/* * Joystick device driver for the input driver suite. * * Copyright (c) 1999-2002 Vojtech Pavlik * Copyright (c) 1999 Colin Van Dyke * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <asm/io.h>#include <asm/system.h>#include <linux/delay.h>#include <linux/errno.h>#include <linux/joystick.h>#include <linux/input.h>#include <linux/kernel.h>#include <linux/major.h>#include <linux/slab.h>#include <linux/mm.h>#include <linux/miscdevice.h>#include <linux/module.h>#include <linux/poll.h>#include <linux/init.h>#include <linux/device.h> MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");MODULE_DESCRIPTION("Joystick device interfaces");MODULE_SUPPORTED_DEVICE("input/js");MODULE_LICENSE("GPL"); #define JOYDEV_MINOR_BASE 0#define JOYDEV_MINORS 16#define JOYDEV_BUFFER_SIZE 64 struct joydev { int exist; int open; int minor; char name[16]; struct input_handle handle; wait_queue_head_t wait; struct list_head client_list; struct device dev; struct js_corr corr[ABS_MAX + 1]; struct JS_DATA_SAVE_TYPE glue; int nabs; int nkey; __u16 keymap[KEY_MAX - BTN_MISC + 1]; __u16 keypam[KEY_MAX - BTN_MISC + 1]; __u8 absmap[ABS_MAX + 1]; __u8 abspam[ABS_MAX + 1]; __s16 abs[ABS_MAX + 1];}; struct joydev_client { struct js_event buffer[JOYDEV_BUFFER_SIZE]; int head; int tail; int startup; struct fasync_struct *fasync; struct joydev *joydev; struct list_head node;}; static struct joydev *joydev_table[JOYDEV_MINORS]; static int joydev_correct(int value, struct js_corr *corr){ switch (corr->type) { case JS_CORR_NONE: break; case JS_CORR_BROKEN: value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 : ((corr->coef[3] * (value - corr->coef[1])) >> 14)) : ((corr->coef[2] * (value - corr->coef[0])) >> 14); break; default: return 0; } return value < -32767 ? -32767 : (value > 32767 ? 32767 : value);} static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value){ struct joydev *joydev = handle->private; struct joydev_client *client; struct js_event event; switch (type) { case EV_KEY: if (code < BTN_MISC || value == 2) return; event.type = JS_EVENT_BUTTON; event.number = joydev->keymap[code - BTN_MISC]; event.value = value; break; case EV_ABS: event.type = JS_EVENT_AXIS; event.number = joydev->absmap[code]; event.value = joydev_correct(value, joydev->corr + event.number); if (event.value == joydev->abs[event.number]) return; joydev->abs[event.number] = event.value; break; default: return; } event.time = jiffies_to_msecs(jiffies); list_for_each_entry(client, &joydev->client_list, node) { memcpy(client->buffer + client->head, &event, sizeof(struct js_event)); if (client->startup == joydev->nabs + joydev->nkey) if (client->tail == (client->head = (client->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) client->startup = 0; kill_fasync(&client->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&joydev->wait);} static int joydev_fasync(int fd, struct file *file, int on){ int retval; struct joydev_client *client = file->private_data; retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0;} static void joydev_free(struct device *dev){ struct joydev *joydev = container_of(dev, struct joydev, dev); joydev_table[joydev->minor] = NULL; kfree(joydev);} static int joydev_release(struct inode *inode, struct file *file){ struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; joydev_fasync(-1, file, 0); list_del(&client->node); kfree(client); if (!--joydev->open && joydev->exist) input_close_device(&joydev->handle); put_device(&joydev->dev); return 0;} static int joydev_open(struct inode *inode, struct file *file){ struct joydev_client *client; struct joydev *joydev; int i = iminor(inode) - JOYDEV_MINOR_BASE; int error; if (i >= JOYDEV_MINORS) return -ENODEV; joydev = joydev_table[i]; if (!joydev || !joydev->exist) return -ENODEV; get_device(&joydev->dev); client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); if (!client) { error = -ENOMEM; goto err_put_joydev; } client->joydev = joydev; list_add_tail(&client->node, &joydev->client_list); if (!joydev->open++ && joydev->exist) { error = input_open_device(&joydev->handle); if (error) goto err_free_client; } file->private_data = client; return 0; err_free_client: list_del(&client->node); kfree(client); err_put_joydev: put_device(&joydev->dev); return error;} static ssize_t joydev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos){ return -EINVAL;} static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos){ struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; struct input_dev *input = joydev->handle.dev; int retval = 0; if (!joydev->exist) return -ENODEV; if (count < sizeof(struct js_event)) return -EINVAL; if (count == sizeof(struct JS_DATA_TYPE)) { struct JS_DATA_TYPE data; int i; for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) data.buttons |= test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) return -EFAULT; client->startup = 0; client->tail = client->head; return sizeof(struct JS_DATA_TYPE); } if (client->startup == joydev->nabs + joydev->nkey && client->head == client->tail && (file->f_flags & O_NONBLOCK)) return -EAGAIN; retval = wait_event_interruptible(joydev->wait, !joydev->exist || client->startup < joydev->nabs + joydev->nkey || client->head != client->tail); if (retval) return retval; if (!joydev->exist) return -ENODEV; while (client->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { struct js_event event; event.time = jiffies_to_msecs(jiffies); if (client->startup < joydev->nkey) { event.type = JS_EVENT_BUTTON | JS_EVENT_INIT; event.number = client->startup; event.value = !!test_bit(joydev->keypam[event.number], input->key); } else { event.type = JS_EVENT_AXIS | JS_EVENT_INIT; event.number = client->startup - joydev->nkey; event.value = joydev->abs[event.number]; } if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) return -EFAULT; client->startup++; retval += sizeof(struct js_event); } while (client->head != client->tail && retval + sizeof(struct js_event) <= count) { if (copy_to_user(buf + retval, client->buffer + client->tail, sizeof(struct js_event))) return -EFAULT; client->tail = (client->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); retval += sizeof(struct js_event); } return retval;} /* No kernel lock - fine */static unsigned int joydev_poll(struct file *file, poll_table *wait){ struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; poll_wait(file, &joydev->wait, wait); return ((client->head != client->tail || client->startup < joydev->nabs + joydev->nkey) ? (POLLIN | POLLRDNORM) : 0) | (joydev->exist ? 0 : (POLLHUP | POLLERR));} static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __user *argp){ struct input_dev *dev = joydev->handle.dev; int i, j; switch (cmd) { case JS_SET_CAL: return copy_from_user(&joydev->glue.JS_CORR, argp, sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; case JS_GET_CAL: return copy_to_user(argp, &joydev->glue.JS_CORR, sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; case JS_SET_TIMEOUT: return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); case JS_GET_TIMEOUT: return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); case JSIOCGVERSION: return put_user(JS_VERSION, (__u32 __user *) argp); case JSIOCGAXES: return put_user(joydev->nabs, (__u8 __user *) argp); case JSIOCGBUTTONS: return put_user(joydev->nkey, (__u8 __user *) argp); case JSIOCSCORR: if (copy_from_user(joydev->corr, argp, sizeof(joydev->corr[0]) * joydev->nabs)) return -EFAULT; for (i = 0; i < joydev->nabs; i++) { j = joydev->abspam[i]; joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i); } return 0; case JSIOCGCORR: return copy_to_user(argp, joydev->corr, sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0; case JSIOCSAXMAP: if (copy_from_user(joydev->abspam, argp, sizeof(__u8) * (ABS_MAX + 1))) return -EFAULT; for (i = 0; i < joydev->nabs; i++) { if (joydev->abspam[i] > ABS_MAX) return -EINVAL; joydev->absmap[joydev->abspam[i]] = i; } return 0; case JSIOCGAXMAP: return copy_to_user(argp, joydev->abspam, sizeof(__u8) * (ABS_MAX + 1)) ? -EFAULT : 0; case JSIOCSBTNMAP: if (copy_from_user(joydev->keypam, argp, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1))) return -EFAULT; for (i = 0; i < joydev->nkey; i++) { if (joydev->keypam[i] > KEY_MAX || joydev->keypam[i] < BTN_MISC) return -EINVAL; joydev->keymap[joydev->keypam[i] - BTN_MISC] = i; } return 0; case JSIOCGBTNMAP: return copy_to_user(argp, joydev->keypam, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1)) ? -EFAULT : 0; default: if ((cmd & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT)) == JSIOCGNAME(0)) { int len; if (!dev->name) return 0; len = strlen(dev->name) + 1; if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); if (copy_to_user(argp, dev->name, len)) return -EFAULT; return len; } } return -EINVAL;} #ifdef CONFIG_COMPATstatic long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg){ struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; s32 tmp32; struct JS_DATA_SAVE_TYPE_32 ds32; int err; if (!joydev->exist) return -ENODEV; switch(cmd) { case JS_SET_TIMELIMIT: err = get_user(tmp32, (s32 __user *) arg); if (err == 0) joydev->glue.JS_TIMELIMIT = tmp32; break; case JS_GET_TIMELIMIT: tmp32 = joydev->glue.JS_TIMELIMIT; err = put_user(tmp32, (s32 __user *) arg); break; case JS_SET_ALL: err = copy_from_user(&ds32, argp, sizeof(ds32)) ? -EFAULT : 0; if (err == 0) { joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT; joydev->glue.BUSY = ds32.BUSY; joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME; joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT; joydev->glue.JS_SAVE = ds32.JS_SAVE; joydev->glue.JS_CORR = ds32.JS_CORR; } break; case JS_GET_ALL: ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT; ds32.BUSY = joydev->glue.BUSY; ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME; ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT; ds32.JS_SAVE = joydev->glue.JS_SAVE; ds32.JS_CORR = joydev->glue.JS_CORR; err = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0; break; default: err = joydev_ioctl_common(joydev, cmd, argp); } return err;}#endif /* CONFIG_COMPAT */ static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg){ struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; if (!joydev->exist) return -ENODEV; switch(cmd) { case JS_SET_TIMELIMIT: return get_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); case JS_GET_TIMELIMIT: return put_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); case JS_SET_ALL: return copy_from_user(&joydev->glue, argp, sizeof(joydev->glue)) ? -EFAULT : 0; case JS_GET_ALL: return copy_to_user(argp, &joydev->glue, sizeof(joydev->glue)) ? -EFAULT : 0; default: return joydev_ioctl_common(joydev, cmd, argp); }} static const struct file_operations joydev_fops = { .owner = THIS_MODULE, .read = joydev_read, .write = joydev_write, .poll = joydev_poll, .open = joydev_open, .release = joydev_release, .ioctl = joydev_ioctl,#ifdef CONFIG_COMPAT .compat_ioctl = joydev_compat_ioctl,#endif .fasync = joydev_fasync,}; static int joydev_connect(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id){ struct joydev *joydev; int i, j, t, minor; int error; for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++); if (minor == JOYDEV_MINORS) { printk(KERN_ERR "joydev: no more free joydev devices\n"); return -ENFILE;Lines 1–500 of 658. Load more
/* * Joystick device driver for the input driver suite. * * Copyright (c) 1999-2002 Vojtech Pavlik * Copyright (c) 1999 Colin Van Dyke * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <asm/io.h> #include <asm/system.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/joystick.h> #include <linux/input.h> #include <linux/kernel.h> #include <linux/major.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/miscdevice.h> #include <linux/module.h> #include <linux/poll.h> #include <linux/init.h> #include <linux/device.h> MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION("Joystick device interfaces"); MODULE_SUPPORTED_DEVICE("input/js"); MODULE_LICENSE("GPL"); #define JOYDEV_MINOR_BASE 0 #define JOYDEV_MINORS 16 #define JOYDEV_BUFFER_SIZE 64 struct joydev { int exist; int open; int minor; char name[16]; struct input_handle handle; wait_queue_head_t wait; struct list_head client_list; struct device dev; struct js_corr corr[ABS_MAX + 1]; struct JS_DATA_SAVE_TYPE glue; int nabs; int nkey; __u16 keymap[KEY_MAX - BTN_MISC + 1]; __u16 keypam[KEY_MAX - BTN_MISC + 1]; __u8 absmap[ABS_MAX + 1]; __u8 abspam[ABS_MAX + 1]; __s16 abs[ABS_MAX + 1]; }; struct joydev_client { struct js_event buffer[JOYDEV_BUFFER_SIZE]; int head; int tail; int startup; struct fasync_struct *fasync; struct joydev *joydev; struct list_head node; }; static struct joydev *joydev_table[JOYDEV_MINORS]; static int joydev_correct(int value, struct js_corr *corr) { switch (corr->type) { case JS_CORR_NONE: break; case JS_CORR_BROKEN: value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 : ((corr->coef[3] * (value - corr->coef[1])) >> 14)) : ((corr->coef[2] * (value - corr->coef[0])) >> 14); break; default: return 0; } return value < -32767 ? -32767 : (value > 32767 ? 32767 : value); } static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) { struct joydev *joydev = handle->private; struct joydev_client *client; struct js_event event; switch (type) { case EV_KEY: if (code < BTN_MISC || value == 2) return; event.type = JS_EVENT_BUTTON; event.number = joydev->keymap[code - BTN_MISC]; event.value = value; break; case EV_ABS: event.type = JS_EVENT_AXIS; event.number = joydev->absmap[code]; event.value = joydev_correct(value, joydev->corr + event.number); if (event.value == joydev->abs[event.number]) return; joydev->abs[event.number] = event.value; break; default: return; } event.time = jiffies_to_msecs(jiffies); list_for_each_entry(client, &joydev->client_list, node) { memcpy(client->buffer + client->head, &event, sizeof(struct js_event)); if (client->startup == joydev->nabs + joydev->nkey) if (client->tail == (client->head = (client->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) client->startup = 0; kill_fasync(&client->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&joydev->wait); } static int joydev_fasync(int fd, struct file *file, int on) { int retval; struct joydev_client *client = file->private_data; retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0; } static void joydev_free(struct device *dev) { struct joydev *joydev = container_of(dev, struct joydev, dev); joydev_table[joydev->minor] = NULL; kfree(joydev); } static int joydev_release(struct inode *inode, struct file *file) { struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; joydev_fasync(-1, file, 0); list_del(&client->node); kfree(client); if (!--joydev->open && joydev->exist) input_close_device(&joydev->handle); put_device(&joydev->dev); return 0; } static int joydev_open(struct inode *inode, struct file *file) { struct joydev_client *client; struct joydev *joydev; int i = iminor(inode) - JOYDEV_MINOR_BASE; int error; if (i >= JOYDEV_MINORS) return -ENODEV; joydev = joydev_table[i]; if (!joydev || !joydev->exist) return -ENODEV; get_device(&joydev->dev); client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); if (!client) { error = -ENOMEM; goto err_put_joydev; } client->joydev = joydev; list_add_tail(&client->node, &joydev->client_list); if (!joydev->open++ && joydev->exist) { error = input_open_device(&joydev->handle); if (error) goto err_free_client; } file->private_data = client; return 0; err_free_client: list_del(&client->node); kfree(client); err_put_joydev: put_device(&joydev->dev); return error; } static ssize_t joydev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { return -EINVAL; } static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; struct input_dev *input = joydev->handle.dev; int retval = 0; if (!joydev->exist) return -ENODEV; if (count < sizeof(struct js_event)) return -EINVAL; if (count == sizeof(struct JS_DATA_TYPE)) { struct JS_DATA_TYPE data; int i; for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) data.buttons |= test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) return -EFAULT; client->startup = 0; client->tail = client->head; return sizeof(struct JS_DATA_TYPE); } if (client->startup == joydev->nabs + joydev->nkey && client->head == client->tail && (file->f_flags & O_NONBLOCK)) return -EAGAIN; retval = wait_event_interruptible(joydev->wait, !joydev->exist || client->startup < joydev->nabs + joydev->nkey || client->head != client->tail); if (retval) return retval; if (!joydev->exist) return -ENODEV; while (client->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { struct js_event event; event.time = jiffies_to_msecs(jiffies); if (client->startup < joydev->nkey) { event.type = JS_EVENT_BUTTON | JS_EVENT_INIT; event.number = client->startup; event.value = !!test_bit(joydev->keypam[event.number], input->key); } else { event.type = JS_EVENT_AXIS | JS_EVENT_INIT; event.number = client->startup - joydev->nkey; event.value = joydev->abs[event.number]; } if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) return -EFAULT; client->startup++; retval += sizeof(struct js_event); } while (client->head != client->tail && retval + sizeof(struct js_event) <= count) { if (copy_to_user(buf + retval, client->buffer + client->tail, sizeof(struct js_event))) return -EFAULT; client->tail = (client->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); retval += sizeof(struct js_event); } return retval; } /* No kernel lock - fine */ static unsigned int joydev_poll(struct file *file, poll_table *wait) { struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; poll_wait(file, &joydev->wait, wait); return ((client->head != client->tail || client->startup < joydev->nabs + joydev->nkey) ? (POLLIN | POLLRDNORM) : 0) | (joydev->exist ? 0 : (POLLHUP | POLLERR)); } static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __user *argp) { struct input_dev *dev = joydev->handle.dev; int i, j; switch (cmd) { case JS_SET_CAL: return copy_from_user(&joydev->glue.JS_CORR, argp, sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; case JS_GET_CAL: return copy_to_user(argp, &joydev->glue.JS_CORR, sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; case JS_SET_TIMEOUT: return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); case JS_GET_TIMEOUT: return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); case JSIOCGVERSION: return put_user(JS_VERSION, (__u32 __user *) argp); case JSIOCGAXES: return put_user(joydev->nabs, (__u8 __user *) argp); case JSIOCGBUTTONS: return put_user(joydev->nkey, (__u8 __user *) argp); case JSIOCSCORR: if (copy_from_user(joydev->corr, argp, sizeof(joydev->corr[0]) * joydev->nabs)) return -EFAULT; for (i = 0; i < joydev->nabs; i++) { j = joydev->abspam[i]; joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i); } return 0; case JSIOCGCORR: return copy_to_user(argp, joydev->corr, sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0; case JSIOCSAXMAP: if (copy_from_user(joydev->abspam, argp, sizeof(__u8) * (ABS_MAX + 1))) return -EFAULT; for (i = 0; i < joydev->nabs; i++) { if (joydev->abspam[i] > ABS_MAX) return -EINVAL; joydev->absmap[joydev->abspam[i]] = i; } return 0; case JSIOCGAXMAP: return copy_to_user(argp, joydev->abspam, sizeof(__u8) * (ABS_MAX + 1)) ? -EFAULT : 0; case JSIOCSBTNMAP: if (copy_from_user(joydev->keypam, argp, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1))) return -EFAULT; for (i = 0; i < joydev->nkey; i++) { if (joydev->keypam[i] > KEY_MAX || joydev->keypam[i] < BTN_MISC) return -EINVAL; joydev->keymap[joydev->keypam[i] - BTN_MISC] = i; } return 0; case JSIOCGBTNMAP: return copy_to_user(argp, joydev->keypam, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1)) ? -EFAULT : 0; default: if ((cmd & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT)) == JSIOCGNAME(0)) { int len; if (!dev->name) return 0; len = strlen(dev->name) + 1; if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); if (copy_to_user(argp, dev->name, len)) return -EFAULT; return len; } } return -EINVAL; } #ifdef CONFIG_COMPAT static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; s32 tmp32; struct JS_DATA_SAVE_TYPE_32 ds32; int err; if (!joydev->exist) return -ENODEV; switch(cmd) { case JS_SET_TIMELIMIT: err = get_user(tmp32, (s32 __user *) arg); if (err == 0) joydev->glue.JS_TIMELIMIT = tmp32; break; case JS_GET_TIMELIMIT: tmp32 = joydev->glue.JS_TIMELIMIT; err = put_user(tmp32, (s32 __user *) arg); break; case JS_SET_ALL: err = copy_from_user(&ds32, argp, sizeof(ds32)) ? -EFAULT : 0; if (err == 0) { joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT; joydev->glue.BUSY = ds32.BUSY; joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME; joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT; joydev->glue.JS_SAVE = ds32.JS_SAVE; joydev->glue.JS_CORR = ds32.JS_CORR; } break; case JS_GET_ALL: ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT; ds32.BUSY = joydev->glue.BUSY; ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME; ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT; ds32.JS_SAVE = joydev->glue.JS_SAVE; ds32.JS_CORR = joydev->glue.JS_CORR; err = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0; break; default: err = joydev_ioctl_common(joydev, cmd, argp); } return err; } #endif /* CONFIG_COMPAT */ static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct joydev_client *client = file->private_data; struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; if (!joydev->exist) return -ENODEV; switch(cmd) { case JS_SET_TIMELIMIT: return get_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); case JS_GET_TIMELIMIT: return put_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); case JS_SET_ALL: return copy_from_user(&joydev->glue, argp, sizeof(joydev->glue)) ? -EFAULT : 0; case JS_GET_ALL: return copy_to_user(argp, &joydev->glue, sizeof(joydev->glue)) ? -EFAULT : 0; default: return joydev_ioctl_common(joydev, cmd, argp); } } static const struct file_operations joydev_fops = { .owner = THIS_MODULE, .read = joydev_read, .write = joydev_write, .poll = joydev_poll, .open = joydev_open, .release = joydev_release, .ioctl = joydev_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = joydev_compat_ioctl, #endif .fasync = joydev_fasync, }; static int joydev_connect(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id) { struct joydev *joydev; int i, j, t, minor; int error; for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++); if (minor == JOYDEV_MINORS) { printk(KERN_ERR "joydev: no more free joydev devices\n"); return -ENFILE;