#include <linux/major.h>
#include <linux/smp_lock.h>
#include <linux/device.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/compat.h>
struct evdev {
char name[16];
struct input_handle handle;
wait_queue_head_t wait;
- struct evdev_list *grab;
- struct list_head list;
+ struct evdev_client *grab;
+ struct list_head client_list;
};
-struct evdev_list {
+struct evdev_client {
struct input_event buffer[EVDEV_BUFFER_SIZE];
int head;
int tail;
static void evdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
{
struct evdev *evdev = handle->private;
- struct evdev_list *list;
+ struct evdev_client *client;
if (evdev->grab) {
- list = evdev->grab;
+ client = evdev->grab;
- do_gettimeofday(&list->buffer[list->head].time);
- list->buffer[list->head].type = type;
- list->buffer[list->head].code = code;
- list->buffer[list->head].value = value;
- list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1);
+ do_gettimeofday(&client->buffer[client->head].time);
+ client->buffer[client->head].type = type;
+ client->buffer[client->head].code = code;
+ client->buffer[client->head].value = value;
+ client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1);
- kill_fasync(&list->fasync, SIGIO, POLL_IN);
+ kill_fasync(&client->fasync, SIGIO, POLL_IN);
} else
- list_for_each_entry(list, &evdev->list, node) {
+ list_for_each_entry(client, &evdev->client_list, node) {
- do_gettimeofday(&list->buffer[list->head].time);
- list->buffer[list->head].type = type;
- list->buffer[list->head].code = code;
- list->buffer[list->head].value = value;
- list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1);
+ do_gettimeofday(&client->buffer[client->head].time);
+ client->buffer[client->head].type = type;
+ client->buffer[client->head].code = code;
+ client->buffer[client->head].value = value;
+ client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1);
- kill_fasync(&list->fasync, SIGIO, POLL_IN);
+ kill_fasync(&client->fasync, SIGIO, POLL_IN);
}
wake_up_interruptible(&evdev->wait);
static int evdev_fasync(int fd, struct file *file, int on)
{
+ struct evdev_client *client = file->private_data;
int retval;
- struct evdev_list *list = file->private_data;
- retval = fasync_helper(fd, file, on, &list->fasync);
+
+ retval = fasync_helper(fd, file, on, &client->fasync);
+
return retval < 0 ? retval : 0;
}
-static int evdev_flush(struct file * file)
+static int evdev_flush(struct file *file, fl_owner_t id)
{
- struct evdev_list *list = file->private_data;
- if (!list->evdev->exist) return -ENODEV;
- return input_flush_device(&list->evdev->handle, file);
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
+
+ if (!evdev->exist)
+ return -ENODEV;
+
+ return input_flush_device(&evdev->handle, file);
}
static void evdev_free(struct evdev *evdev)
kfree(evdev);
}
-static int evdev_release(struct inode * inode, struct file * file)
+static int evdev_release(struct inode *inode, struct file *file)
{
- struct evdev_list *list = file->private_data;
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
- if (list->evdev->grab == list) {
- input_release_device(&list->evdev->handle);
- list->evdev->grab = NULL;
+ if (evdev->grab == client) {
+ input_release_device(&evdev->handle);
+ evdev->grab = NULL;
}
evdev_fasync(-1, file, 0);
- list_del(&list->node);
+ list_del(&client->node);
+ kfree(client);
- if (!--list->evdev->open) {
- if (list->evdev->exist)
- input_close_device(&list->evdev->handle);
+ if (!--evdev->open) {
+ if (evdev->exist)
+ input_close_device(&evdev->handle);
else
- evdev_free(list->evdev);
+ evdev_free(evdev);
}
- kfree(list);
return 0;
}
-static int evdev_open(struct inode * inode, struct file * file)
+static int evdev_open(struct inode *inode, struct file *file)
{
- struct evdev_list *list;
+ struct evdev_client *client;
+ struct evdev *evdev;
int i = iminor(inode) - EVDEV_MINOR_BASE;
- int accept_err;
+ int error;
- if (i >= EVDEV_MINORS || !evdev_table[i] || !evdev_table[i]->exist)
+ if (i >= EVDEV_MINORS)
return -ENODEV;
- if ((accept_err = input_accept_process(&(evdev_table[i]->handle), file)))
- return accept_err;
+ evdev = evdev_table[i];
+
+ if (!evdev || !evdev->exist)
+ return -ENODEV;
- if (!(list = kmalloc(sizeof(struct evdev_list), GFP_KERNEL)))
+ client = kzalloc(sizeof(struct evdev_client), GFP_KERNEL);
+ if (!client)
return -ENOMEM;
- memset(list, 0, sizeof(struct evdev_list));
- list->evdev = evdev_table[i];
- list_add_tail(&list->node, &evdev_table[i]->list);
- file->private_data = list;
+ client->evdev = evdev;
+ list_add_tail(&client->node, &evdev->client_list);
- if (!list->evdev->open++)
- if (list->evdev->exist)
- input_open_device(&list->evdev->handle);
+ if (!evdev->open++ && evdev->exist) {
+ error = input_open_device(&evdev->handle);
+ if (error) {
+ list_del(&client->node);
+ kfree(client);
+ return error;
+ }
+ }
+ file->private_data = client;
return 0;
}
#ifdef CONFIG_COMPAT
+
struct input_event_compat {
struct compat_timeval time;
__u16 type;
__s32 value;
};
+/* Note to the author of this code: did it ever occur to
+ you why the ifdefs are needed? Think about it again. -AK */
#ifdef CONFIG_X86_64
-# define COMPAT_TEST test_thread_flag(TIF_IA32)
+# define COMPAT_TEST is_compat_task()
#elif defined(CONFIG_IA64)
-# define COMPAT_TEST IS_IA32_PROCESS(ia64_task_regs(current))
-#elif defined(CONFIG_ARCH_S390)
+# define COMPAT_TEST IS_IA32_PROCESS(task_pt_regs(current))
+#elif defined(CONFIG_S390)
# define COMPAT_TEST test_thread_flag(TIF_31BIT)
#elif defined(CONFIG_MIPS)
# define COMPAT_TEST (current->thread.mflags & MF_32BIT_ADDR)
# define COMPAT_TEST test_thread_flag(TIF_32BIT)
#endif
-static ssize_t evdev_write_compat(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
+static inline size_t evdev_event_size(void)
{
- struct evdev_list *list = file->private_data;
- struct input_event_compat event;
- int retval = 0;
+ return COMPAT_TEST ?
+ sizeof(struct input_event_compat) : sizeof(struct input_event);
+}
- while (retval < count) {
- if (copy_from_user(&event, buffer + retval, sizeof(struct input_event_compat)))
+static int evdev_event_from_user(const char __user *buffer, struct input_event *event)
+{
+ if (COMPAT_TEST) {
+ struct input_event_compat compat_event;
+
+ if (copy_from_user(&compat_event, buffer, sizeof(struct input_event_compat)))
+ return -EFAULT;
+
+ event->time.tv_sec = compat_event.time.tv_sec;
+ event->time.tv_usec = compat_event.time.tv_usec;
+ event->type = compat_event.type;
+ event->code = compat_event.code;
+ event->value = compat_event.value;
+
+ } else {
+ if (copy_from_user(event, buffer, sizeof(struct input_event)))
return -EFAULT;
- input_event(list->evdev->handle.dev, event.type, event.code, event.value);
- retval += sizeof(struct input_event_compat);
}
- return retval;
+ return 0;
}
-#endif
-static ssize_t evdev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
+static int evdev_event_to_user(char __user *buffer, const struct input_event *event)
+{
+ if (COMPAT_TEST) {
+ struct input_event_compat compat_event;
+
+ compat_event.time.tv_sec = event->time.tv_sec;
+ compat_event.time.tv_usec = event->time.tv_usec;
+ compat_event.type = event->type;
+ compat_event.code = event->code;
+ compat_event.value = event->value;
+
+ if (copy_to_user(buffer, &compat_event, sizeof(struct input_event_compat)))
+ return -EFAULT;
+
+ } else {
+ if (copy_to_user(buffer, event, sizeof(struct input_event)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+#else
+
+static inline size_t evdev_event_size(void)
+{
+ return sizeof(struct input_event);
+}
+
+static int evdev_event_from_user(const char __user *buffer, struct input_event *event)
+{
+ if (copy_from_user(event, buffer, sizeof(struct input_event)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int evdev_event_to_user(char __user *buffer, const struct input_event *event)
+{
+ if (copy_to_user(buffer, event, sizeof(struct input_event)))
+ return -EFAULT;
+
+ return 0;
+}
+
+#endif /* CONFIG_COMPAT */
+
+static ssize_t evdev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
- struct evdev_list *list = file->private_data;
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
struct input_event event;
int retval = 0;
- if (!list->evdev->exist) return -ENODEV;
-
-#ifdef CONFIG_COMPAT
- if (COMPAT_TEST)
- return evdev_write_compat(file, buffer, count, ppos);
-#endif
+ if (!evdev->exist)
+ return -ENODEV;
while (retval < count) {
- if (copy_from_user(&event, buffer + retval, sizeof(struct input_event)))
+ if (evdev_event_from_user(buffer + retval, &event))
return -EFAULT;
- input_event(list->evdev->handle.dev, event.type, event.code, event.value);
- retval += sizeof(struct input_event);
+ input_inject_event(&evdev->handle, event.type, event.code, event.value);
+ retval += evdev_event_size();
}
return retval;
}
-#ifdef CONFIG_COMPAT
-static ssize_t evdev_read_compat(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
+static ssize_t evdev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
- struct evdev_list *list = file->private_data;
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
int retval;
- if (count < sizeof(struct input_event_compat))
+ if (count < evdev_event_size())
return -EINVAL;
- if (list->head == list->tail && list->evdev->exist && (file->f_flags & O_NONBLOCK))
+ if (client->head == client->tail && evdev->exist && (file->f_flags & O_NONBLOCK))
return -EAGAIN;
- retval = wait_event_interruptible(list->evdev->wait,
- list->head != list->tail || (!list->evdev->exist));
-
+ retval = wait_event_interruptible(evdev->wait,
+ client->head != client->tail || !evdev->exist);
if (retval)
return retval;
- if (!list->evdev->exist)
+ if (!evdev->exist)
return -ENODEV;
- while (list->head != list->tail && retval + sizeof(struct input_event_compat) <= count) {
- struct input_event *event = (struct input_event *) list->buffer + list->tail;
- struct input_event_compat event_compat;
- event_compat.time.tv_sec = event->time.tv_sec;
- event_compat.time.tv_usec = event->time.tv_usec;
- event_compat.type = event->type;
- event_compat.code = event->code;
- event_compat.value = event->value;
-
- if (copy_to_user(buffer + retval, &event_compat,
- sizeof(struct input_event_compat))) return -EFAULT;
- list->tail = (list->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
- retval += sizeof(struct input_event_compat);
+ while (client->head != client->tail && retval + evdev_event_size() <= count) {
+
+ struct input_event *event = (struct input_event *) client->buffer + client->tail;
+
+ if (evdev_event_to_user(buffer + retval, event))
+ return -EFAULT;
+
+ client->tail = (client->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
+ retval += evdev_event_size();
}
return retval;
}
-#endif
-static ssize_t evdev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
+/* No kernel lock - fine */
+static unsigned int evdev_poll(struct file *file, poll_table *wait)
{
- struct evdev_list *list = file->private_data;
- int retval;
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
+
+ poll_wait(file, &evdev->wait, wait);
+ return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) |
+ (evdev->exist ? 0 : (POLLHUP | POLLERR));
+}
#ifdef CONFIG_COMPAT
- if (COMPAT_TEST)
- return evdev_read_compat(file, buffer, count, ppos);
-#endif
- if (count < sizeof(struct input_event))
- return -EINVAL;
+#define BITS_PER_LONG_COMPAT (sizeof(compat_long_t) * 8)
+#define NBITS_COMPAT(x) ((((x) - 1) / BITS_PER_LONG_COMPAT) + 1)
- if (list->head == list->tail && list->evdev->exist && (file->f_flags & O_NONBLOCK))
- return -EAGAIN;
+#ifdef __BIG_ENDIAN
+static int bits_to_user(unsigned long *bits, unsigned int maxbit,
+ unsigned int maxlen, void __user *p, int compat)
+{
+ int len, i;
+
+ if (compat) {
+ len = NBITS_COMPAT(maxbit) * sizeof(compat_long_t);
+ if (len < maxlen)
+ len = maxlen;
+
+ for (i = 0; i < len / sizeof(compat_long_t); i++)
+ if (copy_to_user((compat_long_t __user *) p + i,
+ (compat_long_t *) bits +
+ i + 1 - ((i % 2) << 1),
+ sizeof(compat_long_t)))
+ return -EFAULT;
+ } else {
+ len = NBITS(maxbit) * sizeof(long);
+ if (len > maxlen)
+ len = maxlen;
- retval = wait_event_interruptible(list->evdev->wait,
- list->head != list->tail || (!list->evdev->exist));
+ if (copy_to_user(p, bits, len))
+ return -EFAULT;
+ }
- if (retval)
- return retval;
+ return len;
+}
+#else
+static int bits_to_user(unsigned long *bits, unsigned int maxbit,
+ unsigned int maxlen, void __user *p, int compat)
+{
+ int len = compat ?
+ NBITS_COMPAT(maxbit) * sizeof(compat_long_t) :
+ NBITS(maxbit) * sizeof(long);
- if (!list->evdev->exist)
- return -ENODEV;
+ if (len > maxlen)
+ len = maxlen;
- while (list->head != list->tail && retval + sizeof(struct input_event) <= count) {
- if (copy_to_user(buffer + retval, list->buffer + list->tail,
- sizeof(struct input_event))) return -EFAULT;
- list->tail = (list->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
- retval += sizeof(struct input_event);
- }
+ return copy_to_user(p, bits, len) ? -EFAULT : len;
+}
+#endif /* __BIG_ENDIAN */
- return retval;
+#else
+
+static int bits_to_user(unsigned long *bits, unsigned int maxbit,
+ unsigned int maxlen, void __user *p, int compat)
+{
+ int len = NBITS(maxbit) * sizeof(long);
+
+ if (len > maxlen)
+ len = maxlen;
+
+ return copy_to_user(p, bits, len) ? -EFAULT : len;
}
-/* No kernel lock - fine */
-static unsigned int evdev_poll(struct file *file, poll_table *wait)
+#endif /* CONFIG_COMPAT */
+
+static int str_to_user(const char *str, unsigned int maxlen, void __user *p)
{
- struct evdev_list *list = file->private_data;
- poll_wait(file, &list->evdev->wait, wait);
- return ((list->head == list->tail) ? 0 : (POLLIN | POLLRDNORM)) |
- (list->evdev->exist ? 0 : (POLLHUP | POLLERR));
+ int len;
+
+ if (!str)
+ return -ENOENT;
+
+ len = strlen(str) + 1;
+ if (len > maxlen)
+ len = maxlen;
+
+ return copy_to_user(p, str, len) ? -EFAULT : len;
}
-static long evdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
+ void __user *p, int compat_mode)
{
- struct evdev_list *list = file->private_data;
- struct evdev *evdev = list->evdev;
+ struct evdev_client *client = file->private_data;
+ struct evdev *evdev = client->evdev;
struct input_dev *dev = evdev->handle.dev;
struct input_absinfo abs;
- void __user *p = (void __user *)arg;
- int __user *ip = (int __user *)arg;
+ struct ff_effect effect;
+ int __user *ip = (int __user *)p;
int i, t, u, v;
+ int error;
- if (!evdev->exist) return -ENODEV;
+ if (!evdev->exist)
+ return -ENODEV;
switch (cmd) {
return put_user(EV_VERSION, ip);
case EVIOCGID:
- return copy_to_user(p, &dev->id, sizeof(struct input_id)) ? -EFAULT : 0;
+ if (copy_to_user(p, &dev->id, sizeof(struct input_id)))
+ return -EFAULT;
+ return 0;
+
+ case EVIOCGREP:
+ if (!test_bit(EV_REP, dev->evbit))
+ return -ENOSYS;
+ if (put_user(dev->rep[REP_DELAY], ip))
+ return -EFAULT;
+ if (put_user(dev->rep[REP_PERIOD], ip + 1))
+ return -EFAULT;
+ return 0;
+
+ case EVIOCSREP:
+ if (!test_bit(EV_REP, dev->evbit))
+ return -ENOSYS;
+ if (get_user(u, ip))
+ return -EFAULT;
+ if (get_user(v, ip + 1))
+ return -EFAULT;
+
+ input_inject_event(&evdev->handle, EV_REP, REP_DELAY, u);
+ input_inject_event(&evdev->handle, EV_REP, REP_PERIOD, v);
+
+ return 0;
case EVIOCGKEYCODE:
- if (get_user(t, ip)) return -EFAULT;
- if (t < 0 || t >= dev->keycodemax || !dev->keycodesize) return -EINVAL;
- if (put_user(INPUT_KEYCODE(dev, t), ip + 1)) return -EFAULT;
+ if (get_user(t, ip))
+ return -EFAULT;
+
+ error = dev->getkeycode(dev, t, &v);
+ if (error)
+ return error;
+
+ if (put_user(v, ip + 1))
+ return -EFAULT;
+
return 0;
case EVIOCSKEYCODE:
- if (get_user(t, ip)) return -EFAULT;
- if (t < 0 || t >= dev->keycodemax || !dev->keycodesize) return -EINVAL;
- if (get_user(v, ip + 1)) return -EFAULT;
- if (v < 0 || v > KEY_MAX) return -EINVAL;
- if (v >> (dev->keycodesize * 8)) return -EINVAL;
- u = SET_INPUT_KEYCODE(dev, t, v);
- clear_bit(u, dev->keybit);
- set_bit(v, dev->keybit);
- for (i = 0; i < dev->keycodemax; i++)
- if (INPUT_KEYCODE(dev,i) == u)
- set_bit(u, dev->keybit);
- return 0;
+ if (get_user(t, ip) || get_user(v, ip + 1))
+ return -EFAULT;
+
+ return dev->setkeycode(dev, t, v);
case EVIOCSFF:
- if (dev->upload_effect) {
- struct ff_effect effect;
- int err;
-
- if (copy_from_user(&effect, p, sizeof(effect)))
- return -EFAULT;
- err = dev->upload_effect(dev, &effect);
- if (put_user(effect.id, &(((struct ff_effect __user *)arg)->id)))
- return -EFAULT;
- return err;
- }
- else return -ENOSYS;
+ if (copy_from_user(&effect, p, sizeof(effect)))
+ return -EFAULT;
+
+ error = input_ff_upload(dev, &effect, file);
+
+ if (put_user(effect.id, &(((struct ff_effect __user *)p)->id)))
+ return -EFAULT;
+
+ return error;
case EVIOCRMFF:
- if (dev->erase_effect) {
- return dev->erase_effect(dev, (int)arg);
- }
- else return -ENOSYS;
+ return input_ff_erase(dev, (int)(unsigned long) p, file);
case EVIOCGEFFECTS:
- if (put_user(dev->ff_effects_max, ip))
+ i = test_bit(EV_FF, dev->evbit) ? dev->ff->max_effects : 0;
+ if (put_user(i, ip))
return -EFAULT;
return 0;
case EVIOCGRAB:
- if (arg) {
+ if (p) {
if (evdev->grab)
return -EBUSY;
if (input_grab_device(&evdev->handle))
return -EBUSY;
- evdev->grab = list;
+ evdev->grab = client;
return 0;
} else {
- if (evdev->grab != list)
+ if (evdev->grab != client)
return -EINVAL;
input_release_device(&evdev->handle);
evdev->grab = NULL;
if ((_IOC_NR(cmd) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0,0))) {
- long *bits;
+ unsigned long *bits;
int len;
switch (_IOC_NR(cmd) & EV_MAX) {
case EV_LED: bits = dev->ledbit; len = LED_MAX; break;
case EV_SND: bits = dev->sndbit; len = SND_MAX; break;
case EV_FF: bits = dev->ffbit; len = FF_MAX; break;
+ case EV_SW: bits = dev->swbit; len = SW_MAX; break;
default: return -EINVAL;
}
- len = NBITS(len) * sizeof(long);
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, bits, len) ? -EFAULT : len;
+ return bits_to_user(bits, len, _IOC_SIZE(cmd), p, compat_mode);
}
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGKEY(0))) {
- int len;
- len = NBITS(KEY_MAX) * sizeof(long);
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->key, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGKEY(0)))
+ return bits_to_user(dev->key, KEY_MAX, _IOC_SIZE(cmd),
+ p, compat_mode);
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGLED(0))) {
- int len;
- len = NBITS(LED_MAX) * sizeof(long);
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->led, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGLED(0)))
+ return bits_to_user(dev->led, LED_MAX, _IOC_SIZE(cmd),
+ p, compat_mode);
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGSND(0))) {
- int len;
- len = NBITS(SND_MAX) * sizeof(long);
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->snd, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGSND(0)))
+ return bits_to_user(dev->snd, SND_MAX, _IOC_SIZE(cmd),
+ p, compat_mode);
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGNAME(0))) {
- int len;
- if (!dev->name) return -ENOENT;
- len = strlen(dev->name) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->name, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGSW(0)))
+ return bits_to_user(dev->sw, SW_MAX, _IOC_SIZE(cmd),
+ p, compat_mode);
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGPHYS(0))) {
- int len;
- if (!dev->phys) return -ENOENT;
- len = strlen(dev->phys) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->phys, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGNAME(0)))
+ return str_to_user(dev->name, _IOC_SIZE(cmd), p);
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGUNIQ(0))) {
- int len;
- if (!dev->uniq) return -ENOENT;
- len = strlen(dev->uniq) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->uniq, len) ? -EFAULT : len;
- }
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGPHYS(0)))
+ return str_to_user(dev->phys, _IOC_SIZE(cmd), p);
+
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOCGUNIQ(0)))
+ return str_to_user(dev->uniq, _IOC_SIZE(cmd), p);
if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) {
- int t = _IOC_NR(cmd) & ABS_MAX;
+ t = _IOC_NR(cmd) & ABS_MAX;
abs.value = dev->abs[t];
abs.minimum = dev->absmin[t];
if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) {
- int t = _IOC_NR(cmd) & ABS_MAX;
+ t = _IOC_NR(cmd) & ABS_MAX;
if (copy_from_user(&abs, p, sizeof(struct input_absinfo)))
return -EFAULT;
return -EINVAL;
}
-#ifdef CONFIG_COMPAT
-
-#define BITS_PER_LONG_COMPAT (sizeof(compat_long_t) * 8)
-#define NBITS_COMPAT(x) ((((x)-1)/BITS_PER_LONG_COMPAT)+1)
-#define OFF_COMPAT(x) ((x)%BITS_PER_LONG_COMPAT)
-#define BIT_COMPAT(x) (1UL<<OFF_COMPAT(x))
-#define LONG_COMPAT(x) ((x)/BITS_PER_LONG_COMPAT)
-#define test_bit_compat(bit, array) ((array[LONG_COMPAT(bit)] >> OFF_COMPAT(bit)) & 1)
-
-#ifdef __BIG_ENDIAN
-#define bit_to_user(bit, max) \
-do { \
- int i; \
- int len = NBITS_COMPAT((max)) * sizeof(compat_long_t); \
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); \
- for (i = 0; i < len / sizeof(compat_long_t); i++) \
- if (copy_to_user((compat_long_t*) p + i, \
- (compat_long_t*) (bit) + i + 1 - ((i % 2) << 1), \
- sizeof(compat_long_t))) \
- return -EFAULT; \
- return len; \
-} while (0)
-#else
-#define bit_to_user(bit, max) \
-do { \
- int len = NBITS_COMPAT((max)) * sizeof(compat_long_t); \
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); \
- return copy_to_user(p, (bit), len) ? -EFAULT : len; \
-} while (0)
-#endif
+static long evdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ return evdev_ioctl_handler(file, cmd, (void __user *)arg, 0);
+}
+#ifdef CONFIG_COMPAT
static long evdev_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct evdev_list *list = file->private_data;
- struct evdev *evdev = list->evdev;
- struct input_dev *dev = evdev->handle.dev;
- struct input_absinfo abs;
- void __user *p = compat_ptr(arg);
-
- if (!evdev->exist) return -ENODEV;
-
- switch (cmd) {
-
- case EVIOCGVERSION:
- case EVIOCGID:
- case EVIOCGKEYCODE:
- case EVIOCSKEYCODE:
- case EVIOCSFF:
- case EVIOCRMFF:
- case EVIOCGEFFECTS:
- case EVIOCGRAB:
- return evdev_ioctl(file, cmd, (unsigned long) p);
-
- default:
-
- if (_IOC_TYPE(cmd) != 'E')
- return -EINVAL;
-
- if (_IOC_DIR(cmd) == _IOC_READ) {
-
- if ((_IOC_NR(cmd) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0,0))) {
- long *bits;
- int max;
-
- switch (_IOC_NR(cmd) & EV_MAX) {
- case 0: bits = dev->evbit; max = EV_MAX; break;
- case EV_KEY: bits = dev->keybit; max = KEY_MAX; break;
- case EV_REL: bits = dev->relbit; max = REL_MAX; break;
- case EV_ABS: bits = dev->absbit; max = ABS_MAX; break;
- case EV_MSC: bits = dev->mscbit; max = MSC_MAX; break;
- case EV_LED: bits = dev->ledbit; max = LED_MAX; break;
- case EV_SND: bits = dev->sndbit; max = SND_MAX; break;
- case EV_FF: bits = dev->ffbit; max = FF_MAX; break;
- default: return -EINVAL;
- }
- bit_to_user(bits, max);
- }
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGKEY(0)))
- bit_to_user(dev->key, KEY_MAX);
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGLED(0)))
- bit_to_user(dev->led, LED_MAX);
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGSND(0)))
- bit_to_user(dev->snd, SND_MAX);
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGNAME(0))) {
- int len;
- if (!dev->name) return -ENOENT;
- len = strlen(dev->name) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->name, len) ? -EFAULT : len;
- }
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGPHYS(0))) {
- int len;
- if (!dev->phys) return -ENOENT;
- len = strlen(dev->phys) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->phys, len) ? -EFAULT : len;
- }
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGUNIQ(0))) {
- int len;
- if (!dev->uniq) return -ENOENT;
- len = strlen(dev->uniq) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user(p, dev->uniq, len) ? -EFAULT : len;
- }
-
- if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) {
-
- int t = _IOC_NR(cmd) & ABS_MAX;
-
- abs.value = dev->abs[t];
- abs.minimum = dev->absmin[t];
- abs.maximum = dev->absmax[t];
- abs.fuzz = dev->absfuzz[t];
- abs.flat = dev->absflat[t];
-
- if (copy_to_user(p, &abs, sizeof(struct input_absinfo)))
- return -EFAULT;
-
- return 0;
- }
- }
-
- if (_IOC_DIR(cmd) == _IOC_WRITE) {
-
- if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) {
-
- int t = _IOC_NR(cmd) & ABS_MAX;
-
- if (copy_from_user(&abs, p, sizeof(struct input_absinfo)))
- return -EFAULT;
-
- dev->abs[t] = abs.value;
- dev->absmin[t] = abs.minimum;
- dev->absmax[t] = abs.maximum;
- dev->absfuzz[t] = abs.fuzz;
- dev->absflat[t] = abs.flat;
-
- return 0;
- }
- }
- }
- return -EINVAL;
+ return evdev_ioctl_handler(file, cmd, compat_ptr(arg), 1);
}
#endif
-static struct file_operations evdev_fops = {
+static const struct file_operations evdev_fops = {
.owner = THIS_MODULE,
.read = evdev_read,
.write = evdev_write,
.flush = evdev_flush
};
-static struct input_handle *evdev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
+static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
{
struct evdev *evdev;
+ struct class_device *cdev;
+ dev_t devt;
int minor;
+ int error;
for (minor = 0; minor < EVDEV_MINORS && evdev_table[minor]; minor++);
if (minor == EVDEV_MINORS) {
printk(KERN_ERR "evdev: no more free evdev devices\n");
- return NULL;
+ return -ENFILE;
}
- if (!(evdev = kmalloc(sizeof(struct evdev), GFP_KERNEL)))
- return NULL;
- memset(evdev, 0, sizeof(struct evdev));
+ evdev = kzalloc(sizeof(struct evdev), GFP_KERNEL);
+ if (!evdev)
+ return -ENOMEM;
- INIT_LIST_HEAD(&evdev->list);
+ INIT_LIST_HEAD(&evdev->client_list);
init_waitqueue_head(&evdev->wait);
evdev->exist = 1;
evdev_table[minor] = evdev;
- devfs_mk_cdev(MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor),
- S_IFCHR|S_IRUGO|S_IWUSR, "input/event%d", minor);
- class_device_create(input_class,
- MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor),
- dev->dev, "event%d", minor);
+ devt = MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor),
+
+ cdev = class_device_create(&input_class, &dev->cdev, devt,
+ dev->cdev.dev, evdev->name);
+ if (IS_ERR(cdev)) {
+ error = PTR_ERR(cdev);
+ goto err_free_evdev;
+ }
+
+ /* temporary symlink to keep userspace happy */
+ error = sysfs_create_link(&input_class.subsys.kobj,
+ &cdev->kobj, evdev->name);
+ if (error)
+ goto err_cdev_destroy;
+
+ error = input_register_handle(&evdev->handle);
+ if (error)
+ goto err_remove_link;
+
+ return 0;
- return &evdev->handle;
+ err_remove_link:
+ sysfs_remove_link(&input_class.subsys.kobj, evdev->name);
+ err_cdev_destroy:
+ class_device_destroy(&input_class, devt);
+ err_free_evdev:
+ kfree(evdev);
+ evdev_table[minor] = NULL;
+ return error;
}
static void evdev_disconnect(struct input_handle *handle)
{
struct evdev *evdev = handle->private;
- struct evdev_list *list;
+ struct evdev_client *client;
+
+ input_unregister_handle(handle);
- class_device_destroy(input_class,
+ sysfs_remove_link(&input_class.subsys.kobj, evdev->name);
+ class_device_destroy(&input_class,
MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + evdev->minor));
- devfs_remove("input/event%d", evdev->minor);
evdev->exist = 0;
if (evdev->open) {
+ input_flush_device(handle, NULL);
input_close_device(handle);
wake_up_interruptible(&evdev->wait);
- list_for_each_entry(list, &evdev->list, node)
- kill_fasync(&list->fasync, SIGIO, POLL_HUP);
+ list_for_each_entry(client, &evdev->client_list, node)
+ kill_fasync(&client->fasync, SIGIO, POLL_HUP);
} else
evdev_free(evdev);
}
-static struct input_device_id evdev_ids[] = {
+static const struct input_device_id evdev_ids[] = {
{ .driver_info = 1 }, /* Matches all devices */
{ }, /* Terminating zero entry */
};
static int __init evdev_init(void)
{
- input_register_handler(&evdev_handler);
- return 0;
+ return input_register_handler(&evdev_handler);
}
static void __exit evdev_exit(void)