#include <linux/init.h>
#include <linux/fs.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/major.h>
#include <linux/blkdev.h>
#include <linux/module.h>
static struct class *raw_class;
static struct raw_device_data raw_devices[MAX_RAW_MINORS];
static DEFINE_MUTEX(raw_mutex);
-static struct file_operations raw_ctl_fops; /* forward declaration */
+static const struct file_operations raw_ctl_fops; /* forward declaration */
/*
* Open/close code for raw IO.
filp->f_flags |= O_DIRECT;
filp->f_mapping = bdev->bd_inode->i_mapping;
if (++raw_devices[minor].inuse == 1)
- filp->f_dentry->d_inode->i_mapping =
+ filp->f_path.dentry->d_inode->i_mapping =
bdev->bd_inode->i_mapping;
filp->private_data = bdev;
mutex_unlock(&raw_mutex);
static void bind_device(struct raw_config_request *rq)
{
- class_device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
- class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
- NULL, "raw%d", rq->raw_minor);
+ device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
+ device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
+ "raw%d", rq->raw_minor);
}
/*
if (rq.block_major == 0 && rq.block_minor == 0) {
/* unbind */
rawdev->binding = NULL;
- class_device_destroy(raw_class,
+ device_destroy(raw_class,
MKDEV(RAW_MAJOR, rq.raw_minor));
} else {
rawdev->binding = bdget(dev);
return err;
}
-static ssize_t raw_file_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct iovec local_iov = {
- .iov_base = (char __user *)buf,
- .iov_len = count
- };
-
- return generic_file_write_nolock(file, &local_iov, 1, ppos);
-}
-
-static ssize_t raw_file_aio_write(struct kiocb *iocb, const char __user *buf,
- size_t count, loff_t pos)
-{
- struct iovec local_iov = {
- .iov_base = (char __user *)buf,
- .iov_len = count
- };
-
- return generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos);
-}
-
-
-static struct file_operations raw_fops = {
- .read = generic_file_read,
+static const struct file_operations raw_fops = {
+ .read = do_sync_read,
.aio_read = generic_file_aio_read,
- .write = raw_file_write,
- .aio_write = raw_file_aio_write,
+ .write = do_sync_write,
+ .aio_write = generic_file_aio_write_nolock,
.open = raw_open,
.release= raw_release,
.ioctl = raw_ioctl,
- .readv = generic_file_readv,
- .writev = generic_file_writev,
.owner = THIS_MODULE,
};
-static struct file_operations raw_ctl_fops = {
+static const struct file_operations raw_ctl_fops = {
.ioctl = raw_ctl_ioctl,
.open = raw_open,
.owner = THIS_MODULE,
static int __init raw_init(void)
{
- int i;
dev_t dev = MKDEV(RAW_MAJOR, 0);
+ int ret;
- if (register_chrdev_region(dev, MAX_RAW_MINORS, "raw"))
+ ret = register_chrdev_region(dev, MAX_RAW_MINORS, "raw");
+ if (ret)
goto error;
cdev_init(&raw_cdev, &raw_fops);
- if (cdev_add(&raw_cdev, dev, MAX_RAW_MINORS)) {
+ ret = cdev_add(&raw_cdev, dev, MAX_RAW_MINORS);
+ if (ret) {
kobject_put(&raw_cdev.kobj);
- unregister_chrdev_region(dev, MAX_RAW_MINORS);
- goto error;
+ goto error_region;
}
raw_class = class_create(THIS_MODULE, "raw");
if (IS_ERR(raw_class)) {
printk(KERN_ERR "Error creating raw class.\n");
cdev_del(&raw_cdev);
- unregister_chrdev_region(dev, MAX_RAW_MINORS);
- goto error;
+ ret = PTR_ERR(raw_class);
+ goto error_region;
}
- class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
-
- devfs_mk_cdev(MKDEV(RAW_MAJOR, 0),
- S_IFCHR | S_IRUGO | S_IWUGO,
- "raw/rawctl");
- for (i = 1; i < MAX_RAW_MINORS; i++)
- devfs_mk_cdev(MKDEV(RAW_MAJOR, i),
- S_IFCHR | S_IRUGO | S_IWUGO,
- "raw/raw%d", i);
+ device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), "rawctl");
+
return 0;
+error_region:
+ unregister_chrdev_region(dev, MAX_RAW_MINORS);
error:
- printk(KERN_ERR "error register raw device\n");
- return 1;
+ return ret;
}
static void __exit raw_exit(void)
{
- int i;
-
- for (i = 1; i < MAX_RAW_MINORS; i++)
- devfs_remove("raw/raw%d", i);
- devfs_remove("raw/rawctl");
- devfs_remove("raw");
- class_device_destroy(raw_class, MKDEV(RAW_MAJOR, 0));
+ device_destroy(raw_class, MKDEV(RAW_MAJOR, 0));
class_destroy(raw_class);
cdev_del(&raw_cdev);
unregister_chrdev_region(MKDEV(RAW_MAJOR, 0), MAX_RAW_MINORS);