#include <linux/fs.h>
#include <linux/module.h>
-#include <linux/dnotify.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
/**
* fill_write_buffer - copy buffer from userspace.
* @buffer: data buffer for file.
- * @userbuf: data from user.
+ * @buf: data from user.
* @count: number of bytes in @userbuf.
*
* Allocate @buffer->page if it hasn't been already, then
/**
* flush_write_buffer - push buffer to config_item.
- * @file: file pointer.
+ * @dentry: dentry to the attribute
* @buffer: data buffer for file.
+ * @count: number of bytes
*
* Get the correct pointers for the config_item and the attribute we're
* dealing with, then call the store() method for the attribute,
configfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
struct configfs_buffer * buffer = file->private_data;
+ ssize_t len;
down(&buffer->sem);
- count = fill_write_buffer(buffer,buf,count);
- if (count > 0)
- count = flush_write_buffer(file->f_dentry,buffer,count);
- if (count > 0)
- *ppos += count;
+ len = fill_write_buffer(buffer, buf, count);
+ if (len > 0)
+ len = flush_write_buffer(file->f_dentry, buffer, count);
+ if (len > 0)
+ *ppos += len;
up(&buffer->sem);
- return count;
+ return len;
}
static int check_perm(struct inode * inode, struct file * file)
return 0;
}
-struct file_operations configfs_file_operations = {
+const struct file_operations configfs_file_operations = {
.read = configfs_read_file,
.write = configfs_write_file,
.llseek = generic_file_llseek,