry {
+ struct list_head node; + struct list_head node;
+ struct ntsync_q *q; + struct ntsync_q *q;
@ -46,18 +67,12 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ __u32 count; + __u32 count;
+ struct ntsync_q_entry entries[]; + struct ntsync_q_entry entries[];
+};
+
struct ntsync_device {
struct xarray objects;
}; };
@@ -109,6 +133,26 @@ static void init_obj(struct ntsync_obj *obj)
{ struct ntsync_device {
kref_init(&obj->refcount); struct file *file;
spin_lock_init(&obj->lock); };
+ INIT_LIST_HEAD(&obj->any_waiters);
+}
+
+static void try_wake_any_sem(struct ntsync_obj *sem) +static void try_wake_any_sem(struct ntsync_obj *sem)
+{ +{
+ struct ntsync_q_entry *entry; + struct ntsync_q_entry *entry;
@ -75,22 +90,58 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ wake_up_process(q->task); + wake_up_process(q->task);
+ } + }
+ } + }
} +}
+
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) /*
@@ -194,6 +238,8 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) * Actually change the semaphore state, returning -EOVERFLOW if it is made
* invalid.
@@ -73,6 +116,8 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
prev_count = sem->u.sem.count; prev_count = sem->u.sem.count;
ret = put_sem_state(sem, args.count); ret = post_sem_state(sem, args);
+ if (!ret) + if (!ret)
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
spin_unlock(&sem->lock); spin_unlock(&sem->lock);
@@ -205,6 +251,187 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) @@ -126,6 +171,7 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
return ret; obj->dev = dev;
get_file(dev->file);
spin_lock_init(&obj->lock);
+ INIT_LIST_HEAD(&obj->any_waiters);
return obj;
}
@@ -176,6 +222,190 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
return put_user(fd, &user_args->sem);
} }
+static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
+{
+ struct file *file = fget(fd);
+ struct ntsync_obj *obj;
+
+ if (file->f_op != &ntsync_obj_fops)
+ {
+ fput(file);
+ return NULL;
+ }
+
+ obj = file->private_data;
+ if (obj->dev != dev)
+ {
+ fput(file);
+ return NULL;
+ }
+
+ return obj;
+}
+
+static void put_obj(struct ntsync_obj *obj)
+{
+ fput(obj->file);
+}
+
+static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout) +static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
+{ +{
+ int ret = 0; + int ret = 0;
@ -115,16 +166,14 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+/* +/*
+ * Allocate and initialize the ntsync_q structure, but do not queue us yet. + * Allocate and initialize the ntsync_q structure, but do not queue us yet.
+ * Also, calculate the relative timeout.
+ */ + */
+static int setup_wait(struct ntsync_device *dev, +static int setup_wait(struct ntsync_device *dev,
+ const struct ntsync_wait_args *args, + const struct ntsync_wait_args *args,
+ ktime_t *ret_timeout, struct ntsync_q **ret_q) + struct ntsync_q **ret_q)
+{ +{
+ const __u32 count = args->count; + const __u32 count = args->count;
+ int fds[NTSYNC_MAX_WAIT_COUNT];
+ struct ntsync_q *q; + struct ntsync_q *q;
+ ktime_t timeout = 0;
+ __u32 *ids;
+ __u32 i, j; + __u32 i, j;
+ +
+ if (!args->owner || args->pad) + if (!args->owner || args->pad)
@ -133,31 +182,13 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ if (args->count > NTSYNC_MAX_WAIT_COUNT) + if (args->count > NTSYNC_MAX_WAIT_COUNT)
+ return -EINVAL; + return -EINVAL;
+ +
+ if (args->timeout) { + if (copy_from_user(fds, u64_to_user_ptr(args->objs),
+ struct timespec64 to; + array_size(count, sizeof(*fds))))
+
+ if (get_timespec64(&to, u64_to_user_ptr(args->timeout)))
+ return -EFAULT; + return -EFAULT;
+ if (!timespec64_valid(&to))
+ return -EINVAL;
+
+ timeout = timespec64_to_ns(&to);
+ }
+
+ ids = kmalloc_array(count, sizeof(*ids), GFP_KERNEL);
+ if (!ids)
+ return -ENOMEM;
+ if (copy_from_user(ids, u64_to_user_ptr(args->objs),
+ array_size(count, sizeof(*ids)))) {
+ kfree(ids);
+ return -EFAULT;
+ }
+ +
+ q = kmalloc(struct_size(q, entries, count), GFP_KERNEL); + q = kmalloc(struct_size(q, entries, count), GFP_KERNEL);
+ if (!q) { + if (!q)
+ kfree(ids);
+ return -ENOMEM; + return -ENOMEM;
+ }
+ q->task = current; + q->task = current;
+ q->owner = args->owner; + q->owner = args->owner;
+ atomic_set(&q->signaled, -1); + atomic_set(&q->signaled, -1);
@ -165,7 +196,7 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ for (i = 0; i < count; i++) { + for (i = 0; i < count; i++) {
+ struct ntsync_q_entry *entry = &q->entries[i]; + struct ntsync_q_entry *entry = &q->entries[i];
+ struct ntsync_obj *obj = get_obj(dev, ids[i]); + struct ntsync_obj *obj = get_obj(dev, fds[i]);
+ +
+ if (!obj) + if (!obj)
+ goto err; + goto err;
@ -175,16 +206,12 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ entry->index = i; + entry->index = i;
+ } + }
+ +
+ kfree(ids);
+
+ *ret_q = q; + *ret_q = q;
+ *ret_timeout = timeout;
+ return 0; + return 0;
+ +
+err: +err:
+ for (j = 0; j < i; j++) + for (j = 0; j < i; j++)
+ put_obj(q->entries[j].obj); + put_obj(q->entries[j].obj);
+ kfree(ids);
+ kfree(q); + kfree(q);
+ return -EINVAL; + return -EINVAL;
+} +}
@ -210,7 +237,7 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
+ +
+ ret = setup_wait(dev, &args, &timeout, &q); + ret = setup_wait(dev, &args, &q);
+ if (ret < 0) + if (ret < 0)
+ return ret; + return ret;
+ +
@ -240,7 +267,8 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ +
+ /* sleep */ + /* sleep */
+ +
+ ret = ntsync_schedule(q, args.timeout ? &timeout : NULL); + timeout = ns_to_ktime(args.timeout);
+ ret = ntsync_schedule(q, args.timeout == U64_MAX ? NULL : &timeout);
+ +
+ /* and finally, unqueue */ + /* and finally, unqueue */
+ +
@ -272,23 +300,23 @@ index d1c91c2a4f1a..2e8d3c2d51a4 100644
+ return ret; + return ret;
+} +}
+ +
static long ntsync_char_ioctl(struct file *file, unsigned int cmd, static int ntsync_char_open(struct inode *inode, struct file *file)
unsigned long parm)
{ {
@@ -218,6 +445,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, struct ntsync_device *dev;
return ntsync_delete(dev, argp); @@ -207,6 +437,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
case NTSYNC_IOC_PUT_SEM: switch (cmd) {
return ntsync_put_sem(dev, argp); case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_WAIT_ANY: + case NTSYNC_IOC_WAIT_ANY:
+ return ntsync_wait_any(dev, argp); + return ntsync_wait_any(dev, argp);
default: default:
return -ENOIOCTLCMD; return -ENOIOCTLCMD;
} }
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 8c610d65f8ef..10f07da7864e 100644 index 878ec4f0f2e8..9cd1dd05d971 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -16,6 +16,17 @@ struct ntsync_sem_args { @@ -16,7 +16,19 @@ struct ntsync_sem_args {
__u32 max; __u32 max;
}; };
@ -303,16 +331,11 @@ index 8c610d65f8ef..10f07da7864e 100644
+ +
+#define NTSYNC_MAX_WAIT_COUNT 64 +#define NTSYNC_MAX_WAIT_COUNT 64
+ +
#define NTSYNC_IOC_BASE 0xf7 #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
+#define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_SEM _IOWR(NTSYNC_IOC_BASE, 0, \ #define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
@@ -23,5 +34,7 @@ struct ntsync_sem_args {
#define NTSYNC_IOC_DELETE _IOW (NTSYNC_IOC_BASE, 1, __u32)
#define NTSYNC_IOC_PUT_SEM _IOWR(NTSYNC_IOC_BASE, 2, \
struct ntsync_sem_args)
+#define NTSYNC_IOC_WAIT_ANY _IOWR(NTSYNC_IOC_BASE, 3, \
+ struct ntsync_wait_args)
#endif
-- --
2.43.0 2.43.0

170
linux-gcc/linux6.7-zen/patches/0005-[PATCH_RFC_6_9]_ntsync:_Introduce_NTSYNC_IOC_WAIT_ALL..patch → linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0004.patch
View File

@ -1,21 +1,29 @@
This corresponds to part of the functionality of the NT syscall From git@z Thu Jan 1 00:00:00 1970
NtWaitForMultipleObjects(). Specifically, it implements the behaviour where Subject: [PATCH RFC v2 5/29] ntsync: Introduce NTSYNC_IOC_WAIT_ALL.
the third argument (wait_any) is FALSE, and it does not yet handle alertable From: Elizabeth Figura <zfigura@codeweavers.com>
waits. Date: Tue, 30 Jan 2024 20:13:32 -0600
Message-Id: <20240131021356.10322-6-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This is similar to NTSYNC_IOC_WAIT_ANY, but waits until all of the objects are
simultaneously signaled, and then acquires all of them as a single atomic
operation.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 241 ++++++++++++++++++++++++++++++++++-- drivers/misc/ntsync.c | 244 ++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 2 + include/uapi/linux/ntsync.h | 1 +
2 files changed, 235 insertions(+), 8 deletions(-) 2 files changed, 237 insertions(+), 8 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 2e8d3c2d51a4..2685363fae9e 100644 index 0a0ab755d57f..b86d62094344 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -23,7 +23,34 @@ struct ntsync_obj { @@ -35,7 +35,34 @@ struct ntsync_obj {
struct kref refcount; } sem;
spinlock_t lock; } u;
+ /* + /*
+ * any_waiters is protected by the object lock, but all_waiters is + * any_waiters is protected by the object lock, but all_waiters is
@ -33,22 +41,22 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ * lock all of the objects, and that means grabbing the wait_all_lock + * lock all of the objects, and that means grabbing the wait_all_lock
+ * below (and, due to lock ordering rules, before locking this object). + * below (and, due to lock ordering rules, before locking this object).
+ * However, wait-all is a rare operation, and grabbing the wait-all + * However, wait-all is a rare operation, and grabbing the wait-all
+ * lock for every wake would create unnecessary contention. Therefore we + * lock for every wake would create unnecessary contention.
+ * first check whether all_hint is zero, and, if it is, we skip trying + * Therefore we first check whether all_hint is zero, and, if it is,
+ * to wake "all" waiters. + * we skip trying to wake "all" waiters.
+ * + *
+ * This hint isn't protected by any lock. It might change during the + * This hint 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 + * course of a wake, but there's no meaningful race there; it's only a
+ * hint. + * hint.
+ * + *
+ * Since wait requests must originate from user-space threads, we're + * Since wait requests must originate from user-space threads, we're
+ * limited here by PID_MAX_LIMIT, so there's no risk of saturation. + * limited here by PID_MAX_LIMIT, so there's no risk of overflow.
+ */ + */
+ atomic_t all_hint; + atomic_t all_hint;
};
enum ntsync_type type; struct ntsync_q_entry {
@@ -56,14 +83,99 @@ struct ntsync_q {
@@ -54,11 +81,25 @@ struct ntsync_q {
*/ */
atomic_t signaled; atomic_t signaled;
@ -60,9 +68,9 @@ index 2e8d3c2d51a4..2685363fae9e 100644
struct ntsync_device { struct ntsync_device {
+ /* + /*
+ * Wait-all operations must atomically grab all objects, and be totally + * Wait-all operations must atomically grab all objects, and be totally
+ * ordered with respect to each other and wait-any operations. If one + * ordered with respect to each other and wait-any operations.
+ * thread is trying to acquire several objects, another thread cannot + * If one thread is trying to acquire several objects, another thread
+ * touch the object at the same time. + * cannot touch the object at the same time.
+ * + *
+ * We achieve this by grabbing multiple object locks 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, + * However, this creates a lock ordering problem. To solve that problem,
@ -71,28 +79,9 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ */ + */
+ spinlock_t wait_all_lock; + spinlock_t wait_all_lock;
+ +
struct xarray objects; struct file *file;
}; };
@@ -107,6 +148,8 @@ static int ntsync_char_open(struct inode *inode, struct file *file)
if (!dev)
return -ENOMEM;
+ spin_lock_init(&dev->wait_all_lock);
+
xa_init_flags(&dev->objects, XA_FLAGS_ALLOC);
file->private_data = dev;
@@ -132,8 +175,81 @@ static int ntsync_char_release(struct inode *inode, struct file *file)
static void init_obj(struct ntsync_obj *obj)
{
kref_init(&obj->refcount);
+ atomic_set(&obj->all_hint, 0);
spin_lock_init(&obj->lock);
INIT_LIST_HEAD(&obj->any_waiters);
+ INIT_LIST_HEAD(&obj->all_waiters);
+}
+
+static bool is_signaled(struct ntsync_obj *obj, __u32 owner) +static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
+{ +{
+ lockdep_assert_held(&obj->lock); + lockdep_assert_held(&obj->lock);
@ -162,11 +151,21 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ list_for_each_entry(entry, &obj->all_waiters, node) + list_for_each_entry(entry, &obj->all_waiters, node)
+ try_wake_all(dev, entry->q, obj); + try_wake_all(dev, entry->q, obj);
} +}
+
static void try_wake_any_sem(struct ntsync_obj *sem) static void try_wake_any_sem(struct ntsync_obj *sem)
@@ -234,14 +350,29 @@ static int ntsync_put_sem(struct ntsync_device *dev, void __user *argp) {
if (!sem) struct ntsync_q_entry *entry;
@@ -101,6 +213,7 @@ static int post_sem_state(struct ntsync_obj *sem, __u32 count)
static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
{
+ struct ntsync_device *dev = sem->dev;
__u32 __user *user_args = argp;
__u32 prev_count;
__u32 args;
@@ -112,14 +225,29 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
if (sem->type != NTSYNC_TYPE_SEM)
return -EINVAL; return -EINVAL;
- spin_lock(&sem->lock); - spin_lock(&sem->lock);
@ -175,11 +174,11 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ spin_lock_nest_lock(&sem->lock, &dev->wait_all_lock); + spin_lock_nest_lock(&sem->lock, &dev->wait_all_lock);
- prev_count = sem->u.sem.count; - prev_count = sem->u.sem.count;
- ret = put_sem_state(sem, args.count); - ret = post_sem_state(sem, args);
- if (!ret) - if (!ret)
- try_wake_any_sem(sem); - try_wake_any_sem(sem);
+ prev_count = sem->u.sem.count; + prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count); + ret = post_sem_state(sem, args);
+ if (!ret) { + if (!ret) {
+ try_wake_all_obj(dev, sem); + try_wake_all_obj(dev, sem);
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
@ -192,25 +191,34 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ spin_lock(&sem->lock); + spin_lock(&sem->lock);
+ +
+ prev_count = sem->u.sem.count; + prev_count = sem->u.sem.count;
+ ret = put_sem_state(sem, args.count); + ret = post_sem_state(sem, args);
+ if (!ret) + if (!ret)
+ try_wake_any_sem(sem); + try_wake_any_sem(sem);
+ +
+ spin_unlock(&sem->lock); + spin_unlock(&sem->lock);
+ } + }
put_obj(sem); if (!ret && put_user(prev_count, user_args))
ret = -EFAULT;
@@ -172,6 +300,8 @@ static struct ntsync_obj *ntsync_alloc_obj(struct ntsync_device *dev,
get_file(dev->file);
spin_lock_init(&obj->lock);
INIT_LIST_HEAD(&obj->any_waiters);
+ INIT_LIST_HEAD(&obj->all_waiters);
+ atomic_set(&obj->all_hint, 0);
@@ -278,7 +409,7 @@ static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout) return obj;
* Also, calculate the relative timeout. }
@@ -274,7 +404,7 @@ static int ntsync_schedule(const struct ntsync_q *q, ktime_t *timeout)
* Allocate and initialize the ntsync_q structure, but do not queue us yet.
*/ */
static int setup_wait(struct ntsync_device *dev, static int setup_wait(struct ntsync_device *dev,
- const struct ntsync_wait_args *args, - const struct ntsync_wait_args *args,
+ const struct ntsync_wait_args *args, bool all, + const struct ntsync_wait_args *args, bool all,
ktime_t *ret_timeout, struct ntsync_q **ret_q) struct ntsync_q **ret_q)
{ {
const __u32 count = args->count; const __u32 count = args->count;
@@ -321,6 +452,7 @@ static int setup_wait(struct ntsync_device *dev, @@ -298,6 +428,7 @@ static int setup_wait(struct ntsync_device *dev,
q->task = current; q->task = current;
q->owner = args->owner; q->owner = args->owner;
atomic_set(&q->signaled, -1); atomic_set(&q->signaled, -1);
@ -218,7 +226,7 @@ index 2e8d3c2d51a4..2685363fae9e 100644
q->count = count; q->count = count;
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
@@ -330,6 +462,16 @@ static int setup_wait(struct ntsync_device *dev, @@ -307,6 +438,16 @@ static int setup_wait(struct ntsync_device *dev,
if (!obj) if (!obj)
goto err; goto err;
@ -235,16 +243,16 @@ index 2e8d3c2d51a4..2685363fae9e 100644
entry->obj = obj; entry->obj = obj;
entry->q = q; entry->q = q;
entry->index = i; entry->index = i;
@@ -370,7 +512,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp) @@ -343,7 +484,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
if (copy_from_user(&args, argp, sizeof(args))) if (copy_from_user(&args, argp, sizeof(args)))
return -EFAULT; return -EFAULT;
- ret = setup_wait(dev, &args, &timeout, &q); - ret = setup_wait(dev, &args, &q);
+ ret = setup_wait(dev, &args, false, &timeout, &q); + ret = setup_wait(dev, &args, false, &q);
if (ret < 0) if (ret < 0)
return ret; return ret;
@@ -432,6 +574,87 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp) @@ -406,6 +547,89 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
return ret; return ret;
} }
@ -260,7 +268,7 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
+ +
+ ret = setup_wait(dev, &args, true, &timeout, &q); + ret = setup_wait(dev, &args, true, &q);
+ if (ret < 0) + if (ret < 0)
+ return ret; + return ret;
+ +
@ -276,7 +284,8 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ /* + /*
+ * obj->all_waiters is protected by dev->wait_all_lock rather + * obj->all_waiters is protected by dev->wait_all_lock rather
+ * than obj->lock, so there is no need to acquire it here. + * than obj->lock, so there is no need to acquire obj->lock
+ * here.
+ */ + */
+ list_add_tail(&entry->node, &obj->all_waiters); + list_add_tail(&entry->node, &obj->all_waiters);
+ } + }
@ -289,7 +298,8 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ +
+ /* sleep */ + /* sleep */
+ +
+ ret = ntsync_schedule(q, args.timeout ? &timeout : NULL); + timeout = ns_to_ktime(args.timeout);
+ ret = ntsync_schedule(q, args.timeout == U64_MAX ? NULL : &timeout);
+ +
+ /* and finally, unqueue */ + /* and finally, unqueue */
+ +
@ -329,29 +339,39 @@ index 2e8d3c2d51a4..2685363fae9e 100644
+ return ret; + return ret;
+} +}
+ +
static long ntsync_char_ioctl(struct file *file, unsigned int cmd, static int ntsync_char_open(struct inode *inode, struct file *file)
unsigned long parm)
{ {
@@ -445,6 +668,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, struct ntsync_device *dev;
return ntsync_delete(dev, argp); @@ -414,6 +638,8 @@ static int ntsync_char_open(struct inode *inode, struct file *file)
case NTSYNC_IOC_PUT_SEM: if (!dev)
return ntsync_put_sem(dev, argp); return -ENOMEM;
+ spin_lock_init(&dev->wait_all_lock);
+
file->private_data = dev;
dev->file = file;
return nonseekable_open(inode, file);
@@ -437,6 +663,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp);
+ case NTSYNC_IOC_WAIT_ALL: + case NTSYNC_IOC_WAIT_ALL:
+ return ntsync_wait_all(dev, argp); + return ntsync_wait_all(dev, argp);
case NTSYNC_IOC_WAIT_ANY: case NTSYNC_IOC_WAIT_ANY:
return ntsync_wait_any(dev, argp); return ntsync_wait_any(dev, argp);
default: default:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 10f07da7864e..a5bed5a39b21 100644 index 9cd1dd05d971..524404f6aceb 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -36,5 +36,7 @@ struct ntsync_wait_args { @@ -29,6 +29,7 @@ struct ntsync_wait_args {
struct ntsync_sem_args)
#define NTSYNC_IOC_WAIT_ANY _IOWR(NTSYNC_IOC_BASE, 3, \ #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
struct ntsync_wait_args) #define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
+#define NTSYNC_IOC_WAIT_ALL _IOWR(NTSYNC_IOC_BASE, 4, \ +#define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
+ struct ntsync_wait_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#endif
-- --
2.43.0 2.43.0

93
linux-gcc/linux6.7-zen/patches/0006-[PATCH_RFC_7_9]_ntsync:_Introduce_NTSYNC_IOC_CREATE_MUTEX..patch → linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0005.patch
View File

@ -1,16 +1,35 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 6/29] ntsync: Introduce NTSYNC_IOC_CREATE_MUTEX.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:33 -0600
Message-Id: <20240131021356.10322-7-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtCreateMutant(). This corresponds to the NT syscall NtCreateMutant().
An NT mutex is recursive, with a 32-bit recursion counter. When acquired via
NtWaitForMultipleObjects(), the recursion counter is incremented by one.
The OS records the thread which acquired it. However, in order to keep this
driver self-contained, the owning thread ID is managed by user-space, and passed
as a parameter to all relevant ioctls.
The initial owner and recursion count, if any, are specified when the mutex is
created.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
--- ---
drivers/misc/ntsync.c | 72 +++++++++++++++++++++++++++++++++++++ drivers/misc/ntsync.c | 67 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 8 +++++ include/uapi/linux/ntsync.h | 7 ++++
2 files changed, 80 insertions(+) 2 files changed, 74 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 2685363fae9e..d48f2ef41341 100644 index b86d62094344..484219a266ae 100644
--- a/drivers/misc/ntsync.c --- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c
@@ -16,6 +16,7 @@ @@ -17,6 +17,7 @@
enum ntsync_type { enum ntsync_type {
NTSYNC_TYPE_SEM, NTSYNC_TYPE_SEM,
@ -18,7 +37,7 @@ index 2685363fae9e..d48f2ef41341 100644
}; };
struct ntsync_obj { struct ntsync_obj {
@@ -60,6 +61,10 @@ struct ntsync_obj { @@ -33,6 +34,10 @@ struct ntsync_obj {
__u32 count; __u32 count;
__u32 max; __u32 max;
} sem; } sem;
@ -27,9 +46,9 @@ index 2685363fae9e..d48f2ef41341 100644
+ __u32 owner; + __u32 owner;
+ } mutex; + } mutex;
} u; } u;
};
@@ -188,6 +193,10 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner) /*
@@ -112,6 +117,10 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
switch (obj->type) { switch (obj->type) {
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
return !!obj->u.sem.count; return !!obj->u.sem.count;
@ -40,7 +59,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
WARN(1, "bad object type %#x\n", obj->type); WARN(1, "bad object type %#x\n", obj->type);
@@ -230,6 +239,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q, @@ -154,6 +163,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
obj->u.sem.count--; obj->u.sem.count--;
break; break;
@ -51,7 +70,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
} }
wake_up_process(q->task); wake_up_process(q->task);
@@ -271,6 +284,28 @@ static void try_wake_any_sem(struct ntsync_obj *sem) @@ -195,6 +208,28 @@ static void try_wake_any_sem(struct ntsync_obj *sem)
} }
} }
@ -77,11 +96,11 @@ index 2685363fae9e..d48f2ef41341 100644
+ } + }
+} +}
+ +
static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) /*
{ * Actually change the semaphore state, returning -EOVERFLOW if it is made
struct ntsync_sem_args __user *user_args = argp; * invalid.
@@ -303,6 +338,38 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp) @@ -352,6 +387,33 @@ static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
return put_user(id, &user_args->sem); return put_user(fd, &user_args->sem);
} }
+static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp) +static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp)
@ -89,8 +108,7 @@ index 2685363fae9e..d48f2ef41341 100644
+ struct ntsync_mutex_args __user *user_args = argp; + struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args; + struct ntsync_mutex_args args;
+ struct ntsync_obj *mutex; + struct ntsync_obj *mutex;
+ __u32 id; + int fd;
+ int ret;
+ +
+ if (copy_from_user(&args, argp, sizeof(args))) + if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT; + return -EFAULT;
@ -98,28 +116,24 @@ index 2685363fae9e..d48f2ef41341 100644
+ if (!args.owner != !args.count) + if (!args.owner != !args.count)
+ return -EINVAL; + return -EINVAL;
+ +
+ mutex = kzalloc(sizeof(*mutex), GFP_KERNEL); + mutex = ntsync_alloc_obj(dev, NTSYNC_TYPE_MUTEX);
+ if (!mutex) + if (!mutex)
+ return -ENOMEM; + return -ENOMEM;
+
+ init_obj(mutex);
+ mutex->type = NTSYNC_TYPE_MUTEX;
+ mutex->u.mutex.count = args.count; + mutex->u.mutex.count = args.count;
+ mutex->u.mutex.owner = args.owner; + mutex->u.mutex.owner = args.owner;
+ + fd = ntsync_obj_get_fd(mutex);
+ ret = xa_alloc(&dev->objects, &id, mutex, xa_limit_32b, GFP_KERNEL); + if (fd < 0) {
+ if (ret < 0) {
+ kfree(mutex); + kfree(mutex);
+ return ret; + return fd;
+ } + }
+ +
+ return put_user(id, &user_args->mutex); + return put_user(fd, &user_args->mutex);
+} +}
+ +
static int ntsync_delete(struct ntsync_device *dev, void __user *argp) static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
{ {
struct ntsync_obj *obj; struct file *file = fget(fd);
@@ -497,6 +564,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj) @@ -469,6 +531,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj)
case NTSYNC_TYPE_SEM: case NTSYNC_TYPE_SEM:
try_wake_any_sem(obj); try_wake_any_sem(obj);
break; break;
@ -129,7 +143,7 @@ index 2685363fae9e..d48f2ef41341 100644
} }
} }
@@ -662,6 +732,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd, @@ -661,6 +726,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
void __user *argp = (void __user *)parm; void __user *argp = (void __user *)parm;
switch (cmd) { switch (cmd) {
@ -137,9 +151,9 @@ index 2685363fae9e..d48f2ef41341 100644
+ return ntsync_create_mutex(dev, argp); + return ntsync_create_mutex(dev, argp);
case NTSYNC_IOC_CREATE_SEM: case NTSYNC_IOC_CREATE_SEM:
return ntsync_create_sem(dev, argp); return ntsync_create_sem(dev, argp);
case NTSYNC_IOC_DELETE: case NTSYNC_IOC_WAIT_ALL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a5bed5a39b21..26d1b3d4847f 100644 index 524404f6aceb..d68f24fd75a2 100644
--- a/include/uapi/linux/ntsync.h --- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h
@@ -16,6 +16,12 @@ struct ntsync_sem_args { @@ -16,6 +16,12 @@ struct ntsync_sem_args {
@ -155,13 +169,14 @@ index a5bed5a39b21..26d1b3d4847f 100644
struct ntsync_wait_args { struct ntsync_wait_args {
__u64 timeout; __u64 timeout;
__u64 objs; __u64 objs;
@@ -38,5 +44,7 @@ struct ntsync_wait_args { @@ -30,6 +36,7 @@ struct ntsync_wait_args {
struct ntsync_wait_args) #define NTSYNC_IOC_CREATE_SEM _IOWR('N', 0x80, struct ntsync_sem_args)
#define NTSYNC_IOC_WAIT_ALL _IOWR(NTSYNC_IOC_BASE, 4, \ #define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
struct ntsync_wait_args) #define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
+#define NTSYNC_IOC_CREATE_MUTEX _IOWR(NTSYNC_IOC_BASE, 5, \ +#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
+ struct ntsync_mutex_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#endif
-- --
2.43.0 2.43.0

117
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0006.patch Normal file
View File

@ -0,0 +1,117 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 7/29] ntsync: Introduce NTSYNC_IOC_MUTEX_UNLOCK.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:34 -0600
Message-Id: <20240131021356.10322-8-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtReleaseMutant().
This syscall decrements the mutex's recursion count by one, and returns the
previous value. If the mutex is not owned by the given owner ID, the function
instead fails and returns -EPERM.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 64 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 65 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 484219a266ae..1770ec4008af 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -290,6 +290,68 @@ static int ntsync_sem_post(struct ntsync_obj *sem, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state, returning -EPERM if not the owner.
+ */
+static int unlock_mutex_state(struct ntsync_obj *mutex,
+ const struct ntsync_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 ntsync_mutex_unlock(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_device *dev = mutex->dev;
+ struct ntsync_mutex_args args;
+ __u32 prev_count;
+ int ret;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+ if (!args.owner)
+ return -EINVAL;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_lock);
+
+ prev_count = mutex->u.mutex.count;
+ ret = unlock_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 = unlock_mutex_state(mutex, &args);
+ if (!ret)
+ try_wake_any_mutex(mutex);
+
+ spin_unlock(&mutex->lock);
+ }
+
+ if (!ret && put_user(prev_count, &user_args->count))
+ ret = -EFAULT;
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -309,6 +371,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_SEM_POST:
return ntsync_sem_post(obj, argp);
+ case NTSYNC_IOC_MUTEX_UNLOCK:
+ return ntsync_mutex_unlock(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index d68f24fd75a2..a3f5f4f13798 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -39,5 +39,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
+#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#endif
--
2.43.0

176
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0007.patch Normal file
View File

@ -0,0 +1,176 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 8/29] ntsync: Introduce NTSYNC_IOC_MUTEX_KILL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:35 -0600
Message-Id: <20240131021356.10322-9-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This does not correspond to any NT syscall. Rather, when a thread dies, it
should be called by the NT emulator for each mutex.
NT mutexes are robust (in the pthread sense). When an NT thread dies, any
mutexes it owned are immediately released. Acquisition of those mutexes by other
threads will return a special value indicating that the mutex was abandoned,
like EOWNERDEAD returned from pthread_mutex_lock(), and EOWNERDEAD is indeed
used here for that purpose.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 71 +++++++++++++++++++++++++++++++++++--
include/uapi/linux/ntsync.h | 1 +
2 files changed, 70 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 1770ec4008af..aadf01c65ca0 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -37,6 +37,7 @@ struct ntsync_obj {
struct {
__u32 count;
__u32 owner;
+ bool ownerdead;
} mutex;
} u;
@@ -89,6 +90,7 @@ struct ntsync_q {
atomic_t signaled;
bool all;
+ bool ownerdead;
__u32 count;
struct ntsync_q_entry entries[];
};
@@ -164,6 +166,9 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.sem.count--;
break;
case NTSYNC_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;
@@ -223,6 +228,9 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
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);
@@ -352,6 +360,62 @@ static int ntsync_mutex_unlock(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+/*
+ * Actually change the mutex state to mark its owner as dead,
+ * returning -EPERM if not the owner.
+ */
+static int kill_mutex_state(struct ntsync_obj *mutex, __u32 owner)
+{
+ lockdep_assert_held(&mutex->lock);
+
+ if (mutex->u.mutex.owner != owner)
+ return -EPERM;
+
+ mutex->u.mutex.ownerdead = true;
+ mutex->u.mutex.owner = 0;
+ mutex->u.mutex.count = 0;
+ return 0;
+}
+
+static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_device *dev = mutex->dev;
+ __u32 owner;
+ int ret;
+
+ if (get_user(owner, (__u32 __user *)argp))
+ return -EFAULT;
+ if (!owner)
+ return -EINVAL;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ if (atomic_read(&mutex->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&mutex->lock, &dev->wait_all_lock);
+
+ ret = kill_mutex_state(mutex, owner);
+ 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);
+
+ ret = kill_mutex_state(mutex, owner);
+ if (!ret)
+ try_wake_any_mutex(mutex);
+
+ spin_unlock(&mutex->lock);
+ }
+
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -373,6 +437,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_sem_post(obj, argp);
case NTSYNC_IOC_MUTEX_UNLOCK:
return ntsync_mutex_unlock(obj, argp);
+ case NTSYNC_IOC_MUTEX_KILL:
+ return ntsync_mutex_kill(obj, argp);
default:
return -ENOIOCTLCMD;
}
@@ -555,6 +621,7 @@ static int setup_wait(struct ntsync_device *dev,
q->owner = args->owner;
atomic_set(&q->signaled, -1);
q->all = all;
+ q->ownerdead = false;
q->count = count;
for (i = 0; i < count; i++) {
@@ -664,7 +731,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
@@ -747,7 +814,7 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
struct ntsync_wait_args __user *user_args = argp;
/* even if we caught a signal, we need to communicate success */
- ret = 0;
+ ret = q->ownerdead ? -EOWNERDEAD : 0;
if (put_user(signaled, &user_args->index))
ret = -EFAULT;
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a3f5f4f13798..3861397c6c2f 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -40,5 +40,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
+#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#endif
--
2.43.0

175
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0008.patch Normal file
View File

@ -0,0 +1,175 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 9/29] ntsync: Introduce NTSYNC_IOC_CREATE_EVENT.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:36 -0600
Message-Id: <20240131021356.10322-10-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This correspond to the NT syscall NtCreateEvent().
An NT event holds a single bit of state denoting whether it is signaled or
unsignaled.
There are two types of events: manual-reset and automatic-reset. When an
automatic-reset event is acquired via a wait function, its state is reset to
unsignaled. Manual-reset events are not affected by wait functions.
Whether the event is manual-reset, and its initial state, are specified at
creation time.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 60 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 7 +++++
2 files changed, 67 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index aadf01c65ca0..c719ddd9f6d7 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -18,6 +18,7 @@
enum ntsync_type {
NTSYNC_TYPE_SEM,
NTSYNC_TYPE_MUTEX,
+ NTSYNC_TYPE_EVENT,
};
struct ntsync_obj {
@@ -39,6 +40,10 @@ struct ntsync_obj {
__u32 owner;
bool ownerdead;
} mutex;
+ struct {
+ bool manual;
+ bool signaled;
+ } event;
} u;
/*
@@ -123,6 +128,8 @@ static bool is_signaled(struct ntsync_obj *obj, __u32 owner)
if (obj->u.mutex.owner && obj->u.mutex.owner != owner)
return false;
return obj->u.mutex.count < UINT_MAX;
+ case NTSYNC_TYPE_EVENT:
+ return obj->u.event.signaled;
}
WARN(1, "bad object type %#x\n", obj->type);
@@ -172,6 +179,10 @@ static void try_wake_all(struct ntsync_device *dev, struct ntsync_q *q,
obj->u.mutex.count++;
obj->u.mutex.owner = q->owner;
break;
+ case NTSYNC_TYPE_EVENT:
+ if (!obj->u.event.manual)
+ obj->u.event.signaled = false;
+ break;
}
}
wake_up_process(q->task);
@@ -238,6 +249,26 @@ static void try_wake_any_mutex(struct ntsync_obj *mutex)
}
}
+static void try_wake_any_event(struct ntsync_obj *event)
+{
+ struct ntsync_q_entry *entry;
+
+ lockdep_assert_held(&event->lock);
+
+ list_for_each_entry(entry, &event->any_waiters, node) {
+ struct ntsync_q *q = entry->q;
+
+ if (!event->u.event.signaled)
+ break;
+
+ if (atomic_cmpxchg(&q->signaled, -1, entry->index) == -1) {
+ if (!event->u.event.manual)
+ event->u.event.signaled = false;
+ wake_up_process(q->task);
+ }
+ }
+}
+
/*
* Actually change the semaphore state, returning -EOVERFLOW if it is made
* invalid.
@@ -544,6 +575,30 @@ static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp)
return put_user(fd, &user_args->mutex);
}
+static int ntsync_create_event(struct ntsync_device *dev, void __user *argp)
+{
+ struct ntsync_event_args __user *user_args = argp;
+ struct ntsync_event_args args;
+ struct ntsync_obj *event;
+ int fd;
+
+ if (copy_from_user(&args, argp, sizeof(args)))
+ return -EFAULT;
+
+ event = ntsync_alloc_obj(dev, NTSYNC_TYPE_EVENT);
+ if (!event)
+ return -ENOMEM;
+ event->u.event.manual = args.manual;
+ event->u.event.signaled = args.signaled;
+ fd = ntsync_obj_get_fd(event);
+ if (fd < 0) {
+ kfree(event);
+ return fd;
+ }
+
+ return put_user(fd, &user_args->event);
+}
+
static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
{
struct file *file = fget(fd);
@@ -665,6 +720,9 @@ static void try_wake_any_obj(struct ntsync_obj *obj)
case NTSYNC_TYPE_MUTEX:
try_wake_any_mutex(obj);
break;
+ case NTSYNC_TYPE_EVENT:
+ try_wake_any_event(obj);
+ break;
}
}
@@ -857,6 +915,8 @@ static long ntsync_char_ioctl(struct file *file, unsigned int cmd,
void __user *argp = (void __user *)parm;
switch (cmd) {
+ case NTSYNC_IOC_CREATE_EVENT:
+ return ntsync_create_event(dev, argp);
case NTSYNC_IOC_CREATE_MUTEX:
return ntsync_create_mutex(dev, argp);
case NTSYNC_IOC_CREATE_SEM:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 3861397c6c2f..b8cf503365ef 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -22,6 +22,12 @@ struct ntsync_mutex_args {
__u32 count;
};
+struct ntsync_event_args {
+ __u32 event;
+ __u32 manual;
+ __u32 signaled;
+};
+
struct ntsync_wait_args {
__u64 timeout;
__u64 objs;
@@ -37,6 +43,7 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_WAIT_ANY _IOWR('N', 0x82, struct ntsync_wait_args)
#define NTSYNC_IOC_WAIT_ALL _IOWR('N', 0x83, struct ntsync_wait_args)
#define NTSYNC_IOC_CREATE_MUTEX _IOWR('N', 0x84, struct ntsync_sem_args)
+#define NTSYNC_IOC_CREATE_EVENT _IOWR('N', 0x87, struct ntsync_event_args)
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
--
2.43.0

88
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0009.patch Normal file
View File

@ -0,0 +1,88 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 10/29] ntsync: Introduce NTSYNC_IOC_EVENT_SET.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:37 -0600
Message-Id: <20240131021356.10322-11-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtSetEvent().
This sets the event to the signaled state, and returns its previous state.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 37 +++++++++++++++++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 38 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index c719ddd9f6d7..b2da50989953 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -447,6 +447,41 @@ static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
+{
+ struct ntsync_device *dev = event->dev;
+ __u32 prev_state;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ if (atomic_read(&event->all_hint) > 0) {
+ spin_lock(&dev->wait_all_lock);
+ spin_lock_nest_lock(&event->lock, &dev->wait_all_lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = true;
+ try_wake_all_obj(dev, event);
+ try_wake_any_event(event);
+
+ spin_unlock(&event->lock);
+ spin_unlock(&dev->wait_all_lock);
+ } else {
+ spin_lock(&event->lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = true;
+ try_wake_any_event(event);
+
+ spin_unlock(&event->lock);
+ }
+
+ if (put_user(prev_state, (__u32 __user *)argp))
+ return -EFAULT;
+
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -470,6 +505,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
+ case NTSYNC_IOC_EVENT_SET:
+ return ntsync_event_set(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index b8cf503365ef..782057552483 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -48,5 +48,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_SEM_POST _IOWR('N', 0x81, __u32)
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
+#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#endif
--
2.43.0

73
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0010.patch Normal file
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@ -0,0 +1,73 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 11/29] ntsync: Introduce NTSYNC_IOC_EVENT_RESET.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:38 -0600
Message-Id: <20240131021356.10322-12-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtResetEvent().
This sets the event to the unsignaled state, and returns its previous state.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 22 ++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index b2da50989953..009d927739b8 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -482,6 +482,26 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
return 0;
}
+static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp)
+{
+ __u32 prev_state;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ spin_lock(&event->lock);
+
+ prev_state = event->u.event.signaled;
+ event->u.event.signaled = false;
+
+ spin_unlock(&event->lock);
+
+ if (put_user(prev_state, (__u32 __user *)argp))
+ return -EFAULT;
+
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -507,6 +527,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_kill(obj, argp);
case NTSYNC_IOC_EVENT_SET:
return ntsync_event_set(obj, argp);
+ case NTSYNC_IOC_EVENT_RESET:
+ return ntsync_event_reset(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 782057552483..f2d7507d8438 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -49,5 +49,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args)
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
+#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#endif
--
2.43.0

80
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0011.patch Normal file
View File

@ -0,0 +1,80 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 12/29] ntsync: Introduce NTSYNC_IOC_EVENT_PULSE.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:39 -0600
Message-Id: <20240131021356.10322-13-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtPulseEvent().
This wakes up any waiters as if the event had been set, but does not set the
event, instead resetting it if it had been signalled. Thus, for a manual-reset
event, all waiters are woken, whereas for an auto-reset event, at most one
waiter is woken.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 10 ++++++++--
include/uapi/linux/ntsync.h | 1 +
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 009d927739b8..240ae858fa96 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -447,7 +447,7 @@ static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
-static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
+static int ntsync_event_set(struct ntsync_obj *event, void __user *argp, bool pulse)
{
struct ntsync_device *dev = event->dev;
__u32 prev_state;
@@ -463,6 +463,8 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
event->u.event.signaled = true;
try_wake_all_obj(dev, event);
try_wake_any_event(event);
+ if (pulse)
+ event->u.event.signaled = false;
spin_unlock(&event->lock);
spin_unlock(&dev->wait_all_lock);
@@ -472,6 +474,8 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp)
prev_state = event->u.event.signaled;
event->u.event.signaled = true;
try_wake_any_event(event);
+ if (pulse)
+ event->u.event.signaled = false;
spin_unlock(&event->lock);
}
@@ -526,9 +530,11 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
case NTSYNC_IOC_EVENT_SET:
- return ntsync_event_set(obj, argp);
+ return ntsync_event_set(obj, argp, false);
case NTSYNC_IOC_EVENT_RESET:
return ntsync_event_reset(obj, argp);
+ case NTSYNC_IOC_EVENT_PULSE:
+ return ntsync_event_set(obj, argp, true);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index f2d7507d8438..598f894f868d 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -50,5 +50,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32)
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
+#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#endif
--
2.43.0

72
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0012.patch Normal file
View File

@ -0,0 +1,72 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 13/29] ntsync: Introduce NTSYNC_IOC_SEM_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:40 -0600
Message-Id: <20240131021356.10322-14-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQuerySemaphore().
This returns the current count and maximum count of the semaphore.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 21 +++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 240ae858fa96..6dccfbfb2512 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -506,6 +506,25 @@ static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp)
return 0;
}
+static int ntsync_sem_read(struct ntsync_obj *sem, void __user *argp)
+{
+ struct ntsync_sem_args __user *user_args = argp;
+ struct ntsync_sem_args args;
+
+ if (sem->type != NTSYNC_TYPE_SEM)
+ return -EINVAL;
+
+ args.sem = 0;
+ spin_lock(&sem->lock);
+ args.count = sem->u.sem.count;
+ args.max = sem->u.sem.max;
+ spin_unlock(&sem->lock);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -525,6 +544,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case NTSYNC_IOC_SEM_POST:
return ntsync_sem_post(obj, argp);
+ case NTSYNC_IOC_SEM_READ:
+ return ntsync_sem_read(obj, argp);
case NTSYNC_IOC_MUTEX_UNLOCK:
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 598f894f868d..6017f621687e 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -51,5 +51,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32)
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
+#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
#endif
--
2.43.0

74
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0013.patch Normal file
View File

@ -0,0 +1,74 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 14/29] ntsync: Introduce NTSYNC_IOC_MUTEX_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:41 -0600
Message-Id: <20240131021356.10322-15-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQueryMutant().
This returns the recursion count, owner, and abandoned state of the mutex.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 23 +++++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 6dccfbfb2512..7f5f96ec7c69 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -525,6 +525,27 @@ static int ntsync_sem_read(struct ntsync_obj *sem, void __user *argp)
return 0;
}
+static int ntsync_mutex_read(struct ntsync_obj *mutex, void __user *argp)
+{
+ struct ntsync_mutex_args __user *user_args = argp;
+ struct ntsync_mutex_args args;
+ int ret;
+
+ if (mutex->type != NTSYNC_TYPE_MUTEX)
+ return -EINVAL;
+
+ args.mutex = 0;
+ 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);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return ret;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -550,6 +571,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_mutex_unlock(obj, argp);
case NTSYNC_IOC_MUTEX_KILL:
return ntsync_mutex_kill(obj, argp);
+ case NTSYNC_IOC_MUTEX_READ:
+ return ntsync_mutex_read(obj, argp);
case NTSYNC_IOC_EVENT_SET:
return ntsync_event_set(obj, argp, false);
case NTSYNC_IOC_EVENT_RESET:
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 6017f621687e..a1d0ef581212 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -52,5 +52,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32)
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
+#define NTSYNC_IOC_MUTEX_READ _IOR ('N', 0x8c, struct ntsync_mutex_args)
#endif
--
2.43.0

72
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0014.patch Normal file
View File

@ -0,0 +1,72 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 15/29] ntsync: Introduce NTSYNC_IOC_EVENT_READ.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:42 -0600
Message-Id: <20240131021356.10322-16-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
This corresponds to the NT syscall NtQueryEvent().
This returns the signaled state of the event and whether it is manual-reset.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 21 +++++++++++++++++++++
include/uapi/linux/ntsync.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 7f5f96ec7c69..5439c1c9e90f 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -546,6 +546,25 @@ static int ntsync_mutex_read(struct ntsync_obj *mutex, void __user *argp)
return ret;
}
+static int ntsync_event_read(struct ntsync_obj *event, void __user *argp)
+{
+ struct ntsync_event_args __user *user_args = argp;
+ struct ntsync_event_args args;
+
+ if (event->type != NTSYNC_TYPE_EVENT)
+ return -EINVAL;
+
+ args.event = 0;
+ spin_lock(&event->lock);
+ args.manual = event->u.event.manual;
+ args.signaled = event->u.event.signaled;
+ spin_unlock(&event->lock);
+
+ if (copy_to_user(user_args, &args, sizeof(args)))
+ return -EFAULT;
+ return 0;
+}
+
static int ntsync_obj_release(struct inode *inode, struct file *file)
{
struct ntsync_obj *obj = file->private_data;
@@ -579,6 +598,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd,
return ntsync_event_reset(obj, argp);
case NTSYNC_IOC_EVENT_PULSE:
return ntsync_event_set(obj, argp, true);
+ case NTSYNC_IOC_EVENT_READ:
+ return ntsync_event_read(obj, argp);
default:
return -ENOIOCTLCMD;
}
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index a1d0ef581212..582d33b0dcac 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -53,5 +53,6 @@ struct ntsync_wait_args {
#define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32)
#define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args)
#define NTSYNC_IOC_MUTEX_READ _IOR ('N', 0x8c, struct ntsync_mutex_args)
+#define NTSYNC_IOC_EVENT_READ _IOR ('N', 0x8d, struct ntsync_event_args)
#endif
--
2.43.0

194
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0015.patch Normal file
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@ -0,0 +1,194 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 16/29] ntsync: Introduce alertable waits.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:43 -0600
Message-Id: <20240131021356.10322-17-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
NT waits can optionally be made "alertable". This is a special channel for
thread wakeup that is mildly similar to SIGIO. A thread has an internal single
bit of "alerted" state, and if a thread is made alerted while an alertable wait,
the wait will return a special value, consume the "alerted" state, and will not
consume any of its objects.
Alerts are implemented using events; the user-space NT emulator is expected to
create an internal ntsync event for each thread and pass that event to wait
functions.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
drivers/misc/ntsync.c | 68 ++++++++++++++++++++++++++++++++-----
include/uapi/linux/ntsync.h | 2 +-
2 files changed, 60 insertions(+), 10 deletions(-)
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 5439c1c9e90f..1e619e1ce6a6 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -784,22 +784,29 @@ static int setup_wait(struct ntsync_device *dev,
const struct ntsync_wait_args *args, bool all,
struct ntsync_q **ret_q)
{
+ int fds[NTSYNC_MAX_WAIT_COUNT + 1];
const __u32 count = args->count;
- int fds[NTSYNC_MAX_WAIT_COUNT];
struct ntsync_q *q;
+ __u32 total_count;
__u32 i, j;
- if (!args->owner || args->pad)
+ if (!args->owner)
return -EINVAL;
if (args->count > NTSYNC_MAX_WAIT_COUNT)
return -EINVAL;
+ total_count = count;
+ if (args->alert)
+ total_count++;
+
if (copy_from_user(fds, u64_to_user_ptr(args->objs),
array_size(count, sizeof(*fds))))
return -EFAULT;
+ if (args->alert)
+ fds[count] = args->alert;
- q = kmalloc(struct_size(q, entries, count), GFP_KERNEL);
+ q = kmalloc(struct_size(q, entries, total_count), GFP_KERNEL);
if (!q)
return -ENOMEM;
q->task = current;
@@ -809,7 +816,7 @@ static int setup_wait(struct ntsync_device *dev,
q->ownerdead = false;
q->count = count;
- for (i = 0; i < count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = get_obj(dev, fds[i]);
@@ -860,9 +867,9 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
{
struct ntsync_wait_args args;
struct ntsync_q *q;
+ __u32 i, total_count;
ktime_t timeout;
int signaled;
- __u32 i;
int ret;
if (copy_from_user(&args, argp, sizeof(args)))
@@ -872,9 +879,13 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
if (ret < 0)
return ret;
+ total_count = args.count;
+ if (args.alert)
+ total_count++;
+
/* queue ourselves */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = entry->obj;
@@ -883,9 +894,15 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
spin_unlock(&obj->lock);
}
- /* check if we are already signaled */
+ /*
+ * Check if we are already signaled.
+ *
+ * Note that the API requires that normal objects are checked before
+ * the alert event. Hence we queue the alert event last, and check
+ * objects in order.
+ */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_obj *obj = q->entries[i].obj;
if (atomic_read(&q->signaled) != -1)
@@ -903,7 +920,7 @@ static int ntsync_wait_any(struct ntsync_device *dev, void __user *argp)
/* and finally, unqueue */
- for (i = 0; i < args.count; i++) {
+ for (i = 0; i < total_count; i++) {
struct ntsync_q_entry *entry = &q->entries[i];
struct ntsync_obj *obj = entry->obj;
@@ -964,6 +981,14 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
*/
list_add_tail(&entry->node, &obj->all_waiters);
}
+ if (args.alert) {
+ struct ntsync_q_entry *entry = &q->entries[args.count];
+ struct ntsync_obj *obj = entry->obj;
+
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_lock);
+ list_add_tail(&entry->node, &obj->any_waiters);
+ spin_unlock(&obj->lock);
+ }
/* check if we are already signaled */
@@ -971,6 +996,21 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
spin_unlock(&dev->wait_all_lock);
+ /*
+ * Check if the alert event is signaled, making sure to do so only
+ * after checking if the other objects are signaled.
+ */
+
+ if (args.alert) {
+ struct ntsync_obj *obj = q->entries[args.count].obj;
+
+ if (atomic_read(&q->signaled) == -1) {
+ spin_lock(&obj->lock);
+ try_wake_any_obj(obj);
+ spin_unlock(&obj->lock);
+ }
+ }
+
/* sleep */
timeout = ns_to_ktime(args.timeout);
@@ -994,6 +1034,16 @@ static int ntsync_wait_all(struct ntsync_device *dev, void __user *argp)
put_obj(obj);
}
+ if (args.alert) {
+ struct ntsync_q_entry *entry = &q->entries[args.count];
+ struct ntsync_obj *obj = entry->obj;
+
+ spin_lock_nest_lock(&obj->lock, &dev->wait_all_lock);
+ list_del(&entry->node);
+ spin_unlock(&obj->lock);
+
+ put_obj(obj);
+ }
spin_unlock(&dev->wait_all_lock);
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index 582d33b0dcac..7c91af7011e4 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -34,7 +34,7 @@ struct ntsync_wait_args {
__u32 count;
__u32 owner;
__u32 index;
- __u32 pad;
+ __u32 alert;
};
#define NTSYNC_MAX_WAIT_COUNT 64
--
2.43.0

213
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0016.patch Normal file
View File

@ -0,0 +1,213 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 17/29] selftests: ntsync: Add some tests for
semaphore state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:44 -0600
Message-Id: <20240131021356.10322-18-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
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>
---
tools/testing/selftests/Makefile | 1 +
.../testing/selftests/drivers/ntsync/Makefile | 8 +
tools/testing/selftests/drivers/ntsync/config | 1 +
.../testing/selftests/drivers/ntsync/ntsync.c | 143 ++++++++++++++++++
4 files changed, 153 insertions(+)
create mode 100644 tools/testing/selftests/drivers/ntsync/Makefile
create mode 100644 tools/testing/selftests/drivers/ntsync/config
create mode 100644 tools/testing/selftests/drivers/ntsync/ntsync.c
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 15b6a111c3be..6c714a4e6478 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -15,6 +15,7 @@ TARGETS += cpu-hotplug
TARGETS += damon
TARGETS += dmabuf-heaps
TARGETS += drivers/dma-buf
+TARGETS += drivers/ntsync
TARGETS += drivers/s390x/uvdevice
TARGETS += drivers/net/bonding
TARGETS += drivers/net/team
diff --git a/tools/testing/selftests/drivers/ntsync/Makefile b/tools/testing/selftests/drivers/ntsync/Makefile
new file mode 100644
index 000000000000..a34da5ccacf0
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/Makefile
@@ -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
diff --git a/tools/testing/selftests/drivers/ntsync/config b/tools/testing/selftests/drivers/ntsync/config
new file mode 100644
index 000000000000..60539c826d06
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/config
@@ -0,0 +1 @@
+CONFIG_WINESYNC=y
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
new file mode 100644
index 000000000000..6ceb48fb42e3
--- /dev/null
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Various unit tests for the "ntsync" synchronization primitive driver.
+ *
+ * Copyright (C) 2021-2022 Elizabeth Figura
+ */
+
+#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);
+
+ close(sem);
+
+ close(fd);
+}
+
+TEST_HARNESS_MAIN
--
2.43.0

218
linux-gcc/linux6.7-zen/patches/v2_20240130_zfigura_nt_synchronization_primitive_driver_0017.patch Normal file
View File

@ -0,0 +1,218 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 18/29] selftests: ntsync: Add some tests for mutex
state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:45 -0600
Message-Id: <20240131021356.10322-19-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test mutex-specific ioctls NTSYNC_IOC_MUTEX_UNLOCK and NTSYNC_IOC_MUTEX_READ,
and waiting on mutexes.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 181 ++++++++++++++++++
1 file changed, 181 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 6ceb48fb42e3..80c8bd409d68 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -40,6 +40,39 @@ static int post_sem(int sem, __u32 *count)
return ioctl(sem, NTSYNC_IOC_SEM_POST, count);
}
+static int read_mutex_state(int mutex, __u32 *count, __u32 *owner)
+{
+ struct ntsync_mutex_args args;
+ int ret;
+
+ memset(&args, 0xcc, sizeof(args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &args);
+ *count = args.count;
+ *owner = args.owner;
+ return ret;
+}
+
+#define check_mutex_state(mutex, count, owner) \
+ ({ \
+ __u32 __count, __owner; \
+ int ret = read_mutex_state((mutex), &__count, &__owner); \
+ EXPECT_EQ(0, ret); \
+ EXPECT_EQ((count), __count); \
+ EXPECT_EQ((owner), __owner); \
+ })
+
+static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
+{
+ struct ntsync_mutex_args args;
+ int ret;
+
+ args.owner = owner;
+ args.count = 0xdeadbeef;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_UNLOCK, &args);
+ *count = args.count;
+ return ret;
+}
+
static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
struct ntsync_wait_args args = {0};
@@ -140,4 +173,152 @@ TEST(semaphore_state)
close(fd);
}
+TEST(mutex_state)
+{
+ struct ntsync_mutex_args mutex_args;
+ __u32 owner, count, index;
+ struct timespec timeout;
+ int fd, ret, mutex;
+
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 0;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 2;
+ ret = ioctl(fd, NTSYNC_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, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ mutex = mutex_args.mutex;
+ check_mutex_state(mutex, 2, 123);
+
+ ret = unlock_mutex(mutex, 0, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ ret = unlock_mutex(mutex, 456, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+ check_mutex_state(mutex, 2, 123);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+ check_mutex_state(mutex, 1, 123);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, count);
+ check_mutex_state(mutex, 0, 0);
+
+ ret = unlock_mutex(mutex, 123, &count);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+
+ ret = wait_any(fd, 1, &mutex, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 456);
+
+ ret = wait_any(fd, 1, &mutex, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 2, 456);
+
+ ret = unlock_mutex(mutex, 456, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+ check_mutex_state(mutex, 1, 456);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ owner = 0;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ owner = 123;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
+ check_mutex_state(mutex, 1, 456);
+
+ owner = 456;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ owner = 123;
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ memset(&mutex_args, 0xcc, sizeof(mutex_args));
+ ret = ioctl(mutex, NTSYNC_IOC_MUTEX_READ, &mutex_args);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, mutex_args.count);
+ EXPECT_EQ(0, mutex_args.owner);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ close(mutex);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ mutex = mutex_args.mutex;
+ check_mutex_state(mutex, 0, 0);
+
+ ret = wait_any(fd, 1, &mutex, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_mutex_state(mutex, 1, 123);
+
+ close(mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 19/29] selftests: ntsync: Add some tests for
NTSYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:46 -0600
Message-Id: <20240131021356.10322-20-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test basic synchronous functionality of NTSYNC_IOC_WAIT_ANY, when objects are
considered signaled or not signaled, and how they are affected by a successful
wait.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 105 ++++++++++++++++++
1 file changed, 105 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 80c8bd409d68..13e7c9d7441e 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -321,4 +321,109 @@ TEST(mutex_state)
close(fd);
}
+TEST(test_wait_any)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 owner, index, count;
+ struct timespec timeout;
+ int objs[2], fd, ret;
+
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 2;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_any(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ owner = 123;
+ ret = ioctl(mutex_args.mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ EXPECT_EQ(1, index);
+
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+
+ /* test waiting on the same object twice */
+ count = 2;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ objs[0] = objs[1] = sem_args.sem;
+ ret = wait_any(fd, 2, objs, 456, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, wait_args.index);
+ check_sem_state(sem_args.sem, 1, 3);
+
+ ret = wait_any(fd, 0, NULL, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 20/29] selftests: ntsync: Add some tests for
NTSYNC_IOC_WAIT_ALL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:47 -0600
Message-Id: <20240131021356.10322-21-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test basic synchronous functionality of NTSYNC_IOC_WAIT_ALL, and when objects
are considered simultaneously signaled.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 99 ++++++++++++++++++-
1 file changed, 97 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 13e7c9d7441e..77f1b7e42d76 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -73,7 +73,8 @@ static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
return ret;
}
-static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+static int wait_objs(int fd, unsigned long request, __u32 count,
+ const int *objs, __u32 owner, __u32 *index)
{
struct ntsync_wait_args args = {0};
struct timespec timeout;
@@ -86,11 +87,21 @@ static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *in
args.objs = (uintptr_t)objs;
args.owner = owner;
args.index = 0xdeadbeef;
- ret = ioctl(fd, NTSYNC_IOC_WAIT_ANY, &args);
+ ret = ioctl(fd, request, &args);
*index = args.index;
return ret;
}
+static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);
+}
+
+static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);
+}
+
TEST(semaphore_state)
{
struct ntsync_sem_args sem_args;
@@ -426,4 +437,88 @@ TEST(test_wait_any)
close(fd);
}
+TEST(test_wait_all)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 owner, index, count;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 2;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 0;
+ mutex_args.count = 0;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 456, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_mutex_state(mutex_args.mutex, 2, 123);
+
+ count = 3;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 2, 3);
+ check_mutex_state(mutex_args.mutex, 3, 123);
+
+ owner = 123;
+ ret = ioctl(mutex_args.mutex, NTSYNC_IOC_MUTEX_KILL, &owner);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EOWNERDEAD, errno);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 123);
+
+ /* test waiting on the same object twice */
+ objs[0] = objs[1] = sem_args.sem;
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EINVAL, errno);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

182
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@ -0,0 +1,182 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 21/29] selftests: ntsync: Add some tests for wakeup
signaling with WINESYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:48 -0600
Message-Id: <20240131021356.10322-22-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test contended "wait-for-any" waits, to make sure that scheduling and wakeup
logic works correctly.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 152 ++++++++++++++++++
1 file changed, 152 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 77f1b7e42d76..96a866ef235f 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -521,4 +521,156 @@ TEST(test_wait_all)
close(fd);
}
+struct wake_args
+{
+ int fd;
+ int obj;
+};
+
+struct wait_args
+{
+ int fd;
+ unsigned long request;
+ struct ntsync_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 __u64 get_abs_timeout(unsigned int ms)
+{
+ struct timespec timeout;
+ clock_gettime(CLOCK_MONOTONIC, &timeout);
+ return (timeout.tv_sec * 1000000000) + timeout.tv_nsec + (ms * 1000000);
+}
+
+static int wait_for_thread(pthread_t thread, unsigned int ms)
+{
+ struct timespec timeout;
+
+ clock_gettime(CLOCK_REALTIME, &timeout);
+ timeout.tv_nsec += ms * 1000000;
+ timeout.tv_sec += (timeout.tv_nsec / 1000000000);
+ timeout.tv_nsec %= 1000000000;
+ return pthread_timedjoin_np(thread, NULL, &timeout);
+}
+
+TEST(wake_any)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
+ int objs[2], fd, ret;
+ __u32 count, index;
+ pthread_t thread;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 1;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ /* test waking the semaphore */
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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 = NTSYNC_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);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 0, 3);
+
+ 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 */
+ ret = wait_any(fd, 1, &mutex_args.mutex, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, mutex_args.count);
+ check_mutex_state(mutex_args.mutex, 1, 456);
+
+ 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 */
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ 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
--
2.43.0

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@ -0,0 +1,129 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 22/29] selftests: ntsync: Add some tests for wakeup
signaling with WINESYNC_IOC_WAIT_ALL.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:49 -0600
Message-Id: <20240131021356.10322-23-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test contended "wait-for-all" waits, to make sure that scheduling and wakeup
logic works correctly, and that the wait only exits once objects are all
simultaneously signaled.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 98 +++++++++++++++++++
1 file changed, 98 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 96a866ef235f..7776fe71b8ef 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -673,4 +673,102 @@ TEST(wake_any)
close(fd);
}
+TEST(wake_all)
+{
+ struct ntsync_mutex_args mutex_args = {0};
+ struct ntsync_wait_args wait_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
+ int objs[2], fd, ret;
+ __u32 count, index;
+ pthread_t thread;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ sem_args.max = 3;
+ sem_args.sem = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, sem_args.sem);
+
+ mutex_args.owner = 123;
+ mutex_args.count = 1;
+ mutex_args.mutex = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+
+ objs[0] = sem_args.sem;
+ objs[1] = mutex_args.mutex;
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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 = NTSYNC_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);
+
+ count = 1;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ check_sem_state(sem_args.sem, 1, 3);
+
+ ret = wait_any(fd, 1, &sem_args.sem, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = unlock_mutex(mutex_args.mutex, 123, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, count);
+
+ ret = pthread_tryjoin_np(thread, NULL);
+ EXPECT_EQ(EBUSY, ret);
+
+ check_mutex_state(mutex_args.mutex, 0, 0);
+
+ count = 2;
+ ret = post_sem(sem_args.sem, &count);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 1, 3);
+ check_mutex_state(mutex_args.mutex, 1, 456);
+
+ 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 */
+
+ wait_args.timeout = get_abs_timeout(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);
+
+ close(sem_args.sem);
+ close(mutex_args.mutex);
+
+ 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
--
2.43.0

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@ -0,0 +1,129 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 23/29] selftests: ntsync: Add some tests for
manual-reset event state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:50 -0600
Message-Id: <20240131021356.10322-24-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test event-specific ioctls NTSYNC_IOC_EVENT_SET, NTSYNC_IOC_EVENT_RESET,
NTSYNC_IOC_EVENT_PULSE, NTSYNC_IOC_EVENT_READ for manual-reset events, and
waiting on manual-reset events.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 7776fe71b8ef..98fc70a9a58b 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -73,6 +73,27 @@ static int unlock_mutex(int mutex, __u32 owner, __u32 *count)
return ret;
}
+static int read_event_state(int event, __u32 *signaled, __u32 *manual)
+{
+ struct ntsync_event_args args;
+ int ret;
+
+ memset(&args, 0xcc, sizeof(args));
+ ret = ioctl(event, NTSYNC_IOC_EVENT_READ, &args);
+ *signaled = args.signaled;
+ *manual = args.manual;
+ return ret;
+}
+
+#define check_event_state(event, signaled, manual) \
+ ({ \
+ __u32 __signaled, __manual; \
+ int ret = read_event_state((event), &__signaled, &__manual); \
+ EXPECT_EQ(0, ret); \
+ EXPECT_EQ((signaled), __signaled); \
+ EXPECT_EQ((manual), __manual); \
+ })
+
static int wait_objs(int fd, unsigned long request, __u32 count,
const int *objs, __u32 owner, __u32 *index)
{
@@ -332,6 +353,74 @@ TEST(mutex_state)
close(fd);
}
+TEST(manual_event_state)
+{
+ struct ntsync_event_args event_args;
+ __u32 index, signaled;
+ int fd, event, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ event_args.manual = 1;
+ event_args.signaled = 0;
+ event_args.event = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, event_args.event);
+ event = event_args.event;
+ check_event_state(event, 0, 1);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 1, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 1, 1);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_event_state(event, 1, 1);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 1);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 1);
+
+ close(event);
+
+ close(fd);
+}
+
TEST(test_wait_any)
{
struct ntsync_mutex_args mutex_args = {0};
--
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@ -0,0 +1,92 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 24/29] selftests: ntsync: Add some tests for
auto-reset event state.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:51 -0600
Message-Id: <20240131021356.10322-25-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test event-specific ioctls NTSYNC_IOC_EVENT_SET, NTSYNC_IOC_EVENT_RESET,
NTSYNC_IOC_EVENT_PULSE, NTSYNC_IOC_EVENT_READ for auto-reset events, and
waiting on auto-reset events.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 59 +++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 98fc70a9a58b..f1fb28949367 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -421,6 +421,65 @@ TEST(manual_event_state)
close(fd);
}
+TEST(auto_event_state)
+{
+ struct ntsync_event_args event_args;
+ __u32 index, signaled;
+ int fd, event, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ event_args.manual = 0;
+ event_args.signaled = 1;
+ event_args.event = 0xdeadbeef;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+ EXPECT_NE(0xdeadbeef, event_args.event);
+ event = event_args.event;
+
+ check_event_state(event, 1, 0);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 1, 0);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_event_state(event, 0, 0);
+
+ signaled = 0xdeadbeef;
+ ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 0);
+
+ ret = wait_any(fd, 1, &event, 123, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+ check_event_state(event, 0, 0);
+
+ ret = ioctl(event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event, 0, 0);
+
+ close(event);
+
+ close(fd);
+}
+
TEST(test_wait_any)
{
struct ntsync_mutex_args mutex_args = {0};
--
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@ -0,0 +1,270 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 25/29] selftests: ntsync: Add some tests for wakeup
signaling with events.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:52 -0600
Message-Id: <20240131021356.10322-26-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Expand the contended wait tests, which previously only covered events and
semaphores, to cover events as well.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 151 +++++++++++++++++-
1 file changed, 147 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index f1fb28949367..598333df3e6d 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -587,6 +587,7 @@ TEST(test_wait_any)
TEST(test_wait_all)
{
+ struct ntsync_event_args event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_sem_args sem_args = {0};
__u32 owner, index, count;
@@ -609,6 +610,11 @@ TEST(test_wait_all)
EXPECT_EQ(0, ret);
EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
objs[0] = sem_args.sem;
objs[1] = mutex_args.mutex;
@@ -657,6 +663,14 @@ TEST(test_wait_all)
check_sem_state(sem_args.sem, 1, 3);
check_mutex_state(mutex_args.mutex, 1, 123);
+ objs[0] = sem_args.sem;
+ objs[1] = event_args.event;
+ ret = wait_all(fd, 2, objs, 123, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+ check_sem_state(sem_args.sem, 0, 3);
+ check_event_state(event_args.event, 1, 1);
+
/* test waiting on the same object twice */
objs[0] = objs[1] = sem_args.sem;
ret = wait_all(fd, 2, objs, 123, &index);
@@ -665,6 +679,7 @@ TEST(test_wait_all)
close(sem_args.sem);
close(mutex_args.mutex);
+ close(event_args.event);
close(fd);
}
@@ -713,12 +728,13 @@ static int wait_for_thread(pthread_t thread, unsigned int ms)
TEST(wake_any)
{
+ struct ntsync_event_args event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
struct wait_args thread_args;
+ __u32 count, index, signaled;
int objs[2], fd, ret;
- __u32 count, index;
pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
@@ -800,10 +816,101 @@ TEST(wake_any)
EXPECT_EQ(0, thread_args.ret);
EXPECT_EQ(1, wait_args.index);
+ /* test waking events */
+
+ event_args.manual = false;
+ event_args.signaled = false;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ objs[1] = event_args.event;
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 0);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 0);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ close(event_args.event);
+
+ event_args.manual = true;
+ event_args.signaled = false;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ objs[1] = event_args.event;
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 1, 1);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ 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(event_args.event, NTSYNC_IOC_EVENT_PULSE, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+ check_event_state(event_args.event, 0, 1);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(1, wait_args.index);
+
+ close(event_args.event);
+
/* delete an object while it's being waited on */
wait_args.timeout = get_abs_timeout(200);
wait_args.owner = 123;
+ objs[1] = mutex_args.mutex;
ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
EXPECT_EQ(0, ret);
@@ -823,12 +930,14 @@ TEST(wake_any)
TEST(wake_all)
{
+ struct ntsync_event_args manual_event_args = {0};
+ struct ntsync_event_args auto_event_args = {0};
struct ntsync_mutex_args mutex_args = {0};
struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
struct wait_args thread_args;
- int objs[2], fd, ret;
- __u32 count, index;
+ __u32 count, index, signaled;
+ int objs[4], fd, ret;
pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
@@ -848,12 +957,24 @@ TEST(wake_all)
EXPECT_EQ(0, ret);
EXPECT_NE(0xdeadbeef, mutex_args.mutex);
+ manual_event_args.manual = true;
+ manual_event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &manual_event_args);
+ EXPECT_EQ(0, ret);
+
+ auto_event_args.manual = false;
+ auto_event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &auto_event_args);
+ EXPECT_EQ(0, ret);
+
objs[0] = sem_args.sem;
objs[1] = mutex_args.mutex;
+ objs[2] = manual_event_args.event;
+ objs[3] = auto_event_args.event;
wait_args.timeout = get_abs_timeout(1000);
wait_args.objs = (uintptr_t)objs;
- wait_args.count = 2;
+ wait_args.count = 4;
wait_args.owner = 456;
thread_args.fd = fd;
thread_args.args = &wait_args;
@@ -887,12 +1008,32 @@ TEST(wake_all)
check_mutex_state(mutex_args.mutex, 0, 0);
+ ret = ioctl(manual_event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
count = 2;
ret = post_sem(sem_args.sem, &count);
EXPECT_EQ(0, ret);
EXPECT_EQ(0, count);
+ check_sem_state(sem_args.sem, 2, 3);
+
+ ret = ioctl(auto_event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, signaled);
+
+ ret = ioctl(manual_event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
+ ret = ioctl(auto_event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, signaled);
+
check_sem_state(sem_args.sem, 1, 3);
check_mutex_state(mutex_args.mutex, 1, 456);
+ check_event_state(manual_event_args.event, 1, 1);
+ check_event_state(auto_event_args.event, 0, 0);
ret = wait_for_thread(thread, 100);
EXPECT_EQ(0, ret);
@@ -910,6 +1051,8 @@ TEST(wake_all)
close(sem_args.sem);
close(mutex_args.mutex);
+ close(manual_event_args.event);
+ close(auto_event_args.event);
ret = wait_for_thread(thread, 200);
EXPECT_EQ(0, ret);
--
2.43.0

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@ -0,0 +1,234 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 26/29] selftests: ntsync: Add tests for alertable
waits.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:53 -0600
Message-Id: <20240131021356.10322-27-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Test the "alert" functionality of NTSYNC_IOC_WAIT_ALL and NTSYNC_IOC_WAIT_ANY,
when a wait is woken with an alert and when it is woken by an object.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 179 +++++++++++++++++-
1 file changed, 176 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 598333df3e6d..6c00a55909aa 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -95,7 +95,7 @@ static int read_event_state(int event, __u32 *signaled, __u32 *manual)
})
static int wait_objs(int fd, unsigned long request, __u32 count,
- const int *objs, __u32 owner, __u32 *index)
+ const int *objs, __u32 owner, int alert, __u32 *index)
{
struct ntsync_wait_args args = {0};
struct timespec timeout;
@@ -108,6 +108,7 @@ static int wait_objs(int fd, unsigned long request, __u32 count,
args.objs = (uintptr_t)objs;
args.owner = owner;
args.index = 0xdeadbeef;
+ args.alert = alert;
ret = ioctl(fd, request, &args);
*index = args.index;
return ret;
@@ -115,12 +116,26 @@ static int wait_objs(int fd, unsigned long request, __u32 count,
static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
- return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, 0, index);
}
static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)
{
- return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, 0, index);
+}
+
+static int wait_any_alert(int fd, __u32 count, const int *objs,
+ __u32 owner, int alert, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ANY,
+ count, objs, owner, alert, index);
+}
+
+static int wait_all_alert(int fd, __u32 count, const int *objs,
+ __u32 owner, int alert, __u32 *index)
+{
+ return wait_objs(fd, NTSYNC_IOC_WAIT_ALL,
+ count, objs, owner, alert, index);
}
TEST(semaphore_state)
@@ -1062,4 +1077,162 @@ TEST(wake_all)
close(fd);
}
+TEST(alert_any)
+{
+ struct ntsync_event_args event_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 index, count, signaled;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ sem_args.count = 0;
+ 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);
+ objs[0] = sem_args.sem;
+
+ sem_args.count = 1;
+ 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);
+ objs[1] = sem_args.sem;
+
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 0, NULL, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 0, NULL, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(1, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ close(event_args.event);
+
+ /* test with an auto-reset event */
+
+ event_args.manual = false;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ count = 1;
+ ret = post_sem(objs[0], &count);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ ret = wait_any_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(event_args.event);
+
+ close(objs[0]);
+ close(objs[1]);
+
+ close(fd);
+}
+
+TEST(alert_all)
+{
+ struct ntsync_event_args event_args = {0};
+ struct ntsync_sem_args sem_args = {0};
+ __u32 index, count, signaled;
+ int objs[2], fd, ret;
+
+ fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
+ ASSERT_LE(0, fd);
+
+ 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);
+ objs[0] = sem_args.sem;
+
+ sem_args.count = 1;
+ 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);
+ objs[1] = sem_args.sem;
+
+ event_args.manual = true;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ close(event_args.event);
+
+ /* test with an auto-reset event */
+
+ event_args.manual = false;
+ event_args.signaled = true;
+ ret = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);
+ EXPECT_EQ(0, ret);
+
+ count = 2;
+ ret = post_sem(objs[1], &count);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(2, index);
+
+ ret = wait_all_alert(fd, 2, objs, 123, event_args.event, &index);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(ETIMEDOUT, errno);
+
+ close(event_args.event);
+
+ close(objs[0]);
+ close(objs[1]);
+
+ close(fd);
+}
+
TEST_HARNESS_MAIN
--
2.43.0

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@ -0,0 +1,121 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 27/29] selftests: ntsync: Add some tests for wakeup
signaling via alerts.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:54 -0600
Message-Id: <20240131021356.10322-28-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Expand the alert tests to cover alerting a thread mid-wait, to test that the
relevant scheduling logic works correctly.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
.../testing/selftests/drivers/ntsync/ntsync.c | 62 +++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 6c00a55909aa..09153d0686ac 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -1080,9 +1080,12 @@ TEST(wake_all)
TEST(alert_any)
{
struct ntsync_event_args event_args = {0};
+ struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
__u32 index, count, signaled;
+ struct wait_args thread_args;
int objs[2], fd, ret;
+ pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
ASSERT_LE(0, fd);
@@ -1130,6 +1133,34 @@ TEST(alert_any)
EXPECT_EQ(0, ret);
EXPECT_EQ(2, index);
+ /* test wakeup via alert */
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ wait_args.objs = (uintptr_t)objs;
+ wait_args.count = 2;
+ wait_args.owner = 123;
+ wait_args.index = 0xdeadbeef;
+ wait_args.alert = event_args.event;
+ thread_args.fd = fd;
+ thread_args.args = &wait_args;
+ thread_args.request = NTSYNC_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);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(2, wait_args.index);
+
close(event_args.event);
/* test with an auto-reset event */
@@ -1166,9 +1197,12 @@ TEST(alert_any)
TEST(alert_all)
{
struct ntsync_event_args event_args = {0};
+ struct ntsync_wait_args wait_args = {0};
struct ntsync_sem_args sem_args = {0};
+ struct wait_args thread_args;
__u32 index, count, signaled;
int objs[2], fd, ret;
+ pthread_t thread;
fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
ASSERT_LE(0, fd);
@@ -1202,6 +1236,34 @@ TEST(alert_all)
EXPECT_EQ(0, ret);
EXPECT_EQ(2, index);
+ /* test wakeup via alert */
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ wait_args.timeout = get_abs_timeout(1000);
+ wait_args.objs = (uintptr_t)objs;
+ wait_args.count = 2;
+ wait_args.owner = 123;
+ wait_args.index = 0xdeadbeef;
+ wait_args.alert = event_args.event;
+ thread_args.fd = fd;
+ thread_args.args = &wait_args;
+ thread_args.request = NTSYNC_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);
+
+ ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+ EXPECT_EQ(0, ret);
+
+ ret = wait_for_thread(thread, 100);
+ EXPECT_EQ(0, ret);
+ EXPECT_EQ(0, thread_args.ret);
+ EXPECT_EQ(2, wait_args.index);
+
close(event_args.event);
/* test with an auto-reset event */
--
2.43.0

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@ -0,0 +1,39 @@
From git@z Thu Jan 1 00:00:00 1970
Subject: [PATCH RFC v2 28/29] maintainers: Add an entry for ntsync.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: Tue, 30 Jan 2024 20:13:55 -0600
Message-Id: <20240131021356.10322-29-zfigura@codeweavers.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Add myself as maintainer, supported by CodeWeavers.
Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
MAINTAINERS | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 8d1052fa6a69..7924127d351b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15585,6 +15585,15 @@ T: git https://github.com/Paragon-Software-Group/linux-ntfs3.git
F: Documentation/filesystems/ntfs3.rst
F: fs/ntfs3/
+NTSYNC SYNCHRONIZATION PRIMITIVE DRIVER
+M: Elizabeth Figura <zfigura@codeweavers.com>
+L: wine-devel@winehq.org
+S: Supported
+F: Documentation/userspace-api/ntsync.rst
+F: drivers/misc/ntsync.c
+F: include/uapi/linux/ntsync.h
+F: tools/testing/selftests/drivers/ntsync/
+
NUBUS SUBSYSTEM
M: Finn Thain <fthain@linux-m68k.org>
L: linux-m68k@lists.linux-m68k.org
--
2.43.0