2  * fs/sysfs/bin.c - sysfs binary file implementation
10  * This file is released under the GPLv2.
31  * There's one bin_buffer for each open file.
44 	struct file			*file;  member
49 fill_read(struct file *file, char *buffer, loff_t off, size_t count)  in fill_read()  argument
51 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in fill_read()
62 		rc = attr->read(file, kobj, attr, buffer, off, count);  in fill_read()
70 read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)  in read()  argument
72 	struct bin_buffer *bb = file->private_data;  in read()
73 	int size = file->f_path.dentry->d_inode->i_size;  in read()
94 	count = fill_read(file, bb->buffer, offs, count);  in read()
119 flush_write(struct file *file, char *buffer, loff_t offset, size_t count)  in flush_write()  argument
121 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in flush_write()
132 		rc = attr->write(file, kobj, attr, buffer, offset, count);  in flush_write()
139 static ssize_t write(struct file *file, const char __user *userbuf,  in write()  argument
142 	struct bin_buffer *bb = file->private_data;  in write()
143 	int size = file->f_path.dentry->d_inode->i_size;  in write()
166 	count = flush_write(file, bb->buffer, offs, count);  in write()
178 	struct file *file = vma->vm_file;  in bin_vma_open()  local
179 	struct bin_buffer *bb = file->private_data;  in bin_vma_open()
180 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_vma_open()
196 	struct file *file = vma->vm_file;  in bin_fault()  local
197 	struct bin_buffer *bb = file->private_data;  in bin_fault()
198 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_fault()
217 	struct file *file = vma->vm_file;  in bin_page_mkwrite()  local
218 	struct bin_buffer *bb = file->private_data;  in bin_page_mkwrite()
219 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_page_mkwrite()
239 	struct file *file = vma->vm_file;  in bin_access()  local
240 	struct bin_buffer *bb = file->private_data;  in bin_access()
241 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_access()
261 	struct file *file = vma->vm_file;  in bin_set_policy()  local
262 	struct bin_buffer *bb = file->private_data;  in bin_set_policy()
263 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_set_policy()
283 	struct file *file = vma->vm_file;  in bin_get_policy()  local
284 	struct bin_buffer *bb = file->private_data;  in bin_get_policy()
285 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_get_policy()
305 	struct file *file = vma->vm_file;  in bin_migrate()  local
306 	struct bin_buffer *bb = file->private_data;  in bin_migrate()
307 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in bin_migrate()
337 static int mmap(struct file *file, struct vm_area_struct *vma)  in mmap()  argument
339 	struct bin_buffer *bb = file->private_data;  in mmap()
340 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in mmap()
356 	rc = attr->mmap(file, kobj, attr, vma);  in mmap()
365 	if (vma->vm_file != file)  in mmap()
392 static int open(struct inode * inode, struct file * file)  in open()  argument
394 	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;  in open()
399 	/* binary file operations requires both @sd and its parent */  in open()
404 	if ((file->f_mode & FMODE_WRITE) && !(attr->write || attr->mmap))  in open()
406 	if ((file->f_mode & FMODE_READ) && !(attr->read || attr->mmap))  in open()
419 	bb->file = file;  in open()
420 	file->private_data = bb;  in open()
436 static int release(struct inode * inode, struct file * file)  in release()  argument
438 	struct bin_buffer *bb = file->private_data;  in release()
470 		struct inode *inode = bb->file->f_path.dentry->d_inode;  in unmap_bin_file()
479  *	sysfs_create_bin_file - create binary file for object.
494  *	sysfs_remove_bin_file - remove binary file for object.